Novel technology for treating domestic sewage in rural area

Abstract

The invention discloses a system and method for treating domestic sewage in a rural area, which belongs to the technical field of environment-friendly sewage treatment. The domestic sewage enters an aerated grit chamber also serving as an adjusting tank for carrying out appropriate grit setting and adjusting, so that a part of inorganic pollutants is removed; the sewage is conveyed to a concentration type two-stage anaerobic reaction tank through a lifting water pump, suspended matters in the sewage are filtered and intercepted when the sewage passes through a concentration filter layer; contaminated gases, such as CH4, H2S and the like generated in the concentration type two-stage anaerobic reaction tank are discharged through a gas port; a part of concentration liquid is discharged out of the system through a concentration bottom sediment drainage pipe by opening a valve regularly; supernatant fluid from a water outlet of the concentration type two-stage anaerobic reaction tank enters a ladder plunge type wetland, a non-medium wetland, an economic income type wetland, a bacteria filter and a fishpond in turn; and nitrogen and phosphorus eutrophic pollutants in water are filtered, intercepted, adsorbed, decomposed, absorbed and precipitated by rootstocks of aquatic plants and the like. Therefore, according to the novel technology disclosed by the invention, the purpose of water purification can be achieved through regular harvest.

Description

technical field [0001] The invention relates to a domestic sewage treatment technology, in particular to a new rural domestic sewage treatment technology, which belongs to the technical field of environmental protection sewage treatment. Background technique [0002] The "Eleventh Five-Year Plan" put forward the major historical task of building a new socialist countryside, and clarified the construction goals of "development of production, affluent life, civilized rural customs, clean and tidy villages, and democratic management", and strengthened the treatment of rural domestic sewage. It is an integral part of village renovation and an important part of the construction of a new socialist countryside. However, 96% of villages in my country do not have drainage channels and sewage treatment systems. The environmental pollution caused by the random discharge of rural domestic sewage is not only a potential safety hazard in rural water sources. , will also exacerbate the crisi...

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Problems solved by technology

[0006] In order to solve the deficiencies and defects existing in the existing rural domestic sewage treatment technology, this invention presents a new rural domestic sewage treatment technology, which adopts a new concept of wetland water purification, breaks the traditional thinking, and saves complicated treatment processes and huge filter beds , the wetland bed is designed as a real floating wetland purification system constructed by aquatic plants of different water levels, by regularly salvaging old plant residues, pollutants are transferred from the water, and the purification of polluted water is realized

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