污染控制技术及原理
郝晓地,戴吉,胡沅胜,张向平.控制BNR工艺厌氧释磷效果因素的实验研究[J].环境科学学报,2008,28(9):1771-1776
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
- 基金项目：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)
- 作者
- 单位
- 郝晓地
- 北京建筑工程学院可持续环境生物技术研发中心, 北京 100044
- 戴吉
- 北京建筑工程学院可持续环境生物技术研发中心, 北京 100044
- 胡沅胜
- 北京建筑工程学院可持续环境生物技术研发中心, 北京 100044
- 张向平
- 北京建筑工程学院可持续环境生物技术研发中心, 北京 100044
- 摘要：以实验室动态生物营养物去除(BNR)工艺——BCFS(Biologisch Chemische Fosfaat Stikst of Verwijdering)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.
- Abstract：Anaerobic P-release directly controls the total effect of bio-Premoval 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 3h was less than with acetate and propionate.The final amount of Preleased 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 3h with acetate was half of that required with propionate.
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