Method for preparing flocculent for treatment of chitosan water

Application Number: 00109435
Application Date: 2000.06.23
Publication Number: 1280104
Publication Date: 2001.01.17
Priority Information:
International: C02F1/56
Applicant(s) Name: Qinghua Univ.
Inventor(s) Name: Yu Gang;Feng Zhiwei;Zhang pengyi
Patent Agency Code: 11201
Patent Agent: luo wenqun
Abstract A water-treatment flocculant chitosan product is prepared with shrimp and crab shell and through the process including the steps of eliminating inorganic salt, solid-liquid separation, and stoving to obtain intermediate product without inorganic salt; eliminating protein, solid-liquid separation, and stoving to obtain chitin; and eliminating acetyl group to, solid-liquid separation and stoving to obtain solid grains as the product of water-treatment flocculant. The invented product has fast precipitation speed of flocculate, good dewatering effect, complete final treatment, and no secondary pollution.