Sewage anti-blocking efficient defluorination filter tank

Abstract

A sewage anti-blocking efficient defluorination filter tank comprises a water inlet well, a water distribution channel and a filter tank body, a backwashing water outlet pipe gallery is arranged on the water inlet side of the filter tank body, a filter tank water outlet pipe gallery is arranged on the water outlet side of the filter tank body, a defluorination filter material layer, a supporting layer and filter bricks are sequentially arranged in the filter tank body from top to bottom, and a backwashing water discharge well is arranged between the filter tank body and the water distribution channel. A backwashing water outlet pipe is arranged in the backwashing water outlet pipe gallery, two ends of the backwashing water outlet pipe are respectively communicated with a backwashing water discharge well and a wastewater pool, a filter water outlet pipe is arranged in the filter water outlet pipe gallery, one end of the filter water outlet pipe is connected with the bottom of the filter, the other end of the filter water outlet pipe is respectively connected with a backwashing water inlet pipe and a clean water pool, and the backwashing water inlet pipe is connected with the clean water pool through a backwashing water pump. Through the pool type structure, the defluorination effect can be obviously enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device for removing fluorine from sewage belongs to sewage fluorine removal processing technical field. BACKGROUND

[0002] If the fluoride in the sewage is not removed, the fluoride content in the water environment will increase, and excessive fluoride will pose a threat to human health and the ecological environment, so it is necessary to reduce the fluoride content in the drainage.

[0003] The current fluorine removal technologies include ion exchange, reverse osmosis, electrodialysis, coagulation sedimentation, adsorption and the like. Among them, the adsorption method mainly uses adsorbent materials with strong affinity for fluoride to adsorb and treat the fluoride in the sewage.

[0004] The fluorine removal technology by adsorption has the problems of poor effect and easy plugging of filter material, and it is urgent to optimize the reaction tank type, improve the fluorine removal efficiency and reduce the operation cost. SUMMARY

[0005] In view of the problems of poor effect and easy plugging of filter material in the existing fluorine removal technology by adsorption, the utility model provides a fluorine removal filter tank which is efficient and not easy to be plugged.

[0006] The utility model discloses a sewage high -efficient anti -block fluorine removal filter tank adopts the following technical scheme:

[0007] The efficient fluorine removal filter tank comprises a water inlet well, a water distribution channel, a backwashing water discharge well, a filter tank, a backwashing water outlet pipe gallery, a filter tank water outlet pipe gallery, a waste water tank and a clean water tank.

[0008] The water inlet well is communicated with the water distribution channel through a reserved hole.

[0009] The filter tank is divided into filter grids, and water distribution grooves are arranged on both sides of the upper part of each filter grid.

[0010] A gate is arranged at the reserved hole between the water distribution channel and the backwashing water discharge well.

[0011] The bottom surface of the wastewater pool has a slope of 5%, and a stirrer is arranged in the wastewater pool.

[0012] A drainage ditch is arranged at the bottom of the filter pool water outlet pipe gallery, and the slope of the drainage ditch is 1%.

[0013] A light panel is installed at the top of the filter pool water outlet pipe gallery, an electric hoist is installed at the upper part of the filter pool water outlet pipe gallery, and a patrol platform is arranged above the filter pool water outlet pipe at the lower part of the filter pool water outlet pipe gallery.

[0014] The defluorination filter material layer is composed of net boxes spliced together side by side, and the net boxes are filled with defluorination filter material particles.

[0015] The supporting layer is composed of pebbles with a particle size of 3-23 mm.

[0016] Fluorine-containing sewage removes fluorine by filter material adsorption in the defluorination filter material layer, and backwashing and filter material regeneration are performed when filter clogging and filter material adsorption saturation occur during the operation of the filter.

[0017] The utility model discloses a sewage anti-clogging high-efficiency defluorination filter pool which can significantly enhance the defluorination effect and optimize the water quality by optimizing the pool type structure, improving the water distribution mode of the filter pool, optimizing the filter material type and specification, and strengthening the backwashing function of the filter pool. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the structure diagram of the sewage anti-clogging high-efficiency defluorination filter pool.

[0019] Figure 2 is Figure 1 the A-A sectional view.

[0020] Figure 3 is Figure 1 the D-D sectional view.

