CN115849550A - Low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns - Google Patents
Low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns Download PDFInfo
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Abstract
The invention discloses a low-energy-consumption segmented artificial rapid infiltration system for strengthening the sewage treatment efficiency of villages and towns. According to the invention, agricultural wastes are used as an external denitrification carbon source and added into the slow-release carbon source layer of the artificial rapid infiltration pond II, a commercial-grade liquid carbon source is not required to be added, the treatment cost is saved, the resource utilization of the agricultural wastes is realized, and the design of the partition plate in the artificial rapid infiltration pond II is beneficial to realizing the regular replacement of the agricultural wastes; the manganese sand is utilized to form metal-phosphorus precipitate to realize the high-efficiency removal of phosphorus in the sewage; the sewage enters the artificial rapid infiltration tank from the first artificial rapid infiltration tank and flows in a low energy consumption mode through the height difference, so that the energy consumption of sewage treatment is reduced, the method is economic and environment-friendly, and the energy-saving and carbon-reducing targets are met. The invention provides a new way for efficient treatment of village and town sewage and resource utilization of agricultural wastes.
Description
Technical Field
The invention relates to the field of sewage treatment technology and application, in particular to a low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns.
Background
In recent years, with the development of society, the economic level is increasing, and the discharge amount of sewage in villages and towns is remarkably increasing. However, the treatment rate is still low, and the sewage generated by villages and towns is often directly discharged to the surrounding ground, farmlands and riverways through ditches to cause serious pollution. Therefore, the exploration of a suitable village and town sewage treatment technology has important significance for realizing the resource utilization of sewage and improving the village environment.
The artificial rapid infiltration technology is used as a distributed ecological sewage treatment technology, has the advantages of low cost, low energy consumption, simple operation and the like, has obvious effect on treating domestic sewage of medium and small towns and the like, and has good application prospect. The artificial fast infiltration system realizes the purification of waste water through the filtration, interception, adsorption and biodegradation of infiltration medium, the filtration interception and adsorption mainly play a regulating mechanism in the artificial fast infiltration technology, and the real removal of organic pollutants mainly depends on biodegradation. Although the artificial rapid infiltration system shows remarkable results in the aspect of sewage treatment, the outstanding problem of low TN and TP removal rate still exists in the actual engineering operation process, and increasingly strict water quality discharge standards are difficult to meet.
Traditional artifical rapid infiltration layer system TN clearance is lower, mainly because ammonia nitrogen in the sewage converts nitrate nitrogen under the effect of nitrobacteria in artifical rapid infiltration layer system, reduce into nitrogen gas by denitrifying bacteria afterwards, and the organic matter in the sewage leads to the lower part organic matter of rapid infiltration layer pond not enough through the absorption of rapid infiltration layer pond upper portion medium, hold back and the biodegradable effect back, C/N is lower, can not reach the requirement of denitrification far away, thereby make the effect of getting rid of to TN not good, consequently often need plus the carbon source to improve artifical rapid infiltration layer system to TN's clearance. The existing research shows that the agricultural waste is rich in a large amount of lignocellulose, is a natural solid carbon source material, and has the advantages of wide source, low price, biodegradability and the like. However, the natural solid carbon source material has short carbon release time and cannot realize durable carbon supply. At present, a lot of researches have been carried out to prepare a slow-release carbon source by taking the carbon source as a nuclear base, and the slow-release carbon source is added into a sewage treatment system to realize deep denitrification of sewage, such as document CN114656033A. However, in an actual application scenario, the problem that the preparation process is complicated and the like often exists when agricultural wastes are used as nuclear bases to prepare the slow-release carbon source, so that the operation difficulty and the capital investment are increased, and the method is difficult to popularize and apply. Therefore, the improvement of the structure of the artificial rapid infiltration system and the realization of the periodic replacement of the agricultural waste slow-release carbon source have important significance for achieving the treatment of waste by waste, the deep denitrification of sewage and the popularization of the wide application of the artificial rapid infiltration system.
