Nitrogen removal from landfill leachate via ex situ nitrification and sequential in situ denitrification

Zhong, Qing; Li, Daping; Tao, Yong; Wang, Xiaomei; He, Xiaohong; Zhang, Jie; Zhang, Jinlian; Guo, Weiqiang; Wang, Lan

doi:10.1016/j.wasman.2008.10.014

Cited by 44 publications

(25 citation statements)

References 24 publications

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“…35, 8.14e8.37, and 6.93e8.26 respectively. The present pH figures agree with those in previous studies (Zhong et al, 2009;Salem et al, 2008;Bagchi, 1990). A lower pH range of 6.8e7.5 was recorded by Jokela et al (2002).…”

Section: Phsupporting

confidence: 94%

“…The COD values recorded by Jokela et al (2002) agree with the present COD values. Greater COD values were reported by other researchers (Zhong et al, 2009;Ziyang et al, 2009;Salem et al, 2008;Canziani et al, 2006;Weiner and Matthews, 2003;Rushbrook and Pugh, 1999). This difference in COD values may be due to: landfill design, solid waste composition, climate conditions, site characteristics, and landfill age (Christensen et al, 2001).…”

Section: Codmentioning

confidence: 56%

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Leachate characterization in semi-aerobic and anaerobic sanitary landfills: A comparative study

Aziz

Yusoff

et al. 2010

Journal of Environmental Management

261

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Section: Phsupporting

confidence: 94%

Section: Codmentioning

confidence: 56%

Leachate characterization in semi-aerobic and anaerobic sanitary landfills: A comparative study

Aziz

Yusoff

et al. 2010

Journal of Environmental Management

261

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“…The results are consisten with those published by previous authors Palaniandy et al, 2010;Zhong et al, 2009). Higher pH values of 8.3-9.10 were recorded from the stabilized leachate of semi-aerobic landfill .…”

Section: Phsupporting

confidence: 90%

Characterization of Leachate from Kuala Sepetang and Kulim Landfills: A Comparative Study

Zainol¹,

Aziz²,

Yusoff³

2012

EER

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The general characteristics of Kuala Sepetang Landfill Site (KSLS) and Kulim Landfill Site (KLS) in the northern part of Malaysia were investigated. The average values of the parameters for leachate at KSLS and KLS, such as pH (8.05 and 7.59), EC (11.9 and 2.92 mS/cm), ORP (-33.02 and +17.8 On the other hand, parameters such as pH, copper, iron, manganese, nickel, and zinc remained within the allowable limits. The measured leachate would need an appropriate treatment strategy to reduce the pollutants to a satisfactory level prior to discharge into receiving system.

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“…The value of colour was calculated as 3800Pt.Co which agrees well with the average value of 3869Pt.Co reported by Ghafari et al (2010). The value of pH recorded represents a typical mature leachate as also reported by others (Salem et al 2008;Zhong et al 2009). …”

Section: Characteristics Of Leachatesupporting

confidence: 80%

Potential of KMnO4 and H2O2 in treating semi-aerobic landfill leachate

et al. 2014

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Treatment of recalcitrant landfill leachate was carried out using hydrogen peroxide (H 2 O 2 ) and potassium permanganate (KMnO 4 ). The treatment performance was reported in terms of colour, chemical oxygen demand (COD) and ammoniacal nitrogen (NH 4 -N). The effect of oxidant dosages and pH was determined and optimum conditions were determined considering the removal of parameters of interest. The optimum dosage of both oxidants was similar in terms of COD removal; however, H 2 O 2 gave better removal (42 %) and similar results were obtained for NH 4 -N (24 %). KMnO 4 proved better in terms of colour with a reduction of 74 % compared to 43 % by hydrogen peroxide at pH 7. Acidic conditions (pH 2-5) proved conducive towards the removal of all parameters with the exception of COD removal by KMnO 4 that exhibited a low removal at pH 5 and increased with increasing pH. The COD reduction at pH 3 was *38 % for KMnO 4 and H 2 O 2 , whereas the reduction in NH 4 -N was 22 and 28 % for KMnO 4 and H 2 O 2 , respectively. The COD and NH 4 -N removal performance of H 2 O 2 was better compared with KMnO 4 ; however, consistently higher colour removal was obtained for KMnO 4 .

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Nitrogen removal from landfill leachate via ex situ nitrification and sequential in situ denitrification

Cited by 44 publications

References 24 publications

Leachate characterization in semi-aerobic and anaerobic sanitary landfills: A comparative study

Leachate characterization in semi-aerobic and anaerobic sanitary landfills: A comparative study

Characterization of Leachate from Kuala Sepetang and Kulim Landfills: A Comparative Study

Potential of KMnO4 and H2O2 in treating semi-aerobic landfill leachate

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