Đánh giá hiệu quả xử lý nước thải thủy sản bằng mô hình Bardenpho 5 giai đoạn kết hợp bể USBF
2020; Volume: 56(2); Linguagem: Inglês
10.22144/ctu.jvn.2020.024
ISSN2815-5599
AutoresLê Hoàng Việt, Nguyễn Võ Châu Ngân, Nguyễn Văn Thiệu, Nguyễn Chí Linh,
Tópico(s)Heavy Metal Pollution Remediation
ResumoThe study is aimed to put the 5-stage Bardenpho tank in practice on treating aquatic products processing wastewater through survey its operation parameters. The tests was carried out at the lab-scale of 5-stage Bardenpho model connected to the USBF tank. The study results showed that when operating Bardenpho tank with loading rate of 1.54 kg BOD/m3, the total hydraulic retention time of 8 hours, inlet wastewater has COD, BOD5, TN and TP concentration of 933.25 ± 20.67; 515.67 ± 25.49; 122.49 ± 7.06; and 18.33 ± 1.25 mg/L; the pollutant values of treated wastewater reduced to 27.53 ± 4.47; 12.58 ± 1.05; 21.53 ± 1.11; and 7.30 ± 0.08 mg/L respectively. All monitoring parameters met standard of QCVN 11-MT:2015/BTNMT (column A). With the total hydraulic retention time of 7 hours, the loading rate of 1.83 kg BOD/m3.day-1, inlet wastewater has COD, BOD5, TN and TP concentration of 998.68 ± 27.49; 523.67 ± 32.05; 124.13 ± 8.29; and 17.50 ± 1.47 mg/L; the outlet wastewater has reduced pollutants concentration to 50.74 ± 6.73; 26.21 ± 1.14; 26.14 ± 1.31; and 8.12 ± 0.30 mg/L respectively. All monitored parameters met the standard of QCVN 11-MT:2015/BTNMT (column A). The results showed that the 5-stage Bardenpho tank could be used to treat aquatic products processing wastewater reaching the national discharge standard.
Referência(s)