Black-odorous river sludge bottom modifier and preparation and use method thereof

Abstract

The present invention relates to a black and odorous river sludge bottom modifier and its preparation and use methods. The black odorous river sludge bottom modifier is formed by mixing the following raw materials by weight: zeolite powder 20%-40%, CaO 2 20%-40%, CaSO 4 or its hydrate 1%-10%, Ca(NO 3 ) 2 1%‑10%, KMnO 4 1%‑10%, EDTA 1%‑10%, Sodium Percarbonate 1%‑10%, PAC 10%‑30%, PAM 10%‑20%, total 100%. The calcium peroxide in the formula provides oxygen to the water body and improves the oxygen-deficient environment of the water body; the zeolite powder combines with polyaluminum chloride and polyacrylamide to adsorb and fix eutrophic substances such as ammonia nitrogen and total phosphorus, improve the quality of the overlying water, and completely change the The sediment environment can promote the reproduction and growth of microorganisms and aquatic animals in the water body, so as to quickly restore the water body ecosystem. The novel black and odorous river sludge bottom modifier of the invention has a wide range of raw materials and low price, and the utilization of the novel black and odorous river sludge has a remarkable effect in treating black and odorous water, and has a good prospect of popularization and application.

Description

technical field [0001] The invention relates to the technical field of restoration of black and odorous water bodies, in particular to a black and odorous river sludge bottom modifier and a preparation and use method thereof. Background technique [0002] With the rapid development of my country's economy and the rapid expansion of cities, the discharge of industrial wastewater and domestic sewage is increasing. If these sewage are directly discharged into urban water bodies, the concentration of organic and inorganic pollutants will seriously exceed the standard, resulting in seasonal or year-round black and odorous water bodies. The large-scale appearance of black and odorous water bodies will not only cause the deterioration of river channels and lake landscapes, and the increasingly prominent ecological and environmental problems, but also the decline of water quality will increase the cost of sewage treatment, which will seriously affect urban development. Therefore, t...

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Problems solved by technology

[0005] As far as the current research status at home and abroad is concerned, the ex-situ restoration technology of sediment is limited due to problems such as large engineering volume, high cost, and difficult treatment of dredged sediment. The in-situ restoration technology of sediment has a good prospect, but the single original It is usually difficult to achieve efficient sediment treatment with remediation agents

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