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Title: Methane production by attached film

Abstract

A method for purifying wastewater of biodegradable organics by converting the organics to methane and carbon dioxide gases is disclosed, characterized by the use of an anaerobic attached film expanded bed reactor for the reaction process. Dilute organic waste material is initially seeded with a heterogeneous anaerobic bacteria population including a methane-producing bacteria. The seeded organic waste material is introduced into the bottom of the expanded bed reactor which includes a particulate support media coated with a polysaccharide film. A low-velocity upward flow of the organic waste material is established through the bed during which the attached bacterial film reacts with the organic material to produce methane and carbon dioxide gases, purified water, and a small amount of residual effluent material. The residual effluent material is filtered by the film as it flows upwardly through the reactor bed. In a preferred embodiment, partially treated effluent material is recycled from the top of the bed to the bottom of the bed for further treatment. The methane and carbon dioxide gases are then separated from the residual effluent material and purified water.

Inventors:
 [1]
  1. (202 Eastwood Ave., Ithaca, NY 14850)
Issue Date:
Research Org.:
Cornell Univ., Ithaca, NY (USA)
OSTI Identifier:
863958
Patent Number(s):
4284508
Assignee:
Jewell; William J. (202 Eastwood Ave., Ithaca, NY 14850) OSTI
DOE Contract Number:  
EY-76-S-02-2981
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
methane; production; attached; film; method; purifying; wastewater; biodegradable; organics; converting; carbon; dioxide; gases; disclosed; characterized; anaerobic; expanded; bed; reactor; reaction; process; dilute; organic; waste; material; initially; seeded; heterogeneous; bacteria; population; including; methane-producing; introduced; bottom; particulate; support; media; coated; polysaccharide; low-velocity; upward; flow; established; bacterial; reacts; produce; purified; water; amount; residual; effluent; filtered; flows; upwardly; preferred; embodiment; partially; treated; recycled; top; treatment; separated; upward flow; dioxide gas; bed reactor; waste material; carbon dioxide; preferred embodiment; organic waste; organic material; reaction process; anaerobic bacteria; methane production; particulate support; producing bacteria; methane product; oxide gases; expanded bed; flows upward; oxide gas; attached film; /210/

Citation Formats

Jewell, William J. Methane production by attached film. United States: N. p., 1981. Web.
Jewell, William J. Methane production by attached film. United States.
Jewell, William J. Thu . "Methane production by attached film". United States. https://www.osti.gov/servlets/purl/863958.
@article{osti_863958,
title = {Methane production by attached film},
author = {Jewell, William J.},
abstractNote = {A method for purifying wastewater of biodegradable organics by converting the organics to methane and carbon dioxide gases is disclosed, characterized by the use of an anaerobic attached film expanded bed reactor for the reaction process. Dilute organic waste material is initially seeded with a heterogeneous anaerobic bacteria population including a methane-producing bacteria. The seeded organic waste material is introduced into the bottom of the expanded bed reactor which includes a particulate support media coated with a polysaccharide film. A low-velocity upward flow of the organic waste material is established through the bed during which the attached bacterial film reacts with the organic material to produce methane and carbon dioxide gases, purified water, and a small amount of residual effluent material. The residual effluent material is filtered by the film as it flows upwardly through the reactor bed. In a preferred embodiment, partially treated effluent material is recycled from the top of the bed to the bottom of the bed for further treatment. The methane and carbon dioxide gases are then separated from the residual effluent material and purified water.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

Patent:

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