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Solenoid Valves for water treatment

Maintenance tasks for a water treatment facility

Solenoid Valves are part of a complex system in a water treatment facility

Clean water is a necessity for us to protect human health and the environment. Water treatment facilities are essential in supporting our modern life. Common water treatment facilities include wastewater treatment facilities, which include primary, secondary and tertiary facilities, seawater desalination, particle filtration, and sewage clarification. Water treatment facilities are a complex network of tanks, pipes, pumps, valves, and filters. Most facilities are aging in the USA and across the world. With a growing demand for clean water supply and treatment of water with more and more toxic and hazardous materials, ensuring these facilities operate efficiently and reliably is critical.

The engineers at these facilities ensure smooth and reliable operation by following regular inspections and preventative maintenance. They are responsible for ensuring the parts they use meet various industry standards and match the specifications recommended by the manufacturers. For example, the valves they utilize in the facility need to match the manufacturer’s recommendation for pressure ratings, the substance flowing through such as sludge, grit, corrosive chemical or PH of the medium, the temperature, the environment, to name a few.  These are considerations for just one of the components of a complex system; however, a failure can result in costly downtime and disruption of service.

Below are suggested tasks that might be included in your operations and maintenance manual.

Examples of Daily Tasks

  • Check and record chemical solution tanks.
  • Check and record water levels in storage tanks.
  • Inspect chemical feed pumps.
  • Check and record chlorine residual at the point of application.
  • Check and record chlorine residual in the distribution system.
  • Inspect booster pump stations.
  • Check and record fluoride concentration in the distribution system.
  • Record pump running times and pump cycle starts.
  • Check instrumentation for proper signal.
  • Inspect heater operation during winter months.
  • Inspect well pumps, motors, and controls.

Examples of Weekly Tasks

  • Inspect chlorine and fluoride testing equipment.
  • Clean pump house and grounds. Make sure fire hydrants (if any) are accessible.
  • Record pumping rate for each well or source water pump.
  • Conduct weekly security check.

Examples of Monthly Tasks

  • Read electric meter at pump house and record.
  • Take appropriate monthly water quality samples.
  • Check and record static and pumping levels of each well.
  • Read all customer meters and compare against total water produced for the month.
  • Inspect well heads.
  • Lubricate locks.
  • Check on-site readings against lab results.

Examples of Semi-Annual and Annual Tasks (They may be performed at different times of the year)

  • Overhaul and calibrate chemical feed pumps, such as O-rings, check valves, and diaphragms.
  • Inspect and clean chemical feed lines and solution tanks.
  • Operate all valves inside the treatment plant and pump house.
  • Review emergency response plans.
  • Inspect chemical safety equipment and repair or replace as needed.
  • Operate all valves inside the treatment plant and pump house.
  • Inspect, clean, and repair control panels in pump house and treatment plant
  • Exercise half of all mainline valves.
  • Inspect and clean chemical feed lines and solution tanks.
  • Calibrate chemical feed pumps.
  • Inspect storage tanks for defects and sanitary deficiencies.
  • Clean storage tanks if necessary.
  • Flush the distribution system and exercise/check all fire hydrant valves.
  • Perform preventive maintenance on treatment plant and pump house buildings.
  • Inspect and clean chemical feed lines and solution tanks.
  • Prepare a demand forecast.
  • Identify and evaluate energy conservation measures (for your utility).
  • Identify and evaluate distribution system leaks.
  • Establish/update water loss mitigation program.
  • Establish/update customer incentive program for water-efficient home devices.
  • Prepare system for winter operation.
  • Make sure unnecessary equipment is properly decommissioned.
  • Inspect and clean chemical feed lines and solution tanks.
  • Calibrate chemical feed pumps.
  • Contact an electrician to check running amps on well pumps.

For a more comprehensive list visit or consult with your local authorities.

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