tailieunhanh - Mối quan hệ giữa tải trọng với năng suất và hiệu suất xử lý COD của hai kĩ thuật xử lý yếm khí nước thải giàu cặn hữu cơ

Bài viết đánh giá mối quan hệ giữa tải trọng với năng suất và hiệu suất xử lý COD đối với công nghệ yếm khí cao tải bằng kĩ thuật tuần hoàn nội (IC) và tuần hoàn nội cải tiến (MIC) qui mô phòng thí nghiệm áp dụng xử lý nước thải chăn nuôi lợn. | VNU Journal of Science: Earth and Environmental Sciences, Vol. 35, No. 1 (2019) 21-26 Original article The Dependence of Removal Rate and Efficiency on COD Loading Rate in Two Anaerobic Systems Treating High Organic Suspended Wastewater Nguyen Truong Quan1,*, Vo Thi Thanh Tam1, Cao The Ha1, Le Van Chieu2, Tran Manh Hai3 1 Research Center for Environmental Technology and Sustainable Development (CETASD), VNU University of Science, 334 Nguyen Trai, Ha Noi, Vietnam 2 VNU Project Management Department, 144 Xuan Thuy, Cau Giay, Hanoi, Vietnam 3 Institute of Environmental Technology, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Hanoi, Vietnam Received 20 March 2018 Revised 09 March 2019; Accepted 13 March 2019 Abstract: The dependence of removal rate and efficiency on COD loading rate in two anaerobic systems using Internal Circulation (IC) and Modified Internal Circulation (MIC) models was evaluated for treatment of piggery waste in this study. Two systems were operated at the similar COD loading rate and retention times at room temperature when using anaerobic slugde concentration of gVMLSS/l. Generally, both IC and MIC achieved the similar performances regarding total COD removal rate are in the range of - kgCOD/m3/day with influent COD loading rate of - kg/m3/day; soluble COD removal rate are in the range of - kgCOD/m3/day with influent soluble COD of - 7 kgCO/m3/day. Both IC and MIC showed the similar performance regarding total and soluble COD removal efficiencies, which are in the range of 69 - 71% and 65%, respectively. However, MIC is more advantaged in the aspects of system manufacturing and operation. Keywords: Loading rate, removal capacity, internal circulation, anaerobic. __ Corresponding author. E-mail address: nguyentruongquan@ 21 VNU Journal of Science: Earth and Environmental Sciences, Vol. 35, No. 1 (2019) 21-26 Mối .