多因素对反硝化除磷过程中COD、N和P的去除分析

doi:10.11949/j.issn.0438-1157.20141549

化工学报 ›› 2015, Vol. 66 ›› Issue (4): 1467-1475.DOI: 10.11949/j.issn.0438-1157.20141549

多因素对反硝化除磷过程中COD、N和P的去除分析

王聪, 王淑莹, 张淼, 彭永臻, 曾薇

北京工业大学北京市污水脱氮除磷处理与过程控制工程技术研究中心, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124

收稿日期:2014-10-15 修回日期:2014-12-29 出版日期:2015-04-05 发布日期:2015-04-05
通讯作者: 王淑莹
作者简介:王聪(1989-),女,硕士研究生。
基金资助:
国家高技术研究发展计划项目(2012AA063406);科研基地建设-科技创新平台。

Analysis of COD, N and P in denitrifying phosphorus removal under multivariate condition

WANG Cong, WANG Shuying, ZHANG Miao, PENG Yongzhen, ZENG Wei

Engineering Research Center of Beijing, Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China

Received:2014-10-15 Revised:2014-12-29 Online:2015-04-05 Published:2015-04-05
Supported by:
supported by the National High Technology Research and Development Program of China (2012AA063406) and the Scientific Research Base and Scientific Innovation Platform.

摘要/Abstract

摘要：

以A²O-生物接触氧化(BCO)工艺系统反硝化除磷活性污泥为研究对象,应用Central Composite Design(CCD)设计考察了起始COD浓度、硝酸盐氮浓度、反应温度和缺氧反应时间对反硝化除磷反应的3个响应值COD去除率(Y_cod)、N去除率(Y_n)和P去除率(Y_p)的影响。结果表明,起始COD对反硝化除磷反应中COD、N和P的去除都有重要影响,且缺氧反应时间对Y_n有较大影响,反应温度对Y_p有很大影响;3个响应值的模型方程均显著,R²分别为0.9853、0.9118和0.9972;当COD为316.95 mg·L^-1、硝酸盐氮为42.26 mg·L^-1、反应温度为27.19℃、缺氧反应时间为237.37 min时,Y_cod、Y_n和Y_p的模型预测值分别为93.54%、99.96%和99.56%,试验响应值分别为92.03%、91.15%和81.64%

关键词: 反硝化除磷, 响应面, COD, 硝酸盐氮, 温度, 缺氧反应时间

Abstract:

The optimal removal efficiencies of COD, N and P were investigated by using denitrifying phosphorus activated sludge taken from an anaerobic/anoxic/oxic (A²O)-biological contact oxidation (BCO) system. Response surface methodology using Central Composite Design (CCD) of Design-Expert was used to evaluate the influence and specific function of four important factors (initial COD concentration, nitrate concentration, temperature and anoxic reaction time) on the three responses, which were marked removal rate of COD, N and P as Y_cod, Y_n and Y_p, respectively. Among all the factors, initial COD concentration greatly influenced the three responses. In addition, anoxic reaction time had a major impact on Y_n and temperature had a greater influence on Y_p than other two factors. The three response model equations were all significant, where R² were 0.9853, 0.9118 and 0.9972 respectively. When initial COD concentration, nitrate concentration, temperature and anoxic reaction time were 316.95 mg·L^-1, 42.26 mg·L^-1, 27.19℃, and 237.37 min respectively, the model predictions of Y_cod, Y_n and Y_p were 93.54%, 99.96% and 99.56%, and test responses were 92.03%, 91.15% and 81.64%, respectively.

Key words: denitrifying phosphorus removal, response surface, COD, nitrate, temperature, anoxic reaction time

中图分类号:

X703

王聪, 王淑莹, 张淼, 彭永臻, 曾薇. 多因素对反硝化除磷过程中COD、N和P的去除分析[J]. 化工学报, 2015, 66(4): 1467-1475.

WANG Cong, WANG Shuying, ZHANG Miao, PENG Yongzhen, ZENG Wei. Analysis of COD, N and P in denitrifying phosphorus removal under multivariate condition[J]. CIESC Journal, 2015, 66(4): 1467-1475.

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多因素对反硝化除磷过程中COD、N和P的去除分析

Analysis of COD, N and P in denitrifying phosphorus removal under multivariate condition

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