CN211644987U

CN211644987U - New rural hilly area resident house domestic sewage purifies recycling system

Info

Publication number: CN211644987U
Application number: CN201922456700.2U
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: 2020-10-09
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a purifying and recycling system for domestic sewage in the living quarters of the hilly areas in new rural areas, which comprises a deslagging grid groove, a sand setting adjusting hydrolysis-acidification tank, a multistage anaerobic tank, a wetland or land, a sludge sedimentation tank, a filtering tank and a recycling tank which are sequentially communicated; the biogas generated by the multistage anaerobic tank is input into a gas-water separation device, a water outlet of the gas-water separation device is communicated with a sand setting adjusting hydrolysis acidification tank, an exhaust port of the gas-water separation device is communicated with a desulfurization device, and an exhaust port of the desulfurization device is connected with a gas storage tank. The utility model adopts the ecological technology of high-efficiency anaerobic and wetland or land combined treatment, the high-efficiency anaerobic is mainly, the wetland or land is assisted and complemented and united, and then the sewage is discharged after precipitation and filtration, the purification effect is good, and the domestic sewage can be ensured to be treated and purified to reach the discharge standard; the produced sludge and methane can be used as fertilizer and feed; the effluent can be reused as water for agricultural irrigation and cleaning or for fish culture in ecological ponds.

Description

New rural hilly area resident house domestic sewage purifies recycling system

Technical Field

The utility model relates to a useless sewage treatment purifies technical field, especially relates to new rural hillock district folk house domestic sewage purifies recycling system.

Background

The shortage of water resources and water pollution in China severely restrict the healthy and continuous development of the overall economy of China, the lag of infrastructure and low management level inhibit the improvement and the improvement of the quality of life of residents in rural areas, the country is increasing the strength to support new rural water improvement projects, and the water environment treatment in rural areas should become an important component part of the comprehensive environment treatment in China.

In vast rural areas, a great amount of production waste (sewage) water discharged by products produced by taking animals and plants as raw materials (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.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a new rural hillock district local-style dwelling houses domestic sewage purifies recycling system can purify new rural hillock district local-style dwelling houses domestic sewage.

In order to achieve the above purpose, the utility model discloses an ecological technology, the scheme is as follows:

the system for purifying and recycling the living domestic sewage in the hilly areas of the new rural areas comprises a deslagging grid groove, a sand setting adjusting hydrolysis acidification tank, a multistage anaerobic tank, a wetland or land, a sludge sedimentation tank, a filtering tank and a recycling water tank which are sequentially communicated;

biogas generated by the multistage anaerobic tank is introduced into a gas-water separation device, a water outlet of the gas-water separation device is communicated with a sand setting adjusting hydrolysis acidification tank, an air outlet of the gas-water separation device is communicated with a desulfurization device, and an air outlet of the desulfurization device is connected with an air storage tank.

Further, a sludge pump is arranged at the bottom of the sludge sedimentation tank, a sludge pump outlet is connected with a drain pipe, the drain pipe is connected with a sludge concentration tank, and a liquid outlet of the sludge concentration tank is communicated with a sand settling adjustment hydrolysis acidification tank.

Furthermore, an inclined pipe area is arranged in the sludge settling tank.

Preferably, the multi-stage anaerobic tank is a two-stage anaerobic tank.

Or the multistage anaerobic tank is a three-stage anaerobic tank.

Further preferably, the three-stage anaerobic tank is respectively: the anaerobic composite sludge bed comprises a first-stage anaerobic composite sludge bed high-efficiency anaerobic tank, a second-stage down-flow type fixed biological membrane high-efficiency anaerobic tank and a third-stage up-flow type anaerobic filtration high-efficiency anaerobic tank.

Furthermore, a pressure regulating tank is arranged between the anaerobic tanks.

Furthermore, a water distributor is arranged at the bottom of the settling sand adjusting hydrolysis acidification tank, a porous filler is arranged above the water distributor, and the porous filler is a plastic foam porous filler, an elastic filler or a BF filler.

Furthermore, a sampling well is arranged between the filtering tank and the reuse water tank.

Wherein, a reuse water pump is installed in the reuse water tank.

