CN212334920U

CN212334920U - Fully buried domestic sewage purification ecological system

Info

Publication number: CN212334920U
Application number: CN201922440543.6U
Authority: CN
Inventors: 徐德镇; 徐杰; 周艳
Original assignee: Chengdu Tianfu Longzhong Ecological Technology Development Co ltd
Current assignee: Chengdu Tianfu Longzhong Ecological Technology Development Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2021-01-12
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a fully buried domestic sewage purification ecosystem, which comprises a hydrolysis acidification tank, a multistage anaerobic tank, an artificial wetland and a filtering tank, wherein a water collecting layer, a multi-medium ecological filtering layer, a water distribution layer and a breathable matrix layer are arranged in the wetland from bottom to top; the water outlet of the last stage anaerobic tank is communicated with the water distribution pipe, and the outlet of the water collecting pipe is communicated with the filtering tank. The utility model is buried underground, which does not affect the arrangement of normal living and landscape facilities on the earth surface and saves land; the hydrolysis acidification tank decomposes macromolecular organic matters into micromolecular easily degradable organic matters, the anaerobic tank system treats high-concentration organic wastewater, pollutants remained in the wastewater after anaerobic treatment are effectively degraded and removed through large-area buried artificial subsurface wetland, the removal effect on organic pollutants, heavy metals and the like is good, and the hydrolysis acidification tank integrates sewage purification, surface availability, environment greening, waste-to-waste conversion and biogas generation.

Description

Fully buried domestic sewage purification ecological system

Technical Field

The utility model relates to a sewage treatment technical field especially relates to bury formula domestic sewage purification ecosystem entirely.

Background

At present, most domestic water in rural areas and medium and small towns is directly discharged without being treated. In small and medium towns and vast rural areas, a large amount of production waste (sewage) water discharged by animal and plant production (including livestock, poultry, fishery and required feeds) and domestic sewage generated by human activities exist. The sewage is discharged without being treated, and the environment is polluted.

In addition, the water treatment station occupies a large area, and certain towns and unit lands are very short.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bury formula domestic sewage purification ecosystem entirely, can purify domestic sewage, do benefit to the environmental protection, can practice thrift the land used simultaneously.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a fully buried domestic sewage purification ecological system,

the system comprises a hydrolysis acidification tank, an anaerobic tank system, an artificial wetland and a filter tank, wherein the anaerobic tank system comprises a plurality of stages of anaerobic tanks which are connected in series, the artificial wetland comprises at least one wetland block, a water collecting layer, a multi-medium ecological filter layer, a water distribution layer and a breathable matrix layer are arranged in the wetland block from bottom to top, a water collecting pipe is arranged in the water collecting layer, and a water distribution pipe is arranged in the water distribution layer;

the water outlet of the hydrolysis acidification tank is connected with the inlet of the first stage anaerobic tank, the water outlet of the last stage anaerobic tank is communicated with the water distribution pipe of the wetland block, and the outlet of the water collection pipe of the wetland block is communicated with the filter tank.

Further, an air outlet of the anaerobic tank is connected with an air storage tank.

Furthermore, the inlet of the gas storage tank is connected with the inlet of the dehydration device, and the outlet of the dehydration device is connected with the inlet of the desulfurization device.

Furthermore, the bottom of the hydrolysis acidification tank and the bottom of the anaerobic tank are provided with sludge discharge ports which are connected with sludge discharge pipes, and the sludge discharge pipes are communicated with the sludge tank.

Further preferably, the sludge tank is connected with a sewage pipe, and the sewage pipe leads to the inlet of the first-stage anaerobic tank.

Furthermore, a permeable layer is arranged between the water collecting layer and the multi-medium ecological filtering layer, and a permeable layer is arranged between the water distributing layer and the multi-medium ecological filtering layer.

Further, the filtering tank is connected with the water storage tank.

Furthermore, the artificial wetland also comprises two water inlet pipes, a water outlet blind ditch and two rows of wetland blocks, the water outlet blind ditch is arranged between the two rows of wetland blocks, the outer sides of the two rows of wetland blocks are respectively provided with one water inlet pipe, the water collecting pipe of the wetland block is transversely led into the water outlet blind ditch, the water distributing pipe of the wetland block is transversely communicated with the water inlet pipe on the outer side, the water inlet pipe is connected with the water outlet of the last stage anaerobic tank, and the water outlet blind ditch is connected with the filtering tank.

Further preferably, there are 5 columns of wetland blocks per column.

Preferably, the anaerobic tank system has 5 anaerobic tanks.

