水资源与水工程学报Issue(3)：147-151,5.DOI:10.11705/j.issn.1672-643X.2014.03.30
沼液预处理最优混凝搅拌条件的研究
Study on optimal condition of coagulation and agitation in pretreatment of biogas slurry
摘要
Abstract
The optimal condition of pretreatment of biogas slurry by coagulation was researched in order to provide reference for the pretreatment of biogas slurry .The effects of coagulant tcchnique were evaluated according to the removal of COD , TN, TP, color and SS under laboratory conditions .The optimum tech-nological conditions were determined based on the single factor and orthogonal experiments .The results showed that in the conditions of which dosage of PAC is 4 g/L, dosage of PAM is 50 mg/L,stirring speed is 200 r/min,while PAC and PAM are added in stage of coagulation , the contents of COD, TN, TP, col-or and SS were decreased to 216.20, 181.99, 0.18, 11.77 and 71.67 mg/L respectively, the removal rate of COD, TN, TP, color and SS were reached to 92.51%, 88.85%, 99.75%, 98.37% and 89 .46%respectively ,which could completely meet the discharge standard of pollutants for livestock and poultry breeding ( GB18596-2001 ) , which can reduce the load of subsequent wastewater treatment and provide theoretical support for the practical treatment of biogas slurry .关键词
沼液/水污染/水处理/混凝工艺/污染物去除率Key words
biogas slurry/water pollution/water treatment/coagulation technique/removal rate of pol-lutant分类
资源环境引用本文复制引用
江晖,曾庆文,罗正维,胡龙志,耿文华,韦萍..沼液预处理最优混凝搅拌条件的研究[J].水资源与水工程学报,2014,(3):147-151,5.基金项目
国家科技支撑计划项目（2011BAD15B02）；863计划（2012AA021405）；省科技支撑计划项目 （）
