Recycling comprehensive treatment method for endogenous pollution of substrate sludge of lake

Abstract

The invention relates to a recycling comprehensive treatment method for endogenous pollution of substrate sludge of a lake. According to the self purification ability of the lake and the input / output quantity of a pollutant, the polluting substrate sludge deposited at the bottom of the lake is dug up, thereby eliminating the residual pollutant exceeding the self purification ability and realizing the purification of the lake according to the self purification ability of the lake. The polluting substrate sludge in the lake is treated and recycled by adopting the following treatment modes of: (1) digging the polluting substrate sludge in the lake; (2) eliminating a heavy-metal pollutant in the slurry of the polluting substrate sludge; (3) eliminating a toxic organic pollutant in the slurry of the substrate sludge of which the heavy metal content reaches the standard; and (4) recycling the substrate sludge after the heavy-metal pollutant and the toxic organic pollutant are treated. By treating the lake with the endogenous pollution of the substrate sludge with the method, most of the endogenous pollutant inside the lake can be removed, the release of the pollutant of the substrate sludge to a water body is reduced, the pollution of the water body is fundamentally solved, and the balance of an ecological system is effectively maintained.

Description

technical field [0001] The invention relates to a lake pollution control method, in particular to a comprehensive resource recovery method for endogenously polluted lakes caused by bottom mud. Background technique [0002] At present, most of the lakes in China and around the world are polluted to varying degrees due to the influx of agricultural sewage from surrounding agricultural irrigation areas, surrounding urban sewage, garbage, rural surface runoff, and industrial wastewater, resulting in serious water chemical pollution and mineralization. The degree of eutrophication is getting higher and higher, and the eutrophication is serious, causing the rapid spread of aquatic plants, and the lake surface is almost completely filled with submerged plants. After the aquatic plants decay and sink, they will cause a strong biological silting effect, which will accelerate the rise of the lake bottom and accelerate the process of lake swamping. , the fish resources and bird resourc...

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Problems solved by technology

[0004] In order to solve the above-mentioned defects in the prior art, the object of the present invention is to provide a resource-based comprehensive treatment method for endogenous pollution of lake sediments, through which the pollutants in lake sediments can be removed, and the endogenous sources of polluted water bodies can be removed. , reduce the release of sediment pollutants to the water body, and at the same time effectively solve the problem of the whereabouts of the polluted sediment and prevent secondary pollution

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