CN212329235U - Soil pollution water treatment and recycle device - Google Patents
Soil pollution water treatment and recycle device Download PDFInfo
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- CN212329235U CN212329235U CN201921645383.2U CN201921645383U CN212329235U CN 212329235 U CN212329235 U CN 212329235U CN 201921645383 U CN201921645383 U CN 201921645383U CN 212329235 U CN212329235 U CN 212329235U
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Abstract
A soil polluted water treatment and recycling device comprises a box body with an opening at the upper part, water seepage sheets are arranged on the periphery of the upper end of the box body, a filter layer, a partition plate and an ultrafiltration membrane device are respectively arranged in the box body from top to bottom, a sedimentation tank is formed between the filter layer and the partition plate, a pesticide electrolytic tank is formed between the partition plate and the ultrafiltration membrane device, a water collecting area is formed between the ultrafiltration membrane device and the box bottom, and a siphon pipe penetrating through the partition plate downwards is arranged in the sedimentation tank; an ionization device and a water level sensor are arranged in the pesticide electrolytic cell; and a drain pipe is arranged on one side of the water collecting area and discharges water in the water collecting area through a connected water pump. The device can reduce agricultural non-point source pollution, develop water-saving irrigation technology, improve water resource utilization efficiency, has a regulation effect on rainfall infiltration, achieves a good hydrological environment through manual intervention, and realizes sustainable utilization of soil resources and water resources.
Description
Technical Field
The utility model belongs to soil sewage treatment field, concretely relates to soil pollution water treatment and recycling device.
Background
With the rapid advance of the industrialization level, the pesticide is used as essential production data in agricultural production, and makes great contribution to agricultural development and human food supply. Only about 30 percent of pesticide applied to farmland is attached to crops, and the rest about 70 percent of pesticide is diffused into soil and atmosphere, so that the content of pesticide residues and derivatives in the soil is increased, and the farmland soil is polluted. In the soil polluted for a long time, the soil is obviously acidified, the soil nutrients are reduced along with the increase of the pollution degree, and the soil void degree is reduced, so that the soil structure is hardened, and microorganisms, protozoa and other arthropods in the soil are harmed to different degrees. This not only destroys the biodiversity in the soil, but also the pesticide residues enter the human body through the drinking water or the soil-plant system via the food chain, endangering human health. In the early 70 s of the 20 th century, the treatment and remediation of soil pesticide pollution began abroad. The production of wastewater in China is increasing day by day, and particularly, the pesticide wastewater has high organic concentration and complex components and contains substances which are harmful and toxic to the environment and human bodies. For example, in the Zhujiang river basin, the large-scale development and utilization of the land can lead the pesticide and the like remained in the soil to enter the Zhujiang river and the mouth of the Zhujiang river along with the washing of rainwater and the sedimentation of the atmosphere and settle near the south sea area. The problem of water resource shortage in China is aggravated by the discharge of a large amount of waste water, so that agricultural water is squeezed. Therefore, in recent years, more and more attention has been paid to solving the problem of pesticide pollution of soil and developing agricultural water-saving technology.
At present, a biodegradation method is adopted for solving soil pollution, the concentration of pesticides has a large influence on microbial degradation of pesticides, if the concentration of pesticides is too high, the range of biodegradation and bioremediation can be exceeded, which means that the pesticide pollution is difficult to be solved fundamentally, and in the process of repeated pesticide biodegradation and bioremediation experiments, no microorganism can degrade all pesticide harmful substance residues, so that the biodegradation method is greatly limited. In addition, compared with an electric heating device for soil in-situ thermal desorption remediation, the existing physical remediation technology based on reagent delivery has high requirements on environment, consumes large energy, destroys soil conditions and has strong limitation when in use.
Disclosure of Invention
The utility model aims at providing a soil contaminated water treatment and device of recycling utilizes the rainfall to the washing away back of top layer soil, collects the surface runoff and the top layer interflow that have dissolved the pollutant, utilizes the sediment to filter the pesticide composition in collecting soil, and the pesticide in the soil is handled to the indirect catalytic ionization technique of positive pole to carry out the high-efficient irrigation utilization that circulates to the moisture of collecting. Through the application of this device, can alleviate agricultural non-point source pollution, develop the water-saving irrigation technique, improve water resource utilization efficiency, have the regulation effect to rainfall infiltration, make it reach a good hydrology environment through artificial intervention, realize soil resource and water resource sustainable use.
