Covanta Solutionshttp://www.covantasecureservices.com/2009-11-05T01:04:15ZThe EFW Processhttp://www.covantasecureservices.com/site/solutions/the-efw-process.html2009-11-05T01:04:15Z
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<p><span style="font-size: x-small"> A typical Covanta Energy-from-Waste facility</span></p>
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<p> <img height="265" alt="" width="414" align="top" src="/uploads/25/Image/wte.gif" /></p>
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<p>1.<br />
2. <br />
3. <br />
4.<br />
5. <br />
6.</p>
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<p>Tipping Floor<br />
RefuseHolding Pit<br />
Grapple Feed Chute<br />
Feed Chute<br />
MARTIN Stoker Grate<br />
Combustion Air Fan</p>
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<p>7.<br />
8.<br />
|9.<br />
10.<br />
11.<br />
12.</p>
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<p>MARTIN Ash Discharger<br />
Combustion Chamber<br />
Radiant Zone (furnace)<br />
Convection Zone<br />
Superheater<br />
Economizer</p>
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<p>13.<br />
14.<br />
15.<br />
16.<br />
17.</p>
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<p>Dry Gas Scrubber<br />
Baghouse<br />
Fly Ash Handling System<br />
Induced Draft Air Fan<br />
Stack</p>
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<font size="4"><strong>The Process</strong></font><br />
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<p>After refuse collection trucks are weighed at the scalehouse and monitored for safety, they enter the tipping building and dump their waste into the storage pit. An overhead crane mixes the waste in the pit and lifts it up into a feed chute leading to the furnace. From the feed chute, waste is pushed by hydraulic ram feeders onto a stoker grate.</p>
<p>The MARTIN Reverse-Reciprocating Stoker Grate slopes downward and is composed of alternating rows of fixed and moving grate bars. The grate bars push upward against the natural downward movement of the waste. This ensures that the burning waste is continually agitated and pushed back, to serve as underfire for freshly-fed waste. A forced-draft fan supplies primary combustion air underneath the grate, and overfire air is injected through the front and rear walls of the furnace.</p>
<p>Heat from the combustion process converts water inside the steel tubes that form the furnace walls and boilers, to steam. The superheater further heats the steam before it is sent to a turbine generator to produce electricity. After passing through the boiler sections, the hot combustion gases are used to preheat boiler feedwater in the economizer.</p>
<p>While the combustion gases move through the boiler, bottom ash slowly makes its way to the end of the grate where it falls into the water quench trough of the MARTIN Ash Discharger. From the boiler, the cooled gases enter the advanced air pollution control system. Using lime slurry, the dry scrubber neutralizes any acid-forming gases, such as sulfur oxides and hydrogen chloride.</p>
<p>Particulates are captured by a high-efficiency baghouse. As the gas stream travels through these filters, more than 99 percent of particulate matter is removed. Captured fly ash particles fall into hoppers and are transported by an enclosed conveyor system to the MARTIN Ash Discharger where they are wetted to prevent dust, and mixed with the bottom ash from the grate. The ash residue is then conveyed to an enclosed building where it is loaded into covered, leak-proof trucks and taken to a landfill designed to protect against groundwater contamination. Ash residue from the furnace can be processed for removal of recyclable scrap iron.</p>
<p>All aspects of the plant's operation are monitored from a central control room 24 hours a day, seven days a week, 365 days a year.</p>
<p>Covanta operates ten different types of Energy-from-Waste technologies, representing virtually every proven system in the world including the Martin Gmbh inclined and horizontal grates technologies.</p> EfW Facilitieshttp://www.covantasecureservices.com/site/solutions/efw-facilities.html2010-02-04T15:07:05Z
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<p>As a world premier operator of large-scale Energy-from-Waste (EfW) or waste-to-energy (WTE) facilities, Covanta Energy is proud to offer an environmentally sound solution to communities' solid waste disposal needs. The highlighted modern EfW facilities provide Secure Services.</p>
<p><strong>EfW Facilities</strong> (Sorted by State) <br />
