Biowaste Product News

The slow speed Raptor XL shredder and the disc-screen “4in4 Screen” are the new cost effective duo for the processing of biomass from ARJES.

Biomass duo from ARJES

The slow speed Raptor XL shredder and the disc-screen “4in4 Screen” are the new cost effective duo for the processing of biomass from ARJES.

Screen discs can be changed by the operator

The material is placed into the slow running shafts of the ARJES Raptor XL and is pre-shredded into a lumpy and rich textured end size product, with a high throughput rate and low energy costs.

The throughput rate is between 150m³ and 250m³ per hour, according to the chosen end size of 150mm to 400mm. Over the long conveyor belt of the ARJES Raptor XL the material is placed directly on the ARJES 4in4 Screen, which is powered by the hydraulic system of the shredder in order to save investment costs.

Exact screening is enabled through a special screen-geometry with 4-point axles and 4-point discs, working at 90° to each other. Due to the special 4-point discs the material is aerated again.

The first screen deck separates the fine material for composting with a mesh fraction of around 20mm. The second screen deck separates the classic fuel with a mesh fraction between 100mm and 150mm. At the end of the screen only 8% to 10% oversize remains.

The screen is constructed for a ground clearance of 3.5m under both screen decks, guaranteeing high storage capacity and easy material removal through a wheel loader. The ARJES 4in4 Screen is specially built for easy maintenance. The combination of the Raptor XL shredder and the ARJES Screen enables biomass processing in mobile and stationary use.

Anniversary Milestone reached in Biowaste Processing

Separate collection and composting of organic waste from households in Germany began in 1983 with a trial in the town of Witzenhausen.

In 2010, more than five million tons of quality compost was delivered to the German agricultural, gardening and landscaping industry

At the same time, in a small village in the north of Germany, Friedrich BACKHUS was producing organic fertilizer from separated cow manure. The product was sold at a high price, but the composting process was done manually by a man with a shovel. This led to the development of the BACKHUS windrow turner.

Today in that small village, the BACKHUS EcoEngineers are busy developing the next generation of BACKHUS windrow turners. The BACKHUS 21 series is planned to launch in the early summer of 2011. The development of the new generation of BACKHUS windrow turners is driven by the needs of the compost market. BACKHUS EcoEngineers will supply the right windrow turner for the 21st century: a flexible machine that meets all local needs at a reasonable price and with very low operating costs per cubic meter compost. The BACKHUS 21 series – made for biowaste composting.

Biobag: Reducing the Cost of Food Waste Collections

BioBag International introduced the ventilated system in the mid 90s that can now be found in approximately three million households across Australia, Asia, Europe and North America.

The weight reduction leads to cost savings for local authorities who often pay gate fees per tonne

It can be very challenging for local authorities to introduce a food waste collection programme from private households. People’s perceptions are often that collection of food waste is dirty, smelly, and messy. Therefore it is very important to provide the households with a “ready to use” system that is proven to work.

The key to success for the ventilated system is its highly breathable and fully compostable BioBag, used in combination with the ventilated MaxAir kitchen caddy. Together they form the ventilated system and are proven to be the world’s most cost effective and satisfactory food waste collection system for private households. The breathability of the system prevents bad smells, even if the food scraps smell when put it in the caddy.

The ventilated MaxAir caddy design allows moisture from food waste to evaporate leading to weight reduction. Tests have shown that a weight reduction of 13 – 15% of the food waste over a period of three to four days is typical.
Tel: 0047 69 88 85 90

Waste wood recycling into energy branches out across Switzerland

Surprisingly to most people, using waste wood to fire a power station is environment-friendly.

For safety reasons, Tegra developed a camera-system for the 966H wheel loader

Tegra, a Swiss energy company uses it to produce 350,000 MWh of energy annually. For its ground-breaking initiative, the company won Switzerland’s prestigious Watt d’Or award. Cat® machines are part of the success-story.

On average, the three boilers generate 128,000 MWh of electricity per year, corresponding to the annual consumption of 27,200 houses, and 220,000 MWh of heating energy, corresponding to the annual consumption of 23,000 houses.

Cat wheel loader fuels boiler

The whole plant burns about 260,000 tonnes of waste wood annually. Tegra runs a fleet of trucks and trailers to transport wood-chips, bark and sawdust from different locations to the plant. In total, around 800 tonnes are processed every day.To fuel their first boiler Tegra bought a Cat 962H wheel loader. “Service and customer-support by the local Cat dealer Avesco is great”, said Klaus Aulbach, logistic coordinator for Tegra.

Recently the firm bought a Cat M322D MH material handler and a waste wood grinder for processing low quality logs, pallets and unpainted construction timber.

With all three boilers being online and 2100 cubic metres of fuel being processed every day, it was soon time to get a second wheel loader. “Never change a winning team”, commented Aulbach’s on the acquisition of a Caterpillar 966H.

The main purpose of the wheel loaders is to blend and stockpile wood-chips, bark and sawdust. But they are also used for fuelling the boilers by dumping blended material onto the feeder hoppers.

The satisfying fuel consumption and the first class support by Avesco are some of the reasons why Tegra will stick to Cat machinery for future thermal power station projects in Switzerland.

Ecostar Disc Screen Recycling Technology Continues to Help Boost Waste Markets

The Cappozzo family of Sandrigo, Italy, directed by Domenico and his sons has applied its research and experience with agricultural machinery to new environmental technologies and founded Ecostar Recycling Technologies in 1997. A young team of worthy collaborators has worked passionately and methodically to bring quality growth to Ecostar S.r.l., whose innovative solutions have been appreciated on both national and international markets with increasing success.

