Reverse osmosis treatment device

A treatment device and reverse osmosis technology, applied in reverse osmosis, osmosis/dialysis water/sewage treatment, filtration treatment, etc., can solve the problems of RO membrane element pollution, necessary power increase, uneven permeated water, etc.

Inactive Publication Date: 2016-04-27
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, if Figure 13 As shown, the amount of permeated water in the pressurized container 224 is not uniform, resulting in an increase in the necessary power and contamination of the RO membrane element on the water supply side.

Method used

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Embodiment Construction

[0041] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The present invention will be described with the following preferred embodiments, but various changes can be made without departing from the scope of the present invention, and other embodiments other than this embodiment can be utilized. Therefore, all changes within the scope of the present invention are included in the claims.

[0042] figure 1 It is a block diagram of a desalination treatment system 20 incorporating the reverse osmosis treatment device 10 of the embodiment. In addition, the desalination treatment system of the present invention can be used, for example, in a system for performing reverse osmosis treatment on water to be treated, such as wastewater reuse, pure water production, alkaline water desalination, seawater desalination, and the like.

[0043] The desalination treatment system 20 shown in this figure is composed of a water storage ...

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Abstract

The present invention is a reverse osmosis treatment device, comprising a first container (80) for primary treatment of water to be treated and a second container (82) for secondary treatment of the water to be treated after the primary treatment. In the container (80) and the second container (82), one element (22) equipped with a reverse osmosis membrane is arranged, or a plurality of elements (22) equipped with a reverse osmosis membrane connected in series by a water collection pipe are arranged, The first container (80) has a first discharge pipe for discharging permeated water, and a permeated water flow rate adjustment valve (64) connected to the first discharge pipe to adjust the pressure in the first container (80). There is an energy recovery device (150) between the pipe and the permeate flow regulating valve (64).

Description

technical field [0001] The present invention relates to a reverse osmosis treatment device, in particular to a reverse osmosis treatment device for recovering back pressure generated during pressure adjustment. Background technique [0002] In a desalination treatment device using a reverse osmosis membrane (hereinafter referred to as RO (Reverse Osmosis) membrane), in order to utilize reverse osmosis pressure, such as Figure 12 As shown, a plurality of RO membrane elements 222 are arranged in series in a cylindrical pressurized container 224 , and each RO membrane element 222 is connected by a water collection pipe 234 located in the center of the RO membrane elements 222 . The feed water is supplied from one side of the desalination treatment apparatus by a high-pressure pump, and pressurizes the inside of the pressurization container 224 according to the opening degree of a valve provided on the concentrated water side. When the pressurized pressure exceeds the osmotic p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D61/06B01D61/12B01D61/58C02F1/44
CPCC02F1/004C02F1/5245C02F1/76C02F2103/08C02F2201/004C02F2209/03C02F2209/05C02F2209/40C02F2301/08C02F2303/10B01D63/12B01D2313/19B01D2313/24B01D2313/246B01D2317/022B01D2317/027B01D2317/04B01D2319/022Y02W10/30Y02A20/131C02F1/441B01D61/026C02F2101/12
Inventor 北村光太郎吉川慎一宫川浩树
Owner HITACHI LTD
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