环境工程学报2026，Vol.20Issue(2)：403-414,12.DOI:10.12030/j.cjee.202505078
基于阳离子淀粉的富藻水絮凝处理及藻渣脱水
Cationic starch-based flocculation and dewatering for algae-rich water treatment
摘要
Abstract
Addressing the challenges of low efficiency,poor dewatering of algal residues,and difficulties in resource utilization during cyanobacterial bloom control,this study introduced 3-chloro-2-hydroxypropyltrimethyl ammonium chloride(CTA)to prepare cationic starch-based flocculants St-CTA(starch-grafted CTA)with different degrees of substitution.These flocculants were characterized using techniques such as FTIR,1H NMR,and Zeta potential.Using cyanobacterial water from Taihu Lake as a model,the flocculation performance and dewatering efficiency of algal residues were systematically evaluated for both standalone St-CTA and its combinations with inorganic coagulants(e.g.,CaO,AlCl3,CaCl2).The results showed that St-CTA3,with a cationic substitution degree of 39.67％,achieved removal rates of 95.6％,81.2％,and 67.31％for algal cells,turbidity,and A254,respectively,at a dosage of 100 mg·L-1,outperforming traditional flocculants.When combined with CaO,a synergistic effect was observed,achieving an A254 removal rate of 81.2％and significantly improving nutrient removal.The flocculants notably enhanced the dewatering performance of algal residues,achieving a dewatering rate of 36.7％,while maintaining good short-term stability in the environment and demonstrating favorable biodegradability under enzymatic action.Economic analysis indicated a treatment cost of only 0.82～1.23 RMB per ton of water,highlighting strong application potential.This study verifies the high efficiency,safety,and sustainability of cationic starch-based flocculants in cyanobacterial bloom control,offering a green and resource-oriented solution for water pollution management.关键词
阳离子淀粉基絮凝剂/蓝藻水华/絮凝/藻渣脱水/资源化利用Key words
cationic starch-based flocculant/cyanobacterial blooms/flocculation/dewatering of algal residues/resource utilization分类
资源环境引用本文复制引用
卢钒,边博,杨朕,柴瑞阳,杨涛,白文科,张康康,潘文秀,赵俭波,蔡的,张栩..基于阳离子淀粉的富藻水絮凝处理及藻渣脱水[J].环境工程学报,2026,20(2):403-414,12.基金项目
国家自然科学面上基金资助项目(52470008) （52470008）
江苏省自然科学基金杰出青年项目(BK20231519) （BK20231519）
江苏省青蓝工程优秀青年骨干教师项目(苏教师函〔2023〕27号) （苏教师函〔2023〕27号）
智力援疆创新拓展人才计划柔性援疆专家人才项目(新教函〔2025〕248号) （新教函〔2025〕248号）
新疆生产建设兵团南疆重点研发项目(2022DB025) （2022DB025）
