本文是對水質(zhì)通過MBR處理進行分析， 分別對背景 經(jīng)濟 效果 安裝與維護 勘察 等等進行系統(tǒng)的描述和技術(shù)的探究。
本文語種：英語
頁數(shù)：81頁面
摘要：
The City of San Diego is in the process of conducting a major pilot testing program at Aqua
2000 Research Center for the eva luation of water repurification to augment a local water
supply, in order to reduce their reliance on limited imported water supplies. Desalting
membranes play an important role in nearly every water repurification project since these
membranes are the best available technology for removal of inorganic salts, trace metals and
organic compounds. In addition, they have the potential for removal of all classes of
microorganisms.
As part of the Aqua 2000 Research Center program, the City of San Diego is also interested
in eva luating the new and emerging technologies currently on the market for municipal
wastewater treatment which might provide a cost advantage for future water repurification
projects, particularly those that employ desalting membranes. Prominent among these
technologies are the Membrane Bioreactors (MBRs), in which membrane filters are substituted
for the sedimentation process in conventional suspended growth biological treatment.
Hence, the City of San Diego was awarded a cooperative agreement by the Bureau of
Reclamation, as part of their Desalination Research and Development Program, to conduct a
preliminary study to eva luate the feasibility of the MBR process for water repurification
projects. One year was allocated for the completion of the feasibility study, which included the
following tasks: literature review of MBRs, worldwide survey of MBRs, preliminary costs
estimates, and preparation for a pilot scale investigation.
The literature review and the survey have shown that the MBR process offers several benefits
over the conventional activated sludge process, including: smaller space and reactor
requirements, better solids removal, disinfection, increased volumetric loading, andlesssludge
production. The preliminary cost eva luation has also shown that the MBR process is cost
competitive with otherconventional wastewater treatmentprocesses. Considering the above,
it is the overall conclusion of the project team that a parallel comparison of several
commercially available MBR systems needs to be performed at pilot-scale in order to
adequately demonstrate the effectiveness of the MBR technology for water repurification. The
principal focus will be to assess the MBR performance for producing water suitable as
feedwater to RO membranes in an adequate, reliable and cost effective manner.
A preliminary plan for the pilot-scale eva luation study was developed. The plan identifies
MBR manufacturers to be eva luated which are Mitsubishi Rayon Corporation, Zenon
Municipal Systems, and Suez-Lyonnaise-des-Eaux. The plan also includes information about
pilot capacity, schematic diagrams, and a description of the pilot testing site at the Aqua 2000
ResearchCenterin Escondido, California. Finally, aproposed approach for implementing the
pilot study is discussed. It is projected that 24 months will be required to conduct Phase II of
the project, with 12, month allocated for the operation of the pilot units.