CN210559946U

CN210559946U - Rural water resource recycling system

Info

Publication number: CN210559946U
Application number: CN201921379260.9U
Authority: CN
Inventors: 倪舒原; 刘加强; 孙凌; 范秀磊; 李昂; 李莹; 杨成方
Original assignee: Xuzhou University of Technology
Current assignee: Xuzhou University of Technology
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-05-19
Anticipated expiration: 2029-08-23

Abstract

The utility model provides a rural water resource cyclic utilization system, abandon class device, urine excrement disconnect-type lavatory, integration sewage treatment device, constructed wetland including initial stage rainwater. The initial rainwater is abandoned and flows into the integrated sewage treatment equipment for treatment, so that the pollution of the initial rainwater to the water environment is reduced. The urine and excrement separation toilet is used, so that the urine and excrement separation is realized, the urine returns to the field, and the use of fertilizers is reduced. The integrated sewage treatment equipment integrates a grid pool, an adjusting pool, a hydrolysis pool, an anoxic pool, a biomembrane pool and a sedimentation pool, and is mainly used for treating mixed sewage consisting of initial rainwater, liquid dung, laundry wastewater, kitchen wastewater and aquaculture wastewater. The artificial wetland further purifies the sewage, and the purified sewage is recycled for flushing the toilet, so that the aim of efficiently recycling water resources is fulfilled.

Description

Rural water resource recycling system

Technical Field

The utility model belongs to the sewage treatment field, concretely relates to rural water resource cyclic utilization system.

Background

At present, rural economy develops rapidly, and peasant's standard of living is very improved, but rural environmental construction and economic development are asynchronous, and among them the water environmental pollution problem is especially serious. Untreated domestic sewage is discharged at will, so that the water quality of ditches and ponds blackens and becomes smelly, mosquitoes breed, the rural living environment is affected, the physical health of residents is threatened, and meanwhile, the pollution of drinking water sources and the eutrophication of lakes and reservoirs can be caused. A complete sewage collecting system is not available in rural areas at present. Due to the limitation of economic conditions and the lack of environmental protection consciousness, sewage is collected by open channels or closed pipes in rural areas in China, and the sewage collection facilities are simple and crude, so that the difficulty in collecting and treating domestic sewage is increased. In the year 2 of 2017, a plan of comprehensive treatment of national rural environments, thirteen five, which is jointly printed by the ministry of environmental protection and the ministry of finance, is provided, 13 thousands of constructed villages which complete the comprehensive treatment of the environments are newly added in 2020, the planning target of more than 1/3 of the total number of the national constructed villages is reached in an accumulated mode, the major treatment fields comprise the fields of rural drinking water source and land protection, domestic garbage and sewage treatment and the like, and therefore the rural sewage treatment is vigorously developed at the moment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is abandoned class device through setting up the rainwater, abandons class entering integration sewage treatment device to initial stage rainwater and handles, reduces the pollution of initial stage rainwater to water environment. In order to solve the above problems, the utility model adopts the following technical proposal:

a rural water resource recycling system comprises an initial rainwater discarding device, a urine-feces separation toilet, integrated sewage treatment equipment and an artificial wetland; the initial rainwater discarding device separates rainwater into initial rainwater and middle and later stage rainwater, and the initial rainwater and the middle and later stage rainwater are respectively discharged through an initial rainwater pipeline and a middle and later stage rainwater pipeline; the urine-feces separation type toilet separates human excrement into urine and feces liquid, and the urine and feces liquid are discharged through a urine pipeline and a feces liquid pipeline respectively; the initial rainwater pipeline, the liquid manure pipeline and other sewage pipelines are connected with the integrated sewage treatment equipment; the rainwater pipeline in the middle and later stages and the water outlet pipeline of the integrated sewage treatment equipment are connected with the artificial wetland.

