Micro-flocculation deep-bed filtration domestic sewage treatment device

Abstract

The utility model discloses a micro-flocculation deep-bed filtration domestic sewage treatment device which comprises a shell, a micro-flocculation reaction area and a deep-bed filtration area are sequentially arranged in the shell from top to bottom, a water inlet pipe connected to the micro-flocculation reaction area is arranged at the upper end of the shell, and a water outlet pipe connected to the deep-bed filtration area is arranged at the lower end of the shell. A water outlet pipe connected to the bottom of the deep bed filtering area is arranged at the lower end of the shell; a stirring device is arranged in the micro-flocculation reaction area, and a medicament adding box is arranged outside the shell; the deep bed filter area is internally provided with filter bricks, the filter bricks are positioned at the bottom of the shell, a filter material layer is laid above the filter bricks, and the filter bricks are internally provided with upward backwashing assemblies. According to the utility model, sewage firstly passes through the micro-flocculation reaction area to improve the pollutant coagulation effect, and then passes through the deep-bed filtering area to be filtered more finely, so that the sewage filtering period is prolonged, and the backwashing frequency is reduced; not only can the occupied area be reduced, but also energy consumption and maintenance cost can be saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment field especially relates to a kind of microflocculation deep bed filtration domestic sewage treatment device. BACKGROUND

[0002] The existing deep bed filter when treating domestic sewage, domestic sewage is usually directly delivered to filter tank, because domestic sewage contains flocculating material, flocculating material is easily trapped in filter material in filter tank, and then covers the surface of filter head, causing filter head to be blocked, affecting filtration effect;Therefore, frequent backwashing is needed to reduce filter head blockage, which is easy to cause high energy consumption.And although the existing sedimentation tank can treat flocculating material, the flocculation efficiency is low, the removal effect of small suspended solids is poor, and the land area is large. SUMMARY

[0003] The utility model aims at providing a kind of microflocculation deep bed filtration domestic sewage treatment device, to solve the problem of poor flocculation effect in the existing domestic sewage treatment device, filter head is easily blocked, poor sewage treatment effect, low efficiency.

[0004] To achieve the above-mentioned utility model purposes, the technical scheme of the utility model is:

[0005] A kind of microflocculation deep bed filtration domestic sewage treatment device, including shell, the shell is sequentially provided with microflocculation reaction zone and deep bed filtration zone from top to bottom, the upper end of the shell is provided with the water inlet pipe connected to microflocculation reaction zone, the lower end of shell is provided with the water outlet pipe connected to the bottom of deep bed filtration zone;Stirring device is provided in the microflocculation reaction zone, reagent dosing box is provided outside the shell;Deep bed filtration zone is provided with filter brick, filter brick is located at the bottom of shell, filter brick is provided with filter material layer above, upward backwashing assembly is provided in filter brick.Domestic sewage first enters microflocculation reaction zone to improve the pollutant coagulation effect, and then small dirt is filtered through deep bed filtration zone, prolongs the sewage filtration cycle, reduces backwashing frequency;Not only can reduce land area, but also can save energy consumption, maintenance cost;Stirring device is set, not only can the reagent and domestic sewage in microflocculation reaction zone be fully mixed, further improve flocculation effect and efficiency.

[0006] As preferred, the stirring device comprises a motor, a first stirring shaft, a driven mechanism and a plurality of second stirring shafts; the motor is vertically arranged above the shell and located at the center of the shell, the upper end of the first stirring shaft is fixedly connected with the rotor of the motor, the lower end is inserted into the bottom of the micro-flocculation zone, the plurality of second stirring shafts are inserted into the upper part of the micro-flocculation zone, and the motor is connected with the second stirring shafts through the driven mechanism. The first stirring shaft can stir the bottom of the micro-flocculation zone, and the second stirring shafts can stir the upper part of the micro-flocculation zone, so that different areas in the sewage are stirred, the stirring and mixing area is increased, the flocculating agent and the domestic sewage in the micro-flocculation zone are fully mixed, and the flocculation effect and efficiency are improved.

