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Activated Sludge Engineering Articles & Analysis
4 articles found
Readers of our Water Sustainability Blog searched for innovation in a year of water wake-up calls 2021 What a year. In the midst of the pandemic, we received many water wake-up calls, like images of Lake Meade’s “bathtub ring,” that show just how much its water level has dropped, and eerie views of Mexican towns emerging in depleted reservoirs for the first time since dam ...
Winery expansion has been growing fast over the past decade, and the high demand for fermented grapes has put a toll on winery wastewater treatment. Their treatment plants already have trouble keeping a stable operation as their load variability changes so often, depending on production stage. The plant’s bacteria are either in feast or famine mode, which causes upsets that lead to sludge ...
A hybrid activated sludge/biofilm process was investigated for wastewater treatment in a cold climate region. This process, which contains both suspended biomass and biofilm, usually referred as IFAS process, is created by introducing plastic elements as biofilm carrier media into a conventional activated sludge reactor. In the ...
A paper mill producing 500,000 ton of graphic paper annually has an onsite wastewater treatment plant that treats 7,240,000 m3 of wastewater per year, mechanically first, then biologically and at last by ozonation. Increased paper production capacity led to higher COD load in the mill effluent while production of higher proportions of brighter products gave worse biodegradability. Therefore the ...