煤气化废水中含有焦油、苯酚、氨氮、氟化物、硫化物、杂环类、多环芳烃等有毒及难降解物质，处理难度大，污染物浓度高。采用竹制生物炭构建生物炭-厌氧活性污泥系统，考察pH、生物炭质量浓度对系统处理煤气化废水的效能。采用颗粒内扩散方程对试验数据进行拟合，结果表明，在pH=8时COD和总酚的处理效果优于偏酸性（pH=6）条件，系统COD降到600 mg/L，总酚降到50 mg/L；在此条件下，当生物炭的质量浓度为20 g/L时，总酚可完全去除。通过对试验数据用颗粒内扩散方程进行拟合，结果表明，生物炭-厌氧活性污泥体系处理煤气化废水中的COD和苯酚的去除主要是生物炭的颗粒吸附作用。

Typical coal gasification wastewater contains high concentration of tar,phenol,ammonia-containing compounds,fluorides,sulphides,heterocycles,polycyclic aromatic hydrocarbon and other toxic and refractory substances,which is difficult to degrade.Bamboo-derived biochar is utilized to set up a biochar-anaerobic activated sludge system that is used to treat with coal gasification wastewater.Influences of pH and mass content of biochar on the treatment efficiency are investigated.Moreover,the test data are fit by the intraparticle diffusion equation.It is indicated that the removal effects of COD and total phenol under pH=8 are better than that under pH=6,and COD content can drop to 600 mg·L^-1 and total phenol content can decrease to 50 mg·L^-1.Under pH=8,total phenol can be completely removed when the dosage of biochar is 20 g·L^-1.Based on fitting the experimental data with intraparticle diffusion equation,the results show that the removal of COD and total phenol depends mainly on the adsorption action of biochar particles in the biochar-anaerobic activated sludge system.