Mechanical separation of waste materials is becoming more important

Mechanical separation of waste materials by means of screening is becoming more and more important, both in terms of the environment and the economy. This treatment involves the recycling of different types of materials, and the production of renewable energy - minimising the problem of landfills and preventing soil deterioration.

Ecostar continues to develop and improve its Dynamic disc screen, which it said the best on the market for the separation of different materials. The Ecostar anti-wrapping axles system, and flat hexagonal disc system are registered as a trademark. Ecostar Dynamic Screen with hexagonal discs is able to separate up to 100 tonnes/hour, and can be used for the treatment of industrial waste and MSW, recycling wood, C&D, soil and stones, PET and nylon, scrap metals, tyres and other materials.

Ecostar S.r.l. sells directly or through agents/ resellers worldwide, working with manufacturers and customers multinational market leaders in their fields.

BMT: A Sustainable and Reliable Process to produce Saleable Materials

In October 2009 Darlington, UK-based John Wade Group started operating its Biological-Mechanical Treatment (BMT) facility for approximately 50,000 tonnes of MSW from the Darlington region.

No odour complaints have arisen in the first year of operation

The biological part of the BMT - designed and installed by GICOM Composting Systems - is done in a two week bio-drying step in MSW tunnels.

During the biological process water is evaporated by heat generated from the breakdown of organic matter in the waste. Roughly one third of the input weight is lost this way. Although the plant is located in the proximity of a town, no odour complaints have arisen in the first year of operation.

After the bio-drying stage, material is taken to a recycling line. A crane dumps the material in a hopper, followed by a trammel screen. Roughly one third of the input weight is lost at this stage.

The screened out material still contains building materials and a high calorific fraction in the form of compost-like-material. Both groups of materials will receive further treatment in the future. For now it is mainly sent to landfill.

The larger fraction is separated by a windshifter, followed by a hand-picking line. The fractions that are taken out are remarkably clean.

The company manages to sell these products on the recycling market and receives compliments on how clean it is. This BMT process produces saleable materials such as paper, plastics, PET, glass and metals. The simplicity of the process enables it to be highly reliable - the plant hardly knows any down-time.

The John Wade Group plant acts locally and has proved to be affordable on a city or council-scale. This also means that transport-costs and transport-pollution are kept to a minimum, compared to large scale incineration facilities that need to be fed 24/7 with waste.

Contact Luc Klunder of GICOM Composting Systems,, tel +31 321 332682

Biowaste Treatment: Komptech Expertise

The two main treatment options for biowaste are composting or fermentation. Through the composting process nutrients like nitrogen, phosphorus or magnesium again become available for the biosphere.

Example process for a yard waste composting plant

Industrial composting enhances the natural process with the aid of machines, and allows a certain control to influence the quality of the process (e.g. by limiting odour emissions) as well as of the compost-product.

Industrial composting consists of three main steps - shredding, composting and screening. Additionally mixing, wind sifting and metal separation can be added. Shredding is done with high-speed (the new Axtor) or low-speed (Crambo) wood shredders. Composting can be done in the open without roof, under a roof, or closed in halls or tunnels. For turning of the material windrow turners are used (Topturn). For screening mainly drum screens (the new Cribus series) are used, less often also star screens (Multistar).

During the composting time proper conditions have to be provided to achieve the required compost quality within the shortest possible time. These conditions include: sufficient supply with air, by preparing a material mixture with a density below 0,6 t/m³; and sufficient but not too high moisture content, by preparing the material and if necessary irrigating the material.

Solum Group enters UK Market

Solum Gruppen of Denmark is to open a UK office to identify and deliver projects for its Aikan® ‘Dry’ Anaerobic Digestion and In-vessel Composting technology in the UK and Ireland.

Aikan has invested heavily in gaining an in-depth understanding of the AD phase and how to optimise it

Solum Gruppen has been processing organic waste for over a quarter of a century, and has delivered a number of projects utilising the Aikan process in Denmark and Norway.

Henrik Mortenson, business development director, explained: “The fact we are partners in the operation of these plants, along with our in house experience in organic processing, has given us a real insight from both the financial viability and logistical practicality standpoint into what it takes to deliver successful processing plants.”

To further its knowledge base and as a tool for customers, Aikan has installed a scaled down version of the process to facilitate the collection of hard data on any particular waste stream. The decision to expand is based on a number of factors, including the UK’s policy on AD and the FIT scheme.

For more information on the benefits of the Aikan® technology in the UK please contact Peter Hallam.
Tel: +44 (0)7801 540704 or email:

Legioblock: The Flexible Storage Solution

In short the Legioblock® Construction system enables the rapid construction of solid walls that can be extended or moved at anytime. Legioblock is like a bigger version of the Lego building blocks for kids, only in a heavy weight concrete version. It’s the ideal solution for any company that deals with bulk materials such as biowaste, to temporarily or permanently, optimise its storage capacity.

Legioblock franchise opportunities are available in Spain, Portugal and Turkey

It is also a very rapid solution. Legioblocks are delivered directly from stock, which means very short delivery lead times.


With production locations in the Netherlands and Germany, A. Jansen B.V. is the main supplier of interlocking concrete building blocks in Northern Europe. In the last 15 years, the Legioblock has developed as a high quality product and is used by many recycling companies to optimise their storage capacity for bulk materials. In order to expand the Legioblock concept worldwide, A. Jansen B.V. is looking for franchisees in and around Spain, Portugal and Turkey.

As a franchisee, you will produce and sell Legioblocks in your own region. We guarantee region exclusivity and offer great support. If you are interested in this business opportunity, please contact us for more information.
Email: or tel: +31 499 462 897.

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