JPH0640997B2 - River sewage purification device and block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a river sewage purification apparatus and a block.

(Prior Art) Conventionally, the following method has been performed as a method for purifying a river.

i) Gravel contact oxidation method Excavating riverbeds, etc., laying gravel in advance, installing perforated pipes at regular intervals to backfill the earth and sand, and introducing river water into the gravel layer through perforated pipes by an intake weir. Then, the water in the river is purified by the adsorption, precipitation, and oxidation effects of the gravel and the biofilm attached to the gravel, and the purified water is collected by the water collecting perforated pipe and returned to the river.

ii) Introduction of dilution water Create a bypass from a clean river and introduce a large amount of clean water through the bypass to reduce the concentration of polluted water and purify water quality.

iii) Oxidation pond River water is introduced into the pond, and bio-oxidation is performed using sedimentation and DO generated by plankton, and the water is returned to the river.

(Problems to be Solved by the Invention) However, the i) gravel contact oxidation method has the following problems.

a) A wide riverbed and land are required, and the required facilities cannot be built in places where there are no single-section rivers or land such as urban rivers.

b) Mud generated by water purification between gravel will cause clogging with the passage of time.

In this case, the gravel replacement work becomes large-scale, and the work is difficult.

c) It is necessary to establish a new fishway so as not to disturb the ecology of fish.

d) I can't smell.

Further, the purification method by introducing the dilution of ii) has the following problems.

a) Since the securing of water sources depends on the regional characteristics, the places of utilization are limited.

b) It is not a fundamental purification of water quality.

c) Depending on the location of the water source, the cost of bypass becomes enormous due to soaring land in urban areas, which is not practical.

Further, the above method iii) using the oxidation pond has the following problems.

a) Dwell time of 10 to 30 days is required.

b) Large land is required and it is difficult to set up ponds in urban areas.

The present invention has been proposed in view of the above problems of the prior art, the object of which is to purify the sewage of a river that does not require a vast land, has an excellent river purification effect, and is easy to maintain. The point is to provide the device and the block used for the device.

(Means for Solving the Problems) In order to achieve the above-mentioned object, in a river sewage purification device according to the present invention, an outer shell is smaller than the bottom plate and at least two sides are permeable on the upper surface of a rectangular bottom plate. Along with standing the rectangular frame having, the sewage purification contact material is built into the frame, a concrete block made by closing the rectangular upper lid piece on the upper part of the frame, on the riverbed, The respective bottom plates are installed so as to be adjacent to each other.

Further, in order to facilitate cleaning and replacement of the contact material for purifying wastewater, the block for purifying wastewater of a river according to the present invention has a rectangular bottom plate with an outer shell smaller than the bottom plate and at least two sides being permeable. The rectangular frame body having a space for containing the contact material for purifying sewage having the above is erected, and an upper lid piece is attached to the top of the frame body so as to be openable and closable.

(Operation) Since the river wastewater purification device according to the present invention is configured as described above, the bottom plate and the rectangular frame of the adjacent concrete block structure in which the wastewater of the river is erected on the riverbed of the same river Flow through the corridor formed between the two sides, flow into and out of the same rectangular frame body through the permeable portions provided on at least two sides thereof, and pass through the sewage purification contact material contained in the frame body between them. Be purified.

When the contact material causes clogging, the upper lid piece of the rectangular frame body in the concrete block is opened, and the contact material in the frame body is replaced and cleaned.

(Examples) The present invention will be described below with reference to illustrated examples.

(A) is a concrete river sewage purification block, a rectangular frame whose outer shell is smaller than the bottom plate (2) on the upper surface of a rectangular bottom plate (2) with connecting rebars (1) protruding in the corners. (3) is erected concentrically.

At least two sides of the rectangular frame (3) are formed in a transmissive portion having a through hole (4), and an insert nut (5) is embedded in the upper surface of the corner portion. In the illustrated embodiment, through holes are formed on two opposite sides.
(4) is provided.

Reference numeral (6) is an upper lid piece, and bolt through holes (7) are provided at portions corresponding to the insert nut (5) at four corners thereof.

