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Details van artikel 14 van 28 gevonden artikelen
| Titel: |
Landfill leachate treatment with combined uasb and fenton coagulation |
| Auteur: |
Wang, Peng Lau, Ivan W. C. Fang, Herbert H. P. Zhou, Ding |
| Verschenen in: |
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering |
| Paginering: | Jaargang 35 (2000) nr. 10 pagina's 1981-1988 |
| Jaar: |
2000-11 |
| Inhoud: |
A two-stage process was developed for the treatment of landfill leachate in Hong Kong. The leachate contained 15700 mg/L of chemical oxygen demand (COD) and 2300 mg/L of ammonia-nitrogen (NH3-N). In the first stage, it was treated in a UASB (upflow anaerobic sludge blanket) reactor at 37° C. The process removed 89%-91% COD on average within a 6.6 days hydraulic retention period. The UASB effluent, containing 1500 mg/L COD, was then treated in the second stage using a Fenton coagulation process with H2O2 and excess Fe2+. In this process, organic substances were oxidized and precipitated through the Fenton reaction and coagulation. 70% COD of the UASB effluent was further removed. The optimal parameters of the Fenton coagulation process were determined as an initial pH between 4 and 6, mixing for 5-10 min, a Fe2+ concentration of 300 mg/L, and a H2O2 concentration of 200 mg/L. The final effluent contained a 447 mg/L COD, which was acceptable sewer system level according to the present Hong Kong regulations. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 14 van 28 gevonden artikelen
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