Fast infiltration system used for rural sewage treatment and fast infiltration method thereof

Abstract

The invention discloses a fast infiltration system used for rural sewage treatment. The system is composed of an upper layer and a lower layer, wherein a lower-layer tank body is composed of a gratingditch, an oil removal sedimentation tank, an adjusting tank and a water outlet tank, an upper-layer tank body is a fast infiltration tank, the fast infiltration system used for rural sewage treatmentis further provided with an external fan, the fast infiltration tank comprises a water collection layer and a plurality of infiltration layers from bottom to top, the water collection layer comprisesa water gathering layer, a middle bearing board and a dephosphorization layer from bottom to top in sequence, the water gathering layer is connected with a water outlet tank through a water gatheringpipe, the infiltration layers comprise bottom bearing boards, lower infiltration layers, transition layers and fast filtering layers from bottom to top in sequence, air distributing pipes are arranged on the lower infiltration layers, each air distributing pipe is connected with an air distribution header pipe, an air source is from the external fan, water distribution pipes are arranged on the fast filtering layers, and each water distribution pipe is connected with a water distribution header pipe; a reflux pump is arranged in the water outlet tank. By means of the fast infiltration systemused for rural sewage treatment, the concentration of pollutants which enter the fast infiltration tank is reduced, sewage short flows, orifice blocking and filler hardening are reduced, and maintenance workloads of workers are reduced.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a rapid infiltration system and a rapid infiltration method for rural sewage treatment. Background technique [0002] With the development of society, the improvement of economic level, the process of urban-rural integration is getting faster and faster, and farmers are paying more and more attention to the quality of the living environment. With a large rural population in my country, the discharge of domestic sewage is large, and the treatment is not timely, which leads to rural life. The environmental problems caused by sewage are becoming more and more prominent. [0003] At present, the rural sewage treatment technology has the following problems: 1. The operating load is low, and the actual influent volume and influent concentration are often significantly lower than the design value, often resulting in idle equipment, waste of investment, and di...

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Problems solved by technology

[0003] At present, the rural sewage treatment technology has the following problems: 1. The operating load is low, and the actual influent volume and influent concentration are often significantly lower than the design value, often resulting in idle equipment, waste of investment, and difficult operation; 2. Difficult maintenance, rural sewage treatment facilities Small in scale, large in number and highly dispersed, it is difficult to equip each site with enough professional operators, and the maintenance, repair and update of facilities and equipment will also be greatly restricted; The consumption and chemical consumption are often much higher than the large-scale municipal sewage treatment facilities; 4. The effluent TN, TP, SS and chromaticity indicators are difficult to pass, and the current mainstream treatment process still continues the design idea of ​​the activated sludge method for planning municipal sewage treatment facilities. Under the working conditions of low rural sewage influent water quality, it is difficult to achieve stable and qualified TN, TP, SS and chromaticity indicators; 5. Excess sludge, the process using traditional activated sludge principle will produce excess sludge, sludge Treatment and disposal is a problem for small, large numbers and remote rural wastewater treatment facilities

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