ICS 13.060.30 Z 77 DB46 DB 46/ 483—2019 Discharge standard of water pollutants for rural sewage treatment facilities 2019 - 11 - 04 2019 - 12 - 15 DB46/ 483—2019 GB/T 1.1-2009 2019 11 I DB46/ 483—2019 1 3 500 m /d 2 GB 3097 GB 3838 GB 4284 GB 5084 GB/T 6920 GB 11607 GB/T 11893 GB/T 11901 GB 11914 GB 18918 GB/T 18921 GB/T 23486 GB/T 31962 HJ 347.1 HJ 347.2 HJ/T 399 HJ 535 HJ 574 HJ 636 HJ 637 HJ 773 PH 3 1 DB46/ 483—2019 3.1 rural sewage 3.2 rural sewage treatment facility 3.3 existing rural sewage treatment facility 3.4 new rural sewage treatment facility ( ) 4 4.1 4.1.1 4.1.2 2020 4.2 4.2.1 4.2.1.1 4.2.1.2 GB/T 31962 3 500 m /d 1 mg/L 1 pH / 6-9 2 SS 20 30 60 3 CODCr 60 80 120 8 20 25 20 -- -- 4 NH3-N 5 TN N N 2 DB46/ 483—2019 1 6 TP P 1 3 -- 3 5 20 104 -- -- 7 8 / /L 100 m3/d GB 3838 GB3097 4.2.2 4.2.2.1 GB 3838 GB 3097 4.2.2.2 4.2.2.3 5 m /d 4.2.2.4 5 m /d 3 3 4.2.2.5 4.3 4.3.1 4.3.2 GB 18918 4.3.3 a) b) c) d) 4.3.4 GB/T 23486 GB 5084 GB 11607 GB/T 18921 GB 4284 5 5.1 5.2 3 DB46/ 483—2019 5.3 2 1 pH GB/T 6920 2 SS 3 CODCr GB/T 11901 GB 11914 HJ/T 399 4 NH3-N HJ 535 5 TN HJ 636 6 TP GB/T 11893 7 HJ 637 HJ 347.1 8 HJ 347.2 6 6.1 6.2 6.3 _________________________________ 4