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Enhanced efficiency of industrial-scale anaerobic digestion by the addition of glycosidic enzymes

Recktenwald, Michael LU ; Wawrzynczyk, Joanna LU ; Dey, Estera LU and Norrlöw, Olof LU (2008) IWA Specialist Conference on Facing Sludge Diversities In JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 43(13). p.1536-1540
Abstract
The results of the action of two glycosidic enzymes added to an anaerobic digester processing mixed wastewater sludge are reported in this paper. The experiment was performed at a continuously operating full-scale wastewater treatment plant during a 6-month period. The addition of the enzyme mixture resulted in improved gas production and dewatering properties. Dewatering experiments, both on enzyme-treated and reference sludge on the local centrifuges, indicated that the carbonaceous matter was decreased by 7% in enzyme-treated sludge, and the average dry solids increased from 27% (reference) to 31% in enzyme-treated sludge. The polymer dosage was decreased from 8 to 5 kg/t dry solids. Additionally, practical experiences were gathered... (More)
The results of the action of two glycosidic enzymes added to an anaerobic digester processing mixed wastewater sludge are reported in this paper. The experiment was performed at a continuously operating full-scale wastewater treatment plant during a 6-month period. The addition of the enzyme mixture resulted in improved gas production and dewatering properties. Dewatering experiments, both on enzyme-treated and reference sludge on the local centrifuges, indicated that the carbonaceous matter was decreased by 7% in enzyme-treated sludge, and the average dry solids increased from 27% (reference) to 31% in enzyme-treated sludge. The polymer dosage was decreased from 8 to 5 kg/t dry solids. Additionally, practical experiences were gathered concerning the transformation from static laboratory-scale batch experiments to a dynamic continuous industrial scale setup. Preliminary cost calculations showed beneficial aspects and economical feasibility of enzyme addition to an anaerobic sludge digestion process. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
full-scale, sludge, enzyme addition, anaerobic digestion, biosolids
in
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
volume
43
issue
13
pages
1536 - 1540
publisher
Taylor & Francis
conference name
IWA Specialist Conference on Facing Sludge Diversities
external identifiers
  • wos:000259630000010
  • scopus:52949154354
ISSN
1093-4529
1532-4117
DOI
10.1080/10934520802293693
language
English
LU publication?
yes
id
2df52c75-a3f9-4d6c-8439-dd2a64b2aaf5 (old id 1286689)
date added to LUP
2009-02-10 14:36:46
date last changed
2017-05-28 03:40:49
@inproceedings{2df52c75-a3f9-4d6c-8439-dd2a64b2aaf5,
  abstract     = {The results of the action of two glycosidic enzymes added to an anaerobic digester processing mixed wastewater sludge are reported in this paper. The experiment was performed at a continuously operating full-scale wastewater treatment plant during a 6-month period. The addition of the enzyme mixture resulted in improved gas production and dewatering properties. Dewatering experiments, both on enzyme-treated and reference sludge on the local centrifuges, indicated that the carbonaceous matter was decreased by 7% in enzyme-treated sludge, and the average dry solids increased from 27% (reference) to 31% in enzyme-treated sludge. The polymer dosage was decreased from 8 to 5 kg/t dry solids. Additionally, practical experiences were gathered concerning the transformation from static laboratory-scale batch experiments to a dynamic continuous industrial scale setup. Preliminary cost calculations showed beneficial aspects and economical feasibility of enzyme addition to an anaerobic sludge digestion process.},
  author       = {Recktenwald, Michael and Wawrzynczyk, Joanna and Dey, Estera and Norrlöw, Olof},
  booktitle    = {JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING},
  issn         = {1093-4529},
  keyword      = {full-scale,sludge,enzyme addition,anaerobic digestion,biosolids},
  language     = {eng},
  number       = {13},
  pages        = {1536--1540},
  publisher    = {Taylor & Francis},
  title        = {Enhanced efficiency of industrial-scale anaerobic digestion by the addition of glycosidic enzymes},
  url          = {http://dx.doi.org/10.1080/10934520802293693},
  volume       = {43},
  year         = {2008},
}