![]() In contrast to the conventional approach of maximising the length-to-width ratio, the proposed design changes are aimed at addressing and mitigating adverse hydrodynamic structures, which have historically led to poor hydraulic efficiency in many existing contact tanks. The method is applied to study the effects of inlet and compartment design on contact tank performance, with special emphasis on turbulent mixing and minimisation of internal recirculation and short-circuiting. The methodology departs from the traditional performance assessment of contact tanks via hydraulic efficiency indicators, as it simulates directly transport and decay of the disinfectant, inactivation of pathogens and accumulation of by-products. This article is published with open access at Ībstract In this study three-dimensional numerical models were refined to predict reactive processes in disinfection contact tanks (CTs). Received: 30 March 2015 /Accepted: 2 February 2016 ![]() Contact Tank Design Impact on Process Performance
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