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Decentralized two-stage sewage treatment by chemical-biological flocculation combined with microalgae biofilm for nutrient immobilization in a roof installed parallel plate reactor.
- Source :
-
Bioresource technology [Bioresour Technol] 2013 Feb; Vol. 130, pp. 152-60. Date of Electronic Publication: 2012 Dec 08. - Publication Year :
- 2013
-
Abstract
- In this lab-scale study, domestic wastewater is subjected to a chemical biological adsorption (A-stage), followed by treatment in an innovative roof installed parallel plate microalgae biofilm reactor for nutrient immobilization (I-stage). The A-stage process was operated at a hydraulic retention time (HRT) of 1h and a solid retention time of 1day (FeSO(4) as flocculant). The I-stage, which consequently received the effluent of the A-stage process, was operated at an HRT of 1day and exposed to natural light. The overall system removed on average 74% of the total chemical oxygen demand, 82% of the total suspended solids, 67% of the total nitrogen and 96% of the total phosphorous in the wastewater. The design involves a relatively low capital and operating cost which is in the order of 0.5€/m(3) wastewater treated. These aspects suggest that the A/I process can be used as a decentralized domestic wastewater treatment system.<br /> (Copyright © 2012 Elsevier Ltd. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1873-2976
- Volume :
- 130
- Database :
- MEDLINE
- Journal :
- Bioresource technology
- Publication Type :
- Academic Journal
- Accession number :
- 23306123
- Full Text :
- https://doi.org/10.1016/j.biortech.2012.11.128