臭氧氧化组合生物膜法降解船舶灰水研究

摘要为了高效经济地降解船舶灰水,采用了臭氧预氧化组合移动床生物膜反应器方法对模拟灰水进行深度降解。分别探究了在没有硅铝载体催化剂以及有足量催化剂的条件下,温度、pH值、臭氧通入时间对臭氧化处理船舶灰水的影响;不同温度、pH值、水力停留时间对移动床生物膜反应器降解臭氧预氧化后出灰水的指标影响。结果表明,在足量催化剂下,温度为30 ℃,pH=9.5,灰水体积3 L,制氧机氧气流率1 L·min^-1,氧气浓度94%,臭氧通入时间为9 min,对模拟船舶灰水中的COD去除率达到68.09%,氨氮去除率达到35.53%,油类去除率达到70.93%。移动床生物膜反应器阶段,在水力停留时间为9 h,温度30 ℃,pH值为9的运行条件下,COD去除率达到84.8%、氨氮去除率达到76.1%、油类去除率达到82.1%。臭氧组合移动床生物膜反应器对模拟的船舶灰水处理具有良好的效果,其中油类和氨氮的出水浓度达到了船舶污水的排放标准,可为深度处理船舶灰水提供参考价值。

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	廖宏国
	崔政伟
	杨建东

关键词：船舶灰水臭氧化移动床生物膜反应器

Abstract： In order to degrade the ship grey water efficiently and economically, the pre-ozonation and moving bed biofilm reactor was combined to degrade it in depth. The effects of temperature, pH and ozone dose on the ozonation of ship grey water were investigated with sufficient silicon aluminum supported catalyst and in absence of it, respectively. Effects of different temperature, pH and hydraulic retention time on degradation of pre-ozonated effluent were subsequently studied in moving bed biofilm reactor. The results showed that the removal rate of COD, NH⁺₄-N and oil for the simulated ship grey water reached 68.09%, 35.53% and 70.93%, respectively with sufficient silicon aluminum supported catalyst in stage of pre-ozonation, and in this process, the temperature of 30 ℃, pH of 9.5, ozone penetration time of 9 minutes were employed while the volume of grey water was 3 L, the oxygen flow rate in oxygen generator was 1 L·min^-1 and concentration of oxygen was 94%. In the stage of moving bed biofilm reactor degradation, the removal rate of COD, ammonia nitrogen and oil reached 84.8%, 76.1% and 82.1%, respectively in condition of hydraulic retention time of 9 h, temperature of 30 ℃ and pH of 9. Consequently, ozonation combined moving bed biofilm had observably effects on simulated ship grey water degradation, which provides a reference for true treatment of ship grey water.

Keywords： ship grey water ozone oxidation moving bed biofilm reactor

Received 2022-10-20;

Corresponding Authors: 崔政伟,教授,E-mail:cuizhengwei@jiangnan.com;杨建东,高级工程师,E-mail: yjdjs250@126.com。 Email: cuizhengwei@jiangnan.com;yjdjs250@126.com

About author: 廖宏国(1998-),男,硕士研究生,研究方向为过程装备与控制工程。

引用本文:

廖宏国, 崔政伟, 杨建东.臭氧氧化组合生物膜法降解船舶灰水研究[J]. 化学工业与工程, 2024,41(3): 191-198

LIAO Hongguo, CUI Zhengwei, YANG Jiandong.Degradation of ship grey water by combination of pre-ozonation and enhanced biofilm[J]. Chemcial Industry and Engineering, 2024,41(3): 191-198

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