ICS 65.150 B52 DB46 DB 46/T 475—2019 Discharge requirement of Aquaculture tailwater 2019 - 03 - 29 2019 - 06 - 01 DB46/T 475—2019 GB/T 1.1-2009 I DB46/T 475—2019 I DB46/T 475—2019 1 2 GB 3097 GB 3838 GB/T 5750 GB/T 6920 GB/T 7470 GB/T 7474 GB/T 7475 GB/T 7488 GB/T 11892 GB/T 11893 GB/T 11894 GB 11897 GB 11898 GB/T 11901 GB 12763.4 GB/T 12997 GB/T 12998 GB/T 12999 GB/T 16489 GB 17378.3 GB 17378.4 GB 17378.7 pH (BOD5 N,NN,N- -1,4 -1,4 3 3.1 1 DB46/T 475—2019 3.2 3.3 4 4.1 4.1.1 4.1.2 4.1.3 4.2 4.2.1 (1)GB 3838 1 (2)GB 3838 1 4.2.2 (1)GB 3097 2 (2)GB 3097 2 4.3 4.3.1 1 2 DB46/T 475—2019 1 1 mg/L 2 90 45 pH 6.0 9.0 3 (CODMn mg/L 25 15 4 (BOD5 mg/L 15 10 5.0 3.0 1.0 0.5 5 mg/L 6 mg/L 7 mg/L 0.5 0.2 8 mg/L 0.2 0.1 9 mg/L 0.2 0.1 10 mg/L 1.0 0.5 4.3.2 2 2 1 2 mg/L 90 pH 6.5 9.0 35 7.0 8.5 0.5 pH 3 (CODMn mg/L 20 10 4 (BOD5 mg/L 10 6 1.00 0.50 0.10 0.05 0.80 0.20 0.20 0.10 5 mg/L 6 mg/L 7 8 mg/L mg/L 9 mg/L 0.20 0.10 10 mg/L 0.50 0.20 5 5.1 GB/T 12997 GB/T 12998 GB/T 12999 3 DB46/T 475—2019 5.2 5.2.1 3 3 1 2 (SS) GB/T 11901 (1) pH GB/T 6920 (2)pH 3 (CODMn) GB/T 11892 4 (BOD5) GB/T 7488 5 GB/T 11894 6 ) GB/T 11893 7 GB/T 16489 8 9 (1)N,N- -1,4 GB 11898 (2)N,N- -1,4 GB 11897 (1) GB/T 7475 (2) GB/T 7474 10 GB/T 7475 (1) 5.2.2 4 4 1 2 3 4 (SS) pH GB GB GB GB pH (CODMn) (BOD5) 17378.4 17378.4 17378.4 17378.4 (1) (2) 5 GB 17378.4 6 7 8 9 10 ) ) (1) (2) (1) (2) (1) (2) (1)N,N(2)N,N(1) (2) (1) (2) GB 17378.4 GB 17378.4 -1,4 -1,4 GB 11898 GB 11897 GB 17378.4 GB 17378.4 (1) 4 DB46/T 475—2019 6 5 DB46/T 475—2019 GB11607-1989 SC/T 9101-2007 SC/T 9103-2007 DB33/ 453-2006 _________________________________ 6