污水原位厌氧氧化生物滤床处理

城市污水厌氧消化处理时经常有机负荷较低,但是从经济、环境和能耗的角度考虑,厌氧污水处理技术还是有很强的吸引力.对无污水收集系统的小区和偏远地区,原位污水处理系统可以提供卫生和健康的环境.然而,不适当的原位污水处理系统的设计、安装、建设与维护,可能导致很多这样系统的损坏.本研究利用微色谱在线系统等研究方法,对利用两段厌氧滤床去除污水中污染物运行进行了研究.结果显示,该系统对BOD5 和SS 的去除率高于90 %.同时,研究利用LiCl为示踪剂,对两段厌氧滤床的水力停留时间进行了监测,得到了反应器的停留时间分布函数.结果可以帮助构建合适的节约型原位污水处理系统,为可持续的公共健康与环境保护服务,推动原位污水处理系统技术的发展.

On-site Two-stage Anaerobic Oxidization Filtersfor Sewage Treatment

Domestic wastewater has a relatively low organic load for anaerobic digestion purposes.However,setting up an on-site treatment system of domestic wastewater using anaerobic technology is highly attractive from an economic,environmental and energetic viewpoint.Onsite wastewater systems can provide a hygienic and healthy living environment,especially in non sewage and small communities.Nevertheless,improper sitting,design,construction and maintenance lead to the downfall of many of these systems.Research was conducted using a two-stage on-site anaerobic filter to determine the performance of anaerobic filter system with respect to pollutant reduction and gas production by using micro Gas Chromatography (GC) on-line system.The results indicate that relatively high BOD5 and SS removal efficiencies are attainable over 90 % using of this form of on-site system.Actual hydraulic retention times were determined using lithium chloride traces and retention time functions were obtained.It is recommended that anaerobic conditions are maintained in both reactors so that the suitability of two-stage anaerobic filters for on-site wastewater treatment may be determined.The results can help to set up the cost effective on-site wastewater control system suitable for sustainable public health and environmental protection and will led to the development of alternative on-site wastewater treatment systems.