Compared with the prior art, the utility model discloses have following effect of showing:

1, the utility model adopts the ecological technology of high-efficiency anaerobic and wetland or land auxiliary combined treatment, the high-efficiency anaerobic is mainly, the wetland or land auxiliary combined treatment is realized, the complementary combined treatment is carried out, the treatment and the purification are carried out after the precipitation and the filtration, the purification effect is good, and the treatment and the purification of the domestic sewage can be ensured to reach the discharge standard;

2, the utility model adopts anaerobic treatment as the main part, and has low energy consumption, low investment, low operating cost and simple management; the generated sludge is little, only is 1/6-1/10 aerobic, has high mineralization degree, is easy to dehydrate, has small treatment device and low corresponding treatment cost;

3, anaerobic treatment is mainly performed, so that the purification treatment is mostly performed under a closed condition, and the operation control and odor control are easy; the anaerobic condition needs less nutrient; because the sludge concentration is high, the sludge can bear larger load and water quality change, the volume load generally reaches 5-10kgCOD/m3.d, and the sludge concentration can reach 50kg COD/m3. d; the sludge can be stored for a long time and keeps activity, so that seasonal intermittent operation is normal;

4, the generated sludge and methane can be used as fertilizer, feed and chemical raw materials; the effluent can be reused as water for cleaning, cooling and agricultural irrigation, or stored as water for fire fighting and fish culture in ecological ponds, and has certain economic benefit.

Drawings

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

FIG. 2 is a schematic diagram of a three-stage anaerobic tank;

FIG. 3 is a plan view of a grit conditioning hydrolysis acidification tank;

fig. 4 is a sectional view of the constructed wetland;

fig. 5 is a plan view of the water distributor of the artificial wetland.

Detailed Description

In order to make the objects, ecological 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.

Example one

As shown in figure 1, the utility model discloses a new rural hillock district resident house domestic sewage purifies recycling system, including sludge thickening tank 13 and the slagging-off grid groove 1 that communicates in proper order, grit regulation hydrolysis-acidification pond 2, multistage anaerobism pond, wetland 10, sludge sedimentation tank 6, filtering ponds 7, reuse pond 9.

In order to reduce the land use area and save the civil engineering cost, the utility model discloses carry out partial cell body and build jointly. The sand setting adjusting hydrolysis acidification tank 2 is a combined tank integrating slag removal, sand setting, homogenization/hydrolysis acidification and PH adjusting modification functions. In order to exert the high-efficiency function of the anaerobic hydrolysis acidification process, the tank is provided with a water distributor in the activated sludge at the bottom; the filler is arranged above the activated sludge, and is plastic foam porous filler, elastic filler or BF filler. The sand setting adjustment hydrolysis acidification tank 2 ensures that the quality of the treated inlet water is uniform and the water quantity is relatively stable, and can improve the rate of degrading pollutants in the subsequent biochemical treatment tank.

As shown in figure 3, a deslagging grid groove 101 is arranged at the inlet of the settling sand adjusting hydrolysis acidification tank 2, and a manual or mechanical grid and a 10-20-mesh stainless steel wire net are arranged in the deslagging grid groove 101 to realize deslagging. The grid sets up twice, and one clearance is 10mm, and another clearance is 5mm, and thick sediment in order to avoid blockking up follow-up processing facility, equipment can be got rid of to the sewage flow through the grid, does benefit to and influences the treatment effect. In order to save cost, manual periodical slag removal can be adopted. The settling sand adjusting hydrolysis acidification tank 2 is tightly connected with a deslagging grid groove 101.

As shown in fig. 1, this embodiment includes a two-stage anaerobic tank; a first-stage anaerobic tank 3 and a second-stage anaerobic tank 4.

In another embodiment, as shown in fig. 2, the multi-stage anaerobic tank is a three-stage anaerobic tank. The three-stage anaerobic tank comprises: the anaerobic composite sludge bed comprises a first-stage anaerobic composite sludge bed high-efficiency anaerobic tank, a second-stage down-flow type fixed biological membrane high-efficiency anaerobic tank and a third-stage up-flow type anaerobic filtration high-efficiency anaerobic tank.

