茂名市小东江水质污染调查研究

Investigation on the Water Pollution of Xiaodong River in Maoming City

茂名市为典型的工业城市,随着经济发展,城市周边水体受到污染,作为城中河的小东江水体污染尤为突出,虽几经治理但仍有反复。通过调查法、综合评价法和样本分析法,调查小东江流域的水体污染变化状况。调查结果表明,小东江水质主要存在的问题是总氮、氨氮、化学需氧量和总磷超标。污染源主要来自流域附近制造业污水排放、生活污水排放的点源污染和水土流失的面源污染。建议政府要加强调控,从源头上减少污染物的输入,并就重污染河段枯水期采用水生植物修复法,流域沿岸建设植被过滤带及渗水路面等措施,改善小东江流域水质。

Maoming is a typical industrial city. With the development of economy,the surrounding water is polluted,especially the Xiaodong River basin. Measures have been taken to tackle the water pollution. However,the effect is quite limited. By means of investigation,comprehensive evaluation and sample analysis,investigate the water pollution changes in Xiaodong River Basin. The results show excessively high strength of total nitrogen content,ammonia nitrogen,chemical oxygen demand,and total phosphorus. The main sources of pollution are industrial and agricultural discharge and domestic waste water discharge in the drainage basin. Besides,the soil erosion deteriorated the water pollution. In order to improve the water quality in the river,it is suggested that the government should establish policies to reduce the pollutants input and strengthen the regulation and monitoring of water pollution. The method of aquatic plant restoration is a well option to carried out in the dry season of the heavily polluted river section,and the measures of vegetation filter belt and seepage road should be built along the river basin.