This paper evaluates constructed wetlands and sand filter technologies applied as onsite post-treatment of anaerobic effluent, under environmental conditions of Southern Brazil. Three different onsite systems were evaluated, as follow: onsite system 1 (septic tank – ST followed by horizontal flow constructed wetlands – HFCW) with five years operation; onsite system 2 (ST followed by sand filter – SF) with three years operation and onsite system 3 (anaerobic pond – AP followed by vertical flow constructed wetland – VFCW) with one year operation. HFCW shows an average potential removal of 82, 84, 16, 50 and 90% of chemical oxygen demand (COD), biochemical oxygen demand (BOD), NH4+-N, PO43−-P and SS, respectively. Clogging phenomena occurred in the HFCW after three years operations with an average of 11 gSS m−2 d−1 loading rate applied. SF shows an average potential removal of 83, 88, 73, 76 and 88% of COD, BOD, NH4+-N, PO43−-P and SS, respectively. VFCH shows an average potential removal of 72, 80, and 71% of COD, NH4+-N, and SS, respectively, and also a very good nitrification (25 mgNO3−-N L−1 in the treated effluent) considering the high average COD loading rate (41 gCOD m−2 d−1) and average SS loading rate (15 gSS m−2 d−1) applied.
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Research Article|
September 01 2012
Constructed wetlands and sand filter applied as onsite post-treatment of anaerobic effluent
P. H. Sezerino;
aDepartment of Sanitary and Environmental Engineering, Federal University of Santa Catarina – UFSC. Address: Depto Engenharia Sanitária e Ambiental, Campus Universitário, Trindade, Florianópolis, SC, CEP: 88049–970, Brazil. E-mail: [email protected]; [email protected]
E-mail: [email protected]
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A. P. Bento;
A. P. Bento
bDepartment of Agronomical and Environmental Sciences, Federal University of Santa Maria – UFSM, Campus Frederico Westphalen. Address: Linha 7 de Setembro, BR 386, Km 40, Frederico Westphalen, RS, CEP: 98400–000, Brazil. E-mail: [email protected]; [email protected]
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S. T. Decezaro;
S. T. Decezaro
bDepartment of Agronomical and Environmental Sciences, Federal University of Santa Maria – UFSM, Campus Frederico Westphalen. Address: Linha 7 de Setembro, BR 386, Km 40, Frederico Westphalen, RS, CEP: 98400–000, Brazil. E-mail: [email protected]; [email protected]
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E. Carissimi;
E. Carissimi
cDepartment of Sanitary and Environmental Engineering, Federal University of Santa Maria – UFSM. Address: Roraima ave., 1000, Room 540, Bldg 10, Santa Maria, RS, CEP: 97105–180, Brazil. E-mail: [email protected]
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L. S. Philippi
L. S. Philippi
aDepartment of Sanitary and Environmental Engineering, Federal University of Santa Catarina – UFSC. Address: Depto Engenharia Sanitária e Ambiental, Campus Universitário, Trindade, Florianópolis, SC, CEP: 88049–970, Brazil. E-mail: [email protected]; [email protected]
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Water Practice and Technology (2012) 7 (3): wpt2012047.
Citation
P. H. Sezerino, A. P. Bento, S. T. Decezaro, E. Carissimi, L. S. Philippi; Constructed wetlands and sand filter applied as onsite post-treatment of anaerobic effluent. Water Practice and Technology 1 September 2012; 7 (3): wpt2012047. doi: https://doi.org/10.2166/wpt.2012.047
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