JP2923381B2 - Screen residue bagging method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for crushing and washing uncrushed screen residue collected and collected from a water channel of a sewage treatment plant, a pumping station, etc., dewatering it, and then dewatering it into bags. The present invention relates to a method for bagging screen residue.

[0002]

2. Description of the Related Art In a sewage treatment plant, a pumping station, and the like, solids contained in sewage are separated from sewage, and the solids and sewage are separately treated. This solid matter is generally called a screen residue, and is collected from the sewage by being scooped and collected by a dust remover.Therefore, it contains a lot of uncrushed human feces and the like, and the water content is extremely high. In this state, it cannot be dumped, incinerated, or carried out to the dumping position. For this reason, the recovered screen residue is dehydrated to a required water content and treated. As a dewatering device for this screen residue, there are devices disclosed in Japanese Patent Publication No. 57-43049 and Japanese Patent Application Laid-Open No. 1-111718. After dehydration, the dewatering device is designed to push up into a pipe with an ascending gradient from below to a predetermined position, and to transport the pipe to a predetermined position.Moreover, since the pipe is almost sealed, the odor of the screen residue is all around. Spattering can be prevented.

[0003]

However, even if the screen residue is dehydrated and conveyed by a pressurized dehydration piston in a sealed conveying tube, it is stored in a hopper and then loaded on a truck or the like to be incinerated. Since the material is transported to the dumping place, the dewatered screen residue is released to the atmosphere during loading and transporting to a truck or the like, so that the screen residue is scattered or the odor drifts in all directions.

[0004] The present invention is a method for bagging screen residue, which is crushed, washed, dehydrated, dehydrated, and directly packaged in a fixed amount, so that the next transportation, incineration and disposal can be performed easily. The purpose is to provide.

[0005]

In order to achieve the above object, uncrushed materials such as sludge in the recovered screen residue of the present invention are crushed and washed through crushing means which is always sprayed with washing water. Later, this is squeezed and dewatered and transported in the pipeline,
After measuring the fixed amount at the measuring section provided at the end of the pipeline, the bag is put into the open standby bag installed at the lower portion of the pipeline, closed and bagged, and transported to an incineration plant or the like. It is characterized by. In this case, a shutter is provided at the lower end of the measuring section provided at the tip of the pressurized dewatering device so that it can be opened and closed, and the volume of the dewatered screen residue temporarily stored in the measuring section is measured by a level sensor. The shutter can be opened by the detection signal of the level sensor to discharge the storage screen residue.

[0006]

[Action] Screen residue collected from a sewage treatment plant, etc.
After crushing and washing are performed through a crushing means to which washing water is constantly jetted, desired dehydration is performed by a pressurized dehydrator using a piston or the like. Thereafter, the transfer is connected in such a manner as to be pushed upward by a pushing force of a piston or the like in the transfer pipe connected to the pressurized dewatering device, and a measuring unit is provided at the tip of the transfer pipe, and the measuring unit is provided. When a shutter provided to open and close in synchronization with the level sensor is opened and closed, a constant volume of dewatered screen residue is discharged from the pipeline. The dewatered screen residue is put into an open bag disposed below the pipeline, the mouth of the bag is closed, and then the bag is carried out to a bag carry-out room by a crane or the like. As a result, the screen residue mixed with the uncrushed sludge can be bagged by crushing, washing and dehydration in a fixed amount, so that it can be incinerated as it is and the odor can be prevented from scattering.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. The screen residue picked up and collected by a dust remover 1 or the like from a water channel of a sewage treatment plant, a pumping station or the like is continuously or intermittently supplied to a crushing / cleaning device 3 via a conveyor 2, and the crushing / cleaning device is provided. The pressure is supplied to a pressurized dewatering device 4 disposed below this via 3. The crushing and washing device 3 is provided at a position below the upper end of the conveyor 2, and is provided above the pressure dewatering device 4 so as to double as a hopper so that the screen residue can be easily introduced.

In the crushing and cleaning device 3, a press plate 32 and a roller 33 are provided in a casing 31 and the roller 33 is rotated so that the press plate 32 is pressed against the roller 33 with a required pressure. At the same time, a washing nozzle 34 is provided for injecting washing water at a required high pressure toward the outer peripheral surface of the roller 33 or between the roller 33 and the press plate 32 to wash dirt.

Thus, the casing 3 is moved from the conveyor 2 to the casing 3.
The collected screen residue put into the roller 1 falls between the press plate 32 and the roller 33,
Due to the rotation of the press plate 32 and the pressing force of the press plate 32 on the roller side, the uncrushed contaminants in the screen residue are crushed and washed with washing water jetted at a high pressure.

