Chất lượng nước sạch của một số cơ sở cung cấp nước công suất dưới 1000 m3/ngày đêm tại Việt Nam năm 2020-2021

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Phương Hiền Đỗ, Vũ Khánh Huyền Đỗ, Hữu Hưng Nguyễn, Mạnh Khải Nguyễn, Phương Hằng Nguyễn, Thị Mai Hương Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại: 628.7 Sanitary engineering for rural and sparsely populated areas

Thông tin xuất bản: Tạp chí Y học Việt Nam (Tổng hội Y học Việt Nam), 2022

Mô tả vật lý: 195-202

Bộ sưu tập: Metadata

ID: 499025

Thêm vào giỏ

Mô tả và phân tích đặc điểm chất lượng nước sạch sử dụng cho mục đích sinh hoạt của một số cơ sở sản xuất và cung cấp nước với công suất dưới 1000 m3/ngày đêm tại Việt Nam trong năm 2020 và 2021. Tổng số 355 mẫu nước sạch được đánh giá theo QCVN 01-1:2018/BYT - Quy chuẩn kỹ thuật quốc gia về chất lượng nước sạch sử dụng cho mục đích sinh hoạt. Có 62,3% số mẫu có ít nhất một chỉ tiêu không đạt quy chuẩn, tập trung chủ yếu ở khu vực miền Bắc. Các chỉ tiêu không đạt thường gặp là clo dư tự do, nhôm, chỉ số pecmanganat, độ đục
Coliform tổng số và trực khuẩn mủ xanh. Kết quả cho thấy hiệu quả xử lý nước tại nhiều cơ sở cấp nước chưa cao, chưa đảm bảo chất lượng nước sạch theo QCVN 01-1:2018/BYT. Hệ thống phân phối nước của một số đơn vị cấp nước có dấu hiệu tái nhiễm vi sinh vật, có khả năng tạo màng vi sinh bên trong đường ống.The objective of the study is to describe and analyze the characteristics of clean water for domestic use at several water suppliers with a capacity under 1000m3 per day in Vietnam in 2020-2021. The study was performed on 355 water samples, each sample will be analyzed for 97 parameters according to QCVN 01-1:2018/BYT National technical regulation for domestic water qualiy. The results show that 62.3% of the total samples have at least one parameter that did not meet the standard, most of these unqualified samples were collected in the North Vietnam. Common unqualified parameters are free residual chlorine, aluminum, permanganate index, turbidity of water, total Coliforms and Pseudomonas aeruginosa. The results show that the water treatment process in many water suppliers is insufficient, and the quality of finished clean water is not guaranteed according to QCVN 01-1:2018/BYT. The water distribution system of some water supply facilities shows signs of re-contamination of microorganisms, capable of forming a biofilm inside the water system.

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