CN211847629U - High-efficient clean system of domestic sewage - Google Patents

Abstract

The utility model discloses a high-efficient clean system of domestic sewage, including the catch basin that sets gradually side by side and communicate, the electrolytic bath, the anaerobism pond and hold back the pond, the catch basin lower part is provided with the inlet tube, the catch basin middle part is provided with filter equipment, from the top down has set gradually the carbon residue layer in the electrolytic bath, first soil horizon and steel wire stratum reticulare, from the top down has set gradually the second soil horizon in holding back the pond, hold back layer and quartz sand layer, the catch basin, the electrolytic bath, the anaerobism pond sets up with holding back water inlet and outlet from top to bottom alternately between the pond, it is provided with the drain pipe to hold back the pond lower part. The purification system has the advantages of good purification effect and high nitrogen and phosphorus element removal efficiency.

Description

High-efficient clean system of domestic sewage

Technical Field

The invention belongs to the technical field of domestic sewage purification, and particularly relates to a domestic sewage efficient purification system.

Background

With the national emphasis on point-source pollution caused by industrial sewage discharge, agricultural sewage pollution and rural domestic sewage pollution have gradually become the main sources of river water eutrophication. The nitrogen and phosphorus content of the water body is higher, which causes massive growth of algae and death of a large amount of aquatic plants and fishes. The rural domestic sewage is sewage generated by washing, bathing, kitchen cooking, excrement and urine, flushing and the like in households in villages and towns. Rural domestic sewage has the characteristics of wide spread, multiple sources, quick growth, complex sewage components and large change of water quality and water quantity, is difficult to collect and manage, and causes a plurality of ecological environment problems. Therefore, the strengthening of the collection, treatment and resource utilization of the rural domestic sewage is an irreparable task in building new socialist rural areas.

At present, a plurality of domestic sewage purification devices are provided, and a common purification device can effectively remove COD, BOD, SS and the like in sewage to meet the standard requirements, but the removal efficiency of the existing device is lower for total nitrogen and total phosphorus, and the total nitrogen and total phosphorus content in the purified water body cannot meet the national standard requirements.

SUMMERY OF THE UTILITY MODEL

Not enough to the aforesaid, the utility model provides a high-efficient clean system of domestic sewage, the nitrogen phosphorus that this system can effectively solve current clean system existence gets rid of the problem of inefficiency.

In order to achieve the above object, the present invention provides a technical solution for solving the technical problem:

the utility model provides a domestic sewage's high-efficient clean system, including the catch basin that sets up side by side, the electrolytic bath, the anaerobism pond with hold back the pond, the catch basin lower part is provided with the inlet tube, the catch basin middle part is provided with filter equipment, from the top down has set gradually the carbon residue layer in the electrolytic bath, first soil horizon and wire net layer, from the top down has set gradually the second soil horizon in holding back the pond, hold back layer and quartz sand layer, the catch basin, the electrolytic bath, the anaerobism pond sets up with holding back water inlet and outlet from top to bottom alternately between the pond, it is provided with the drain pipe to hold back the pond lower.

The beneficial effects produced by adopting the scheme are as follows: the collecting tank, the electrolytic tank, the anaerobic tank and the interception tank are sequentially communicated, the upper part of the collecting tank is communicated with the electrolytic tank through a first pipe body, the lower part of the electrolytic tank is communicated with the lower part of the anaerobic tank through a second pipe body, the upper part of the anaerobic tank is communicated with the upper part of the interception tank through a third pipe body, when in use, pretreated domestic sewage is discharged into the collecting tank, large-particle pollutants in the sewage are intercepted after passing through the filtering device, the primarily filtered sewage enters the electrolytic tank and passes through the carbon slag layer first, carbon elements in the carbon slag layer continuously flow downwards to pass through the first soil layer and the steel wire mesh layer, when the sewage is contacted with the steel wire mesh layer in the steel wire mesh layer, the carbon elements and iron elements in the steel wire mesh layer generate iron-carbon micro-electrolysis action, so that 1.2v potential difference is formed among the carbon slag layer, the first soil layer and the steel wire mesh layer, and pollutants in the sewage are electrolyzed by the iron-carbon micro-, the purpose of degrading pollutants is achieved; the sewage after the electrolysis gets into in the anaerobism pond, under anaerobic condition, reduces the nitrate nitrogen element in the sewage into nitrogen gas, and the loss realizes getting rid of nitrogen element's purpose in the atmosphere, and at last, sewage gets into and holds back the pond, under the effect of holding back the layer, holds back most nitrogen phosphorus element in the sewage, again under interception, the adsorption of quartz sand, further adsorbs nitrogen phosphorus element in the sewage for nitrogen phosphorus element content accords with national sewage discharge standard in the final discharged water body.

