Biological Nutrient Removal in Municipal Wastewater Treatment: New Directions in Sustainability
| Autor: | Peter Dold, Dwight Houweling, Zhi-rong Hu |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Energy recovery
Environmental Engineering Waste management Phosphorus Chemical oxygen demand chemistry.chemical_element Activated sludge chemistry Wastewater Environmental Chemistry Environmental science Water treatment Sewage treatment Eutrophication General Environmental Science Civil and Structural Engineering |
| Zdroj: | Journal of Environmental Engineering. 138:307-317 |
| ISSN: | 1943-7870 0733-9372 |
| Popis: | To control eutrophication in receiving water bodies, biological nutrient removal (BNR) of nitrogen and phosphorus has been widely used in wastewater treatment practice, both for the upgrade of existing wastewater treatment facilities and the design of new facilities. However, implementation of BNR activated sludge AS systems presents challenges attributable to the technical complexity of balancing influent chemical oxygen demand (COD) for both biological phosphorus (P) and nitrogen (N) removal. Sludge age and aerated/unaerated mass fractions are identified as key parameters for process optimization. Other key features of selected BNR process configurations are discussed. Emerging concerns about process sustainability and the reduction of carbon footprint are introducing additional challenges in that influent COD, N, and P are increasingly being seen as resources that should be recovered, not simply removed. Energy recovery through sludge digestion is one way of recovering energy from influent wastewater b... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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