JP4822611B2 - Muddy water treatment apparatus and muddy water treatment method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention measures a turbidity in wastewater, adds an inorganic powder flocculant required by the measured turbidity, agglomerates suspended suspended solids in the wastewater, and separates and removes the turbid water treatment apparatus. The present invention relates to a muddy water treatment method using a muddy water treatment apparatus.
[0002]
[Prior art]
Conventionally, in muddy water treatment, muddy water is stored in a vessel such as a tank, a flocculant for muddy water treatment is added, and suspended suspended matter that causes muddy water is agglomerated at the bottom of the vessel, and the upper clear water And the accumulated agglomerates are separated. Conventionally, polyaluminum chloride, acrylamide polymer flocculants, and the like are used as the flocculant. Since this polyaluminum chloride is a basic salt, it is economical because no alkali agent is required, has a workability such as a wide coagulation pH range, and is compatible with processing equipment. Has an agglomeration effect such as extremely high. Polymer flocculants are also used to agglomerate fine particles such as suspended suspended solids to form large flocs, improve sedimentation and clarity, and promote filtration and dehydration. In particular, acrylamide polymer flocculants include nonionic, anionic, and cationic ones. Nonionic ones can be used in a wide range of applications from acidic to alkaline. It can be agglomerated. Moreover, in the case of an anionic thing, it can apply from weakly acidic to alkaline, and this can also aggregate by the adsorption bridge | crosslinking by a hydrogen bond. Furthermore, in the case of a cation type thing, it can apply from acidic to weak alkalinity, and can be aggregated by electrostatic adsorption bridge | crosslinking.
[0003]
Further, it is known that this polymer flocculant can further accelerate the generation of flocs and improve the clarification effect when used in combination with the above-described aluminum chloride. Since these can reduce the addition amount, the processing cost can be reduced, and the generated sludge volume can be considerably reduced, so that post-treatment such as landfill, incineration, and solidification is facilitated. .
[0004]
In addition, in turbid water treatment, heavy metals in the wastewater are considered to be a problem in addition to the suspended suspended solids described above. Among them, chromic acid (CrO ₃ ), Potassium dichromate (K ₂ Cr ₂ O ₇ ), Sodium dichromate (Na ₂ Cr ₂ O ₇ Hexavalent chromium is listed as an environmental problem. This hexavalent chromium is highly toxic and causes edema and ulcers as effects on the human body. Hexavalent chromium is used for corrosion protection of metals and equipment, and is generally used for plating such as aluminum film treatment, zinc film treatment, and stainless steel. Moreover, since it is contained in cement and cement-based solidified materials, the problem of hexavalent chromium in waste water containing cement in tunnel construction has been pointed out. Therefore, in the cement waste water and the like, there has been a need for a flocculant capable of coagulating and removing the suspended suspended solids and heavy metals such as hexavalent chromium.
[0005]
In addition, in the above-described aluminum chloride and polymer flocculant, the injection amount is controlled by the concentration of suspended suspended solids in the waste water. However, since the concentration of suspended suspended solids in the wastewater is not always constant, it has been difficult to control these injection amounts. In addition, in order to cope with changes in turbidity, it is possible to set the amount with the highest turbidity, but if the turbidity is low, there is a problem that the flocculant is wasted. there were. Furthermore, heavy metals such as hexavalent chromium described above cannot be coagulated and removed at the same time, and they must be removed by providing a separate removing device, resulting in an increase in cost and device size.
[0006]
[Problems to be solved by the invention]
In view of the above-mentioned problems, the present invention makes it easy to adjust the amount of flocculant added even if the turbidity in the wastewater changes, and enables turbid water treatment to simultaneously coagulate and remove heavy metals such as hexavalent chromium. An object is to provide an apparatus and a muddy water treatment method using the muddy water treatment apparatus.
[0007]
[Means for Solving the Problems]
That is, according to the invention of claim 1 of the present invention, a container connected to a drain pipe and containing drainage;
Turbidity measuring means for measuring the turbidity of the wastewater contained in the container using sound waves;
An addition device for adding a predetermined amount of the inorganic powder flocculant according to the measured turbidity;
A stirrer that stirs and mixes the waste water contained in the container and the inorganic powder flocculant;
A muddy water treatment apparatus is provided, which is provided at the bottom of the container and includes a pump for delivering aggregates.
