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汉西污水处理厂一期工程规模为40×10~4m~3/d,出水水质执行《城镇污水处理厂污染物排放标准》(GB 18918—2002)二级标准,原采用A/O(厌氧/好氧)生物处理工艺。改扩建工程总规模为60×10~4m~3/d,出水水质提升为一级B标准。对一期工程采用降规模(34×10~4m~3/d)运行方式以达到提标要求,同步实施二期扩建工程(26×10~4m~3/d),一、二期污水处理均采用多模式A~2O工艺。试运行结果表明,出水水质优于一级B标准。污水厂污泥处理工程设计规模为325 t/d,采用CTB智能控制好氧发酵技术,发酵周期为20 d;发酵过程采用鼓风机曝气为主、匀翻机匀翻后熟为辅的供氧方式;发酵后的成品作为园林绿化介质土和林地土壤改良剂进行资源化利用。
The scale of the first phase of Hansi WWTP is 40 × 10 ~ 4m ~ 3 / d. The effluent quality is implemented as Class II standard of “Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant” (GB 18918-2002). The original use of A / O Oxygen / aerobic) biological treatment process. The total scale of the expansion and expansion project is 60 × 10 ~ 4m ~ 3 / d, and the effluent quality is upgraded to Grade B standard. The first phase of the project uses a reduced scale (34 × 10 ~ 4m ~ 3 / d) mode of operation in order to meet the requirements for bidding. The second phase expansion project (26 × 10 ~ 4m ~ 3 / d) Are using multi-mode A ~ 2O process. Test results show that the effluent quality is better than a B standard. Sewage treatment plant sludge treatment project design size of 325 t / d, the use of CTB intelligent control of aerobic fermentation technology, the fermentation period of 20 d; the fermentation process using aeration air blower, Way; the fermented finished product is used as landscaping medium soil and forest soil improver.