期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 126, 期 -, 页码 30-38出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2014.02.013
关键词
Energy consumption; Industrial-scale hollow-fibre membranes; Operating cost; Anaerobic membrane bioreactor (AnMBR); Sulphate-rich urban wastewater
资金
- Spanish Ministry of Economy and Competitiveness jointly with the European Regional Development Fund [CTM2011-28595-C02-01/02]
- Centre for Industrial Technological Development (CDTI) [INNPRONTA IISIS IPT-20111023]
- Spanish Ministry of Economy and Competitiveness
The objective of this study was to evaluate the operating cost of an anaerobic membrane bioreactor (AnMBR) treating sulphate-rich urban wastewater (UWW) at ambient temperature (ranging from 17 to 33 degrees C). To this aim, energy consumption, methane production, and sludge handling and recycling to land were evaluated. The results revealed that optimising specific gas demand with respect to permeate volume (SGDp) and sludge retention time (for given ambient temperature conditions) is essential to maximise energy savings (minimum energy demand: 0.07 kW h m(-3)). Moreover, low/moderate sludge productions were obtained (minimum value: 0.16 kg TSS kg(-1) CODRemoved), which further enhanced the overall operating cost of the plant (minimum value: is an element of 0.011 per m(3) of treated water). The sulphate content in the influent UWW significantly affected the final production of methane and thereby the overall operating cost. Indeed, the evaluated AnMBR system presented energy surplus potential when treating low-sulphate UWW. (C) 2014 Elsevier B.V. All rights reserved.
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