摘要
为了解唐山市海水养殖模式尾水污染状况,2020年,对唐山市主要沿海县区7种海水养殖模式养殖尾水状况进行了监测及分析。监测内容共5项,包括:COD、总氮、总磷、无机氮、活性磷酸盐,分别对养殖进水和尾水进行了监测。结果显示,7种养殖模式尾水COD全部合格,合格率远超过进水。无机氮进水和尾水均超标,进水超标率远高于尾水。进水、尾水无机氮随季节变化情况:秋季>春季>夏季。总氮、总磷尾水超标率高于进水。总氮的随季节变化情况:春季>秋季>夏季。总磷随季节变化情况:春季>夏季>秋季。活性磷酸盐超标严重,进水、尾水均超过限量值的3倍。研究表明:活性磷酸盐和无机氮是唐山市海水养殖进水、尾水主要超标指标。尾水中总氮、总磷、无机氮、活性磷酸盐的超标主要是由于进水超标所导致。
Seven kinds of mariculture modes were selected to monitor and analyze the status of aquaculture tail water in the main coastal counties of Tangshan in 2020.A total of 5 parameters were analyzed for tail water quality evaluation,including COD,TN,TP,inorganic nitrogen and active phosphate.The results showed that COD in the tail water of 7 kinds of aquaculture models were all qualified,and the qualified rate was much higher than that of influent water.The influent and tail water of inorganic nitrogen exceeded the standard,and the excess rate of influent was much higher than that of tail water.The seasonal variation of inorganic nitrogen in influent and effluent was autumn>spring>summer.The excess rate of TN and TP in tail water is higher than that in influent water.The seasonal variation of TN was spring>autumn>summer.The seasonal variation of TP was spring>autumn>summer.The content of active phosphate in influent and effluent exceeds 3 times the limit value.The results showed that the main pollutants were inorganic nitrogen and active phosphate in influent water and tail water.The main pollutants were TN,TP,inorganic nitrogen and active phosphate in tail water.
作者
宋荪阳
黄金臣
岳强
张宏祥
张强
SONG Sunyang;HUANG Jinchen;YUE Qiang;ZHANG Hongxiang;ZHANG Qiang(Tangshan Aquatic Product Technology Promotion Department,Tangshan 063000,China)
关键词
唐山
海水养殖
尾水
监测
分析
Tangshan
marine aquaculture
tail water
monitoring
analyzing
