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目的研究水库库底污染物无害化处理的有效措施。方法按照随机抽样原则 ,对污染物进行清理至净土后再向四周及底部继续清理 ,检验清理不同深度的土壤样品 ;将污土分别用不同浓度消毒剂 (3 %、5 %、8 %有效氯 )和曝晒方法进行消毒 ,检验消毒后24h各类污土样品。结果污物清除后继续向四周及底部清理至40cm时 ,土壤合格率分别为96 23 %和94 34 % ;污土用含有效氯8 %的消毒剂消毒后合格率最高为98 11 %。各种清理、消毒措施间有显著性差异 (P<0 .005)。结论污物清除后继续向四周及底部清理应不小于40cm ,药物喷洒较曝晒消毒效果好 ,用含8 %有效氯的消毒剂消毒后洁净程度可达标
Objective To study the effective measures of harmless treatment of pollutants in reservoir bottom. Methods According to the principle of random sampling, the contaminants were cleaned up to pure soil and then cleaned to the surrounding and the bottom. The soil samples of different depths were inspected and cleaned up. The contaminated soil was treated with different concentrations of disinfectants (3%, 5%, 8% ) And exposure methods for disinfection, testing various types of soil samples after disinfection 24h. As a result, the soil pass rates were 96 23% and 94 34% respectively after the soil was cleaned up to the depth of 40 cm at the periphery and the bottom of the soil. The highest pass rate of the soil was 98 11% after the disinfectant containing 8% of the available chlorine was disinfected. There was a significant difference between various cleaning and disinfection measures (P <0 .005). Conclusion After the removal of dirt to the surrounding and the bottom of the cleaning should continue to be not less than 40cm, drug spraying better than the sun exposure and disinfection, disinfectant with 8% available chlorine disinfectant cleanliness up to standard