Ekster and Associates, Inc. software

SRTmaster maintains the optimum environment for microorganisms in an activated sludge system and optimum conditions for thickening of the wasted sludge. SRTmaster controls sludge retention time (SRT) also known as sludge age. It does this by using a sophisticated control algorithm that takes into account real time variations in solids inventory in the aeration tanks and in solids to be wasted. Analyzing historical patterns of sludge wasting, SRTmaster also provides stable solid mass loading on the wasted sludge thickening facility while filtering out any erroneous data. SRTmaster is custom-tuned to the customer’s specific activated sludge process. The software will inform operators of potential problems and suggest corrective action.

Improves water quality and saves up to 60% of energy costs by maintaining constant ammonia or dissolved oxygen (DO) concentrations. DOmaster improves water quality and saves up to 15 percent of energy costs. DOmaster is a software program that maintains constant dissolved oxygen concentration (DO) by matching oxygen demand with oxygen supply in real time. It does this by controlling blower/compressor output and airflows or pure oxygen flows to each part of an aeration basin. Its sophisticated control algorithm prevents valve and blower “hunting”; it also notifies operators about unusual patterns in oxygen demand and about DO meters and actuators problems.

Solves operational problems and achieves energy savings of up to 25 percent by selecting optimum DO and SRT targets. OPTImaster automatically selects DO and SRT targets, solves operational problems, and achieves energy savings of up to 25 percent. OPTImaster is a software program, which provides daily recommendations for sludge age (SRT), mixed liquor total suspended solids (MLSS) concentration, and dissolved oxygen (DO) concentration targets or set points. OPTImaster selects set points based on the activated sludge model and past plant performance; these set points minimize energy usage while maintaining the required effluent quality and reliability of operation.

Improves plant reliability, reduces pumping costs, and increases biogas production by maintaining a constant depth of sludge blanket in clarifiers and gravity thickeners. BLANKETmaster improves plant reliability, reduces pumping costs, and increases biogas production. BLANKETmaster is software that automatically maintains constant sludge depth in primary and secondary clarifiers and gravity sludge thickeners. It does this by managing the control of sludge removal based on readings from sludge blanket on-line analyzers and, occasionally, flow meters, using a sophisticated control algorithm that filters out any erroneous data. The software can also inform operators of unusual patterns in sludge blanket depth and suggest corrective action.