改性粉煤灰处理含磷生活污水试验  

Study on removal of phosphorus from domestic wastewater by modified fly ash

作　　者：李鹏[1] 王伟 侯长容 

机构地区：[1]重庆工商大学环境与生物工程学院,重庆400067 [2]重庆市永川区环境保护局,重庆402168

出　　处：《水资源保护》2011年第3期65-68,共4页Water Resources Protection

摘　　要：为了防止水体富营养化和有效处理生活污水,以改性粉煤灰为吸附剂,对含磷生活污水进行吸附脱磷试验,并研究粉煤灰粒径、投加量、pH值、温度、振荡强度以及吸附时间等因素对脱磷效果的影响。结果表明：在粉煤灰粒径为160~200目、投加量为25 g/L、溶液pH值为3.5、水温为50℃的条件下,对磷质量浓度为6.8 mg/L的生活污水,以140 r/min的强度振荡吸附150 min,磷的去除率可高达95.3%,水样中的磷质量浓度降至0.5 mg/L以下。To prevent eutrophication and to treat domestic wastewater effectively,the experiment of removing phosphorus from domestic wastewater was carried out using modified fly ash as an absorbent.The effects of fly ash size,fly ash dosing quantity,pH value,temperature,oscillating strength and adsorption time were studied.The results showed that when the fly ash size ranged from 160 mesh to 200 mesh,the fly ash dosing quantity was 25 g/L,pH value was 3.5,the temperature was 50℃,the concentration of phosphorus in the domestic wastewater was 6.8 mg/L,the oscillating strength was 140 r/min,and the adsorption time was 150 minutes,the removal efficiency of phosphorus could reach 95.3% and the concentration of phosphorus could reduce to 0.5 mg/L.

关 键 词：改性粉煤灰 吸附 含磷生活污水 去除率 

分 类 号：X703[环境科学与工程—环境工程]