CN205241438U - Contain coal waste water electron flocculation facility - Google Patents

Abstract

The utility model discloses an electronic flocculation facility for coal-containing wastewater, which comprises a coal-water sedimentation tank, an electronic flocculator, a sedimentation reaction tank, an intermediate clear water tank, a multi-media filter and a reuse water pool arranged according to the process steps. In order to pump the coal-containing wastewater in the coal-water sedimentation tank into the electronic flocculator; the coal-containing wastewater is flocculated in the electronic flocculator and then pumped into the sedimentation reaction tank, and the particulate matter is returned to the coal-water sedimentation tank through the return pipe; the coal-containing wastewater is in the Settling in the sedimentation reaction tank, the sediment is discharged back to the coal-water sedimentation tank through the sewage pipe, and the clean water is introduced into the intermediate clear water tank through the overflow pipe; the clear water is pumped from the intermediate clear water tank into the multi-media filter for filtration; the sediment in the multi-media filter With the backwash water, it returns to the coal water sedimentation tank, and the filtered water is led into the reuse water tank through the pipeline for water use in the factory area. As an emerging energy-saving and environment-friendly technology, the utility model can generate considerable economic benefits and has great application value.

Description

Electronic flocculation facility for coal-containing wastewater

technical field

The utility model relates to a wastewater treatment process and equipment, in particular to an electronic flocculation process and facility for coal-containing wastewater.

Background technique

The coal-containing wastewater mainly comes from the spraying wastewater of the coal yard, the washing wastewater of the coal trestle and the initial rainwater of the coal yard.

The problems of the traditional dosing flocculation + membrane filtration treatment system for coal-containing wastewater:

1. Coal-containing wastewater contains a large amount of coal powder particles, and the particle size distribution is uneven. There are a large number of fine particle size particles with a low density, which causes the suspended solids to fail to settle naturally.

2. Dosing flocculation must be accurately calculated to achieve a better flocculation effect. Too little or too much dosing will reduce the flocculation effect.

3. The flushing water of the coal conveying system is not continuous, and the water quality indicators (TSS, PH, water volume, water temperature, etc.) The flocculation effect is poor, and the effluent after treatment is getting worse.

4. At present, the formula ratio of each manufacturer in the pharmaceutical market is different. If the purchased manufacturer is different, there will be a new calculation for the dosage.

5. Dosing flocculation has high requirements on water quality, too much or too little dosing will result in unqualified effluent, which will affect the stable operation of the entire system.

Utility model content

Aiming at the deficiencies of the prior art, the technical problem to be solved by the utility model is to propose an energy-saving and environment-friendly electronic flocculation facility for coal-containing wastewater.

The coal-containing wastewater electronic flocculation facility that can solve the above-mentioned technical problems, its technical solution includes a coal-water sedimentation tank, an electronic flocculator, a settling reaction tank, an intermediate clear water tank, a multi-media filter and a return Using a pool, the coal-water sedimentation tank is connected to the electronic flocculator through the pump tube, the electronic flocculator is connected to the sedimentation tank through the pump tube, and the electronic flocculator is also connected to the coal-water sedimentation tank through the return pipe, and the sedimentation tank is connected through the overflow The flow pipe is connected to the intermediate clean water tank, and the settling reaction tank is also connected to the coal-water sedimentation tank through the sewage pipe. A backwashing device is arranged in the filter and is connected to a coal-water sedimentation tank through a backwashing pipe, and the reused water pool is connected to a water pump pipe.

The beneficial effects of the utility model:

1. The treatment method adopted by the coal-containing wastewater electronic flocculation facility of this utility model is an advanced physical treatment method. There is no chemical agent added in the whole process, no secondary pollution, and it is a completely environmentally friendly product.

2. The utility model operates fully automatically without manual maintenance, the equipment runs stably, and basically does not require equipment maintenance.

3. The utility model can be applied as a new energy-saving and environmental protection technology. After the project is implemented, the operation and maintenance costs can be saved by about 1 million yuan per year, which will generate considerable economic benefits for the development of enterprises and have great application value.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the present invention.

Fig. 2 is a plan view of the embodiment of Fig. 1 .

Drawing number identification: 1. Coal water sedimentation tank; 2. Electronic flocculator; 3. Settling reaction tank; 4. Intermediate clean water tank; 5. Multimedia filter; 6. Reuse water tank; 7. Pump pipe; 8. Return 9. Pipeline; 10. Sewage pipe; 11. Backwash pipe; 12. Water pump pipe; 13. Overflow pipe; 14. Coal-containing wastewater discharge pipe.

detailed description

The technical solutions of the present utility model will be further described below in conjunction with the embodiments shown in the accompanying drawings.

The technical scheme of the utility model electronic flocculation facility for coal-containing wastewater includes a coal-water sedimentation tank 1, an electronic flocculator 2, a sedimentation reaction tank 3, an intermediate clear water tank 4, a multi-media filter 5 and a reuse water tank 6.

