Emission standard
1.Class I (GB8978-1996)
Total cadmium 0.1
Total chromium 1.5/cr6 + 0.5
Total lead 1.0
Total nickel 1.0
2.Category II
PH=6~9
COD=150
BOD=60
Cod-chemical oxygen demand (mg/L)
BOD-biochemical oxygen demand (mg/L)
Cyanide 0.5
Sulfide 1.0
Fluoride 15
Phosphate (as P) 1.0
Copper 0.5
Zinc 2.0
Mn 5.0
Anionic synthetic detergent 10
3.Harmful gases (GB 16297-1996)
***Maximum allowable emission concentration
---Maximum allowable emission rate
——All refer to level 2——
Existing (new source)
Nitrogen oxides
*1700 (1400) mg/m3-nitric acid and nitrogen fertilizer plant
*420 (240) mg/m3-others
-0.9(0.77)kg/h_ 15m
-1.5(1.3)kg/h_ 20m
-5.1(4.4)kg/h_ 30m
-8.9(7.5)kg/h_ 40m
-14(12) kg/h_ 50m
-37(31) kg/h_ 80m
Sulfur dioxide
*1200 (960) mg/m3-related production
*700 (550) mg/m3-related use
-3.0(2.6)kg/h_ 15m
-5.1(4.3)kg/h_ 20m
-17(15) kg/h_ 30m
-30(25) kg/h_ 40m
-45(39) kg/h_ 50m
-120(110)kg/h_ 80m
Hydrogen chloride
*150(100)mg/m3
-0.30(0.26)kg/h-15m
-0.51(0.43)kg/h-20m
-1.70(1.40)kg/h-30m
-3.00(2.60)kg/h-40m
-6.40(3.80)kg/h-50m
-12(10) kg/h-80m
Fluoride
*11(9.0)mg/m3
-0.12(0.10)kg/h-15m
-0.20(0.17)kg/h-20m
-0.69(0.59)kg/h-30m
-1.20(1.00)kg/h-40m
-1.80(1.50)kg/h-50m
-4.90(4.20)kg/h-80m
Sulfuric acid mist
*70(45)mg/m3
-1.8(1.5)kg/h-15m
-3.1(2.6)kg/h-20m
-10(8.8) kg/h-30m
-18(15) kg/h-40m
-27(23) kg/h-50m
-74(63) kg/h-80m
Chromium fog
*0.08(0.07)mg/m3
-0.009(0.008)kg/h-15m
-0.015(0.013)kg/h-20m
-0.051(0.043)kg/h-30m
-0.089(0.076)kg/h-40m
-0.140(0.120)kg/h-50m
-0.190(0.160)kg/h-60m
Chlorine
*85(65)mg/m3
-0.60(0.52)kg/h-25m
-1.00(0.87)kg/h-30m
-3.40(2.90)kg/h-40m
-5.90(5.00)kg/h-50m
Dust and productive dust
A.Carbon black dust, contaminated dust
*22(18)mg/m3
-0.60(0.51)kg/h-15m
-1.00(0.85)kg/h-20m
-4.00(3.40)kg/h-30m
-6.80(5.80)kg/h-40m
B.Glass wool, slag wool and quartz powder
*80(60)mg/m3
-2.2(1.9)kg/h-15m
-3.7(3.1)kg/h-20m
-14(12) kg/h-30m
-25(21) kg/h-40m
C.Others
*150(120)mg/m3
-4.1(3.5)kg/h-15m
-6.9(5.9)kg/h-20m
-27(23) kg/h-30m
-46(39) kg/h-40m
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