[0008]
According to the invention of claim 2 of the present invention, the turbidity measuring means is a detection rod, and the detection rod has a tip branched into two to transmit sound waves from one side, and the other side A muddy water treatment apparatus is provided that receives sound waves.
[0009]
According to the invention of claim 3 of the present invention, the adding device is provided with a filled container filled with the inorganic powder flocculant, hermetically sealed, an air compressor, a vibrator, and a plurality of holes in the peripheral portion. A disc and an electric motor for rotating the disc,
A turbid water treatment apparatus is provided, wherein the amount of the inorganic powder flocculant added is controlled by a signal from the turbidity measuring means.
[0010]
According to invention of Claim 4 of this invention, the said inorganic type powder flocculent is 35-77 mass% of silicon dioxide, 5-15 mass% of aluminum oxide, 1-5 mass% of potassium oxide, and sodium oxide. 1-5% by mass, 10-20% by mass of iron oxide, 5-15% by mass of sulfur trioxide, 0.5-2% by mass of calcium oxide, and 0.5-3% by mass of carbon Is provided.
[0011]
According to the invention of claim 5 of the present invention, the container is provided with a partition plate so that the drainage can be moved on the upper side and the lower side, connected to the drainage pipe, and the turbidity measuring means. There is provided a muddy water treatment device that is divided into a detection unit comprising: a treatment unit comprising the addition device, the stirrer, and the pump.
[0012]
According to invention of Claim 6 of this invention, the process which supplies waste_water | drain to a container, the process which measures the turbidity of the said waste_water | drain using a sound wave, and predetermined amount from an addition apparatus according to the measured said turbidity A turbid water treatment method comprising: adding an inorganic powder flocculant, mixing the waste water and the inorganic powder flocculant with a stirrer, and feeding the aggregate at the bottom of the container Is done.
[0013]
According to the seventh aspect of the present invention, there is provided a turbid water treatment method in which the turbidity is measured by transmitting a sound wave from one of detection rods and receiving the sound wave on the other.
[0014]
According to the invention of claim 8 of the present invention, in the adding device, the inorganic powder agglomerates in a plurality of holes provided in a peripheral portion of the disk while being supplied with compressed air and being vibrated by a vibrator. A muddy water treatment method is provided in which the inorganic powder agglomerates filled in the holes of the disk are added to the wastewater stored in the container by compressed air when the disk is filled to a predetermined position.
[0015]
According to invention of Claim 9 of this invention, the said inorganic type powder flocculent is 35-77 mass% of silicon dioxide, 5-15 mass% of aluminum oxide, 1-5 mass% of potassium oxide, and sodium oxide. 1-5% by mass, 10-20% by mass of iron oxide, 5-15% by mass of sulfur trioxide, 0.5-2% by mass of calcium oxide, and 0.5-3% by mass of carbon Is provided.
[0016]
According to the tenth aspect of the present invention, the container is provided with a partition plate so that the drainage can be moved on the upper side and the lower side, is connected to the drain pipe, and includes a turbidity measuring means. There is provided a muddy water treatment method that is divided into a detection unit, and a treatment unit including the addition device, the stirrer, and a pump.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail with reference to the drawings, but is not limited to the embodiments described below. FIG. 1 is a view showing a muddy water treatment apparatus of the present invention. A turbid water treatment apparatus 1 shown in FIG. 1 is provided with a container 3 for accommodating waste water flowing through a drain pipe 2. In the container 3 shown in FIG. 1, the drain pipe 2 penetrates the side plate of the container 3 and is disposed at the bottom of the groove 4 provided above the inside of the container 3. The waste water flowing in the drain pipe 2 is supplied to the groove 4 and is accommodated in the container 3 so as to overflow the groove 4. Further, the container 3 shown in FIG. 1 is provided with a partition plate 5 for partitioning the upper side and the lower side so that the drainage can move. Overflowing wastewater contains suspended matter that causes turbid water as time passes, so that the supernatant has properties close to fresh water and the bottom has properties close to sludge. Therefore, water close to fresh water moves from the upper side of the partition plate 5 beyond the partition plate 5, and muddy water containing sludge moves from the lower side. Further, the partition plate 5 is used to reduce the influence of the water flow generated from the stirring means or the like in the turbidity measurement by the turbidity measuring means shown below.
