高集積型MBR膜モジュール（Toray MBR NHPAシリーズ）

抄録

Membrane bioreactors (MBRs) have been widely applied in various types of wastewater treatment systems due to its features such as complete separation of activated sludge and treated water. Toray has commercialized flat sheet membranes with low fouling properties and excellent water permeabilities. In order to highly utilize the performance of membranes, Toray developed new modules named NHPA series. In NHPA modules, thinner elements (2 mm thickness) are adopted in which dots–shaped permeate channels made of resin are applied instead of traditional support board, and a packing density of membranes is 1.5 times higher than that of conventional modules, as a result. The new modules also have large varieties of different membrane areas and module sizes to fit for requirements and installation space constraints by customers. Furthermore, the innovative operation support system (named TORAYWISE®) was developed, in which newly developed original simulation technology and sludge image analysis technologies to acquire simulation parameters. These technologies assist MBR stable operation and maintenance by timely monitoring of sludge properties and prediction of the MBR plant performance.