The first stage anaerobic composite sludge bed efficient anaerobic tank is a 'UASB + AF' reactor formed by combining an activated sludge bed of an up-flow anaerobic sludge bed reactor with an anaerobic filter and a down-flow anaerobic filter material biomembrane bed and matching with a bionic water distributor, and is called first stage UASB + AF for short. The lower part of the reactor is 1.0m active sludge bed, the bottom of the reactor is provided with a bionic water distributor connected with the water from the forebay, and the upper part of the reactor is provided with a 1.0-3.0 m filtering (filling) material biomembrane bed. The above dimensions are references provided by the present embodiment, and the specific dimensions should be determined according to the water volume and the effective water depth of the pool.

The water distributor at the bottom of the sludge bed can digest the activated sludge from bottom to top and make the fully activated sludge bed enrich, acclimate and propagate the granular sludge in the metabolism.

The core of the anaerobic filter and the down-flow anaerobic filter is a filtering (filling) material biomembrane bed, and the wastewater plays a key role no matter passes through the biomembrane bed in an up-flow and down-flow mode, so that the anaerobic filter does not consume energy, generates the biogas CH4, and is simple to manage after entering normal operation.

The second-stage high-efficiency anaerobic tank is a down-flow type fixed biological membrane high-efficiency anaerobic tank, which is called a second-stage DSFF anaerobic tank for short; the third-stage high-efficiency anaerobic tank is an up-flow type anaerobic filtration high-efficiency anaerobic tank, and is called a third-stage AF anaerobic tank for short. The anaerobic granular sludge is enriched in the anaerobic tank, so that the unit volume load and the pollutant removal rate are greatly improved, the tank volume can be reduced, the occupied area is reduced, and the investment and operation cost are reduced.

Biogas generated by the multistage anaerobic tank is introduced into a gas-water separation device 16, a water outlet of the gas-water separation device 16 is communicated with a deslagging grid groove 1, an exhaust port of the gas-water separation device 16 is communicated with a desulfurization device 17, and an exhaust port of the desulfurization device 17 is connected with a gas storage tank 19. The produced marsh gas can be burnt.

The wetland 10, i.e. wetland ecosystem, is a unified whole consisting of wetland plants, animals, microorganisms inhabiting the wetland and the environment thereof. The wetland has multiple functions of protecting biological diversity, regulating runoff and improving water quality. The wetland ecosystem belongs to a water area ecosystem, a biological community of the wetland ecosystem consists of aquatic and terrestrial species, the material circulation, the energy flow and the species migration and evolution are active, and the wetland ecosystem has higher ecological diversity, species diversity and biological productivity. China's wetlands are widely distributed in plateau plains, hills and other regions, and the regions can be purified by utilizing natural wetlands. The wetland surface plants aquatic plant, and in the in-process that sewage flows along certain direction, under the physical and biological effect of plant and microorganism, the high-efficient purification to sewage is realized through plant absorption, microorganism absorption degradation to the pollutants in the sewage, and organic pollutant and impurity are got rid of under the absorption effect of plant, soil basically in the sewage.

An inclined pipe area 61 is arranged in the sludge settling tank 6, and the effluent of the wetland 10 is drained to the lower part of the inclined pipe area 61 through a pipeline. The sludge pump 62 is arranged at the bottom of the sludge sedimentation tank 6, the outlet of the sludge pump 62 is connected with a blow-off pipe, the blow-off pipe is connected with the sludge concentration tank 13, and the liquid outlet of the sludge concentration tank 13 is communicated with the sand settling regulation hydrolysis acidification tank 2.

The supernatant fluid of the sludge sedimentation tank 6 automatically flows into a filtering tank 7, flows into a reuse water tank 9 after being filtered by the filtering tank 7, a reuse water pump 91 is installed in the reuse water tank 9, and the reuse water pump 91 is used for pumping out the water in the reuse water tank 9 to be used as water for cleaning, cooling and agricultural irrigation or to be stored as water for fire fighting, water for fish culture in an ecological pond and the like. A sampling well 8 is arranged between the filtering tank 7 and the reuse water tank 9, so that sampling is convenient.

