Hybrid municipal wastewater treatment system for recovering the reclaimed water and phosphorous resource

提出了一种在单一反应室内同时进行硝化和反硝化的新型膜生物反应器(MBR)，用于深度处理城市污水。在建议的MBR中，通过在膜室内插入挡板，可以单独创建缺氧/好氧条件，因此可以同时进行硝化/反硝化。本研究建立的技术可以很容易地应用于几乎所有现有的MBR。在现有的城市污水处理厂进行了中试试验，以检验拟议的MBR的性能。在膜室内加装折流板，实际脱氮效果提高了30%。为了评价中水水质，提出了一种检测指示微生物的新方法。采用T-RFLP和Real-Time PCR等分子微生物学方法对这两种细菌进行检测。我们可以将它们的起源区分为人、牛和猪。我们有Succes…新方法在丰平河流域得到了较好的应用。水溶液中的正磷酸根离子能有效地被胶束状结构(ZS)捕获。反应通过HSO4-与ZS中的OH-和HPO3-之间的阴离子交换进行。ZS对HPO3-的最大吸附容量为330μ/gZS。这一数值是现有最好的脱硫剂的1.6倍。采用聚合酶链式反应-变性梯度凝胶电泳法(PCR-DGGE)和荧光原位杂交技术(FISH)分析了中试规模的常规膜生物反应器(CMBR)、复合式膜生物反应器(HMBR)和全规模活性污泥法(AS)处理同一城市污水的微生物群落结构。这两项技术都表明，与CMBR和全规模AS工艺相比，HMBR支持的微生物群落结构明显不同。FISH分析还显示，CMBR中的Chloroflei细菌(以前称为绿色非硫细菌)的数量是HMBR的四倍，是AS工艺的两倍。较少

A novel membrane Bioreactor(MBR) in which nitrification and denitrification simultaneously proceed in a single reaction chamber has been proposed for advanced municipal wastewater treatment. Anoxia/aerobic conditions are separately created in the proposed MBR by inserting baffles inside of the membrane chamber and consequently simultaneous nitrification/denitriication can be carried out. The technology established in this study can easily be applied to almost all of existing MBR's. Pilot-scale experiment to examine performance of the proposed MBR was carried out at an existing municipal wastewater treatment plant. Inserting baffles inside the membrane chamber actually increased removal of nitrogen by 30%.In order to evaluate the reclaimed water quality, new method for detecting the indicator microorganisms. Molecular microbiological procedures such as T-RFLP and Real-Time PCR areused to detect the both bacteria. We can distinguish their original among human, cow and pig. We have succes … More sfully applied the new method in Toyohira River basin. Ortho-phosphate ion in aqueous solution could be effectively trapped in the zirconium sulfate-surfactant micelle mesostructure (ZS). The reaction proceeded through anion exchange between HSO_4-and OH-in ZS and HPO_3-. Maximum sorption capacity of ZS for HPO3-was330 μmol/gZS. This value is 1.6 times higher than the existing best sorbent. The microbial community structure of a pilot-scale conventional membrane bioreactor (CMBR), hybrid MBR (HMBR) and a full-scale activated sludge (AS) process, treating the same municipal wastewater, were analyzed by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and fluorescence in situ hybridization (FISH) techniques. Both techniques demonstrated that the HMBR supported a significantly different microbial community structure comparing with the CMBR and with that of a full-scale AS process. FISH analysis revealed also that the population of Chloroflexi bacteria (formerly known as green nonsulfur bacteria), in the CMBR was four times greater than the HMBR and two times greater than the AS process. Less