A Midwest manufacturer of automotive parts was experiencing elevated levels of zinc in the effluent from their existing conventional wastewater treatment system. This wastewater was generated through a multi-stage cleaning and zinc phosphate process which produced elevated levels of both particulate and dissolved zinc in the wastewaters.

Lone Star Dairy is a leading producer of value-added dairy ingredients derived from locally-sourced milk. While Lone Star Dairy was already enjoying the benefits of low-rate anaerobic digestion, production capacity was driving flows and loads beyond the capacity of their existing system. Upgrades were needed to remain compliant to protect the downstream publicly owned treatment works (POTW).