Lake cyanobacteria scavenger mainly comprising natural mineral

Abstract

The invention relates to a lake cyanobacteria scavenger mainly comprising a natural mineral. Volcanic ash powder as the natural mineral is taken as the main component, a flocculant, a bactericide and an oxidizing agent are added and mixed, and the lake cyanobacteria scavenger is prepared. 100 g of the lake cyanobacteria scavenger is added to every cubic meter of water and is stirred or stirred with natural water force, the water becomes clear and transparent after 8 hours, and a large quantity of harmful substances is removed. Different use amounts of the scavenger are adopted according to different types of lakes, and lake water polluted by cyanobacteria is treated more scientifically and more reasonably. The natural volcanic ash powder has more excellent performance after activation and has higher pollution element adsorption capacity and exchange capacity. After reasonable and scientific blending, the scavenger has better capacity for directly adsorbing ammonia, nitrogen, phosphorus, arsenic and other heavy metal elements in eutrophic water when in water and has better pollutant removal effect; one efficient, fast, labor-saving and treating-cost-saving method is provided for physical and chemical treatment of lake eutrophication, and secondary pollution is avoided.

Description

technical field [0001] The invention relates to a lake cyanobacteria purifying agent based on natural mineral volcanic ash, and a physical and chemical treatment method for directly adsorbing and purifying eutrophic water bodies of lakes. Background technique [0002] Volcanic ash is a co-product of volcanic rocks, which is a non-metallic mineral, mainly calcium silicate minerals of calcium, sodium, barium, and potassium. Volcanic ash is a natural and cheap mineral, and its structure is a calcium-aluminum frame structure Silicate crystal, containing many holes and channels inside. Volcanic ash has a huge specific surface area (550-930m 2 / g), and the balance cations on the volcanic ash framework are not tightly combined with the framework, so it is easy to exchange with the cations in the water, so the volcanic ash has good adsorption and exchange properties. Its composition is Na[A1Si2]·H2O, its specific gravity is 2.2-2.4cm3, and it is light gray and light red. Natural ...

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Problems solved by technology

[0003] At present, my country's water resources are short, water resources are seriously polluted, and the scope of polluted water sources is expanding and showing an upward trend. Lake eutrophication is the main problem facing lake water pollution in my country. Agricultural pollution, industrial pollution, and urban domestic sewage discharge, They all endanger the water safety of our country's major rivers and lakes. The water quality of many rivers and lakes has deteriorated. The eutrophication in Dianchi Lake in Yunnan, Taihu Lake in Jiangsu, and Chaohu Lake in Anwei is relatively serious. It has been treated for more than 20 years and has cost hundreds of billions. Did not meet the third category of surface water standards