The utility model adopts the technical proposal that:
a soil polluted water treatment and recycling device comprises a box body (16) with an opening at the upper part, water seepage sheets (1) are arranged on the periphery of the upper end of the box body (16), a filter layer (2), a partition plate (5) and an ultrafiltration membrane device (10) are respectively arranged in the box body from top to bottom, a sedimentation tank (3) is formed between the filter layer (2) and the partition plate (5), a pesticide electrolytic tank (9) is formed between the partition plate (5) and the ultrafiltration membrane device (10), a water collecting area is formed between the ultrafiltration membrane device (10) and the box bottom, and a siphon (4) which penetrates through the partition plate (5) downwards is arranged in the sedimentation tank (3); an ionization device and a water level sensor are arranged in the pesticide electrolytic cell (9); a drain pipe (14) is arranged on one side of the water collecting area, and the drain pipe (14) discharges water in the water collecting area through a connected water pump.
The water-collecting area still is provided with high water level drain pipe, and high water level drain pipe is connected with the water pump, and when lasting high strength rainfall, because soil is moist, low water level capillary stop work. The high water level drain pipe drains water to the ditch during the continuous water adding process of the device.
Further, the filter layer (2) is a sand filter layer filled with small-particle sand, and the filter layer comprises a graded sand stone layer; the permeability of the filter layer (strong water permeability layer) is 18-25 md (millidarcy), and the filter layer can filter out silt carried by water flow and with particles.
The noun explains: the graded gravel layer has the grain size of 5-40 mm, wherein the content of 25-40 mm is 30%.
Furthermore, the part of the siphon (4) above the partition (5) is in an inclined S shape, the distance between the water inlet and the partition (5) is 20cm, and the diameter of the siphon is 30 mm.
Furthermore, the water collecting area is divided into a water collecting area A (11) and a water collecting area B (12), the upper water collecting area A (11) is in an inverted cone shape, and the bottom of the upper water collecting area A is provided with a pressure valve (13); the volume ratio of the water collecting area A (11) to the water collecting area B (12) is 1: 10.
when the rainwater is less, the stored water stays in the water collecting area A (11), and when the water collecting amount reaches the threshold value of the pressure valve, the pressure valve is automatically opened, so that the water flows into the water collecting area B (12) through the pressure valve. The purpose of dividing into two catchment areas is to keep the pesticide electrolytic cell (9) containing more water as much as possible when the rainwater is less, otherwise, if the areas are not divided, a small amount of water with permeability is difficult to stay in the electrolytic cell and is directly concentrated on the lower part of the catchment area, and the water quantity of electrolysis can not be achieved all the time.
Further, the ionization device comprises an anode (6), a cathode (7) and a storage battery (8);
the two electrodes are connected through a lead, when the water level reaches a water level line, the water level sensor is connected with a power switch, when the water amount reaches a certain amount, the switch starts a luminous point, and the electrolytic cell starts to work.
Electrode plate distance: at a certain voltage, the rate is approximately proportional to the plate area (plate diameter > plate spacing). In order to improve the efficiency, the polar plates are adopted to be staggered in several pairs, so that the distance between the anode and the cathode is reduced.
The water level sensor monitors the water level of the pesticide electrolytic cell (9), and when the water level height of the electrolytic cell reaches a set value (the set value is equal to the opening value of the pressure valve, and the volume of the solution is determined according to the preset threshold value of the pressure valve so as to set the starting electrolysis water level line), the ionization device is started. The ionization region is discharged by a storage battery, the water containing pesticides is ionized by adopting an indirect anodic oxidation mode, IrO2/RuO 2/Ti/graphite is used as an anode, stainless steel is used as a cathode, most of components of the wastewater before treatment are macromolecular substances, after electrolytic oxidation reaction, the anode is subjected to oxidation reaction to generate strong oxidant hydroxyl radicals, the hydroxyl radicals, chloride ions, iron ions and the like in the water oxidize organic matters in the water, most of macromolecular substance structures in the raw water are damaged and decomposed into nonhazardous micromolecular organic matters, the purpose of degradation is achieved, the substances such as the pesticides and the like are treated by the substances, and then COD (chemical oxygen demand) is blocked by the ultrafiltration membrane.
Furthermore, an infiltrating irrigation module is further arranged on one side of the bottom of the water collecting area, the infiltrating irrigation module comprises a capillary infiltrating irrigation main pipe communicated with the bottom of the water collecting area B (12), the capillary infiltrating irrigation main pipe is connected to an upper soil area, and a capillary infiltrating irrigation branch pipe (15) is arranged at an outlet area of the capillary infiltrating irrigation main pipe.
