Low-energy self-circulation treatment method for rural sewage

Abstract

The invention discloses a low-energy self-circulation treatment method for rural sewage, which is characterized in that the treatment method comprises the steps of adopting an aerobiotic adherent biological filter method, allowing microorganisms to be adhered onto the surface of a filtering material in an aerobiotic manner, forming a biological film, adsorbing and degrading organics, mixing inflow sewage and filter liquor for dilution, allowing the treated sewage to be continuously circulated and filtered in a device and contacted with the biological film continuously, and achieving a purification purpose. The treatment method has the prominent characteristics that the inflow sewage is filtered for many times through the circulation, and the shock load of a sewage amount is resisted effectively. According to the treatment method, no worker is required for watching; the technological process is simple; a system can completely automatically treat the sewage; and the only power source is an immersible pump located in a pond.

Description

technical field [0001] The invention relates to a low-energy self-circulation rural sewage treatment method, in particular to a rural domestic sewage treatment method. Background technique [0002] At present, there is little difference in the quality of domestic sewage in rural areas. Rural domestic sewage is mainly toilet flushing sewage, laundry, rice washing, vegetable washing, and bathing wastewater. Sewage is mainly domestic waste and human excrement, generally does not contain toxic substances, often contains nutrients such as N and P, and a large number of bacteria, viruses and parasite eggs. However, organic load can vary widely throughout the day, with high organic loads during peak periods and low organic loads during off-peak periods. In addition, the amount of domestic sewage in general rural areas is relatively small, the sewage discharge is uneven, the water volume changes obviously, and the instantaneous change is large. Due to the similar life patterns of...

AI Technical Summary

Problems solved by technology

However, for rural areas that lack professional management personnel, the MBR process is still relatively complicated, requiring sludge discharge and high cost

Membrane cleaning and maintenance are relatively harsh, and cannot effectively cope with the impact load of water volume

[0008] 4. Land treatment technology, including stabilizing pond and artificial wetland treatment technology, is more suitable for small and medium-sized towns and rural areas with less funds, energy shortages, and lack of technical personnel, but covers a large area, and the purification effect is greatly affected by climate and plant growth. Odor and breeding of mosquitoes and flies, weak resistance to organic load and hydraulic load

Although it occupies a small area and has low energy consumption, the transportation of water flow is relatively complicated, and several water pumps are required to be put into use; moreover, the microporous fiber filter cloth is easy to be blocked and requires frequent cleaning, and the maintenance and management are not as simple as the present invention

And it cannot effectively deal with the impact load of water volume

[0010] In addition, there are still many difficulties in the treatment of rural domestic sewage: shortage of funds and energy; serious lack of maintenance and management technicians and operation management experience; increasingly complex sewage components, low concentrations of various pollutant components, and large fluctuations, making it difficult to correctly evaluate the quality of domestic sewage. Pollution load and its diurnal and seasonal changes; small population, low water consumption standards; small scale of sewage treatment, resulting in high construction and operating costs

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