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Description
Settleability Problems and Loss of Solids in the Activated Sludge ProcessCondition: BRAND NEW ISBN: 9780471206941 Year: 2002 Publisher: John Wiley & Sons Inc (US) Pages: 192 Description: The activated sludge process is the most versatile, commonly used wastewater treatment system in North America; however, many activated sludge processes frequently experience operational problems related to poor compaction or settleability of secondary solids and loss of secondary solids from the clarifier. Eschewing the technical jargon
Condition: BRAND NEWISBN: 9780471206941
Year: 2002
Publisher: John Wiley & Sons Inc (US)
Pages: 192
Description:
The activated sludge process is the most versatile, commonly used
wastewater treatment system in North America; however, many
activated sludge processes frequently experience operational
problems related to poor compaction or settleability of secondary
solids and loss of secondary solids from the clarifier. Eschewing
the technical jargon and copious chemical equations found in the
majority of wastewater studies, Settleability Problems and
Loss of Solids in the Activated Sludge Process speaks
directly to plant operators, showing them how to identify and solve
common problems and achieve maximum efficiency.
Michael H. Gerardi?s hands-on guide addresses the most
common plant operational problems, such as increased costs, loss of
treatment efficiency, and permit violations. Using numerous tables
and illustrations, Settleability Problems provides microscopic and
analytical techniques for troubleshooting and identifying the
conditions responsible for settleability problems and loss of
solids. It includes pictures of wet mounts and smears of acceptable
and unacceptable microscopic conditions of the activated sludge and
presents corrective measures for operational problems. Chapters
include:
Undesired Filamentous Growth
Nutrient-Deficient Floc Particles
Denitrification
Slug Discharge of Soluble cBOD
Viscous Bulking or Zoogloeal Growth
Production and Accumulation of Foam and Scum
Volume II in the series, Settleability Problems will prove to be
of unparalleled value to wastewater treatment plant operators as
well as students of wastewater microbiology.
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Product Reviews
★★★★★ 5
Good quality, very adorable solution.
Color: Black, Size: 1 Large Panel
Easy to put together and take apart. Wish it had a storage bag of some sort—that would be very helpful. Used it for our mom while she was on hospice at home. The wheels made it very easy to move around as necessary. Nice and tall and wide for privacy. Highly recommend.
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Reviewed in the United States on September 7, 2025
★★★★★ 4
Nice, large room divider for privacy
Color: Black, Size: 1 Large Panel
Easy to assemble. Fabric screen covers the large frame very well and provides privacy by separating spaces. I would not exactly call it sturdy, but it does the job and stands freely with no problem. It’s lightweight and portable if you need to move it. Came with a screwdriver and wrench tool for assembly.
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Reviewed in the United States on March 7, 2026
★★★★★ 5
Solid divider
Color: Black, Size: 1 Large Panel
Easy to assemble, is not see through and seems sturdy. The optional wheels are a nice touch.
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Reviewed in the United States on March 18, 2026
★★★★★ 5
Perfect solution
Color: Black, Size: 2 Large Panels, Color: Black, Size: 2 Large Panels
Was a perfect solution to blocking off a part of a room for guest stay. My only wish was a bag for it to go in while not in use. Right now we’ve got it tucked away in a corner where it’s waiting to be used again.
I put one wheel through a wooden partition gate (for dogs) and pushed a couch up against it and it held great keeping young kids out of the room. Though the dog figured it out pretty quickly haha
I love the fabric in between the sections as well as the fact that they can be completely separate for individual use as needed. Makes it very useful in more scenarios.
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Good Tall Screen
Color: Grey, Size: 1 Large Panel
Easy to roll, easy to assemble with two people, great height, blocks direct sun well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
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