Compared with the prior art, the utility model discloses following beneficial effect has:

1, the utility model is buried underground, does not affect the arrangement of normal living and landscape facilities on the ground surface, and saves land; the hydrolysis acidification tank decomposes macromolecular organic matters into micromolecular easily-degradable organic matters, and plays a good auxiliary role in subsequent anaerobic biological treatment; the anaerobic tank system treats high-concentration organic wastewater, and pollutants such as COD, BOD, SS and the like remaining in the wastewater after anaerobic treatment are basically degraded and removed by the large-area artificial subsurface flow wetland, so that the sewage purification effect is good;

2, the artificial wetland in the utility model is arranged in a subsurface flow type, is little influenced by climate, has good sanitary condition, can be used as landscape greening land on the ground, has good removal effect on organic pollutants, heavy metals and the like, and integrates sewage purification, environment greening and waste-to-waste biogas generation;

3, the utility model discloses a bury completely, can alleviate the problem that some cities and towns and unit soil are very in short supply.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the constructed wetland;

FIG. 3 is a transverse cross-sectional view of the wetland block;

FIG. 4 is a sectional view in the column direction of the wetland block;

FIG. 5 is a top view of an anaerobic basin system;

fig. 6 is a cross-sectional view of an anaerobic basin system.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the utility model discloses a bury formula domestic sewage entirely and purify ecosystem, including hydrolysis-acidification pool, anaerobism pond system, constructed wetland and filtering ponds, constructed wetland includes an at least wetland piece 1, and the quantity that constructed wetland divided the railway carriage or compartment piece sets up as required.

The constructed wetland in the present embodiment includes two rows of wetland blocks 1, and each row can be set to 5 wetland blocks 1. A water outlet blind ditch 17 is arranged between two rows of wetland blocks 1, and water inlet pipes 16 arranged in the row direction are respectively arranged at the outer sides of the two rows of wetland blocks 1.

As shown in fig. 2, 3 and 4, a water collecting layer 11, a multi-medium ecological filter layer 13, a water distribution layer 14 and a breathable matrix layer 15 are arranged in the wetland block 1 from bottom to top, a water collecting pipe 111 is arranged in the water collecting layer 11, and a water distribution pipe 141 is arranged in the water distribution layer 14; a permeable layer 12 is arranged between the multi-medium ecological filter layer 13 and the water collecting layer 11 and the water distributing layer 14. The branch lines on two sides of the water distribution pipe 141 distribute water uniformly, and the periphery of the branch line is perforated; the branch lines on both sides of the water collecting pipe 111 are perforated around each branch line. The air-permeable matrix layer 15 is filled with a primary medium, and wetland plants such as the ophiopogon japonicus and the grassleaf sweelflag rhizome are planted on the primary medium to form a surface green belt.

The water collecting pipe 111 of the wetland block 1 transversely leads into the water outlet blind ditch 17, and the water distributing pipe 141 of the wetland block 1 transversely communicates with the water inlet pipe 16 at the outer side thereof. The water outlet blind ditch 17 of the artificial wetland is communicated with a filtering tank, and the filtering tank is connected with a reservoir.

As shown in fig. 5 and 6, the anaerobic pond system comprises a plurality of stages of anaerobic ponds 2, the number of the anaerobic ponds 2 is set according to the requirement, and the anaerobic pond system in the embodiment has 5 to 10 anaerobic ponds 2. A pressure regulating tank is arranged between the anaerobic tanks 2.

As shown in figures 1 and 5, 10 anaerobic ponds 2 are connected in series in sequence through communicating pipes. The 10 anaerobic tanks 2 are arranged in two rows, and the connecting pipes between the tanks are DN300 concrete pipes. The water outlet of the hydrolysis acidification tank is connected with the inlet of the first stage anaerobic tank, and the water outlet of the last stage anaerobic tank is connected with the water inlet pipe 16 of the artificial wetland.

The gas outlet of the anaerobic tank 2 is connected with a gas storage tank, the inlet of the gas storage tank is connected with the outlet of a dehydration device, and the outlet of the dehydration device is connected with the inlet of a desulfurization device. The marsh gas generated by the anaerobic pool 2 is collected and stored in a gas storage box, and can be combusted after dehydration and desulfurization treatment.

In this embodiment, the anaerobic tank 2 is a high-efficiency anaerobic tank, and includes a UAFB anaerobic reactor. The advantages of an upflow anaerobic sludge blanket UASB and an anaerobic filtration reactor AF are integrated, the management is simple after inoculation debugging and normal operation, the BOD5 removal rate is high, the cost is low, the generated sludge is less, stable and easy to dewater, and the occupied area is small. The methane generated by the anaerobic pool 2 can be reused as fuel, and the like.

