BƯỚC ĐẦU ĐÁNH GIÁ TẢI LƯỢNG Ô NHIỄM TỪ NƯỚC THẢI SINH HOẠT VÀ ỨNG DỤNG CHẾ PHẨM VI SINH ĐỂ XỬ LÝ CHẤT HỮU CƠ TRONG NƯỚC SÔNG TÔ LỊCH

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Tác giả: Minh Nhật Dương, Thị Trang Hoàng, Minh Loan Lưu, Lan Anh Nguyễn, Thanh Huyền Nguyễn, Thị Thu Hà Phạm, Văn Trọng Vũ

Ngôn ngữ: vie

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Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2022

Mô tả vật lý: tr.182-190

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ID: 332252

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Sông Tô Lịch nằm giữa Thủ đô Hà Nội - trung tâm văn hóa chính trị của cả nước nhưng vẫn bị ô nhiễm nghiêm trọng. Mặc dù nhận được không ít sự quan tâm, đầu tư của các cấp, các ngành, có rất nhiều dự án trong và ngoài nước được triển khai, nhưng đến nay kết quả vẫn chưa đạt như mong muốn. Để đóng góp vào việc làm giảm ô nhiễm nước sông, chúng tôi tiến hành nghiên cứu xử lý nước sông Tô Lịch bằng chế phẩm sinh học Sagi Bio 2. Việc sử dụng chế phẩm sinh học sẽ hạn chế các tác động đến con người và môi trường so với các biện pháp xử lý hóa học thông thường. Nghiên cứu đã thực hiện nhiều lần lấy mẫu thực tế và xử lý quy mô phòng thí nghiệm. Kết quả phân tích cho thấy nước sông Tô Lịch đã và đang bị ô nhiễm khá nặng. Nghiên cứu đã tiến hành xử lý nước sông Tô Lịch với liều lượng chế phẩm 2 ml/L trong điều kiện không cần sục khí đạt kết quả khá tốt. Giá trị COD giảm được khoảng 90% và đạt tiêu chuẩn cho phép. Hàm lượng Photphat tuy chưa đạt tiêu chuẩn nhưng đã giảm khoảng 41%. Hàm lượng Nitrat trước xử lý nằm trong quy chuẩn cho phép và cũng có xu hướng giảm thêm sau quá trình xử lý.To Lich river is located in the middle of Hanoi, the country’s political cultural centre, but still suffers from serious pollution. Despite receiving a lot of attention and investment from all levels and sectors, and although many domestic and foreign projects have been implemented, the results have not been as expected. To contribute to the mitigation of river water pollution, we conduct the research on treament of To Lich River water by using Sagi Bio 2 biological product. The use of biological products will limit the impacts on humans and the environment compared to conventional chemical treatment measures. The study carried out several actual sampling and treatment at laboratory-scale. The analysis results showed that To Lich River water has been heavily polluted. The study conducted experiments to treat To Lich River water using the biological product with a dosage of 2 ml/L in the condition of no aeration, achieving a good result. COD concentration reduced by 90%, meeting the standard. Although Phosphate concentration was still over the standard, it reduced about 41%. Nitrat concentration before treatment was under the standard and tended to reduce after treatment.

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