Method of replenishing water and controlling algae in large shallow lakes where water blooms accumulate

Abstract

The invention discloses a water supplement and algae control method for a large-scale shallow lake water bloom agglomeration water area. The method utilizes a water environment simulation technology, a soft enclosure technology and a dynamic monitoring and scheduling technology and comprises building a lake water environment analogy model, constructing soft enclosure engineering to form a desired water area, carrying out on-line monitoring on the desired water area, building a space-time high precision water environment analogy model of the desired water area, constructing a water quality neural network model and building a flow scheduling system of a water supplement river. The method is a systematic and quantitative technical system which utilizes a river flowing into lake to supply water for a large-scale shallow lake water bloom agglomeration water area so that algal density is controlled. The method builds a defined quantification relationship between supplement water amount and quality and water quality response of a desired water area so that quantitative water environment in the water resource scheduling system is realized, and the problem that the existing water diversion-based alga control engineering measures cannot form a quantitative technical solution so that alga control effects are uncertain or unconspicuous is solved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, in particular to the technical field of water body pollution control. Background technique [0002] Large shallow lakes generally refer to areas larger than 50 km 2 Lakes with an average water depth less than 6m. For large shallow lakes with eutrophication, the spatial distribution of algae is not uniform, and they will be driven by wind and lake currents to migrate and gather. Therefore, wind force and direction become the main reason for the occurrence of local severe algal blooms. In Meiliang Bay in the northern part of Taihu Lake in my country and Haigeng Park in the northern part of Dianchi Lake, severe algal blooms are formed due to the accumulation of cyanobacteria under the action of prevailing winds. [0003] At present, the main methods for controlling cyanobacterial blooms in lakes are: chemical, physical, biological, and nutrient load control methods. [0004] Chem...

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Problems solved by technology

[0011] The technical problem to be solved by the present invention is to change the subjective experience of algae control in large and medium-sized shallow lakes with water replenishment by river channels, and to solve the insignificant and uncertain effect of water replenishment and algae control projects in water areas where algae blooms accumulate It aims to make the algae control implemented in the algae accumulation area of ​​large and medium-sized shallow lakes by means of river replenishment become an environmental protection water conservancy project that can be quantified and standardized.

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