Press Technology & Mfg Inc Usa

AGRI-CLEAN

The purpose of the Agri-Clean™ System is to remove solids and nutrients from animal manure wastewater. The system consists of an Internal Drum Thickener (IDT), an Agri-Press® Screw Press, a Dissolved Air Floatation (DAF) Clarifier, a twin polymer make-down system, a chemical feed system, a PLC control, a data collection system and a telephone modem.

The IDT prethickens the low consistency raw manure slurry to 10-12% solids. The thickened slurry flows into the Agri-Press® and is dewatered to 35-40% solids. The liquid filtrate from the IDT and Agri-Press® is pumped to a DAF clarifier. Chemistry is added to the liquid filtrate before being injected into the DAF. The chemicals are a coagulant and a flocculent. The coagulant is used to remove soluble phosphorus and ammonia while reducing the pH and neutralizing the negatively charged suspended solids. Solids from the DAF are returned to the IDT and Agri-Press®.