Southwest Environmental Limited

Using a Star Screener

PAS 100 compost has to meet certain quality criteria. When sent for analysis PAS 100 Compost can only have certain percentages of plastics in it. Use of a trommel screener can leave large volumes of oversize "tangled" with plastics. Use of a star Screener can help separate out this oversize from the plastic. Pictures of a star screener below.

Pictures of a Star Screener

SWEL do not hire out star screeners, this page is for informational purpose's only. The above star screener was fitted with a wind separator for plastics.

The below section was written by a machine.

Technical Resource: Star Screener Operations and Oversize Management

Star screeners are specialized mechanical separators used extensively in waste recovery and composting to remove "oversize" materials from the primary product stream. Effective screening is a prerequisite for ensuring that high-quality outputs, such as those meeting PAS 100 standards, are free from physical contaminants. This information resource outlines the technical and regulatory considerations for operating such machinery within a regulated environment.

Operational Dynamics and Regulatory Context

The use of star screeners, whether as mobile units or fixed plant, must align with the conditions of an environmental permit. These requirements are designed to protect local air quality and prevent nuisance to neighboring receptors. Understanding the technical requirements of your Environmental Permit is essential for maintaining operational compliance.

• Dust Suppression: The high-speed mechanical action of screening can generate airborne particulates, often requiring a formal Dust Management Plan to satisfy Environment Agency monitoring requirements.
• Noise Mitigation: Mechanical vibration and engine noise must be managed, particularly for sites located near sensitive residential areas, often necessitating a review of Noise Management procedures.
• PAS 100 Compliance: For organic waste processors, the efficiency of the star screener directly impacts the ability to achieve PAS 100 certification by strictly controlling the fraction of oversize material in the final compost.

Integration with Management Systems

Technical equipment like star screeners should be managed under a comprehensive Environmental Management System (EMS). This ensures that maintenance schedules and throughput data are correctly recorded, supporting the site’s overall environmental compliance profile. For facilities undergoing an Environmental Impact Assessment (EIA), the inclusion of modern screening plant is often cited as a measure to improve waste recovery rates and support the circular economy.

Professional Oversight and Data Accuracy

While this resource provides technical background, the implementation of screening strategies requires site-specific expertise. Accurate reporting of waste recovery volumes and emissions data is vital for satisfying regulatory bodies. At SWEL, we utilize over 15 years of industry experience to help bridge the gap between technical data and regulatory compliance across the UK. With over 900 projects delivered, our team provides the technical authority and professional accreditation (IES/FGS) needed to ensure your operational documentation is robust and audit-ready.

For further technical reading on waste recovery methodologies, please visit our environmental consultants resource directory.