APPARATUS AND METHOD FOR ESTIMATING TREATMENT CAPABILITY OF ONE-WAY TYPE MULTI-STAGE NANO-FILTRATION FACILITY

摘要

PROBLEM TO BE SOLVED: To provide a circulation type nano-filtration testing apparatus with a simple structure and capable of estimating the treatment capability of a one-way type multi-stage nano-filtration facility. SOLUTION: A circulation type apparatus 2, which is a circulation type nano-filtration testing apparatus, reproduces the income and outgo of at least one membrane element at an optional point in a one-way type multi-stage nano-filtration facility. The circulation type apparatus 2 is provided with two membrane elements 21 and 21 same as those in the one-way type multi-stage nano-filtration facility. Supplied water flows in the membrane element 21 in upstream side via a supplied water pipe 25 and a supplied pump 26. A portion or all of the concentrated water produced in the membrane elements 21 and 21 is circulated to the supplied water pipe 25 installed upstream of the supply pump 26 via a circulated water pipe 31. COPYRIGHT: (C)2007,JPO&INPIT