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Comment Water Treatment

Wastewater concentrator uses waste heat to lower treatment costs

By Scott Jenkins |

Landfill leachate and other challenging wastewaters incur rising treatment and disposal costs. Technology developed by Heartland Water Technology, Inc. (Hudson, Mass.; www.heartlandtech.com) can lower costs for treating wastewater by slashing wastewater volumes by 95% or more, using waste heat as an energy source, and reducing maintenance costs and downtime associated with more traditional evaporation technologies. The Heartland Concentrator works as a direct-contact evaporator where hot air is mixed vigorously with wastewater in Heartland’s proprietary Low Momentum-High Turbulence (LM-HT) process. The LM-HT process routes air through a liquid-gas-phase mixing process, creating enormous surface area for heat transfer. By using hot air directly, the Heartland Concentrator eliminates the need for heat exchangers to transfer energy into wastewater, thereby eliminating the largest cost and the biggest maintenance and reliability headache in traditional brine concentrators. The Heartland Concentrator also features Flex-Heat capability, which allows the unit to be powered by waste heat from a number of sources, including biogas flares and exhaust from gas turbines or reciprocating engines. It can also be configured to use multiple waste…
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