Black and odorous river sludge bottom modifier as well as preparation method and use method thereof

Abstract

The invention relates to a black and odorous river sludge bottom modifier as well as a preparation method and a use method thereof. The black and odorous river sludge bottom modifier is prepared by mixing the following raw materials in percentage by weight: 20%-40% of zeolite powder, 20%-40% of CaO, 1%-10% of CaSO4 or hydrate thereof, 1%-10% of Ca (NO3) 1, 1%-10% of KMnO4, 1%-10% of EDTA, 1%-10% of sodium peroxycarbonate, 10%-30% of PAC and 10%-20% of PAM, wherein the percentages add up to 100%. The calcium peroxide in the formula provides oxygen for the water body to improve the anoxic environment of the water body; and the zeolite powder is combined with polyaluminium chloride and polyacrylamide to adsorb and fix eutrophication substances such as ammonia nitrogen and total phosphorus, sothat the quality of overlying water is improved, the sediment environment is thoroughly changed, the propagation and growth of microorganisms and aquatic animals in the water body are promoted, and the ecological system of the water body is rapidly repaired. The novel black and odorous river sludge bottom modifier disclosed by the invention is wide in raw material source, low in price and remarkable in black and odorous water body treatment effect, and has good popularization and application prospects.

Description

technical field [0001] The invention relates to the technical field of black and odorous water body restoration, in particular to a bottom modifier for black and odorous river sludge and its preparation and use methods. 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 day by day. If these sewage are directly discharged into urban water bodies, the concentration of organic and inorganic pollutants will seriously exceed the standard, and there will be seasonal or year-round black and smelly water phenomena. The large-scale occurrence of black and odorous water bodies will not only cause the deterioration of the landscape effect of rivers and lakes, and the ecological environment problems will become increasingly prominent, but also the decline in water quality will increase the cost of sewage treatment and seriously affect urban developmen...

AI Technical Summary

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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