Lagoons treating waste water or storm water eventually build up organic solids that reduce hydraulic retention time, periodically washout solids in the effluent, and cause odors from H2S production. The primary quick way to remove solids is to mechanically dredge, dewater and landfill these solids. However, this is a big ticket event that many facilities do not have the budget to undertake. Over the years numerous additives and technologies have been proposed to enable microbes to break down organic sludge into carbon dioxide, water, and methane. None has proven particularly effective and dredging has remained the primary way to deal with sludge.
I have been monitoring new technologies for "biodredging" or biological sludge decomposition for years and evaluated numerous new technologies. To be successful, biological dredging requires the following:
Erik Rumbaugh has been involved in biological waste treatment for over 20 years. He has worked with industrial and municipal wastewater facilities to ensure optimal performance of their treatment systems. He is a founder of Aster Bio (www.asterbio.com) specializing in biological waste treatment.
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