Combined SHARON and ANAMMOX processes for ammoniacal nitrogen stabilisation in landfill bioreactors.
Combined SHARON and ANAMMOX processes for ammoniacal nitrogen stabilisation in landfill bioreactors.
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DOI：
10.1016/j.biortech.2017.10.077
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发表时间：
2018-02
影响因子：
11.4
通讯作者：
S. Sri Shalini;K. Joseph
中科院分区：
文献类型：
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作者：
S. Sri Shalini;K. Joseph
通过将Sharon(相对于亚硝酸盐进行高活性氨去除的单一反应器系统)和Anammox(厌氧氨氧化)等新工艺与低碳需求、曝气量和N2O排放的优势相结合，显著提高了固体废物和渗滤液中氨氮的稳定性。研究了在中试规模的垃圾填埋场生物反应器(LFBR)中建立Sharon-Anammox组合工艺。分子分析结果表明，好氧和厌氧氨氧化细菌(AOB和Anammox)在沙龙-厌氧氨氧化工艺中起着关键作用。在147 d的水力停留时间为1.2kgN/m~3/d的条件下，建立了SHARON-ANAMMOX工艺，总氮和氨氮的去除效率分别为84%和71%，而在控制水力停留时间为336kgNH4-N/m~3/d的水力停留时间为1.0kgNH_4-N/m~3/d的条件下，氨氮的去除效率为49%。氮素质量平衡表明，SHARON-ANAMMOX比对照LFBR具有更高的氮转化率(50.8%)和更低的固体废物中残留氮(7.7%)。
Stabilisation of ammoniacal nitrogen from solid waste and leachate significantly improved by combining novel processes like SHARON (single reactor system for high activity ammonia removal over nitrite) and ANAMMOX (anaerobic ammonium oxidation) with advantages of lower carbon requirements, aeration and N2O emissions. This paper deals with establishing combined SHARON-ANAMMOX processesin situpilot-scale landfill bioreactors (LFBR). Molecular analysis in LFBR with changes in nitrogen, hydrazine, hydroxylamine confirmed aerobic and anaerobic ammonium oxidising bacteria (AOB & ANAMMOX) as key players in SHARON-ANAMMOX processes.In situSHARON-ANAMMOX process was established in LFBR with total nitrogen and ammoniacal nitrogen removal efficiency of 84% and 71%, respectively at NLR of 1.2 kgN/m3/d in 147 d, compared to ammoniacal nitrogen removal of 49% at NLR of 1.0 kgNH4-N/m3/d in 336 d feasible in Control LFBR. Nitrogen massbalance demonstratedin situSHARON-ANAMMOX advantageous than control LFBR with higher nitrogen transformation to N2(50.8%) and lower residual nitrogen in solid waste (7.7%).