Unlock instant, AI-driven research and patent intelligence for your innovation.

Radioactive wastewater treatment system based on three-dimensional electro-catalysis conductive film distillation

A technology for radioactive wastewater and disposal systems, applied in radioactive purification, nuclear engineering, etc., can solve problems such as pollution and hinder membrane distillation, and achieve the effect of reducing storage space, improving electrode efficiency, and realizing fully automated control.

Active Publication Date: 2021-11-09
YANGZHOU UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, membrane fouling, especially salt crystal fouling, is currently the main obstacle hindering the popularization and application of membrane distillation technology.

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
  • Radioactive wastewater treatment system based on three-dimensional electro-catalysis conductive film distillation
  • Radioactive wastewater treatment system based on three-dimensional electro-catalysis conductive film distillation
  • Radioactive wastewater treatment system based on three-dimensional electro-catalysis conductive film distillation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Such as figure 1 and 2 As shown, a radioactive wastewater treatment system combined with three-dimensional electrocatalysis-conductive membrane distillation technology includes a waste liquid storage tank 1, a pH adjustment tank 12, a sedimentation tank 2, a membrane distillation heating tank 3, and a three-dimensional electrocatalytic conductive membrane connected in sequence The distillation reaction pool 4, the condenser 6 and the clean water pool 5 are connected to form; the connecting pipeline between the waste liquid storage pool 1 and the sedimentation tank 2 is provided with a second sewage pump 9, and the sedimentation pool 2, membrane distillation heating pool 3 and the three-dimensional electrocatalytic conductive film distillation reaction tank 4 are connected by pipelines to form the first circulation system, and the connecting pipeline of the first circulation system is provided with the third sewage pump 24, the fourth sewage pump 29 and the first circula...

Embodiment 2

[0071] The above-mentioned device and process are used to treat medium-level radioactive wastewater produced by a nuclear power plant.

[0072] (1) Pass the medium-level radioactive wastewater produced by the nuclear power plant into the sedimentation tank 2 for chemical precipitation pretreatment, adjust the pH of the waste liquid in the tank to about 3, and control the water temperature at about 35°C;

[0073] (2) After 30 minutes of aeration treatment in the sedimentation tank 2, let it settle for 60 minutes. After the sedimentation, pass the supernatant of the sedimentation tank 2 into the membrane distillation heating tank 3 for heat treatment, and the water temperature is controlled at about 65 ° C;

[0074] (3) After the temperature of the waste liquid in the membrane distillation heating pool 3 rises to 65°C, the hot waste liquid is transported to the three-dimensional electrocatalytic conductive membrane distillation reaction pool 4 through the fourth sewage pump 29 fo...

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 discloses a radioactive wastewater treatment system based on three-dimensional electro-catalysis conductive film distillation. The system comprises a waste liquid storage tank for placing radioactive waste liquid, a sedimentation tank for carrying out a precipitation reaction on radioactive elements in the waste liquid and a chemical precipitator, a membrane distillation heating tank for heating the waste liquid pretreated by the sedimentation tank, a three-dimensional electro-catalysis conducting film distillation reaction tank used for discharging radioactive element flocculent precipitates in the waste liquid and intercepting metal ions and radioactive substances, and a clean water tank used for storing penetrating fluid, and the waste liquid storage tank, the sedimentation tank, the membrane distillation heating tank, the three-dimensional electro-catalysis conducting film distillation reaction tank and the clean water tank are sequentially connected through pipelines. The radioactive wastewater treatment system further comprises a pH regulating tank used for providing acidic conditions for the sedimentation tank. Radioactive wastewater is pretreated by using a chemical precipitation method, and then is further oxidized, flocculated and precipitated through the three-dimensional electro-catalysis conducting film distillation reaction tank to intercept and remove radioactive elements and metal ions in the wastewater, so that the effluent quality is highly purified, and efficient reduction and harmless treatment of the radioactive wastewater is realized; and the system has a feasible practical value and a wide application prospect.

Description

technical field [0001] The invention relates to the field of radioactive wastewater treatment, in particular to a radioactive wastewater treatment system based on three-dimensional electrocatalytic conductive membrane distillation. Background technique [0002] Radioactive wastewater refers to various wastewater discharged from nuclear power plants, nuclear fuel pretreatment and spent fuel reprocessing, and the application of radioisotopes. The types and concentrations of radionuclides, acidity, and other chemical components contained in different wastewater vary greatly. When radioactive waste water enters the environment, it will cause water and soil pollution and may enter the human body through various channels, causing harm to the environment and human beings. [0003] At present, the methods for treating radioactive wastewater produced by nuclear power plants mainly include chemical precipitation, ion exchange, evaporation and concentration, membrane separation, and ad...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/10G21F9/06
CPCG21F9/10G21F9/06
Inventor 刘畅杨文澜纪荣平程浩淼蔡森
Owner YANGZHOU UNIV