The removal of phosphorus in the artificial rapid infiltration system is the result of the combined action of chemical precipitation, adsorption and biodegradation, and researches suggest that the chemical precipitation and adsorption play a leading role in the removal of phosphorus. The existing research shows that the phosphorus treatment capacity of an artificial rapid infiltration system can be effectively improved by exploring high-efficiency phosphorus removal filler and modifying medium, such as CN 110746057B.
In conclusion, the development of the artificial rapid infiltration system capable of realizing the periodic replacement of the slow-release carbon source and the efficient nitrogen and phosphorus removal has important significance for realizing the resource utilization of agricultural wastes, the quality improvement and the efficiency improvement of sewage and the wide application of the popularization of the artificial rapid infiltration technology.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides the low-energy-consumption segmented artificial rapid infiltration system which is simple in structure, low in energy consumption, low in cost, simple in operation and management and good in pollutant removal efficiency, and has a wide application prospect in the aspect of village and town sewage treatment.
In order to solve the problems, the invention adopts the following technical scheme:
a low-energy-consumption segmented manual rapid infiltration system for strengthening village and town sewage treatment efficiency is disclosed, wherein: the water distributor comprises a water inlet tank, a peristaltic pump, a water distributor, a first artificial rapid infiltration tank, a second artificial rapid infiltration tank and a water outlet, wherein the water inlet tank is communicated with the water distributor above the first artificial rapid infiltration tank through the peristaltic pump and a pipeline, the first artificial rapid infiltration tank is communicated with the Chi Er, and the second artificial rapid infiltration tank is provided with the water outlet.
Preferably, the low-energy-consumption segmented artificial rapid infiltration system for enhancing village and town sewage treatment efficiency is characterized in that: the water inlet pool is positioned below the first artificial rapid infiltration pool, and the water inlet pool and the first artificial rapid infiltration pool are separated by a support.
Preferably, the low-energy-consumption segmented artificial rapid infiltration system for enhancing village and town sewage treatment efficiency is characterized in that: the peristaltic pump is preferably an adjustable flow rate peristaltic pump and is used for controlling the inflow of water.
Preferably, the low-energy-consumption segmented artificial rapid infiltration system for enhancing village and town sewage treatment efficiency is characterized in that: and the first artificial rapid infiltration tank adopts a water distributor to distribute water uniformly.
Preferably, the low-energy-consumption segmented artificial rapid infiltration system for enhancing village and town sewage treatment efficiency is characterized in that: the artificial rapid infiltration tank I comprises a filter material layer I and a supporting layer from top to bottom and is placed on the bracket.
Preferably, the low-energy-consumption segmented artificial rapid infiltration system for enhancing village and town sewage treatment efficiency is characterized in that: the first filter material layer is formed by mixing and filling natural river sand and ceramsite with the particle sizes of 0.7-1 mm and 1-3 mm respectively, and the filling proportion of the natural river sand to the ceramsite is 60% -70% and 30% -40%; the supporting layer is filled with cobbles of 20-30 mm.
Preferably, the low-energy-consumption segmented artificial rapid infiltration system for enhancing village and town sewage treatment efficiency is characterized in that: a movable cover is arranged on the upper portion of the artificial rapid infiltration tank II, two hanging partition plates are arranged inside the artificial rapid infiltration tank II, a hanging basket is hung between the two hanging partition plates, and holes are formed in the periphery and the bottom of the hanging basket.
Preferably, the low-energy-consumption segmented artificial rapid infiltration system for enhancing village and town sewage treatment efficiency is characterized in that: a supporting layer, a filter material layer II and a water collecting layer are arranged in a space formed by a suspended clapboard of the artificial rapid infiltration pond II and the inner wall of the artificial rapid infiltration pond II from bottom to top; the second filter material layer is formed by mixing and filling natural river sand, ceramsite and manganese sand with the grain sizes of 0.7-1 mm, 1-3 mm and 1-2 mm respectively, and the supporting layer and the water collecting layer are formed by filling cobblestones with the grain size of 20-30 mm and gravels with the grain size of 16-32 mm respectively.
