Seditank Eliminates Grit and Plastics from Food Waste Pulp

The Drycak™ Seditank™ eliminates grit and plastics from food waste pulp which may not at first sound very beneficial. Read on to find out just how sustainably beneficial this equipment can be.

This article is about sustainable food waste recycling solutions that may be achieved by removing grit and plastics from the organic soup output of the Drycake™ company’s “Twister” depackager and separator.

Twister plus the Seditank depackaging technology.

The following are the sustainable solutions that recycling/waste processing facility owners believe to be their goal:

• diversion of organic waste from landfills
• efficient organic pulp manufacturing for high biogas output in AD plants, from food and similar organic waste streams -use of digestate as a useful nutrient in items for sale.

These sustainable practices are critical in the field of food waste recycling for minimising environmental impact and maximising resource efficiency.

Removing grit and plastics in the organic waste stream

The presence of grit and plastics in the organic waste stream, which can cause maintenance issues and damage the quality of the final digestate, is one of the significant concerns in this industry.

Such concerns, however, can now be efficiently handled with the introduction of the Drycake Seditank system in conjunction with their Plastifloat plastics removal technology.

An Opportunity for Profit

Furthermore, a genuine prospect for money generation occurs from:

-the value contributed by a biogas plant feed (pulp) that is free of plastic and grit and delivered to the digester at an optimal water content
-the possibility for selling of plastic bottles and other high-value recyclable plastic waste streams for the manufacturing of recycled resin.

In this article, we will look at the Seditank’s role in removing grit and plastics from the organic soup output of the Twister or any other depackaging machine, as well as how it helps to long-term food waste recycling solutions.

Sustainable Food Waste Recycling Solutions: The Seditank/Plastifloat technology removes floating plastics.

The Grit and Plastics Problem in Organic Waste

The inclusion of grit and plastics in food waste recycling is a concern.

Grit, which consists of sand, soil, and other heavy inert materials, can induce abrasion and wear in biogas reactors, resulting in higher maintenance expenses. Furthermore, the presence of plastics, including microplastics, not only impairs digestion efficiency but also raises concerns about:

• increased viscosity in the biogas reactor; and
• contamination of the final digestate.

Metal contamination may be a problem for fertiliser manufacturing if the depackaging/separation mechanism grinds up metals into tiny particles.

Food waste depackaging plastics separator Drycake Twister has addressed these concerns that are critical for attaining long-term and effective food waste recycling.

To offer a complete organic waste separation system, the Drycake Twister Unit (left) and Seditank/ Plastifloat Unit (right) are utilised in sequence.

DrycakeTM created the Seditank as a unique solution to the problem of grit and plastics in the organic waste stream. It’s a piped-in and weir-out/auger-conveyed grit removal system that works well with the Twister or any other depackaging machine. Its purpose is to remove dirt and plastics before they enter the biogas reactor.

This novel technology eliminates the requirement for high-wear-resistance grit pumps while also allowing for the efficient separation of organic material from undesired impurities.

Seditank Improves Biogas Yield/Efficiency

The combination of the Seditank with the Twister provides various advantages to food processing experts who recycle.

To begin with, eliminating grit and plastics contributes to the longevity and performance of biogas reactors, lowering maintenance expenses associated with abrasion and wear.

Second, the almost complete removal of plastics from the organic soup output results in a cleaner and higher-quality digestate that can be used as a valuable resource in a variety of applications.

Furthermore, by preventing plastics from entering the anaerobic digester, the Seditank contributes significantly to resolving the growing concern about visible plastics in solids or liquids used in crop and horticultural/garden applications.

Grit and Plastic Removal Procedure

To efficiently remove sand and plastics from organic soup output, the Seditank-Plastifloat system works in conjunction with the Twister or any other depackaging equipment.

The novel auto-opening weir outlet, in conjunction with a submerged exit for clean pulp and a separate low-level grit/sand/silt outlet, enables the 3-way separation of light/floating plastics from heavy/inert fractions, including grit, from organics. Only clean organics are subsequently sent to the biogas reactor.

The Plastifloat component, on the other hand, successfully eliminates all sorts of plastics, including microplastics, via a specialised separating process. This ensures that the organic waste stream entering the biogas reactor is free of pollutants, resulting in increased system efficiency and greater digestate quality.

According to local requirements, the digestate should be low in metal contamination and low in microplastic, making it suitable for land spreading and usage in fertiliser products.

Twister Depackager Unit Working Diagram Promoting Sustainable Food Waste Recycling

Recycling and food processing specialists can greatly contribute to sustainable practises by introducing the Seditank system into food waste recycling processes.

The efficient removal of grit and plastics not only lowers maintenance costs but also protects the environment by reducing microplastic release and ensuring cleaner digestate. Furthermore, the segregated plastics can be reused, enabling a circular economy approach and lowering total environmental impact.

A Summary of the Seditank System

The Seditank system provides a sustainable and effective solution to the grit and plastics difficulties in organic waste recycling.

It eliminates these impurities from the organic soup output by smoothly integrating with the Twister or any other depackaging equipment, assuring the longevity and performance of biogas reactors while providing a higher-quality digestate. The Seditank can help recycling and food processing professionals promote sustainable practices, minimise maintenance costs, and contribute to a cleaner environment.

The Seditank, with its capacity to successfully remove grit and plastics, lays the way for a more efficient and environmentally responsible food waste recycling process.

Overall, the Seditank method has a greater impact than simply removing sand and plastics. It is critical to the advancement of the ideas of circular economy and resource efficiency.

The technology encourages a closed-loop approach by recycling the separated plastics, lowering the requirement for virgin materials and minimising trash formation.

Recycling and food processing specialists may lead the way in sustainable food waste recycling by implementing the Seditank system, benefiting both their operations and the environment.

Food waste depackaging plastics separator Drycake Twister
Investing in long-term solutions like the Seditank shows a dedication to appropriate waste management and environmental responsibility.

As the demand for effective food waste recycling develops, the Seditank stands out as a dependable and innovative instrument, enabling industry professionals to overcome the obstacles of grit and plastics while also contributing to a greener, more sustainable future.