Abstract: The present invention relates to a device for the storage and treatment of biodegradable wet solid waste, especially for vegetarian household waste materials. The device consists of a bucket shaped container with a mesh bottom and a removable cover with a hole at the center. The container is provided with a leachate collection basket at the bottom, which is mounted on an iron stand to hold the device. Openings are provided on the lateral surface of the basket for ventilation. The waste is added to the container from the top by hand lifting the lid. The ventilation facilitates degradation of the material in side the container, reducing the release of odour and, leachate. The volume of the waste also gets reduced because of self-compaction. In one embodiment the storage and treatment device is provided in the form of a house hold kit.

Abstract: The present invention relates to a device for the storage and treatment of biodegradable wet solid waste, especially for vegetarian household waste materials. The device consists of a bucket shaped container with a mesh bottom and a removable cover with a hole at the center. The container is provided with a leachate collection basket at the bottom, which is mounted on an iron stand to hold the device. Openings are provided on the lateral surface of the basket for ventilation. The waste is added to the container from the top by hand lifting the lid. The ventilation facilitates degradation of the material in side the container, reducing the release of odour and, leachate. The volume of the waste also gets reduced because of self-compaction. In one embodiment the storage and treatment device is provided in the form of a house hold kit.

Abstract: The present invention relates to a method for direct treatment of liquid wastes containing up to 10% or 100,000 mg/L of arsenic by solidification/stabilization in a relatively cost effective and environmentally safe. The method also permits the simultaneous utilization other heavy metal bearing wastes (such as spent catalysts), in the solidification/stabilization of liquid wastes containing very high concentration of arsenic. It also deals with a method for converting liquid wastes containing very high concentration of arsenic into a non-leachable solid residue ready for final disposal. The direct treatment of liquid wastes containing very high concentration of arsenic by solidification/stabilization will eliminate the additional stage of converting liquid wastes to solid or semi-solid form prior to solidification/stabilization, thereby significant reduction in overall cost associated with arsenic waste treatment.

Abstract: The present invention relates to a method for direct treatment of liquid wastes containing up to 10% or 100,000 mg/L of arsenic by solidification/stabilization in a relatively cost effective and environmentally safe. The method also permits the simultaneous utilization other heavy metal bearing wastes (such as spent catalysts), in the solidification/stabilization of liquid wastes containing very high concentration of arsenic. It also deals with a method for converting liquid wastes containing very high concentration of arsenic into a non-leachable solid residue ready for final disposal. The direct treatment of liquid wastes containing very high concentration of arsenic by solidification/stabilization will eliminate the additional stage of converting liquid wastes to solid or semi-solid form prior to solidification/stabilization, thereby significant reduction in overall cost associated with arsenic waste treatment.