刘瑶瑶;吴乾元;孙迎雪;李昂;胡洪营;

• 1:北京工商大学环境科学与工程系
• 2:清华大学深圳研究生院深圳市环境微生物利用与安全控制重点实验室
• 3:清华大学环境学院环境模拟与污染控制国家重点联合实验室国家环境保护环境微生物利用与安全控制重点实验室

摘要(Abstract)：

再生水补给河流是解决城市景观用水缺乏的重要途径,但是再生水中的氨氮,特别是游离氨对水生生物的毒害作用也不容忽视。针对再生水补给河流的典型场景,根据物种敏感度分布法(Species Sensitivity Distribution,SSD),计算得到游离氨的属急性毒性基准最大质量浓度(Criterion Maximum Concentration,CMC)为0.093 mg/L。以保护95%水生生物为目标的河水氨氮控制目标分别为4.37 mg/L(水温T≤12℃)和1.73 mg/L(水温T>12℃)。根据再生水补给河流的不同比例(体积比),计算再生水的氨氮控制目标。当河流上游来水分别满足地表水环境质量标准Ⅳ、Ⅴ类水体要求和CMC值,再生水占混合后河水的比例为20%¹00%且水温T>12℃时,再生水氨氮控制目标分别为1.7100%且水温T>12℃时,再生水氨氮控制目标分别为1.7².6 mg/L、0.62.6 mg/L、0.6¹.7 mg/L和1.7 mg/L;当河流上游来水分别满足Ⅳ、Ⅴ类水体要求,再生水占混合后河水的比例为50%1.7 mg/L和1.7 mg/L;当河流上游来水分别满足Ⅳ、Ⅴ类水体要求,再生水占混合后河水的比例为50%¹00%且水温T≤12℃时,再生水氨氮控制目标分别为4.4100%且水温T≤12℃时,再生水氨氮控制目标分别为4.4⁷.2 mg/L和4.47.2 mg/L和4.4⁶.7 mg/L。当河水全部由再生水组成时,推荐再生水的氨氮控制目标为1.7 mg/L(水温T>12℃)和4.4 mg/L(水温T≤12℃)。

关键词(KeyWords)： 环境学;生态风险评价;再生水;氨氮控制标准;物种敏感度分布;水质标准

Abstract:

Keywords:

基金项目(Foundation): 国家水体污染控制与治理科技重大专项(2012ZX07302-002);; 水利部公益项目(201201033)

作者(Authors): 刘瑶瑶;吴乾元;孙迎雪;李昂;胡洪营;

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