安徽省农村生活污水典型处理工艺试验研究
发布时间：2019-05-09 13:58
【摘要】：农村生活污水污水主要包括人畜粪水、洗衣废水、洗澡废水和厨房废水,含有各种有机污染物、合成洗涤剂、油脂、悬浮物和病菌等。随着城市生活污水设施的不断完善,农村直接排放的生活污水,虽然每一处排放量小,但农村排放总量大,已是造成水环境污染和水体富营养化的主要原因之一。要使安徽省水体污染状况从根本上改善,加强农村生活污水的治理越来越重要。目前安徽省农村生活污水的处理,在费用、环境、政策、管理等方面均存在一定问题,但是其所存在的问题归根到底是由于处理工艺的选择不当产生。本文归纳总结了国内外农村生活污水处理的主要模式,再结合安徽省本地的实际情况,提出安徽省农村生活污水处理的难点,并推荐两种适合安徽省大部分地区的污水处理组合工艺。同时通过结合主要试点工程进行相关试验研究,(1)对适合于安徽省大部分地区的两种农村生活污水处理工艺,针对所要达到的目标《城镇生活污水处理厂污染物排放标准》(GB18918-2002)一级A标准,分析了太阳能微动力A2O+潜流人工湿地组合工艺、高负荷渗滤田+反硝化池组合工艺的处理技术参数；(2)对于太阳能微动力A2O+潜流人工湿地污水处理工艺,试验了分别在晴朗,阴天与雨天情况下产电量、曝气量、好氧池DO浓度及污水处理效果的关系。(3)对于高负荷渗滤田+反硝化池组合工艺,在不改变构筑物、不增加投资的条件下,进行了混合调节池原水到反硝化池的效果试验,并确定了最佳混合原水比例。试验结果表明,(1)太阳能微动力A2O+潜流人工湿地污水、高负荷渗滤田+反硝化池组合工艺出水可以达到《城镇生活污水处理厂污染物排放标准》(GB18918-2002)一级A标准(2)通过试验发现太阳能曝气机,晴朗跟阴天天气条件下,曝气量充足；雨天天气条件下,曝气量不能满足系统的稳定运行需要的条件,通过系统整改增加常规电源转换接口(市电互补控制器)后,曝气量达到要求。(3)通过试验数据分析TN不能达标的原因是污水经过渗滤田后,C/N降低,不能给反硝化池提供足够C源。对于反硝化池进水低C/N、低B/N的水质特征,在不增加外购碳源及碱度的条件下,选择添加调节池原水到反硝化池的方式。在不影响其他出水指标的前提下,确定了最佳混合原水比例,对于本案例为10%,TN总体去除率提升约10%左右,达到77.5%。
[Abstract]:Rural domestic sewage mainly includes human and livestock waste water, laundry wastewater, bath wastewater and kitchen wastewater, containing a variety of organic pollutants, synthetic detergents, oils, suspended substances and germs and so on. With the continuous improvement of urban domestic sewage facilities, although the direct discharge of domestic sewage in rural areas is small, the total amount of rural discharge is large, which is one of the main reasons for water environment pollution and water eutrophication. In order to fundamentally improve the situation of water pollution in Anhui Province, it is more and more important to strengthen the treatment of rural domestic sewage. At present, there are some problems in the treatment of rural domestic sewage in Anhui Province, such as cost, environment, policy, management and so on, but the existing problems are caused by the improper choice of treatment process in the final analysis. This paper summarizes the main modes of domestic and foreign treatment of rural domestic sewage, combined with the actual situation in Anhui Province, puts forward the difficulties in the treatment of rural domestic sewage in Anhui Province. Two combined wastewater treatment processes suitable for most areas of Anhui Province are recommended. At the same time, through the combination of the main pilot projects, the relevant experimental studies are carried out, (1) two kinds of rural domestic sewage treatment processes suitable for most areas of Anhui Province, In this paper, the solar energy micro-power A _ 2O subsurface flow constructed wetland combination process is analyzed in view of the first class A standard of pollutants discharge standard (GB18918-2002) of the urban domestic sewage treatment plant, which is the target to be achieved. Treatment technical parameters of denitrifying pool combination process in high load leachate field; (2) for the sewage treatment process of solar-powered A _ 2O subsurface flow constructed wetland, the electricity production and aeration rate were tested under the conditions of clear, cloudy and rainy days, respectively. The relationship between the concentration of DO in aerobic tank and the effect of wastewater treatment. (3) for the combined process of denitrifying tank in high-load percolation field, under the condition of no change in structure and no increase in investment, the effect test of mixing regulating pool raw water to denitrifying tank was carried out. The optimum proportion of mixed raw water was determined. The experimental results show that: (1) Solar micro-dynamic A2O subsurface constructed wetland sewage, The effluent of denitrifying tank combined process in high load leachate field can meet the discharge Standard of pollutants (GB18918-2002) of Municipal domestic sewage treatment Plant (GB18918-2002). (2) it is found that the solar aerator is sunny and cloudy under the condition of sunny and cloudy weather. Adequate aeration; Under rainy weather conditions, aeration can not meet the requirements of stable operation of the system. After the system is rectified and modified, the conventional power conversion interface (municipal power complementary controller) is added. The aeration rate meets the requirements. (3) the reason why TN can not meet the standard is that C 鈮，
