Single Stream Recycling Equipment

Sunday, January 28, 2018

The Main Types Of Waste Sorting Techniques

By Gaz Hutchings

Effective recycling relies heavily on effective sorting. There are a wide range of sorting techniques on the market and here we review the five most common. But before we look at the different technologies, let us take a look at the different legislation controlling this growing industry. Organisations that are operating in the EU are bound by EU rules and regulations relating to the environment.

Legislation states that 50% of all household waste and 70% of all construction waste must be re-used or recycled by the year 2020. This looked like a huge challenge when first introduced, but as the introduction of new technology has aided this industry, so commentators believe it is achievable.

The industry consensus is that efficient separation of the different elements found in waste is essential for enabling the recovery of useful recyclable materials, This minimizes the amount of waste sent to landfill and allowing recyclable materials to be re used. Companies sort and recycle materials in order to extract value, so the need to make sure sorting processes are as effective and economical as possible is of huge importance.

Waste disposal companies involved with dealing with the sorting of waste materials will commonly use one of these five methods:

• Trommel screens or drum screens: These machines separate materials according to their particulate size. Raw waste material is fed into a large rotating drum which is perforated with holes of a certain size. Materials smaller than the diameter of the holes will be able to fall through, but larger particles will remain in the drum. Changing drum sizes can further separate the waste.

• Induction sorting: material is sent along a conveyor belt with a series of sensors underneath. These sensors locate different types of metal which are then separated by a system of fast air jets which are linked to the sensors.

• Eddy current separation: this method is used for the separation of metal types. An 'eddy current' occurs when a conductor is exposed to a changing magnetic field. Basically, it is a magnetic way of dividing ferrous and non-ferrous metals.

• Near infrared sensors: When materials are illuminated they mostly reflect light in the near infrared wavelength spectrum. The NIR sensor can tell the difference between different materials by the way they reflect light.

• X-ray technology X-rays can be used to distinguish between different types of waste based on their density.

Manual Sorting: It should also be mentioned that manual sorting of waste is still very much a technique that is used in the world today.

Worsley Plant are a leading plant sales and hire company that supplies the construction, demolition, waste management and recycling industries with the most comprehensive range of attachment based crushers and separators, as well as density separation equipment for the waste and recycling industry. To find out more visit http://www.worsleyplant.co.uk

Article Source: http://EzineArticles.com/expert/Gaz_Hutchings/2173480
http://EzineArticles.com/?The-Main-Types-Of-Waste-Sorting-Techniques&id=9335433

Sunday, January 21, 2018

Waste Disposal and Recycling

Waste disposal has become a huge issue in this day and age and the disposing of it is something which has become a big business in its own right. The huge amount of waste which is generated every day and which ends up being transported all over the country is phenomenal so the recycling of waste is something which has to be taken seriously. There are a myriad of possibilities for all sorts of waste although one has to be careful to use appropriate recycling methods to ensure best quality products are made out of waste.

The sorting of waste and its reuse is an issue which continually dominates government policy. With the issue of global warming on the horizon, the incineration of waste should be avoided as much as possible. So the main thrust of waste disposal should be on the actual recycling of all materials which can then be used for different purposes. A typical example is the supply of crushed brick and hardcore which may be used for car parks, garages and drives, among others. Today’s big recycling plants can deliver tens of thousands of tonnes of such materials which all come from excess waste construction material. Read More Waste Disposal and Recycling

Sunday, January 14, 2018

Why Waste to Energy? or (WTE)

Landfilling waste is unsustainable. There are initiatives across the globe aimed at decreasing waste sent to landfill. The fact is there will always remain some amount of residual waste. Changing the way this residual waste is processed and viewed will be a critical decision for our future (waste to energy).

There is a lack of public knowledge regarding the disposal of the waste that individuals create. This lack of knowledge causes people to disassociate the responsibility that they have for the disposal and treatment of the waste they produce. Providing the public with a direct connection of what is happening to their waste and where it is being disposed of will be a key factor in changing peoples’ behavior towards waste.

Read More

Sunday, January 7, 2018

Different Types Of Cardboard Boxes

By Shane McConnell

There is much more to a cardboard box than one might realize. These prefabricated boxes come in many types and within industry, they are not referred to using the term "cardboard" because that does not denote their material composition. Cardboard is used to refer to different paper-type materials like corrugated fiberboard, paperboard, recycled, and card stock. Getting a brief education on box materials allows consumers to know exactly what they are using.

Corrugated fiberboard consists of one or two flat linerboards encasing a fluted corrugated sheet. This paper-based material is used to manufacture shipping containers and corrugated boxes. The linerboard and corrugated sheet are made from containerboard, which is a paper-like material measuring more than 0.01 inches thick. Corrugated boxes originated in the mid-19th century and were initially used to package pottery and glass containers.

