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Nitrogen and Phosphate Removal by Simultaneous Nitrification and Denitrification via Nitrite

Hongwei Rong

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Abstract

Nitrogen and phosphorus were removed simultaneously from synthetic wastewater by simultaneous nitrification and denitrification via nitrite by controlling sludge age in sequencing batch reactor (SBR). Results showed that when sludge age was optimal, removal efficiency of COD, NH4+-N, TN and TP were 93%, 99.6%, 84.58% and 99% respectively on condition that both COD and DO were optimal. The simultaneous nitrogen and phosphate removal is efficient by making sludge age maintain optimal in the reactor through draining mixture of activated sludge and wastewater.

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What this paper is about

Nitrogen and phosphorus were removed simultaneously from synthetic wastewater by simultaneous nitrification and denitrification via nitrite by controlling sludge age in sequencing batch reactor (SBR). Results showed that when sludge age was optimal, removal efficiency of COD, NH4+-N, TN and TP were 93%, 99.6%, 84.58% and 99% respectively on condition that both COD and DO were optimal. The simultaneous nitrogen and phosphate removal is efficient by making sludge age maintain optimal in the reactor through draining mixture of activated sludge and wastewater.

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Available abstract

Nitrogen and phosphorus were removed simultaneously from synthetic wastewater by simultaneous nitrification and denitrification via nitrite by controlling sludge age in sequencing batch reactor (SBR). Results showed that when sludge age was optimal, removal efficiency of COD, NH4+-N, TN and TP were 93%, 99.6%, 84.58% and 99% respectively on condition that both COD and DO were optimal. The simultaneous nitrogen and phosphate removal is efficient by making sludge age maintain optimal in the reactor through draining mixture of activated sludge and wastewater.

Key concepts: Nitrification, Denitrification, Sequencing batch reactor, Nitrite, Phosphate, Wastewater, Chemistry, Phosphorus

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