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

回收中水和磷资源的混合市政污水处理系统

基本信息

批准号：
14205077
负责人：
WATANABE Yoshimasa
金额：
$ 25.04万
依托单位：
HOKKAIDO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

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

已经提出了一种新的膜生物反应器（MBR），其中提出了在单个反应室中同时进行硝化和反硝化的，以进行晚期的市政废水处理。通过将挡板插入膜室内，可以在拟议的MBR中分别产生缺氧/有氧条件，因此可以同时进行硝化/否定。这项研究中建立的技术几乎可以应用于几乎所有现有的MBR的技术。在现有的市政废水处理厂进行了试验尺度实验以检查所提出的MBR的性能。在膜室内插入挡板实际上将氮的去除增加了30％。为了评估回收水质的新方法，用于检测指标微生物。分子微生物程序（例如T-RFLP和实时PCR）被用于检测这两种细菌。我们可以在人，牛和猪中区分它们的原始作品。我们已经成功了……更明智地应用了Toyohira河流域的新方法。水溶液中的磷酸离子可以有效地捕获在硫酸锆 - 表面活性剂胶束介质结构（ZS）中。反应通过HSO_4和OH-IN ZS和HPO_3-之间的阴离子交换进行。 HPO3-WAS330μmol/gz的ZS的最大焊接能力。该值是现有最佳排序的1.6倍。通过聚合酶链链反应梯度（PCREROPERESIMIS（PCR）和FLOMERIDICES（FILBREDIMIS）分析，对同一市政废水（filmbriceers）分析了试验尺度常规膜生物反应器（CMBR），混合MBR（HMBR）和全尺度活化污泥（AS）过程的微生物群落结构。两种技术都表明，与CMBR相比，HMBR支持了显着不同的微生物群落结构，并且与全尺度为过程相比。 FISH分析还表明，在CMBR中，氯反射细菌的种群（以前称为绿色非硫细菌）是HMBR的四倍，是AS过程的两倍。较少的