NGHIÊN CỨU KHẢ NĂNG THU SƯƠNG LÀM NƯỚC SẠCH TỪ MỘT SỐ SỢI TỰ NHIÊN

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Tác giả: Hồng Việt Dương, Thế Hưng Nguyễn, Hải Đăng Trần, Thị Hồng Hạnh Vũ

Ngôn ngữ: Vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ Đại học Thái Nguyên, 2020

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Bộ sưu tập: Metadata

ID: 419710

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Chủ đề

Tại các vùng núi cao phía Bắc nước ta luôn có sương mù dày đặc bao phủ quanh năm. Nước ta cũng có rất nhiều loại sợi tự nhiên có khả năng hút ẩm, giữ nước tốt như sợi gai, sợi đay, sợi dừa,... Việc nghiên cứu khả năng thu sương làm nước sạch từ các loại sợi tự nhiên cho đồng bào dân tộc miền núi là rất cần thiết, khi mà lượng nước sạch ở vùng núi ngày càng cạn kiệt. Kết quả thử nghiệm thu sương trong phòng thí nghiệm từ sợi gai, sợi đay, sợi dừa cho thấy trong ba loại, sợi gai có khả năng thu được nhiều nước nhất là 238,6 mL/24h ở nhiệt độ 20oC, độ ẩm từ 90 - 98% với kích thước mắt lưới 1,5x1,5 cm, diện tích lưới là 0,033 m2. Kết quả phân tích chất lượng nước thu được cho thấy nước thu sương trong phòng thí nghiệm sau một ngày hoàn toàn có thể sử dụng được cho nước sinh hoạt theo QCVN 022009/BYT nhưng không thể sử dụng được cho nước ăn uống theo QCVN 012009/BYT, nước thu sương sau ba ngày và bảy ngày chất lượng nước có hàm lượng coliform vượt quá quy chuẩn cho phép không sử dụng được cho nước sinh hoạt., Tóm tắt tiếng anh, The Nouthern mountainous areas of Vietnam have been covered by thick fog-water all year round. Vietnam also has many types of natural yarns that are capable of absorbing moisture, keeping water such as hemp yarn, jute yarn, coconut yarn, etc. This research on ability of fog harvesting into clean water from natural yarns is neccessary due to the limintaion of clearnind water for the ethnic minority group. The results of laboratory fog harvesting from hemp yarn, jute yarn, coconut yarn show that in three types, hemp yarns are capable of obtaining the most water is 238.6 mL/24h at a temperature of 20oC, humidity from 90 - 98% with 1.5x1.5 cm mesh size, net area is 0.033 m2. The results of water quality analysis showed that the mist collection water in the laboratory after a day is completely usable for domestic water according to QCVN 022009/BYT but cannot be used for water Eating according to QCVN 012009/BYT, water collected in mist after three days and seven days of water quality with coliform content exceeds the permitted standard and cannot be used for drinking water.

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