Green Energy

North Hykeham Landfill Site

IBA Recycling Facility

FCC Environment is proposing to build an IBA (Incinerator Bottom Ash) recycling facility on land immediately to the south of the Lincolnshire EfW at FCC Environment's North Hykeham landfill site. The proposed development would have a capacity sufficient to manage all of the IBA generated by the EfW and a small amount by other facilities. IBA can be turned into a useful new aggregate product that can be used in the construction industry, ultimately preventing more waste going to landfill.


What is IBA?

Ash generated from the combustion of residual municipal waste known as IBA (Incinerator Bottom Ash). This is a by-product of the incineration process and is classified as non-hazardous waste. IBA is the fraction of waste treated by the EfW which is non-combustible and typically contains a variety of materials including glass, brick, rubble, ceramics and metals.

Why is an IBA Recycling Facility needed?

IBA is increasingly being recognised as a resource which can be recycled into safe and useable aggregate products. Facilities like the site proposed at North Hykeham, ensure that more waste is recycled and diverted from landfill. Therefore the development would provide considerable environmental, sustainability and financial benefits.

How much IBA will be treated?

The IBA recycling facility will be able to receive and process a maximum up to 50,000 tonnes per annum (tpa) of material from the neighbouring EfW facility and other facilities.Site infrastructure including vehicular access, will be shared between the existing landfill and the IBA recycling facility. All of the IBA generated by the neighbouring EfW facility would be transferred directly to the IBA recycling facility by a conveyor belt thereby avoiding unnecessary vehicle movements on the public highway.

How does it work?

The IBA is treated through a process known as ‘maturation’ which involves storing the raw IBA on impermeable external areas so that it is exposed to air and water. As a result of this exposure, carbonation reactions occur which reduces its pH and removes soluble salts.

When matured, the IBA is fed into the enclosed recycling facility building by mobile plant where it would be processed by a series of screens and conveyors to recover metals for recycling and grade the aggregate material according to particle size. This process will also generate a small amount of reject material which will be disposed of to a non-hazardous landfill. The separated grades of aggregate are transferred to external stockpile areas ready for collection and use in construction projects.

Would there be any environmental or amenity impacts?

The planning application for the IBA recycling facility at North Hykeham includes a supporting statement assessing the potential environmental effects of the development. The scope of the statement has been discussed and agreed with Planning Officers at Lincolnshire County Council and considers the effects of the development in terms of:

  • Air Quality (including Dust and Odour)
  • Flood Risk
  • Ecology and Nature Conservation
  • Noise
  • Landscape and Visual
  • Traffic and Transportation

In addition to the assessment of potential impacts through the planning process, it must also be noted that if the IBA recycling facility is constructed and operational, it will be regulated by the Environment Agency (EA) under an Environmental Permit, through which the EA will ensure that potential environmental impacts are avoided.

Why is there a proposed IBA facility at North Hykeham?

The Lincolnshire EfW facility was granted planning permission in July 2009. Following this the Council and WRG have worked to commence construction in April 2011. To support the EfW and provide a number of sustainable benefits (i.e. limiting the number of vehicle movements), it is proposed to construct the facility on land immediately next to the EfW facility.

How will the odour be controlled?

The potential for odour is extremely low. Due to the nature of the IBA, which is a combustion residue, it typically contains a variety of materials including glass, brick, rubble, ceramics and metals.   Amenity issues are considered further in the planning and environmental permit applications for the proposed facility. Once operational, amenity issues would be controlled through the site's Environmental Permit which will be regulated by the Environment Agency.


How will the dust be controlled?

Dust is controlled through the maturation process. This is because the raw IBA has a high water content (arising from the water quench when cooled), and the stockpiles of IBA are wetted during the process. In addition, during any dry conditions, water would also be sprayed onto hard surfaces to reduce the potential for dust arising. Processing equipment is also contained within an enclosed building which will limit potential dust arising.   Amenity issues are considered further in the planning and environmental permit applications for the proposed facility. Once operational, amenity issues would be controlled through the site's Environmental Permit which will be regulated by the Environment Agency.

How is surface water from the process managed?

Surface water run off from the process is collected within the site's sealed drainage system which drains to a sealed settlement lagoon. Collected water is reused into the process to aid maturation and dampen down stockpiles and surfaces to control dust. Any excess waste water from the process will be sent to an appropriately licensed waste water treatment plant or will be used in the EfW to quench the ash when it falls out of the grate, thereby reducing the demand on clean mains water supplies.

What will the visual impact be?

The facility would have a very limited visual influence on the surrounding environment due to the limited extent of the proposed development. The proposed facility is located between the Lincolnshire EfW facility and North Hykeham Landifll. Both the domed landform of the landfill site and the presence of the main building of the Lincolnshire EfW will provide significant screening of the proposed facility from most view points.

What will the traffic impact be?

Vehicle movements associated with the transportation of IBA from the Lincolnshire EfW have already been considered as part of the determination of the Lincolnshire EfW. The proposed development of the IBA facility on land adjoining the EfW enables the IBA to be delivered to the facility via a conveyor thereby removing the need for vehicles to transport the IBA by road. Material exported from the site would be transported in bulk, thereby reducing the overall vehicle numbers associated with the operation of the facility.
The proposals have been the subject of a detailed transportation assessment which has confirmed that the impact upon the local highway network for the operation of the IBA facility would not be significant

There will be some vehicle movements associated with the facility in the form of vehicles accessing the site to collect the processed IBA aggregates and some additional deliveries of IBA from other facilities to take the plant up to its maximum operating capacity. This additional top up capacity represents about 20% of the plant’s overall capacity.

A traffic assessment has been carried out as part of the planning application and considers, in detail, potential traffic impacts.

As part of the EfW planning permission agreement, Lincolnshire County Council have committed to contributing £800,000 towards sustainable transport improvements to Whisby Road. This is in addition to the highway improvements planned as part of the Teal Park scheme.

Will it be noisy?

The facility is proposed to be located away from nearby properties between the Lincolnshire EfW and North Hykeham landfill, both of which will provide a significant barrier to any potential noise emissions from the plant. The main plant processing equipment, which has the greatest potential for noise generation, will be housed within a building which will significantly reduce potential noise emissions. A noise assessment is included within the submitted planning application and considers, in detail, potential noise impacts and any necessary mitigation measures.

What are the benefits of an IBA facility?

IBA possesses similar properties to natural aggregates, and offers significant environmental and social benefits.

  • IBA can be used as a secondary aggregate for roadbase material, asphalt and other construction applications
  • Reduced quarrying of primary aggregates resulting in an overall reduction in energy consumption when extracting, processing and transporting aggregate
  • Additional tonnages of both ferrous and non-ferrous metals recovered for recycling
  • Avoids landfilling of IBA, meaning only a very small percentage of the residual waste is not put to beneficial use.

What happens next?

The pre application public consultation period has now concluded and the application was submitted in October 2011. Planning Officers at Lincolnshire County Council will review the application and all the feedback from the public and statutory stakeholders (such as the Environment Agency and Health Protection Agency). Following this review a report will be prepared and presented to members of the Planning Committee at Lincolnshire County Council who will make a formal decision as to whether to approve or reject the application.

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