[0018]
The container 3 shown in FIG. 1 can use the material according to the property of drainage. The container 3 can have any size and shape as required. Further, as shown in FIG. 1, even if the groove 4 is not provided, the drainage pipe 2 can be supplied by overflowing the side pipe of the container 3 by bending the drainage pipe 2 penetrating upward. it can. In the present invention, it is preferable to overflow the turbid water into the container 3 in order to reduce the occurrence of water flow around the detection rod shown below due to inflow and stirring. Moreover, the partition plate 5 can be provided as needed, and can be arrange | positioned in an appropriate position.
[0019]
The container 3 shown in FIG. 1 is filled with drainage that overflows the groove 4 through the drainage pipe 2. One detection unit 6 divided by the partition plate 5 shown in FIG. 1 is provided with two detection rods 7a and 7b as turbidity measuring means for measuring turbidity. The other processing unit 8 is provided with a stirrer 9, a sludge pump 10 at the bottom, and an addition device 11 for adding an inorganic powder flocculant to the processing unit 8. It has been.
[0020]
In the embodiment shown in FIG. 1, two ranges of detection rods 7a and 7b are provided to cope with changes in turbidity, and the turbidity is detected by the detection rods 7a and 7b. Divided into three ranges. The amount of the inorganic powder flocculant to be added is controlled by any one of the three ranges, and the amount of flocculant is added. The addition amount in each range can be set after the waste water is accommodated in the container 3 before the operation of the turbid water treatment apparatus 1, the supernatant water is analyzed, and the addition amount that achieves the treatment target level is tested. The detection rods 7a and 7b shown in FIG. 1 are branched at two ends so that turbidity in waste water can be measured by transmitting sound waves from one side and receiving the sound waves on the other side. It has become. If there are many suspended suspended solids, the transmitted sound waves will be reflected on the suspended suspended solids and will be difficult to detect on the other side, so the difference between the transmitted sound waves and the received sound waves will be large. Since there is almost no suspended suspended matter, the difference between the transmitted sound wave and the received sound wave becomes small. By setting the above three turbidity ranges in advance, the turbidity can be measured by the received sound wave. In the present invention, the sound wave may be an ultrasonic wave, and the sound wave may be measured with any frequency, as long as the turbidity can be measured by the difference between the transmitted sound wave and the received sound wave. In addition, an amplifier such as an amplifier can be provided so that the received sound wave can be amplified.
[0021]
As the inorganic powder flocculant used in the present invention, an inorganic powder flocculant mainly composed of silicon dioxide can be used. The inorganic powder flocculant used in the present invention is 35 to 77% by mass of silicon dioxide, 5 to 15% by mass of aluminum oxide, 1 to 5% by mass of potassium oxide, 1 to 5% by mass of sodium oxide, and iron oxide. 10 to 20 mass%, sulfur trioxide 5 to 15 mass%, calcium oxide 0.5 to 2 mass%, and carbon 0.5 to 3 mass%. This flocculant does not require pre-dissolution operations such as pH adjustment of drainage or alkaline agent, and can easily form flocs simply by adding and stirring. Further, the generated floc has good sedimentation and dewatering properties, and sludge treatment is easy. The addition amount is preferably about 1/100 to 1/20 of the suspended matter in the waste water. Further, since it is a stone powder mainly composed of silicon dioxide and does not contain harmful substances, there is no environmental problem even if the amount added is increased.
[0022]
The inorganic powder flocculant used in the present invention can aggregate suspended suspended solids even at high pH. Moreover, since it is also possible to neutralize, it is not necessary to adjust pH before addition. Furthermore, since it can be aggregated only by adding and stirring and mixing with the waste water containing suspended suspended solids, the treatment process becomes easy. In addition, it has the characteristics that the flocs produced are strong and have good dewaterability, and that it has good separability from water due to the absence of stickiness of sludge. Furthermore, hexavalent chromium which is a harmful heavy metal can also be aggregated and removed.