Furthermore, the initial rainwater discarding device comprises a rainwater well, the rainwater well is provided with a rainwater inlet, an initial rainwater outlet and a middle and later stage rainwater outlet, an upper baffle and a lower baffle are arranged in the rainwater well, a vertical first spring is arranged between the upper baffle and the lower baffle, the upper end and the lower end of the first spring are respectively connected with the upper baffle and the lower baffle, the lower baffle is fixed on the inner wall of the rainwater well, and the upper baffle can move up and down relative to the lower baffle; a floating ball is arranged below the upper baffle, a water outlet matched with the floating ball is arranged on the lower baffle, and the floating ball can block the water outlet; a filter screen is arranged on the upper baffle; the initial stage rainwater outlet is positioned below the lower baffle, and the rainwater inlet and the middle and later stage rainwater outlets are positioned above the upper baffle. Because the initial rainwater has more impurities, silt and other pollutants, the initial rainwater is directly discharged into a water body, and the pollution to the water environment is serious. The accessible sets up the rainwater and abandons a class well, and initial stage rainwater is abandoned to flow and is got into integration sewage treatment device further to be handled, and the later stage cleaner rainwater gets into the further back of purifying of constructed wetland and recycles towards the lavatory.

Further, the urine-feces separation toilet comprises a flushing port, a liquid feces outlet and a urine outlet; the urine outlet is connected with a urine pipeline; the liquid dung outlet is connected with a liquid dung pipeline. The urine pipeline is connected with a urine storage tank, and urine is collected and then is conveyed to an orchard for fertilization; the excrement and urine is mixed with the laundry wastewater, the kitchen wastewater and the breeding wastewater to flow into the integrated sewage treatment equipment together.

Furthermore, the urine outlet is provided with a bouncing type drainer; the bounce type drainer comprises a plug, a rubber sealing ring is arranged on the plug, a filter screen separation blade is arranged above the urine outlet, a mesh is arranged in the middle of the bounce type drainer, a second spring is connected between the plug and the filter screen separation blade, a water bearing device with holes is arranged below the filter screen separation blade, and the water bearing device with holes is positioned in a urine pipeline and is connected with the plug. When a person urinates, urine slowly flows down and flows into the water bearing device with the holes, and the urine is received by the water bearing device with the holes and is discharged. When the toilet is flushed, due to the fact that the water quantity is large and the flow rate of water is high, flushing water received in the water container with the holes cannot be drained timely, the plug descends under the action of gravity, the rubber sealing ring is in sealing fit with the urine outlet, so that flushing water cannot be drained into the water outlet, the flushing water overflows from the spring type drainer and flows into the liquid dung outlet, when the flushing water in the water container with the holes gradually flows away, the pulling force of the water container with the holes on the plug is gradually reduced, and the plug is restored to the original position under the elastic force action of the spring.

Furthermore, the integrated sewage treatment equipment comprises a grating tank, an adjusting tank, a hydrolysis tank, an anoxic tank, a biological contact oxidation tank (MBBR tank) and a sedimentation tank which are sequentially communicated; the initial rainwater pipeline and the liquid dung pipeline are connected with the grid pond, and the sedimentation pond is connected with the artificial wetland. The electric energy needed by a water pump, a stirrer and a blower in the device is partially provided by solar energy.

The grid pond can trap large floaters. The sewage flows into the regulating tank through the grid tank, the regulating tank has a certain regulating volume to homogenize the sewage, and the regulating tank is provided with a small plug-flow submersible stirrer at the bottom to homogenize the sewage. The water-resistant capacity and the water quality impact load capacity of the whole system are improved. The outlet water of the adjusting tank is lifted by a water pump. The sewage of the regulating tank flows into a hydrolysis tank, more than 80 percent of solid, macromolecules and organic matters which are not easy to be biodegraded in the water are degraded into micromolecular organic matters which are easy to be biodegraded in a hydrolysis acidification stage, and the effluent BOD₅The ratio of COD to oxygen is increased, and the oxygen demand and the aeration time of biological treatment are reduced. Through hydrolysis treatment, the organic matters in the wastewater not only change greatly in quantity, but also change in physicochemical properties, so that the wastewater is more suitable for subsequent aerobic treatment, and canPurging is accomplished with a smaller amount of air in a shorter residence time. The pond sewage of hydrolysising flows into the oxygen deficiency pond, further mixes sewage, utilizes high-efficient biological elastic filler in the pond as the bacterium carrier, hydrolysises macromolecule organic matter into the micromolecule organic matter, increases biochemical dwell time, improves the treatment effeciency. The sewage in the anoxic tank flows into the biomembrane tank for treatment, the MBBR process makes the carrier in a fluidized state by means of aeration in the aeration tank and the lifting action of water flow, and then suspended growth activated sludge and attached growth biomembranes are formed, and BOD is effectively removed at the stage. And the sewage flows into a vertical sedimentation tank for sludge-water separation. The supernatant flows into the artificial wetland for further purification, the sewage purified by the artificial wetland is collected into a water storage tank to be used as reclaimed water for flushing a toilet, and the redundant part is discharged into a natural water body nearby.