Paperboard is usually 0.01 inch thicker than paper. ISO standards designate paperboard as paper with more than a 224 g/m basis weight, with exceptions. Paperboard can be single ply or multi-ply and is lightweight and easy to form and cut. Since it is strong, it is useful as packaging material. The first carton made from paperboard was produced in England in 1817. By the 1860s, folding cartons were available and by 1974, ovenable paperboard had been discovered.

Recycled cardboard boxes are created from cardboard packaging waste from residential households and companies dealing in packaged goods. Wood pulp manufacturers often deal directly in recycled cardboard materials, repurposing them into new cardboard boxes. The energy savings provided by recycling cardboard is estimated to be 24 percent. Prices of recyclable cardboard fell in 2008 and then increased in 2009. It is easier to recycle cardboard packaging from food products than plastic but shipping costs are higher and more waste may be created from spoilage.

Shipping boxes are usually made from either corrugated cardboard or paperboard. A set-up box is made from non-bending paperboard. Folding cartons are transported and stored flat, then put together when filled. Set-up boxes are assembled during manufacture and transported in their set-up state. These are more expensive than folding cartons and are often used as gift boxes or for high-ticket items.

The rectangle is the most common box shape and sizes vary from tiny to those that fit a large appliance. Durability depends on the type of material used to make the box, with some materials more suitable for packaging certain items. Before they purchasing cardboard shipping or storage boxes, consumers should research the actual material used to make the box.

Article Source: http://EzineArticles.com/expert/Shane_McConnell/773662
http://EzineArticles.com/?Different-Types-Of-Cardboard-Boxes&id=6152841

Sunday, December 31, 2017

Recycled Plastic Lumber - Does it Help the Environment?

By Lewis Walch

What Is Plastic Lumber

Plastic lumber is a wonderful raw material, it is made entirely of recycled or virgin plastic. For Instance, Unwanted plastic bottles, furniture, plant pots, you name it. If its made of plastic, it can be recycled and used again. Not only that, it is said to be more environmentally friendly than its counterparts, this is because there is less work involved in producing it. If it is processed correctly then it will uphold the same stability in its molecular structure as virgin plastic does, making it robust, flexible and resistant. This makes recycled plastic timber ideal for the manufacturing of outdoor and garden products. Therefore recycled plastic upholds and maintains the ideal of what recycling is all about.

The History Of Recycled Plastic Lumber

Well, for manufacturing purposes it is still a relatively new raw material, the potential widespread use of it is limitless. Not only is it immune to degradation but it can be repeatedly reused, which is a major advantage in the building industry.

The Composition Of Recycled Plastic Lumber

The lumber is made up of a mixture of unwanted and/or virgin plastic. Once made into a powder or pellets, they are heated to 400 degrees Fahrenheit. The mixture them becomes very squidgy. Numerous other agents can be added such as stabilizers, colourings and lubricants to create the final composition to further increase the standard that is produced.

So Does The Lumber help the environment?

Yes of course it does:

  • It keeps virgin and unwanted plastic out of landfill where it does not rot.
  • The process of manufacturing it does not use as much energy as it would to make the virgin plastic.
  • Recycled plastic can be made to imitate a large number of other materials such as wood and it does the job perfectly.
  • The lumber can be molded to form tables, chairs, benches, birdboxes, compost tumblers, fences, raised beds for the garden and a whole number of other products can be made from it time and time again.
  • The colourisation of recycled plastic lumber otherwise know as recycled plastic wood is determined in the manufacturing process, skipping out the need to paint it. It is available in a huge variety of colours.

Article Source: http://EzineArticles.com/expert/Lewis_Walch/541004
http://EzineArticles.com/?Recycled-Plastic-Lumber---Does-it-Help-the-Environment?&id=3707755

Sunday, December 17, 2017

Optical Sorting Applications in the Recycling Industry

By Joshua D. James

Optical sorting applications in the recycling industry gather every possible inch of recyclable material. With this photo process recycling is able to gain every ounce of environmental material. Regaining resources is important. With population growth and more countries developing an industrial economy, greater demand is placed on environmental resources.

Plastic recycling equipment is more effective in reclaiming material moving across the recycle belt. With an optical sorting application in the recycling industry a company has the ability to gather more material with automatic optical solutions. The advantage of using sensors to increase productivity is promoted by the use of sorting machines. This operates with a computing system designed with an easy to use interface that directs sensors that detect the level of plastics and channels them to the necessary bins. The sorting machine detects, sorts and controls the washing, separating and size reduction of plastics on the conveyor belt.

Each item lost is money down the drain. This loss can decide whether a company makes a profit or stays at a financial disadvantage. Single stream recycling clears recycled material of any non-usable materials and gets it ready for the specific channels that move it to the packaging point to be delivered to the end user.

There are many elements sorted in recycling, aluminum, plastic, and glass, card board and other valuable materials. Efficient management of these products increases profits. Sorting machines speed waste recovery, allowing more materials to be kept for productive accumulation. This special technology helps improve material sorting when inspected by the human eye.