[0023]
In FIG. 1, the inorganic powder flocculant is added from the adding device 11, and the waste water and the inorganic powder flocculant are mixed by the stirrer 9. Fine suspended suspended solids float in the wastewater, and colloidal particles among them are charged and do not settle even when they are electrically repelled. When such particles come into contact with the inorganic powder flocculant described above, they aggregate together to form large particles, which are further collected to grow into large flocs. When this floc increases, it settles and accumulates as sludge at the bottom of the container 3. The pump 10 shown in FIG. 1 is used to send sludge accumulated on the bottom of the container 3 to a dehydrating device such as a filter press (not shown). Further, the water in the upper part of the container 3 is provided with a line 12 at the upper part of the container 3, and can be drained by overflowing through the line 12. This water is generally fresh water and is discharged into rivers and the like by water quality inspection. In the present invention, in addition to the overflow, adjustment may be made using a control valve or the like so that a predetermined liquid level is obtained. Further, an appropriate amount may be drained using a pump or the like. Furthermore, both a control valve and a pump can be used.
[0024]
As the stirrer 9 shown in FIG. 1, any kind and type of the stirrer 9 can be used as long as the waste water stored in the container 3 and the inorganic powder flocculant can be mixed. As the pump 10, any pump 10 can be used as long as it can suck sludge accumulated on the bottom and send it to a dehydrator (not shown) and is waterproof. These can determine the stirring capacity, suction and discharge capacity according to the amount of waste water to be treated.
[0025]
FIG. 2 is a view showing a first embodiment of an addition apparatus used in the muddy water treatment apparatus of the present invention. The addition device 11 shown in FIG. 2 is provided with a filling container 14 for filling the inorganic powder flocculant 13, and a metering device 15 is provided at the bottom of the filling container 14. In FIG. 2, an air compressor 16 connected to the filling container 14 and the weighing device 15 is provided. Furthermore, the addition apparatus 11 shown in FIG. 2 is provided with a vibrator 17 so as to be inserted into the inorganic powder flocculant 13 filled in the filling container 14.
[0026]
In the addition device 11 shown in FIG. 2, compressed air from the air compressor 16 is branched halfway and supplied to the filling container 14 and the metering device 15. In the filling container 14, the inorganic powder flocculant 13 filled therein. Is filled in the metering device 15 so as to be pushed by compressed air. Further, when the inorganic powder flocculant 13 is filled in the metering device 15, the inorganic powder flocculant 13 filled in the filling container 14 is vibrated by the vibrator 17 so as not to create a void portion in order to close the filling. Has been. 2, the inorganic powder flocculant 13 filled in the metering device 15 is pushed out by compressed air from the air compressor 16 and can be added to the processing unit 8 of the container 3 shown in FIG. It has become.
[0027]
The filling container 14 shown in FIG. 2 can have any shape and size as long as the inorganic powder flocculant 13 can be appropriately filled in the measuring device 15 provided at the bottom. In addition, since compressed air is supplied at the time of filling, the material or thickness can withstand the pressure of the compressed air. As the air compressor 16 shown in FIG. 2, any type of air compressor 16 can be used as long as it can supply air of the pressure and air volume required to the filling container 14 and the metering device 15. Furthermore, the vibrator 17 can be used as necessary, and may not be used in the present invention.
[0028]
FIG. 3 is a view showing a second embodiment of the addition apparatus used in the muddy water treatment apparatus of the present invention. The addition device 11 shown in FIG. 3 is provided with a filling container 14 for filling the inorganic powder flocculant 13, as in the addition device 11 shown in FIG. 2, and a weighing device 15 is provided at the bottom of the filling container 14. Is provided. Further, the addition device 11 shown in FIG. 3 is provided with an air compressor 16 connected to the filling container 14 and the metering device 15. Furthermore, the addition apparatus 11 shown in FIG. 3 is provided with a vibrator 17 outside the filling container 14. As the vibrator 17 shown in FIG. 3, a mold vibrator is used and can be disposed outside the filling container 14. The vibrator 17 shown in FIG. 3 is filled with the inorganic powder flocculant 13 in the metering device 15 so that the vibrator 17 is vibrated from the outside and vibrated from the outside by the vibrator 17 and filled in the filling container 14. The agent 13 is vibrated so as not to create a void portion. In the present invention, it may be disposed at any position outside the filling container 14.
