Design routines and operation strategies for activated sludge aeration systems have traditionally been based on manual control. By Robert Smith, P.E., BCEE, Ph.D., YSI
Because blowers are run continuously, energy costs associated with the aeration basin are typically the largest expense for wastewater facilities. The wastewater treatment plant in the city of Grand Rapids was looking to reduce aeration energy costs and recently upgraded the facility with a Hach Real-Time Control System. The result was a nearly $60,000 energy efficiency incentive payment from Consumers Energy, and the plant is now on track to save the city more than 735,000 kilowatt hours of electricity and $62,000 annually.
Washington Suburban Sanitary Commission (WSSC) Development Services Group reviews hydraulic plans for approximately 160 proposed development plans per year. This includes water and sewer system extensions as well as approximately 172 small-site utility plans (commercial private systems) that connect to the existing water and sewer network in two large Maryland counties.
Have you ever been trapped in “development hell”? If you’ve been involved in developing software applications, you can probably relate to the feeling. Modern technologies offer many promising possibilities for your enterprise, but the actual process of development can feel endless and painful, especially for control engineers or other professionals who may not have extensive training in software development. In this white paper, learn about the development platform.
Publicly Owned Treatment Works (POTWs) are faced with the challenge of processing the effluent wastes of multiple sources: residential, industrial, and environmental. Under laws governing pretreatment, the ultimate responsibility in determining whether or not industrial effluent meets criteria for treatment belongs to the POTW. Once the POTW has the effluent waste within the confines of its treatment facility, it is accountable to the federal, state, and local regulations governing the quality of the wastewater it discharges into lakes and streams or injects underground. By Myron L Company
Wastewater treatment can be a dirty job — but someone has to do it. At a Canadian wastewater treatment plant (WWTP) serving around 75,000 citizens, between 240 and 300 cubic meters of digested sludge are treated each and every day!
An independent Midwest refiner operates refineries in multiple states with a combined crude oil processing capacity of more than 500,000 barrels per day. The company recently approved a project to improve the safety of its plant and reduce its costs for nitrogen gas used for tank blanketing. Read the full report to learn more.
Storm water runoff from a 37-acre coal storage yard utilized as part of daily operations at an industrial site in Southwestern Pennsylvania posed a problem when the Pennsylvania Department of Environmental Protection (DEP) updated the facility’s NPDES permit.
Industrial pumps consume up to 20% of the world’s energy production and can be responsible for 25 to 50% of a process plant’s energy bill, according to Europump, the Hydraulic Institute and other sources. Nothing moves without them in a process plant, and they are expensive to purchase, maintain and even more to repair or replace. Reducing pump lifecycle costs (their purchase, operation and maintenance) is critical in a process plant optimizing efficiency and product output. The process and the surrounding equipment configuration can be responsible for unnecessary high pump lifecycle costs.
The replacement feeders also cut bisulfite consumption by 30 percent and ended the troublesome maintenance burden for instrumentation tech and plant operators.
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