The Acidification of Protein-containing Wastewater in a Completely Stirred Tank Reactor
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Abstract
The protein-containing wastewater acid-forming efficiency in an acidogenic completely stirred tank reactor (CSTR) was investigated in this study. A synthetic wastewater used as an influent was represented the ice cream wastewater, the food supplements wastewater, and the cosmetic effluent with COD of about 2,000 mg/l. A 3-l CSTR operated continuously at hydraulic retention time (HRT) of 4 hr, organic loading rate (OLR) in the range of 13.24-13.92 kg COD/m3.d under ambient temperature and non-pH adjustment condition. The acidification efficiency and acid production rate of the cosmetic wastewater was 36.5% and 4.8 g COD/l.d respectively followed by the ice cream wastewater (30.2% and 3.9 g COD/l.d) and the food supplements effluent (10.8% and 1.4 g COD/l.d). Biogas production was suppressed. The operational conditions applied in this study are thus suitable for the acidification of protein-containing wastewater.
Article Details
วารสารวิศวกรรมฟาร์มและเทคโนโลยีควบคุมอัตโนมัติ (FEAT Journal) มีกําหนดออกเป็นราย 6 เดือน คือ มกราคม - มิถุนายน และกรกฎาคม - ธันวาคม ของทุกปี จัดพิมพ์โดยกลุ่มวิจัยวิศวกรรมฟาร์มและเทคโนโลยีควบคุมอัตโนมัติ คณะวิศวกรรมศาสตร์มหาวิทยาลัยขอนแก่น เพื่อเป็นการส่งเสริมและเผยแพร่ความรู้ ผลงานทางวิชาการ งานวิจัยทางด้านวิศวกรรมศาสตร์และเทคโนโลยีพร้อมทั้งยังจัดส่ง เผยแพร่ตามสถาบันการศึกษาต่างๆ ในประเทศด้วย บทความที่ตีพิมพ์ลงในวารสาร FEAT ทุกบทความนั้นจะต้องผ่านความเห็นชอบจากผู้ทรงคุณวุฒิในสาขาที่เกี่ยวข้องและสงวนสิทธิ์ ตาม พ.ร.บ. ลิขสิทธิ์ พ.ศ. 2535
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