In-situ reduction or control method of sewage discharged from sewage discharge outlet

Abstract

The invention discloses an in-situ reduction or control method of sewage discharged from a sewage discharge outlet, and the in-situ reduction or control method comprises the following steps of: A, building a downstream filter tank and an upstream filter tank on a river/lake along the lower ends of the sewage discharge outlets of embankments; B, placing fillers to the filter tanks, and after 2-3 days, naturally growing microbes on the fillers to form biological membranes, wherein the sewage enters the downstream filter tank, flows through the filler from top to bottom, then reaches the bottom of the downstream filter tank and enters the filter tank through a water-permeable hole, and the sewage flows through the filler from bottom to top to degrade organic pollutants through the microbes positioned on the biological membranes; and filtering, absorbing and removing suspended materials contained in the sewage; C, planting aquatic plants on the surfaces of the filter tanks to achieve purification and landscape effects; and D, detaining the sewage, which is discharged from the sewage discharge outlet, in the filter tanks for 10-12 hours to reduce nitrogen, phosphorus and COD (Chemical Oxygen Demand), and overflowing treated clear water into the river from the tops of the filter tanks. The method disclosed by the invention is easy to carry out, simple to operate, low in cost, has good effect and is suitable for the in-situ control of the sewage discharged from the sewage discharge outlet of the lake into a riverway.

Description

technical field [0001] The invention relates to the field of water environment pollution control, and more specifically relates to an in-situ reduction or control method for sewage discharged from sewage outlets, especially suitable for in-situ control of sewage discharged from sewage outlets entering lakes and rivers, so as to reduce water entering lakes or rivers The purpose of nutrient loading. Background technique [0002] In recent years, due to the rapid development of industry, the rapid increase of population, the aggravation of urbanization, and the serious pollution of the environment, the degree of eutrophication in many water bodies in my country has intensified, causing serious water quality deterioration, directly affecting the quality and availability of water bodies, and endangering the quality of water bodies. Livestock and human health. Many lakes, bays, and rivers are seriously polluted. The water body is black and produces unpleasant odors, seriously affe...

AI Technical Summary

Problems solved by technology

However, in some places, industrial wastewater and urban domestic sewage are not directly discharged or treated incompletely into rivers or lakes after entering the sewage treatment through the pipe network, especially in the suburbs.

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