CN204434403U

CN204434403U - A kind of novel reverse osmosis concentrated Water Sproading reutilization system

Info

Publication number: CN204434403U
Application number: CN201520007615.7U
Authority: CN
Inventors: 高学理; 孙湛童; 刘瑞聪; 刘美君; 徐源; 于德强; 单宝田; 张秀杰
Original assignee: QINGDAO HAIDA NORTH ENERGY AND ENVIRONMENT Co Ltd
Current assignee: QINGDAO HAIDA NORTH ENERGY AND ENVIRONMENT CO., LTD.
Priority date: 2015-01-07
Filing date: 2015-01-07
Publication date: 2015-07-01
Anticipated expiration: 2025-01-07

Abstract

The utility model discloses a kind of novel reverse osmosis concentrated Water Sproading reutilization system, belong to water-treatment technology field.It comprises electrodialysis system, reverse osmosis or nanofiltration system, degassing film system, EDI or mixed-bed system.In process, first salts contg in reverse osmosis concentrated water reduces by electrodialysis system, reach reverse osmosis or the requirement of nanofiltration system influent quality, then dense water is entered further reverse osmosis or nanofiltration system process removal ion, then dense water is degassed further through degassing film system again, ion content in reduction water, eventually passes EDI or dense water treatment is become the de-mineralized water of low ion concns by mixed-bed system.This system energy consumption is low, the rate of recovery of the rear reverse osmosis concentrated water of process reaches more than 90%, greatly reduces the discharge of dense water, avoids environmental pollution.

Description

A kind of novel reverse osmosis concentrated Water Sproading reutilization system

Technical field

The utility model relates to a kind of water treatment system, is specifically related to a kind of novel reverse osmosis concentrated Water Sproading reutilization system.

Background technology

In recent years, reverse osmosis technology is widely used in multiple fields such as oil, chemical industry, electric power, metallurgy, electronics, pharmacy, food, municipal water supply, reusing sewage, becomes one of important technology in water treatment procedure.In reverse osmosis system engineering, according to the difference of influent quality, the rate of recovery is generally all between 45% ~ 80%.The process problem of the lower rate of recovery and a large amount of high density reverse osmosis concentrated water becomes the bottleneck that reverse osmosis technology further develops.How to recycle reverse osmosis concentrated water become process system design in important technological problems.

Most importantly process reverse osmosis concentrated water reduces the saltiness of dense water, and conventional method has evaporation, electrodialytic technique.Consume a large amount of energy in evaporative process, be not suitable for industrial-scale application.Electrodialytic technique utilizes the selective penetrated property of ion-exchange membrane under the effect of electric field, remove ion in solution.But due to the existence of concentration polarization phenomenon, in electrodialysis process process, easily occur that fouling causes unit consumption of energy to increase, and it is lower to produce water concentration, unit consumption of energy is larger, is not suitable for solution to be directly reduced to Low-salinity from high salinity.

Utility model content

The purpose of this utility model is that the reverse osmosis concentrated cost of water treatment for existing in prior art is high, is not suitable for the problem of large-scale industrial application, proposes a kind of efficient, energy-conservation reverse osmosis concentrated water recycling system.

For reaching this object, the utility model by the following technical solutions:

A kind of novel reverse osmosis concentrated Water Sproading reutilization system, comprises electrodialysis system, reverse osmosis or nanofiltration system, degassing film system, EDI or mixed-bed system.

Further, electrodialysis system comprises cartridge filter, topping-up pump, water tank and electrodialysis unit.

Further, reverse osmosis or nanofiltration system comprise water tank, high-pressure pump, compression system, cartridge filter and reverse osmosis or nanofiltration device.

Further, electrodialysis system freshwater room water outlet is connected with reverse osmosis or nanofiltration system water-in, reverse osmosis or nanofiltration system are produced water water outlet and are connected with degassing film system water-in, degassing film system water outlet is connected with EDI or mixed-bed system water-in, reverse osmosis or the dense water water outlet of nanofiltration system are connected with electrodialysis system water-in, and EDI or the dense water water outlet of mixed-bed system are connected with reverse osmosis or nanofiltration system water-in.

