Processing of Source Separated Organic Waste
Processing of Source Separated Organic Waste
Source separated organics (SSO) are biowaste materials collected separately from households. The Doppstadt screw press (DSP) is used to separate this waste into solid and liquid phases. The liquid phase, enriched with bioavailable components, is suitable for wet fermentation, while the solid phase, mainly packaging materials, undergoes composting or biological drying. The DSP ensures minimal contamination in the digestate, making it ready for fermentation without further treatment.
Process Overview
The process involves several stages: feeding, metal separation, manual sorting, and various shredding and separation techniques. The screw press plays a crucial role in separating the digestate into a liquid phase for biogas production and a solid phase for composting. The Doppstadt mixer enhances composting by mixing solid digestate with green waste.
Screening and Separation
Screening separates decomposed organic residues from non-biodegradable materials like plastics and metals. The process ensures that the compost is clean and ready for use, while oversized materials can be used as biomass fuel.
Company Overview
Doppstadt, headquartered in Velbert, Germany, is a leading provider of recycling and environmental technology solutions. Founded in 1965, the company offers innovative, efficient, and cost-effective solutions for waste management, serving customers in over 40 countries.
Key Equipment
The document details various machines used in the process, including the DSP for solid-liquid separation, mixers for homogenization, and screening machines for compost refinement. These machines are designed to optimize the recycling process, ensuring high-quality outputs.
Overview: The document outlines the processes and technologies used by Doppstadt Umwelttechnik GmbH for processing source-separated organics. It highlights the elimination of plastic contamination in biogas substrates, robust solid-liquid separation, and ideal composting conditions.
Main Processes:
- Shredding: Utilizes both high-speed and slow-speed shredders to reduce material size.
- Separation: Includes various separation techniques such as eddy current separation, near-infrared sorting, and manual sorting to segregate materials based on their properties.
- Rotting Process: Two stages of rotting processes are employed to decompose organic materials effectively.
- Solid-Liquid Separation: A robust process that tolerates impurities up to 80 mm in diameter, eliminating the need for subsequent digestate screening.
- Composting: Final composting is optimized by adjusting pH values and structure content to ensure ideal conditions.
Key Technologies:
- Near Infra-Red Sorting: Used for precise material separation based on infrared detection.
- Wind Sifting: Utilized to separate materials based on weight and aerodynamic properties.
- Screw Press: Employed for efficient dewatering and separation of solid and liquid components.
Benefits:
- Elimination of plastic contamination in biogas substrates.
- Robust separation processes that handle impurities effectively.
- Optimized composting conditions for high-quality output.
Contact Information: Doppstadt Umwelttechnik GmbH, Steinbrink 13, D-42555 Velbert, Germany. Phone: +49 2052 889-0, Email: [email protected], Website: doppstadt.com
Catalog excerpts
SOURCE SEPARATED ORGANIC WASTE Best Solution. Smart Recycling.
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SOURCE SEPARATED ORGANICS Solid-liquid separation of biowaste Process description for separating biowaste into solids and liquids The Doppstadt screw press can be SSO. Equipped with the feeding hop- sible from the feed material, but to used both as a pre-treatment step provide a liquid, as clean as possible Source separated organics (SSO) is se- dry matter prior to the fermenter. meability is ensured for a subsequent for SSO and food stuff prior to a wet opens up bags and containers prior with just one machine without pre-tre- parately collected biowaste from private The solid phase of the waste...
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FERMENTER INPUT ROTTING PROCESS OVERSIZE OUTPUT TROMMEL SCREEN FERMENTER INPUT SOURCE SEPARATED ORGANICS PROCESS OVERVIEW OUTPUT HIGH SPEED SHREDDER SPIRAL SHAFT SPLITTER SEPARATION SLOW SPEED SHREDDER EXAKTHACKER DRUMCHIPPER SCHREDDER SCHNELLLÄUFER PROCESS DIAGRAM TREATMENT MANUAL SORTING MANUAL SORTING SOURCE SEPARATED ORGANICS / WINDROW KITCHEN WASTE / OVERLAYED FOOD TURNER ROTTING PROCESS 1 SORTIERUNG SEPARATION SIFTING DUMP STAR SCREEN TROMMEL SCREEN LOREM IPSUM DOLOR SIT AMET SCREW PRESS BIOGAS BALASTIC SUBSTRATE SEPARATOR LIQUID MANUELLE METAL SORTIERUNG SEPARATION RESIDUES SOLID TROMMEL...
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ÜBERKORN MANUELLE METAL SORTIERUNG SEPARATION HIGH SPEED SHREDDER BALASTIC SEPARATOR EXAKTHACKER DRUMCHIPPER STAR SCREEN TROMMEL SCREEN OVERSIZE ZUFUHR OUTPUT EXAKTHACKER FERMENTER SCHREDDER INPUT LANGSAMLÄUFER SPIRAL SHAFT SPLITTER SEPARATION LOREM IPSUM DOLOR SIT AMET GENERAL VIEW OF MACHINES BALASTISCHER SEPARATOR SCHREDDER SCHNELLLÄUFER MIXERSLOW SPEED FEEDING SHREDDER SCREW PRESS WINDROW TURNER FLOAT-SINK SEPARATION SOLID-LIQUID SEPARATION SCHNECKENSTAR SCREEN SPIRAL SHAFT SPLITTER FLOAT-SINK PRESSE SEPARATION SEPARATION MANUELLE HIGH SPEED METAL WINDROW SHREDDER SORTIERUNG SEPARATION TURNER...
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Processing source separated organics with Doppstadt solutions • Elimination of plastic contamination already in the biogas substrate • Robust solid-liquid separation, tolerant to impurities up to 80 mm in diameter • No subsequent digestate screening required • Ideal final composting by adjusting the pH value and structure content Doppstadt Umwelttechnik GmbH Steinbrink 13, D-42555 Velbert Germany
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