Method for purifying black and odorous water in riverway

Abstract

The invention discloses a method for purifying black and odorous water in a riverway. The method comprises the following steps: suspending a floating aeration device on a riverway section at a downstream position of the riverway by adopting a PVC rope; suspending a composite ecological filler on the PVC rope stretching across the riverway, wherein the composite ecological filler is formed by combining a suspended ball filler and light ceramsite; planting emergent aquatic plants and submerged plants at the position where the composite ecological filler is arranged according to different water depths; and piling fish reefs suitable for inhabitation of fishes, shrimps, shellfishes and crabs on the two sides of the part, located at the composite ecological filler, of the bottom of the riverwayfrom the composite ecological filler. The method has the following beneficial effects that the composite ecological filler is hung and transversely pulled on the section of the riverway through the PVC rope, and the emergent aquatic plants and the submerged plants are planted in the riverway to enhance water purification effect and improve the self-purification capacity of the riverway; an ecological system of the riverway is gradually restored through gradual improvement of a food chain; and the black and odorous water body of the riverway can be aerated and oxygenated, so the dissolved oxygen concentration of a water body is improved, and the habitat conditions of the water body are improved.

Description

technical field [0001] The invention relates to the technical field of ecological management, in particular to a method for purifying black and odorous water in river courses. Background technique [0002] Formed with economic and social development, black and odorous water bodies have become a typical water environment problem. The cause is generally that untreated domestic sewage, industrial wastewater, and precipitation surface runoff around the water body are directly discharged into the water body for a long time, which makes the pollutants in the water body constantly. Accumulation, exceeding the self-purification capacity of the water body, after the dissolved oxygen in the water body is exhausted, under anoxic and anaerobic conditions, metal ions such as iron and manganese in the water body and sulfur ions in the water form compounds such as ferrous sulfide and manganese sulfide. As time goes by, the suspended matter adsorbs ferrous sulfide, manganese sulfide, etc., ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned technical problems in the related art, the present invention proposes a method for water quality purification of black and odorous water bodies in river courses, which can solve the problems of small-scale stagnant water bodies without sewage interception conditions, closed and semi-closed water bodies in the treatment process, and the water quality near the water bodies. Placement of water treatment equipment conditions, difficulty in maintaining water quality, etc.

Images