Water collection area B (12) bottom is carried out the moisturizing through the low water level capillary infiltration irrigation module that sets up to upper portion soil, and when soil is dry, by the effect of pressure messenger rivers get into the capillary, water is carried water to soil through water delivery trunk and branch pipe, and soil matrix suction, plant trunk capillary suction, plant transpiration form the water potential difference again, and this kind of water just can be carried smoothly in the pipe, supplies water to the plant root system, irrigates the crop.
The utility model has the advantages that:
1) high-efficiency degradation of soil pesticide
The method adopts an indirect anodic oxidation mode to treat harmful substances in pesticides such as COD (chemical oxygen demand) and the like, does not need to add reagents, avoids secondary pollution, does not have additional burden to the environment, reduces the harmful effect of the pesticides on the soil performance, and reduces the influence of pollutants on the emission environment. Can be carried out at normal temperature and normal pressure, and has high action speed and obvious effect. Although the ultrafiltration membrane layer has a simple structure during pesticide treatment, the ultrafiltration membrane layer only can play a role in separating water from pesticides, and the ionization treatment layer (namely an electrolytic cell) consumes a part of energy, but has a good pesticide treatment effect, and the two layers are combined and complemented to realize efficient degradation of the pesticides.
2) High-efficiency water-saving irrigation
Compared with the traditional water-saving irrigation technologies such as drip irrigation, infiltrating irrigation and the like, the device stores irrigation water by utilizing rainfall rainwater and soil flow, uniformly treats the collected water and performs resource utilization; the advantage of underground water collection is fully exerted in utilization, the infiltrating irrigation water-saving technology of capillary water delivery is adopted, the power requirement can be reduced in an active irrigation mode, and the infiltrating irrigation system has the advantages of being small in evaporation amount, seepage amount and surface loss amount, free of damage to a soil structure and the like. The treated rainwater resource returns to the farmland, increases the soil moisture and keeps the soil activity.
3) Arrangement of siphon
The siphon is equivalent to further filtration, and the water-collecting sediment in this part, when the liquid level floods the mouth of pipe, just by the pressure effect, the supernatant of sedimentation tank begins to get into the electrolytic bath, avoids material such as tiny granule earth to block up the milipore filter, reduces the life of whole device.
4) The arranged ultrafiltration membrane layer can prevent the pesticide from leaking and only allows water to pass through, when the pesticide-containing water flows through the surface of the membrane, a plurality of fine micropores densely distributed on the surface of the ultrafiltration membrane only allow small molecular substances such as water and the like to pass through, and the substances with the same volume as the pesticide, which are larger than the micropore diameter of the surface of the membrane, are intercepted on the liquid inlet side of the membrane.
Compared with the existing chemical reagent treatment, the device is more environment-friendly, does not generate new pollution to soil, and can be suitable for various pesticide residues; compared with biological treatment, the device achieves the purpose faster, and meanwhile, the normal growth of crops cannot be influenced. The soil conditioner is suitable for soil which is repeatedly and widely used, and avoids great harm to water, soil and organisms caused by most of residual pesticide and chemical fertilizer flowing into surrounding water sources through surface runoff.
Drawings
FIG. 1 is a view showing the construction of an apparatus;
FIG. 2 is a system block diagram;
in the figure, 1 a water permeable sheet; 2, a filter layer; 3, a sedimentation tank; 4, a siphon pipe; 5, a partition board; 6. 7, cathode and anode electrodes; 8, a storage battery; 9 a pesticide electrolytic cell; 10 an ultrafiltration device; 11 water collecting area A; 12 water collecting area B; 13 a pressure valve; 14 water discharge pipes; 15 capillary infiltrating irrigation branch pipe.
Detailed Description
As shown in fig. 1 and 2, a soil polluted water treatment and recycling device comprises a box body 16 with an upper opening, water seepage sheets 1 are arranged on the periphery of the upper end of the box body 16, a filter layer 2, a partition plate 5 and an ultrafiltration membrane device 10 are respectively arranged in the box body from top to bottom, a sedimentation tank 3 is formed between the filter layer 2 and the partition plate 5, a pesticide electrolytic tank 9 is formed between the partition plate 5 and the ultrafiltration membrane device 10, a water collecting area is formed between the ultrafiltration membrane device 10 and the bottom of the box, and a siphon 4 which downwards penetrates through the partition plate 5 is arranged in the sedimentation tank 3; an ionization device and a water level sensor are arranged in the pesticide electrolytic cell 9; a drain pipe 14 is provided at one side of the water collecting area, and the drain pipe 14 discharges water in the water collecting area through a connected water pump.