The pressurized dewatering device 4 is provided with a piston (or screw) 41 of a hydraulic cylinder for squeezing and dewatering the screen residue supplied from the pressurized dewatering device 3. It is provided in the dehydrating cylinder 42, and the piston 41 advances and retreats in the cylindrical dehydrating cylinder 42 by operating this cylinder to intermittently squeeze and dehydrate the screen residue supplied from the pressure dehydrating device 3. To A small or slit-shaped drainage hole (not shown) is formed in the lower peripheral surface of the cylindrical dehydrating cylinder 42 at the lower position of the pressure dehydrating apparatus 3 or the pressure dehydrating apparatus 3 On the extension of the dewatering cylinder 42 on the further downstream side, a cylindrical drainage screen 43 is provided as necessary.

The downstream end (right side in the figure) of the pressurizing and compressing section of the dehydrating apparatus having the hydraulic piston 41 is connected to a conveying pipe 5 which is cylindrical and bent to apply back pressure. And
A back pressure plate 51 is provided on the bent outer surface of the transfer pipe 5 so as to be swingable. The pipe line 5 provided in the back pressure portion may be a cylindrical transfer pipe line having a tapered shape such that the tip is expanded as necessary, or a parallel pipe when the transfer distance is relatively small. An opening is provided on the outer surface of the transfer pipeline, the back pressure plate 51 is fitted into the opening, and the lower end of the back pressure is swingably supported by a shaft, and the back pressure plate 51 is attached to the back pressure hydraulic cylinder. In accordance with the applied pressure, the water enters the pipeline, and the screen residue supplied into the pipeline is subjected to a required back pressure to dehydrate. This back pressure can be adjusted by the hydraulic pressure applied to a cylinder (not shown).

The conveying pipe 5 is mainly composed of a cylindrical conveying pipe. The conveying pipe is arranged vertically or inclined, and has a cylindrical or rectangular shape. Adopted. When the transfer tube is cylindrical, the pressure uniformity is excellent, and when the transfer tube is rectangular, the pressure uniformity is slightly inferior to that of the cylindrical tube, but is excellent in manufacturability and cleanability. Furthermore, in order to smoothly transfer the screen residue after dehydration, a low-friction material, for example, a high-density polyethylene thin film can be attached to the inner surface of the cylinder, or a fluororesin processing can be performed.

A measuring section 6 is provided at the end of the transport pipeline 5. This has a required internal volume, a shutter 61 is disposed at the lower end (bottom) so as to be openable and closable, and an upper portion is provided with a capacity of the dewatered screen residue temporarily stored in the measuring section 6 from a transport pipeline. Level sensor 62 for detecting
Is provided, the level sensor 62 detects that the amount of the stored screen residue has reached a certain level, and the shutter 61 is opened by this detection signal to discharge only the fixed amount stored in the measuring unit downward, The liquid is dropped and filled into the opened bag 8 provided below the shutter 61.

A plurality of bags 8 are arranged on the turntable 7 on a disk in an open state. Turntable 7
The bags 8 are rotated at a required speed by the driving device 71 and arranged at required intervals in the direction of the table rotation. At one point, the screen residue is put into the bags, and when the bags are filled, only one pitch turns. The table 7 is driven to close the mouth of the bag at a position distant from below the measuring unit, suspended by a crane 9 or the like, transported to a bag discharge chamber, transported to an incineration plant or the like, and disposed. Things.

[0015]

According to the method for bagging screen residue according to the present invention, even if uncrushed dirt and the like are mixed in the screen residue collected from a sewage treatment plant or the like, the screen residue is crushed, washed, and pressurized. After dewatering, transporting, and weighing, bags are packed, so that the screen residue collected from the treatment plant and the like can be continuously processed, and the bag-filled screen residues can be easily incinerated, etc. , And can be sanitized.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing processing steps of a method for bagging screen residue according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dust remover 2 Conveyor 3 Crushing and washing apparatus 4 Pressure dehydration apparatus 42 Piston 43 Back pressure plate 5 Conveyance line 6 Measurement unit 7 Turntable 8 bags

Continued on the front page. (72) Inventor Gunji Matsumoto 3-11-1, Shimosakabe, Amagasaki City, Hyogo Prefecture Inside Nippon Kiden Kogyo Co., Ltd. (72) Inventor Atsuo Hirai 3-11-1, Shimosakabe, Amagasaki City, Hyogo Prefecture (56) References JP-A-54-69251 (JP, A) JP-A-3-232599 (JP, A) JP-A-5-92149 (JP, A) 43049 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) C02F 11/00-11/20

Claims (2)

(57) [Claims] An uncrushed material such as sludge in the collected screen residue is crushed and washed through crushing means which is constantly sprayed with washing water, and then crushed and dewatered to be conveyed in a pipeline. After measuring the fixed amount by the measuring section provided at the end of the pipeline, the bag was charged and closed into the open standby bag provided at the lower end of the pipeline, packed into a bag, and transported to an incineration plant or the like. A method for bagging screen residue. 2. A shutter is provided at the lower end of a measuring section provided at the tip of the pressure dehydrating device so as to be openable and closable, and the volume of the dewatered screen residue temporarily stored in the measuring section is measured by a level sensor. 2. The method according to claim 1, wherein the measurement is performed, and the shutter is opened by the detection signal of the level sensor to discharge the stored screen residue.