[0029]
FIG. 4 is a view showing a metering device used in the addition device of the present invention. The metering device 15 shown in FIG. 4 is provided with a line 18 communicating with the air compressor 16 shown in FIG. 2 for supplying compressed air from the air compressor 16 shown in FIG. A processing unit 8 shown in FIG. 1 includes a disk 20, an electric motor 21 connected to the disk 20 and capable of rotating the disk 20, and an inorganic powder flocculant 13 filled in a hole 19 of the disk 20 together with compressed air. And a line 22 for adding to.
[0030]
The disk 20 shown in FIG. 4 supports the inorganic powder flocculant 13 in the filling container 14 so as not to fall, and can fill the holes 19 with the inorganic powder flocculant 13. Further, a gear 23 having gears is provided at the lower part of the disk 20 so that the gears of the gear 24 connected to the electric motor 21 and the gears of the gear 23 of the disk 20 can be rotated. It has become. The line 18 and the line 22 shown in FIG. 4 are arranged at the same position on the plane, and when the hole 19 provided in the disk 20 is rotated and becomes between the line 18 and the line 22, the line 18 is supplied through the line 18. The compressed air thus pushed out the inorganic powder flocculant 13 filled in the holes 19 and is discharged through the line 22. The inorganic powder flocculant 13 can be added into the processing section 8 of the container 3 shown in FIG. 1 by being pushed out by compressed air. The disk 20 has one hole 19 through which the compressed air supplied through the line 18 can pass, and the filled inorganic powder flocculant 13 does not fall below the other holes 19. Is supported by a plate or the like.
[0031]
In the present invention, the disk 20 may be provided with any number and size of the holes 19, and the plurality of holes 19 have the same distance from the center of the disk 20. Further, the diameters of the line 18 and the line 22 can be determined according to the size of the hole 19. Furthermore, the height of the filling container 14 can be lowered by making the disk 20 larger. In addition to the electric motor 21, anything that can rotate the disk 20 such as an internal combustion machine can be used.
[0032]
FIG. 5 is a view showing a cross section of the weighing device 15 shown in FIG. 4 cut along a cutting line AA. The filling container 14 shown in FIG. 5 has a shape in which a circular arc is cut out, and a line 18 through which compressed air supplied from the air compressor 16 shown in FIG. . The filling container 14 is filled with an inorganic powder flocculant 13, and a vibrator 17 is inserted in the center of the inorganic powder flocculant 13. In addition, a disk 20 is provided at the lower part of the filling container 14 shown in FIG. 5, and the inorganic powder flocculant 13 is filled into the plurality of holes 19 provided in the disk 20 by its own weight. . Further, the disk 20 is rotated by an electric motor (not shown), and a plurality of holes 19 are provided at positions equidistant from the center of the disk 20 so that the compressed air supplied from the line 18 is supplied through the holes 19. Yes.
[0033]
The inorganic powder flocculant 13 filled in the hole 19 shown in FIG. 5 is pushed out of the hole 19 by the compressed air supplied through the line 18 when the disk 20 is arranged below the line 18 by rotating. . When the disk 20 is rotated and disposed below the filling container 14, the inorganic powder filler 13 is again filled in the holes 19. In the present invention, a predetermined amount of the inorganic powder flocculant 13 can be added by controlling the number of rotations of the disk 20 or stopping the compressed air from the air compressor 16 shown in FIG.
[0034]
Hereinafter, the muddy water treatment method will be described in detail with reference to FIG. FIG. 6 is a diagram showing a state where turbid water treatment is performed using the turbid water treatment apparatus 1 of the present invention. The drainage shown in FIG. 6 is supplied to the groove 4 of the container 3 through the drainage pipe 2. The waste water supplied through the drain pipe 2 may be any waste water such as cement waste water. Further, the waste water is supplied to the detection unit 6 partitioned by the partition plate 5 of the container 3 by overflowing the groove 4. In FIG. 6, it is possible to prevent a relatively large suspended substance or suspended substance in the waste water from being supplied into the container 3 by overflowing the waste water. By doing so, suspended solids supplied into the container 3 can be reduced as much as possible.
