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Membrane processes for water recovery and wastewater treatment in the food industry

Lipnizki, Frank LU (2012) In Journal of Harbin Institute of Technology (New Series) p.75-78
Abstract

Despite the efforts to reduce its water consumption, the food industry still requires large amounts of water. Membrane processes have established themselves in the food industry at the beginning of the water loop for preparation of the intake water and at the end water loop for recovery and final treatment of the water. The focus of this paper is on two application studies related to water recovery and water treatment in the food industry. The first study is on water recovery from tank washing water in customized liquid sugar production. During the washing of the tanks, sweet water with 1°-5° Brix sugars is produced which is equivalent to a COD of 5000-25000 mg/L. By reverse osmosis, this sweet water can be separated into a sugar-free... (More)

Despite the efforts to reduce its water consumption, the food industry still requires large amounts of water. Membrane processes have established themselves in the food industry at the beginning of the water loop for preparation of the intake water and at the end water loop for recovery and final treatment of the water. The focus of this paper is on two application studies related to water recovery and water treatment in the food industry. The first study is on water recovery from tank washing water in customized liquid sugar production. During the washing of the tanks, sweet water with 1°-5° Brix sugars is produced which is equivalent to a COD of 5000-25000 mg/L. By reverse osmosis, this sweet water can be separated into a sugar-free permeate for recycling and a concentrate with more than 20° Brix, which can be utilized as animal feed. The second study is on the effluent from production of modified potato starch, which is contaminated with spirochete bacteria resulting in problems in the wastewater treatment plant. By installing a membrane bioreactor, not only is this problem overcome but the general quality of the water at the discharge of the plant is improved. Overall, this paper demonstrates that membrane processes have a large potential in the water recovery and wastewater treatment in the food industry.

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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Food industry, Membrane bioreactor, Starch industry, Sweet water
in
Journal of Harbin Institute of Technology (New Series)
issue
1
pages
4 pages
publisher
Harbin Institute of Technology
external identifiers
  • scopus:84859509866
ISSN
1005-9113
language
English
LU publication?
no
id
544dceef-c011-43b9-aec2-b6bb8f646521
date added to LUP
2017-01-23 13:44:50
date last changed
2017-03-10 14:28:53
@article{544dceef-c011-43b9-aec2-b6bb8f646521,
  abstract     = {<p>Despite the efforts to reduce its water consumption, the food industry still requires large amounts of water. Membrane processes have established themselves in the food industry at the beginning of the water loop for preparation of the intake water and at the end water loop for recovery and final treatment of the water. The focus of this paper is on two application studies related to water recovery and water treatment in the food industry. The first study is on water recovery from tank washing water in customized liquid sugar production. During the washing of the tanks, sweet water with 1°-5° Brix sugars is produced which is equivalent to a COD of 5000-25000 mg/L. By reverse osmosis, this sweet water can be separated into a sugar-free permeate for recycling and a concentrate with more than 20° Brix, which can be utilized as animal feed. The second study is on the effluent from production of modified potato starch, which is contaminated with spirochete bacteria resulting in problems in the wastewater treatment plant. By installing a membrane bioreactor, not only is this problem overcome but the general quality of the water at the discharge of the plant is improved. Overall, this paper demonstrates that membrane processes have a large potential in the water recovery and wastewater treatment in the food industry.</p>},
  author       = {Lipnizki, Frank},
  issn         = {1005-9113},
  keyword      = {Food industry,Membrane bioreactor,Starch industry,Sweet water},
  language     = {eng},
  number       = {1},
  pages        = {75--78},
  publisher    = {Harbin Institute of Technology},
  series       = {Journal of Harbin Institute of Technology (New Series)},
  title        = {Membrane processes for water recovery and wastewater treatment in the food industry},
  year         = {2012},
}