TY - JOUR
T1 - Potential use of mangroves as constructed wetland for municipal sewage treatment in Futian, Shenzhen, China
AU - Yang, Q.
AU - Tam, N. F.Y.
AU - Wong, Y. S.
AU - Luan, T. G.
AU - Su, W. S.
AU - Lan, C. Y.
AU - Shin, P. K.S.
AU - Cheung, S. G.
PY - 2008
Y1 - 2008
N2 - A pilot-scale mangrove wetland was constructed in Futian, Shenzhen for municipal sewage treatment. Three identical belts (length: 33 m, width: 3 m, depth: 0.5 m) were filled with stone (bottom), gravel and mangrove sand (surface). Seedlings of two native mangrove species (Kandelia candel, Aegiceras corniculatum) and one exotic species (Sonneratia caseolaris) were transplanted to the belts with one species for each belt. The hydraulic loading was 5 m3 d-1 and hydraulic retention time 3 d. High levels of removal of COD, BOD5, TN, TP and NH3-N were obtained. The treatment efficiency of S. caseolaris and A. corniculatum was higher than that of K. candel. Faster plant growth was obtained for S. caseolaris. The substrate in the S. caseolaris belt also showed higher enzyme activities including dehydrogenase, cellulase, phosphatase, urease and β-glucosidase. The removal rates of organic matter and nutrients were positively correlated with plant growth. The results indicated that mangroves could be used in a constructed wetland for municipal sewage treatment, providing post-treatment to remove coliforms was also included.
AB - A pilot-scale mangrove wetland was constructed in Futian, Shenzhen for municipal sewage treatment. Three identical belts (length: 33 m, width: 3 m, depth: 0.5 m) were filled with stone (bottom), gravel and mangrove sand (surface). Seedlings of two native mangrove species (Kandelia candel, Aegiceras corniculatum) and one exotic species (Sonneratia caseolaris) were transplanted to the belts with one species for each belt. The hydraulic loading was 5 m3 d-1 and hydraulic retention time 3 d. High levels of removal of COD, BOD5, TN, TP and NH3-N were obtained. The treatment efficiency of S. caseolaris and A. corniculatum was higher than that of K. candel. Faster plant growth was obtained for S. caseolaris. The substrate in the S. caseolaris belt also showed higher enzyme activities including dehydrogenase, cellulase, phosphatase, urease and β-glucosidase. The removal rates of organic matter and nutrients were positively correlated with plant growth. The results indicated that mangroves could be used in a constructed wetland for municipal sewage treatment, providing post-treatment to remove coliforms was also included.
KW - Constructed wetland
KW - Mangrove
KW - Nutrients removal
KW - Substrate enzyme
UR - http://www.scopus.com/inward/record.url?scp=45049083691&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2008.01.037
DO - 10.1016/j.marpolbul.2008.01.037
M3 - Article
C2 - 18342338
AN - SCOPUS:45049083691
SN - 0025-326X
VL - 57
SP - 735
EP - 743
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
IS - 6-12
ER -