Use of coagulants to treat coking plant wastewater
Journal Article
·
· Coke Chem. USSR (Engl. Transl.); (United States)
OSTI ID:5163690
Laboratory investigations of the kinetics of precipitation of suspended matter were conducted on the wastewater of the Krivoi Rog Coke works, which was treated with coagulants in the form of 1% aqueous solutions. The water samples were collected from the air tank of the industrial biochemical treatment facilities. The initial concentration of suspended solids in the phenolic wastewater during the investigations was in the range of 1100-1200 mg/l; pH 6.4-7.4; alkalinity 1.5-3.0 mg-eq/l; hardness 0.75-0.84 mg-eq/l; and oxygen demand 250-270 mg O/sub 2//l. The other mean quality indices of the treated wastewater were, mg/l: chlorides 1072; sulfates 417; volatile ammonia 124; total ammonia 676; phenols 1.3; thiocyanates 4.3; total salts 2212; tars and oils 4.4. The coagulant dosage was determined by the method of test coagulation. In the course of the analyses the authors determined the suspended solids concentration of the residual iron and aluminum ions, as well as the pH in the collected samples. Then they determined the clarification effect (E, %), which was computed by the formula E = 100(C/sub r/ - C/sub c/)/C/sub i/, where C/sub r/ and C/sub c/ are the suspended solids concentrations in the raw water and in the treated water, respectively, mg/l.
- OSTI ID:
- 5163690
- Journal Information:
- Coke Chem. USSR (Engl. Transl.); (United States), Journal Name: Coke Chem. USSR (Engl. Transl.); (United States) Vol. 3; ISSN COKCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010401 -- Coal & Coal Products-- Carbonization-- (-1987)
010800* -- Coal
Lignite
& Peat-- Waste Management
ALUMINIUM COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
COKING PLANTS
DATA
EXPERIMENTAL DATA
FLOCCULATION
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
INFORMATION
IRON COMPOUNDS
LIQUID WASTES
MANAGEMENT
NUMERICAL DATA
OXYGEN COMPOUNDS
PRECIPITATION
PROCESSING
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER
010401 -- Coal & Coal Products-- Carbonization-- (-1987)
010800* -- Coal
Lignite
& Peat-- Waste Management
ALUMINIUM COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
COKING PLANTS
DATA
EXPERIMENTAL DATA
FLOCCULATION
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
INFORMATION
IRON COMPOUNDS
LIQUID WASTES
MANAGEMENT
NUMERICAL DATA
OXYGEN COMPOUNDS
PRECIPITATION
PROCESSING
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER