碩士 / 國立中興大學 / 環境工程學系所 / 103 / The processing procedure of desalination plants is general film, including the reverse osmosis (RO) and ultrafiltration. The high concentration of brine from concentrated side is the main waste that using film applied in desalination. It will cause ecological damage and environmental pollution if it directly discharged.
Over the past decade, due to the chlorine dioxide (ClO2) has excellent disinfection efficiency and the ability to control disinfection by-products is better than chlorine (Cl2), it has been widely applied to various related fields. The traditional way for preparing chlorine dioxide is pure chemical acidification. But it developed electrochemical technology that using specific chemical substances in anode to prepare high purity and concentration of chlorine dioxide in recent years. Compared to traditional methods, electrochemical technology has advantages such as medication simple, easy operation and continuous output. Based on the main composition of the high concentration of brine is sodium chloride (NaCl) as electrolytic solution used in the production of chlorine, we can produce multiple oxidation agent containing chlorine dioxide and chlorine by specific electrolytic cell and appropriate operating parameters, and achieve the purpose of brine recycling.
This study electrolyzed brine by self-assembly electrolytic equipment to produce the multi-oxidants containing chlorine dioxide and applied in sewage treatment. The results found that increase operating voltage, operating temperature, and the concentration of cathode electrolyte would speed up the output time and increase the concentration. When the operating conditions being 100 g addition of sodium chlorite to brine as anolyte, 12 V operating voltage, 40 ℃ initial temperature, and 0.5% sodium hydroxide as catholyte was the optimum operating parameters. It could produce the concentration of chlorine dioxide about 1150 mg/L. In the part of sewage treatment, it had a good removal of COD, BOD, SS, and total number of colonies.
| Identifer | oai:union.ndltd.org:TW/103NCHU5087022 |
| Date | January 2015 |
| Creators | Yu-Lun Kuan, 關宇倫 |
| Contributors | Yung-Hsu Hsieh, 謝永旭 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 70 |
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