Rural domestic wastewater treatment apparatus and method

Abstract

The invention discloses a rural domestic wastewater treatment apparatus, comprising an outer ditch bio-multiplication zone in ring shape between a first circular wall and a second circular wall, an inner ditch bio-oxidation zone in ring shape between the second circular wall and a third circular wall, and a precipitating zone formed in the third circular wall; the upper portion of the first circular wall is provided with a water incoming pipe, the second circular wall is provided with an upper opening, and the bottom of the third circular wall is provided with a lower opening; a connection port between the water incoming pipe and the outer ditch bio-multiplication zone and the upper opening are staggered, and the upper opening and the lower opening are staggered; the bottom of the precipitating zone is provided with a mud collection zone, and the bottom of the mud collection zone is provided with a mud discharge pipe; the upper portion of the precipitating zone is provided with a drainpipe, and a water inlet of the drain pipe is positioned in the precipitating zone; a flow pushing aerator is arranged in each of the outer ditch bio-multiplication zone and the inner ditch bio-oxidation zone; a releasable modular lightweight filler is also arranged in the outer ditch bio-multiplication zone and the inner ditch bio-oxidation zone. The invention also discloses a rural domestic wastewater treatment method.

Description

technical field [0001] The invention relates to a sewage treatment device, in particular to a rural household sewage treatment device and method. Background technique [0002] The population density in rural areas is low, the distribution is scattered, the discharge of domestic and production sewage is not up to standard, and it is easy to pollute various water sources. Rural domestic production sewage usually comes from kitchen sewage, washing sewage, animal husbandry sewage, etc., which has the characteristics of large fluctuations in sewage time, large fluctuations in water quality and water volume, etc. At present, rural sewage treatment is relatively simple, sewage collection is not centralized, and there is almost no sewage treatment equipment. Usually, septic tanks are used for treatment, and the concentration of pollutants in the effluent is relatively high. [0003] The population in rural areas is scattered, it is difficult to collect sewage effectively, the const...

AI Technical Summary

Problems solved by technology

[0005] Although the new type of purification tank for rural domestic sewage treatment adopts the non-powered operation mode, it is still a sewage treatment device for centralized collection and treatment of rural domestic sewage. The problem of high investment costs, and the new type of purification tank for rural domestic sewage treatment adopts the method of 4 sub-tanks, which occupies a large area and is not suitable for a single rural user or a limited number of rural users.

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