研究论文
张秋波,李忠,胡克源.酚水及煤气化废水的湿式氧化处理[J].环境科学学报,1987,7(3):305-312
酚水及煤气化废水的湿式氧化处理
- TREATMENT OF PHENOL-WATER AND THE WASTEWATER FROM COAL GASIFICATION PROCESS BY WET OXIDATION
- 摘要：在二升高压釜中研究了酚水（3540mg酚/L、9278mgCOD/L）和煤气化废水（7866mg酚/L、22928mgCOD/L）的湿式氧化处理,反应温度控制在180—250℃,氧分压为9.8×105—34.3×105Pa。煤气化废水在温度为190—250℃、氧分压为9.8×105Pa,反应90min酚去除60—90％及COD降低35—55％。 酚水和煤气化废水的表观动力学研究表现出快速及慢速反应段,反应速率与COD值呈一次方关系,当温度一定时,反应速率与氧分压为0.25级关系,影响程度明显低于温度。
- Abstract：The wet oxidation for the purification of the phenol-water and the wastewater from coal gasification has been investigated in a 2L autoclave at temperature from 180 to 250°C, oxygen pressure of 9.8-34.3×105 Pa, and initial concentrations of phenol at 3540mg/L, 7866mg/L and COD at 9278mg/L, 22928mg/L, respectively. 60-90% of the phenol and 35-55% of the COD were removed in 90 minutes at temperature from190°C to 250°C and oxygen pressure of 9.8×105Pa.The COD decay during wet oxidation at high temperature involves two stages; a fast decay of first order with respect to COD value followed by a slow one of the same order. The rate constants of COD decay of phenol-water and coal gasification wastewater can be expressed as follows:The order of reaction with respect to oxygen pressure has been determined to be 0.25 at 220°C.
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