广西师范大学学报（自然科学版） ›› 2021, Vol. 39 ›› Issue (5): 210-221.doi: 10.16088/j.issn.1001-6600.2020091401

• 研究论文 • 上一篇    

基于响应面法优化污水厂脱氮工艺研究

肖飞, 董文明, 王维红*   

  1. 新疆农业大学 水利与土木工程学院,新疆 乌鲁木齐 830052
  • 收稿日期:2020-09-14 修回日期:2020-10-23 出版日期:2021-09-25 发布日期:2021-10-19
  • 通讯作者: 王维红(1967—),女,新疆奇台人,新疆农业大学教授。E-mail:2209319288@qq.com
  • 基金资助:
    国家自然科学基金(51968071)

Optimization of Wastewater Containing Nitrogen in Wastewater Treatment Plant Based on Response Surface Methodology

XIAO Fei, DONG Wenming, WANG Weihong*   

  1. College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi Xinjiang 830052, China
  • Received:2020-09-14 Revised:2020-10-23 Online:2021-09-25 Published:2021-10-19

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384

摘要： 以新疆某联合式污水厂Ⅱ期脱氮运行工艺为研究对象,采用响应面法(RSM),研究污水进水水质和排泥量、投药量、污泥回流比等对出水总氮(TN)的影响,优化其运行参数。实验结果表明,从出水水质看,进水的碳氮质量比(C/N)、碳磷质量比(C/P)和有机负荷率(F/M)分别为8.00~9.00、55.00~60.00和0.09~0.10 d-1时,利于系统的硝化还原;排泥量、投药量和内回流比(R)分别为0.165~0.170 kg/m3、14.00~16.00 mg/L和43.00%~45.00%时,系统脱氮效果较好,结合氮损转移的数学模型可知,进水水质C/N和F/M对系统负荷的影响较大。由此可见,各影响因素处于最优范围时,有助于优化污水厂脱硝单元对废水中总氮的去除。

关键词: 联合式污水厂, 响应面法, 氮平衡模型, 总氮去除率

Abstract: Taking the phase II denitrification operation process of a joint sewage plant in Xinjiang as the research subjects, the response surface method (RSM) was applied to study the influence of sewage influent quality, sludge discharge amount, dosage, sludge reflux ratio, etc. on effluent total nitrogen (TN) and optimize its operating parameters. The experimental results showed that, from the perspective of effluent water quality, the optimal ranges of the influent carbon-nitrogen ratio (C/N), carbon-phosphorus ratio (C/P) and organic load (F/M) were 8.00-9.00, 55.00-60.00 and 0.09-0.10 d-1, respectively, which is conducive to the nitrification reduction of the system; under the additional factors, the optimal ranges for the amount of sludge, dosage and internal reflux ratio (R) were 0.165-0.170 kg/m3, 14.00-16.00 mg/L and 43.00%-45.00%, respectively, with the best denitrification effect of system. Combined with the mathematical model of nitrogen loss and transfer, it is known that the quality factors of effluent water C/N and F/M had a greater impact on the system load. Therefore, it is helpful to optimize the removal effect of total nitrogen in waste-water by the denitrification unit of the sewage plant when the various influencing factors are kept in the optimal range.

Key words: combined sewage plant, response surface method, nitrogen balance model, total nitrogen removal rate

中图分类号: 

  • X703
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