Gas infusion technology solutions for the water treatment industry

Every municipality in the developed world has some form of water and wastewater treatment system. This varies from simple outfalls direct to the ocean to very sophisticated activated sludge plants with multiple unit processes dedicated to converting human waste, industrial effluents and storm runoff into clean water discharges and solids acceptable for some form of reuse. inVentures using its gas inFusion technology, has developed the gPRO system for the prevention and remediation of major algae blooms that negatively affect the water quality for millions of people. The company is currently working with several major water authorities on algae prevention programs by efficiently oxygenating specific regions of the water storage areas. Target Oxygenation prevents the build up of algal masses. Algal masses often require expensive treatment remedies and cause major taste and odor issues within drinking water supplies.

gPRO® can also be very effectively used within the water treatment process to effectively raise or lower the pH using certain gases. The system is very easily controlled and monitored without the storage and handling of large amounts of chemicals.

Within the wastewater industry inVentures has tested BioGRO2® in a wastewater pilot with very good results. The BioGRO2® process provided:

  • Same biological process as conventional systems
  • 100% of O2 supplied is available
  • 1 mg BOD was removed for 1mg O2 supplied
  • Gas transfer 15 times more efficient than conventional equipment
  • 85% reduction in power consumption
  • 85% reduction in return activated sludge (RAS)
  • 35% hydraulic capacity savings (see RAS)
  • Capacity savings allows significant expansion
  • Dramatic odor reduction achieved
  • A system that met / exceeded discharge requirements

inVentures has made the strategic decision to apply the technology to very specific aspects of wastewater including ammonia reduction and sludge filtrate oxygenation as both closely relate to our activities in aquaculture where ammonia is the number one problem all aquaculture producers face.

BioGRO2® for Ammonia Reduction The discharge of ammonia (NH3) from sewage treatment facilities results in creating oxygen deficient conditions in the receiving water body with detrimental consequences for the receiving streams or lakes. The removal of each kilogram of ammonia requires 4.6 kilograms of oxygen for the nitrification process.

Nitrifying bacteria (which convert ammonia into nitrates) require aerobic conditions. BioGRO2® is the easiest and most efficient way to deliver high amounts of dissolved oxygen for the ammonia removal process. BioGRO2® transfers DO over 15 times more efficiently than conventional methods while utilizing 85% less energy.

BioGRO2® for Biosolids (Sludge) Filtrate Treatment In most conventional treatment plants the filtrate/supernatant from sludge handling facilities is returned to the front end of the plant. Depending on the processes and the sludge characteristics the filtrate/supernatant is usually has high BOD and ammonia levels. The BOD adds a significant load to the treatment facility and the ammonia often passes through the plant with minimal treatment making a major contribution to the overall ammonia levels in the plant effluent. Optimal efficiency will be achieved when BioGRO2® aerates the filtrate streams from the sludge handling process before returning to the plant.