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Application of H2O2 to optimize ammonium removal from domestic wastewater
•The removal of biogenic compounds from wastewater.•The lab-scale investigations of the wastewater treatment plant model.•Application of hydrogen peroxide (H2O2) to remove ammonium nitrogen.•Efficiency of ammonium nitrogen and BOD5 removal from domestic wastewater. The paper presents the results of...
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Published in: | Separation and purification technology 2017-02, Vol.173, p.357-363 |
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Main Authors: | , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | •The removal of biogenic compounds from wastewater.•The lab-scale investigations of the wastewater treatment plant model.•Application of hydrogen peroxide (H2O2) to remove ammonium nitrogen.•Efficiency of ammonium nitrogen and BOD5 removal from domestic wastewater.
The paper presents the results of application of hydrogen peroxide (H2O2) for the optimization of the effects of ammonia nitrogen removal from domestic wastewater. The investigations were carried out at a model wastewater treatment plant consisting of a preliminary sedimentation tank and a sand filter with a horizontal flow of wastewater at a constant hydraulic load of 1.44 L/day. The efficiency of ammonia nitrogen removal was analyzed for different wastewater oxygenation levels: 0–10%, 10–20%, 20–30%, 30–40% and 40–50%, maintained by controlled application of a 0.1% H2O2 solution. It was demonstrated that the gradual increase in oxygen concentration in treated wastewater due to H2O2 dosing resulted in an increase in ammonia nitrogen removal from 39.0 to 81.2%. The best removal efficiency was obtained when the oxygenation level was in the range of 30–40%. It was also shown that application of hydrogen peroxide resulted in an effective removal of biochemical oxygen demand (BOD5). The highest BOD5 removal efficiency (94.3%) was obtained at the oxygenation level of 30–40%. The results indicate that oxygenation of wastewater with hydrogen peroxide can be applied for the optimization of the nitrification process in wastewater treatment plants. |
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ISSN: | 1383-5866 1873-3794 |
DOI: | 10.1016/j.seppur.2016.08.047 |