Feasibility Study of Treating Field Military Wastewater by a Process Including Powdered Carbon Adsorption, Polymer Coagulation, and Diatomite Filtration

摘要

Previous investigations of the use of powdered carbon and organic coagulants for treating wastewaters having characteristics similar to those generated at military bases were surveyed and assessed. Synthetic wastewater consisting of tap water, dishwashing detergent, laundry detergent, soap, clay, oil and food constituents, was prepared for the feasibility and mechanism studies of treating the wastewater by a proposed adsorption/coagulation/filtration system. Operational parameters selected for laboratory optimization studies of the treatment system were: initial pH and temperature of wastewater; contact time of carbon adsorption; types and dosages of powdered carbons; types and dosages of polymers; feed time and feed order of carbon and polymer; retention time of polymer coagulation; and the efficiency of diatomite filtration. Based on the experimental results, the technical feasibility of the proposed treatment system was positively demonstrated, the suitable types of carbon and polymer were selected, and the controlling parameters were optimized.