Cofferdam type micro-nano molecular sieve algal water treatment system for in-situ collection of cyanobacterial blooms

Abstract

The invention relates to a cofferdam type micro-nano molecular sieve algae-water co-treatment system for collecting cyanobacterial bloom in situ, and belongs to the field of sewage treatment. The system comprises an in-situ cofferdam-type algae-water pretreatment system and a revetment algae-water co-treatment system. The cofferdam type micro-nano molecular sieve algae-water co-treatment system has the characteristics of short construction period, remarkable investment and running economy, high pollutant removal efficiency, quick water ecology restoration effects, acceleration of water flow, improvement on water power and the like specific to water environment treatment and exogenous water transfer; by adopting the cofferdam type micro-nano molecular sieve algae-water co-treatment system,a large volume of purified high-quality water body is supplemented while pollution load is removed, and combination of pollution control and water supplement is realized truly.

Description

technical field [0001] The invention relates to a system for treating algae and water together, in particular to a cofferdam type micro-nano molecular sieve system for treating algae and water in situ, and belongs to the field of water environment and sewage treatment. Background technique [0002] With decades of reform and opening up, China’s industrialization and rapid urban development have led to increasingly serious pollution of lakes, reservoirs, and ponds. Among the 26 key lakes and reservoirs in the country, 78.6% of the key lakes have eutrophication in varying degrees from Class IV to Inferior V Among them, the environmental pressure of 6 lakes in Class II to III is gradually increasing, and the prospect is not optimistic. [0003] For surface natural lakes, reservoirs, and ponds, stable and high-quality exogenous recharge water bodies gathered from a wide range of natural basins are the guarantee for the health of lakes, reservoirs, and ponds. Long-distance water...

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Problems solved by technology

[0003] For surface natural lakes, reservoirs, and ponds, stable and high-quality exogenous recharge water bodies gathered from a wide range of natural basins are the guarantee for the health of lakes, reservoirs, and ponds. Long-distance water diversion is actually not advisable. Although water diversion can use a large number of clean water sources to dilute the pollution factors of eutrophic water bodies, it is unfavorable for severe eutrophic lakes and reservoirs with high pollution loads, insufficient hydropower, and low environmental capacity. There is a significant improvement effect, but the use of clean water to improve lakes and reservoirs is a great waste of water resources, and the investment in water conservancy projects and water use costs are extremely high, which is really unacceptable

[0004] Aiming at the outbreak of cyanobacterial blooms, which are typical characteristics of major lakes after eutrophication, we have conducted long-term applied research, by observing the eutrophication factor dilution model and According to the hydrodynamic model, the implementation of large-scale "algae and water treatment" for eutrophic lake water is extremely important to curb the continuous decline in lake water quality. Large-scale surface eutrophic natural lakes and ponds generally have large water areas and water volumes Due to the characteristics of large scale and complex natural environment, the treatment technology for the endogenous pollution of lakes was single and the effect was limited.

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