Preferably, in the second filter material layer, the filling proportion of the natural river sand, the ceramsite and the manganese sand is 60-70%, 20-30% and 10%.
Preferably, strengthen villages and small towns sewage treatment efficiency's artifical rapid infiltration layer system of low energy consumption, wherein: and an agricultural waste feeding layer is arranged in the hanging basket in the artificial rapid infiltration pond II and is filled with agricultural waste corncobs with excellent carbon release capacity.
Preferably, strengthen villages and small towns sewage treatment efficiency's artifical rapid infiltration layer system of low energy consumption, wherein: the water outlet is arranged at the water collecting layer and communicated with the outside through a water outlet pipe.
Preferably, the low-energy-consumption segmented artificial rapid infiltration system for enhancing village and town sewage treatment efficiency is characterized in that: the lower part of the artificial rapid infiltration tank is provided with a support, and the height difference can be fully utilized to ensure that the effluent of the artificial rapid infiltration tank I automatically flows into the artificial rapid infiltration tank II, thereby saving the energy consumption of sewage treatment.
The invention also provides the application of the low-energy-consumption sectional type manual rapid infiltration system in sewage treatment.
The application principle of the low-energy-consumption sectional type manual rapid infiltration system provided by the invention is as follows:
the village and town sewage is lifted into the water distributor after the water inflow of the water inlet pond is adjusted through the pipeline and the adjustable flow rate peristaltic pump, the sewage uniformly enters the first artificial rapid infiltration tank under the action of the water distributor, and sequentially flows through the first filter material layer and the supporting layer, so that the removal of ammonia nitrogen, the conversion of nitrate nitrogen and the degradation of organic matters in the sewage are realized in the first artificial rapid infiltration tank; the effluent of the first artificial rapid infiltration tank automatically flows into an agricultural waste adding layer in a second artificial rapid infiltration tank by utilizing the potential difference, sequentially flows through a bearing layer, a filter material layer II and a water collecting layer, and flows out through a water outlet pipe, so that denitrification and deep phosphorus removal are realized in the second artificial rapid infiltration tank. Corncobs filled in the agricultural waste adding layer can be used as a carbon source after being decomposed by microorganisms, and the carbon source required in the denitrification process is supplemented. Nitrate nitrogen in the effluent of the first artificial rapid infiltration tank is removed by denitrification by using a carbon source generated by decomposing corncobs as an electron donor under the action of denitrifying bacteria in the second artificial rapid infiltration tank. And the manganese sand in the second filter material layer forms manganese-phosphorus precipitate to remove phosphorus in the sewage. In addition, the partition plate and the hanging basket arranged inside the manual rapid infiltration tank II can realize the regular and efficient replacement of the corncobs.
Compared with the prior art, the invention has the advantages that:
1. the artificial rapid infiltration system suitable for village and town sewage treatment provided by the invention has a low-energy-consumption sectional structure and a preferable filler combination, and realizes high-efficiency treatment of COD, nitrogen and phosphorus in domestic sewage of villages and towns. The ammonia nitrogen in the sewage is converted into nitrate nitrogen by the nitrification reaction in the artificial rapid infiltration pond I, and the required organic matter is provided for the denitrification reaction by adding the corncobs in the artificial rapid infiltration pond II, so that the problem of insufficient carbon source in the denitrification process is solved, and the high-efficiency removal of the nitrogen is realized. In addition, by adding manganese sand filler into the artificial rapid infiltration tank II, phosphorus and manganese sand form manganese-phosphorus chemical precipitation to realize efficient removal of phosphorus in the sewage.
2. The artificial rapid infiltration system provided by the invention has the advantages of low infrastructure operation cost, low energy consumption and simple operation and management. Agricultural wastes are added into the system to serve as an external carbon source, the source is wide, the price is low, the design of the two partition plates and the hanging basket of the artificial rapid infiltration pond is easy to replace the slow-release carbon source regularly, the operation is simple and convenient, and a new way is provided for resource utilization of the agricultural wastes while the quality and the efficiency of sewage treatment are improved.