[0021] In the drawings: 1. water inlet well; 2. water distribution channel; 3. backwashing water discharge well; 4. filter pool; 5. backwashing water outlet pipe gallery; 6. filter pool water outlet pipe gallery; 7. wastewater pool; 8. clean water pool; 9. water inlet gate; 10. defluorination filter material layer; 11. supporting layer; 12. filter brick; 13. U-shaped water distribution tank, 14. weir plate; 15. blowdown valve; 16. water outlet valve; 17. backwashing water inlet valve; 18. light panel; 19. electric hoist; 20. patrol platform; 21. pneumatic gate; 22. stirrer; 23. drainage ditch; 24. reserved hole; 25. backwashing drainage pipe; 26. filter pool water outlet pipe; 27. backwashing water inlet pipe. DETAILED DESCRIPTION

[0022] AsFigure 1 and Figure 2 As shown in the utility model discloses a sewage anti -block high -efficient defluorination filter, including water well 1, water distribution channel 2, backwash water discharge well 3, filter, backwash effluent pipe gallery 5, filter effluent pipe gallery 6, waste water tank 7, clean water tank 8. Water well 1 with water distribution channel 2 is communicated by the reserved hole 24, and the water inlet at the bottom of water well 1 is provided with water inlet gate 9. The filter is divided into multiple filter grids 4, and each filter grid has U-shaped water distribution groove 13 on both sides of the upper portion, and the top of the water distribution groove 13 is provided with a height-adjustable stainless steel weir plate 14 (see Figure 2 ) The reserved hole is provided between water distribution channel 2 and backwash water discharge well 3 and between backwash water discharge well 3 and filter grid 4, and a pneumatic gate 21 is arranged at the reserved hole between water distribution channel 2 and backwash water discharge well 3.

[0023] As shown in Figure 2 , the water inlet side of the filter is provided with a backwash effluent pipe gallery 5, and the water outlet side of the filter is provided with a filter effluent pipe gallery 6. The backwash effluent pipe gallery 5 is provided with a backwash drain pipe 25, and the two ends of the backwash drain pipe 25 are communicated with the backwash water discharge well 3 and the waste water tank 7 respectively. The backwash drain pipe 25 is provided with a blow-off valve 15. The slope of the bottom surface of the waste water tank 7 is 5%, and the waste water tank 7 is provided with a stirrer 22. The filter effluent pipe gallery 6 is provided with a filter effluent pipe 26, one end of which is connected to the bottom of the filter grid 4, and the other end is connected to a tee joint. Among the other two interfaces of the tee joint, one is connected to a backwash inlet pipe 27 through a backwash inlet valve 17, and the backwash inlet pipe 27 is connected to the clean water tank 8 through a backwash water pump. The other one is connected to the clean water tank 8 through an outlet valve 16.

[0024] As shown in Figure 1 , the bottom of the filter effluent pipe gallery 6 is provided with a drainage ditch 23, and the slope of the drainage ditch 23 is 1%. As shown in Figure 2 , a light panel 18 is installed on the top of the filter effluent pipe gallery 6, an electric hoist 19 is installed on the upper part of the filter effluent pipe gallery 6, and a patrol platform 20 is arranged above the filter effluent pipe 26 on the lower part of the filter effluent pipe gallery 6. The electric hoist 19 is used for lifting and transporting when installing or maintaining the pipeline facilities in the filter effluent pipe gallery 6.

[0025] As shown in Figure 3 , the filter 4 is sequentially provided with a defluorination filter material layer 10, a supporting layer 11 and filter bricks 12 from top to bottom. The defluorination filter material layer 10 is composed of net boxes spliced together side by side, the net boxes are filled with defluorination filter material particles, and the diameter of the defluorination filter material particles is 3±0.2mm. The supporting layer 11 is composed of pebbles (particle size 3-23mm). The filter bricks 12 adopt an HDPE material shell, are filled with C25 concrete inside, are connected into a whole through mortise and tenon joints, can effectively disperse backwash water into the filter, can ensure that the operating conditions of each region inside the filter are consistent, and can improve the operating effect.

[0026] The specific process of the filter tank for removing fluorine from sewage is as follows.

