Monitoring, Predicting, Preventing and Controlling of (toxic) Cyanobacteria Blooms

Transcription

1 Monitoring, Predicting, Preventing and Controlling of (toxic) Cyanobacteria Blooms

2 Company Profile

3 LG Sonic Founded in 1999 Headquarters: The Netherlands Team of 13 ecologists, microbiologists, and environmentalists Installations in more than 50 countries More then installations

4 Vision Reduce chemicals in the water treatment industry Development of ultrasonic water treatment technology to monitor and control algae. Cooperation with several European Universities Environmentally-friendly: Safe for humans and animials

5 LG Sonic - Technology

6 Algae Types Blue-green algae (Cyanobacteria) Green algae

7 Cyanobacteria Blue-green algal blooms (HABs) cause problems: Human illness Taste and odor problems Fish/animal deaths Increase in THM formation

8 Traditional Algae Control Methods Algae control equipment Aerator systems UV treatment Ozone treatment Algae control with certain supplements Sediment Control Algae control by Chemical Dosing Dossring Biological Methods Disadvantages Inefficient for large area s Expensive for large area s High maintenance Not always effective Disadvantages Can be environmentally unfriendly Too expensive for large area s Frequent dosage is needed Expensive on the long term

9 How does LG Sonic s Algae Control work? Algae growth control by creating a sound layer Using specific ultrasound frequencies Effective algae control Hz s Right Frequencies Right Wattage Right Transmitter Treatment of relative large water surfaces. Harmless to humans, animals, fish and aquatic plants Low energy consumption 9

10 Effect of Ultrasound on Cyanobacteria 1. Blue-green algae travel through the water column 2. Ultrasound creates a sound layer in the top layer the water 3. The algae die because a lack of light 4. The algae sink to the bottom and are degraded by the bacteria present 5. No release of toxins

11 MPC-Buoy Complete algae control solution by using ultrasound Sensor package to provide real-time water quality data Control algae in lakes, dams and water reservoirs Reduce TSS and BOD Treatment range of 500m/1600ft in diameter

12 The Concept 2. Predict The collected data is delivered to a server 3. Control Specific ultrasonic parameters to target the algae present 1. Monitor Real-time monitoring of the water quality

13 1. Water Quality Monitoring Different parameters are used to continuously measure the water quality: Clorophyll a Phycocyanin ph Temperature Turbidity Dissolved Oxygen Optional Depth GPS Solar Radiation Others

14 2. Predict Algal Blooms The collected data is delivered in real time via radio, GPRS, or 3G to an online server, named the MPC-View.

15 3. Interactive Algae Control Different parameters are used to continuously measure the water quality: Based on the received information, specific ultrasonic parameters are activited. 4 ultrasonic transmitters for complete 360⁰ sound coverage Treatment range of 500m/1600ft in diameter Integrated aquawiper, automatic cleansing system for the ultrasonic transmitters

16 Applications Lakes Drinking water reservoirs Raw water reservoirs Cooling reservoirs Wastewater lagoons Irrigation reservoirs

17 Award-Winning Innovation Awards received for the successful development and commercialization of the MPC-Buoy Aquatech Innovation Award 2015, Aquatech Amsterdam Going the Extra Mile Award 2015, Northumbrian Water Business Achievement Award 2015, Environmental Business Journal Global TAG Excellence Award 2015, Isle Utilities WssTP Water Innovation Award 2014, Water Innovation Europe Shell LiveWIRE Award 2014, Shell and Dutch Chamber of Commerce

18 Algae control in NJ Drinking Water Reservoir Challenge: Address episodic taste and odor events Primary objective to reduce algae concentrations in reservoir #1 Reduce the concentration of taste and odor causing compounds (geosmin 120 and MIB) Increase the efficiency of the plant Decreasing chemical doses and increase filter run times

19 Current Situation The location: Short Hills, New Jersey Water pumped into reservoir #2 Gravity flow to #1 which feeds the plant Water can be pumped to #3 for storage 1 2

20 Satellite Imagery Situation in August 2013 Estimated Chlorophyll Concentration (mg/l)

21 Current Treatment Use of copper sulfate and Cutrine only partially effective Budget ~$60,000/yr for these chemicals Environmental impacts Addition of chemical causes release of taste and odor metabolites (and possibly toxins) into water column Can lead to development of copper-resistant organisms

22 New Treatment As alternative to copper-based algaecides ultrasonic treatment 4 MPC-Buoy systems installed in reservoir #1, Summer of 2014

23 Results Improvement in the water quality 22% reduction in chemicals ROI of 1.8 jaar 1 June June, 2014 Estimated Chlorophyll Concentratio n (mg/l) Extensive testing conducted during 2014 showed that the installed buoys had a significant impact on the algae, allowing the treatment plant to reduce chemical consumption by more than 20% and reducing the concentration of compounds that can cause undesirable tastes and odors - American Water- Location MPC-Buoy systems

24 Taste and Odors

25 End