ẢNH HƯỞNG CỦA CÁC THÔNG SỐ VẬN HÀNH ĐỐI VỚI VIỆC LOẠI BỎ CARBAMAZEPINE VÀ CÁC CHẤT DINH DƯỠNG TRONG HỆ THỐNG MÀNG SINH HỌC CERAMIC

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Thông tin xuất bản: Tạp chí Khoa học Đại học Công Thương (Tên cũ: Tạp chí Khoa học Công nghệ và Thực phẩm), 2024

Mô tả vật lý: tr.39

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ID: 479853

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Dược phẩm và các sản phẩm chăm sóc cá nhân đã và đang gây ra những lo ngại đáng kể do được sử dụng rộng rãi, có mặt trong môi trường nước và những tác động tiềm ẩn của chúng đối với động vật hoang dã và con người. Carbamazepine là dư lượng dược phẩm được phát hiện thường xuyên nhất trong số các sản phẩm dược phẩm và chăm sóc cá nhân. Tuy nhiên, hiệu quả loại bỏ carbamazepine thấp trong các nhà máy xử lý nước thải là do khả năng chống phân hủy sinh học của nó ở nồng độ thấp. Hệ thống sinh học màng (membrane bioreactor - MBR) gần đây đã thu hút sự chú ý trong xử lý nước thải ở các thành phố và khu công nghiệp vì tính hiệu quả trong việc tách các chất ô nhiễm và khả năng chịu tải cao. Trong nghiên cứu này, các tác động chính và tác động tương tác của ba thông số vận hành, bao gồm thời gian lưu nước – HRT (12–24 giờ), nồng độ oxy hòa tan – DO (1,5–5,5 mg/L) và thời gian lưu bùn – SRT (5–15 ngày), trong việc loại bỏ carbamazepine, nhu cầu oxy hóa học (COD), nitơ amonia và phốt pho sử dụng màng gốm đã được thực hiện bằng cách áp dụng thiết kế thí nghiệm yếu tố đủ (full factorial design – FFD) hai cấp độ. Nồng độ oxy hòa tan, thời gian lưu nước và thời gian lưu bùn tối ưu lần lượt là 1,7 mg/L, 24 giờ và 5 ngày. Kết quả nghiên cứu cho thấy khả năng ứng dụng của MBR trong xử lý nước thải có tải lượng carbamazepine cao, cùng với sự hiệu quả trong việc loại bỏ các chất dinh dưỡng.Pharmaceuticals and personal care products have raised significant concerns due to their widespread use and their potential impacts on wildlife and humans. Carbamazepine is the most frequently detected pharmaceutical residue among pharmaceutical and personal care products. However, the low removal efficiency of carbamazepine in wastewater treatment plants is due to its resistance to biodegradation at low concentrations. Membrane bioreactor (MBR) systems have recently attracted attention in municipal and industrial wastewater treatment because of their efficiency in separating pollutants. In this study, the main effects and interactions of three operating parameters, including hydraulic retention time - HRT (12–24 hours), dissolved oxygen concentration - DO (1.5–5.5 mg/L) and sludge retention time - SRT (5–15 days), in the removal of carbamazepine, chemical oxygen demand (COD), ammonia nitrogen and phosphorus using ceramic membranes was investigated by applying using a two-level full factorial design (FFD). The optimum dissolved oxygen concentration, hydraulic retention time and sludge retention time were 1.7 mg/L, 24 hours and 5 days, respectively. Research results show the applicability of MBR in wastewater treatment with high carbamazepine loading, along with the efficiency in removing nutrients.

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