Environmental functional material for emergency control of black water cluster

Abstract

The invention discloses an environmental functional material for emergency control of black water cluster. The material comprises the following components in percentage by mass: 65 to 85 percent of diatomite, modified diatomite, bentonite, modified bentonite, attapulgite, modified attapulgite, kaolin, modified kaolin, modified sepiolite, clay and / or modified clay, 14 to 30 percent of sodium percarbonate and 1 to 5 percent of chitosan. The material has the advantages of convenient use and good treatment effect and can be used independently or matched with other water treatment agents. The produced floccule has a large particle size and dense structure; the settling time is shortened; and the material can effectively improve the indexes such as COD, ammonia nitrogen, phosphorus, chrominance, peculiar smell and the like of a water body. The material is difficult to produce secondary pollution. The required equipment is simple and the operation is convenient, so the material is applicable for the emergency treatment of the black water cluster.

Description

technical field [0001] The invention relates to emergency control technologies such as fast flocculation, adsorption, precipitation, disinfection, deodorization, and purification of lake flooding (black water mass) in water bodies, specifically a multi-functional emergency control technology for lake flooding (black water mass) Environmentally friendly material. Background technique [0002] Lake flooding means that algae gather, die, and rapidly consume oxygen to rot and decompose in large quantities on the shores of lakes, estuaries, and lake branches. The phenomenon that the color deepens or even appears black, and emits a bad smell. [0003] Black and smelly sewage clusters often appear in lake areas with severe lake flooding. The sewage clusters are diluted and diffused with the flow of water bodies, and the color gradually becomes lighter and eventually returns to normal. The duration of lake flooding is about 5-10 days. Although its duration and impact are not long,...

AI Technical Summary

Problems solved by technology

However, compared with algae-enhanced flocculation technology, conventional organic or inorganic flocculant-modified clay or natural minerals have better flocculation and settlement performance for "water blooms", but the hazards of lake flooding (black water mass) are mainly reflected in Low dissolved oxygen concentration and odor, the enhanced flocculation exhibited by organic or inorganic flocculant modified clay or natural minerals is not obvious for improving dissolved oxygen and odor removal in water