The use of a sorting machine aids in the recycle process. Some companies use a single commodity sorting process. This can be done with any kind of material, paper, glass or electronic devices. Some companies specialize in aluminum or plastic recycling collecting the maximum material for the greatest financial gain. Trash piles are filled with materials that have the capacity to earn money. Sorting machines lessen the loss of missed materials moving through the conveyor area. Recycling plants are able to package and move a tremendous amount of merchandise by enabling optical sorting applications in busy facilities.

Optical sorting applications are extremely important to the recycling industry, as well as solid wastes, because they help separate various materials regardless of whether they can be reused. Optical sorting application continue to advance and the most state-of-the-art trash sorting facilities keep up with the latest advancements in order to effectively sort solid wastes, e-waste and other materials that humans dispose of.

Learn about optical sorting applications in the recycling industry, as well as solid waste management facilities.

Article Source: http://EzineArticles.com/expert/Joshua_D._James/1384896
http://EzineArticles.com/?Optical-Sorting-Applications-in-the-Recycling-Industry&id=7720902

Optical Sorting Applications

Saturday, December 2, 2017

Anaerobic Digestion for Energy and Biofuel from Municipal Solid Waste

Globally refuse disposal is still one of the great growth industries of our time. The majority of what we buy and use, is destined for the dustcart, and in an ever shorter time and breaking all previous records for quantity as civilization becomes more affluent.

We purchase great quantities of goods which come with a relatively short lifespan and abundant quantities of packaging material. In times gone by many of us composted our putrescible waste in our gardens ad vegetable plots.

Gardens are getting smaller, we grow fewer food crops, and there is little room left for the compost heap and the garden bonfire is often banned due to clean-air regulations.

Dustbins are getting larger and refuse collection authorities are becoming more efficient and helpful in collecting ever larger quantities of household refuse and civic amenity wastes.

To reduce the sheer bulk of waste destined for our landfill sites, to extend their operating lives and to minimize the environmental and safety hazards of the materials delivered unto them, there is increasing public and legislative pressure to recycle and reuse a greater proportion of the discarded possessions we call "municipal solid waste" ("MSW").

There is also a growing demand for energy and for that energy to be "green" and not from a fossil fuel based source which contributes to the greenhouse gas effect and climate change. There are lots of ways that waste, with its locked-in energy, can be used as a fuel source, but one of the very best, if not the best is a process called Anaerobic Digestion.

The scope for anaerobic digestion of MSW "putrescibles" becomes apparent when one examines the composition of household refuse and the limitations of existing recycling schemes. The big advantage possessed by anaerobic digestion is that using it to produce "biogas" can not only provide a fuel for ordinary diesel generators, but also can be converted into biofuel which can be used in the automotive industry. This can potentially provide us with green fuel in the place of fossil fuels which are saved.
Anaerobic Digestion is still a technology which needs a lot of improving and developing though. There are quite a few problems in using it reliably for the fermentation of wastes, despite the fact that Anaerobic Digestion has been used for sludge digestion at sewage works for at least 50 years.

The problems become apparent when one examines the cost and complexity of the anaerobic digestion equipment and the need to find appropriate outlets for the "refined digestate" liquid it produces.

The incentives derive from consideration of the alternatives:

  • The other alternatives, including refuse-sorting and incineration, refuse-derived fuels and refuse-reclaimed materials do not seem likely to offer an obvious straight forward quick-fix solution.
  • Landfilling is generally considered to be cheap and effective, if it's available, if it's acceptable in the locality, and it will always be required as the ultimate resting place for a small proportion of our refuse.
  • But landfill sites do fill up and the problem always remains of finding appropriate new sites..

To summarise this we would say that:

  • Household waste is inherently putrescible (compostible), and provides a natural material for decomposition by methane bacteria.
  • It will ferment naturally, in a landfill, which even when lined and capped is at comparatively little cost.
  • But, landfills do bring with them considerable environmental and safety hazards. They require extensive gas abstraction and leachate control systems to protect neighbouring crops, neighbouring properties and underground water supplies. Even then possibly 30% to 50% of the methane produced leaks out and can't be collected..
  • Household waste will also ferment rapidly in anaerobic digestion plants to provide a convenient source of biogas as fuel and a stabilised "digestate" for landfilling, or refining into useful soil conditioners and soil substitutes for agriculture, forestry or land reclamation. .
  • It will capture almost 100% of the methane produced, and this methane can also be processed into a automotive biofuel. It is carbon negative (helps reduce carbon emissions) and "green".
  • Anaerobic Digestion technology may not be as reliable as other processes and the cost is high at present, but further investment in research into the processes will almost certainly be able to improve reliability very rapidly.>

Shouldn't you consider Anaerobic Digestion for your waste processing solution?.

Steve Evans is an waste management engineer and a regular contributor of resourve management and dog breed related articles.

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