The water-collecting area still is provided with high water level drain pipe, and high water level drain pipe is connected with the water pump, and when lasting high strength rainfall, because soil is moist, low water level capillary stop work. The high water level drain pipe drains water to the ditch during the continuous water adding process of the device.
The filter layer 2 is a sand filter layer filled with small-particle sand, the filter layer is graded sand, the grain size of the graded sand is required to be 5-40 mm, and the content of 25-40 mm is 30%; the permeability of the filter layer (strong water permeability layer) is 18-25 md (millidarcy), and the filter layer can filter out silt carried by water flow and with particles.
The part of the siphon 4 above the baffle 5 is in an inclined S shape, the distance between the water inlet and the baffle 5 is 20cm, and the diameter of the siphon is 30 mm.
The water collecting area is divided into a water collecting area A11 and a water collecting area B12, the upper water collecting area A11 is in an inverted cone shape, and the bottom of the upper water collecting area A11 is provided with a pressure valve 13; the volume ratio of the water collecting area A11 to the water collecting area B12 is 1: 10.
when the rainwater is less, the stored water stays in the water collecting area A11, and when the water collecting amount reaches the threshold value of the pressure valve, the pressure valve is automatically opened, so that the water flows into the water collecting area B12 through the pressure valve. The purpose of dividing into two catchment areas is to keep the pesticide electrolytic cell 9 with more water content as much as possible when the rainwater is less, otherwise, if not, a small amount of water with permeability is difficult to stay in the electrolytic cell and is directly concentrated on the lower part of the catchment area, and the water content of electrolysis can not be achieved all the time.
The ionization device comprises an anode 6, a cathode 7 and a storage battery 8;
the two electrodes are connected through a lead, when the water level reaches a water level line, the water level sensor is connected with a power switch, when the water amount reaches a certain amount, the switch starts a luminous point, and the electrolytic cell starts to work.
Electrode plate distance: at a certain voltage, the rate is approximately proportional to the plate area (plate diameter > plate spacing). In order to improve the efficiency, the polar plates are adopted to be staggered in several pairs, so that the distance between the anode and the cathode is reduced.
The water level sensor monitors the water level of the pesticide electrolytic cell 9, and when the water level of the electrolytic cell reaches a set value (the set value is equal to the opening value of the pressure valve, and the volume of the solution is determined according to the preset threshold value of the pressure valve so as to set the starting electrolysis water level), the ionization device is started. The ionization region is discharged by a storage battery, the water containing pesticides is ionized by adopting an indirect anodic oxidation mode, IrO2/RuO 2/Ti/graphite is used as an anode, stainless steel is used as a cathode, most of components of the wastewater before treatment are macromolecular substances, after electrolytic oxidation reaction, the anode is subjected to oxidation reaction to generate strong oxidant hydroxyl radicals, the hydroxyl radicals, chloride ions, iron ions and the like in the water oxidize organic matters in the water, most of macromolecular substance structures in the raw water are damaged and decomposed into nonhazardous micromolecular organic matters, the purpose of degradation is achieved, the substances such as the pesticides and the like are treated by the substances, and then COD (chemical oxygen demand) is blocked by the ultrafiltration membrane.
And an infiltrating irrigation module is also arranged on one side of the bottom of the water collecting area, the infiltrating irrigation module comprises a capillary infiltrating irrigation main pipe communicated with the bottom of the water collecting area B12, the capillary infiltrating irrigation main pipe is connected to an upper soil area, and a capillary infiltrating irrigation branch pipe 15 is arranged at the outlet area of the capillary infiltrating irrigation main pipe.
The low water level capillary infiltrating irrigation module that catchment district B12 bottom was through setting up carries out the moisturizing to upper portion soil, when soil is dry, makes rivers get into the capillary by the effect of pressure, and water is carried water to soil through water delivery trunk and branch pipe, and soil matrix suction, plant trunk capillary suction, plant transpiration form the water potential difference again, and this kind of water just can be carried smoothly in the pipe, supplies water to the plant root system, irrigates the crop.
The operation mode is as follows:
the pesticide is enriched in surface soil after use. During rainfall, surface runoff and interflow in the aeration zone are formed on the surface of the soil by utilizing rainwater, and most of pesticides are taken away. Because the device is placed in a low-lying terrain and is guided by the water seepage sheets, water flows finally flow into the device under the action of natural gravity. The water seepage sheet arranged on the side wall of the upper part of the device can filter most of silt in the incoming flow, the filter layer can further filter sandstone in the water, and the water treated by the filter layer is precipitated in the sedimentation tank to obtain water completely free of large-particle-size solid impurities such as silt; and then, water is sucked into the pesticide electrolytic cell on the lower layer by a siphon principle through a siphon pipe, the lower wall of the pesticide electrolytic cell is an ultrafiltration layer, when water passes through an ultrafiltration device, water and pesticide are separated due to different molecular diameters, the water flows into a water collecting tank A below the ultrafiltration device, and the pesticide is separated in a liquid state in the pesticide electrolytic cell.
