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Items Tagged with 'activated sludge'

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Control of activated sludge, including troubleshooting

The what and wherefores of a well-known process, simply explained
Activated sludge isn’t a thing, it’s a process. As a sewage and industrial wastewater treatment, it makes use of air and a biological floc composed of bacteria and protozoa.
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Activated-sludge troubleshooting guidelines

Someone recently asked, “What are some troubleshooting guidelines or procedures for overall process control of activated sludge?”
Someone recently asked, “What are some troubleshooting guidelines or procedures for overall process control of activated sludge?”
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Procedures for overall process control of activated sludge

To control activated sludge, you need to “have a handle” either on aeration, sludge-wasting or return-sludge flow. Aeration-rate adjustment is probably the simplest way to go, says Wastewater Dan. But he briefly reviews all three methods in today’s blog.
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The measurement of suspended solids

Someone recently asked, “What are the procedures for measuring sludge concentrations and amounts? How is sludge quality determined?”
Sludge quality can be determined by measuring the solids concentration in various tanks, by solids inventories or by determining the sludge-return and wasting flow rates.
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How sludge settles is a key performance indicator

Someone recently asked, 'What are some procedures for measuring settle-ability of activated sludge?'
Collecting samples, use of equipment for simulating settle-ability and the interpretation of results are all part of measuring activated-sludge settle-ability.
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Air-powered Mixer

Combining proven long-distance circulation technology with clog-free, air-powered pumping, the new GridBee® AP Air-Powered Mixers from Medora Corporation are ideal for mixing activated sludge basins, both aerated and anoxic, having high total suspended solids (TSS).
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