Modelling and control of blackwater treatment in coal preparation

Conference · Fri Jul 01 04:00:00 EDT 1983

OSTI ID:6071685

FitzPatrick, J A; Vallario, R W

Blackwater streams emerging as effluents from coal-preparation plants typically contain considerable coal values which are rejected with waste solids. Additionally, new and proposed environmental regulations severely limit the use of coal-refuse ponds and encourage closed water circuitry. Optimization of flotation cells and thickening units to overcome these limitations has not been successful in most cases. Models are chosen here for simulating the two processes and examined from a theoretical and practical standpoint in application to coal-preparation problems. The emphasis of this analysis is to provide a rational basis for unit process control through proper model selection and application. Strengths and weaknesses of model approaches and developmental needs are also reviewed. 4 figures, 6 tables.

• Research Organization: Northwestern Univ., Evanston, IL (USA). Dept. of Civil Engineering; Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6071685
• Report Number(s): PNL-SA-9720; CONF-810520-8; ON: DE83015091
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800 -- Coal
Lignite
& Peat-- Waste Management
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
CARBONACEOUS MATERIALS
COAL
COAL PREPARATION PLANTS
COMPUTERIZED SIMULATION
CONTROL
DATA
DIAGRAMS
ENERGY SOURCES
EXPERIMENTAL DATA
FLOTATION
FLOWSHEETS
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
INFORMATION
LIQUID WASTES
MATERIALS
MINERAL WASTES
NUMERICAL DATA
OXYGEN COMPOUNDS
PROCESS CONTROL
RECOVERY
SEPARATION PROCESSES
SIMULATION
SOLID WASTES
WASTE WATER
WASTES
WATER
WATER TREATMENT