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Ask the Wastewater Expert

Daniel L. Theobald

Known in the industry as “Wastewater Dan,” Daniel L. Theobald, proprietor of Environmental Services, is a professional wastewater and safety consultant/trainer. He has more than 24 years of hands-on industry experience operating many variants of wastewater treatment processing units and is eager to share with others his knowledge about water conservation (www.Conserve-On-Water.com).

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In primary treatment, what are the pH process controls for treating wastewater?

The measure of free hydrogen activity in water -- called “pH” for “potential for hydrogen” -- is undoubtedly the most important and most-used wastewater treatment measure. Dependence on pH as a measure relevant to water quality and its control occurs in practically every phase of water supply and wastewater treatment, including acid-base neutralization, water softening, precipitation, coagulation, disinfection and corrosion control.
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What are process controls for treating wastewater in the textile industry?

The textile industry makes woven fabric from either natural or synthetic fiber. Natural fibers are vegetable, such as cotton, or animal, e.g., wool and silk. Synthetic fibers include rayon, nylon, acrylic, or polyester.
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What are the process controls for treating wastewater in the pulp and paper industry?

Large volumes of wastewater -- with elevated physical solids and organic waste concentrations -- are generated in pulp & paper making. Wastewater treating and discharge, and sludge-waste disposal, all have their challenges.
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What are process controls for treating wastewater in the dairy industry?

Dairy wastewater has a high organic load, requiring biological treatment for permit-compliant discharge. Successful, consistent biological treatment in turn requires stringent controls on primary treated wastewater, preceding dairy-waste biological treatment.
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Microorganisms in activated sludge

Someone recently asked, 'What microorganisms are in activated sludge?'
In the activated sludge process, microorganisms are mixed with waste water. The microorganisms come in contact with the biodegradable materials in the wastewater and consume them as food.
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Productivity Perspectives

Kevin Parker

Kevin Parker, editorial director of Processing magazine, has been writing about process industry, automation and information-technology markets for more than 20 years.

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The saga of the machine segues into the 21st century

Rockwell Automation was once a white-shirt-and-tie engineering company, just as IBM was a white-shirt-and-tie information-technology company. Other points of comparison between the two apply as well, including the importance of “services” to their continuing success. There are some reasons why this is the case.
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GE CEO Jeff Immelt says software, analytics are path to zero unplanned downtime

Just a few moments before the young General Electric (GE) executive standing at the podium introduced his CEO Jeffery Immelt, he mentioned that the GE event they were attending was not meant to be a sales pitch. No sooner had Immelt hopped onto the stage following his introduction then he vociferously disagreed. “I’m here to sell,” he said.
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3rd party services growth a spur needed to quicken technology adoption

By buying Invensys, a big chunk of today’s multi-billion-dollar industrial-automation software market is in the hands of Schneider Electric — including the Wonderware, SimSci and Avantis brands.
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Process goods makers seek rational sub-groups of data, amenable to analysis

Manufacturing intelligence vendor celebrates 25th year in business
The many different kinds of industrial software that emerged the last 30 years are mostly absorbed by now into supervisory-control, product life-cycle or enterprise-planning software suites.
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US natural gas production hits record high, drives growth in equipment markets

Natural gas production in the United States increased in August for the eighth consecutive month, according to just-released figures from Bentek Energy, an analytics and forecasting unit of Platts.
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