Unpowered micro cascade sewage treatment device

Abstract

The invention relates to an unpowered micro cascade sewage treatment apparatus. A pocket-type shrinkable filter net is arranged at a sewage inlet of an oblique plate settling zone, the lower portion is provided with an energy dissipation sludge trough, an anaerobic water stop zone and an anaerobic filter zone are communicated by virtue of an overflow elbow at an overflow port, the bottom of the anaerobic filter zone is communicated with an oxygen-deficient filter zone by virtue of a bottom porous fixed plate, the upper portion of the oxygen-deficient filter zone is communicated with a sewage reoxygenation zone by virtue of an overflow elbow at an overflow port, an automatic oxygen charging chemical feeding part is installed in the sewage reoxygenation zone, the bottom of the sewage reoxygenation zone is communicated with an aerobic filter zone by virtue of a bottom fixed porous plate of the aerobic filter zone, and the top of a movable porous plate on the upper portion of the aerobic filter zone is provided with an active carbon filter zone and an intergranular permeable zone; and sewage separately enters the anaerobic water stop zone and the sewage reoxygenation zone by virtue of the overflow ports in the oblique plate settling zone and the anaerobic filter zone in an overflowing manner, and the sewage in the anaerobic water stop zone and the sewage reoxygenation zone enters the oxygen-deficient filter zone and the aerobic filter zone separately in a reversed permeation manner, so that the water conservancy retention time is increased, and the sewage treatment effect is improved.

Description

technical field [0001] The invention relates to a sewage treatment device, in particular to a non-powered micro-step sewage treatment device, which belongs to the technical field of non-powered sewage treatment. Background technique [0002] In my country, residents in rural or remote areas have relatively weak awareness of environmental protection, and residents in some rural and remote areas are too scattered to establish a centralized sewage treatment system similar to cities. Therefore, compared with cities with increasingly mature sewage collection and treatment technologies, rural areas The water pollution in China is more serious than that in cities. The rural areas of our country produce more than 8 billion tons of domestic sewage every year, and most of the rural areas do not have sewage treatment systems and drainage channels. The discharge of domestic sewage is very random and basically enters natural water bodies. With the continuous strengthening of the local ec...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the current problems of water body pollution caused by the random discharge of household domestic sewage in rural or remote areas. situation, and provide a non-powered micro cascade sewage treatment device

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