Furthermore, the artificial wetland is provided with 2 grids which are separated by retaining walls, and each grid is sequentially provided with an HDPE geomembrane impervious layer, a pebble cushion layer, a sand layer and a planting soil layer from bottom to top; the wall is provided with upper and lower wall through holes alternately. The inlet of the artificial wetland is provided with a water inlet weir for uniformly distributing water, and the outlet of the artificial wetland is provided with a water collecting well. And part of the effluent of the water collecting well is discharged into a natural water body, and part of the effluent is recycled for flushing a toilet.

Furthermore, the planting density of the planting soil layer is preferably 9-12 plants/m²The thickness of the planting soil layer is 50cm, the thickness of the sand layer is 30-50cm, the thickness of the pebble cushion layer is 5-10cm, and the thickness of the HDPE geomembrane as an impervious layer is 1.5 mm.

Has the advantages that: the utility model discloses set up initial stage rainwater and abandon a class device, collect the processing to initial stage rainwater, reduce the pollution of initial stage rainwater to the water environment. The urine and the excrement are used for separating the toilet, the urine is recovered, and the urine is returned to the field for orchard fertilization, so that not only can phosphate rock resources be saved, but also the income of fruit growers can be improved; the integrated equipment is used for purifying the mixed sewage consisting of initial rainwater, liquid dung, laundry wastewater, kitchen wastewater and breeding wastewater, the process is mature, the treatment effect is good, the operation cost is low by using solar power supply, and the operation is convenient; the sewage after further treatment of the artificial wetland is used as reclaimed water for flushing the toilet, so that the high-efficiency utilization of water resources is realized.

Drawings

FIG. 1: schematic view of initial rainwater discarding device;

FIG. 2: schematic diagram of a urine-feces separation squatting pan;

FIG. 3: a schematic view of the integrated sewage treatment plant;

FIG. 4: a schematic diagram of an artificial wetland;

FIG. 5: schematic diagram of a bounce-type drainer.

Reference numbers in the figures: 1.1, catch-basin; 1.2, a rainwater inlet; 1.3, an initial rainwater outlet; 1.4, a middle and later stage rainwater outlet; 1.5, a first spring; 1.6, an upper baffle plate; 1.7, a lower baffle plate; 1.8, a water outlet; 1.9, floating balls; 1.10, a filter screen; 2.1, a liquid manure outlet; 2.2, a urine outlet; 2.3, a liquid manure pipeline; 2.4, a urine pipeline; 2.5, a flushing port; 3. a grid well; 4. a regulating tank; 5. a hydrolysis tank; 6. an anoxic tank; 7. a biological contact oxidation pond; 8. a sedimentation tank; 9. a blower room; 10. a solar power generation system; 11.1, planting a soil layer; 11.2, a sand layer; 11.3, a pebble cushion layer; 11.4, using HDPE geomembrane as an impervious layer; 12.1, lower wall through holes; 12.2, upper wall through holes; 13. a water inlet weir; 14. a water collecting well; 15.1, a plug; 15.2, a rubber sealing ring; 15.3, a filter screen baffle sheet; 15.4, a second spring; 15.5, a water bearing device with holes.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1, the initial rainwater drainage pipe is provided with an initial rainwater drainage device, the rainfall amount at the initial stage of rainfall is small, and when rainwater flows through the drainage device, the rainwater enters a rainwater well from a rainwater inlet 1.2 and is discharged through a filter screen 1.10 of an upper baffle plate 1.6, a water outlet 1.8 and an initial rainwater outlet 1.3 in sequence. After the rainfall is increased, the pressure acting on the upper baffle plate 1.6 is increased due to the action of gravity, the floating ball 1.9 positioned at the upper end of the water outlet 1.8 blocks the water outlet 1.8 under the action of the pressure of water flow, the liquid level in the rainwater well is raised, and rainwater is discharged from the rainwater outlet 1.4 at the middle and later stages. After the rain stops, the floating ball 1.9 automatically resets under the action of the elastic force of the first spring 1.5 along with the reduction of the rainwater stored in the device, so that the initial rainwater discarding function is realized.

