Examining Coagulation and Precoating for Seawater UF/RO System Pretreatment
| Autor: | Gary L. Amy, S. Assiyeh Alizadeh Tabatabai, Maria D. Kennedy, Jan C. Schippers, Jin Wei |
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| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | IDA Journal of Desalination and Water Reuse. 2:58-62 |
| ISSN: | 2051-6452 1947-7953 |
| DOI: | 10.1179/ida.2010.2.4.58 |
| Popis: | Ultrafiltration (UF) is gradually becoming the technology of choice for seawater reverse osmosis (RO) pretreatment because of its ability to provide consistent, high-quality RO feed and its small footprint, among other advantages. However, because of the complexity and cost of coagulation sludge handling and disposal, coagulation as a UF pretreatment is a concern for most plant operators. Although efforts are being made to reduce or eliminate coagulation prior to UF, potential benefits may be overlooked. This study focused on the effect of coagulation conditions and modes of application on UF performance as it relates to hydraulic operation and product water quality. Coagulation was performed in two modes—inline coagulation and precoating. Filtration was performed in unstirred cells through membranes in dead-end constant pressure. UF hydraulic performance was evaluated, and UF permeate quality was characterized in terms of residual phosphate. Although precoating improved hydraulic performance, res... |
| Databáze: | OpenAIRE |
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