The SHARON process in the treatment of landfill leachate.
The purpose of this paper was to study the partial nitrification of the nitrogen present in a landfill leachate applying the SHARON process in order to obtain a suitable effluent to the ANAMMOX process. As a first step, the SHARON reactor was fed anaerobically pre-treated leachate at an ammonium concentration of 2,000 mg N/L (1.1 kg N/m(3) d). In such conditions, the average ammonium and nitrite concentrations in the effluent were 775 mg N/L and 1,225 mg N/L, respectively. During this period the COD removal was very low since most of the biodegradable organic matter was removed in the anaerobic pre-treatment. Afterwards, the SHARON reactor was fed leachate without a previous treatment and the efficiency of the partial nitritation diminished. As well, the COD removal increased, achieving a percentage around 28%.
Vilar
A
A
Laboratory of Chemical Engineering, Faculty of Sciences, University of A Coruña, 15008 A Coruña, Spain.
Eiroa
M
M
Kennes
C
C
Veiga
M C
MC
D000693:Anaerobiosis; D019149:Bioreactors; D003188:Composite Resins; D006801:Humans; D008019:Life Style; D000644:Quaternary Ammonium Compounds; D012037:Refuse Disposal / Q000379:methods* / Q000592:standards; D014874:Water Pollutants, Chemical / Q000032:analysis*
D003188:Composite Resins; D000644:Quaternary Ammonium Compounds; D014874:Water Pollutants, Chemical