Treatment of modified starch wastewater with high sodium chloride (NaCl) concentration using an anaerobic hybrid reactor

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

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รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Fusuwankaya K., Chaiprasert P., Suraraksa B.

ผู้เผยแพร่: Taylor & Francis: STM, Behavioural Science and Public Health Titles

ปีที่เผยแพร่ (ค.ศ.): 2009

วารสาร: Desalination and Water Treatment (1944-3994)

Volume number: 4

Issue number: #

หน้าแรก: 224

หน้าสุดท้าย: 228

จำนวนหน้า: 5

นอก: 1944-3994

eISSN: 1944-3986

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954198187&doi=10.5004%2fdwt.2009.486&partnerID=40&md5=5021b9a52e8e473606277f5074d1fb4d

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

This work was designed to investigate the potential of an anaerobic hybrid reactor (AHR) in treating modified starch wastewater (MSW) containing high salt concentration. The AHR was started up by feeding native starch wastewater (NSW) until reaching a steady state at an organic loading rate of 4 kg COD/m3/d and hydraulic retention time of 3 d. After that the MSW, to which was added a NaCl concentration of 2.5, 5.0 and 7.5 g/l, was fed into the AHR. The result was that the AHR yielded a high efficiency in treating the SMSW containing 5.0 g/l of NaCl. After increasing the NaCl to 7.5 g/l, the total volatile acid (TVA) was increased from 1,070 mg/l to 2,620 mg/l, whereas the alkalinity decreased from 1,950 mg/l to 705 mg/l. The TVA/alkalinity ratio was increased from 0.5 to 3.7, whereas the pH was reduced to 4.45. The amount of attached biomass and suspended biomass in the AHR was reduced from 71.1 and 90.7 g/reactor to 67.4 and 60.4 g/reactor, respectively. More-over, the NaCl negatively affected the microbial activities inside the reactor, especially methanogenic activity. Contrarily, no inhibition was found when the 5.0 g/l of NaCl added. These results showed that the AHR was able to treat the modified starch wastewater containing 5.0 g/l of NaCl. ฉ 2009 Desalination Publications.

คำสำคัญ

Methanogens, Microbial activity, Modified starch waste-water