The bottom of hydrolysis acidification pool and anaerobism pond 2 all is equipped with the mud discharging port, makes things convenient for the mud in the discharge pond, and the mud pipe is connected to the mud discharging port, and the mud pipe accesss to the sludge impoundment. The sludge tank is connected with a sewage pipe, and the sewage pipe leads to the inlet of the first-stage anaerobic tank. So that the sewage in the sludge tank can be pumped into an anaerobic tank system for purification.

Various domestic sewage is converged into a sewage drainage ditch or a sewage drainage pipe. Wherein, the kitchen sewage outlet is provided with an oil separation tank and then is converged into a sewage discharge ditch or a sewage discharge pipe. The sewage discharge ditch or the sewage discharge pipe is communicated with the inlet of the hydrolysis acidification tank, and the inlet of the hydrolysis acidification tank is provided with a grid groove. The sewage in the sewage discharge ditch or the sewage discharge pipe contains garbage such as coarse floating slag, gravel objects and the like, and the garbage is removed and filtered by a grade 2 grid arranged in a grid groove, and then is filtered by a grade 2 stainless steel screen and enters a hydrolytic acidification tank.

The hydrolysis acidification tank of the utility model has the main function of decomposing macromolecular organic matters into micromolecular easily degradable organic matters, and plays a good auxiliary role in the subsequent anaerobic biological treatment; the anaerobic tank system is mainly used for treating high-concentration organic wastewater; residual pollutants such as COD, BOD, SS and the like in the wastewater after anaerobic treatment are basically degraded and removed by the large-area artificial subsurface flow wetland. And the artificial wetland is arranged in a subsurface flow manner, is slightly influenced by climate, has good sanitary condition, can be used as a landscape greening land on the ground, and has good removal effect on organic pollutants, heavy metals and the like.

The utility model integrates sewage purification, waste material conversion and methane production, and has good sewage purification effect.

Of course, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and that such changes and modifications are intended to be included within the scope of the appended claims.

Claims

1. Buried domestic sewage purification ecosystem entirely, its characterized in that: the system comprises a hydrolysis acidification tank, an anaerobic tank system, an artificial wetland and a filter tank, wherein the anaerobic tank system comprises a multi-stage anaerobic tank which is connected in series;

the artificial wetland comprises at least one wetland block, a water collecting layer, a multi-medium ecological filter layer, a water distribution layer and a breathable matrix layer are arranged in the wetland block from bottom to top, a water collecting pipe is arranged in the water collecting layer, and a water distribution pipe is arranged in the water distribution layer;

2. The fully buried domestic sewage purification ecosystem of claim 1, wherein: the exhaust port of the anaerobic tank is connected with the gas storage tank.

3. The fully buried domestic sewage purification ecosystem of claim 2, wherein: the exhaust port of the anaerobic tank is connected with the inlet of the dehydration device, and the outlet of the dehydration device is connected with the inlet of the desulfurization device.

4. The fully buried domestic sewage purification ecosystem of claim 1, wherein: the bottom of the hydrolysis acidification tank and the bottom of the anaerobic tank are provided with sludge discharge ports, the sludge discharge ports are connected with a sewage discharge pipe, and the sewage discharge pipe leads to the sludge tank.

5. The fully buried domestic sewage purification ecosystem of claim 4, wherein: the sludge tank is connected with a sewage pipe, and the sewage pipe leads to the inlet of the first-stage anaerobic tank.

6. The fully buried domestic sewage purification ecosystem of claim 1, wherein: a permeable layer is arranged between the water collecting layer and the multi-medium ecological filter layer, and a permeable layer is arranged between the water distributing layer and the multi-medium ecological filter layer.

7. The fully buried domestic sewage purification ecosystem of claim 1, wherein: the filtering tank is connected with the water storage tank.

8. The buried domestic sewage purification ecosystem of claim 1, 6 or 7, wherein: the artificial wetland also comprises two water inlet pipes, a water outlet blind ditch and two rows of wetland blocks, the water outlet blind ditch is arranged between the two rows of wetland blocks, the outer sides of the two rows of wetland blocks are respectively provided with one water inlet pipe, the water collecting pipe of the wetland blocks is transversely led into the water outlet blind ditch, the water distributing pipe of the wetland blocks is transversely communicated with the water inlet pipe on the outer side of the wetland blocks, the water inlet pipe is connected with the water outlet of the last stage anaerobic tank, and the water outlet blind ditch is connected with the filtering tank.

9. The fully buried domestic sewage purification ecosystem of claim 8, wherein: each column has 5 columns of wetland blocks.

10. The buried domestic sewage purification ecosystem of claim 1 or 9, wherein the ecological characteristics are as follows: the anaerobic pond system is provided with 5-10 anaerobic ponds which are connected in series.