[0035]
The detection unit 6 shown in FIG. 6 is provided with two detection rods 7a and 7b for measuring the turbidity of the wastewater so that the turbidity of the supplied wastewater can be measured. In the detection rods 7a and 7b, sound waves are transmitted from one side, and the turbidity is measured by receiving the sound waves transmitted from the other side. The measured turbidity is roughly divided into three ranges such as fresh water, intermediate, and turbid water, and the amount of inorganic powder flocculant 13 added is determined accordingly. The amount of these inorganic powder flocculants 13 can be set by performing a test in advance. In the present invention, it may be possible to control in more detail as more ranges, not three ranges, but it is preferable to set the three ranges because the control becomes complicated. In addition, the inorganic powder flocculant 13 used in the present invention does not have an environmental problem when the agglomeration ability is reduced or remains as sludge even if the addition amount is too large. However, the range can be made as small as the three ranges described above.
[0036]
The separation plate 5 shown in FIG. 6 separates the detection unit 6 and the processing unit 8, and the upper and lower sides of the partition plate 5 are connected to the processing unit 8. The detection unit 6 drains upper clear water and lower sludge 25. Can be moved. Further, in the waste water of the processing unit 8, a stirrer 9 and a pump 10 are installed, and an adding device 11 for adding the inorganic powder flocculant 13 determined as described above is installed on the upper part of the processing unit 8. Yes. The disk 20 of the metering device 15 is rotated so that the added amount of the inorganic powder flocculant 13 determined as described above is rotated, and compressed air is supplied through the line 18 so that the inorganic powder flocculant 13 is added. The In the present invention, the inorganic powder flocculant 13 is added when the muddy water flows in, and the addition of the inorganic powder flocculant 13 is stopped when the muddy water flow stops. In the present invention, a valve or the like may be provided on the line 18 or 22, and the addition amount may be controlled by the valve or the like according to the turbidity measured by the detection rods 7a and 7b.
[0037]
The hole 19 filled with the added inorganic powder flocculant 12 is filled again with the inorganic powder flocculant 13 from the filling container 14 by the rotation of the disk 20. In the present invention, since the filling container 14 is a sealed container, compressed air from an air compressor (not shown) is supplied into the filling container 14, and the inorganic powder flocculant 13 filled inside with the compressed air. The hole 19 can be filled by pressing. Further, by inserting a vibrator 17 into the inorganic powder flocculant 13 and applying vibration to the inorganic powder flocculant 13 filled in the filling container 14, the gap between the flocculants is reduced, and the filled inorganic system The powder flocculant 13 can be made dense.
[0038]
By mixing the inorganic powder flocculant 13 and the wastewater added from the addition apparatus 11 shown in FIG. 6 with the stirrer 9, the suspended suspended solids 26 and the inorganic powder flocculant 13 in the wastewater are aggregated, A large floc 27 is generated and settled. At the bottom of the container 3, the flocks 27 gather to form a sludge 25. In addition, even when a toxic heavy metal such as hexavalent chromium is contained together with the suspended suspended solid 26, the suspended agglomerated material 26 can be aggregated in the same manner. The formed sludge 25 is sucked by the pump 10 and supplied to a dehydrator (not shown). The dehydrated cake after dehydration in a dehydrator (not shown) can be discarded to a management-type disposal site. Further, dehydrated water is water that contains almost no harmful substances or impurities, and can be discharged into rivers and the like. Furthermore, the water in the upper part of the container 3 is drained through the line 11 and can be discharged into a river after performing a water quality test. Moreover, it can also recycle to the muddy water processing apparatus 1 of this invention, and can reprocess as needed, and can also be supplied to other processing equipment. Furthermore, it can be used not only for discharge to rivers, but also for anything depending on water quality.
[0039]
【The invention's effect】
As described above, the turbid water treatment apparatus and the turbid water treatment method of the present invention can easily determine the addition amount of the inorganic powder flocculant and perform initial adjustment of pH and the addition of other flocculants. In addition, it is possible to perform a sufficient treatment for any turbidity waste water.
[0040]
Moreover, harmful heavy metals such as hexavalent chromium can be removed together with suspended suspended solids in waste water. Furthermore, since the generated floc is strong and has good dewaterability, the dehydration time can be greatly shortened when dehydration is performed.
[Brief description of the drawings]
FIG. 1 is a diagram showing a muddy water treatment apparatus of the present invention.
FIG. 2 is a diagram showing a first embodiment of an addition apparatus used in the muddy water treatment apparatus of the present invention.
FIG. 3 is a diagram showing a second embodiment of an addition apparatus used in the muddy water treatment apparatus of the present invention.
