DOmaster - Software for Wastewater Treatment Plants
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.
Unique Features of DOmaster Software
- Control algorithms are based on self-calibrated on-line activated sludge and aerodynamics models.
- Blower control is based on flow demand and valve positions rather than on pressure.
- Sensor and actuator fault detection algorithms prevent the use of faulty data and automatically switch the system to “fail-safe” control.
- The controller automatically notifies operators about potential problems and suggests possible solutions using fuzzy logic methodology combined with non-parametric statistics.
Domaster History
- 2002: The California Energy Commission selects, from a field of 70 applicants, Ekster and Associates, Inc.’s proposal to develop universal DO control software.
- 2003: DOmaster is developed.
- 2004: DOmaster is installed at the 32 MGD Oxnard wastewater treatment plant and is documented to provide a 15 percent energy savings.
Product Guarantees
- Save energy. Energy savings can be forecasted using Ekster and Associates, Inc.’s methodology.
- Provide DO control without valve and blower “hunting.”
- Always inform operators about potential problems related to aeration and suggest possible solutions.
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