Eliminated chemical usage in the raw water reservoir

Peer-reviewed

Research by Dr. Orren Schneider et. al.

Eliminated

Copper-based algaecides

Reduced

Operations and maintenance costs

Addressing episodic taste and odor events

Four solar-powered algae control buoys were installed in the Canoe Brook Reservoir #1 in Short Hills, NJ to assess the impact of the system for controlling algae and cyanobacteria in the raw water reservoir. The four buoys operated for five months in the spring/summer 2014.

As an alternative to copper-based algaecides, the use of ultrasonic treatment can be used to control algae. Ultrasonic treatment uses high frequency sound waves to attack the algal cells. The treatment is widely used in commercial and residential applications but is relatively new for municipal raw water reservoirs.

Extensive testing conducted during 2014 showed that the buoys had a significant impact on the algae, reducing algal counts, raw water turbidity and total organic carbon in the water. This improved water quality, enabled the plant operations staff to reduce coagulant consumption by more than 20 percent and reduced the concentration of undesirable T&O-causing compounds in the raw water entering the plant.

Project details

Location New Jersey, US Industry Drinking water Client American Water
  • Improvement in the water quality
  • 22% reduction in chemicals in the WTP
  • 100% chemical reduction in the raw water reservoir
  • Return of investment (ROI) of < 1.8 years

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Applied product

LG Sonic developed the MPC-Buoy specifically for larger water surfaces such as cooling reservoirs and drinking water reservoirs.

MPC-Buoy