Iron powder and sand filtration process for treatment of water contaminated with heavy metals and organic compounds
AssigneeThe Trustees of the Stevens Institute of Technology
InventorsXiaoguang Meng, George P. Korfiatis
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Abstract
A water filtration device (3) and method which removes heavy metals and organic compounds from raw water is provided.
Claims17
A water filtration apparatus, comprising
- at least one iron filter having a vessel and a bed of metallic iron particles within said vessel;
- at least one source of vibratory energy positioned so as to provide vibratory energy to said bed of metallic iron particles without rocking, rotating or oscillating said vessel;
- and
- a sand filter positioned downstream of said iron filter and hydraulically connected thereto.
A water filtration apparatus, comprising
- at least one iron filter having a vessel and a bed of metallic iron particles within said vessel;
- at least one moveable auger which is in contact with said bed of metallic iron particles;
- and
- a sand filter positioned downstream of said iron filter and hydraulically connected thereto.
A method for removing heavy metals and organic compounds from a dilute aqueous stream using a filtration apparatus having at least one iron filter containing metallic iron particles, said method comprising the steps of
- passing the dilute aqueous stream through the water filtration apparatus while applying vibratory energy to said metallic iron particles, thereby removing metals and organic compounds from the dilute aqueous stream so as to form an effluent;
- and
- passing the effluent through a sand filter positioned downstream of said iron filter.
A method for removing heavy metals and organic compounds from a dilute aqueous stream using a filtration apparatus having at least one iron filter containing metallic iron particles and at least one moveable auger inside of said at least one iron filter, said method comprising the steps of
- passing the dilute aqueous stream through the water filtration apparatus while moving said movable auger so as to agitate at least some of said metallic iron particles, thereby removing metals and organic compounds from the dilute aqueous stream so as to form an effluent;
- and
- passing the effluent through a sand filter positioned downstream of said iron filter.
Dependencies are inferred from the claim text.