3. The sewage enters the artificial rapid infiltration tank from the first artificial rapid infiltration tank through the height difference and the second artificial rapid infiltration tank through the low energy consumption mode, and the energy consumption of sewage treatment is reduced.
Drawings
Fig. 1 is a schematic view of a low-energy consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns according to an embodiment of the invention. Description of reference numerals: 1. a water inlet pool; 2. a peristaltic pump with adjustable flow rate; 3. a water distributor; 4. a first artificial rapid infiltration tank; 4-1, a first filter material layer; 4-2, a supporting layer; 5. a second artificial rapid infiltration tank; 5-1, a movable cover; 5-2, hanging a basket; 5-3, a partition board; 5-4, adding an agricultural waste layer; 5-5 bearing layers; 5-6, a second filter material layer; 5-7, a water collecting layer; 6. a water outlet; 7. and (3) a bracket.
FIG. 2 shows the COD removal effect of the effluent of the low energy consumption segmented manual rapid infiltration system in accordance with embodiment 2 of the present invention.
FIG. 3 shows the ammonia nitrogen removal effect of the effluent of the low energy consumption sectional type artificial rapid infiltration system in embodiment 2 of the present invention.
FIG. 4 shows the effluent TN removal effect of the low-energy-consumption segmented manual rapid infiltration system in embodiment 2 of the present invention.
FIG. 5 shows the effect of removing TP in the low energy consumption sectional type manual rapid infiltration system of the present invention in example 2.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, but the scope of the present invention is not limited thereto.
Example 1
As shown in fig. 1, the present embodiment provides a low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency in villages and towns, which is characterized in that: the artificial rapid infiltration water distributor comprises a water inlet pool 1, an adjustable flow rate peristaltic pump 2, a water distributor 3, a first artificial rapid infiltration pool 4, a second artificial rapid infiltration pool 5, a water outlet 6 and a bracket 7, wherein the water inlet pool 1 is communicated with the water distributor 3 above the first artificial rapid infiltration pool 4 through the peristaltic pump 2 and a pipeline, the first artificial rapid infiltration pool 4 is communicated with the second artificial rapid infiltration pool 5, and the second artificial rapid infiltration pool 5 is provided with the water outlet 6; the water inlet tank 1 is arranged below the support 7, and the artificial rapid infiltration tank I4 is arranged on the support 7.
Wherein: and the artificial rapid infiltration tank I4 adopts a water distributor 3 to distribute water uniformly.
Wherein: the artificial rapid infiltration tank I4 comprises a filter material layer I4-1 and a supporting layer 4-2 from top to bottom and is placed on the bracket 7; the filter material layer I4-1 is filled by mixing natural river sand and ceramsite with the particle sizes of 0.7-1 mm and 1-3 mm respectively, and the filling proportion of the natural river sand to the ceramsite is 70% and 30%; the bearing layer 4-2 is filled with 20-30 mm cobblestones.
Wherein: the upper part of the artificial rapid infiltration pond II 5 is provided with a movable cover 5-1, two suspended partition plates 5-3 are arranged inside the artificial rapid infiltration pond II, a hanging basket 5-2 is hung between the two suspended partition plates 5-3, holes are formed in the periphery and the bottom of the hanging basket 5-2, the hanging basket 5-2 is used for placing and replacing an agricultural waste feeding layer 5-4, and the agricultural waste feeding layer 5-4 is filled with an agricultural waste corncob with excellent carbon release capacity, so that required organic matters are provided for denitrification reaction, and the problem of insufficient carbon source in the denitrification process is solved.
Wherein: a supporting layer 5-5, a filter material layer two 5-6 and a water collecting layer 5-7 are arranged in a space formed by a suspended partition plate 5-3 in the artificial rapid infiltration tank two 5 and the inner wall of the artificial rapid infiltration tank two 5 from bottom to top; the second 5-6 filter material layers are filled by mixing natural river sand, ceramsite and manganese sand with the grain sizes of 0.7-1 mm, 1-3 mm and 1-2 mm respectively, and the filling proportion of the natural river sand, the ceramsite and the manganese sand is 70%, 20% and 10%; the supporting layer 5-5 and the water collecting layer 5-7 are respectively filled with cobblestones with the particle size of 20-30 mm and gravels with the particle size of 16-32 mm.
