Why the Drycake Twister Separator and Seditank Combination Provides the Perfect Pretreatment for Kerbside SSO

England’s Simpler Recycling initiative mandates separate food waste streams for businesses now—and households starting April 2026. This will further boost volumes of kerbside-collected household and commercial SSO, challenging waste processors to adopt robust, efficient pre-treatment technologies to prevent plastics and inert materials degrading biogas plant digester performance.

1. Advanced Cyclonic Depackaging: The Twister Separator

The Twister is a 3rd-generation, stainless-steel, vertical cyclonic separator engineered to separate packaging from organic waste at high throughput with minimal wear and no grinding.

• Cyclonic vortex: lifts lighter packaging into a tangential discharge, while denser organics pass through micro‑perforated screens.
• No shredding required: packaging (bags, cartons, bottles) remains largely intact—ideal for recycling; avoids microplastic generation. Avoids soils contaminant build-up from digestate fertiliser use.
• High capacity & flexibility: models from 1 t/day to 12 t/h, customizable hopper volumes, OFMSW (80mm Fraction) wet or dry discharge mode per digestion system needs.
• Low operating cost: power consumption ~3–5 kWh/tonne, with VFD motors on rotor, feeding screw, and bridge‑breaker screw.
• Ease of use & sanitation: fully stainless design, IP68-rated motors, pressure-washable, minimal maintenance.

Key Technical Benefits:

2. Grit & Plastic Polishing: Seditank Food

Following depackaging, the Seditank Food polishes the organic fraction further:

• Sedimentation removes grit (sand, glass) that damages digesters, pumps, and heat exchangers.
• Plastifloat flotation system skims off plastic pour-ups, including microplastics, before AD.
• Air‑flotation and paddle skimming efficiently separate floatation from sediment, yielding cleaner organics.
• Model range: AD-15 to AD-150 (15–150 m³/h) accommodating small to large-scale facilities.

Output Quality

• High-purity organics: ready for PAS110 compliant AD feed or composting.
• Clean rejects stream: ideal for energy recovery (SRF with ~30 MJ/kg; <4% ash), per lab data.

3. Why This Duo Is Ideal for England’s Kerbside SSO Surge

• Full automation: minimal manual sorting, high uptime, easy integration with trucks and digester feed lines.
• Regulatory readiness: separation tech aligns with UK’s PAS110 compost/ quality and plastic recycling rules.
• Scalability: modular Twister models and Seditank capacities to match rising SSO volumes.
• Resource recovery: packaging output is monetizable, organics reach AD/composting standards, grit is removed.
• Sustainability credentials: low energy/water usage, stainless steel durability, reduces microplastics—enhancing circularity.

4. Implementation Overview

• SSO Collection: easy tipping into intake hopper
• Twister Depackaging: cyclone/rotor separates packaging from liquids & organics
• Packaging Output: clean, intact film/cartons for recycling or SRF
• Organics Stream: auger, pumped or gravity-fed to Seditank Food
• Seditank Treatment: grit settles; plastic floats and is skimmed off
• Final Organics: clean, ready for batch/continuous AD or composting.

This dual-stage system ensures maximum resource capture and compliance with evolving England food-waste policy.

The combination of Drycake’s Twister Separator and Seditank Food creates a robust, efficient, and future-proof pretreatment solution for emerging kerbside SSO streams in England. It delivers high-quality organics for anaerobic digestion, recyclable packaging output, and protects downstream infrastructure.

Interested in upgrading your SSO processing? Visit the official Drycake Twister website for full technical specs, case studies, and contact info: twisterseparator.com