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Intelligent Effluent Treatment Control : Week10/1/2011

In this fortnight we are coming up with a concluding article on the topic of 'Saving Electrical Energy in Waste Water Treatment'. In this article, we are giving you some insights on this concept from our experts.

Measuring | Monitoring | Controlling – a complete intelligent solution

In the last article we mentioned that it is possible to have an intelligent algorithm which controls blower operation such that it optimizes aeration on account of change in load either in terms of influent quantity or even the composition of effluent. Optimized and lower operation of blower indirectly increases the life of blower and its rotor as an added advantage in addition to the energy savings.

This concept was implemented at one of the pharmaceutical companies in Goa. Our experts interacted with the user to understand the existing effluent treatment process & study the way aeration was being done.

Condition that existed before: The user assumed that the wastewater treatment process was well in control. The aeration was continuously on & effluent process parameters were not constant. This resulted in excess aeration & instability in the effluent treatment.

Condition that existed after: After the intelligent solution was implemented, following improvements were seen:

  • User could continuously measure effluent parameters
  • User could realize the instability / overshoot of effluent parameters
  • User could precisely control these parameters now
  • This resulted in saving of electrical energy to the tune of @ 20 to 25% (* see note)
  • This also resulted in stability of treated effluent

(*) Note : Readers to note that these savings would vary from plant to plant depending upon the influent characteristics

Trust this series on 'Saving Electrical Energy in Waste Water Treatment' was interesting. In the next fortnight, we will be coming up with some new ideas that deal with 'Scaling Problems' that industries face. There is a huge loss that the industry suffers due to problems of scaling in pipelines & heat exchanger surfaces. We will be talking about one eco-friendly solution to eliminate the scaling problems.