Wastewater treatment method for preventing and treating inhabitant point-surface source pollution in villages and towns

Abstract

The invention discloses a wastewater treatment method for preventing and treating inhabitant point-surface source pollution in villages and towns. The method comprises the following steps: by taking an ecological anaerobic regulation and storage pond (biological pond) as pretreatment, specially designing a biological regulation and storage pond to serve as a front-end treating main body, precipitating suspended matters in the wastewater, hydrolyzing and degrading part of organic pollutants under anoxic and anaerobic conditions, and then entering a middle BIOLAK biochemical treatment system; deeply treating at the tail end through an efficiency biological precipitation pond, taking a vertical flow precipitation pond free of energy consumption as a treatment structure and enabling water quality to reach relative water quality standards stably. The wastewater treatment method is few in process devices, simple and convenient to maintain, simple in wastewater treatment schemes, low in operation cost and low in requirement on technical skills of maintainers; the treated wastewater can reach recycling standards such as an agricultural irrigation standard and the like; the set of treatment process is relatively adaptive to wastewater treatment and management modes of villages and towns and capable of effectively improving the utilization rate of the water and reducing water supply pressure and drought resisting pressure.

Description

technical field [0001] The invention relates to a sewage treatment method for prevention and control of non-point source pollution in villages and towns, and belongs to the technical field of domestic sewage treatment. Background technique [0002] Conventional sewage treatment uses a pure regulating tank structure, which requires a large investment in infrastructure and high energy consumption for mechanical equipment and control systems; the BIOLAK process requires a small front-end sewage load, which is difficult for ordinary regulating tanks to meet. If an additional reaction tank is added, The overall investment will be very large; if a conventional secondary sedimentation tank is used later, there will also be problems of inconvenient management and high investment costs. Contents of the invention [0003] The technical problem to be solved by the present invention is: to provide a sewage treatment method for the prevention and control of non-point source pollution i...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to provide a sewage treatment method for the prevention and control of non-point source pollution in villages and towns, to overcome the above-mentioned defects in conventional sewage treatment technology, and to solve the problem of large capital investment costs, high system energy consumption, and problems in the sewage treatment process. Inconvenient management, dealing with substandard water quality and other problems, and provide a sewage treatment technology that saves infrastructure investment costs, reduces system energy consumption, facilitates management, and meets effluent quality standards

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