Packed cage rotating biological contactor system for treatment of cyanide wastewater

Bioresource Technology
Suntud Sirianuntapiboon, Chollada Chuamkaew

Abstract

The aim of this work was to study the efficiency of the packed cage rotating biological contactor (RBC) system with synthetic wastewater (SWW) containing 800 mg/l BOD(5) with various cyanide residue concentrations and hydraulic loading time. The results showed that cyanide had a negative effect to both the system's efficiency and bio-film quality. An increase in cyanide concentration led to a decrease in bio-film growth and the consequent reduction in the removal efficiency of the system. Also, the effluent suspended solids (SS) of the system was increased with increasing cyanide concentrations because the bio-film detached from the media due to the toxicity of the cyanide residue. The system showed the highest COD, BOD(5), TKN and cyanide removal efficiencies of 94.0 +/- 1.6%, 94.8 +/- 0.9%, 59.1 +/- 2.8% and 95.5 +/- 0.6%, respectively, with SWW containing 5 mg/l cyanide under HRT of 8 days, while they were only 88.8 +/- 0.7%, 89.5 +/- 0.5%, 40.3 +/- 1.1% and 93.60 +/- 0.09%, respectively, with SWW containing 40 mg/l cyanide. In addition, the effluent ammonia, nitrite and nitrate were increased with increases in cyanide concentration or loading. However, the system with SWW containing the highest cyanide concentration of 40 m...Continue Reading

References

Jan 1, 1990·Environmental Pollution·Y L ParuchuriP Kumaran

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Citations

Aug 21, 2008·Journal of Industrial Microbiology & Biotechnology·Hyojin DoSeokhwan Hwang
Dec 7, 2007·Journal of Hazardous Materials·Suntud SirianuntapiboonMethinee Rarunroeng
Aug 4, 2012·Bioresource Technology·Naresh K SharmaS Murty Bhallamudi
Jan 7, 2015·Environmental Technology·Halis SimsekAchintya N Bezbaruah
Jul 31, 2016·Carbohydrate Polymers·Sheriff AdewuyiFatai Oladipupo Oladoyinbo
Jul 1, 2017·3 Biotech·Siraporn PotivichayanonRattana Toensakes
Jan 1, 2015·3 Biotech·Virender KumarTek Chand Bhalla

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