The principle of the utility model is as follows:

domestic sewage enters a slag removal grid groove 1, and after the sewage passes through a grid net, coarse and sinkable solids and floating objects are intercepted; the sewage automatically flows into a sand setting adjustment hydrolysis acidification tank 2, the sand setting adjustment hydrolysis acidification tank 2 carries out sediment precipitation and water quality and water quantity adjustment on the sewage, and macromolecular organic matters are converted into micromolecular organic matters through hydrolysis acidification and are decomposed into stable sediments;

the effluent of the sand setting adjusting hydrolysis acidification tank 2 automatically flows into a water distributor of the bottom area of a first-stage UASB + AF anaerobic tank, the water distributor distributes sewage to a high-activity anaerobic sludge bed and an anaerobic composite bed reaction area, so that high-concentration organic matters in the sewage are treated, the treated sewage flows into a pressure regulating tank and then sequentially passes through a second-stage DSFF anaerobic tank, the pressure regulating tank and a third-stage AF anaerobic tank for treatment; decomposing most organic matters in the sewage under the action of anaerobic bacteria in the third-stage anaerobic tank; the treated sewage flows to the wetland 10, and under the action of a wetland ecosystem, residual organic matters in the sewage are removed;

discharging the water treated by the microorganisms at the front section into a sludge sedimentation tank 6, and automatically flowing clear water precipitated by the sludge sedimentation tank 6 into a filter tank 7 to remove residual organic matters in the sewage; the water filtered by the filtering tank 7 enters a reuse water tank 9 for water storage. And the sludge in the anaerobic tank and the sludge sedimentation tank 6 is discharged into a sludge concentration tank 13, clear liquid in the sludge concentration tank 13 is introduced into a sand setting adjusting hydrolysis acidification tank 2 to continue carrying out microbial treatment, and the solid in the sludge concentration tank 13 is manually transported and treated.

The use method of the utility model is described as follows:

domestic sewage is subjected to two deslagging processes of setting a grid clearance from 10mm to 5mm, then is filtered by a stainless steel wire net of 10-20 meshes, and then enters a sand settling, adjusting, hydrolyzing and acidifying tank 2;

the sand setting adjustment hydrolysis acidification tank 2 ensures that after the biomass organic wastewater is hydrolyzed and acidified for 2.5 to 5.0 hours, the COD, BOD and SS are respectively removed by about 40 percent, 30 percent and 80 percent and then enter the post-treatment, and the effect of the stage is fully utilized when the method is applied, thereby being very beneficial to the later anaerobic treatment. The reactor is combined with a water collecting chamber, a homogenizing adjusting chamber and a pressure adjusting chamber of an anaerobic tank for water treatment into a whole, so that the integration of multiple processes and functions can be realized, the reactor is reduced, and the investment, operation and management costs are saved.

The total tank volume of the three-stage anaerobic tank is operated at normal temperature: v = Q × 1.5 × a, a = 3-10; when BOD is less than or equal to 200 mg/L, a is taken as 3; when BOD is more than or equal to 200 mg/L, a is more than 3.

After hydrolysis and three-stage anaerobic treatment, most of the biomass organic wastewater in the domestic sewage meets the requirement of irrigation water, even better, and can be discharged or recycled after reaching the standard by the wetland 10 and filtration treatment. Requiring the effluent to reach the surface water GBIV can adopt the utility model discloses.

In practical application, the effluent is recycled as cleaning, cooling and agricultural irrigation water according to the requirements or stored as fire-fighting water, water for fish culture in ecological ponds and the like according to the local conditions.

The sludge generated in each pool is turbid in effluent according to the operation for 1 year to no more than 2 years, and is pumped by a sludge pump pipe to be transported to other places needing to be used as strains, or used as agricultural and forestry fruit and vegetable fertilizers, or used for garbage field treatment. In practical application, sludge is inoculated, cultured and domesticated, so that the sludge can be quickly started and normally operated.

Example two

The difference between this embodiment and the first embodiment is: as shown in fig. 4 and 5, the wetland 10 in the present embodiment is an artificial wetland. The artificial wetland comprises a plain soil compaction layer 101, a C15 cushion layer 102 with the thickness of 100mm, an SBS waterproof layer 103, a C20 concrete bottom plate 104 with the thickness of 200mm, a filler 105 special for wetland with the thickness of 50-100 mm, geotextile 106 and planting soil 1010 special for wetland plants with the thickness of 200mm, which are arranged from bottom to top. The thickness of each layer can be reasonably set according to actual needs. The wetland special packing 105 can be pebbles, broken stones, river sand and the like; can be used for planting swamp plants such as Ecliptae herba, Cyperus rotundus, Thymus floridus, Heimeria, Dahua, etc. As shown in fig. 4 and 5, a water distributor 108 is arranged in the wetland special packing 105, a main pipe of the water distributor 108 is communicated with a ditch 109, and the ditch 109 is connected with the water from the front anaerobic tank. The branch pipes 110 of the water distributor 108 are provided with overflow ports which are 5cm apart, 5mm wide and 4cm deep, and the overflow ports are covered with geotechnical cloth seal heads.

