控制BNR工艺厌氧释磷效果因素的实验研究  

Experimental study on factors controlling anaerobic P-release

作　　者：郝晓地[1] 戴吉[1] 胡沅胜[1] 张向平[1] 

机构地区：[1]北京建筑工程学院可持续环境生物技术研发中心,北京100044

出　　处：《环境科学学报》2008年第9期1771-1776,共6页Acta Scientiae Circumstantiae

基　　金：国家高技术研究发展计划(863)项目(No.2006AA06Z320);北京市属市管高等学校人才强教计划资助项目(No.BJE10016200611);北京市自然科学基金项目(No.8063028)~~

摘　　要：以实验室动态生物营养物去除(BNR)工艺——BCFS(Biologisch Chemische Fosfaat Stikst of Verw ijdering)运行实验为基础,采用静态实验方法,研究了初始COD、碳源种类和厌氧释磷反应时间对厌氧释磷效果的影响.实验结果表明,初始COD越高,释磷速率和总释磷量越高.当碳源充足且反应时间足够长时,释磷速率不受初始COD和碳源种类影响,单位质量污泥(VSS)的VFAs利用率只要维持在0.04g.h-1(3h内)即可获得满意的释磷效果.以葡萄糖为碳源时,经过3h厌氧反应的释磷量低于乙酸与丙酸2种碳源;与丙酸相比,在相同初始COD下乙酸最终诱发的释磷量虽然不及丙酸,但在3h内诱发相同的释磷量乙酸所需要的反应时间仅为丙酸的1/2.Anaerobic P-release directly controls the total effect of bio-P removal in biological nutrient removal（BNR）processes.Based on a lab-scale BNR process（BCFS）,batch experiments were applied to study the effects of initial COD concentrations,carbon sources and HRT on anaerobic P-release.The results from batch experiments indicate that P-release increased with increasing influent COD.The average rates of P-release were not affected by initial COD concentrations if the anaerobic HRT was sufficient.The P-release effect was good as long as the rate of uptake of volatile fatty acids（VFAs）per unit of sludge（VSS）was above 0.04 g · h^-1.With glucose used as carbon source,anaerobic P-release within 3 h was less than with acetate and propionate.The final amount of P released in the presence of acetate was lower than that released with propionate,but the reaction time（HRT）required to reach the same amount of P-release within 3 h with acetate was half of that required with propionate.

关 键 词：厌氧释磷 碳源 COD 反应时间 释磷速率 聚磷菌(PAOs/DPB) 

分 类 号：X171[环境科学与工程—环境科学]