Determination of optimum operating conditions for industrial dye wastewater treatment using adaptive heuristic criticism pH control

• Published in: Journal of environmental management Vol. 85; no. 2; pp. 404 - 414
• Main Authors: Zeybek, Z., Yüce Cetinkaya, S., Alioglu, F., Alpbaz, M.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01-10-2007; Elsevier; Academic Press Ltd
• Subjects: AHCC algorithm; Algorithms; Animal, plant and microbial ecology; Applied ecology; Applied sciences; Biological and medical sciences; Chemical treatment; Chemicals; Coloring Agents - chemistry; Conservation, protection and management of environment and wildlife; Contamination; Design of experiments; Dye wastewater; Environmental management; Exact sciences and technology; Experiment design; Experimental design; Fundamental and applied biological sciences. Psychology; General aspects; Heuristic; Hydrochloric acid; Hydrogen-Ion Concentration; Industrial pollution; Industrial Waste - analysis; Pilot plant; Pollution; Research methodology; Textile Industry; Turbidity; Wastewaters; Water Pollutants, Chemical - analysis; Water Pollutants, Chemical - chemistry; Water pollution; Water Purification - methods; Water treatment; Water treatment and pollution; Pilot plant; Dye wastewater; Experimental design; Chemical treatment; AHCC algorithm; Turbidity; Dyes; Algorithm; Environmental management; Operating conditions; Waste water; Optimum; Plant; Industrial waste water; pH; Waste water purification; Adaptation
• ISSN: 0301-4797; 1095-8630
• DOI: 10.1016/j.jenvman.2006.10.013

For a pilot-scale application, pH control in the treatment of highly contaminated dye industrial wastewater containing metallic compounds as the main pollutants has been investigated with a method using adaptive heuristic criticism control (AHCC). Subsequent experimentation on between 12 and 18
l of the wastewater was carried out using statistical experimental design methodology to evaluate the effects of three critical factors: slaked lime (calcium hydroxide, Ca(OH)
2) concentration, iron chloride (FeCl
3) concentration and wastewater volume. With these critical factors, the wastewater treatment process is modeled as an appropriate quadratic cost function of the turbidity of the clarified water. The model is optimized with Rosenbrock's method. Response surface topology of the wastewater treatment is given in terms of optimal concentrations of lime water and FeCl
3 and optimal wastewater volume at pH 11.