The application of partial nitritation and anammox processes (PN/A) to remove nitrogen can improve the energy efficiency wastewater treatment plants (WWTPs) as well diminish their operational costs. However, there are still several limitations that preventing widespread PN/A in urban WWTPs such as: (a) loss performance stability units operated at sludge line, when is thermally pretreated increa...

The microbial interactions between autotrophs and heterotrophs by the exchange of products in a partial nitritation/anammox (PN/A) bioreactor were evaluated with both experimental simulation analyses. Real-time quantitative PCR analysis showed that anammox bacteria (AMX) ammonium oxidizing (AOB) made up 56.59% 8.35% total bacteria, respectively, while identified as Chloroflexi also constituted ...

Abstract Nitrification–denitrification is an environmentally friendly and cost-effective way to treat landfill leachates. Special attention has been given the nitrification step, usually limiting one due its special sensitivity environmental factors. Here, effect of acclimatization nitrifying biomass two different intermediate leachates with salt concentrations, COD BOD 5 studied. Despite compl...

Urine is a valuable resource for nutrient recovery. Stabilization is, however, recommended to prevent urea hydrolysis and the associated risk ammonia volatilization, uncontrolled precipitation, malodor. This can be achieved by alkalinization subsequent biological conversion of into nitrate (nitrification) organics CO2. Yet, without pH control, extent nitrification limited as result insufficient...

Elemental sulfur-driven autotrophic denitrification (S0dAD) was applied in a packed-bed reactor to remove residual nitrogen from raw mature landfill leachate after partial nitritation and anaerobic ammonium oxidation (anammox) (PN/A) pretreatment. The performance stability of S0dAD were evaluated with different NOx? (nitrate nitrite) loadings hydraulic retention time (HRT) at 15–28 °C over an o...

Partial nitritation-anammox (PNA) permits energy effective nitrogen removal. Today PNA is used for treatment of concentrated and warm side streams at wastewater treatment plants, but not the more diluted and colder main stream. To implement PNA in the main stream, better knowledge about microbial communities at the typical environmental conditions is necessary. In order to investigate the respo...