Blocking and controlling system for non-point source pollution in middle water network zone and construction method thereof

Abstract

The invention discloses a blocking and controlling system for non-point source pollution in a middle water network zone and a construction method of the blocking and controlling system for non-point source pollution in the middle water network zone. The system comprises a front end sewage collecting separating system, a middle section sewage blocking disposing system, a tail end sewage disposing reusing system and a solid content harmless recycling system, wherein a non-point sewage composite blocking and controlling mesophytia is formed by the middle section sewage blocking disposing system and the tail end sewage disposing reusing system. The system has the advantages that non-point source pollution in the water network zone is blocked and controlled step-by-step and level-by-level, the disposing effect is stable, and final disposal of pollutants is achieved; the non-point sewage composite blocking and controlling mesophytia is established through each disposing unit in a coupled mode so that a high-level water network ecosphere can be formed, the ecology landscape value is high, water sources can be regulated and stored, the climate can be regulated, and ecological balance is maintained; the system is simple in structure, easy to construct, low in investment, small in damage to bays and villages, and capable of integrating the functions of cultivation production, water discharging, irrigation, water retention and soil fixation into a whole, and therefore a combined, polybasic and high-level village ecology production system is constructed.

Description

technical field [0001] The invention relates to the technical fields of comprehensive control of pollution in villages and towns and water and soil engineering, in particular to a control system for non-point source pollution in central water network areas and a construction method thereof. Background technique [0002] Non-point source sewage pollution refers to that in rural life and agricultural production activities, dissolved or solid pollutants from non-specific areas, under the action of precipitation and runoff erosion, cause a large amount of pollution through farmland surface runoff, farmland drainage and underground seepage. Pollution caused by pollutants entering the receiving water body. In recent years, with the continuous deepening and improvement of point source pollution control in my country, non-point source pollution in rural areas, especially environmental pollution caused by non-point source sewage has gradually become the focus of environmental academi...

AI Technical Summary

Problems solved by technology

At present, the sewage collection methods in the central water network area include hidden pipes, grass ditches, hardened ditches, etc.; non-point source sewage treatment processes include ecological ponds, artificial wetlands, land infiltration, ecological dripping, and ecological ditches; among them, ecological ponds and ecological ditches The cost is low, the treatment effect is good, and it also has the value of water conservancy and ecological landscape, but the treatment effect is not good, and it is strictly restricted by environmental conditions; while the artificial wetland and land infiltration technology have strong treatment capacity, excellent nitrogen and phosphorus interception effect and low cost. relatively cheap

[0006] (2) Solid waste pollution includes domestic waste and agricultural production waste, and the latter includes biomass waste (straw, livestock waste) and non-degradable waste. At present, waste in water network areas has not been effectively collected and controlled, and it is mainly discarded and piled up on the spot Mainly, it is easy to enter the surface and groundwater through rainwater and leaching. If it is burned on site, it will cause serious air pollution.

[0007] (3) Human and animal feces pollution has been significantly improved in recent years through septic tanks and new rural construction, but septic tanks cannot achieve the ultimate harmless treatment of feces, nor can they effectively realize the recycling of biomass

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