CN202717651U - Coal washing wastewater integrated treatment equipment - Google Patents

Abstract

The utility model relates to an integrated water treatment device for coal washing wastewater, which is mainly composed of a reactor, a vertical flow slag removal tank, a sedimentation tank and a water purification processor. The top of the reactor is provided with a dosing port, a reactor water inlet and a reactor water outlet. The water outlet of the reactor is connected with the vertical flow slag removal tank. An overflow pipe is arranged on the top of the slag removal tank, which leads directly to the lower part of one end of the settling tank. The top of the other end of the sedimentation tank is provided with a water outlet of the sedimentation tank, and the water outlet of the sedimentation tank is connected with the water purifier. The bottom of the water purifier is provided with a purified water outlet. The utility model solves the environmental pollution problem of waste water produced by wet coal washing, and has simple structure and convenient installation and use. Fast flow rate, high precision, large filtration area, easy to clean and regenerate, long service life and wide application range; it is beneficial to the reuse of water resources.

Description

Coal washing wastewater integrated treatment equipment

technical field

The utility model relates to an integrated water treatment equipment for coal washing wastewater, in particular to an integrated water treatment equipment for industrial tail water of a coal mine wet coal washing process. This water treatment equipment solves the SS, COD, sludge, negatively charged fine particles and chroma in the wastewater, and completely avoids the pollution of surface water and groundwater caused by the direct discharge of coal slime water into the external environment. And the treated water can be reused directly.

Background technique

Coal washing wastewater is the industrial tail water of coal mine wet coal washing process, which contains a large amount of coal slime and sediment, which has caused serious pollution to the environment near the mining area. Coal washing wastewater is one of the main sources of pollution in the coal industry, and has drawn more and more attention. Coal washing wastewater is particularly stable and will not settle after standing for several months, so it is more troublesome to deal with.

Its main disadvantages are:

1. The surface of the particles has a negative charge, making the wastewater system in a colloidal state.

2. The concentrations of SS and CODcr are both high.

3. Fine particles have high viscosity and high content.

4. The specific resistance of sludge is large, and the filtration performance is poor.

Contents of the invention

In view of the above-mentioned shortcomings of coal washing wastewater, the purpose of this utility model is to invent an integrated water treatment equipment for coal washing wastewater, which can solve this problem once and for all, and improve the environment of the mining area.

The technical scheme of the utility model is:

An integrated water treatment equipment for coal washing wastewater, mainly composed of a reactor, a vertical flow slag removal tank, a sedimentation tank and a water purification processor. The top of the reactor is provided with a dosing port, a reactor water inlet and a reactor water outlet. The water outlet of the reactor is connected with the vertical flow slag removal tank. An overflow pipe is arranged on the top of the slag removal tank, which leads directly to the lower part of one end of the settling tank. The top of the other end of the sedimentation tank is provided with a water outlet of the sedimentation tank, and the water outlet of the sedimentation tank is connected with the water purifier. There is a microporous filter plate inside the water purifier, which separates the water purifier into upper and lower parts, and the bottom of the water purifier is provided with a purified water outlet.

The utility model solves the environmental pollution problem of waste water produced by wet coal washing, and has simple structure and convenient installation and use. Fast flow rate, high precision, large filtration area, easy cleaning and regeneration, long service life and wide application range; it is conducive to the reuse of water resources, greatly reduces equipment operation and cost, and makes the equipment fully autonomous and intelligent. And it occupies a small area, and can save energy very well.

Description of drawings

Fig. 1 is a schematic structural view of the integrated water treatment equipment for coal washing wastewater of the present invention.

In the figure: 1. Reactor, 2. Dosing port, 3. Reactor water inlet, 4. Reactor water outlet, 5. Agitator, 6. Reactor slag outlet, 7. Vertical flow slag removal tank, 8 .Slagging outlet of slag removal tank, 9. Sedimentation tank, 10. Sewage discharge port, 11. Water purification processor, 12. Water outlet of sedimentation tank, 13. Microporous filter plate, 14. Aeration device, 15. Fan, 16. Mud scraper, 17. Mud outlet, 18. Overflow pipe, 19. Clean water outlet.

