摘要
本文通过对汕头、湛江二大筹建中电厂厂址附近海域水质富营养化的调查,从水体富营养化的形成条件和影响因素入手,分析了河口医水质富营养化特征、成因和滨海火电厂温排水排放对水域富营养化的影响。文章通过分析认为,电厂大量温排水的排放,促进了水域中水生物的增殖;水中溶解氧减少和水体自净能力的下降,促进底泥中磷素的释放,使水中氮磷比例更趋于适合富营养化特征藻类的增殖需要,在某种程度上加速了富营养化的发生。最后提出了滨海火电厂海区防止“赤潮”发生的途径和新电厂选址的意见。
Through investigating the eutrophication condition of the waterbodies located nearby Shantou and Zhanjiang thermal power plants, and by taking the formation and controlling factors of eutrophication as the starting point, the characteristics and formation factors of eutrophication in the area of estutary and the effect of discharging warm effluent from the thermal power plants on cutrophication of waterbody were analysed.
The discharge of warm effluent would promote the propagation of aquatic living organisms; decrease of dissolved oxygen and lowering of natural-purification ablity of waterbody would increase the release of phosphorus, so that the ratio between nitrogen and phosphorus reached at the point to promote algae propagation, and finally the eutrophication of waterbody was accelerated. To prevent the formation of 'red tide' in the area of sea near the thermal power plants, some suggestions were given including a plant site selection.
出处
《环境污染与防治》
CAS
CSSCI
CSCD
北大核心
1990年第6期6-8,共3页
Environmental Pollution & Control
