Menu
Search
Filters
Close
Menu

Upset Conditions In Anaerobic Digesters In Wastewater Treatment Plants Cause Degradation Of Protective Linings

Upset Conditions In Anaerobic Digesters In Wastewater Treatment Plants Cause Degradation Of Protective Linings
Available for download

Both mesophilic and thermophilic anaerobic digesters are currently being utilized to treat sludge derived from more than typical municipal sewerage sources.  Wastewater treatment plants are accepting septage and sludge from food waste and industrial contributors routinely today.  Receiving these other sources of waste which are extremely high in volatile solids is a source of significant income for the utilities.  

Product Number: 51322-18235-SG
Author: Robert A. (Randy) Nixon
Publication Date: 2022
Industry: Water/Wastewater
$0.00
$20.00
$20.00

Both mesophilic and thermophilic anaerobic digesters are currently being utilized to treat sludge derived from more than typical municipal sewerage sources.  Wastewater treatment plants are accepting septage and sludge from food waste and industrial contributors routinely today.  Receiving these other sources of waste which are extremely high in volatile solids is a source of significant income for the utilities.  However, high volatile solids loading into the digesters can cause out-of-balance biochemical conditions in the digesters.  High volatile fatty acid to alkalinity ratios and low methane production are but a few of the repercussions of these imbalanced conditions.  These process upsets result in high acetic, propionic and other intermediate fatty acids.  These exposures, when sufficiently prolonged, can cause degradation to the polymers in some protective coating systems commonly used successfully in the past. 

Both mesophilic and thermophilic anaerobic digesters are currently being utilized to treat sludge derived from more than typical municipal sewerage sources.  Wastewater treatment plants are accepting septage and sludge from food waste and industrial contributors routinely today.  Receiving these other sources of waste which are extremely high in volatile solids is a source of significant income for the utilities.  However, high volatile solids loading into the digesters can cause out-of-balance biochemical conditions in the digesters.  High volatile fatty acid to alkalinity ratios and low methane production are but a few of the repercussions of these imbalanced conditions.  These process upsets result in high acetic, propionic and other intermediate fatty acids.  These exposures, when sufficiently prolonged, can cause degradation to the polymers in some protective coating systems commonly used successfully in the past. 

Product tags
Also Purchased
Picture for Very High Strength Low Alloy Steels For HPHT Applications
Available for download

Very High Strength Low Alloy Steels For HPHT Applications

Product Number: 51322-17721-SG
Author: Florian Thebault, Julien Pennequin, John Fortaillier, Carine Landier
Publication Date: 2022
$20.00

More and more High Pressure High Temperature (HPHT) sour wells are operated worldwide. Challenging material selection is required for such severe operating conditions.1,2 Very high strength materials, presenting yield strength above 896 MPa (130 ksi), are required for sustaining the pressure. Consequently, even a low amount of H2S in the gas phase may lead to a H2S partial pressure beyond the limit of 3.5 mbar (0.05 psi) established in NACE MR0175 / ISO 15156 standard.3 Indeed, both high yield strengths and partial pressures of H2S contribute to a situation where the risk of Sulfide Stress Cracking (SSC) is high. The present paper is focusing on the SSC resistance of 130 ksi minimum yield strength material developed for covering such HPHT applications.
Picture for 05068 Emerging Corrosion Prevention and Control
Available for download

05068 Emerging Corrosion Prevention and Control Technologies for Wastewater Treatment Plants

Product Number: 51300-05068-SG
ISBN: 05068 2005 CP
Author: Larry D. Stephenson and Ashok Kumar, US Army Engineering Research & Development Center
$20.00
Waterborne Coatings for Water and Wastewater Treatment Plants
Available for download

Waterborne Coatings for Water and Wastewater Treatment Plants

Product Number: 41205-174-SG
Author: Tony Ippoliti
Publication Date: 2005
$20.00

This presentation briefly updates a two-part article printed in Water Engineering & Management in 2001.  It begins with the benefits of waterborne coatings and gives examples of where they may be used.
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support