摘要
利用国内研究较多的生物陶粒滤池预处理工艺 ,在我国北方某水库原水中添加微量的磷 ,考察磷对生物预处理的促进作用 .通过生物分析方法 ,发现在原水水样中添加 5 0 μg/L的PO3 - 4 P(NaH2 PO4 )后 ,可以促进原水中细菌的生长 ,BDOC也有所增加 ,证明了原水中磷对细菌生长的限制因子作用 .陶粒滤池的实际运行结果表明 ,对于本试验所用原水 ,添加 2 5 μg/L的PO3 - 4 P(H3 PO4 )后 ,生物陶粒滤池对水中CODMn的去除率平均提高 4 7个百分点 ,UV2 5 4和TOC的去除率分别提高 3 6和 5 7个百分点 .由此为提高生物预处理的运行效果提供了一个新的思路 ,也说明磷在饮用水中的作用需要引起重视 .
Addition of phosphorus as a novel way to improve the performance of bio-ceramic filter for biological pretreatment of source water was conducted. More bacteria grown in raw water and the BDOC of raw water increased when 50μg/L PO 3- 4-P (NaH 2PO 4) was added alone were clear evidence of phosphorus limitation on bacterial growth. It shown that about 4.7%, 3.6% and 5.7% more of COD Mn, UV254 and TOC from the raw water investigated in the experiment on the average was removed respectively when 25μg/L PO 3- 4-P (H 3PO 4) was added to the influent of bio-ceramic filter. The role of phosphorus in raw water and drinking water should be paid more attention.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2003年第5期81-85,共5页
Environmental Science
基金
科技部
水利部重大科技项目 (95 5 0 6 10 40 0 0 5 0 3)
关键词
生物预处理
生物陶粒滤池
磷
细菌再生长潜力
BDOC
biological pretreatment
bio-ceramic filter
phosphorus
bacterial regrowth potential
BDOC
