Ecological pit-type treatment method for black and odorous water body

Abstract

The invention discloses an ecological pit-type treatment method for a black and odorous water body. Firstly, exogenous solid-liquid contaminants are prevented from entering the polluted black and odorous water body, the solid contaminants in the water body are primarily removed through manual operation or mechanical fishing, a mud-water separating material is added into the black and odorous waterbody of a lake to improve the transparency of the water body, and illumination energy is provided for growth and propagation of microorganisms; then, porous biological carriers are put into a bottomsludge layer of the water body through the modes of pit digging, net pipe arranging or bottom mud structures, and biological oxidation materials are added and injected in the targeting direction of the bottom sludge layer to activate the microorganism metabolism environment of the bottom mud. The ecological pit-type treatment method is mainly applied to treatment on the black and odorous water body, can rapidly improve the water body and the black and odorous phenomenon of the bottom mud, optimizes the microorganism metabolism environment of the bottom mud, realizes in-situ degradation withoutsludge removal, effectively stops the bottom mud from floating, and promotes biological degradation of COD / NH3-N / TP.

Description

technical field [0001] The invention relates to an ecological pit type black and odorous water treatment method, which belongs to the technical field of sewage treatment. Background technique [0002] With the continuous improvement of my country's urbanization level, the increasing urban population, and the continuous development of industry and agriculture, although the domestic sewage and industrial sewage produced by it have been treated, a large amount of organic pollutants are continuously discharged into lakes or rivers, making rivers and lakes unable to Self-purification, serious water pollution, and even seasonal or year-round black odor. From the analysis of the characteristics of black and odorous water bodies, the content of oxygen-consuming pollutants in water bodies increases, resulting in severe anoxic water bodies, and anaerobic microorganisms digest organic pollutants and produce a large amount of malodorous gases (such as hydrogen sulfide, amines, ammonia an...

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Problems solved by technology

However, a single method often cannot achieve the desired effect, and these technologies also have various problems such as low efficiency, time-consuming, high cost, and large space occupation.