TY - JOUR
T1 - Agricultural recycling of the by-product concentrate of livestock wastewater treatment plant processed with VSEP RO and bio-ceramic SBR
AU - Yoon, Y.
AU - Ok, Yong Sik
AU - Kim, D. Y.
AU - Kim, Jeong-Gyu
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2004
Y1 - 2004
N2 - One of the problems in a reverse osmosis process for livestock wastewater treatment is disposal of the by-product concentrate. The agricultural recycling of the concentrate is more cost saving than a further treatment. Application of the concentrate reduces the chemical fertilizer amendment. The agricultural recycling of the concentrate from the Kimhae livestock wastewater treatment plant, processed with the VSEP RO and bio-ceramic SBR, was studied. The concentrate includes non-biodegradable humic substance and residual inorganic ions (NH4+, NO3-, PO4 3-, K+, etc.). The contents of N, P and K were 1,650, 382 and 2,059 mg L-1, respectively. The total acidity of humic acids extracted from the concentrate was 5.17 cmol(+) g-1, composed of 2.38 cmol(+) g-1 of carboxylic group and 2.79 cmol(+) g-1 of phenolic hydroxyl group. Coliforms and E. coli were not detected in the concentrate. The yield of rice plant with the concentrate applied to it resulted in similar production to that with chemical fertilizer applied. The water extractable nitrate content of the concentrate-applied land did not exceed that of chemical fertilizer applied, at soil depths of 30 and 60 cm. The percolated amount of nitrate into the water table in arable land with the concentrate applied showed a similar level to that treated with the chemical fertilizer.
AB - One of the problems in a reverse osmosis process for livestock wastewater treatment is disposal of the by-product concentrate. The agricultural recycling of the concentrate is more cost saving than a further treatment. Application of the concentrate reduces the chemical fertilizer amendment. The agricultural recycling of the concentrate from the Kimhae livestock wastewater treatment plant, processed with the VSEP RO and bio-ceramic SBR, was studied. The concentrate includes non-biodegradable humic substance and residual inorganic ions (NH4+, NO3-, PO4 3-, K+, etc.). The contents of N, P and K were 1,650, 382 and 2,059 mg L-1, respectively. The total acidity of humic acids extracted from the concentrate was 5.17 cmol(+) g-1, composed of 2.38 cmol(+) g-1 of carboxylic group and 2.79 cmol(+) g-1 of phenolic hydroxyl group. Coliforms and E. coli were not detected in the concentrate. The yield of rice plant with the concentrate applied to it resulted in similar production to that with chemical fertilizer applied. The water extractable nitrate content of the concentrate-applied land did not exceed that of chemical fertilizer applied, at soil depths of 30 and 60 cm. The percolated amount of nitrate into the water table in arable land with the concentrate applied showed a similar level to that treated with the chemical fertilizer.
KW - Agricultural recycling
KW - Concentrate
KW - Odor
KW - Pathogens
KW - Piggery wastewater
KW - Reverse osmosis
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U2 - 10.2166/wst.2004.0781
DO - 10.2166/wst.2004.0781
M3 - Article
C2 - 15137451
AN - SCOPUS:2442442725
VL - 49
SP - 405
EP - 412
JO - Water Science and Technology
JF - Water Science and Technology
SN - 0273-1223
IS - 5-6
ER -