共查询到20条相似文献,搜索用时 250 毫秒
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新疆生产建设兵团某工业园区废水处理厂进水由生活污水和工业废水组成,出水水质要求达到《城镇污水处理厂污染物排放标准》一级A排放标准(GB 18918-2002)。工程废水处理主体工艺采用粗格栅及进水泵房-气浮沉淀池-水解酸化池-A~2/O反应池-MBR反应池对进厂废水进行处理,污泥处理采用污泥浓缩池-厢式隔膜压滤机工艺。一期建设规模为3万m~3/d。介绍了工程设计进出水水质指标的确定、主要构筑物的工艺设计参数以及工艺设计特点,并对运营后进出水水质进行了分析。 相似文献
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以某市污水处理厂为例,介绍了污水处理厂升级改造技术措施和方法。对原有DAT—IAT工艺进行改良,以满足水质要求,并新建A—A2/O生化池实现扩建,满足污水水量的增加,同时新增深度处理单元即高密度沉淀池+V型滤池+紫外线消毒工艺。出水水质由《城镇污水处理厂污染物排放标准》(GB 18918—2002)的二级标准提高到一级A标准。 相似文献
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通过对净水厂生产排泥水的产生和水质特性进行分析,确定沉淀池排泥水和滤池反冲洗废水为净水厂排泥水的主要组成,结合设计干泥量的计算确定排泥水处理规模,在分析排泥水处理系统工艺流程布置特点的基础上对排泥水收集、调节、浓缩和脱水工艺进行分析,并对其中排水池、排泥池、浓缩池、平衡池、脱水工艺和场地布置的设计要点进行总结。 相似文献
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准确了解城市污水处理厂的污泥产量,不仅对污水处理厂的运行管理有指导意义,也有利于后续污泥的处理与处置。对上海白龙港污水处理厂生物处理工艺污泥产量的设计值、实际运行值进行计算,分析不同污泥产量计算方法的特点。并对重新启用初沉池后污泥产量的变化进行了详细的测算和分析,结果表明,重新启用初沉池后污泥产量比超越初沉运行时有所减少,减轻了后续污泥处置负荷。 相似文献
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榨菜废水的高含盐量和高氮磷对微生物有较强的抑制作用,处理难度大.以处理规模400 m3/d的重庆某榨菜厂废水处理工程为例,其进水COD 3 000~4 000 mg/L,BOD5 1445 mg/L,盐度1.5%~2.5%(以NaCl计),氨氮80~120 mg/L,总磷25~30 mg/L.通过驯化耐盐微生物为主体菌种,采用化学除磷-水解酸化-厌氧接触-接触氧化工艺进行处理,出水COD、BOD5、氨氮、总磷以及盐度平均分别为70.5 mg/L、14.9 mg/L、9.4 mg/L、0.46 mg/L以及1.53%,可以达到《污水综合排放标准》(GB8978-1996)一级标准. 相似文献
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Y Suzuki T Kondo K Nakagawa S Tsuneda A Hirata Y Shimizu Y Inamori 《Water science and technology》2006,53(6):107-113
A new biological nutrient removal process, anaerobic-oxic-anoxic (A/O/A) system using denitrifying polyphosphate-accumulating organisms (DNPAOs), was proposed. To attain excess sludge reduction and phosphorus recovery, the A/O/A system equipped with ozonation tank and phosphorus adsorption column was operated for 92 days, and water quality of the effluent, sludge reduction efficiency, and phosphorus recovery efficiency were evaluated. As a result, TOC, T-N and T-P removal efficiency were 85%, 70% and 85%, respectively, throughout the operating period. These slightly lower removal efficiencies than conventional anaerobic-anoxic-oxic (A/A/O) processes were due to the unexpected microbial population in this system where DNPAOs were not the dominant group but normal polyphosphate-accumulating organisms (PAOs) that could not utilize nitrate and nitrite as electron acceptor became dominant. However, it was successfully demonstrated that 34-127% of sludge reduction and around 80% of phosphorus recovery were attained. In conclusion, the A/O/A system equipped with ozonation and phosphorus adsorption systems is useful as a new advanced wastewater treatment plant (WWTP) to resolve the problems of increasing excess sludge and depleted phosphorus. 相似文献
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