Modified fly ash material for in-situ endogenous pollution control of water body as well as preparation method and application of modified fly ash material

Abstract

The invention discloses a modified fly ash material for in-situ endogenous pollution control of a water body as well as a preparation method and an application of the modified fly ash material. The material is prepared from the following substances in percentage by mass: 35 to 70 percent of fly ash, 25 to 60 percent of montmorillonite, 0.1 to 2 percent of a polymerizing agent, 0.1 to 2 percent of distilled water and 0.1 to 1 percent of a modifying agent. The modified fly ash material disclosed by the invention is applied to a water body, has a good long-term effect of inhibiting the release of total phosphorus in sediments, continuously reduces the total phosphorus concentration of overlying water time by time, and is suitable for continuously treating the water body polluted by endogenous phosphorus.

Description

technical field [0001] The invention belongs to the technical field of solid waste comprehensive utilization and water pollution control, and specifically relates to a modified fly ash material used for in-situ endogenous pollution control of water bodies, a preparation method and an application. Background technique [0002] The internal source pollution of water has an important impact on the deterioration of water quality, and the release of endogenous phosphorus is an important reason for the eutrophication of many water bodies. The common control methods of internal source pollution of water include biological method, chemical method and physical method; however, the effect of controlling endogenous phosphorus pollution by a single method is not ideal. The biological method has low energy consumption and low cost, but it needs a long cycle, slow results, and the biomass is not easy to control and is greatly affected by environmental factors. The chemical method has qui...

AI Technical Summary

Problems solved by technology

Common water internal source pollution control methods include biological methods, chemical methods, and physical methods; however, the effect of controlling endogenous phosphorus pollution by a single method is not ideal

The biological method has low energy consumption and low cost, but it needs a long cycle, slow results, and the biomass is not easy to control and is greatly affected by environmental factors

The chemical method has quick results and high phosphorus removal effect, but it is prone to side effects and secondary pollution risks. After a long period of accumulation, it may cause harm to human health and the risk of destroying the ecological environment; the physical method is relatively simple and has high efficiency. Treatment efficiency, but the implementation cost is high and may be affected by the high price of materials; in summary, under the comparative study of various methods, the in-situ control of endogenous phosphorus at the interface through chemical adsorption and physical precipitation is a A more feasible method, provided that a new, cheap and efficient material can be produced

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