Anti-blocking ecological soil sewage treatment device

Abstract

The invention relates to an anti-blocking ecological soil sewage treatment device which consists of a treatment tank and a water distribution tank. The treatment tank is formed by underground digging or construction; anti-permeation layers are arranged at the bottom and the periphery of the treatment tank; a surface soil layer, a water distribution layer, a first biological filter chamber layer, a second biological filter chamber layer, a soil mixing layer and a gravel water discharging layer are arranged in the treatment tank from top to bottom; the water distribution layer, the first biological filter chamber layer and the second biological filter chamber layer form a three-stage water distribution system, so that the problems of soil blocking and non-uniform water distribution can be effectively solved; and a micro aeration system can increase redox potential of soil, prevent disintegration of a soil aggregation structure, is favorable for permeation movement of water in the soil and promotes decomposing of organics in the sewage by microorganisms. The anti-blocking ecological soil sewage treatment device has the advantages of novel design, reasonable structure, simplicity in maintenance, low manufacturing and running costs, uniformity in water distribution and high dirt-removing capacity and has the characteristics of low energy consumption, good treatment effect, low manufacturing cost, convenience in management and running and low treatment cost.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and relates to a sewage treatment device, in particular to an anti-clogging ecological soil sewage treatment device. Background technique [0002] As far as the applicant knows, the existing soil treatment sewage method is to pre-treat and separate the sewage containing solids, let the pre-treated sewage pass through the water pipe buried in the soil, soak and diffuse into the surrounding soil, The physical adsorption characteristics of soil and the decomposition of microorganisms are used to purify and treat sewage. Such a sewage treatment method is mainly applied on the infiltration bed composed of soil, and the sewage is infiltrated from top to bottom in the soil, and the soil that constitutes the infiltration bed is used to purify the sewage to achieve the purpose of treating various pollutants in the sewage. purpose of pollutant removal. [0003] The applicant found in the research that com...

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Problems solved by technology

[0005] Although the existing soil sewage treatment method has the above-mentioned advantages, it has not been able to be popularized on a large scale. This is because the problems encountered in its application cannot be well solved.

After research, the applicant found the reason why the problem could not be solved well. The main reason is that the application of the existing soil sewage treatment method to treat sewage has the problem of soil blockage that is difficult to solve, which leads to the existing soil treatment method after a period of use. The organic matter that cannot be completely decomposed in the sewage and the accumulation of polysaccharides produced by microbial decomposition gradually block the pores in the soil, affecting the air and water permeability of the soil. With the decrease of the air and water permeability of the soil, the oxidation of the soil The reduction potential also drops sharply, and finally the aggregate structure of the soil is destroyed, which intensifies the further clogging of the pores in the soil, so that the final treatment water cannot soak and flow evenly, reducing the purification effect of the soil, and even making it impossible to purify the sewage.

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