ĐÁNH GIÁ HÀM LƯỢNG NHÔM (Al) TRONG NƯỚC SẠCH SỬ DỤNG CHO MỤC ĐÍCH SINH HOẠT CỦA CÁC ĐƠN VỊ CẤP NƯỚC QUY MÔ NHỎ GIAI ĐOẠN 2020

ĐÁNH GIÁ HÀM LƯỢNG NHÔM (Al) TRONG NƯỚC SẠCH SỬ DỤNG CHO MỤC ĐÍCH SINH HOẠT CỦA CÁC ĐƠN VỊ CẤP NƯỚC QUY MÔ NHỎ GIAI ĐOẠN 2020 - 2022

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Phương Hiền Đỗ, Vũ Khánh Huyền Đỗ, Thái Hà Lê, Trọng Kiên Ngô, Mạnh Khải Nguyễn, Thị Mai Hương Nguyễn, Tuấn Anh Nguyễn, Tuấn Hải Nguyễn, Như Khánh Trần, Quỳnh Trâm Trần

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học Tài nguyên và Môi trường, 2024

Mô tả vật lý: tr.55-63

Bộ sưu tập: Metadata

ID: 459623

Thêm vào giỏ Liên kết toàn văn

In this study, the aluminium content was analyzed and evaluated in 266 samples of clean water from 61 water supply facilities with capacities <
1,000 m3/day across 11 provinces in the northern region during the period of 2020 - 2022. The assessment showed that aluminium was detected in clean water samples with concentrations ranging from 0.01 to 1.42 mg/L. Although the proportion of samples with aluminium levels not meeting the standard decreased from 2020 to 2022, during the period of 2020 - 2022, there were still 23 out of 266 samples with aluminium levels not meeting QCVN 01-1/2018/BYT, accounting for 8.64 %. The cause of this result was identified as water supply facilities inadequately considering the number of aluminium salts used, which needed to be more suitable and timely with the changing quality of the input water, leading to the persistence of aluminium levels in clean water and distribution systems. This research underscores the urgent need for water supply facilities to reevaluate their practices and consider the potential health risks of high aluminium levels in clean water. When evaluating the correlation between aluminum levels and some other parameters of clean water quality, the results showed that turbidity and aluminum had a significantly positive correlation with a correlation coefficient of 0.79. Conversely, the correlation between aluminium and permanganate index, ammonia, and hardness was very low.Trong nghiên cứu này, hàm lượng nhôm được phân tích, đánh giá trong 266 mẫu nước sạch của 61 cơ sở cấp nước công suất <
1.000 m3/ngày đêm trên địa bàn 11 tỉnh khu vực phía Bắc trong giai đoạn 2020 - 2022. Kết quả đánh giá cho thấy, 266 mẫu nước nghiên cứu phát hiện có nhôm trong nước sạch với hàm lượng dao động từ 0,01 đến 1,42 mg/L. Mặc dù tỷ lệ các mẫu nước có hàm lượng nhôm không đạt quy chuẩn giảm dần từ 2020 đến 2022, nhưng trong giai đoạn 2020 - 2022, vẫn có 23/266 mẫu có hàm lượng nhôm không đạt theo QCVN 01-1/2018/BYT chiếm 8,64 %. Nguyên nhân dẫn đến kết quả này được nhận định là do các cơ sở cấp nước chưa tính toán lượng muối nhôm đưa vào sử dụng chưa phù hợp và kịp thời với sự biến đổi của chất lượng nước đầu vào, dẫn đến vẫn còn tồn tại hàm lượng nhôm trong nước sạch và trên hệ thống phân phối. Khi đánh giá mối tương quan giữa hàm lượng nhôm và một số thông số chất lượng nước sạch khác, kết quả cho thấy độ đục và nhôm có mối tương quan thuận rõ rệt với hệ số tương quan Ccorrel = 0,79. Ngược lại, mối tương quan giữa nhôm với chỉ số pecmanganat, amoni và độ cứng rất thấp.

1. Đọc trực tuyến

1. Đọc trực tuyến

Tạo bộ sưu tập với mã QR