硝化液回流比对生物生态组合工艺脱氮除臭效果的影响

生态与农村环境学报 ›› 2013, Vol. 29 ›› Issue (5): 630-634.doi:

硝化液回流比对生物生态组合工艺脱氮除臭效果的影响

郑美玲,吕锡武,王永谦

东南大学能源与环境学院

收稿日期:2011-09-17 修回日期:2013-09-11 出版日期:2013-09-25 发布日期:2013-09-30
通讯作者: 吕锡武东南大学能源与环境学院 E-mail:xiwulu@seu.edu.cn
作者简介:郑美玲（1988-），女，江苏盐城人，硕士，主要研究方向为分散式生活污水高效厌氧产沼气及脱氮除臭。E-mail:z_zhengmeiling@163.com
基金资助:
水体污染控制与治理科技重大专项(2012ZX07101-005)

Effect of Internal Recycle Ratio on Denitrification and Deodorization Eeffects of the Bio-Ecological Technology

ZHENG Mei-Ling, LÜ Xi-Wu , WANG Yong-Qian

School of Energy&Environment,Southeast University

Received:2011-09-17 Revised:2013-09-11 Online:2013-09-25 Published:2013-09-30
Contact: Lü Xi-Wu School of Energy&Environment,Southeast University E-mail:xiwulu@seu.edu.cn

摘要/Abstract

摘要： 通过小试规模试验研究“厌氧产沼气池-缺氧池-跌水充氧池-人工湿地”生物生态组合工艺处理实际生活污水的效能，考察硝化液回流比对脱氮除臭效果的影响规律。结果表明，当回流比从25%逐渐增加至200%时，TN平均去除率从15.0%增加至52.3%；但是当回流比继续增加至300%时，TN平均去除率下降至44.7%。在回流比为25%、50%、100%、200%和300%时，硫化氢作为污水中的主要恶臭源，其在缺氧池中的去除率分别为23.7%、30.8%、54.7%、82.6%和90.1％。同时，硫化氢去除率随缺氧池中DO和NO₃-浓度的增加而升高。系统回流比为200%时，组合工艺可获得最佳的脱氮除臭效果。

关键词: 硝化液回流比, 脱氮, 除臭, 组合工艺

Abstract: A small-scale experiment was accomplished to evaluate effect of the bio-ecological technology combining anaerobic biogas digestor- anoxic tank-waterfall aeration tank-constructed wetland in the treatment of domestic sewage and effect of internal recycle ratio on denitrification and deodorization effectsfunction of the technology. Results reveal that when the ratio increases from 25% to 200%, the total nitrogen removal increaseds from 15.0% to 52.3%. However, when the ratio continuesd to increase to 300%, the removal rate decreaseds to 44.7%. Besides, it is noted that hydrogen sulfide is the main source of odor that must be controlled for deodorization. The increasing internal recycle ratio leads to improved hydrogen sulfide removal efficiency. When the ratio risesaised from 25% to 50%, 100%, 200% and up to 300%, the hydrogen sulfide removal rate went up from 23.7% to 30.8%, 54.7%、82.6% and 90.1％ in the anoxic tank. And at the same time, the rate increasesd with the concentrations of dissolved oxygen (DO) and nitrate (NO₃-) in the tank. The findings show that the combined technology performs the best when the internal recycle ratio in the system is adjusted to 200%.

Key words: the internal recycle ratio, denitrification, deodorization, combination process

中图分类号:

郑美玲, 吕锡武, 王永谦. 硝化液回流比对生物生态组合工艺脱氮除臭效果的影响[J]. 生态与农村环境学报, 2013, 29(5): 630-634.

ZHENG Mei-Ling, Lü Xi-Wu , WANG Yong-Qian. Effect of Internal Recycle Ratio on Denitrification and Deodorization Eeffects of the Bio-Ecological Technology[J]. Journal of Ecology and Rural Environment, 2013, 29(5): 630-634.

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