Đánh giá tình hình phát sinh nước thải tại khu vực phía nam tỉnh Bình Dương=Assessing the wastewater generation in the south of Binh Duong province

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Tác giả: NgọC TuấN Lê, Mạnh Quân Tào, Thị Thuý TrầN

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Phát triển Khoa học & Công nghệ: Chuyên san Khoa học Tự nhiên, 2018

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Bộ sưu tập: Metadata

ID: 473547

Thêm vào giỏ

Nghiên cứu nhằm mục tiêu đánh giá tình hình phát sinh nước thải tại khu vực phía nam tỉnh Bình Dương (gồm thị xã Dĩ An, Thuận An, Tân Uyên, Bến Cát và thành phố Thủ Dầu Một), nơi diễn ra nhiều hoạt động dân sinh kinh tế cũng như nguy cơ ô nhiễm nguồn nước. Thông qua điều tra nguồn thải, thu thập tài liệu và kỹ thuật GIS, tải lượng các chất ô nhiễm chủ yếu (BOD, COD, SS, tổng N và tổng P) phát sinh từ các nguồn thải chính (sinh hoạt, công nghiệp, chăn nuôi) được tính toán và dự báo đến năm 2025, 2030. Kết quả cho thấy, tải lượng các chất ô nhiễm năm 2016 khoảng 105.273,6 tấn/năm, phát sinh nhiều nhất từ nước thải sinh hoạt (khoảng 60%). Thị xã Dĩ An và Thuận An phát sinh tải lượng ô nhiễm nhiều nhất khu vực nghiên cứu, tương ứng 5,4 tấn/ha.năm và 2,8 tấn/ha.năm. COD và BOD chiếm tỷ trọng cao trong các thông số ô nhiễm được xét, lần lượt 0,5 tấn/ha.năm và 0,26 tấn/ha.năm. Để ước lượng tải lượng ô nhiễm phát sinh trong tương lai, nghiên cứu xem xét 02 kịch bản xử lý nước thải giữ nguyên hiện trạng (KB H) và xử lý đạt loại A theo các quy chuẩn tương ứng (KB A). Đến năm 2025, tổng tải lượng ô nhiễm tại địa phương gia tăng 2,1 lần - KB H và 1,2 lần - KB A. Các số liệu tương ứng vào năm 2030 là 3,1 và 2,0 lần, đặt ra nhiều áp lực cho chất lượng nguồn nước. Theo đó, cần tiếp tục nghiên cứu, đánh giá khả năng tiếp nhận nước thải của nguồn nước, tạo cơ sở kiện toàn hệ thống quản lý chất lượng nước nói riêng và quản lý môi trường nói chung tại điạ phương.This study aimed to evaluate the wastewater generation in the south of Binh Duong province (including Di An, Thuan An, Tan Uyen, Ben Cat districts and Thu Dau Mot city) where is many development activities were undertaken as well as the risk of water pollution. By survey, data collection, and GIS, main pollutant loads (BOD, COD, SS, total N and total P) generated from main waste sources (domestic, industry, and livestock) were estimated and forecasted until 2030. The results showed that the amount of pollutant load in 2016 was about 105,273.6 ton/year, most of which came from domestic wastewater (about 60%). Di An and Thuan An districts generated the highest pollutant load in the study area, corresponding to 5.4 ton/ha.year and 2.8 ton/ ha.year. COD and BOD occupied a high proportion of pollutant parameters, which were 0.5 ton/ha.year and 0.26 ton/ha.year, respectively. To estimate the pollutant load in the future, two wastewater treatment scenarios were taken into the consideration as similar as the current status (KB H) and according to A standard (KB A). By 2025, the total pollutant load would increase 2.1 times for KB H and 1.2 times for KB A. The corresponding figures for 2030 would be 3.1 and 2.0 times, respectively, indicating many pressures on the water quality. Accordingly, it is necessary to continue studying and evaluating the capacity of water sources for receiving wastewater, to the create basis for water quality management in particular and environmental management in general.

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