Ultra-low pressure reverse osmosis system and method for treating iodine ions in radioactive polluted water by using same

A reverse osmosis and ultra-low pressure technology, applied in the field of water treatment, can solve unfavorable sudden emergency accidents and other problems, achieve good iodine removal effect, broad application prospects, and low energy consumption

Inactive Publication Date: 2019-04-16
TIANJIN UNIV
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, experts and scholars at home and abroad have carried out a series of research on the treatment of radionuclides in water by reverse osmosis technology, but most of them are high-p

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultra-low pressure reverse osmosis system and method for treating iodine ions in radioactive polluted water by using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The raw water containing 15.2mg / L iodine is hydraulically injected into the above-mentioned membrane module, the operating temperature is 20.0°C, the pH value is 7.78, the pressure across the membrane is 0.30MPa, the radioactivity decontamination factor of iodine in the product water is 780, and the system recovery rate is 16.3% .

Embodiment 2

[0038] The raw water containing 15.2mg / L iodine is hydraulically injected into the above-mentioned membrane module, the operating temperature is 22.4°C, the pH value is 7.81, the pressure across the membrane is 0.50MPa, the radioactivity decontamination factor of iodine in the product water is 831, and the system recovery rate is 16.7% .

Embodiment 3

[0040] The raw water containing 15.2mg / L iodine is hydraulically injected into the above membrane module, the operating temperature is 22.1°C, the pH value is 7.92, the pressure across the membrane is 0.70MPa, the radioactivity decontamination factor of iodine in the product water is 916, and the system recovery rate is 16.7% .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides an ultra-low pressure reverse osmosis system, wherein a feeding device is provided with a raw water tank; a stock solution at an outlet of the raw water tank is pressed into a multi-medium filter through a centrifugal pump; the multi-medium filter changes membrane pressure through a multi-stage pump and enables the stock solution to enter a reverse osmosis membrane componentfor treatment; and a concentrated water outlet pipe of the reverse osmosis membrane component is provided with a valve to adjust a standard recovery rate of the system. The invention also discloses amethod for treating iodine ions in radioactive polluted water by adopting the system, which comprises the following steps: under the conditions that the operating pressure is 0.3-0.8MPa, the temperature is 20+/-3 DEG C and the standard recovery rate of the system is 15.0%-17.0%, the maximum radioactive decontamination factor of iodine ions of the reverse osmosis system can reach 920 by using a polyamide roll composite membrane. The method can effectively remove iodine ions in radioactive polluted water, the separation process has no phase change, energy consumption is low and operation can becarried out at normal temperature. The method has wide application prospect in the fields of emergency water supply, radioactive wastewater treatment, nuclear concentration and the like in sudden nuclear accidents.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an ultra-low pressure reverse osmosis system and a method for treating iodide ions in radioactively polluted water. Background technique [0002] In today's increasingly scarce resources, nuclear energy has always been considered as a green and environmentally friendly new energy source. Radioactive elements have been widely used in industry, military, energy, medical and agricultural fields. While nuclear technology brings convenience to people, it also leaves potential safety hazards. The Wentzkell nuclear accident in the UK in 1957, the Three Mile Island nuclear accident in the United States in 1979, the Chernobyl nuclear accident in the former Soviet Union in 1986, and the Fukushima nuclear power plant accident in Japan in 2011 have caused serious harm to the environment, ecology and human health. , and radioactive iodine, as one of the common pollutants ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01D61/08B01D69/12G21F9/06
CPCB01D61/08B01D69/12G21F9/06
Inventor 顾平李志超何利斌张光辉董丽华侯立安
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap