NGHIÊN CỨU DỰ BÁO CHẤT LƯỢNG NƯỚC TRONG HỆ THỐNG THỦY LỢI BẮC HƯNG HẢI THEO CÁC KỊCH BẢN PHÁT TRIỂN KINH TẾ XÃ HỘI ĐẾN NĂM 2020=NGHIÊN CỨU DỰ BÁO CHẤT LƯỢNG NƯỚC TRONG HỆ THỐNG THỦY LỢI BẮC HƯNG HẢI THEO CÁC KỊCH BẢN PHÁT TRIỂN KINH TẾ XÃ HỘI ĐẾN NĂM 2020

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Tác giả: Vũ Thị Thanh Hương, Khôi Nguyễn Xuân, Nguyễn Đức Phong

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ Thủy lợi, 2018

Mô tả vật lý: tr.118

Bộ sưu tập: Metadata

ID: 498177

Thêm vào giỏ

Nội dung bài viết về kết quả dự báo chất lượng nước trong HTTL Bắc Hưng Hải theo các kịch bản phát triển kinh tế xã hội đến năm 2020. Kết quả dự báo cho thấy các chỉ tiêu DO, BOD5, NH4+ ở kịch bản PT2 và PT3 không được cải thiện nhiều so với kịch bản PT1. Ở kịch bản PT4 chất lượng nước được cải thiện tốt nhất. Tại 12 vị trí dự báo, chỉ còn 1 vị trí có các chỉ tiêu DO, BOD5, NH4+ không đạt tiêu chuẩn của nước tưới. Ở kịch bản PT5, mức độ ô nhiễm nước rất nghiêm trọng, 11/12 vị trí quan trắc có hàm lượng DO, BOD5, NH4+ vượt tiêu chuẩn nước tưới. Từ kết quả dự báo đã khuyến cáo đến 2020 tỷ lệ nước thải được xử lý phải đạt ≥ 90% mới đảm báo chất lượng nước phục vụ tưới tiêu. Trường hợp đặt mục tiêu tỷ lệ nước thải được xử lý 50-70% cần phải kết hợp với nhiều biện pháp hỗ trợ như: Cải tạo, xây mới các công trình tưới, tiêu để tăng nguồn cấp nước, cải thiện dòng chảy môi trường
Vận hành các công trình xả nước thải để giảm thiểu ô nhiễm nước.The contents of the research is about the results of surface water quality forecasting in Bac Hung Hai hydraulic works system for socio-economic development scenarios up to 2020. Forecasting results showed that DO, BOD5, NH4+ in scenarios PT2 and PT3 not improved much compared to the scenario PT1. For the scenario PT4, surface water quality in the canal system is best improved. At 12 forecasting locations, only 1 location with DO, BOD5, NH4+ indicators did not meet the standards of irrigation water. In scenario PT5, the level of surface water pollution is very serious, 11/12 predicted locations have the concentration of DO, BOD5, NH4+ has exceeded the standards of irrigation water. Based on the forecast results, it is recommended that by 2020, the percentage of wastewater discharged should reach ≥ 90% to ensure water quality for irrigation. In case of wastewater treatment rate of 50-70%, it should be combined with many supporting measures such as: To upgrade and build new irrigation and drainage works to increase water supply and improve environmental flows
Operation of waste water discharge works to minimize water pollution.

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