三角洲河网地区城镇污水的特征及治理对策探讨———以广东省番禺市为例

Discussion on Characteristics of City Sewage and Prevent and Cure Measures in River Crossed Delta Areas Take Panyu City of Guangdong Province as an Example

通过对广东省番禺市城镇污水的调查研究，获得了三角洲河网地区城镇污水的水量、水质变化特征以及水污染特征：工业废水地域分布趋于分散，行业分布更加广泛，排放总量逐年递减；生活污水排放总量逐年递增；城镇污水中，污染物含量较低，ＢＯＤ５／ＣＯＤｃｒ比值偏小；大量未经处理的城镇污水的直接排放以及河网地区潮流的顶托作用，使该地区部分河段水质恶化，进而影响到水源地水质．针对上述问题，提出了７条污水治理对策。

An investigation was carried out on city sewage in Panyu city, Guangdong province. The findings were: Industrial waste water tended to be more widely distributed in regions and professions, the total amount of waste water discharging was undergoing a gradually decreasing trend while that of domestic sewage was increased every year; the city sewage was characterized by low pollutants content and small BOD 5/CODcr the direct discharging of untreated city sewage, in addition with the tidal effects, cause water pollution problems in the area. Some countermeasures were provided.