摘要
针对水源水库的氮源污染和有机物污染问题,研究了原位投菌技术对微污染水源水的修复效果。实验在中试反应器中进行,所投加菌剂为贫营养好氧反硝化细菌。实验结果表明,在菌剂投加量为0.1 mg/L,溶解氧质量浓度为5～8 mg/L,水温为16～25℃的条件下,系统对水中主要污染物NO3--N、TN和CODMn均有较好的去除效果,质量浓度分别从1.68、2.25、5.50 mg/L降至最低值0.75、0.95、3.03 mg/L,最大去除率分别可达到57.5%、57.7%和44.9%。系统对水中氮源污染和有机物的去除效果均能够满足《地表水环境质量标准》中的Ⅲ类标准,实验结果表明,将原位投菌技术应用于微污染水源水体的水质改善是可行的。同时还探讨了贫营养好氧反硝化细菌的作用机理。
In order to solve the problem of nitrogen and organic pollution of source water reservoir effective- ly, the effects of in-situ inoculation technology for micro-polluted source water restoration were studied by dosing oligotrophic aerobic denitrifiers. The test result showed that when the bacteria dosage was 0.1 mg/L, DO mass concentration was 5 ~ 8 mg/L, and the water temperature was 16 -25℃ , the restoration effect of the water sys- tem was satisfactory. The mass concentration of NO;-N, TN and CODMn was reduced from 1.68 mg/L, 2.25 mg/L and 5.50 mg/L to 0.75 mg/L, 0.95 mg/L and 3.03 mg/L, and the maximum removal rate could reach at 57.5% , 57.7% and 44.9% , respectively. The removal effect of nitrogen and organics could meet the require- ments of class Ⅲ of ＂environmental quality standards for surface water＂, which proves that in-situ bacteria inoc- ulation technology applied in the quality improvement of micro-polluted source water is feasible. The function mechanism of oligotrophic aerobic denitrifiers was also discussed in this paper.
出处
《环境工程学报》
CAS
CSCD
北大核心
2012年第7期2256-2260,共5页
Chinese Journal of Environmental Engineering
基金
国家"水体污染控制与治理"科技重大专项(2009ZX07424-006)
国家自然科学基金资助项目(50830303)
关键词
微污染水源水
贫营养好氧反硝化细菌
原位投菌技术
micro-polluted source water
oligotrophic aerobic denitrifiers
in-situ bacteria inoculation tech- nology
作者简介
黄廷林（1962-），男，教授，主要从事水质微污染控制与水资源保护研究工作。E-mail：huangtinglin@xauat．edu．cn
