摘要
将水解反应器作为前置反硝化的一部分,利用水解反应器内良好的无氧环境、反硝化细菌的功能快速恢复和有机物有效供给,在不加外加碳源的情况下实现高效脱氮。实验结果表明,在外加硝氮分别为10、20和30 mg/L的情况下,硝氮去除率分别为87.9%、94.9%和92.6%。通过总氮成分研究,有机氮成分能被水解为氨氮,同时水解出水的用氧吸收速率平均高于原水的0.44 mg/(g·h),提高了约15%,有利于后续生化处理硝化反应。并且水解反应器能提高出水可生化性,与进水SCOD/COD平均值44.99%相比,出水SCOD/COD平均值为71.72%,提高了26.73%。
As a part of the pre-denitrification, hydrolysis reactor makes use of its own anaerobic environment, the rapid function recovery of denitrifying bacteria and effective supply of organic matter to achieve efficient denitrification without external carbon source. Experimental results showed that in the case of external nitrate as 10 mg/L, 20 mg/L and 30 mg/L, removal rate of nitrate nitrogen is 87.9%, 94.9% and 92.6% respectively. According to analysis of component of total nitrogen, organic nitrogen can be hydrolyzed into ammonia, and average oxygen uptake rate（OUR） of the hydrolysis effluent is 0.44 mg/（g .h）, 15% higher than that of the raw water, so OUR can be raised by about 15% using hydrolysis reactor, which will be beneficial to the follow-up biological treatment of nitration reaction. Moreover, biodegradability can also be improved by the hydrolysis reactor. As shown in experiment, average SCOD/COD of hydrolysis reactor effluent is 71.72% which has been increased by 26.73%, comparing with that of influent which is 44.49%.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2013年第9期104-107,共4页
Environmental Science & Technology
基金
国家高技术研究发展计划"863"项目(2009AA063802)
国家水体污染控制与治理科技重大专项(2012ZX07203)
关键词
水解反应器
反硝化
脱氮
氮转化
hydrolysis reactor
denitrification
nitrogen removal
nitrogen transformation
