摘要
以大汶河泰安段为研究区域,以COD和氨氮为污染指标,分别用排污口中间概化和均匀概化两种方法计算COD和氨氮纳污能力,结果表明:两种方法计算的COD纳污能力完全相等,而氨氮的纳污能力十分接近,大汶河泰安段50%、75%、95%保证率下COD纳污能力总量分别约为13 436、7 111、1 860 t/a,氨氮纳污能力总量分别约为743、393、103 t/a,不同流量下纳污能力变化很大;流量越小,保留区纳污能力占总纳污能力的比例越小,开发利用区纳污能力占总纳污能力的比例越大,而且随着流量的减小这种变化趋势越来越明显。
Taking the Tai＇ an section of Dawen River for the research area, with COD and NH4-N as the pollution index and using two calculation methods of the sewage outfall intermediate generalization and uniform generalization to calculate COD and NH4-N pollution carrying capacity respec- tively. The results show that two methods of computing the COD pollution carrying capacity are equal, whereas NH4-N pollution carrying capacity is very close. The COD pollution carrying capacity of Dawen River in Tai＇ an under 50% , 75% and 95% assurance rate are 13 436,7 ll l, 1 860 t/a respectively and that of NH4 - N are 743, 393, 103 t/a respectively, which illustrates that the carrying capacity varies greatly in different de- sign flow. The smaller the flow is the smaller proportion of pollution canting capacity in the reserve zone, and the bigger the proportion in develop- ment and utilization zone, and with the flow reduced this trend more and more apparent.
出处
《人民黄河》
CAS
北大核心
2012年第12期63-65,68,共4页
Yellow River
基金
国家自然科学基金创新群体研究基金资助项目(51021006)
中国水利水电科研专项(ZJ1224)
关键词
纳污能力
功能区划
COD
氨氮
大汶河泰安段
pollution carrying capacity
functional zone
COD
NH4-N
Dawen River in Taian
