Đánh giá chất lượng nước thải chăn nuôi sau bể biogas

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Thị Huyền Trang Đào, Thị Minh Hòa Dương, Thị Phả Trần

Ngôn ngữ: vie

Ký hiệu phân loại: 628.3 Sewage treatment and disposal

Thông tin xuất bản: Khoa học và Công nghệ (Đại học Thái Nguyên), 2017

Mô tả vật lý: 197-200

Bộ sưu tập: Metadata

ID: 534848

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Chủ đề

Article assessing the quality of livestock wastewater after biogas tank in Huong Son Ward, Thai Nguyen City. The results showed that DO: 2 wastewater samples NT1 and NT2 were within the permitted threshold, NT3 samples were 0.55 times lower than the permitted threshold. COD criteria: Waste water after biogas digester NT1 exceeded 5.12 times, NT2 exceeded 4.48 times and NT3 exceeded 2.24 times compared to QCVN 01-39,2011 and QCVN 08,2015 had 1.1 times higher than , NT2 exceeded 1.49 times and NT3 was within the permitted threshold. BOD5 criteria: NT1 wastewater sample is 1.06 times, NT2 exceeds 9.33 times and NT3 exceeds 4.67 times compared to QCVN OV-39 2011 and QCVN 08: 2015 with NT1 4.27 times, NT2 exceeds 3.73 times and NT3 exceeded 1.87 times. Target P: Model NT2 and NT3 are within permitted thresholds, particularly NT1 wastewater samples exceed the permitted standard 4.3 times compared to QCVN 08.2015.Đánh giá chất lượng nước thải chăn nuôi sau bể biogas tại phường Hương Sơn, thành phố Thái Nguyên. Kết quả cho thấy chỉ tiêu DO: 2 mẫu nước thải NT1 và NT2 nằm trong ngưỡng cho phép, mẫu NT3 dưới ngưỡng cho phép 0,55 lần. Chỉ tiêu COD: Nước thải sau bể biogas NT1 vượt 5,12 lần, NT2 vượt 4,48 lần và NT3 vượt 2,24 lần so với QCVN 01-39,2011 và QCVN 08,2015 có mẫu NT1 vượt 1,71 lần, NT2 vượt 1,49 lần và NT3 trong ngưỡng quy chuẩn cho phép. Chỉ tiêu BOD5: Mẫu nước thải NT1 vợt 1,06 lần, NT2 vượt 9,33 lần và NT3 vượt 4,67 lần so với QCVN OV-39 2011 và QCVN 08:2015 có mẫu NT1 vợt 4,27 lần, NT2 vượt 3,73 lần và NT3 vượt 1,87 lần. Chỉ tiêu P: Mẫu NT2 và NT3 nằm trong ngưỡng cho phép, riêng mẫu nước thải NT1 vượt ngưỡng quy chuẩn cho phép 4,3 lần so với QCVN 08.2015.

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