Preliminary development and manufacturing of radioactive sewage purification device / 中国职业医学
China Occupational Medicine
;
(6): 196-199, 2020.
Article
in Chinese
| WPRIM
| ID: wpr-881886
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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
China Occupational Medicine
Year:
2020
Type:
Article
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