CAJ | 학술논문

石兜一坂头水库是厦门市的重要饮用水水源地，其水质的好坏直接影响供水安全保障。根据2007年11月-2011年10月的水质监测数据，参照GB3838—2002Ⅱ类水质标准，将27项水质监测指标分为3类，计算历年丰、平、枯水期水质综合指数（WQI），评价水质状况。结果表明：①难处理的毒性污染指标的WQI值小于10，远未危及水质安全；②易净化的污染指标中高锰酸盐指数、五日生化需氧量、大肠杆菌等在个别时段超标；③影响水质的最主要指标是总磷和总氮，单项指数常年保持在40以上，并曾一度接近80，达到Ⅳ类水质标准，水体受到一定的氮、磷污染。（矾年来，水质变化处于相对比较稳定的状态，丰、平、枯水期水质变化不甚明显，最大WQI为33．3，水质评价为优良，是合格的供水水源地。就污染物成因及该水源地保护措施进行了探讨。
석두일판두수고시하문시적중요음용수수원지，기수질적호배직접영향공수안전보장。근거2007년11월-2011년10월적수질감측수거，삼조GB3838—2002Ⅱ류수질표준，장27항수질감측지표분위3류，계산력년봉、평、고수기수질종합지수（WQI），평개수질상황。결과표명：①난처리적독성오염지표적WQI치소우10，원미위급수질안전；②역정화적오염지표중고맹산염지수、오일생화수양량、대장간균등재개별시단초표；③영향수질적최주요지표시총린화총담，단항지수상년보지재40이상，병증일도접근80，체도Ⅳ류수질표준，수체수도일정적담、린오염。（반년래，수질변화처우상대비교은정적상태，봉、평、고수기수질변화불심명현，최대WQI위33．3，수질평개위우량，시합격적공수수원지。취오염물성인급해수원지보호조시진행료탐토。
Shidou--Bantou reservoir is important a water source of Xiamen. Based on the data from November 2007 to Octo- ber 2011,27 water qualities parameters were grouped into three types to determine the water quality index（WQI） in abundant wa- ter periods, medium water periods or dry periods. The results show that ： 1 ： Single WQI of poisonous pollutants was less 10, far from endangering water quality security ; 2 ： IMn, BOD5 , colon bacillus in pollutants easy to purify sometimes went beyond the lev- el II of national standard for surface waters ; 2 ： Nitrogen and phosphorous were the most important parameters polluting water qual- ity, which single WQI were 〉 40 and once near to 80 ; 4. The highest WQI was 33.3 since 2007. The water quality was stable and good in different water periods. The reservoir was a qualified water source. Preliminary analysis on the source of pollutants and water quality conservation strategies were discussed.