[0007] As preferred, a box is fixedly arranged in the micro-flocculation zone, the lower end of the first stirring shaft penetrates into the box, a driving bevel gear is arranged on the first stirring shaft in the box, and a driven bevel gear meshing with the driving bevel gear is arranged in the box, a third stirring shaft penetrating through the box is horizontally arranged in the micro-flocculation zone, the driven bevel gear is fixedly arranged on the third stirring shaft, and helical blades are arranged on the third stirring shaft. The first stirring shaft and the second stirring shaft are longitudinally stirred to form up-down circulation and reduce dead angles, and the third stirring shaft is transversely stirred to horizontally push the sewage to circulate; the combination of the two can make the sewage and the flocculating agent more uniformly and comprehensively mixed, and improve the flocculation effect.

[0008] As preferred, a liquid inlet pump is communicated with the agent adding box, a liquid inlet pipe is arranged on the liquid inlet pump, a rotary joint is arranged on the upper end of each second stirring shaft, and the rotary joint away from the second stirring shaft is respectively communicated with the liquid inlet pipe. The flocculating agent enters the flocculation reaction zone from the second stirring shaft, is stirred and added at the same time, is easily diffused, and the mixing efficiency is increased.

[0009] As preferred, a stirring frame is communicated with the lower end of the second stirring shaft, and a plurality of small holes are arranged on the side wall of the stirring frame. The stirring frame increases the contact area of the second stirring shaft with the sewage, greatly disturbs the sewage, improves the flowability of the sewage, increases the mixing flow rate, and further enhances the mixing efficiency; the small holes can uniformly scatter the flocculating agent into the sewage, and facilitate mixing.

[0010] As preferred, the driven mechanism comprises a driving pulley, a plurality of driven pulleys and an annular belt, the driving pulley is fixedly arranged on the first stirring shaft, the driven pulleys are respectively fixedly arranged on the second stirring shafts, and the annular belt is wrapped around the driving pulley and each driven pulley.

[0011] As preferred, a filter screen plate is arranged above the filter material layer, a sludge discharge pipe is arranged on the filter screen plate, and a sludge discharge pump is communicated with one end of the sludge discharge pipe penetrating out of the shell. The filter screen plate can separate the flocculating material from the filter material layer to prevent the flocculating material from blocking the filter material; the sludge discharge pump and the sludge discharge pipe can discharge the flocculating material at any time to reduce the blockage of the filter screen plate and improve the sewage treatment efficiency.

[0012] Preferably, the filter layer is a multi-layer staggered arrangement structure, the upper layer is a zeolite filter material, and the lower layer is a ceramic filter material.

[0013] The utility model discloses the beneficial effect is:

[0014] 1, the utility model discloses a microflocculation and biological filtration are integrated, domestic sewage first enters the microflocculation reaction area to improve the pollutant condensation effect, then carries out the filtration to small dirt through the deep bed filtration area, prolongs the sewage filtration period, reduces the backwashing frequency, can not only reduce the floor space, but also can save the energy consumption, maintenance cost, and setting stirring device can fully mix reagent and domestic sewage in the microflocculation reaction area, further improve flocculation effect and efficiency.

[0015] 2, the utility model discloses a first stirring shaft can stir the bottom of microflocculation area, and the second stirring shaft can stir the upper portion of microflocculation area, and then stir different areas in the sewage, increase the stirring mixing area, and the first stirring shaft and the second stirring shaft longitudinal stirring form up and down circulation, reduce the dead angle, and the third stirring shaft transverse stirring, horizontal direction pushes the sewage circulation, common effect makes that flocculation reagent and domestic sewage are fully, evenly mixed, further improve flocculation effect and efficiency.

[0016] 3, the utility model discloses setting filter screen, sludge pump and sludge pipe, and the filter screen can separate flocculation and filter layer, prevent flocculation and block filter material, and the sludge pump and sludge pipe can discharge flocculation at any time, reduce filter screen blockage, improve the sewage treatment efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structural schematic diagram of the utility model.