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<p><strong><u>California</u></strong><br />
<a href="/site/stanislaus/covanta-stanislaus.html">Stanislaus County</a><br />
<br />
<strong><u>Connecticut</u></strong><br />
<a href="/site/seconn/covanta-seconn.html">SECONN</a></p>
<p><strong><u>Florida</u></strong><br />
<a href="/site/locations/covanta-lake.html">Lake County</a></p>
<p><u><strong>Indiana</strong></u><br />
<a href="/site/locations/covanta-indianapolis.html">Indianapolis</a></p>
<p><strong><u>Hawaii<br />
</u></strong><a href="/site/locations/covanta-honolulu.html">Honolulu</a></p>
<p><strong><u>Massachusetts<br />
</u></strong><a href="/site/haverhill/covanta-haverhill.html">Haverhill</a><br />
<a href="/site/locations/covanta-pittsfield.html">Pittsfield</a><br />
<a href="/site/semass/covanta-semass.html">SEMASS</a><br />
<a href="/site/locations/covanta-springfield.html">Springfield</a></p>
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<p><u><strong>Minnesota</strong></u><br />
<a href="/site/hennepin/covanta-hennepin.html">Hennepin County</a></p>
<p><u><strong>New Jersey</strong></u><br />
<a href="/site/locations/covanta-essex.html">Essex County</a><br />
<a href="/site/locations/covanta-union.html">Union County</a><br />
<a href="/site/locations/covanta-warren.html">Warren County</a></p>
<p><strong><u>New York<br />
</u></strong><a href="/site/locations/covanta-hempstead.html">Hempstead</a><br />
<a href="/site/locations/covanta-huntington.html">Huntington</a><br />
<a href="/site/locations/covanta-niagara.html">Niagara</a><br />
<a href="/site/onondaga/covanta-onondaga.html">Onondaga County</a></p>
<p><strong><u>Oklahoma<br />
</u></strong><a href="/site/locations/covanta-tulsa.html">Tulsa</a></p>
<p><u><strong>Oregon</strong></u><br />
<a href="/site/marion/covanta-marion.html">Marion County</a></p>
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<p><u><strong>Pennsylvania</strong></u><br />
<a href="/site/locations/covanta-delaware.html">Delaware Valley</a><br />
<a href="/site/locations/covanta-lancaster.html">Lancaster County</a><br />
<a href="/site/locations/covanta-plymouth.html">Plymouth</a></p>
<p><u><strong>Virginia</strong></u><br />
<a href="/site/locations/covanta-alexandria-arlington.html">Alexandria/Arlington</a><br />
<a href="/site/locations/covanta-fairfax.html">Fairfax County</a><br />
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</p> Covanta Solutionshttp://www.covantasecureservices.com/site/solutions/covanta-solutions.html2009-09-16T01:59:44Z
<p>Covanta currently operates over 40 Energy-from-Waste facilities in North America, Europe, and Asia. We also operate a diverse global portfolio of other energy plants that use a variety of technologies. Our facilities have earned a reputation for reliability, safety, efficiency, and environmental responsibility.</p>
<p>We invite you to have a look at how we turn waste into energy, the other energy generation methods we employ, and the communities we serve.</p> EfW Solutionshttp://www.covantasecureservices.com/site/solutions/efw-solutions.html2009-06-30T18:58:08Z
<p><strong>How do we do it?<br />
</strong>At our facilities, non-hazardous municipal and commercial solid waste is combusted in water-cooled furnaces at temperatures greater than 2,000 degrees Fahrenheit. The process reduces the waste to an inert ash that is only about 10% of its original volume. Additionally, all Covanta facilities use advanced air pollution control equipment and monitoring devices, which maintain strict state and federal emission standards. Many of our facilities also have wastewater treatment capabilities that make it unnecessary to discharge processed water into the local sewer system.</p>
<p>For every ton of waste processed in an EfW facility, we avoid the need to import nearly 1 barrel of oil or mine a quarter ton of coal. Annually, we process more than 15 million tons of waste, which saves this nation nearly 15 million barrels of oil.</p>
<p>We are proud of our facilities and welcome tours from interested community groups and individuals. Please call your local facility to schedule a visit.</p>
<p><strong>Energy-from-Waste: a proven technology worldwide</strong><br />
