关键词: 改性煤矸石, 生产废水, 水处理

Abstract: The modified coal gangue was used to treat the wastewater from distillation section of monosodium glutamate. The results show that as the raw water pH=1.8, COD 770 mg/L, NH₃-N 217 mg/L, turbidity 29 NTU, 120 mesh  modified coal gangue at 1g was added into 50 mL wastewater. After vibrating adsorption for 120 min, the water with COD of 232.46 mg/L, ammonia nitrogen of 78.84 mg/L and turbidity of 8.5 NTU was yielded. The removal efficiency of COD, ammonia nitrogen, turbidity could reach 69.81%, 63.67% and 70.73%,respectively. The study provided a theoretical basis for the modified coal gangue as the adsorbent in treatment of wastewater from monosodium glutamate production and other high-concentration ammonia nitrogen wastewater. It also provide a means of wastewater treatment in production of monosodium glutamate.

Key words: Modified coal gangue, Wastewater from production, Water treatment