细菌对地下水污染的指示意义——以我国南方某市为例

Indicative Significance of Bacteria to Groundwater Pollution-A case Study in a City of the Southern China

根据对全市293个地下水监测点开展的调查结果,评估研究区地下水质量及细菌污染现状。结果显示,研究区地下水质量不容乐观,78%的监测点水质等级为较差,细菌总数、总大肠菌群超过地下水V类限值分别为43%和77%,其与地下水p H、溶解氧及氨氮呈显著相关,人类活动是研究区地下水细菌污染的直接原因。

Based on the groundwater survey and investigation of 293 rural wells, groundwater quality and pollution status was analyzed and evaluated in a city of the southern China. The study results indicated that local groundwater was severely polluted, 78 % of the groundwater quality of the samples was poor, 43 % and 77 % of the samples of the total bacterial count and the total coliform group exceed the threshold value of the 5th grade of the groundwater quality standard, and which shown significant correlation with pH、dissolved oxygen and ammonia. Humility activities were the direct cause of local groundwater bacteria pollution.