Energy-from-Waste facilities process 14% of municipal solid waste in the United States, serving the disposal needs of more than 37 million people and producing enough electricity for 2.8 million homes. In Europe, Energy-from-Waste is more prevalent, and plans to construct new facilities are being prepared, due largely to the European Union's waste management directives aimed at minimizing landfills. In fact, the European Union points to energy recovery from waste as preferable to raw garbage landfills in its hierarchy of preferred waste management options. Similarly, Energy-from-Waste technology is used extensively in Japan and other Asian countries, which rely on modern Energy-from-Waste technology to generate renewable power and reduce the need for landfills. It is estimated that there are more than 600 Energy-from-Waste facilities worldwide.<br />
</p> Environmental Stewardshiphttp://www.covantasecureservices.com/site/solutions/environmental-stewardship.html2009-07-16T21:12:20Z
<p><strong>Protecting Our Environment</strong></p>
<p>Covanta takes its role as an environmental steward and global citizen very seriously. Protecting our natural resources for future generations is a fundamental principal of Covanta's mission.</p>
<p>In terms of our core business, Covanta offers renewable energy and environmentally friendly waste disposal solutions that:</p>
<ul>
<li>Offset greenhouse gases and combat global warming</li>
<li>Reduce the amount of waste landfilled, thereby protecting open space </li>
<li>Protect the environment by employing state-of-the-art equipment and systems</li>
<li>Maximize recycling and the reuse of resources (water, metals and ash)</li>
</ul>
<p>We have adopted an Environmental Policy that consists of five principals:</p>
<ol>
<li><strong>Protection</strong> - We will conduct our business in an environmentally sound manner that is protective of human health and the environment.</li>
<li><strong>Compliance</strong> - We will manage our work to ensure compliance with all applicable environmental regulations and requirements.</li>
<li><strong>Conservation</strong> - We will minimize impact to the environment by encouraging pollution prevention at the source, waste minimization, facilitating use of recycling opportunities and responsible disposal of any production by-products.</li>
<li><strong>Qualification</strong> - We will ensure that all employees have the necessary information, resources, and training to make informed environmental decisions.</li>
<li><strong>Commitment</strong> - Covanta is committed to be an industry leader in environmental protection by achieving superior awareness and performance through a process of continuous improvement.</li>
</ol>
<p>Energy-from-Waste is the most responsible means of solid waste disposal. It reduces the volume of waste, which must ultimately be disposed of in an environmentally friendly manner, generates valuable renewable energy, and results in a net reduction of greenhouse gas emissions when compared to conventional landfilling practices. According to the US Environmental Protection Agency (EPA), Energy-from-Waste facilities generate power "with less environmental impact than almost any other source of electricity."</p>
<p>Nearly all of Covanta's facilities are "renewable,” using municipal solid waste, landfill gas, wood and hydro power to generate electricity, while reducing our dependence on fossil fuels. Covanta processes approximately 16 million tons of municipal solid waste each year conserving 25,000,000 cubic yards of landfill space and generating 8,250,000-megawatt hours of electricity, the equivalent of burning 3.5 million tons of coal. All of Covanta's Energy-from-Waste projects feature state-of-the-art air pollution controls.</p>
<p>Covanta's efforts in pursuing environmental excellence have been widely recognized, as evidenced by the partial list below:</p>
<ul>
<li>Covanta Energy received the Energy Innovator Award from the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy.</li>
<li>Covanta U.S. facilities have consistently been recognized by the American Society of Mechanical Engineers for excellence in plant operations.</li>
<li>Covanta Alexandria admitted to the Virginia Environmental Excellence Program.</li>
<li>Covanta Honolulu received the KOA Community Environmental Achievement Award.</li>
<li>Covanta Kent received the Michigan Clean Corporate Citizen designation.</li>
<li>Covanta Lake received the Council for Sustainable Florida's "Sustainable Florida Promising Practices for Outstanding Achievement" award.</li>
<li>Covanta Mid-Connecticut received a U.S. EPA New England Environmental Merit Award.</li>
<li>Covanta Montgomery received the SWANA Waste-to-Energy Excellence Award.</li>
<li>Covanta SECONN received an EPA Environmental Merit Award.</li>
</ul>
