Pet food


Dogs and cats love it: pet food. There are numerous process steps involved in the production of pet food, including extrusion, drying, cooling, machine extraction or the cooking process for wet food. When processing wet and dry food, dust and odours are released into exhaust air, and can severely impact the environment. These odour emissions are subject to strict limit values per BImSchG, specified in TA Luft. Riedel Filtertechnik offers a broad product portfolio with individual solutions for pet food production. From dust extraction and dedusting of conveyor systems, extruders and dryers to the reduction of odour emissions, all bases are covered. Through the precise design of our systems, we provide optimum and energy efficient solutions for the production of pet food. We handled volume flows of much more than 50,000 m³/h, either individually or combined depending on requirements. Structural explosion protection ensures safe production in line with ATEX guidelines. The protective housing on our COPLAS clean system to reduce odour emissions, we ensure occupational safety during operation.


Your requirements

  • Optimized system design
  • Simple maintenance and operation
  • Maximum system availability
  • High operational reliability and low operating costs
  • Compliance with European laws, official and technical guidelines, stipulations and norms
  • High dust and odour reduction of more than 95% through innovative and sustainable solutions
  • Improved energy efficiency
  • Occupational safety
  • Takes up little space

Our services

  • Consultation and assessments
  • Exhaust air cleaning and automation
  • Standardized and individual filter systems
    Bag filters, hose filters, cartridge filters, Venturi and absorption scrubbers, twist separators und cyclones
  • Dedusting of conveying systems, dryers, production and packing machines
  • Certified solutions in line with ATEX and pressure equipment guidelines
  • Process engineering components to increase system reliability
  • Turnkey system installation
  • On-site Customizing with our mobile COPLAS clean unit – for customer-specific system design for optimal odour reduction
  • On-site pilot tests as part of the creation of BImSchG applications
  • Assistance with official control measurements



Pet food // Austria

Odour reduction of extruder, cooler and dryer exhaust air in the pet food industry by injection of plasma-enriched air by COPLAS clean technology - to counteract complaints from nearby neighbors and to comply with regulatory limits.

Three COPLAS clean systems to treat the exhaust air of several production lines with an odour concentration of 5,000 GE/m³ each

  • Total air volume: 48,000 m³/h
  • Injection fans for fresh air supply: up to 3,300 m³/h
  • Bag filter as pre-filter for extraction of the smallest particles of fresh air
  • HMI for user-friendly operation
  • Possibility of remote maintenance via LTE
  • Prevention of backflow of exhaust air into our system
  • Special design and separate installation of several systems in historically grown production environment


  • Adjustment of plasma power for different recipes
  • Prepared for future upgrades
  • Odour reduction: < 500 GE/m³ measured according to DIN EN 13725

Pet food // Austria

Dedusting of an extruder in an animal feed production plant

Fabric filter JMT bag filter

  • Filter type: JMT bag filter
  • Volume flow: 28,000 m³/h
  • Filter area: 238 m²
  • Dust discharge: screw in filter hopper and rotary valve
  • Radial fan 22 kW
  • Frequency converter 22 kW


  • Residual dust content < 5 mg/m³
  • Filter design according to ATEX directive
  • Differential pressure controlled filter cleaning

We ask for your agreement