The principle of the utility model is as follows:

the effluent of the sand setting adjusting hydrolysis acidification tank 2 automatically flows into a water distributor of the bottom area of a first-stage UASB + AF anaerobic tank, the water distributor distributes sewage to a high-activity anaerobic sludge bed and an anaerobic composite bed reaction area, so that high-concentration organic matters in the sewage are treated, the treated sewage flows into a pressure regulating tank and then sequentially passes through a second-stage DSFF anaerobic tank, the pressure regulating tank and a third-stage AF anaerobic tank for treatment; decomposing most organic matters in the sewage under the action of anaerobic bacteria in the third-stage anaerobic tank; the treated sewage flows to the artificial wetland;

the artificial wetland is characterized in that sewage is controllably delivered to wetland fillers through simulation and natural wetland function enhancement, aquatic plants are planted on the surface of the wetland, in the process that the sewage flows along a certain direction, under the triple effects of the fillers, plants and microorganisms, pollutants in the sewage are filtered by the fillers, absorbed by the plants and adsorbed and degraded by the microorganisms, so that the sewage is efficiently purified, organic pollutants and impurities in the sewage are basically removed in the section under the adsorption and absorption effects of the plants and the soil, and the effluent can be directly used for agricultural irrigation;

the effluent of the artificial wetland enters a sludge sedimentation tank 6, and clear water precipitated by the sludge sedimentation tank 6 automatically flows into a filter tank 7 to remove residual organic matters in the sewage; the water filtered by the filtering tank 7 enters a reuse water tank 9 for water storage.

In another embodiment, the wetland is replaced with land.

The utility model combines physics and biochemistry together, the advantages of the physics and biochemistry are complementary, and high-efficiency anaerobism is combined with wetland or land, so that the pollutant removal rate is high, and the effluent quality is good; the energy consumption is low, the gas production is good, the produced biogas is used as fuel, the productivity and efficiency are improved, and the pollution is reduced.

The present invention is capable of other embodiments and its several details are capable of modification and variation and can be made by those skilled in the art without departing from the spirit and essential attributes of the invention.

Claims

1. New rural hillock district resident house domestic sewage purifies recycling system, its characterized in that: comprises a deslagging grid groove, a sand setting adjusting hydrolysis acidification tank, a multi-stage anaerobic tank, a wetland or land, a sludge sedimentation tank, a filtering tank and a reuse water tank which are sequentially communicated;

2. The system of claim 1, wherein the system comprises: the sludge pump is established to sludge sedimentation tank bottom, and sludge pump exit linkage blow off pipe, blow off union coupling sludge thickening tank, sludge thickening tank's liquid outlet and sand setting are adjusted hydrolysis-acidification pond and are communicated.

3. The system of claim 2, wherein the system comprises: an inclined pipe area is arranged in the sludge settling tank.

4. The system of claim 1, wherein the system comprises: the multi-stage anaerobic tank is a two-stage anaerobic tank.

5. The system of claim 1, wherein the system comprises: the multistage anaerobic tank is a three-stage anaerobic tank.

6. The system of claim 5, wherein the system comprises: the three-stage anaerobic tank comprises: the anaerobic composite sludge bed comprises a first-stage anaerobic composite sludge bed high-efficiency anaerobic tank, a second-stage down-flow type fixed biological membrane high-efficiency anaerobic tank and a third-stage up-flow type anaerobic filtration high-efficiency anaerobic tank.

7. The system according to claim 1, 4, 5 or 6, characterized in that: a pressure regulating tank is arranged between the anaerobic tanks.

8. The system of claim 1, wherein the system comprises: the bottom of the settling sand adjusting hydrolysis acidification tank is provided with a water distributor, a porous filler is arranged above the water distributor, and the porous filler is a plastic foam porous filler, an elastic filler or a BF filler.

9. The system of claim 1, wherein the system comprises: a sampling well is arranged between the filter tank and the reuse water tank.

10. The system of claim 1 or 9, wherein the system comprises: a reuse water pump is arranged in the reuse water pool.