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https://doi.org/10.37358/Rev.Chim.1949

OSIM Nr. R102355
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Revista de Chimie (Rev. Chim.), Year 2016, Volume 67, Issue 5,





DANIELA ANGELA BUZOIANU, CASEN PANAITESCU, MIHAELA BOMBOS, MONICA EMANUELA STOICA
Study on Efficiency Increasing of Biological Stage
by Sequential Operating of Aeration Reactors

Abstract:

Classical method of biological treatment creates problems due to necessity of phosphorus and nitrogen removal from wastewater, as well as with reduction of chemical oxygen demand. Biological treatment by sequential treatment in a plant with four reactors leads to great flexibility in operation and increase the degree of purification compared to classical operation in a plant with two reactors. The performances of the process depends on the way of stages succession in the four reactors. Increasing the volume hourly space velocities of wastewater from 0,11 h--1 to 0,42 h -1 not diminish the performance of the biological treatment by sequential treatment. Correct distribution of the maximum load in the aeration reactors will lead to maximum degrees of purification highlighted by 90% for COD, 96% for BOD, 90% for nitrates and 95% for suspended solids. Keywords: sequential operation, aeration reactors, biological stage, wastewater


Issue: 2016, Volume 67, Issue 5
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