000 04208nas a2200469 a 4500
005 20260817171418.0
008 210704s2021 th u m rtt 000 a eng d
035 _a.b12372031
099 9 _aAIT Thesis no.EV-21-18
100 0 _aThanawat Udombua
245 1 0 _aBiochar-based constructed wetland for treating solar septic tank effluent
260 _aPathum Thani, Thailand :
_bAsian Institute of Technology,
_c2021
300 _a70 leaves :
_bill.
490 1 _aThesis ;
_vno. EV-21-18
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management
502 _aThesis (M. Sc.) - Asian Institute of Technology, 2021
520 _aConstructed wetlands (CWs) were considered to treat effluent water from the solar septic tank afterward. Lateritic soil is suitable to select as the main material of media. However, the efficiency of lateritic soil to adsorb N and P in SST effluent still is low. Biochar has been used for soil remediations traditionally which it has benefits for plant uptake of nutrient (N and P). The rubber wood sawdust has the highest carbon. For effective biochar, the biomass was activated by 2.3M MgCl2.6H2O before a pyrolysis. Therefore, biochar can be used for combining lateritic soil to apply in the soil-based constructed wetlandsto be a Biochar-Based Constructed Wetland (BBCW). The results of media efficiency showed that yield percentage of biochar NB-300, MgB-300, NB-500, MgB-500, NB-600, and MgB-600 are 58.5, 58.36, 25.4, 40.42, 23.96, and 33.9, respectively. Biochar pyrolysis at low temperature was weight more than high temperature, and the pyrolysis at 500 o C and 600 o C, the MgBs was weight more than the NBs. The NH3-N adsorption of MgB-500 were 5.32 mg/g, which was maximum compared with other conditions. The MgB-600 and MgB-500 were the highest adsorption of TP arrived at 0.78 mg/g and 0.75 mg/g, respectively. Therefore, the MgB-500 was employed to used or applied into a constructed wetland. In addition, MgB-500 can highly adsorb NH3-N and TP for 24h and 8h, respectively from a time function experiment. The results of investigation of the BBCW show that concentrations of COD, TSS of the BBCW can remove that more than 80% and 90%, respectively. The BBCW were nutrient (N and P) removal efficiencies highly more than SBUP which was only soil as media layer. The BBCW was removal efficiency of TN were 64.14%, 65.08%, and 75.90% for HRT 12h, 24h, and 36h, respectively, which were TN removal efficiency more than BBUP which was unplanted. For design criteria, an appreciate criteria to design the BBCW to remove pollutants in SST effluent was HLR 0.09 m3 /m2 .day.
650 0 _aBiochar
_xEnvironmental aspects
650 0 _aConstructed wetlands
650 0 _aSeptic tanks
700 0 _aThammarat Koottatep,
_eChairperson
700 1 _aXue, Wenchao,
_eExamination committee
700 0 _aTatchai Pussayanavin,
_eExamination committee
710 2 _aRoyal Thai Government Fellowship,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-21-18
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B13491
907 _a.b12372031
_bmnait
_cm
902 _a240418
998 _b0
_c210704
_dm
_ea
_fm
_g0
945 _lmnait
945 _lmnait
945 _lmnarc
945 _lmnarc
942 _c40
942 _c67
942 _c20
909 _aBarcode : 30050120885883
_bCREATED : 2021-07-14
_cRECORD # : i13349703
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
909 _aBarcode : -
_bCREATED : 2021-07-14
_cRECORD # : i13349715
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
909 _aBarcode : 30050121021967
_bCREATED : 2023-12-01
_cRECORD # : i13424804
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
909 _aBarcode : 30050121021959
_bCREATED : 2023-12-01
_cRECORD # : i13424816
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
999 _c12114
_d12114