Further, the filter device is arranged in an inverted V shape.

The beneficial effects produced by adopting the scheme are as follows: the filter column device is arranged into an inverted V shape, so that the filter area can be increased, and the filter effect and the filter efficiency are improved.

Furthermore, a quartz sand layer is arranged in the electrolytic cell and arranged on the lower portion of the steel wire mesh layer.

The beneficial effects produced by adopting the scheme are as follows: the sewage after iron-carbon micro-electrolysis passes through the quartz sand, and is further filtered through the interception and adsorption action of the quartz sand, so that the content of organic pollutants in the sewage is reduced.

Further, a first soil layer is arranged on the uppermost part of the electrolytic cell.

The beneficial effects produced by adopting the scheme are as follows: the topmost layer is provided with first soil horizon, and the thickness on first soil horizon is at 15-30 centimetres for plant aquatic plant, earlier through aquatic plant to the nitrogen phosphorus element in the sewage absorb, carry out subsequent filtering action again, through multistage filtering action of getting rid of, and then improve nitrogen phosphorus's the effect of getting rid of.

Further, an anaerobic activated granular sludge layer is arranged in the anaerobic tank.

The beneficial effects produced by adopting the scheme are as follows: the anaerobic activated granular sludge layer is arranged, so that the denitrification effect in the sewage can be accelerated under the action of facultative anaerobes in the activated granules, the denitrification time is prolonged, and the purification efficiency of the sewage is improved.

Furthermore, the interception layer comprises an anhydration sludge layer and a bentonite layer which are alternately arranged, and the anhydration sludge layer and the bentonite layer are respectively provided with two layers.

The beneficial effects produced by adopting the scheme are as follows: when a sewage treatment plant treats sewage, a large amount of flocculating agent is generally added into the sewage to generate a large amount of sludge under the flocculation action of the flocculating agent, the dried sludge is changed into the dried sludge by drying the sludge, the water content in the dried sludge is generally 60 to 70 percent, and the dried sludge contains a large amount of effective flocculation components, after the sewage enters the dried sludge layer, the dried sludge layer highly intercepts the residual nitrogen and phosphorus elements in the sewage through the action mechanisms of a compressed double electric layer, an adsorption electric neutralization action, an adsorption bridging action and the like, after the sewage continues to enter the bentonite layer, the pollutants of nitrogen and phosphorus and the like in the sewage are further intercepted under the adsorption action of the bentonite, the removal efficiency of nitrogen and phosphorus elements in the sewage can be greatly improved by alternately arranging the dried sludge layer and the bentonite layer; the thickness of the interception layer is within 20-40 cm, nitrogen and phosphorus elements absorbed in the interception layer with the thickness can be fully absorbed by plants, and the nitrogen and phosphorus removal effect is improved.

Furthermore, aquatic plants are planted in the second soil layer, and the aquatic plants are allium mongolicum regel, reed, juncus effuses or canna indica.

The beneficial effects produced by adopting the scheme are as follows: the thickness of the second soil layer is generally 15-20 cm, after the aquatic plants are planted in the second soil layer, the roots of the plants go deep into the interception layer, a large amount of nitrogen and phosphorus elements adsorbed in the interception layer are effectively absorbed for self growth and development, and the purpose of reducing nitrogen and phosphorus in sewage is achieved by periodically harvesting the plants.

