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Device, system and method for disposing radioactive waste water through forward osmosis

A radioactive wastewater, forward osmosis technology, applied in radioactive purification, nuclear engineering and other directions, can solve the problems of concentration polarization membrane pollution, high equipment requirements, high water pressure, etc., to achieve long replacement cycle, low energy consumption, Overcome the foaming effect

Inactive Publication Date: 2015-07-22
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high water pressure, it has high energy consumption, high equipment requirements, and serious concentration polarization membrane pollution.

Method used

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  • Device, system and method for disposing radioactive waste water through forward osmosis

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In this embodiment, the device for separating cobalt in radioactive waste water by forward osmosis, such as figure 1 As shown, it includes a membrane contact chamber 1, a peristaltic pump 2, a flow meter 3, a waste water tank 4, a draw solution tank 5, and a conductivity meter 6; one side of the membrane contact chamber 1 communicates with the waste water tank 4 through a pipeline to form a circulation loop . The other side of the membrane module 1 communicates with the draw solution tank 5 through a pipeline to form a circulation loop. A peristaltic pump 2 and a flow meter 3 are connected to the two circulation loops formed on both sides of the membrane contact chamber 1 .

[0038] The experiment of separating cobalt in radioactive wastewater by using the above-mentioned device is as follows: add simulated radioactive wastewater with a cobalt ion concentration of 20mg / L into the wastewater tank, with a volume of 1L. Add a sodium chloride solution with a concentration...

Embodiment 2

[0041] In this embodiment, the device for separating cobalt in radioactive waste water by forward osmosis, such as figure 1 As shown, it includes a membrane contact chamber 1, a peristaltic pump 2, a flow meter 3, a waste water tank 4, a draw solution tank 5, and a conductivity meter 6; one side of the membrane contact chamber 1 communicates with the waste water tank 4 through a pipeline to form a circulation loop . The other side of the membrane module 1 communicates with the draw solution tank 5 through a pipeline to form a circulation loop. A peristaltic pump 2 and a flow meter 3 are connected to the two circulation loops formed on both sides of the membrane contact chamber 1 .

[0042] The experiment of separating cobalt from radioactive waste water by using the above device is as follows: add simulated radioactive waste water with cobalt ion concentration of 20mg / L to the waste water tank, and the volume of simulated radioactive waste water in the waste water circulation...

Embodiment 3

[0045] In this embodiment, the device for separating cobalt in radioactive waste water by forward osmosis, such as figure 1 As shown, it includes a membrane contact chamber 1, a peristaltic pump 2, a flow meter 3, a waste water tank 4, a draw solution tank 5, and a conductivity meter 6; one side of the membrane contact chamber 1 communicates with the waste water tank 4 through a pipeline to form a circulation loop . The other side of the membrane module 1 communicates with the draw solution tank 5 through a pipeline to form a circulation loop. A peristaltic pump 2 and a flow meter 3 are connected to the two circulation loops formed on both sides of the membrane contact chamber 1 .

[0046] The experiment of separating cobalt from radioactive waste water by using the above device is as follows: add simulated radioactive waste water with cobalt ion concentration of 20mg / L to the waste water tank, and the volume of simulated radioactive waste water in the waste water circulation...

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Abstract

The invention discloses a device, system and method for disposing radioactive waste water through forward osmosis and aims at solving the problem that the prior art is high in energy consumption. The device comprises a semi-permeable membrane, a sucking chamber and a waste water chamber, wherein water molecules can pass through the semi-permeable membrane, salt ions cannot pass through the semi-permeable membrane, the sucking chamber is used for allowing sucked liquid to pass through, the waste water chamber is used for allowing the radioactive waste water to pass through, and the sucking chamber is partitioned from the waste water chamber through the semi-permeable membrane; the osmotic pressure of the sucked liquid is larger than that of the radioactive waste water. According to the device, system and method for disposing the radioactive waste water through the forward osmosis, the fact that osmotic pressures exist in the sucked liquid and the waste water at the two sides of the membrane is utilized, and water is permeated from the waste water side to the sucked liquid side through the permeable membrane, so that the condensation of the waste water containing cobalt is achieved. By means of the device, system and method for disposing the radioactive waste water through the forward osmosis, potential hazards in the traditional evaporation technology such as foaming, corrosion, scaling and explosion can be effectively overcome, meanwhile, compared with a reverse osmosis method, the method has the advantages of being low in energy consumption, little in membrane pollution, low in quality requirement for input water, long in membrane component replacement cycle and the like.

Description

technical field [0001] The invention relates to a device, system and method for forward osmosis treatment of radioactive wastewater. Background technique [0002] In recent years, my country has accelerated the pace of nuclear power construction. While vigorously developing nuclear power, the treatment of nuclear waste has also attracted more and more attention. In particular, the recent Fukushima nuclear leakage accident in Japan has made people all over the world re-examine the development of nuclear power. Whether the radioactive wastewater discharged from nuclear power plants can be treated effectively in a timely manner has become an important factor restricting the development of nuclear power. [0003] Due to the high cost of final solidification and disposal of radioactive waste, the reduction of waste water is the most critical step in the whole process of radioactive waste water treatment. Nuclear power plants in developed countries mainly use evaporation method,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/04
CPCG21F9/06
Inventor 王建龙吴金玲
Owner TSINGHUA UNIV
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