3 Significant Waste Disposal Methods in UK

3 Significant Waste Disposal Methods in UK audio:

With massive waste produced everyday all over the world, its disposal and reducing the same has been a concern for decades now. Though improvements have been made in rubbish disposal methods by waste removal services, UK, they should also be well adopted by the citizens.

Some of the environmental-friendly methods which are common in UK are stated below.

1. Landfill

Each year approximately 111 million tonnes, or 57%, of all UK of controlled waste namely household, commercial and industrial waste are disposed of in landfill sites in UK. Some waste from sewage sludge is also dumped in landfills, along with rubbish from mining and quarrying.

There were approximately 4000 landfill sites in the UK as of 1994. Methane is released in considerable quantities when landfill waste decomposes. It has been estimated that over 1.5 million tonnes of methane are released by landfill sites in the UK each year. Methane being is a strong greenhouse gas adds to global warming.

Waste removal service London is working to dispose waste in a way that is less harmful for the environment and better for the future.

2. Incineration

Incineration is the second most common method of waste disposal. In UK alone, approximately 5% of household waste, 7.5% of commercial waste, and 2% of industrial waste is disposed of by this process. A large amount of energy is given off when burning waste. Recent incinerators use this energy to generate electricity and hence prevent energy from being wasted.

In the 1990's, many hospitals in UK had clinical waste incinerators. However, emissions from the burning of hazardous hospital waste were found to be considerably higher. As a result many hospitals were forced to shut the incinerators down under the Environmental Protection Act of 1990.

Today, waste removal service, UK, work to share one large incinerator to dispose of the wastes for a number of hospitals.

3. Anaerobic Digestion

This is a more sustainable method where waste is decomposed in a similar manner as in landfill sites, but in enclosed chambers. An oxygen-free environment is required for anaerobic digestion to take place. This environment allows bacteria to thrive by using the oxygen that is chemically combined within the waste. They decompose waste by breaking down the particles to form gaseous by-products (methane) and small amounts of solid residue. Anaerobic sewage plants yield significant quantities of methane, which can be burnt to produce electricity. Organic fertilisers like liquid and solid are also formed which can be sold to cover operating costs.

Anaerobic digestion is not a major waste disposal method in the UK. It has only a small quantity of plants, and each can handle approximately 260-300 tonnes of waste per year. However, waste removal service London along with the authorities is currently working to develop plants to increase the usage of anaerobic digestion.

Apart from these 3 major waste removal methods, there are a few as well.

·   Pyrolysis

This is a morerecent method used by waste removal service, UK, which heats organic waste without oxygen to produce carbonaceous char, oils and combustible gases. To degrade the waste materials low temperatures of about 400-800°C are used. The Non-Fossil Fuel Obligation has encouraged the use of pyrolysis systems as a method to generate energy in the UK.

·   Gasification

Though similar to pyrolysis, higher operating temperatures are used, with 800-1100°C for air gasification, and 1000-1400°C with oxygen.

·   Composting

The waste removal service, London, is encouraging composting as the stabilised product can be added to soil to improve soil structure, and also act as a fertiliser and mulch. Organic waste, such as food or garden waste may be biodegraded by composting. This method may take place over as little as 4-6 weeks, by which time a stabilised product is produced.

These methods are to help the UK meet maximum of recycling and composting from every household.

Must-mention sources: http://www.enviropedia.org.uk/Sustainability/Waste_Disposal.php

https://www.lordgrey.org.uk/~f014/usefulresources/aric/Resources/Fact_Sheets/Key_Stage_4/Waste/03.html

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