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Process for increased biogas production and energy efficient hygienisation of sludge; Process foer oekad biogasproduktion och energieffektiv hygienisering av slam

Abstract

In Sweden there is a need to increase biogas production to meet the rising demand for biomethane as vehicle fuel but the amount of domestically available biomass to digest is limited. One way to help meet current and future demand for methane is to enhance the digestion of the substrates that are currently utilized. Vaexjoe municipality in southern Sweden is in the process of upgrading their facilities for biogas production at the Sundet waste water treatment plant. Their aim is to produce more biogas in order to meet the demand from an increasing methane-based local transit fleet. This is the backdrop to a joint project between JTI and Vaexjoe municipality where JTI's mobile pilot plant was used to study the possibility of extracting more biogas from the existing sewage sludge. In the future, Vaexjoe municipality also plans to co-digest source separated municipal organics with the sewage sludge, which will likely result in stricter demands in terms of hygienization of all utilized substrates. The goal of the project at hand was to demonstrate the possibility to produce more than enough additional biogas from existing sewage sludge to yield a net energy profit even with the added energy demand of ensuring the  More>>
Publication Date:
Jul 01, 2012
Product Type:
Technical Report
Report Number:
SGC-R-269
Resource Relation:
Other Information: refs., 20 figs., 21 tabs.
Subject:
09 BIOMASS FUELS; BIOGAS PROCESS; METHANE; WASTE WATER; SEWAGE SLUDGE; DIGESTION; STERILIZATION
OSTI ID:
22079125
Research Organizations:
Svenskt Gastekniskt Center (SGC), Malmoe (Sweden)
Country of Origin:
Sweden
Language:
Swedish
Other Identifying Numbers:
Other: ISSN 1102-7371; TRN: SE1307084
Availability:
Commercial reproduction prohibited. Available from ETDE as OSTI ID: 22079125; Also available from: http://www.sgc.se
Submitting Site:
SWD
Size:
74 page(s)
Announcement Date:
Apr 04, 2013

Citation Formats

Rogstrand, Gustav, Olsson, Henrik, Andersson Chan, Anneli, Johansson, Niklas, and Edstroem, Mats. Process for increased biogas production and energy efficient hygienisation of sludge; Process foer oekad biogasproduktion och energieffektiv hygienisering av slam. Sweden: N. p., 2012. Web.
Rogstrand, Gustav, Olsson, Henrik, Andersson Chan, Anneli, Johansson, Niklas, & Edstroem, Mats. Process for increased biogas production and energy efficient hygienisation of sludge; Process foer oekad biogasproduktion och energieffektiv hygienisering av slam. Sweden.
Rogstrand, Gustav, Olsson, Henrik, Andersson Chan, Anneli, Johansson, Niklas, and Edstroem, Mats. 2012. "Process for increased biogas production and energy efficient hygienisation of sludge; Process foer oekad biogasproduktion och energieffektiv hygienisering av slam." Sweden.
@misc{etde_22079125,
title = {Process for increased biogas production and energy efficient hygienisation of sludge; Process foer oekad biogasproduktion och energieffektiv hygienisering av slam}
author = {Rogstrand, Gustav, Olsson, Henrik, Andersson Chan, Anneli, Johansson, Niklas, and Edstroem, Mats}
abstractNote = {In Sweden there is a need to increase biogas production to meet the rising demand for biomethane as vehicle fuel but the amount of domestically available biomass to digest is limited. One way to help meet current and future demand for methane is to enhance the digestion of the substrates that are currently utilized. Vaexjoe municipality in southern Sweden is in the process of upgrading their facilities for biogas production at the Sundet waste water treatment plant. Their aim is to produce more biogas in order to meet the demand from an increasing methane-based local transit fleet. This is the backdrop to a joint project between JTI and Vaexjoe municipality where JTI's mobile pilot plant was used to study the possibility of extracting more biogas from the existing sewage sludge. In the future, Vaexjoe municipality also plans to co-digest source separated municipal organics with the sewage sludge, which will likely result in stricter demands in terms of hygienization of all utilized substrates. The goal of the project at hand was to demonstrate the possibility to produce more than enough additional biogas from existing sewage sludge to yield a net energy profit even with the added energy demand of ensuring the hygienic quality of the digestate through conventional pasteurization. Although the project was focused on the conditions at Sundet waste water treatment plant, the issues dealt with are general and the results are relevant to many waste water treatment plants in Sweden. The research, conducted between June 2011 and January 2012 were divided into two trials. The two trials, described schematically in Figure 1, represented two possible process configurations designed to reach the goal stated above. The key component of both process configurations is the addition of a post-digestion step to the existing single-step digestion process. In trial 1 the additional feature of dewatering between the two digestion steps served to reduce energy demand for pasteurization and increase the organic loading rate of the post-digester.}
place = {Sweden}
year = {2012}
month = {Jul}
}