<p>As an adjunct to our core business, we regularly participate in a variety of activities, examples of which include sponsoring specialized environmental clean-up programs, supporting vocational training programs, arranging for the provision of supplemental health care services in developing countries and responding to devastation resulting from natural disasters. Covanta strives to be a good neighbor and serve the communities in which we are located and in furtherance of that objective, we encourage each of our facilities to take an active role in their local communities and to contribute to charitable and civic activities.</p> Videohttp://www.covantasecureservices.com/site/solutions/video.html2009-11-05T16:44:12Z
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<p>Welcome to the Covanta Secure Services Video Library </p>
<p>Below are three links to Covanta Secure Services videos that will explain how Covanta Secure Services can help you manage your non-hazardous waste materials. Covanta Secure Services can manage most non-hazardous materials at our Nationwide Network of Waste-to-Energy facilities and in the process, we generate Renewable Energy from your waste.</p>
<p>If you have technical challenges viewing these videos, please email <a href="mailto:secureanswers@covantaenergy.com">secureanswers@covantaenergy.com</a> and request a copy of our NEW DVD.</p>
<p class="callout">All videos require the Apple Quicktime plugin. If needed, you may download the plugin <a href="http://www.apple.com/quicktime">here</a>.</p>
<div class="video">
<h3>Video - Non-Hazardous Special Waste Program</h3>
<img height="85" align="left" width="150" alt="" style="margin-right: 12px;" src="/uploads/11/Image/video_non-hazardous.jpg" /> <strong>Play Time: 8:41</strong><br />
<a href="javascript:createPopup('/video_non-hazardous.html')"><img border="0" vspace="5" alt="Watch Video" src="/uploads/11/Image/1166737539141.gif" /></a></div>
<div class="video">
<h3>Video - Assured Destruction Service</h3>
<img height="85" align="left" width="150" alt="" style="margin-right: 12px;" src="/uploads/11/Image/video_assured-destruction.jpg" /> <strong>Play Time: 3:37</strong><br />
<a href="javascript:createPopup('/video_assured-destruction.html')"><img border="0" vspace="5" alt="Watch Video" src="/uploads/11/Image/1166737539141.gif" /></a></div>
<div class="video">
<h3>Video - Covanta Niagara Offers Shredding Service</h3>
<img height="85" align="left" width="150" alt="" style="margin-right: 12px;" src="/uploads/11/Image/video_covanta-niagara.jpg" /> <strong>Play Time: 1:44</strong><br />
<a href="javascript:createPopup('/video_covanta-niagara.html')"><img border="0" vspace="5" alt="Watch Video" src="/uploads/11/Image/1166737539141.gif" /></a></div>
EfW Solutions
How do we do it? At our facilities, non-hazardous municipal and commercial solid waste is combusted in water-cooled furnaces at temperatures greater than 2,000 degrees Fahrenheit. The process reduces the waste to an inert ash that is only about 10% of its original volume. Additionally, all Covanta facilities use advanced air pollution control equipment and monitoring devices, which maintain strict state and federal emission standards. Many of our facilities also have wastewater treatment capabilities that make it unnecessary to discharge processed water into the local sewer system.
For every ton of waste processed in an EfW facility, we avoid the need to import nearly 1 barrel of oil or mine a quarter ton of coal. Annually, we process more than 15 million tons of waste, which saves this nation nearly 15 million barrels of oil.
We are proud of our facilities and welcome tours from interested community groups and individuals. Please call your local facility to schedule a visit.
Energy-from-Waste: a proven technology worldwide
Energy-from-Waste facilities process 14% of municipal solid waste in the United States, serving the disposal needs of more than 37 million people and producing enough electricity for 2.8 million homes. In Europe, Energy-from-Waste is more prevalent, and plans to construct new facilities are being prepared, due largely to the European Union's waste management directives aimed at minimizing landfills. In fact, the European Union points to energy recovery from waste as preferable to raw garbage landfills in its hierarchy of preferred waste management options. Similarly, Energy-from-Waste technology is used extensively in Japan and other Asian countries, which rely on modern Energy-from-Waste technology to generate renewable power and reduce the need for landfills. It is estimated that there are more than 600 Energy-from-Waste facilities worldwide.
