Synthesis method of modified sandy soil flocculation material for repairing lakes and reservoirs

Abstract

The invention provides a synthesis method of a modified sandy soil flocculation material for repairing lakes and reservoirs. The synthesis method is characterized in that natural crab shells, shrimp shells, sand and soil are adopted as raw materials to be synthesized into the modified sandy soil flocculation material; the modified sandy soil flocculation material is a dry powder material and is convenient for transport, preservation and use; the modified sandy soil flocculation material can be dissolved rapid in water; and the modified sandy soil flocculation material can be diluted by a certain amount of water and then is sprayed directly in water needing to be treated so that algal bloom flocculation treatment is realized.

Description

Technical field: [0001] The invention belongs to the technical field of lake eutrophication control and algae bloom removal. Background technique: [0002] In recent years, the present inventors have proposed a series of methods and patented technologies regarding algal bloom control. In 2002, Pan Gang et al. proposed a technology for modifying clay with natural polymers (application number: 02155284.3, authorized), which can modify any local soil or sediment into an efficient algae flocculant , thus making it possible to use local soil to control local water blooms (Pan, G. et al., Environmental Pollution, 2006, 3 consecutive papers). In 2005, Pan Gang et al. combined modified clay coagulation algae removal technology with ecological methods, and proposed a composite material (modified clay and aquatic plant seeds or roots) that can quickly remove algal blooms and convert algal blooms into submerged vegetation at the bottom of the water. Lumps) technology solves the probl...

AI Technical Summary

Problems solved by technology

In 2005, Pan Gang et al. combined modified clay coagulation algae removal technology with ecological methods, and proposed a composite material (modified clay and aquatic plant seeds or roots) that can quickly remove algal blooms and transform algal blooms into submerged vegetation at the bottom of the water. Lumps) technology solves the problems of high cost of chemical sediment phosphorus fixation, difficulty in determining ecological security and unstable phosphorus fixation effect (application number: 200510099736.X)

In fact, under what technological conditions can the natural chitosin contained in crab shells and shrimp shells be converted into how many algae flocculation modifiers with bridging and netting functions, how to control their molecular weight, especially how these modifiers are The material that interacts with natural sand and soil to form flocculated and settled algal cells is very complicated and generally unknown to professionals

At present, there is no report showing how a large amount of sand and soil particles affect the synthesis mechanism of chitosan, how to affect the size of its molecular weight, especially how to wrap chitosan molecules with specific molecular weight on the surface of sand and soil particles to form Modified sand dry powder material with algae flocculation function

At present, there is no public information or technical description on how to produce modified sand and soil materials with algae flocculation function from natural crab shells, shrimp shells, sand, soil and other raw materials.