Process Control requires correct interpretation of Control Parameters

It is a well established fact that information relating to key control parameters is essential to optimize wastewater treatment plant performance.  In our experience it is all too common for problems to arise where information is either not generated or, more times than not, not reviewed or interpreted correctly. #ecos saves businesses a lot of...

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Wastewater: Activated Sludge – Common Operating Problems

Information relating to key control parameters is essential if one is to optimize wastewater treatment plant performance. Many business could save themselves a lot of time and money through recording and reviewing information on a regular basis. The establishment of target and optimum ranges for key control parameters can assist in forecasting when non-compliances could...

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Wastewater: Activated Sludge – Bulking

Sludge bulking may be noted through visual observation: Failure of sludge solids to settle in the final clarifier Carryover of solids resulting in high effluent suspended solids Presence of filamentous bacteria (microscopic examination) Increased SVI and disimproved settleability Clear supernatant liquor after prolonged settling Principal causes: Underloading  Dissolved oxygen too low Nutrient deficiency A correction...

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Troubleshooting and Problem Solving: Wastewater and Activated Sludge

Over the years the first thing we have always looked for on projects is the technical data which is required to establish the nature of the issue to be addressed.  This data will provide the basis for addressing the clients requirements including, licence requirements, environmental management and cost-benefit control. Way too often we have found...

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