NGHIÊN CỨU HIỆN TRẠNG Ô NHIỄM NƯỚC TẠI LÀNG NGHỀ CƠ KHÍ XÃ XUÂN TIẾN, HUYỆN XUÂN TRƯỜNG, NAM ĐỊNH

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Tác giả: Tường Mai Chu, Thị Cẩm Vân Đỗ, Hương Quỳnh Phạm, Nguyệt Ánh Phạm, Thị Bích Thảo Trần

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2022

Mô tả vật lý: tr.35-43

Bộ sưu tập: Metadata

ID: 332114

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The problem of water pollution in mechanical craft villages is not only in Vietnam but also in most developing countries. In order to propose appropriate solutions in water resource management, the wastewater characteristics as well as the current state of surface water and groundwater quality in the mechanical craft village of Xuan Tien commune need to be evaluated overall. Investigations, interviews, field surveys combined with sampling and analysis of water characteristics are applied to obtain accurate assessment results. The results show that with very little production wastewater and discharged together with domestic wastewater, the wastewater of the craft village is not contaminated by metals, phenols, or grease, but the analyzed samples have color, TSS, the concentration of organic substances fluctuated quite large (Color 31.5 – 1,817 Pt-Co, COD 81.6 – 924.6 mg/l, BOD5 42.4 – 498.6 mg/l , TN 14.6 – 236.5 mg/l, TP 0.3 – 24.3 mg/l, Coliform 1,300 – 14,000 MPN/100ml), BOD5/COD ratio ranged from 0.43 to 0.54. The quality of surface water and groundwater is quite good. Therefore, domestic wastewater is an environmental issue that deserves the most attention in Xuan Tien mechanical craft village.Vấn đề ô nhiễm nước ở các làng nghề cơ khí không chỉ xảy ra ở Việt Nam mà còn là vấn đề của hầu hết các nước đang phát triển. Để đề xuất các giải pháp phù hợp trong quản lý nguồn nước, đặc điểm nước thải cũng như hiện trạng chất lượng nước mặt, nước ngầm tại làng nghề cơ khí xã Xuân Tiến cần được đánh giá tổng thể. Công tác điều tra, phỏng vấn, khảo sát hiện trường kết hợp với lấy mẫu và phân tích đặc trưng nguồn nước được áp dụng để có được kết quả đánh giá chính xác. Kết quả chỉ ra rằng, với lưu lượng nước thải sản xuất rất ít và thải chung với nước thải sinh hoạt, nước thải của làng nghề không bị ô nhiễm bởi kim loại, phenol, hay dầu mỡ mà các mẫu phân tích có độ màu, TSS, nồng độ các chất hữu cơ có nồng độ dao động khá lớn (Độ màu 31,5 -1.817 Pt-Co, COD 81,6 – 924,6 mg/l, BOD5 42,4 – 498,6 mg/l, TN 14,6 – 236,5mg/l, TP 0,3 – 24,3mg/l,Coliform 1.300–14.00MPN/100ml), tỷ lệ BOD5/COD dao động từ 0,43 – 0,54. Chất lượng nước mặt, nước ngầm còn khá tốt. Vì vậy, nước thải sinh hoạt là vấn đề môi trường đáng được quan tâm nhất ở làng nghề cơ khí Xuân Tiến.

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