Reverse osmosis membrane method and ion exchanger combining desalinating treatment system and running mode thereof

• Main Authors: YANG SHAOCAI, MIAO YU, HOU YABO, WU ZHE, WU HUI, ZHOU DUO
• Format: Patent
• Language: English
• Published: 25.03.2015
• Subjects: CHEMISTRY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

A reverse osmosis membrane method and ion exchanger combining desalinating treatment system is characterized by comprising a weakly-acidic cation exchanger and a regeneration system thereof, a carbon remover, a reverse osmosis system, a primary mixed bed and a secondary mixed bed which are sequentially connected, wherein the primary mixed bed and the secondary mixed bed always run at the same time through serial connection; an alkaline-adding alkalinizing system is arranged between the carbon remover and the reverse osmosis system; the primary mixed bed and the secondary mixed bed share the regeneration system. The reverse osmosis membrane method and ion exchanger combining desalinating treatment system has the advantages and benefits as follows: A. the reverse osmosis membrane method and ion exchanger combining desalinating treatment system can produce desalinated water of which the water quality reaches that of secondarily-desalinated water; B. the reverse osmosis membrane method and ion exchanger combining desalinating treatment system can achieve a high-efficiency running mode of reverse osmosis, namely the recovery rate reaches 85-90% and a scale inhibitor is not added; C. the reverse osmosis membrane method and ion exchanger combining desalinating treatment system can realize mutual replacement of two-stage mixed ion exchangers so as to achieve the high-efficiency running mode.