Air pollution control

Around the world companies are facing steadily increasing demands to limit hazardous or odourous emissions from their production facilities. The institutions of the EPA in the United States and the IPPC in Europe are evidence of a new political climate. Regulations for permitting production now normally require assessors to consider potential odour and pollution impacts when reviewing applications.

As a result of urban sprawl, many production plants, originally sited at a distance from the population, now find themselves surrounded by housing. Local communities have also become more willing to use the available laws of nuisance in taking legal action against owners and operators of odour and pollution sources. Specific limits for concentrations of particulate matter and in many areas for odour have also made this type of action more likely to succeed.

All indications are that these trends are likely to continue into the future.

At APP, we don't only provide drastic removal of odour and dust, we also put our science and energy to do so in the most environment friendly way.

State of the art odour and particle abatement technology for the food & feed and tobacco industries
The APP Odour and Dust Abatement System is recognized as Best Available Technique (BAT) in IPPC for Odour Abatement. The system efficiencies has been demonstrated globally in a wide variety of industrial applications. It offers a low investment cost and very low operation and maintenance cost, together with verifiable odour removal efficiencies.

Increasingly, food & feed manufacturers are being required to address the issue of release of odour and harmful contaminants into the surrounding community. Local communities, special interest groups and government legislation all bring pressure to factories to minimize real or perceived risks of contamination. There are no universally applied standards for odour or Volatile Organic Compounds (VOC) emissions, and to provide solutions that fit specific factory needs can be challenging. There is no single solution but understanding the food manufacturers problems certainly helps a great deal.
In recent years, there have been numerous changes regarding where production facilities are situated. Factory closures and relocation of manufacturing units has become commonplace. At the same time urban sprawl has resulted in residential areas being built closer to previously remote industrial areas. Another pressure companies face is meeting local environmental needs. So what does the industry need from its odour abatement equipment? This is a complex question and the answer needs to include:

  • A compact design minimizing space requirements

  • End of pipe solution

  • Low running cost

  • Minimal maintenance

  • Ability to operate at normal food manufacturing temperatures, to avoid cooling costs

  • High odour removal efficiency

  • No chemical additions and need to maintain chemistry

  • No liquid effluent waste

  • Instant on/off – no warm up time

  • Modular construction, ease of relocation if change of production location and ease the ability to add on modules according to required capacity

  • Competitive capital cost

Odour Abatement – A friendly neighbourhood
APP provides cutting edge solutions that can clean odours and particulate emissions; minimizing attention from neighbours and ensuring compliance with local ordinances. By installing APP solution at an early stage, companies can avoid costly and damaging high profile conflicts. Managers and personnel can then focus their attention on efficient production and the need for potentially much higher investments at a later stage can often be avoided.

Low Operating Cost
10-year Life Cycle Cost: Basically, the operating cost of this application is close to 1 Euro per hour. For one system with a capacity of 20.000 m³/h and cost of electricity being € 0,05 per kW, the operating cost would be:

Emission volume: 20.000 Am3/h
Cost of electricity: 0,05 EUR per kWh

Operating cost (example):
15 kW x 12 h x 320 days/year x 10 years x EUR 0,05 = EUR 28.800

Maintenance cost:
1 hour x 12 months x 10 years x EUR25 = EUR 3.000

Spare parts:
Calculated to be 0,5 % of investment cost x 10 years = EUR 6.000
Total Life Cycle Cost, 10 years operation = EUR 37.800 + Investment

The Odour Abatement System
Odour and Particulate Abatement System (OAS 50-600) is based on the use of non-thermal plasma technology treating the entire emission in an intensive plasma field abating odours of industrial emissions efficiently. The system has the following main properties:

Removes odour and particulates from emissions

  • Cleaning efficiency: 75-95%

  • Modular Capacity: 20 000 m³/h

  • Power Consumption: 10 - 20 kW pr. module – maximum 30 kW

  • Small equipment "footprint" and low weight

  • Low pressure-drop (approx. 40 – 180 pa)

  • Can be installed on both suction side and pressure side

  • No consumables in operation

  • No effluent release

  • Simple on/off operation

  • Very low maintenance and operation cost

  • Remote control and monitoring via modem/Internet

The APP Odour and Particulate Abatement system has been installed on emission volumes ranging from 10 000 m³/h up to 2.000.000 m³/h, but the modular concept will of course allow for even larger volumes if required. APP also provides daily / weekly remote monitoring of the system performance if that is required by our customers.

Cleansing principles and emissions to the atmosphere:
The general cleansing principles used in the APP non-thermal plasma technology, are to accelerate the natural destruction of the chemical composition in the process emission. Hence, there are no by-products created from the cold plasma process. The reaction chambers also function as compact electrostatic precipitators, removing dust and particulates. Due to the low energy level in the reaction zone, the APP system is not able to "produce" any harmful by-products.

An oxidation process takes place in the plasma reactor, and causes the odour reduction to happen. Radicals generated inside the reactor initiate this process. Most of these radicals are all short lived and will be consumed before emitted out of the unit. Some O³-radicals (ozone) may however be emitted out of the unit and will contribute to a post-reaction in the ducting leading the emission to the exit point. During commissioning, O³ emission will be verified to be well below existing standards.

Dust Abatement: Highly effective Dust filters
PIC00038The APP reaction chamber not only create a plasma zone, they also possess a very high electrical field strength and thereby act as a very efficient compact electrostatic precipitator (ESP). This means that any particulate matter and dust passing through the chambers will be strongly attracted to the sides and be removed from the gas flow. Measurements have shown that the system is very effective in removing fine dust and submicron particles of 2,5 micron (PM2,5) and below.