Further, the filter device is a polyester fiber filter screen, and the polyester fiber filter screen is at least provided with 3 layers.

The beneficial effects produced by adopting the scheme are as follows: the edge of polyester fiber filter screen is provided with the frame, and the polyester fiber filter screen passes through the frame to be connected with the lateral wall of catch basin, is provided with multilayer polyester fiber filter screen, can effectively filter the great particulate matter in the sewage in reaching the pond, avoids the large particulate matter to flow into subsequent electrolytic bath and hold back the interior back with the filter layer jam, improves the life of each filter layer in electrolytic bath and the holding back pond.

To sum up, the utility model has the advantages of it is following:

1. be provided with the electrolytic bath in this system, the anaerobism pond with hold back the pond, organic pollutant through the little electrolysis of iron carbon in the electrolytic bath carries out the electrolysis with sewage in earlier, get rid of partly organic pollutant, the rethread anaerobism pond makes the nitrate nitrogen in the sewage take place the denitrification, make the nitrate nitrogen reduction in the sewage be the nitrogen gas loss, hold back the layer through holding back in holding back the pond at last and hold back remaining a large amount of nitrogen phosphorus element in the sewage, and through the absorbing action of aquatic plant, realize the purpose that nitrogen phosphorus got rid of, through this system, make domestic sewage obtain the purification of degree of depth, accord with the sewage discharge standard of country.

2. The lowest layer of the electrolytic cell is provided with the quartz sand layer, so that pollutants in the sewage can be further filtered through the interception and adsorption effects of the quartz sand, the filtering strength of a subsequent purification and filtering layer is reduced, and the filtering effect is improved.

Drawings

FIG. 1 is a schematic diagram of the system;

FIG. 2 is a schematic cross-sectional structure of a rejection layer;

wherein, 1, collecting tank; 2. an electrolytic cell; 3. an anaerobic tank; 4. an interception pool; 5. a water inlet pipe; 6. a filtration device; 7. a carbon slag layer; 8. a first soil layer; 9. a steel wire mesh layer; 10. a second soil layer; 11. a trapping layer; 12. a quartz sand layer; 13. a drain pipe; 14. drying the sludge blanket; 15. a bentonite layer; 16. anaerobic activated granular sludge blanket.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

In one embodiment of the present invention, as shown in fig. 1-2, a high-efficiency purification system for domestic sewage is provided, which comprises a collecting tank 1, an electrolytic tank 2, an anaerobic tank 3 and a retaining tank 4 arranged side by side, wherein the lower part of the collecting tank 1 is provided with an inlet pipe 5, the middle part of the collecting tank 1 is provided with a filtering device 6, and optimally, the filtering device 6 is arranged in an inverted V shape. Preferably, the filtering device 6 is a polyester fiber filtering net, and the polyester fiber filtering net is at least provided with 3 layers.

The electrolytic cell 2 is internally provided with a carbon slag layer 7, a first soil layer 8 and a steel wire mesh layer 9 from top to bottom in sequence, and optimally, the electrolytic cell 2 is internally provided with a quartz sand layer 12, and the quartz sand layer 12 is arranged on the lower part of the steel wire mesh layer 9. Preferably, the uppermost part of the cell 2 is also provided with a first soil layer 8. Optimally, an anaerobic activated granular sludge blanket 16 is arranged in the anaerobic tank 3.

A second soil layer 10, an interception layer 11 and a quartz sand layer 12 are sequentially arranged in the interception tank 4 from top to bottom, optimally, the interception layer 11 comprises a dried sludge layer 14 and a bentonite layer 15 which are alternately arranged, and the dried sludge layer 14 and the bentonite layer 15 are respectively provided with two layers. In the optimized land, the aquatic plants are planted in the second soil layer 10, and the aquatic plants are allium mongolicum regel, reed, juncus effuses or canna indica.

