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Removal of ammonium ions from digested sludge fugate by using natural zeolite
Journal of Environmental Engineering and Landscape Management ( IF 1.0 ) Pub Date : 2016-08-19 , DOI: 10.3846/16486897.2016.1172075
Aušra MAŽEIKIENĖ 1 , Marina VALENTUKEVIčIENĖ 1
Affiliation  

Wastewater treatment loadings with total nitrogen can increased by introducing fugate that is saturated with ammonium ions, generated when dewatering wastewater treatment sludge. In this article the possibility to reduce the concentration of ammonium ions in the fugate by the use of natural zeolite (Transcarpatian clinoptilolite) has been analysed. Lab-scale experiments were carried out with different particle sizes zeolite: 0.8–1.6 mm, 1.6–2.5 mm and 2.5–3.2 mm. At the first stage of the experiments, zeolite particles were mixed with fugate and left to settle until a 99% efficiency of ammonium ion removal was achieved. At the second stage, ammonium ions were removed from the fugate by filtering this liquid through zeolite where the 70–92% efficiency was achieved. Zeolite saturated with ammonium ions possibly can be used in agriculture as nitrogenous fertilizers. Obtained fertilizer grade of zeolite saturated with fugate can also be produced from the high ammonium nitrogen concentration side-streams separated from wastewater flow from sludge digestion processes.



中文翻译:

使用天然沸石去除消化污泥中的铵离子

通过引入在污水处理污泥脱水时会产生的铵离子饱和的熏蒸剂,可以增加总氮的污水处理负荷。在本文中,已经分析了通过使用天然沸石(Transcarpatian斜发沸石)降低烟熏气中铵离子浓度的可能性。实验室规模的实验是使用0.8-1.6毫米,1.6-2.5毫米和2.5-3.2毫米的不同粒径的沸石进行的。在实验的第一阶段,将沸石颗粒与fugate混合并静置直至达到99%的铵离子去除效率。在第二阶段,通过将沸石中的液体过滤掉,从而从铵盐中去除了铵离子,达到了70-92%的效率。铵离子饱和的沸石可能可以在农业中用作含氮肥料。氨水浓度高的侧流与污泥消化过程中产生的废水流分离,也可以得到饱和的富达沸石的肥料等级。

更新日期:2016-08-19
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