河北环保技术厂-生活污水处理设备,工业废水处理设备

农村生活污水特点

Characteristics of rural domestic sewage

由于农村人口居住分散，使得农村生活污水具有以下特点：

As the rural population living scattered, rural sewage has the following characteristics:

1）总量大且不断增加，环境污染严重。随着我国新农村建设飞速发展，农村地区生产、生活污水的排放量也不断增长。据统计，2010年我国农村污水排放量约为90×108t，预计到2017年，我国农村污水排放量将达到148×108t。污水任意排放导致农村地区河网以及地下水水质持续快速恶化，农灌沟渠及农村河道水环境普遍为劣Ⅴ类，甚至许多河渠达不到农灌水质标准的要求。

1) the total amount is large and increasing, and the environmental pollution is serious. With the rapid development of new rural construction in China, the discharge of production and living sewage in rural areas has also been increasing. According to statistics, in 2010 China's rural sewage discharge is about 90 * 108t, it is estimated that by 2017, China's rural sewage emissions will reach 148 * 108t. Indiscriminate discharge of sewage in rural areas lead to sustained and rapid deterioration of river and groundwater quality, agricultural irrigation ditches and rural river water environment is generally poor V, even many canals are not up to the agricultural irrigation water quality standards.

2）有机物含量高。农村生活污水主要是农村居民生活当中产生的厨房污水、洗涤用水及厕所冲水，其中COD、氮磷、悬浮物及病菌等为主要污染物，氨氮、总氮、总磷等污染指标浓度总体较高。

2) organic content is high. Rural sewage is mainly rural residents living in the kitchen and toilet flushing sewage, washing water, COD, nitrogen and phosphorus, suspended solids and bacteria as the main pollutants, ammonia nitrogen, total nitrogen and total phosphorus pollution index concentration is generally high.

3）水质水量波动大，粗放型排放。按照农村生活规律，污水明显表现为间歇排放且日变化系数较大，一般可达3.0～5.0，污水排放有着明显的早中晚三峰特征或早晚双峰特征；同时受作物生长、地理环境、气候等多种因素的影响，不同农村地区不同季节排放的水质水量均不同。另外，由于农村污水排放管网不完善，农村生活污水一般为粗放型排放，排放量小且分散。

3) water quality, water quantity fluctuation, extensive emission. According to the law of life, the sewage is obviously intermittent discharge and diurnal variation coefficient is larger, can reach 3 to 5, the sewage discharge has obvious early in the evening of the three peak features or characteristics of Shuangfeng sooner or later; at the same time, crop growth is affected by many factors such as geographical environment and climate, water discharge in different seasons in different rural areas are different. In addition, because the rural sewage discharge network is not perfect, rural domestic sewage is generally extensive emissions, emissions are small and scattered.