CAJ | 학술논문

采用模糊数学法对沣河流域5个断面进行水质综合评价，对监测断面的高锰酸钾指数、六价铬、氨氮和总硬度等4个污染因子进行水环境容量估算，并对河流纵向做水质趋势分析．结果表明，沣河水质在各个监测断面均可达Ⅲ类标准以上，属轻度污染，其中秦渡镇和沣峪口断面处达到国家Ⅱ类水质标准；整个河流氨氮的含量较高，尤其是渭河入口断面，平枯两期分别达到1.08mg／L和1.1mg／L ．沣河水质从上游至下游呈逐渐变差的趋势．
채용모호수학법대풍하류역5개단면진행수질종합평개，대감측단면적고맹산갑지수、륙개락、안담화총경도등4개오염인자진행수배경용량고산，병대하류종향주수질추세분석．결과표명，풍하수질재각개감측단면균가체Ⅲ류표준이상，속경도오염，기중진도진화풍욕구단면처체도국가Ⅱ류수질표준；정개하류안담적함량교고，우기시위하입구단면，평고량기분별체도1.08mg／L화1.1mg／L ．풍하수질종상유지하유정축점변차적추세．
Fuzzy mathematic was applied to evaluate water quality of five monitoring sections of Fenghe . Potassium permanganate index ,C6+r ,NH3 —N concentration and total water hardness were estimated , and the variation tendency of water quality is analyzed .The results show that the water quality of Fenghe reaches the national water quality standard Ⅲ ,which is slightly polluted ,the water quality of monito‐ring sections like Qindu tow n and Fenyukou even reaches standard Ⅱ ;N H3 —N concentration of Fenghe keeps a high level ,especially in the entrance of Wei River ,the concentrations of N H3 —N respectively reach 1.08mg/L and 1.1mg/L in the flat and dry water periods ;The water quality of Fenghe becomes gradually worse from upstream to downstream .