期刊
WATER SCIENCE AND TECHNOLOGY
卷 78, 期 9, 页码 1925-1936出版社
IWA PUBLISHING
DOI: 10.2166/wst.2018.492
关键词
anaerobic digestion (AD); anaerobic membrane bioreactor (AnMBR); membrane photobioreactor (MPBR); resource recovery; sewage; water resource recovery facility (WRRF)
资金
- Spanish Ministry of Economy and Competitiveness (MINECO) [CTM2014-54980-C2-1-R, CTM2014-54980-C2-2-R]
- European Regional Development Fund (ERDF)
- Spanish Ministry of Education, Culture and Sport via FPU [FPU14/05082, FPU15/02595]
- Spanish Ministry of Economy and Competitiveness via FPI [BES-2015-071884, BES-2015-073403]
- Generalitat Valenciana via VALithornd post-doctoral grants [APOSTD/2014/049, APOSTD/2016/104]
- European Climate KIC association [APIN0057_ 2015-3.6-230_ P066-05]
- Universitat Politecnica de Valencia via a pre-doctoral FPI fellowship
- Spanish Ministry of Economy and Competitiveness via Juan de la Cierva contract [FJCI-2014-21616]
- Generalitat Valenciana [APOTI/2016/059, CPI-16-155]
This research work proposes an innovative water resource recovery facility (WRRF) for the recovery of energy, nutrients and reclaimed water from sewage, which represents a promising approach towards enhanced circular economy scenarios. To this aim, anaerobic technology, microalgae cultivation, and membrane technology were combined in a dedicated platform. The proposed platform produces a high-quality solid- and coliform-free effluent that can be directly discharged to receiving water bodies identified as sensitive areas. Specifically, the content of organic matter, nitrogen and phosphorus in the effluent was 45 mg COD.L-1 , 14.9 mg N.L-1 and 0.5 mg P.L-1 , respectively. Harvested solar energy and carbon dioxide biofixation in the form of microalgae biomass allowed remarkable methane yields (399 STP L CH 4.kg(-1) CODinf ) to be achieved, equivalent to theoretical electricity productions of around 0.52 kWh per m 3 of wastewater entering the WRRF. Furthermore, 26.6% of total nitrogen influent load was recovered as ammonium sulphate, while nitrogen and phosphorus were recovered in the biosolids produced (650 +/- 77 mg N.L-1 and 121.0 +/- 7.2 mg P.L-1).
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