重庆市农村生活污水处理经济适用技术探讨

Review on Economic Feasibility of Rural Domestic Sewage Treatment Technology in Chongqing Municipality

重庆市农村地区住户居住较为分散,地形差异大,经济水平不高,其生活污水具有水质、水量日变化系数和时变化系数均较大的特点,与城市生活污水具有较大的差别。因此,传统城市污水处理工艺并不适合重庆市农村生活污水的治理。针对重庆市农村生活污水的特点,详细介绍了三种适合重庆市农村生活污水处理的经济适用技术,包括高效藻类塘、复合型人工湿地和净化沼气池-人工湿地技术。这三种处理技术均具有投资省、运行费用低、管理维护简单、处理效果好和运行稳定的特点,在重庆市农村生活污水处理上具有较强的适应性和可行性。

The rural households in Chongqing Municipality have charaterised by scattered residence, largely diverse topography and lower household income.. Besides, rural domestic sewage differed greatly with urban sewage in terms of waste water quality, coefficient of variation for within-day, coefficient of variation day by day, water . Therefore, routine wastewater treatment technologies become ineffecitive in Chongqing rurals. Based on the charcteristics of domestic sewage in Chongqing, the paper summarizes three most commonly used treatment technologies, namely high-rate algae pond, compound artificial wetland and methane generating pit-constructed wetland The above mentioned techinologies share common advantages, such as economic efficiency with limited fixed investment lower operation costs, convenient maintenance and management, effective and steady performance in treatment and so forth. In sum, the technologies in discussion appear to sustainable and practically suitable in Chongqing rural areas.