And a pressure valve is arranged below the water collecting tank A, and is opened when the gravity of liquid in the pesticide electrolytic tank and the water collecting tank A reaches a set pressure, the opening value of the pressure valve is consistent with the starting value of the electrolytic liquid level, so that the pesticide electrolytic tank starts to work, and the pesticide is divided into non-toxic or low-toxicity small molecular substances dissolved in water through the negative and positive electrolytic areas.
And the treated water flows into a water collecting tank B, the water collecting tank B is connected with a capillary filtration irrigation branch pipe, and a capillary core is arranged in the capillary filtration irrigation branch pipe. When the water level of the water collecting area is higher, the redundant accumulated water is discharged from the water discharging pipe; when the soil around the water distribution pipe is dry, the recovered water in the water collecting tank is sucked out by the capillary tube for infiltrating irrigation of the soil. The purposes of treating soil pesticides and recycling water resources are achieved.
Claims (6)
1. A soil polluted water treatment and recycling device is characterized by comprising a box body (16) with an opening at the upper part, water seepage sheets (1) are arranged on the periphery of the upper end of the box body (16), a filter layer (2), a partition plate (5) and an ultrafiltration membrane device (10) are respectively arranged in the box body from top to bottom, a sedimentation tank (3) is formed between the filter layer (2) and the partition plate (5), a pesticide electrolytic tank (9) is formed between the partition plate (5) and the ultrafiltration membrane device (10), a water collecting area is formed between the ultrafiltration membrane device (10) and the box bottom, and a siphon (4) which penetrates through the partition plate (5) downwards is arranged in the sedimentation tank (3); an ionization device and a water level sensor are arranged in the pesticide electrolytic cell (9); a drain pipe (14) is arranged on one side of the water collecting area, and the drain pipe (14) discharges water in the water collecting area through a connected water pump.
2. A soil polluted water treatment and reuse apparatus according to claim 1 wherein said filter layer (2) is a sand filter layer filled with small granular sand, the filter layer comprising a graded sand stone layer; the permeability of the filter layer is 18-25 md, and granular silt carried by water flow can be filtered out.
3. A soil polluted water treatment and reuse apparatus according to claim 1 wherein the portion of said siphon (4) above the partition (5) is of a dumping S-shape, the water inlet is located at a distance of 20cm from the partition (5), and the diameter of the siphon is 30 mm.
4. A soil polluted water treatment and reuse apparatus according to claim 1 wherein said catchment area is divided into catchment area a (11) and catchment area B (12), upper catchment area a (11) is of inverted cone type and pressure valve (13) is provided at bottom; the volume ratio of the water collecting area A (11) to the water collecting area B (12) is 1: 10.
5. a soil polluted water treatment and reuse apparatus according to claim 1 wherein said ionization means includes an anode (6), a cathode (7) and a storage battery (8).
6. A soil contaminated water treatment and reuse apparatus according to claim 1, wherein an infiltrating irrigation module is further provided at a side of a bottom of the water collecting section, said infiltrating irrigation module comprises a capillary infiltrating irrigation trunk pipe communicating with a bottom of the water collecting section B (12), said capillary infiltrating irrigation trunk pipe is connected to the upper soil region, and a capillary infiltrating irrigation branch pipe (15) is provided at an outlet region of the capillary infiltrating irrigation trunk pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645383.2U CN212329235U (en) | 2019-09-29 | 2019-09-29 | Soil pollution water treatment and recycle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645383.2U CN212329235U (en) | 2019-09-29 | 2019-09-29 | Soil pollution water treatment and recycle device |
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| Publication Number | Publication Date |
|---|---|
| CN212329235U true CN212329235U (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921645383.2U Expired - Fee Related CN212329235U (en) | 2019-09-29 | 2019-09-29 | Soil pollution water treatment and recycle device |
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| CN (1) | CN212329235U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113083874A (en) * | 2021-04-07 | 2021-07-09 | 常州大学 | Soil remediation integrated device and method |
-
2019
- 2019-09-29 CN CN201921645383.2U patent/CN212329235U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113083874A (en) * | 2021-04-07 | 2021-07-09 | 常州大学 | Soil remediation integrated device and method |
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Granted publication date: 20210112 Termination date: 20210929 |