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Reverse osmosis processing device

A treatment device and reverse osmosis technology, which is applied in the direction of osmosis/dialysis water/sewage treatment, reverse osmosis, water/sewage treatment, etc., can solve problems such as expansion, uneven water penetration, and increased power required to reduce costs Effect

Inactive Publication Date: 2013-09-25
HITACHI LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, if Figure 14 As shown, the amount of permeated water in the pressurized container 224 is not uniform, so the required power increases, and the contamination of the RO membrane element on the water supply side spreads.

Method used

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Embodiment Construction

[0055] Next, preferred embodiments of the present invention will be described with reference to the drawings. The present invention will be described using the following preferred embodiments, but it can be changed in various ways 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.

[0056] 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 in the present invention can be used in systems that perform reverse osmosis treatment of water to be treated, such as wastewater reuse, pure water production, desalination of concentrated brine, desalination of seawater, and the like.

[0057] The desalination treatment system 20 shown in this figure is composed of a tank 12 storing water...

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Abstract

This reverse osmosis processing device (10) is provided with: a pressurized vessel (24); an inlet tube (56) that supplies water to be processed to one end of the pressurized vessel (24); a concentrated water discharging tube (62) that discharges concentrated water to the other end of the pressurized vessel (24); a plurality of reverse osmosis membrane elements (22) disposed within the pressurized vessel (24) and provided with a reverse osmosis membrane; a water collecting piping (34) that connects the plurality of reverse osmosis membrane elements (22) in series within the pressurized vessel (24) and through which permeated water that has passed through the reverse osmosis membrane flows; a first discharge tube (58) that discharges the permeated water on the concentrated water discharging tube (62) side of the pressurized vessel (24); and a resistance piping (90) on the inlet tube (56) side within the water collection piping (34).

Description

technical field [0001] The present invention relates to a reverse osmosis treatment device, in particular to a reverse osmosis treatment device which eliminates the inhomogeneity of permeated water of a supply water side element and a concentrated water side element. 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 13 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 . Feed water is supplied from one side of the desalination treatment apparatus by a high-pressure pump, and pressurizes the inside of the pressure vessel 224 according to the opening degree of a valve provided on the concentrated water side. When th...

Claims

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Application Information

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IPC IPC(8): B01D61/10B01D63/10C02F1/44
CPCB01D61/025B01D63/12B01D2311/06B01D2311/14B01D2313/19C02F1/441B01D63/107
Inventor 北村光太郎大西真人铃木一隆
Owner HITACHI LTD
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