Wherein: the water outlet 6 is arranged at the position of the water collecting layer 5-7.
Wherein: the lower part of the first artificial rapid infiltration tank 4 is provided with a bracket 7, so that the height difference can be fully utilized to ensure that the effluent of the first artificial rapid infiltration tank 4 automatically flows into the second artificial rapid infiltration tank 5, thereby saving the energy consumption of sewage treatment.
The specific implementation process comprises the following steps:
the village and town sewage is lifted into a water distributor 3 after the water inflow is regulated by a water inlet tank 1 through a pipeline by a flow-speed-adjustable peristaltic pump 2, the sewage uniformly enters a first artificial rapid infiltration tank 4 under the action of the water distributor 3, and sequentially flows through a first filter material layer 4-1 and a supporting layer 4-2, and the removal of ammonia nitrogen, the conversion of nitrate nitrogen and the degradation of organic matters in the sewage are realized in the first artificial rapid infiltration tank 4; the effluent of the artificial rapid infiltration tank I4 automatically flows into an agricultural waste feeding layer 5-4 in an artificial rapid infiltration tank II 5 by utilizing the potential difference, sequentially flows through a bearing layer 5-5, a filter material layer II 5-6 and a water collecting layer 5-7, flows out through a water outlet pipe 6, and realizes denitrification and deep dephosphorization in the artificial rapid infiltration tank II 5. Corncobs filled in the agricultural waste adding layer 5-4 can be used as a carbon source after being decomposed by microorganisms, and the carbon source required in the denitrification process is supplemented. Nitrate nitrogen in the effluent of the artificial rapid infiltration pond I4 is removed by denitrification by using a carbon source generated by decomposing corncobs as an electron donor under the action of denitrifying bacteria in the artificial rapid infiltration pond II 5. And manganese sand in the second 5-6 filter material layers forms manganese-phosphorus precipitates to remove phosphorus in the sewage. In addition, the partition plate 5-3 and the hanging basket 5-2 arranged in the manual rapid infiltration pond II 5 can realize the regular and efficient replacement of the corncobs.
Example 2
The artificial rapid infiltration system of example 1 is operated alternately dry and wet, adopts a natural biofilm formation mode, performs biofilm formation starting by gradually increasing the water inlet hydraulic load, and considers that the system biofilm formation starting is successful when the removal rate of the system to COD tends to be stable, and the system is successfully started for 55 d.
The water distribution of the simulated village and town sewage is adopted as inflow, and the inflow water quality index range during the operation is COD: 183-242 mg/L, ammonia nitrogen: 27.3-47.1 mg/L, TN: 29.5-50.5 mg/L, TP: 3.1-6.9 mg/L. The water inlet amount is adjusted by adopting a peristaltic pump with adjustable flow speed, the water inlet time of the sewage is controlled by an intelligent timer socket, the wet-dry ratio is 1:5, the hydraulic load is 6 hours, the water is fed for four times every day, the water inlet time is 1 hour every time, and the hydraulic load is 1-1.5 m 3 /(m 2 D) when the operation is stable, measuring the effluent quality, and obtaining the results shown in the figures 2-5.
As shown in the attached figure 2, in the embodiment, the low-energy-consumption sectional type artificial rapid infiltration system shows excellent COD removal performance, the removal rate is as high as 97.6%, the system water outlet concentration is 5.4mg/L, which is lower than the water quality standard of Farmland irrigation Water quality Standard (GB 5084-2021), and even meets the II-type standard of surface Water environmental quality Standard (GB 3838-2002) and the first-class A standard of pollutant discharge Standard of municipal wastewater treatment plant (GB 18918-2002).
As shown in the attached figure 3, in the embodiment, the removal rate of ammonia nitrogen by the low-energy-consumption sectional type artificial rapid infiltration system reaches 99.1%, and the effluent concentration is 0.32mg/L, which is lower than the first-class A standard of pollutant emission standard of urban sewage treatment plant (GB 18918-2002) and the III standard of surface water environmental quality standard (GB 3838-2002).
