| Casella Waste Systems, Inc. Patent applications |
| Patent application number | Title | Published |
|---|
| 20100232880 | SYSTEMS AND METHODS FOR UNDERGROUND STORAGE OF BIOGAS - Systems and methods for producing purified biogas are disclosed. In one embodiment of the invention, a method includes collecting biogas from a landfill, transporting the biogas to a first well, injecting the biogas into the first well, and pressurizing the first well to store the biogas. | 09-16-2010 |
| 20100070358 | REC CREDIT DISTRIBUTION SYSTEM AND METHOD - A method for promoting recycling from a fund established with revenue generated from the sale of environmental and/or power generation attributes by an entity producing renewable energy. The method comprises providing a point system by which a recycling consumer is credited for recycled materials collected. Further, the method provides for a reward system for redemption of points accumulated by the recycling consumer, the reward system including redeemable fund certificates drawn against the fund. The method further includes collecting recyclable materials from the recycling consumer and crediting an account in the name of the recycling consumer based on the quantity and/or quality of the recyclable material collected. Then the method provides for awarding fund certificates to the recycling consumer upon the accumulation of a sufficient point level. | 03-18-2010 |
| 20100031560 | ENGINEERED FUEL FEED STOCK USEFUL FOR DISPLACEMENT OF COAL IN COAL FIRING PLANTS - Disclosed are novel engineered fuel feed stocks, feed stocks produced by the described processes, and methods of making the fuel feed stocks. Components derived from processed MSW waste streams can be used to make such feed stocks which are substantially free of glass, metals, grit and noncombustibles. These feed stocks are useful for a variety of purposes including co-firing with coal and as substitutes for coal. | 02-11-2010 |
| 20100018113 | ENGINEERED FUEL FEED STOCK - Disclosed are novel engineered fuel feed stocks, feed stocks produced by the described processes, and methods of making the fuel feed stocks. Components derived from processed MSW waste streams can be used to make such feed stocks which are substantially free of glass, metals, grit and noncombustibles. These feed stocks are useful for a variety of purposes including as gasification and combustion fuels. | 01-28-2010 |
| 20090028646 | System and method for treating landfill gas using landfill leachate - Embodiments of the present invention are directed to systems and methods for treating landfill gas using landfill leachate. In one embodiment of the present invention, a method includes receiving landfill leachate from at least one of a plurality of sources, and pretreating the landfill leachate to adjust at least one chemical property of at least one component of the landfill leachate. The leachate contacts landfill gas, so that at least one component of the landfill gas chemically reacts with at least one component of the landfill leachate to form a spent landfill leachate and a treated landfill gas. The method also includes recycling a first portion of the spent landfill leachate, recirculating a second portion of the spent landfill leachate to at least one of the plurality of sources, and subjecting the treated landfill gas to flare. | 01-29-2009 |
| 20080290006 | Systems and methods for optimizing a single-stream materials recovery facility - Systems and methods for sorting a plurality of recyclable items in a single-stream materials recovery facility (SSMRF) are provided. In some embodiments, a system includes an infeed conveying system, a fiber transfer conveyor, a container transfer conveyor, and a glass sorting and conveying system. The system further includes a controller configured to obtain total weight and volume of recyclable items at the infeed conveying system. The controller estimates a percent weight of fiber items and a percent weight of non-fiber items relative to the total weight. Based on the estimates, the controller controls speed of at least one of the infeed conveying system, the fiber transfer conveyor, the container transfer conveyor, and the glass sorting and conveying system. | 11-27-2008 |
| 20080237093 | Systems and Methods For Sorting Recyclables at a Material Recovery Facility - Systems and methods for providing a quantity of cullet having at least two colors of glass from an input stream of recyclable material and non-recyclable material. In an embodiment, the system includes a sortation station, a screening apparatus, an air classifier, and a crushing apparatus to provide as output substantially pure cullet having at least two colors. | 10-02-2008 |
