Preliminary development and manufacturing of radioactive sewage purification device
10.11763/j.issn.2095-2619.2020.02.014
- Author:
Xiaoyong LIU
1
,
2
;
Jianting LI
;
Jie LI
;
Yongshun HUANG
1
,
2
;
Xiaoshan LU
;
Yanbing LIU
1
,
2
;
Fan CUI
1
,
2
;
Ming DONG
1
,
2
;
Zhanhong YANG
1
,
2
;
Jiaxin JIANG
1
,
2
;
Jian HUANG
1
,
2
;
Jiabin CHEN
1
,
2
Author Information
1. Guangdong Province Hospital for Occupational Disease Prevention and Treatment
2. Guangdong Provincial Key Laboratory of Occupational Disease Prevention and Treatment Guangzhou,Guangdong 510300,China
- Publication Type:Journal Article
- Keywords:
Radioactive sewage;
Filtration;
Purification;
Nuclide;
Iodine;
Potassium;
Strontium;
Cesium
- From:
China Occupational Medicine
2020;47(02):196-199
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE: To develop a radioactive sewage purification device that can effectively filter the nuclides in low-level nuclide-contaminated wastewater. METHODS: The radioactive sewage purification device was composed of lifting pump, stack filter, multi-medium filter, security filter, tubular ultrafiltration membrane, high-pressure pump and reverse osmotic membrane. The combined process of adsorption-ultrafiltration-reverse osmosis was used to separate radioactive elements from wastewater by reverse osmosis membrane separation system. Through two-stage multi-medium filter circulation system circulation treatment, radioactive sewage was purified. The flow rate of water treatment is 20 L/min. The filtration efficiency and purification efficiency of the device were tested by filtration experiments on elements containing radionuclide and purification experiments on radionuclide.RESULTS: The filtration efficiency on iodine, potassium, strontium and cesium, that are the common elements in radioactive sewage samples were 97.88%, 98.38%, 99.99% and 99.80%, respectively. The single purification efficiency of radionuclide ~(40)K in low-level radioactive sewage was over 90.00%. CONCLUSION: The device has high filtering efficiency for common elements such as iodine, potassium, strontium and cesium in sewage and high removal rate of radioactive activity for sewage containing ~(40)K. It can be further optimized and transformed into a suitable radioactive sewage water purifier.
