2026/07/07
The entire roller press granulator production line features end-to-end management—covering raw material pretreatment, granulation, screening, dust removal, and the handling of exhaust gas and waste residues—to significantly mitigate three major environmental pain points: dust, odors, and solid waste. The system offers low overall control costs and is easy to implement.
Regarding raw materials, the process prioritizes fully decomposed organic fertilizer inputs, minimizing the intake of unfermented livestock manure to reduce odor generation at the source. Raw material crushing and feeding stations are equipped with enclosed negative-pressure dust hoods and pulse-jet bag filters; all dust-generating points are fully sealed to prevent fugitive dust emissions. High-moisture materials undergo pre-processing to adjust moisture content to 12%–18%, reducing dust generation during crushing and preventing roller adhesion—which causes fine powder re-suspension—during the double roller press granualtor process.
The main extrusion unit undergoes full sealing modifications; soft sealing curtains are installed at the roller press and discharge outlets, and a collection hopper is placed at the base to automatically recycle spilled powder, eliminating solid waste accumulation on the factory floor. A double-deck vibrating screen is utilized, with fine powder and broken granules returned directly to the main unit for re-granulation via screw conveyors; this achieves zero discharge of powder materials, drastically reducing the burden of solid waste removal and preventing odor accumulation on-site.
Factory flooring is hardened and made impermeable, with drainage channels installed beneath the equipment. Cleaning wastewater is collected in a sedimentation tank and—following sedimentation and basic biochemical treatment—recycled for raw material moisture adjustment, ensuring zero wastewater discharge. Negative-pressure deodorization ducts are installed in the workshop to capture odors volatilizing from crushing stations and storage hoppers; these are treated in a spray deodorization tower and discharged at height in compliance with standards, eliminating odor-related nuisance issues.
Daily operations include scheduled cleaning of dust collector accumulations and regular maintenance of seals to prevent air or dust leakage; production utilizes enclosed, continuous processes, minimizing manual open-air material handling. The entire upgrade requires no major modifications to the main unit; through four key measures—dust recovery, powder recycling, wastewater recycling, and odor collection—emissions of solid waste, dust, and odors are significantly reduced, ensuring consistent compliance with environmental inspection standards.