The coal-water sedimentation tank 1, the middle clear water tank 4 and the reuse water tank 6 adopt the pit form, and the electronic flocculator 2 and the sedimentation reaction tank 3 are built on the ground between the coal-water sedimentation tank 1 and the middle clear water tank 4 , the multimedia filter 5 is built on the ground between the intermediate clean water pool 4 and the reuse water pool 6, as shown in Fig. 1 and Fig. 2 .

The water inlet of the coal-water sedimentation tank 1 is connected to the coal-containing wastewater discharge pipe 14, the water outlet of the coal-water sedimentation tank 1 is connected to the water inlet of the electronic flocculator 2 through the pump pipe 7, and the slag discharge port of the electronic flocculator 2 is passed through the return pipe 8 is connected to the coal-water sedimentation tank 1, and the water outlet of the electronic flocculator 2 is connected to the water inlet of the sedimentation reaction tank 3 through the pump tube 7, and the water outlet of the sedimentation reaction tank 3 is connected to the water inlet of the middle clear water tank 4 through the overflow pipe 13 The sewage outlet of the sedimentation reaction 3 is connected to the coal-water sedimentation tank 1 through the sewage pipe 10, and the water outlet of the intermediate clear water tank 4 is connected to the water inlet of the multimedia filter 5 through the pump pipe 7, and the outlet of the multimedia filter 5 The water inlet is connected to the water inlet of the recycling pool 6 through the pipeline 9, and a backwashing device is arranged in the multimedia filter 5, and the slag outlet of the multimedia filter 5 is connected to the coal water sedimentation tank 1 through the backwashing pipe 11. The water outlet of the water pool 6 is connected with the water pump pipe 12, as shown in Fig. 1 and Fig. 2 .

The electronic flocculator 2 conventionally adopts two in parallel, and the corresponding settling reaction tank 3 is set as two in parallel to match its processing capacity, and the multimedia filter 5 is set as 12 in parallel, as shown in the figure 2 shown.

According to the layout of various facilities for electronic flocculation of coal-containing wastewater, the process steps of the utility model electronic flocculation process for coal-containing wastewater are:

1. The coal-containing wastewater is discharged to the coal-water sedimentation tank 1 through the coal-containing wastewater discharge pipe 14, and the larger materials directly sink to the bottom.

2. The coal-containing wastewater is pumped into the electronic flocculator 2 through the pump tube 7. After the electrode plate is energized, an electric field is generated, and the fine charged particles, colloids, macromolecular proteins, virus particles, cells, etc. move directionally and collide under the action of the electric field. The destabilization of the compressed double electron layer leads to the destabilization and flocculation of the double electric layer. The flocs formed can absorb fine colloids and other substances to form large particles to accelerate precipitation.

3. The coal-containing wastewater after flocculation treatment is pumped into the sedimentation reaction tank 3 through the pump pipe 7, and the precipitated particles are discharged back to the coal-water sedimentation tank 1 through the return pipe 8.

4. The impurities in the coal-containing wastewater continue to settle in the settling reaction tank 3, and the sediment is discharged to the coal-water sedimentation tank 1 through the sewage outlet through the blowdown pipe 10, and the clear water passes through the overflow pipe 13 (connected to the bottom of the settling reaction tank 3). overflow port) into the middle clear water tank 4.

5. Clean water is pumped from the middle clean water tank 4 through the pump tube 7 into the multimedia filter 5 for further filtration. The filter medium of the multimedia filter 5 is not affected by grease, and there is a certain amount of anthracite in the medium that can absorb and remove most of it. Oil, reduce the oil content of water.

6. The clean water filtered by the multi-media filter 5 is introduced into the reuse pool 6 through the pipeline 9. After the residue in the multi-media filter 5 is washed by the built-in backwash device, it is backwashed from the slag outlet. The pipe 11 is discharged back to the coal water sedimentation tank 1.

7. Use the water pump pipe 12 to pump the clean water in the reuse water pool 6 to the water unit required by the coal yard.

Under the control of the central intelligent controller PLC, the facility of the utility model runs continuously and automatically from the coal-containing waste water entering to the recycling of clean water, without adding chemical agents and taking film-laying measures.

Claims (1)

1. containing coal waste water electric flocculation facility, it is characterized in that: comprise coal water sedimentation pond (1), electricitySub-flocculator (2), sedimentation reaction tank (3), middle clear water reserviors (4), more medium filter (5)And reuse pool (6), described coal water sedimentation pond (1) is communicated with electric flocculation device (2) by pump line (7),Described electric flocculation device (2) is communicated with sedimentation reaction tank (3), electric flocculation device (2) by pump line (7)Also be communicated with coal water sedimentation pond (1) by return duct (8), described sedimentation reaction tank (3) is by overflowClear water reserviors (4) in the middle of pipe (13) is communicated with, sedimentation reaction tank (3) also connects by blow-off pipe (10)Logical coal water sedimentation pond (1), described middle clear water reserviors (4) are communicated with multi-medium filtering by pump line (7)Device (5), described more medium filter (5) is communicated with reuse pool (6) by pipeline (9), is situated between moreIn mass filter (5), be provided with back purge system and be communicated with coal water sedimentation by backwash tube (11)Pond (1), described reuse pool (6) is communicated with water pump pipe (12).