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Main articles: Waste collection vehicle, Dustbin, and Waste sorting Molded plastic, wheeled waste bin in Berkshire, England Waste collection methods vary widely among different countries and regions. Domestic waste collection services are often provided by local government authorities, or by private companies in the industry. Some areas, especially those in less developed countries, do not have a formal waste-collection system. Examples of waste handling systems include: In Europe and a few other places around the world, a few communities use a proprietary collection system known as Envac, which conveys refuse via underground conduits using a vacuum system. Other vacuum-based solutions include the MetroTaifun® [14] single-line and ring-line automatic waste collection system, where the waste is automatically collected through relatively small diameter flexible pipes from waste collection points spread out up to a distance of four kilometres from the waste collections stations. In Canadian urban centres curbside collection is the most common method of disposal, whereby the city collects waste and/or recyclables and/or organics on a scheduled basis. In rural areas people often dispose of their waste by hauling it to a transfer station. Waste collected is then transported to a regional landfill. In China, Plastic pyrolysis or Tire pyrolysis is: the process of converting waste plastic/tires into industrial fuels like pyrolysis oil, carbon black and hydrocarbon gas.End products are used as industrial fuels for producing heat, steam or electricity. Pyrolysis plant is also known as: pyrolysis unit, plastic to fuel industry, tire to fuel industry, plastic and tire recycling unit etc.The system is used in USA, California, Australia, Greece, Mexico, the United Kingdom and in Israel.For example, RESEM pyrolysis plant that has been operational at Texas USA since December 2011, and processes up to 60 tons per day.[15] In Taipei, the city government charges its households and industries for the volume of rubbish they produce. Waste will only be collected by the city council if waste is disposed in government issued rubbish bags. This policy has successfully reduced the amount of waste the city produces and increased the recycling rate. In Israel, the Arrow Ecology company has developed the ArrowBio system, which takes trash directly from collection trucks and separates organic and inorganic materials through gravitational settling, screening, and hydro-mechanical shredding. The system is capable of sorting huge volumes of solid waste, salvaging recyclables, and turning the rest into biogas and rich agricultural compost. The system is used in California, Australia, Greece, Mexico, the United Kingdom and in Israel. For example, an ArrowBio plant that has been operational at the Hiriya landfill site since December 2003 serves the Tel Aviv area, and processes up to 150 tons of garbage a day.[16] In Saudi Arabia there is the world’s largest AWCS now being built in the vicinity of Islam’s holiest mosque (Mecca). During the Ramadan and Hajj 600,000 kilos, or 4,500 cubic meters, of waste is generated each day, which puts a heavy demand on those responsible for collecting the waste and litter. In the [14] MetroTaifun Automatic Waste Collection System, the waste is automatically collected from 74 waste feeding points spread out across the area and then transferred via a 20-kilometre pipe network to a central collection point, keeping all the waste collecting activities out of sight and below ground with the central collection point well away from the public areas. In San Francisco, the local government established its Mandatory Recycling and Composting Ordinance in support of its goal of zero waste by 2020, requiring everyone in the city to keep recyclables and compostables out of the landfill. The three streams are collected with the curbside "Fantastic 3" bin system - blue for recyclables, green for compostables, and black for landfill-bound materials - provided to residents and businesses and serviced by San Francisco's sole refuse hauler, Recology. The City's "Pay-As-You-Throw" system charges customers by the volume of landfill-bound materials, which provides a financial incentive to separate recyclables and compostables from other discards. The City's Department of the Environment's Zero Waste Program has led the City to achieve 80% diversion, the highest diversion rate in North America.[17] While waste transport within a given country falls under national regulations, trans-boundary movement of waste is often subject to international treaties. A major concern to many countries in the world has been hazardous waste. The Basel Convention, ratified by 172 countries, deprecates movement of hazardous waste from developed to less developed countries. The provisions of the Basel convention have been integrated into the EU waste shipment regulation. Nuclear waste, although considered hazardous, does not fall under the jurisdiction of the Basel Convention. |
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