混凝预处理农村灰水中LAS的试验研究
Experimental Study on Coagulation Pretreatment of LAS in Rural Grey Water
邢佳宇 1张吉库1
作者信息
- 1. 沈阳建筑大学市政与环境工程学院,辽宁 沈阳 110168
- 折叠
摘要
试验以农村灰水为研究对象,采用混凝预处理的方式降解农村灰水中的阴离子表面活性剂(LAS),选择无机混凝剂降解LAS,从聚合氯化铝(PAC)和聚合氯化铁(PFS)两者中筛选出PAC作为试验混凝剂.采用单因素影响试验,讨论混凝剂PAC投加量、助凝剂PAM投加量、灰水pH和静沉时间对灰水中LAS去除率的影响.当PAC投加量为 40～55 mg/L、PAM投加量为 2.5 mg/L、灰水pH为7～8、静沉时间为15 min时,出水LAS浓度最低可达4.86 mg/L,满足回用要求.
Abstract
The experiment took rural grey water as the research object,and used coagulation pretreatment to degrade anionic surfactants(LAS)in rural grey water.Inorganic coagulants were selected to degrade LAS,and PAC was selected from polyaluminum chloride(PAC)and polyferric chloride(PFS)as the experimental coagulant.Using a single factor influence experiment,discussed the effects of coagulant PAC dosage,coagulant aid PAM dosage,grey water pH,and settling time on the removal rate of LAS in grey water.When the dosage of PAC was 40～55 mg/L,the dosage of PAM was 2.5 mg/L,the grey water pH was 7～8,and the static settling time was 15 min,the minimum concentration of LAS effluent could reach 4.86 mg/L,which could meet the requirements for reuse.
关键词
混凝/阴离子表面活性剂/农村灰水/聚合氯化铝Key words
coagulation/anionic surfactant/rural grey water/polyaluminum chloride引用本文复制引用
出版年
2024
NETL
NSTL
万方数据