【摘要】 水体黑臭是城乡普遍的水环境问题,严重影响水体景观和水质安全.揭示高污染水体产生黑臭的具体水质和环境条件阈值,对于水体黑臭预警、预防和治理工作有重要意义.根据黑臭水普遍特征,人工自制典型黑臭水,分析了总有机碳、总氮、Fe2+浓度、温度、溶氧、水深等对黑臭水形成的影响,从水质参数与环境条件两方面分析黑臭水形成的阈值条件.研究结果表明,在本试验条件下,当总有机碳≥150mg/L,总氮≥50mg/L,Fe2+浓度≥0.2mg/L,温度≥25℃,水深≥0.9m及厌氧条件时,高污染水体会发生黑臭.更多还原

【Abstract】 The black and odorous water body is a common environmental problem in urban and rural areas over china,which is detrimental to aesthetics of water body and water safety.Elucidating the thresholds of water quality and environmental conditions that cause polluted water becoming black and odorous is important for the warning,prevention and control of black-odor water bodies.In this paper,the typical black-odor water was prepared according to the characteristics of black-odor water.The effects of water quality and environmental conditions,e.g.total organic carbon,total nitrogen,Fe2+,dissolved oxygen,temperature and water depth,on the formation of black-odorous water were investigated.The results showed that in this experiment the conditions for the formation of black-odorous water are total organic carbon≥150mg/L,total nitrogen≥50mg/L,Fe2+≥0.2mg/L,temperature≥25℃,water depth≥0.9 mand anaerobic condition.更多还原