[0018] In the drawing:

[0019] 1, the shell, 11, the water inlet pipe, 12, the water outlet pipe, 2, the microflocculation reaction area, 3, the deep bed filtration area, 31, the zeolite filter material, 32, the ceramic filter material, 33, the filter brick, 4, the stirring device, 41, the motor, 42, the first stirring shaft, 43, the second stirring shaft, 431, the stirring frame, 432, the small hole, 44, the third stirring shaft, 441, the spiral blade, 5, the driven mechanism, 51, the driving pulley, 52, the driven pulley, 53, the annular belt, 6, the box, 61, the driving bevel gear, 62, the driven bevel gear, 7, the reagent adding box, 71, the liquid inlet pump, 72, the liquid inlet pipe, 73, the rotary joint, 8, the filter screen, 9, the sludge pump, 91, the sludge pipe, 10, the backwashing assembly. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0021] The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] Example 1

[0023] like Figure 1 As shown, a micro-flocculation deep bed filtration domestic sewage treatment device includes a shell 1. Inside the shell 1, from top to bottom, a micro-flocculation reaction zone 2, a filter screen plate 8, and a deep bed filtration zone 3 are arranged sequentially. The upper end of the shell 1 is provided with an inlet pipe 11 connected to the micro-flocculation reaction zone 2, and the lower end of the shell 1 is provided with an outlet pipe 12 connected to the bottom of the deep bed filtration zone 3. A sludge discharge pipe 91 is provided on the filter screen plate 8, and one end of the sludge discharge pipe 91 extends out of the shell 1 and is connected to a sludge discharge pump 9.

[0024] like Figure 1 As shown, a stirring device 4 is provided in the micro-flocculation reaction zone 2. Specifically, the stirring device 4 includes a motor 41, a first stirring shaft 42, a driven mechanism 5, and several second stirring shafts 43. The motor 41 is vertically arranged above the housing 1 and located at the center of the housing 1. A box 6 is fixedly connected below the micro-flocculation reaction zone 2. A driving bevel gear 61 and a driven bevel gear 62 meshing with the driving bevel gear 61 are provided in the box 6. A third stirring shaft 44 is horizontally passed through the box 6. The upper end of the first stirring shaft 42 is fixedly connected to the rotor of the motor 41, and the lower end passes into the box 6. The driving bevel gear 61 is fixed on the first stirring shaft 42, and the driven bevel gear 62 is fixed on the third stirring shaft 44. A spiral blade 441 is provided on the third stirring shaft 44. The motor 41 is connected to the second stirring shaft 43 via a driven mechanism 5. The driven mechanism 5 includes a driving pulley 51 fixed on the first stirring shaft 42, driven pulleys 52 fixed on each of the second stirring shafts 43, and an annular belt 53 covering the driving pulley 51 and each driven pulley 52. ​​Several second stirring shafts 43 are vertically inserted into the upper part of the micro-flocculation zone. The lower end of the second stirring shaft 43 is connected to a stirring frame 431. Small holes 432 are evenly distributed on the side wall of the stirring frame 431.

[0025] like Figure 1 As shown, a reagent dosing tank 7 is provided outside the shell 1. A liquid inlet pump 71 is connected to the reagent dosing tank 7. A liquid inlet pipe 72 is provided on the liquid inlet pump 71. A rotary joint 73 is provided at the upper end of each second stirring shaft 43. The end of the rotary joint 73 away from the second stirring shaft 43 is connected to the liquid inlet pipe 72.

[0026] like Figure 1As shown, the filter bricks 33 are sequentially arranged from bottom to top in the deep bed filtration zone 3, a filter material layer is laid above the filter bricks 33, and the upward backwashing assembly 10 is arranged in the filter bricks 33; the filter material layer has a thickness of greater than or equal to 1.2 m, and the filter material layer has a multi-layer staggered arrangement structure, the upper layer is zeolite filter material 31, and the lower layer is ceramic filter material 32.