Detailed ways

As shown in Figure 1, an integrated water treatment equipment for coal washing wastewater is mainly composed of a reactor 1, a vertical flow slag removal tank 7, a sedimentation tank 9 and a water purification processor 11. The top of the reactor 1 is provided with a dosing port 2 , a reactor water inlet 3 and a reactor water outlet 4 ; the bottom of the reactor 1 is provided with a reactor slag discharge port 6 . A stirrer 5 is installed in the reactor 1, and the water outlet 4 of the reactor communicates with a vertical flow slag removal tank 7 . The bottom of the vertical flow slag removal tank 7 is provided with a slag discharge port 8 of the slag removal tank. An overflow pipe 18 is installed on the top of the vertical flow slag removal tank 7, which leads directly to the bottom of one end of the settling tank 9. The top of the other end of the settling tank 9 is provided with a settling tank water outlet 12 , and the settling tank water outlet 12 communicates with the water purifier 11 . A sewage outlet 10 is provided at the bottom of the sedimentation tank 9 . There is a microporous filter plate 13 inside the water purifier 11, which separates the water purifier 11 into upper and lower parts. An aeration device 14 is installed in parallel above the microporous filter plate 13. The aeration device 14 is connected to the fan 15 installed outside the water purification processor 11. The gas sent by the fan 15 is continuously output to the water purification processor 11 through the aeration device 14. the upper part of the . A water purification outlet 19 is provided at the bottom of the water purification processor 11 .

The working process and principle of the utility model are: the reactor water inlet 3 adds water into the reactor 1, and the medicament is also added into the reactor 1 by the dosing pump through the dosing port 2. Thorough mixing can precipitate the negatively charged coal washing water and remove CODcr in the water. The reactor slag outlet 6 at the bottom of the reactor 1 can preferentially remove large particles in the water, and the water flows into the next vertical flow slag removal tank 7 through the reactor water outlet 4 . The vertical flow slag removal tank 7 utilizes the vertical flow sedimentation principle of water conservancy to make the medicament mix more fully, and at the same time remove the floating flocs produced in the water after the dosing, and discharge them through the slag discharge port 8 of the bottom slag removal tank system. The purified water enters the sedimentation tank 9 through the overflow pipe 18 at the top of the vertical flow slag removal tank 7, and the sedimentation tank 9 can further remove suspended impurities in the water. Solid impurities are discharged from the sewage outlet 10. Further purified water flows into the water purification processor 11 from the water outlet of the sedimentation tank. The water purifier 11 first aerates the water through the fan 15 and the aeration device 14 to remove the remaining CODcr in the water. At the same time, the microporous filter plate 13 in the water purification processor 11 makes the water flowing to the bottom of the water purification processor 11 be filtered into clean water. A self-priming pump is housed outside the outlet of the water-cleaning outlet 19, and negative pressure is generated by the self-priming pump, so that water is continuously passed through the microporous filter plate 13, and is discharged from the system by the water-cleaning outlet 19. Simultaneously, because the filtration accuracy of the microporous filter plate 13 is higher, some small impurities will adhere to the surface to form a filter cake. The mud discharge port 17 above the microporous filter plate 13. After a period of time, start the mud scraper 16 to scrape off the filter cake, and discharge it out of the system through the mud discharge port 17.

The treated water fully complies with the reuse standard. The workflow is completely intelligent, without human operation.

Claims (5)

1. An integrated water treatment equipment for coal washing wastewater, mainly composed of reactor (1), vertical flow slag removal tank (7), sedimentation tank (9) and water purification processor (11), characterized in that: The top of the reactor (1) is provided with a dosing port (2), a reactor water inlet (3) and a reactor water outlet (4); the reactor water outlet (4) is connected with the vertical flow slag removal tank (7) There is an overflow pipe (18) on the top of the slag removal tank (7), which leads directly to the bottom of one end of the sedimentation tank (9); the top of the other end of the sedimentation tank (9) is provided with a sedimentation tank outlet (12), and the sedimentation tank outlet (12) communicate with the water purifier (11); there is a microporous filter plate (13) inside the water purifier (11), which separates the water purifier (11) into upper and lower parts, and the water purifier (11) the bottom is provided with clean water outlet (19). 2. The water treatment device according to claim 1, characterized in that: an agitator (5) is installed in the reactor (1). 3. The water treatment equipment according to claim 1, characterized in that: the bottom of the reactor (1) is provided with a reactor slag outlet (6); the bottom of the vertical flow slag removal tank (7) is provided with a slag removal tank The mouth (8); the bottom of the sedimentation tank (9) is provided with a sewage outlet (10). 4. The water treatment equipment according to claim 1, characterized in that: an aeration device (14) is installed in parallel above the microporous filter plate (13), and the aeration device (14) is connected to the outside of the water purifier (11) The installed blower fan (15) links to each other. 5. The water treatment equipment according to claim 1 or 4, characterized in that: a mud scraper (16) is provided on the microporous filter plate (13), and a microporous filter (16) is provided on the water purification processor (11). The mud outlet (17) above the filter plate (13).