Waste treatment process for removal of contaminants from aqueous, mixed-waste solutions using sequential chemical treatment and crossflow microfiltration, followed by dewatering | Health & Environmental Research Online (HERO)

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Citation
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HERO ID

1426281

Reference Type

Technical Report

Title

Waste treatment process for removal of contaminants from aqueous, mixed-waste solutions using sequential chemical treatment and crossflow microfiltration, followed by dewatering

Author(s)

Vijayan, S; Wong, CF; Buckley, LP

Report Number

NTIS/02996831_a

Volume

GRA and I

Issue

GRA and I

Abstract

It is an object of the claimed invention to combine chemical treatment with microfiltration process to treat groundwater, leachate from contaminated soil washing, surface and run-off waters contaminated with toxic metals, radionuclides and trace amounts of organics from variety of sources. The process can also be used to treat effluents from industrial processes such as discharges associated with smelting, mining and refining operations. Influent contaminants amenable to treatment are from a few mg/L to hundreds of mg/L. By selecting appropriate precipitation, ion exchange and adsorption agents and conditions, efficiencies greater than 99.9 percent can be achieved for removal of contaminants. The filtered water for discharge can be targeted with either an order of magnitude greater or lower than contaminant levels for drinking water.

Keywords

Benzene; *Cadmium; *Calcium; *Cesium 137; *Iron; *Lead; *Liquid Wastes; *Organic Matter; *Strontium 85; *Strontium 90; *Uranium; *Water Pollution Control; Adsorption; Bench-Scale Experiments; Contamination; Evaporation; Filtration; Inventions; Ion Exchange; Precipitation; Radioactive Waste Processing; Removal; Water Removal; Patent applications; EDB/052001; EDB/400102