[0027] In summary,

[0028] The domestic sewage enters the micro-flocculation reaction zone 2 from the water inlet pipe 11, the reagent is lifted into the second stirring shaft 43 by the liquid inlet pump 71 and discharged from the small holes 432 of the stirring frame 431, the motor 41 works to drive the first stirring shaft 42 to rotate, the driving bevel gear 61 and the driven bevel gear 62 at the lower end of the first stirring shaft 42 drive the third stirring shaft 44 to stir the sewage horizontally, the driving pulley 51, the annular belt 53 and the driven pulley 52 on the first stirring shaft 42 drive the second stirring shafts 43 to rotate to stir the sewage longitudinally, so that each area in the micro-flocculation reaction zone 2 is stirred and mixed to improve the flocculation effect, and the flocculation in the micro-flocculation reaction zone 2 is deposited on the filter screen plate 8, the sludge pump 9 is started to discharge the flocculation through the sludge pump 9.

[0029] The flocculated sewage is filtered from the zeolite filter material 31, the ceramic filter material 32 and the filter bricks 33 in sequence and discharged from the water outlet pipe 12, and after a period of time, the zeolite filter material 31 and the ceramic filter material 32 are backwashed by the backwashing assembly 10 to reduce the blockage.

[0030] The described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

Claims

1. A domestic sewage treatment device by micro-flocculation deep bed filtration, comprising a shell, characterized in that, a micro-flocculation reaction zone and a deep bed filtration zone are sequentially arranged in the shell from top to bottom, a water inlet pipe connected to the micro-flocculation reaction zone is arranged at the upper end of the shell, and a water outlet pipe connected to the bottom of the deep bed filtration zone is arranged at the lower end of the shell; a stirring device is arranged in the micro-flocculation reaction zone, and a medicament adding box is arranged outside the shell; a filter brick is arranged in the deep bed filtration zone, the filter brick is located at the bottom of the shell, a filter material layer is arranged above the filter brick, and an upward backwashing assembly is arranged in the filter brick.

2. The micro-flocculation deep-bed filtration domestic sewage treatment device according to claim 1, characterized in that, The stirring device comprises a motor, a first stirring shaft, a driven mechanism and a plurality of second stirring shafts; the motor is vertically arranged above the shell and located at the center of the shell, the upper end of the first stirring shaft is fixedly connected with the rotor of the motor, the lower end is inserted into the bottom of the micro-flocculation zone, and the plurality of second stirring shafts are inserted into the upper part of the micro-flocculation zone; the motor is connected with the second stirring shafts through the driven mechanism.

3. The micro-flocculation deep-bed filtration domestic sewage treatment device according to claim 2, characterized in that, A box is fixedly arranged in the micro-flocculation zone, the lower end of the first stirring shaft penetrates into the box, a driving bevel gear fixed on the first stirring shaft and a driven bevel gear meshing with the driving bevel gear are arranged in the box, a third stirring shaft penetrating through the box is horizontally arranged in the micro-flocculation zone, the driven bevel gear is fixed on the third stirring shaft, and helical blades are arranged on the third stirring shaft.

4. The micro-flocculation deep-bed filtration domestic sewage treatment device according to claim 3, characterized in that, A liquid inlet pump is communicated with the medicament adding box, a liquid inlet pipe is arranged on the liquid inlet pump, the upper end of each second stirring shaft is provided with a rotary joint, and the end of the rotary joint away from the second stirring shaft is respectively communicated with the liquid inlet pipe.

5. The micro-flocculation deep-bed filtration domestic sewage treatment device according to claim 4, characterized in that, A stirring frame is communicated with the lower end of the second stirring shaft, and a plurality of small holes are opened in the side wall of the stirring frame.

6. The micro-flocculating deep-bed filtration domestic sewage treatment device according to claim 2, characterized in that, The driven mechanism comprises a driving pulley, a plurality of driven pulleys and an annular belt, the driving pulley is fixed on the first stirring shaft, the driven pulleys are respectively fixed on the second stirring shafts, and the annular belt is wrapped around the driving pulley and each driven pulley.

7. The micro-flocculating deep-bed filtration domestic sewage treatment device according to claim 1, characterized in that, A filter screen is arranged above the filter material layer, a sludge discharge pipe is arranged on the filter screen, and one end of the sludge discharge pipe penetrates out of the shell and is communicated with a sludge discharge pump.

8. The micro-flocculation deep-bed filtration domestic sewage treatment device according to claim 7, characterized in that, The filter material layer has a multi-layer staggered arrangement structure, the upper layer is zeolite filter material, and the lower layer is ceramic filter material.

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