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Upflow Biological Aerated Filters for the Treatment of Flushed Swine Manure by P.W Westerman; J.R Bicudo; A Kantardjieff is a Engineering article available to read on EtoBox.

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A pilot plant with capacity to treat up to 8 m 3 /day of supernate from settled ̄ushed swine wastes was monitored for 12 months. The main system is composed of two up ̄ow aerated bio®lters connected in series. The aerated bio®lters, operated under warm weather conditions (average temperature of 27°C), were able to remove about 88% of biochemical oxygen demand (BOD), 75% of chemical oxygen demand (COD), and 82% of total suspended solids (SS) with loading of 5.7 kg COD/m 3 /day of bio®lter media. The total Kjeldahl nitrogen (TKN), total ammonia nitrogen (NH 3 -N), and total nitrogen (Total-N) reductions averaged 84%, 94% and 61%, respectively, during warm weather, with a signi®cant portion of the NH 3 -N being converted to nitrite plus nitrate nitrogen (NO 2 NO 3 -N). At higher organic loading (over 9 kg COD/m 3 /day) during September, the bio®lters had only slightly lower percentage removal rates. Operation at lower temperatures (average of 10°C) resulted in lower performances. The COD, TKN, NH 3 -N, and Total-N removal averaged 56%, 49%, 52%, and 29%, respectively, in December through March. The COD mass removal rate was linear with loading rate over the range of approximately 2±1

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Author

P.W Westerman; J.R Bicudo; A Kantardjieff

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0960-8524)

Published

2000

Language

EN

Field

Engineering (Physical Sciences)