本文编号：2472817
[Abstract]:Rural domestic sewage mainly includes human and livestock waste water, laundry wastewater, bath wastewater and kitchen wastewater, containing a variety of organic pollutants, synthetic detergents, oils, suspended substances and germs and so on. With the continuous improvement of urban domestic sewage facilities, although the direct discharge of domestic sewage in rural areas is small, the total amount of rural discharge is large, which is one of the main reasons for water environment pollution and water eutrophication. In order to fundamentally improve the situation of water pollution in Anhui Province, it is more and more important to strengthen the treatment of rural domestic sewage. At present, there are some problems in the treatment of rural domestic sewage in Anhui Province, such as cost, environment, policy, management and so on, but the existing problems are caused by the improper choice of treatment process in the final analysis. This paper summarizes the main modes of domestic and foreign treatment of rural domestic sewage, combined with the actual situation in Anhui Province, puts forward the difficulties in the treatment of rural domestic sewage in Anhui Province. Two combined wastewater treatment processes suitable for most areas of Anhui Province are recommended. At the same time, through the combination of the main pilot projects, the relevant experimental studies are carried out, (1) two kinds of rural domestic sewage treatment processes suitable for most areas of Anhui Province, In this paper, the solar energy micro-power A _ 2O subsurface flow constructed wetland combination process is analyzed in view of the first class A standard of pollutants discharge standard (GB18918-2002) of the urban domestic sewage treatment plant, which is the target to be achieved. Treatment technical parameters of denitrifying pool combination process in high load leachate field; (2) for the sewage treatment process of solar-powered A _ 2O subsurface flow constructed wetland, the electricity production and aeration rate were tested under the conditions of clear, cloudy and rainy days, respectively. The relationship between the concentration of DO in aerobic tank and the effect of wastewater treatment. (3) for the combined process of denitrifying tank in high-load percolation field, under the condition of no change in structure and no increase in investment, the effect test of mixing regulating pool raw water to denitrifying tank was carried out. The optimum proportion of mixed raw water was determined. The experimental results show that: (1) Solar micro-dynamic A2O subsurface constructed wetland sewage, The effluent of denitrifying tank combined process in high load leachate field can meet the discharge Standard of pollutants (GB18918-2002) of Municipal domestic sewage treatment Plant (GB18918-2002). (2) it is found that the solar aerator is sunny and cloudy under the condition of sunny and cloudy weather. Adequate aeration; Under rainy weather conditions, aeration can not meet the requirements of stable operation of the system. After the system is rectified and modified, the conventional power conversion interface (municipal power complementary controller) is added. The aeration rate meets the requirements. (3) the reason why TN can not meet the standard is that C 鈮，
本文编号：2472817
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