锰砂催化氧化处理三采表活剂碱洗塔废水的研究

Study on wastewater from the tertiary-oil-recovery surfactant alkali-washing column treated by the catalytic oxidation of manganese sand

为了解决三采表活剂碱洗塔废水处理技术问题,项目组采用了充填锰砂的反应器。以三采表活剂碱洗塔废水为研究介质,考察了锰砂对碱洗塔废水COD（化学需氧量）去除的催化氧化作用,以及COD初始的质量浓度、曝气量、温度和p H值等主要因素的影响。结果表明：碱性环境下锰砂催化氧化COD初始的质量浓度为7000~8000 mg/L,曝气量500 m L/min,温度40℃,反应时间10~12 h。COD的质量浓度降至60 mg/L以下,达到《污水综合排放标准》（GB8978—1996）中的二类污染物一级排放标准。锰砂催化氧化技术为三采表活剂碱洗塔废水无害化处理提供了新的途径。

In order to solve the technical problems on the treatment of wastewater from tertiary-oilrecovery surfactant alkali- washing column,the reactor packed with manganese sand has been used.By using the wastewater from tertiary oil-recovery surfactant alkali washing column as the research medium, studied was the catalytic-oxidation-reaction effect on the wastewater COD(chemical oxygen demand) removed by manganese sand, which from the alkali- washing column, and the effect of the wastewater initial COD mass concentration, aeration quantity, temperature and p H value on manganese sand have been studied too. The results showed: under alkali condition and the catalytic oxidation of manganese sand, the initial COD mass concentration of wastewater is 7000~8000 mg/L, the aeration quantity is 500 m L/min, the temperature is 40 ℃ and the reaction time is10~12 h. When the COD mass concentration is lower than 60 mg/L, the wastewater quality can meet the first class discharging standard of the second class contaminant provided by 'Integrated Wastewater Discharge Standard'(GB8978- 1996)。 Provided was the new way on wastewater treated safely by the catalytic oxidation of manganese sand, which from the tertiary- oil- recovery surfactant alkali-washing column