Đánh giá khả năng tiếp nhận nước thải sông Đào Nam Định bằng phương pháp mô hình

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Tác giả: Văn Việt Nguyễn, Văn Dương Phạm, Thị Thu Hương Trần

Ngôn ngữ: Vie

Ký hiệu phân loại: 627 Hydraulic engineering

Thông tin xuất bản: Tạp chí Xây dựng 2023

Mô tả vật lý: 133-139

Bộ sưu tập: Metadata

ID: 407587

Thêm vào giỏ Liên kết toàn văn

Nam Định là một tỉnh ven biển thuộc Đồng bằng sông Hồng - nơi có 04 sông lớn cung cấp nước mặt chính của tỉnh với nguồn nước dồi dào nhưng lượng nước phân bố giữa các tháng trong năm không đều
mặt khác, do là tỉnh ven biển nên chịu ảnh hưởng của biến đổi khí hậu, xâm nhập mặn khu vực cửa sông, ven biển có xu hướng tăng. Ngoài ra, thực trạng quản lý tài nguyên nước trên địa bàn tỉnh Nam Định cho thấy, nước thải hầu hết từ TP Nam Định, các thị trấn, các khu cụm công nghiệp, làng nghề trên địa bàn 10 huyện, thành phốđều chảy vào các tuyến sông, kênh, mương nội đồng, nội thị rồi chảy vào 4 tuyến sông lớn là sông Hồng, sông Đào, sông Đáy, sông Ninh Cơ. Mặt khác, chưa có hệ thống thu gom, xử lý nước thải của nhiều cụm công nghiệp, làng nghề, khu dân cư tập trung là nguyên nhân ảnh hưởngđến quản lý, sử dụng tài nguyên nước, đến chất lượng nguồn nước trên địa bàn tỉnh. Trong khuôn khổ nghiên cứu này, việc đáng giá khả năng tiếp nhận nước thải sông Đào Nam Định được mô phỏng bằng mô hình MIKE11-HD, MIKE11-AD và MIKE11-ECOLab. Kết quả mô phỏng cho thấy rằng, các thông sốBOD5, N-NH4+ và P-PO43-đều không vượt quy chuẩn QCVN08-MT:2015/BTNMT (cột B1), chất lượng nước sông trên sông Đào vẫn trong tình trạng tốt, còn khả năng tiếp nhận thêm nguồn thải nếu nguồn thải được xử lý trước khi xả thải ra môi trường, Tóm tắt tiếng anh, Nam Dinh is a coastal province in the Red River Delta - where there are 04 major rivers supplying the main surface water of Nam Dinh province with abundant water resources but the water volume distributed between months of the year is uneven
on the other hand, as a coastal province, it is affected by climate change, saltwater intrusion in estuarine and coastal areas tends to increase. In addition, the current situation of water resources management in Nam Dinh province shows that wastewater mainly from Nam Dinh city, towns, industrial clusters and craft villages in 10 districts and cities flows into rivers, canals, infield and urban canals and then flows into 4 major rivers: Red River, Dao River, Day River and Ninh Co River. Furthermore, the collection and treatment system of wastewater from many industrial clusters, craft villages, and residential areas has not yet been established, which affects the management and use of water resources, as well as the water quality in the province. In the context of this study, the capacity to receive wastewater of Dao River in Nam Dinh is simulated by MIKE11-HD, MIKE11-AD and MIKE11-ECOLab models. The simulation results show that parameters BOD5, N-NH4+and P-PO43- do not exceed QCVN08-MT:2015/BTNMT (column B1), the river water quality on Dao River is still in good condition, and the capacity to receive additional waste sources if the waste source is treated before being discharged into the environment

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