Research of Electrochemistry Treatment of Chelated Copper and Nitrate
| Autor: | Kuo-Shu Huang, 黃國書 |
|---|---|
| Rok vydání: | 2009 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 97 As industries in Taiwan bloom in recent years, aside from the environmental impact caused by pollutants, domestic water consumption also has increased greatly to result in drainage of our water resourses. Being water deficiency can affect the economic development, it has been a goal for the industries to develop more practical and economical wastewater treatment and regeneration technologies. This study investigates the effect electrochemical technology has in treating wastewater of chelated copper and nitrate. The research contents include traditional chemistry coagulation, electrocoagulation and electroreduction. The traditional chemistry coagulation mainly discuss the removing result of coagulant kind, coagulant dosage and different pH to the pollutant in water. Electrocoagulation mainly discuss the removing result of residence time, electrode material, original water pH, voltage gradient, original water consistency to the pollutant in water. Electroreduction Operation condition include electrode material, catalyst kind, catalyst dosage, electrolytic consistency of salt bridge. Results show electrocoagulation treatment of wastewater containing chelated copper reached removing rate of 92 % and electrical energy consumption of 5.82×10-3 kWhg-1 (271 dollars/ton) using the electrode aluminum system for 60 minutes. For the electrode iron system, the removing rate is 100 % and the electrical energy consumption is at 0.22×10-3 kWhg-1 (11 dollars/ton) for 10 minutes this demonstrate electrode iron system removes better than electrode aluminum system while treating chelated-copper-containing wastewater. Electrocoagulation treatment of wastewaster containing nitrate results in removing rate approach 90 % and electrical energy consumption of 0.39×10-3 kWhg-1 (17 dollars/ton) using the electrode aluminum system for 30 minutes. As for the electrode iron system, the removing rate is 74 % and the electrical energy consumption is at 1.34×10-3 kWhg-1 (50 dollars/ton), this demonstrate electrode aluminum system removes better than electrode iron system. The electroreduction system treats nitrate-containing wastewater best with the electrode aluminum system. The removing rate of nitrate is approximately 50 % for 60 minutes with the advantage of no sludge production. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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