Temperature-phased anaerobic digestion (TPAD) to obtain Class A biosolids. A discontinuous study

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 2010 Spain English Publisher:Elsevier BVJournal:Bioresource Technology, volume 101, pages 65-70 (issn: 0960-8524,

Copyright policy )

Authors: Riau, Víctor; Rubia, M. Ángeles de la; Pérez, Montserrat;

doi: 10.1016/j.biortech.2009.07.072 , 10.1016/j.biortech.2009.11.101

pmid: 20042328 , 19695872

handle: 10261/54672

Temperature-phased anaerobic digestion (TPAD) to obtain Class A biosolids. A discontinuous study

- Summary
- Subjects
- Metrics

Abstract

Regulations regarding the land application of sewage sludge require the performance of highly efficient treatments for pathogen reduction, such as temperature-phased anaerobic digestion (TPAD). Several semi-continuous experiments with different solid residence times (SRTs) have been made to find the best combination - TPAD 15/15, TPAD 5/15, TPAD 3/15 or TPAD 3/12. TPAD systems showed better performance in terms of VS destruction, gas production, sludge dewaterability, and process stability at total SRT of 15 days, compared with single-stage mesophilic or thermophilic digestion at the same SRT. Average VS reductions (VSR) using the overall TPAD 5/15 (78%), TPAD 3/15 (87%), and TPAD 3/12 (87%) were significantly higher than mesophilic control operating with an SRT of 15 days (40% VSR). The best results were obtained for TPAD 3/15 with 0.62 LCH(4) g(-1) VS(r), faecal coliform 10(3) MPN/g TS, and Salmonella spp. 1 MPN/4 g TS. Although both TPAD 3/15 and TPAD 3/12 were efficient enough to obtain Class A biosolids.

Country

Spain

Related Organizations

Keywords

Chromatography, Gas, Time Factors, Sewage, Temperature, Waste Disposal, Fluid, Phase Transition, Water Purification, Bacteria, Anaerobic, Bioreactors, Anaerobic digestion, Class A biosolid, Sewage sludge, Thermophilic-mesophilic-phase, Methane, Water Pollutants, Chemical

Impact byBIP!

	selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	156
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 1%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%