Further, described electrodialysis system is pole-reversing electroosmosis system.

In process, first salts contg in reverse osmosis concentrated water reduces by electrodialysis system, reach reverse osmosis or the requirement of nanofiltration system influent quality, then dense water is entered further reverse osmosis or nanofiltration system process removal ion, then dense water is degassed further through degassing film system again, ion content in reduction water, eventually passes EDI or dense water treatment is become the de-mineralized water of low ion concns by mixed-bed system.

The characteristic that first the utility model utilizes electrodialytic technique effectively to remove ion, not only removes the organic components in reverse osmosis concentrated water, reaches the object desalinating dense water simultaneously, and reduces dense water again through the energy consumption of reverse osmosis system or nanofiltration system; Then degassing film system is adopted to replace traditional two-stage reverse osmosis system to make process more energy-conservation; Finally by EDI or mixed-bed system by dense water treatment to the concentration needed, after process, the rate of recovery of reverse osmosis concentrated water reaches more than 90%

Accompanying drawing explanation

Fig. 1 is that reverse osmosis concentrated water recovering process flow figure is reclaimed in described electrodialysis;

Specific embodiments:

Embodiment 1

As shown in Figure 1, a kind of novel reverse osmosis concentrated Water Sproading reutilization system, comprises pole-reversing electroosmosis system, reverse osmosis or nanofiltration system, degassing film system, EDI or mixed-bed system.Pole-reversing electroosmosis system comprises cartridge filter, topping-up pump, water tank and electrodialysis unit.Reverse osmosis or nanofiltration system comprise water tank, high-pressure pump, compression system, cartridge filter and reverse osmosis or nanofiltration device.

Pole-reversing electroosmosis system freshwater room water outlet is connected with reverse osmosis or nanofiltration system water-in, reverse osmosis or nanofiltration system are produced water water outlet and are connected with degassing film system water-in, degassing film system water outlet is connected with EDI or mixed-bed system water-in, reverse osmosis or the dense water water outlet of nanofiltration system are connected with electrodialysis system water-in, and EDI or the dense water water outlet of mixed-bed system are connected with reverse osmosis or nanofiltration system water-in.

In process, first salts contg in reverse osmosis concentrated water reduces by pole-reversing electroosmosis system, reach reverse osmosis or the requirement of nanofiltration system influent quality, then dense water is entered further reverse osmosis or nanofiltration system process removal ion, then dense water is degassed further through degassing film system again, ion content in reduction water, eventually passes EDI or dense water treatment is become the de-mineralized water of low ion concns by mixed-bed system.

Pole-reversing electroosmosis device is adopted can effectively to avoid in process due to scale problems that concentration polarization causes.In process, reverse osmosis or the dense water of nanofiltration system and EDI or the dense water of mixed-bed system return upper level treating processes respectively, and achieve circular treatment, only have the concentrated water discharge of pole-reversing electroosmosis system in whole process, therefore dense Water Sproading rate can reach more than 90%.

Claims

1. a novel reverse osmosis concentrated Water Sproading reutilization system, is characterized in that, comprise electrodialysis system, reverse osmosis or nanofiltration system, degassing film system, EDI or mixed-bed system; Electrodialysis system freshwater room water outlet is connected with reverse osmosis or nanofiltration system water-in, reverse osmosis or nanofiltration system are produced water water outlet and are connected with degassing film system water-in, degassing film system water outlet is connected with EDI or mixed-bed system water-in, reverse osmosis or the dense water water outlet of nanofiltration system are connected with electrodialysis system water-in, and EDI or the dense water water outlet of mixed-bed system are connected with reverse osmosis or nanofiltration system water-in.

2. novel reverse osmosis concentrated Water Sproading reutilization system according to claim 1, it is characterized in that, described electrodialysis system is pole-reversing electroosmosis system.