In the dairy industry, high strength wastewater (HSW) has historically been hauled off site for land application or other treatment. However, treating the HSW onsite is becoming a practical solution to reduce cost and help achieve compliance.
Biological anaerobic treatment has proven to be more effective than traditional aerobic treatment of high strength waste. Anaerobic treatment allows for a higher loading capacity and potential for renewable energy.
Combining anaerobic with aerobic treatment allows the wastewater to be fully treated and discharged to a surface water outfall.
Separating your high strength wastewater
Recently developed instrumentation (including pH, ORP, conductivity, turbidity or UV sensors) has been applied in wastewater treatment processes. These sensors can automatically identify the wastewater depending on its characteristics and send it to the appropriate treatment system, depending on those characteristics. High strength waste is generally sent to the anaerobic system while normal strength waste is sent directly to the aerobic system.
This diversion technique allows the operator to balance the anaerobic and aerobic designed treatment capacity and ensure the optimal performance from the treatment plant. This has proven to be a very powerful design in wastewater treatment to effectively treat wastewater onsite; reducing cost, ensuring effluent water quality and providing the potential for energy generation.