FIG. 4 is a view showing a metering device of an adding device used in the muddy water treatment device of the present invention.
FIG. 5 is a view showing a cross section of the weighing device shown in FIG. 4 cut along a cutting line AA.
FIG. 6 is a view showing a place where wastewater is treated using the muddy water treatment apparatus of the present invention.
[Explanation of symbols]
1 ... Muddy water treatment equipment
2 ... Drain pipe
3 ... Container
4 ... Groove
5 ... Partition plate
6 ... Detector
7a, 7b ... detection rod
8 ... Processing unit
9 ... Agitator
10 ... Pump
11 ... Addition equipment
12 ... Line
13 ... Inorganic powder flocculant
14 ... Filling container
15 ... Measuring device
16 ... air compressor
17 ... Vibrator
18 ... Line
19 ... hole
20 ... Disc
21 ... Electric motor
22 ... Line
23, 24 ... Gear
25 ... Sludge
26 ... Suspended suspended solids
27 ... Frock

Claims (8)

A container connected to a drain pipe and containing drainage;
Turbidity measuring means for measuring the turbidity of the wastewater contained in the container using sound waves;
An addition device for adding a predetermined amount of the inorganic powder flocculant according to the measured turbidity;
A stirrer that stirs and mixes the waste water contained in the container and the inorganic powder flocculant;
It was placed on the bottom of the container and a pump <br/> Bei example for sending the aggregate,
The inorganic powder flocculant is 35 to 77% by mass of silicon dioxide, 5 to 15% by mass of aluminum oxide, 1 to 5% by mass of potassium oxide, 1 to 5% by mass of sodium oxide, and 10 to 20% of iron oxide. Mass%, sulfur trioxide is 5 to 15 mass%, calcium oxide is 0.5 to 2 mass%, carbon is 0.5 to 3 mass%,
Turbid water treatment equipment.   The turbidity measuring means is a detection rod, and the detection rod has a bifurcated tip, transmits sound waves from one side, and receives the sound waves on the other side. The muddy water treatment apparatus according to 1.   The addition device is filled with the inorganic powder flocculant and sealed, an air compressor, a vibrator, a disk provided with a plurality of holes in the periphery, and for rotating the disk The turbid water treatment apparatus according to claim 1, further comprising an electric motor, wherein the addition amount of the inorganic powder flocculant is controlled by a signal from the turbidity measuring unit. The container is provided with a partition plate so that the drainage can move on the upper side and the lower side, is connected to the drainage pipe, and includes a detection unit including the turbidity measuring means, the addition device, and the stirring The muddy water treatment apparatus of any one of Claims 1-3 divided into a process part provided with a machine and the said pump. A step of supplying wastewater to a container, a step of measuring the turbidity of the wastewater using sound waves, and adding a predetermined amount of an inorganic powder flocculant from an addition device according to the measured turbidity, wherein the step of the inorganic powder flocculant mixed by stirring by a stirrer, look including the step of delivering the aggregates of the container bottom and,
The inorganic powder flocculant is 35 to 77% by mass of silicon dioxide, 5 to 15% by mass of aluminum oxide, 1 to 5% by mass of potassium oxide, 1 to 5% by mass of sodium oxide, and 10 to 20% of iron oxide. Mass%, sulfur trioxide is 5 to 15 mass%, calcium oxide is 0.5 to 2 mass%, carbon is 0.5 to 3 mass%,
Muddy water treatment method. The turbidity treatment method according to claim 5 , wherein the turbidity is measured by transmitting a sound wave from one of the detection rods and receiving the sound wave on the other. In the adding device, compressed air is supplied to the filling container and the inorganic powder flocculant is filled in a plurality of holes provided in a peripheral portion of the disk while being vibrated by a vibrator, and the disk is rotated to a predetermined position. The muddy water treatment method according to claim 5 or 6 , wherein the inorganic powder agglomerate filled in the hole of the disk is added to the wastewater stored in the container by compressed air. The container is provided with a partition plate so that the drainage can be moved on the upper side and the lower side, connected to a drain pipe, and includes a detection unit including a turbidity measuring unit, the addition device, and the agitator. The muddy water treatment method according to any one of claims 5 to 7 , which is divided into a treatment unit including a pump.

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