| Autor: |
C H, Xing, X H, Wen, Y, Qian, D, Sun, P S, Klose, X Q, Zhang |
| Rok vydání: |
2003 |
| Předmět: |
|
| Zdroj: |
Water science and technology : a journal of the International Association on Water Pollution Research. 47(1) |
| ISSN: |
0273-1223 |
| Popis: |
This paper presents an investigation on fouling and cleaning of a tubular microfiltration membrane for municipal wastewater reclamation. A bi-level complex model, namely channel clogging and pore plugging, was introduced to elucidate the fouling mechanism. Based on 135 days of microfiltration of activated sludge, a preventive method for channel clogging was reasonably proposed and proven to be effective. Without channel clogging, the operation period was observed a five-fold increase on average, reaching 3-4 weeks. To remove pore plugging, a multi-step chemical cleaning was employed and further optimized in terms of temperature and alkaline concentration. Generally, the chemical cleaning could restore the membrane permeability to higher than 90%. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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