由于醋酸工艺排放的含甲基汞废水的影响,使贵州清镇地区约4000亩水田受到污染,并在附近井水和上游湖水中检出甲基汞。工厂产生的含汞废水虽经除汞后排出,但仍有微量甲基汞排入环境,对环境产生明显污染。通过渗入作用可能对地下水造成污染。
Paddy field of 4000mu was polluted by waste water containing mylthmercury in Qingzhen District of Guizhou Province.The mylthmereury pollution index of paddy field was up to 60,thai of rice 7.The mylthmercury pollution index of well water in the district was up to 200,that of Hongfen Lake 50. Although the waste water containing mercury was treated,trace mylthmercury was still drained into environment,which was obviously polluted. The hair and blood in about 30% of people in the district accumulated mylthmercury,which came from rice and meat of domestic animals,but the content was lower than that of the people who eated polluted fish and shellfish. Otherwise,the district is located in NNE lava mountainous region,the stratum is dominated by carbonate rock of shallow-sea facies.Therefore it is possible that groundwater is polluted through permeation effect.
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