As shown in the attached figure 4, in the embodiment, the low-energy-consumption segmented artificial rapid infiltration system shows an excellent TN removal effect, the TN removal rate reaches 86.3%, the system effluent concentration is 5.28mg/L and is far lower than the first-class A standard of pollutant discharge Standard of municipal wastewater treatment plant (GB 18918-2002).
As shown in the attached figure 5, in the embodiment, the manganese sand filler in the artificial rapid infiltration tank II of the low-energy-consumption sectional type artificial rapid infiltration system plays a relatively stable dephosphorization role, so that the system shows an excellent dephosphorization effect, and the effluent concentration is 0.43mg/L and is lower than the first-class A standard of pollutant discharge Standard of municipal wastewater treatment plant (GB 18918-2002).
Comparative example 1
Comparative example 1 differs from example 1 in that: the process device is an improved artificial rapid infiltration integrated device, and comprises a water inlet tank, a water inlet pipe, a water distributor, an artificial rapid infiltration tank and a water outlet pipe; the water inlet tank is communicated with the water distributor through a water inlet pipe, a peristaltic pump is arranged on the water inlet pipe, the water distributor is installed at the top of an artificial rapid infiltration tank, the artificial rapid infiltration tank comprises an upper tank body and a lower tank body which are communicated from top to bottom, the top of the upper tank body is open, a protective layer, a water distribution layer, a first filter material layer and a capillary blocking layer are sequentially arranged in the upper tank body from top to bottom, the lower tank body is connected with the upper tank body through flanges, a slow release carbon source layer, a second filter material layer and a bearing layer are sequentially arranged in the lower tank body from top to bottom, one end of a water outlet pipe is communicated with the bottom of the bearing layer, the other end of the water outlet pipe is flush with the bottom of the capillary blocking layer, wherein the first filter material layer with the first function of 4-1 is uniformly mixed and filled with natural river sand, zeolite, limestone and honeycomb steel slag, and the volume percentages of the natural river sand, the zeolite, the limestone and the honeycomb steel slag are 65%:20%:5%:10 percent. The second filter material layer is uniformly mixed and filled with natural river sand, sponge iron, manganese sand and active coke with the particle sizes respectively, and the volume percentage of the natural river sand, the sponge iron, the manganese sand and the active coke is 69%:10%:1%:20 percent; the water distribution layer is filled with cobbles with the particle size of 20-30 mm, and the capillary blocking layer is filled with the gravel with the particle size of 16-32 mm; the slow-release carbon source layer is corncobs; and nylon nets are arranged above the capillary blocking layer and the supporting layer.
Comparative example 2
Comparative example 2 differs from example 1 in that: the first filter material layer 4-1 is formed by mixing and filling natural river sand and zeolite with the particle sizes of 0.7-1 mm and 1-3 mm respectively, and the filling proportion is 70%:30 percent.
Comparative example 3
The comparative example 3 differs from example 1 in that: and the second 5-6 filter material layers are uniformly mixed and filled with natural river sand with the particle size of 0.7-1 mm and the particle size of 1-3 mm respectively and ceramsite, and the filling proportion is 70%:30 percent.
Village and town sewage treatment is carried out by the integrated manual rapid infiltration process of the comparative example 1 and the sectional manual rapid infiltration processes of the comparative examples 2-3 (specific parameters refer to the example 2), and the sewage treatment effect is shown in the table 1, and the sewage treatment effect is the best treatment effect in the treatment process.
TABLE 1 results of treatment of sewage from villages and towns in comparative examples 1 to 3
As can be seen from Table 1, compared with the improved artificial rapid infiltration integrated process of comparative example 1, the sectional artificial rapid infiltration process of example 2 of the present invention has a certain degree of improvement in removal effects of COD, ammonia nitrogen, TN and TP. The first filter material layer of the comparative example 2 is filled with natural river sand and zeolite, the removal effects of the first filter material layer on COD, ammonia nitrogen, TN and TP are relatively poor, and compared with ceramsite, the zeolite has a small specific surface area, has a certain adsorption effect on ammonia nitrogen but a poor phosphorus adsorption effect, so that the poor phosphorus removal effect is shown. Comparative example 3 lacks manganese sand compared with the examples, and although the ceramsite has a certain phosphorus adsorption property, the phosphorus removal effect is poor when the adsorption saturation is reached.
