摘要
通过对清河流域畜禽养殖行业产生污水的各指标(BOD5,COD,NH_3-N)浓度进行统计,得出了排放污水中各污染物指标的浓度值范围。通过OPMSE的仿真计算,得出了排放污水经过BAT处理后,污染物浓度正态分布均值在90%,95%,99%置信水平下的置信区间。在置信水平为99%时,畜禽养殖行业的COD置信区间为(42.00,48.19),BOD_5置信区间为(7.47,8.74),NH_3-N置信区间为(6.78,7.88)。同时,依据仿真计算结果还得出了处理后污染物浓度的极小值和极大值,畜禽养殖行业的最佳出水COD,BOD_5,NH3_-N指标质量浓度分别为22.0,2.1,3.09 mg/L,最差出水COD,BOD_5,NH_3-N指标质量浓度分别为84.4,14.2,13.29 mg/L。将仿真结果与现有排放标准对比,拟定畜禽养殖行业的COD,BOD_5,NH_3-N直接排放限值分别为50,9,8 mg/L。
The concentration range of different pollutants from the discharged sewage is obtained by analyzing the concentra- tion index of the discharged sewage from livestock industry in the Qinghe river basin. The confidence intervals at the 90%, 95 % and 99 % confidence levels of normal distribution means of pollution concentration are also acquired after being treated by BAT according to the simulating calculation of OPMSE. In the livestock industry, the 99 % confidence intervals of COD, BOD5 and NH3- N are （42.00,48.19）, （7.47,8.74） and （6.78,7.88） respectively. Meanwhile, the maximum and minimum values of the treated pollutant coneentrations are also obtained by simulating calculation. The optimum concentra- tions of COD, BOD5 and NH3 - N of effluents from livestock industry are 22.0 mg/L, 2.1 mg/L and 3.09 mg/L, while the worst concentrations of COD, BOD5 and NH3 - N of effluents from livestock industries are 84.4 mg/L, 14.2 mg,/L and 13.29 mg/L. Then making a comparison between the existing emission standards and simulating results, new emission limits are determined preliminarily, and the direct and interim emission limits of livestock industries are COD = 50 mg/L, BOD5 = 9 mg/L, NH3 - N = 8 mg/L respectively.
出处
《工业安全与环保》
北大核心
2016年第4期73-76,共4页
Industrial Safety and Environmental Protection
基金
水体污染控制与治理国家科技重大专项(2012ZX07505-002)