As shown in fig. 2, the toilet with separated urine and feces is exemplified by a squatting pan. The squatting pan is provided with a liquid dung outlet 2.1, a urine outlet 2.2 and a flushing port 2.5. A bounce type drainer can be additionally arranged at the urine outlet 2.2 and comprises a plug 15.1, a rubber sealing ring 15.2 is arranged on the plug 15.1, a filter screen separation blade 15.3 is arranged above the urine outlet 2.2, a mesh is arranged in the middle of the urine outlet, a second spring 15.4 is connected between the plug 15.1 and the filter screen separation blade 15.3, a water bearing device 15.5 with holes is arranged below the filter screen separation blade 15.3, and the water bearing device 15.5 with holes is positioned in the urine pipeline 2.4 and is connected with the plug 15.4.

When a person urinates, urine is discharged from the urine outlet 2.2, the water volume is large during flushing, accumulated water in the water bearing device with holes 15.5 cannot be discharged in time, the rubber sealing ring 15.2 is driven to be attached to the urine outlet 2.2 under the action of gravity, water cannot be discharged from the urine outlet 2.2, the water overflows from the excrement outlet 2.1, flushing water in the water bearing device with holes 15.5 flows away gradually, the tensile force of the water bearing device with holes 15.5 to the plug 15.1 is reduced gradually, and the plug 15.1 restores to the original position under the elastic action of the second spring 15.4. The urine and the excrement can be separately collected, and then the urine is collected and stored in a urine storage tank through a pipeline and then is transported to an orchard for fertilization; excrement mixed culture wastewater, laundry wastewater, kitchen wastewater and initial rainwater flow into the integrated sewage treatment equipment together.

The sewage flows into the grating well 3, and large floating objects in the sewage are intercepted and enter the subsequent treatment unit.

The sewage flows into the regulating tank 4 through the grid well 3, so that the water quality homogenization and the water quantity regulation can be realized.

The water flows into the hydrolysis tank 5 after passing through the regulating tank 4, and the solid, macromolecules and organic matters which are not easy to be biodegraded in the water are degraded into micromolecular organic matters which are easy to be biodegraded through the action of facultative microorganisms, so that the biodegradability of the waste water is improved, and the subsequent aerobic biological treatment is facilitated.

The sewage in the hydrolysis tank 5 flows into the anoxic tank 6, the sewage is further mixed, the biochemical retention time is prolonged, and the treatment efficiency is improved.

The sewage in the anoxic tank 6 flows into the biological contact oxidation tank 7, the MBBR process leads the carrier to be in a fluidized state by means of aeration in the aeration tank and the lifting action of water flow, and then suspended growing activated sludge and attached growing biomembranes are formed, so that the effective removal of BOD and the implementation of nitration reaction can be realized.

The sewage of the biological contact oxidation tank 7 enters a sedimentation tank 8, the sludge-water separation can be realized, and the supernatant flows into the artificial wetland for further purification treatment. The precipitated sludge enters a centrifugal dehydrator for dehydration, the separated sludge is dried and transported out, and the separated liquid flows back to a regulating tank for further treatment.

The sewage flows into the artificial wetland after passing through the sedimentation tank 8, and pollutants such as organic matters, nitrogen, phosphorus and the like are further removed by utilizing the artificial wetland. The planting density of the aquatic plants in the artificial wetland is preferably 9-12 plants/m²The thickness of the planting soil layer is 50cm, the sand layer of 30-50cm is used as a filtering layer, pebbles of 5-10cm are used as a cushion layer, and HDPE geomembrane with the thickness of 1.5mm is used as an impervious layer. As shown in fig. 4, the effluent of the sewage treatment integrated equipment and the rainwater at the middle and later stages enter the first grid artificial wetland from the water inlet weir 13 at the right side of the artificial wetland, the sewage enters the second grid artificial wetland from the lower wall penetrating hole 12.1 of the middle retaining wall from top to bottom, and the sewage enters the water collecting well 14 from the upper wall penetrating hole 12.2 of the left retaining wall from bottom to top. And part of water in the water collecting well 14 which meets the treatment standard is used as reclaimed water for flushing a toilet, and the rest of water flows into a nearby natural water body automatically. The water inlet weir 13 is integrated with the rightmost retaining wall.