In addition, in the specific implementation process, compared with the improved manual rapid infiltration integrated process for disassembling the cylinder to replace the carbon source, the sectional type manual rapid infiltration process is simpler and more convenient to operate, and the treatment time is saved.
The foregoing embodiments illustrate the principal features and principles of the present invention, and the present invention is not limited to the above embodiments, and those skilled in the art will understand that modifications and equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a reinforce villages and small towns sewage treatment efficiency's artifical rapid infiltration layer system of low energy consumption, its characterized in that: comprises a water inlet pool (1), a peristaltic pump (2), a water distributor (3), a first artificial rapid infiltration pool (4), a second artificial rapid infiltration pool (5) and a water outlet (6); wherein, intake chamber (1) through peristaltic pump (2) and pipeline with water-locator (3) above artifical rapid infiltration layer pond (4) communicate with each other, artifical rapid infiltration layer pond (4) with artifical rapid infiltration layer pond two (5) communicate with each other, be provided with delivery port (6) on the artifical rapid infiltration layer pond two (5).
2. The low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns according to claim 1, is characterized in that: the water inlet pool (1) is located below the artificial rapid infiltration pool I (4), the artificial rapid infiltration pool I and the artificial rapid infiltration pool I are separated through a support (7), the artificial rapid infiltration pool I (4) comprises a filter material layer I (4-1) and a bearing layer (4-2) from top to bottom, and the artificial rapid infiltration pool I is placed on the support (7).
3. The low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns according to claim 2, wherein: the first filter material layer (4-1) is filled by mixing natural river sand and ceramsite with the particle sizes of 0.7-1 mm and 1-3 mm respectively; the supporting layer (4-2) is filled with cobbles of 20-30 mm.
4. The low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns according to claim 1, wherein: a movable cover is arranged at the upper part of the second artificial rapid infiltration pond (5), two suspended partition plates (5-3) are arranged inside the second artificial rapid infiltration pond, a hanging basket (5-2) is hung between the two suspended partition plates (5-3), and holes are formed in the periphery and the bottom of the hanging basket (5-2); and a supporting layer (5-5), a filter material layer II (5-6) and a water collecting layer (5-7) are arranged in a space formed by the suspended partition plate (5-3) of the artificial rapid infiltration tank II (5) and the inner wall of the artificial rapid infiltration tank II (5) from bottom to top.
5. The low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns according to claim 4, wherein: the second filter material layer (5-6) is filled by mixing natural river sand, ceramsite and manganese sand with the particle sizes of 0.7-1 mm, 1-3 mm and 1-2 mm, and the supporting layer (5-5) and the water collecting layer (5-7) are filled by cobbles and gravels respectively; the hanging basket (5-2) is provided with an agricultural waste feeding layer (5-4).
6. The low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns according to claim 5, wherein: the agricultural waste feeding layer (5-4) is filled with agricultural waste corncobs.
7. The low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns according to claim 4, wherein: the water outlet (6) is arranged at the position of the water collecting layer (5-7).
8. The low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns according to claim 1, wherein: the lower part of the first artificial rapid infiltration tank (4) is provided with a support (7), so that the height difference can be fully utilized to enable the effluent of the first artificial rapid infiltration tank (4) to automatically flow into the second artificial rapid infiltration tank (5), and the energy consumption of sewage treatment is saved.
9. The application of the low-energy-consumption segmented artificial rapid infiltration system for enhancing the sewage treatment efficiency of villages and towns as claimed in any one of claims 1 to 8 in sewage treatment.
10. The use of claim 9, wherein the use is performed by natural biofilm culturing.
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