原水输送管道生物净水效能  

Biological purification efficiency in raw water delivery pipelines

作　　者：杨艳玲[1] 张达[1] 李星[1] 相坤[1] 刘扬阳[1] 

机构地区：[1]北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京100124

出　　处：《哈尔滨工业大学学报》2014年第10期106-109,116,共5页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(51178003);北京市自然科学基金资助项目(8122013)

摘　　要：为提高长距离输水管道输送水质,研究原水输送管道生物净水效能的形成过程,采用实验室配水,利用管道模拟反应器模拟原水输送管道,连续检测进、出水水质以及生物膜中微生物的数量随时间的变化.结果表明：原水输送管道生物净水效能的形成过程中,氨氮（NH4^＋-N）和有机物等的去除均是先逐渐增大后趋于稳定,且稳定值相比最大值稍有下降;管道模拟反应器在运行45 d后生物膜达到稳定,对NH4＋-N的去除率稳定在75%左右,出水亚硝酸氮（NO2--N）质量浓度稳定在0.02 mg/L左右;输水管道中,氨氧化菌（AOB）相比亚硝化细菌（NOB）是优势菌种;管道模拟反应器对UV254和浊度的去除率均稳定在30%左右;管道模拟反应器对正磷酸盐（PO4^3-）的去除率维持在13.64%~38.78%.Study on formation process of biological purification efficiency in raw water delivery pipelines was beneficial to improve water quality in long distance raw water delivery pipes. Using simulated pipeline reactors to simulate water situation in raw water delivery pipelines, and water samples were prepared in laboratory. The influent and effluent water quality, the microorganisms in the biofilm is continuously monitored. Results show that the ammonia nitrogen （NH4^＋-N） and organic matter removal are stabilized after a gradual increase in first, and stable value decreases slightly compared to the maximum in the formation process of biological purification efficiency. Biofilm grow on polyethylene slides in simulated pipeline reactor and then harvest within 45 days, the removal rate of NH4＋- N remains stable at 75%. Nitrite nitrogen （NO2--N） effluent concentration remains stable at 0. 02 mg/L. Ammonia oxidizing bacteria （AOB） is dominant strain compared to nitrite oxidizing bacteria （NOB） in raw water delivery pipes. Removal rate of UV254 and turbidity are about 30%, and orthophosphate （PO4^3- ） removal rate ranges from 13.64% to 38.78%.

关 键 词：原水 输水管道 生物膜 净水效能 

分 类 号：TU991[建筑科学—市政工程]