The water inlet and the water outlet among the water collecting tank 1, the electrolytic tank 2, the anaerobic tank 3 and the interception tank 4 are alternately arranged up and down, and the lower part of the interception tank 4 is provided with a drain pipe 13.

The use process of the system is as follows:

discharging pretreated domestic sewage into a water collecting tank 1, intercepting large-particle pollutants in the sewage after the sewage passes through a filtering device 6, enabling the primarily filtered sewage to enter an electrolytic tank 2, firstly passing through a carbon slag layer 7, carrying carbon elements in the carbon slag layer 7 to continuously flow downwards to pass through a first soil layer 8 and a steel wire mesh layer 9, and when the sewage is contacted with a steel wire mesh in the steel wire mesh layer 9, carrying the carbon elements with iron elements in the steel wire mesh layer to generate iron-carbon micro-electrolysis action so as to enable a 1.2v potential difference to be formed among the carbon slag layer 7, the first soil layer 8 and the steel wire mesh layer 9, and carrying out electrolytic treatment on the pollutants in the sewage by using the iron-carbon micro-electrolysis action so as to achieve the purpose of degrading the pollutants; in the sewage entering anaerobism pond 3 after the electrolysis, under the anaerobic condition, reduce the nitrate nitrogen element in the sewage into nitrogen gas, the loss is to the atmosphere, realize getting rid of the purpose of nitrogen element, and at last, sewage gets into and holds back in the pond 4, under the effect of holding back layer 11, holds back most nitrogen phosphorus element in the sewage, again under interception, the adsorption of quartz sand layer 12, further adsorbs nitrogen phosphorus element in the sewage for compound national sewage discharge standard of nitrogen phosphorus element content in the final discharged water body.

While the present invention has been described in detail and with reference to the accompanying drawings, it is not to be considered as limited to the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.

Claims (8)

1. The utility model provides a high-efficient clean system of domestic sewage, its characterized in that, includes catch basin (1), electrolytic bath (2), anaerobism pond (3) and the holding back pond (4) that set gradually side by side and communicate, catch basin (1) lower part is provided with inlet tube (5), catch basin (1) middle part is provided with filter equipment (6), from the top down has set gradually carbon residue layer (7), first soil horizon (8) and wire stratum reticulare (9) in electrolytic bath (2), from the top down has set gradually second soil horizon (10), holds back layer (11) and quartz sand layer (12) in holding back pond (4), water inlet and outlet from top to bottom alternate setting between catch basin (1), electrolytic bath (2), anaerobism pond (3) and the holding back pond (4), it is provided with drain pipe (13) to hold back pond (4) lower part.

2. The high-efficiency domestic sewage purification system according to claim 1, wherein said filtering means (6) is provided in an inverted V-shape.

3. The efficient domestic sewage purification system of claim 1, wherein the electrolytic cell (2) is further provided with the quartz sand layer (12), and the quartz sand layer (12) is arranged at the lower part of the steel wire mesh layer (9).

4. The efficient domestic sewage purification system according to claim 3, wherein said first soil layer (8) is further provided on the uppermost portion of said electrolytic cell (2).

5. The efficient domestic sewage purification system of claim 1, wherein an anaerobic activated granular sludge blanket (16) is disposed within the anaerobic tank (3).

6. The domestic sewage high-efficiency purification system according to claim 1, wherein the retention layer (11) comprises an anhydration sludge layer (14) and a bentonite layer (15) which are alternately arranged, and the anhydration sludge layer (14) and the bentonite layer (15) are respectively provided with two layers.

7. The efficient domestic sewage purification system of claim 6, wherein the second soil layer (10) is planted with aquatic plants, and the aquatic plants are Scirpus tabernaemontani, bulrush, rush or canna.

8. The efficient domestic sewage purification system of claim 1, wherein the filtration device (6) is a polyester fiber filter screen, and the polyester fiber filter screen is provided with at least 3 layers.

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