The Organic Pollutant Characteristics of Lurgi Coal Gasification Wastewater before and after Ozonation

Table 1

Main physical and chemical properties of LCGW discharge in this plant.

Parameter	Concentration	Unit
pH	8.0 ± 0.16
COD	4066.67 ± 200	mg·L^−1
TOC	1214 ± 50	mg·L^−1
BOD5	419 ± 10	mg·L^−1
NH4^+-H	300 ± 20	mg·L^−1
CN^−	0.009 ± 0.001	mg·L^−1
Oil	58.34 ± 3	mg·L^−1
Benzopyrene	0.00082 ± 0.00003	mg·L^−1