[0027] (1) Filtration and adsorption of sewage

[0028] The inlet gate 9 and the pneumatic gate 21 are opened, the backwashing inlet valve 17 and the sewage valve 15 are closed. The sewage flowing into the inlet well 1 passes through the water distribution channel 2 and the backwashing water discharge well 3 in sequence through the reserved hole, enters the U-shaped water distribution groove 13 at the upper part of each filter grid 4, overflows from the U-shaped water distribution groove 13 into the filter grid 4, and passes through the fluoride removal filter material layer 10, the supporting layer 11 and the filter brick 12 in sequence from top to bottom. The fluoride removal filter material layer 10 adsorbs fluoride, and then passes through the supporting layer 11 and the filter brick 12. The outlet valve 16 is opened, and the filtered sewage flows to the clear water tank 8 through the filter tank outlet pipe 26.

[0029] (2) Backwashing of filter layer

[0030] After a period of operation, the filter tank may be clogged and needs to be backwashed.

[0031] The outlet valve 16 and the pneumatic gate 10 are closed, and the sewage valve 15 and the backwashing inlet valve 17 are opened. The backwashing water pump is started to pump water from the clear water tank 8 into each filter grid 4 for flushing through the backwashing inlet pipe 27. The backwashing water flows upwards in the filter grid 4, flushing out the impurities in the filter brick 12, the supporting layer 11 and the fluoride removal filter material layer 10 from bottom to top, and then flows into the backwashing water discharge well 3 through the U-shaped water distribution groove 13 at the upper part of each filter grid 4, and then flows to the waste water tank 7 through the backwashing drain pipe 25.

[0032] (3) Regeneration of fluoride removal particles

[0033] After the particles are saturated, they need to be regenerated. When regenerating, the fluoride removal particle net box is lifted out, soaked in a regeneration liquid, and then lifted back to the original position.

Claims

1. A sewage anti-clogging high-efficiency fluorine removal filter tank, characterized in that, The filter tank is divided into filter grids, both sides of the upper part of each filter grid is provided with a water distribution groove, and a backwashing water discharge well is arranged between each filter grid and the water distribution groove, and a reserved hole is arranged between the water distribution groove and the backwashing water discharge well and between the backwashing water discharge well and the filter grid.

2. The sewage anti-blocking high-efficiency fluorine removal filter tank according to claim 1, characterized in that, The water inlet of the bottom of the water inlet well is provided with a water inlet gate.

3. The sewage anti-clogging high-efficiency fluorine removal filter tank according to claim 1, characterized in that, The filter tank is divided into filter grids, both sides of the upper part of each filter grid is provided with a water distribution groove, and a backwashing water discharge well is arranged between each filter grid and the water distribution groove, and a reserved hole is arranged between the water distribution groove and the backwashing water discharge well and between the backwashing water discharge well and the filter grid.

4. The sewage anti-clogging high-efficiency fluorine removal filter tank according to claim 1, characterized in that, A gate is arranged at the reserved hole between the water distribution groove and the backwashing water discharge well.

5. The sewage anti-clogging high-efficiency fluorine removal filter tank according to claim 1, characterized in that, The bottom surface of the wastewater tank has a slope of 5%, and a stirrer is arranged in the wastewater tank.

6. The sewage anti-clogging high-efficiency fluorine removal filter tank according to claim 1, characterized in that, The bottom of the filter tank outlet pipe gallery is provided with a drainage ditch, and the slope of the drainage ditch is 1%.

7. The sewage anti-clogging high-efficiency fluorine removal filter tank according to claim 1, characterized in that, The top of the filter tank outlet pipe gallery is provided with a light panel, an electric hoist is arranged on the upper part of the filter tank outlet pipe gallery, and a patrol platform is arranged above the filter tank outlet pipe on the lower part of the filter tank outlet pipe gallery.

8. The sewage anti-clogging high-efficiency fluorine removal filter tank according to claim 1, characterized in that, The defluorination filter layer is composed of net cages spliced together side by side, and the net cages are filled with defluorination filter particles with a particle size of 3±0.2 mm.

9. The sewage anti-clogging high-efficiency fluorine removal filter tank according to claim 1, characterized in that, The supporting layer is composed of pebbles with a particle size of 3-23 mm.

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