【摘要】 [目的]为水源水的保护和水的氯化处理提供参考。[方法]对2种不同灌溉模式的土壤进行萃取,用萃取液进行加氯反应并测定反应生成的消毒副产物的浓度。[结果]Soil连续的DOC浓度和需氯量分别为59.8和45.5 mg/L,Soil定期的DOC浓度和需氯量分别为7.5和11.9 mg/L。Soil连续和Soil定期土壤萃取液的电导率分别为2.71和1.22 dS/m。Soil连续的THMs生成量比Soil定期的THMs生成量高71.4%。Soil连续和Soil定期的CHC l3比例分别为83.1%和67.8%,Soil连续中3种THMs的浓度较高。Soil连续和Soil定期的HAAs生成量分别为1 393.8和480.7μg/L,Soil连续中检出卤乙酸的浓度高于Soil定期。THMs和HAAs生成量与DOC浓度呈正相关。Soil连续和Soil定期的Br浓度分别为0.36和0.32μg/L,Br/DOC值分别为0.006和0.043μg/mg,Soil连续的DBPs浓度高于Soil定期的DBPs浓度。[结论]灌溉模式对土壤DOC浓度及THMs与HAAs的生成具有显著影响。更多还原

【Abstract】 [Objective] The research aimed to supply references for protecting source water and chlorination treatment of water.[Method] The soil irrigated with 2 different modes were extracted,then the extract liquid was chlorinated and the concn.of disinfection by-products generated in the reaction was determined.[Result] The DOC concn.and chlorine demand of Soilcontinuous were 59.8 and 45.5 mg/L resp.and that of Soilperiodical were 7.5 and 11.9 mg/L resp.The conductivities of extract liquid from Soilcontinuous and Soilperiodical were 2.71 and 1.22 dS/m resp.Compared with Soilperiodical,the generation amount of THMs in Soilcontinuouss was increased by 71.4%.The proportions of CHCl3 in Soilcontinuous and Soilperiodical were 83.1% and 67.8% resp.The concn.of 3 kinds of THMs in Soilcontinuous were higher.The generation amounts of HAAs in Soilcontinuous and Soilperiodical were 1 393.8 and 480.7 μg/L resp.and the concn.of determined halo-acetic acid in Soilcontinuous was higher than that in Soilperiodical.The generation amounts of THMs and HAAs positively correlated with DOC concn.The concn.of Br in Soilcontinuous and Soilperiodical were 0.36 and 0.32 μg/L resp.,their Br/DOC values were 0.006 and 0.043 μg/mg resp.and the concn.of DBPs in Soilcontinuous was higher than that in Soilperiodical.[Conclusion] The irrigation modes had significant influence on DOC concn.and the generation of THMs and HAAs in soil.更多还原