A solar power generation system 10 can be arranged, electric energy required by the operation of the integrated equipment comes from solar energy, and the integrated equipment is connected with commercial power to ensure the safe operation of the equipment.

The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A rural water resource recycling system is characterized by comprising an initial rainwater discarding device, a urine and feces separation type toilet, integrated sewage treatment equipment and an artificial wetland; the initial rainwater discarding device separates rainwater into initial rainwater and middle and later stage rainwater, and the initial rainwater and the middle and later stage rainwater are respectively discharged through an initial rainwater pipeline and a middle and later stage rainwater pipeline; the urine-feces separation type toilet separates human excrement into urine and feces liquid, and the urine and feces liquid are discharged through a urine pipeline and a feces liquid pipeline respectively; the initial rainwater pipeline and the liquid dung pipeline are respectively connected with the integrated sewage treatment equipment; the rainwater pipeline in the middle and later stages and the water outlet pipeline of the integrated sewage treatment equipment are respectively connected with the artificial wetland.

2. The rural water resource recycling system according to claim 1, wherein the initial rainwater discarding device comprises a rainwater well, the rainwater well is provided with a rainwater inlet, an initial rainwater outlet and a middle and later stage rainwater outlet, an upper baffle and a lower baffle are arranged in the rainwater well, a vertical first spring is arranged between the upper baffle and the lower baffle, the upper end and the lower end of the first spring are respectively connected with the upper baffle and the lower baffle, the lower baffle is fixed on the inner wall of the rainwater well, and the upper baffle can move up and down relative to the lower baffle; a floating ball is arranged below the upper baffle, a water outlet matched with the floating ball is arranged on the lower baffle, and the floating ball can block the water outlet; a filter screen is arranged on the upper baffle; the initial stage rainwater outlet is positioned below the lower baffle, and the rainwater inlet and the middle and later stage rainwater outlets are positioned above the upper baffle.

3. The rural water resource recycling system of claim 1, wherein the urine-feces separation toilet comprises a flushing port, a liquid feces outlet and a urine outlet; the urine outlet is connected with a urine pipeline; the liquid dung outlet is connected with a liquid dung pipeline.

4. The rural water resource recycling system of claim 3, wherein the urine outlet is provided with a bouncing type drainer; the bounce type drainer comprises a plug, a rubber sealing ring is arranged on the plug, a filter screen separation blade is arranged above the urine outlet, a mesh is arranged in the middle of the bounce type drainer, a second spring is connected between the plug and the filter screen separation blade, a water bearing device with holes is arranged below the filter screen separation blade, and the water bearing device with holes is positioned in a urine pipeline and is connected with the plug.

5. The rural water resource recycling system of claim 1, wherein the integrated sewage treatment facility comprises a grid tank, a regulating tank, a hydrolysis tank, an anoxic tank, a biological contact oxidation tank, and a sedimentation tank which are sequentially communicated; the initial rainwater pipeline and the liquid dung pipeline are connected with the grid pond, and the sedimentation pond is connected with the artificial wetland.

6. The rural water resource recycling system of claim 1, wherein the constructed wetland is provided with 2 grids which are separated by retaining walls, and each grid is sequentially provided with an HDPE geomembrane impermeable layer, a pebble cushion layer, a sand layer and a planting soil layer from bottom to top; upper and lower wall through holes are alternately arranged on the adjacent retaining walls; the inlet of the artificial wetland is provided with a water inlet weir for uniformly distributing water, and the outlet of the artificial wetland is provided with a water collecting well; and part of the effluent of the water collecting well is discharged into a natural water body, and part of the effluent is recycled for flushing a toilet.

7. The system for recycling rural water resources according to claim 6, wherein the planting density of the planting soil layer is preferably 9-12 plants/m²The thickness of the planting soil layer is 50cm, the thickness of the sand layer is 30-50cm, the thickness of the pebble cushion layer is 5-10cm, and the thickness of the HDPE geomembrane as an impervious layer is 1.5 mm.