Thus, in the rectangular frame (3), a net bag (8) containing a contact material (B) for sewage purification such as gravel, gravel, and other porous stones and fibers is incorporated, and the upper lid piece (6) ) On the same piece (6) with bolt through hole (7)
Attach the connecting bolt (9) that penetrates to the upper surface of the rectangular frame (3).

In this way, the block (A) containing the contact material (B) for purifying sewage is laid on the bed of the river so that the bottom plates (2) of the adjacent blocks are in contact with each other.

(D) in the figure is a revetment or embankment.

Since the illustrated embodiment is constructed as described above, the flowing water of the river is directly passed through the through hole (3) in the rectangular frame (3) of the block (A) as shown by the arrows in FIGS. 5 and 7. 4) Direct inflow and outflow through the bottom plate (2) of the adjacent block (A) and the rectangular frame
The rectangular frame (3) flowing through the corridor formed between (3)
In and out.

In this way, the flowing water of the river is the rectangular frame of each block (A).
When flowing into and out of the inside of (3), it comes into contact with the contact material (C) contained in the frame (3) to be purified.

When the contact material (B) is clogged, the upper lid piece (6) of the block (A) is removed, and the contact material (B) is cleaned and replaced.

(Effects of the Invention) As described above, the river sewage purification device according to the present invention is such that a rectangular frame body having an outer shell smaller than the bottom plate and at least two sides having permeability is erected on the upper surface of the rectangular bottom plate, The concrete block structure with the contact material for purifying sewage built in the frame body and the upper lid piece closed on the upper part of the frame body was installed so that each bottom plate was adjacent to the river bed of the river. A corridor is formed between the blocks by the peripheral portion of the bottom plate and the rectangular frame, and the flowing water of the river directly flows in and out of the rectangular frame through two transparent sides or flows in through the corridor. It is to be purified by being taken out and coming into contact with the sewage purification contact material in the frame body. According to the present invention, a river water purification apparatus is constructed by utilizing the river bed of the river in this way. Therefore, it requires a wide riverbed outside the embankment and a site within the embankment. No, it is economical, and since the purification device is blocked, the construction is simple.

Further, according to the present invention, since the concrete block is used to purify the sewage of the river, even if the width of the river is increased, by increasing the number of blocks arranged,
It can also be applied to large rivers, and since the block is placed on the river bed, the flow of the river flows inside the contact material to purify the water quality and the block follows the change of the river bed. , Does not adversely affect the water purification effect.

Further, since the corridor is provided between the adjacent blocks, the river water easily passes through the contact material contained in the rectangular frame of the block, and the efficiency of purifying waste water is improved.

Further, since the contact material is built in the rectangular frame of the block, the contact material is prevented from being washed away, and various contact materials having high purification efficiency can be used.

In the invention of claim 2, since the upper lid piece is openably and closably attached to the top of the rectangular frame of the block, even if the contact material is clogged, the upper lid piece is removed and the contact material is replaced, It can be easily cleaned and maintained easily.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a river wastewater purification block according to the present invention, FIG. 2 is a perspective view of the same block, and FIG. 3 is an embodiment of a river wastewater purification device according to the present invention. FIG. 4 is a plan view thereof, FIG. 5 is a side view thereof,
6 is a view taken along the line XX of FIG. 4, and FIG. 7 is a view taken along the line YY of FIG. (A) …… Sewage purification block, (B) …… Sewage purification contact material, (C) …… River bed, (2) …… Bottom plate, (3) …… Square frame, (4) …… Through hole, (6) …… Top lid piece.

Claims (2)

[Claims] 1. A rectangular frame body having an outer contour smaller than that of the bottom plate and having permeability on at least two sides is erected on the upper surface of the rectangular bottom plate, and a contact material for purifying sewage is built in the frame body. A sewage purification apparatus for a river, characterized in that a concrete block, which is formed by closing a rectangular upper lid piece on the upper part of the frame, is installed on the riverbed of the river so that respective bottom plates are adjacent to each other. 2. A square frame body having an outer space smaller than that of the bottom plate and at least two sides having a permeable wastewater purification contact material built-in space is erected on the upper surface of the square bottom plate, and
A river sewage purification block characterized in that an upper lid piece is openably and closably attached to the top of the frame.