炼化特殊污水强化预处理技术工业试验

石油炼制与化工 ›› 2022, Vol. 53 ›› Issue (3): 110-116.

炼化特殊污水强化预处理技术工业试验

吴潮汉¹,郭晓培²,李阳²

1. 中国石化湛江东兴石油化工有限公司
2. 中国石油大学（北京）重质油国家重点实验室，北京市油气污染防治重点实验室

收稿日期:2021-11-08 修回日期:2021-12-13 出版日期:2022-03-12 发布日期:2022-03-03
通讯作者: 李阳 E-mail:yang16hb@163.com
基金资助:
中国石油化工股份有限公司合同项目

INDUSTRIAL EXPERIMENT OF ENHANCED PRETREATMENT TECHNOLOGY FOR REFINERY SPECIAL WASTEWATER

Received:2021-11-08 Revised:2021-12-13 Online:2022-03-12 Published:2022-03-03
Contact: Yang LI E-mail:yang16hb@163.com
Supported by:
Contract project of China Petroleum & Chemical Corporation

摘要/Abstract

摘要： 炼化特殊污水因水质非常差、处理困难，成为企业的环保难题。针对炼化特殊污水水质特性，设计了一套“隔油-浮选-电化学氧化-中和-过滤”的强化预处理工艺及中试装置，186 d现场运行结果表明：出水COD、石油类和悬浮物含量达标率均为100%，氨氮浓度达标率为97.8%，B/C（BOD₅/COD）平均提升至0.334，水质满足综合污水场接纳要求。电化学氧化单元对氨氮和总氮去除率分别高达96.5%和93.3%，B/C提高67.0%。处理成本较低，平均运行成本为 4.56元/m³。

关键词: 炼化特殊污水, 电化学氧化, 可生化性, 化学需氧量, 氨氮

Abstract: The refinery special wastewater has become an environmental problem for enterprises due to its poor water quality and difficulty of treatment. Aiming at the water quality characteristics of the special wastewater, a set of enhanced pretreatment process and pilot plant of “oil separation-flotation-electrochemical oxidation-neutralization- filtration” were designed. The results of 186 days on-site operation showed that the compliance rate of effluent COD, petroleum, and suspended solids concentration was 100%, the compliance rate of ammonia nitrogen concentration was 97.8%, and the average B/C increased to 0.334, and the water quality could meet the acceptance requirements of the integrated wastewater treatment plant. The removal rates of ammonia nitrogen and total nitrogen in the electrochemical oxidation unit were up to 96.5% and 93.3%, respectively, and the B/C value of the wastewater was increased by 67.0%. The processing cost was low, and an average operating cost was 4.56 yuan/m³.

Key words: refinery special wastewater, electrochemical oxidation, biodegradability, COD, ammonia nitrogen

吴潮汉郭晓培李阳. 炼化特殊污水强化预处理技术工业试验[J]. 石油炼制与化工, 2022, 53(3): 110-116.

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