สืบค้นงานวิจัย
Domestic wastewater treatment using high rate anaerobic reactors
Thuy, Tran Thanh - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Domestic wastewater treatment using high rate anaerobic reactors
ผู้แต่ง / หัวหน้าโครงการ (EN): Thuy, Tran Thanh
บทคัดย่อ (EN): Anaerobic hybrid (AH) and anaerobic mixing (MX) reactors of 5.5 1 and an expanded granular sludge bed (EGSB) reactor of 6.5 1, respectively, were used to study the treatment of domestic wastewater. Each reactor was seeded with 10 gVSS11 of granular sludge.Domestic wastewater with 130 - 155 mgll of BODS (220 - 400 mgll of CODt) was continuously upflow fed to the reactors. Influent TKN and phosphorus were 20-50 and 4-7 mgll, respectively. Buffer capacity of the three reactors was controlled by adding bicarbonate in the amounts up to 0.2 gll. pH and TVAlAlkalinity inside the reactors were in the range of 6.5-7.5 and < 0.4, respectively. The AH reactor was fed with the increase of organic loading rate (OLR) from 0.16 to 3.5 gCOD1l.d. The removal CODd and methane composition at OLR 2-3.5 gCOD1l.d and HRT 4 h was 70-77% and 61%, respectively. The results indicated that minimum contact time for microorganisms (sludge and biofilm) and organic substances in the treatment efficiency of the AH reactor was 4 h. In the case of the MX reactor, it could load up to 1.5 gCOD1l.d at HRT of 5.7h, which gave CODd and CODt removal efficiencies of 54% and 46%, respectively. Methane composition in the MX reactor was 24%. In the EGSB reactor, OLR can increase from 0.16 to 5 gCOD1l.d by decreasing HRT from 33 to 2.8 h. The minimum contact time for granular sludge and organic substances was 2.8 h. The removal of CODd and methane composition at 0 ~ f o f 3-5 gCOD1l.d and HRT of 2.8 h were 64-68% and 5 1%, respectively. Total energy required for AH, MX and EGSB reactors was almost 226, 487 and 205 kWkg COD removal, respectively. Dispersion numbers in AH, MX and EGSB reactors were 0.1 1, 0.07 and 0.12, respectively. In addition, the mixing pattern in these three reactors closed to a plug flow pattern. Among three reactors, the highest CODd removal efficiency found in the AH reactor was due to the retaining biomass competence and the high value of specific methanogenicactivity (SMA). Contrary to this, the breaking of granules due to the improper mixing speed caused low efficiency in the MX reactor. In addition, the lowest energy requirement in terms of kWkg CODt removal was found in EGSB reactor which indicates that theEGSB reactor also is a good alternative reactor compared to the AH reactor for domestic wastewater treatment.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): http://dcms.thailis.or.th/dcms/dccheck.php?Int_code=54&RecId=7944&obj_id=22613
เผยแพร่โดย (EN): มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี
คำสำคัญ (EN): Wastewater treatment
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี
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Thuy, Tran Thanh. "Domestic wastewater treatment using high rate anaerobic reactors". ไม่ระบุหน่วยงาน. ม.ป.ป.

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Domestic wastewater treatment using high rate anaerobic reactors
Thuy, Tran Thanh
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี
ไม่ระบุวันที่เผยแพร่
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