Simulated Acid Azo Dye Wastewater Treatment Using Suspended Grow Th Configured Sequencing Batch Reactor (Sbr) Under Anoxic-Aerobic-Anoxic Microenvironment

Abstract

Venkata Mohan et al: Simulated acid azo dye wastewater treatment using suspended growth configured sequencing batch reactor - Abstract. Studies on the treatment of simulated acid metal complex azo dye (C.I.Acid black 210) wastewater was carried out in anoxic-aerobic-anoxic microenvironment using a periodically operated sequencing batch reactor (SBR) with suspended growth configuration at two organic loading rates (0.56 Kg COD/cum-day and 0.75 Kg COD/cum-day). The experimental data revealed the effective performance of the SBR system in the process of azo dye minerilazation, which may be attributed to the prevailing anoxic microenvironment present during the cycle operation. The reactor showed rapid startup (within 22 days) and stabilization (within 6 days after loading) compared to conventional continuously operated systems. Organic loading (shock loads) rates have shown relatively less effect on the performance.

Effect of Environmental and Operational Parameters on Sequential Batch Reactor Systems in Dye Degradation

“…Ong, Ho, Wong, & Pakri, 2017). Textile wastewater resulting Effect of environmental and operational parameters on sequential batch reactor systems in dye degradation 4 wastewater treatment as most of the colored dye substances with large molecular mass are immune to biodegradation (Al-Amrani, Lim, Seng, & Ngah, 2014; S. V. Mohan, Rao, & Sarma, 2009). Strategies other than the conventional ones employed for dye containing wastewater degradation for possible reuse categorized into physicochemical, biological and combined systems have been reviewed in recent times (Khosravi, Karimi, Ebrahimi, & Fallah, 2020).…”

“…For the combined shock load, two (2 ) or three (3) of the above state shocks are concurrently applied to the reactor, with varying intensity levels at given cycles, and the reactor's efficacy in wastewater treatment is then assessed (Mizzouri & Shaaban, 2013). Organic loading of 0.56 and 0.75 Kg COD/cum-day rates have exhibited less impact on the treatment of Acid black 210, as the reactor effectiveness was not restrained at the examined loading rates (S. V. Mohan et al, 2009).…”

Biotreatment of Azo Dyeing Wastewater Using a Modified Anaerobic-Anoxic-Aerobic Reactor System

“…Biological treatment such as active sludge process and anaerobic technology has been widely used in dye wastewater treatment due to their low cost and environmental friendship [7]. Though combination of anaerobic and aerobic treatment has been proved to be effective for dye wastewater treatment [6,[8][9][10][11], anoxic treatment could be also used in wastewater treatment due to its not strict conditions [12][13][14].…”