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.
出处
《水资源保护》
CAS
2011年第3期65-68,共4页
Water Resources Protection
关键词
改性粉煤灰
吸附
含磷生活污水
去除率
fly ash
modification
adsorption
domestic wastewater containing phosphorus
removal efficiency