Hydraulic Regime Study for a Bench-Scale Electrochemical Arsenic Remediation (ECAR) Reactor Utilizing Methylene Blue as Tracer
Keywords:
Electrochemical arsenic remediation (ECAR), continuous flow, pulse input, tracer study, residence time distribution, mean residence time, continuous stirred tank reactorAbstract
Long-term exposure to low level arsenic is becoming a very serious health problem now-a-days. Electrochemical
Arsenic Remediation, (ECAR) is a low-cost, low-maintenance and robust technology that efficiently removes arsenic from the
groundwater. Considering the targeted demand of providing arsenic-safe water, to a large section of arsenic-affected
population as the community-level drinking water, the development of continuous-scale ECAR unit has been in progress.
Initially a laboratory scale (35L) continuous flow type ECAR reactor has been fabricated whose hydraulic characteristics is
being investigated in the present study with methylene blue dye as the tracer. This reactor has been characterized using the
residence time distribution (RTD) data that allows identifying the flow pattern and its deviations. The cumulative distribution
function curves are being plotted with the help of RTD data, which exhibit the behavior of the reactor similar to that of a
non-ideal CSTR.
