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WTI XGT GRIT REMOVAL SYSTEM
| Waste-Tech Inc. has been directly involved in the design, manufacture, supply and start up and testing of the XGT™ vortex grit removal technology since 1984. During that time, based upon experience with many installations, we have introduced a number of significant improvements to the system. These include the self-priming grit pump and vortex grit classifier. The XGT™ vortex grit system is designed to efficiently remove both fecal and vegetable matter ( corn, rice, beans, peas etc. ) from the grit in the grit chamber resulting in cleaner grit with considerably lower organic content. XGT submersible gearhead |
Grit settles within the lower hopper and is transferred by a self-priming pump system to washing / classification and dewatering plant. We also offer the 360° straight thru design for improved space utilization. The XGT™ tank with its sloping floor and specially arranged impeller provides the most ideal situation for maximum separation of mineral solids ( grit ) whilst rejecting light phase organic solids, which remain in the water flow.Two positive zones are set up within the inlet chamber, the outer zone being quiescent thus allowing the grit to move to the inclined floor of the chamber, with a central active zone that encourages the light phase organics to exit the trap. |
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The X-Impeller has a predetermined speed, which produces radial forces that allow the grit to fall into the collection hopper. This force acts on the lighter solids preventing them from entering the hopper and thus they are retained in the water flow. The classifying effect produced can be controllable by adjusting the impeller speed. Extensive model and full scale tests have shown that critical speeds exist for successful grit trapping whilst maintaining an ability to reject other solids.
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Grit removal combined with screening is a pre-requisite of wastewater treatment to make the ongoing effluent a manageable and consistent medium entering the next phase of treatment. Ideally screening of the main flow will be performed prior to grit removal. In cases where grit is removed from raw sewage, additional washing and classification is necessary before dewatering. The new XGT™ grit removal system is designed to provide the highest grit removal performance possible. The XGT™ grit removal system comprises a compact. circular trap located in the headworks of the wastewater treatment plant. Effluent enters tangentially, flows around the tanks and exits parallel to the inlet.
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Grit from the classifier outlet
Xgt in operation
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| XGT Grit Removal System advantages | |
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Low
cost and low energy usage |
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Compact design |
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High efficiency - takes full advantage of a gravitational settlement |
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Simple, slow rotating paddle mechanism, easy to maintain |
