Cofferdam type micro-nano molecular sieve algae-water co-treatment system for collecting cyanobacterial bloom in situ

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 an algae water treatment system, in particular to a cofferdam type micro-nano molecular sieve algae water treatment system for collecting cyanobacteria blooms in situ, which belongs to the field of water environment and sewage treatment. Background technique [0002] With the industrialization and rapid urban development in the past decades of reform and opening up, China has caused increasingly serious pollution of lakes, reservoirs, and ponds. Among the 26 key lakes and reservoirs in the country, 78.6% of the key lakes are in the eutrophication category to varying degrees. Among these lakes, the environmental pressure of 6 lakes in Category II to III is increasing, and the prospects are not optimistic. [0003] For surface natural lakes, reservoirs, and ponds, stable and high-quality exogenous recharge water bodies from a wide range of natural basins are the guarantee for the health of lakes, reservoirs, and ponds. However, in terms...

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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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