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environmental engineering dictionary and directory phần 7

Tham khảo tài liệu 'environmental engineering dictionary and directory phần 7', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | quench tank A water-filled tank used to cool incinerator residues or hot materials during industrial processes. quicklime A calcium oxide material produced by calcining limestone to liberate carbon dioxide also called calcined lime or pebble lime commonly used for pH adjustment. Chemical formula is CaO. Quick-Purge Soil and groundwater remediation technology by Integrated Environmental Solutions Inc. quicksand A loose wet unstable sand deposit caused by the upward pressure of sand and which may engulf an object. Quickwipe Quartz lamp cleaning technology used in UV disinfection systems by Calgon Carbon Corp. Quik-Clamp Clamp-on spray nozzle by USFilter Rex Link-Belt Products. Quik-Solid Granulated absorbent polymer by Colloid Environmental Technologies Co. R R B Filtration Sludge dewatering equipment product line of Baker Process. R D Research and development. RA 1 Reasonable alternative. 2 Regulatory alternatives. 3 Regulatory analysis. 4 Remedial action. 5 Resource allocation. 6 Risk analysis. 7 Risk assessment. rabble arms Rotating rake arms used to scrape sludge in a multiple hearth furnace. RAC Radiation Advisory Committee. race track See oxidation ditch. RACM 1 See reasonably available control measures RACM . 2 See regulated asbestos-containing material RACM . Racod Biological sensor to provide a rapid indication of BOD by USFilter Wal-lace Tiernan. RACT See reasonably available control technology RACT . rad Radiation absorbed dose. A measure of the absorbed dose of radiation. Radial Filter Tertiary filtration system by Waterlink Aero-Mod Systems. radial flow Direction of flow from either the center to the periphery or the periphery to center. Radial Plate Dryer Sludge drying system by B-H Process Systems. radial well A well system where one or more cylindrical screens are driven horizontally into a water-bearing stratum radiating from a central sump. radiation The transfer of energy by means of electromagnetic waves or high-speed particles. radiation sickness