人民黄河
人民黃河
인민황하
Yellow River
2013年
12期
86-90
,共5页
吴文成%任露陆%马少杰%谢文彰
吳文成%任露陸%馬少傑%謝文彰
오문성%임로륙%마소걸%사문창
城市河流%生态增容%环境容量%生态系统%遂溪河
城市河流%生態增容%環境容量%生態繫統%遂溪河
성시하류%생태증용%배경용량%생태계통%수계하
urban river%enhancing and controlling of ecological capacity%environment capacity%ecological system%Suixi River
针对城市河流生态系统严重退化与水质普遍受到污染的现实,提出了生态增容的理念,分别从底泥环保疏浚、降雨径流污染物浓度削减、城市点源减排、农业面源减排、流域水土保持、河流生态系统健康恢复与维持等方面提出了管控措施。根据区域削减量,预测了遂溪河遂溪县城段的减排效果,COD与氨氮的预测值分别为18.56 mg/L与0.87 mg/L,分别占标准的92.8%及87.0%,满足了Ⅲ类水环境功能要求,这两项指标的允许排放量分别为272.38 t/a、23.60 t/a。通过实施生态增容方案,不但可以使研究水体达到既定的水环境功能,腾出环境容量用于适度发展经济,还可以实现河流健康生态系统的良性循环。
針對城市河流生態繫統嚴重退化與水質普遍受到汙染的現實,提齣瞭生態增容的理唸,分彆從底泥環保疏浚、降雨徑流汙染物濃度削減、城市點源減排、農業麵源減排、流域水土保持、河流生態繫統健康恢複與維持等方麵提齣瞭管控措施。根據區域削減量,預測瞭遂溪河遂溪縣城段的減排效果,COD與氨氮的預測值分彆為18.56 mg/L與0.87 mg/L,分彆佔標準的92.8%及87.0%,滿足瞭Ⅲ類水環境功能要求,這兩項指標的允許排放量分彆為272.38 t/a、23.60 t/a。通過實施生態增容方案,不但可以使研究水體達到既定的水環境功能,騰齣環境容量用于適度髮展經濟,還可以實現河流健康生態繫統的良性循環。
침대성시하류생태계통엄중퇴화여수질보편수도오염적현실,제출료생태증용적이념,분별종저니배보소준、강우경류오염물농도삭감、성시점원감배、농업면원감배、류역수토보지、하류생태계통건강회복여유지등방면제출료관공조시。근거구역삭감량,예측료수계하수계현성단적감배효과,COD여안담적예측치분별위18.56 mg/L여0.87 mg/L,분별점표준적92.8%급87.0%,만족료Ⅲ류수배경공능요구,저량항지표적윤허배방량분별위272.38 t/a、23.60 t/a。통과실시생태증용방안,불단가이사연구수체체도기정적수배경공능,등출배경용량용우괄도발전경제,환가이실현하류건강생태계통적량성순배。
Aiming at the situation of serious degradation and pollution of urban river ecosystem,this paper proposed a concept of enhancing and controlling system of ecological capacity,which included contaminated sediment dredging,pollutants concentration reduction from rainfall and run-off,city point sources discharge reduction,agricultural non-point sources discharge reduction,soil and water conservation in river basin,restoration and maintenance of river ecosystem,etc. Based on the reduction amount in the study area,it predicted the discharge reduction effect of the down-town reach of the Suixi River. The estimated values of COD and ammonia nitrogen were 18. 56 mg/L and 0. 87 mg/L respectively,which were 92. 8% and 87. 0% of Class III water standard. The amount of discharge limits were 272. 38 t of COD and 23. 6 t of ammonia nitrogen per year. In general,the implementation of enhancing ecological capacity not only can meet the functional requirements and spare environmental capacity for economic development,but also can promote a virtuous circle of urban river ecosystem.