天然气净化厂有机胺废水有机物降解工艺研究
Study on degradation process of organic matter in organic amine wastewater from natural gas purification plant
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- 引用格式:
-
李丽,严紫含,金艳,肖华.天然气净化厂有机胺废水有机物降解工艺研究[J].天然气与石油,2022,40(2):98-102.doi:10.3969/j.issn.1006-5539.2022.01.015
LI Li, YAN Zihan, JIN Yan, XIAO Hua.Study on degradation process of organic matter in organic amine wastewater from natural gas purification plant[J].Natural Gas and Oil,2022,40(2):98-102.doi:10.3969/j.issn.1006-5539.2022.01.015
- DOI:
- 10.3969/j.issn.1006-5539.2022.01.015
- 作者:
- 李丽1 严紫含2 金艳3 肖华2
LI Li1, YAN Zihan2, JIN Yan3, XIAO Hua2
- 作者单位:
- 1. 华东理工大学国家盐湖资源综合利用工程技术研究中心, 上海 200237; 2. 中国石油工程建设有限公司西南分公司, 四川 成都 610041; 3. 苏州聚智同创环保科技有限公司, 江苏 常熟 215513
1. National Engineering Research Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai,200237, China; 2. CPECC Southwest Company, Chengdu, Sichuan,610041, China; 3. Suzhou Synovo Green Tech Co., Ltd., Changshu, Jiangsu,215513, China
- 关键词:
- 电催化氧化;生化氧化;可生化性;纳管标准
Electrocatalytic oxidation; Biochemical oxidation; Biodegradability; Standards of the management
- 摘要:
- 为解决天然气净化厂尾气脱硫工艺中产生的树脂再生废液有机物含量高、可生化性差的问题，采用电催化氧化+生化氧化组合工艺,得到电催化氧化系统最优工艺参数在反应时间2 h、pH 3~5、10%双氧水投加量8.75 mL/L、电流密度10 mA/cm2时,化学需氧量(Chemical Oxygen Demand,COD)的去除率可达到53.2%,生化需氧量(Biochemical Oxygen Demand,BOD)与COD比值从0.05提高至0.21;经生化氧化工艺处理后COD去除率可稳定在50%,出水COD和总氮浓度分别可降至200 mg/L、50 mg/L以内,产水符合纳管标准。研究结果可为天然气净化厂处理有机胺废水提供借鉴。
The resin regeneration waste liquid produced in the tail gas desulfurization process of natural gas purification plants has the characteristics of high organic content and poor biodegradability. In this paper, the integrated process of “electrocatalytic oxidation and biochemical oxidation” was investigated. The optimal process parameters of the electrocatalytic oxidation system were determined as that the reaction time was 2 h, pH was 3~5, the dosage of 10% hydrogen peroxide 8.75 mL/L, current density 10 mA/cm2. Under the optimal operating conditions, the COD(Chemical Oxygen Demand) removal rate can reach 53.2%, and the BOD(Biochemical Oxygen Demand)/COD ratio can be increased from 0.05 to 0.21. InAfter the biochemical oxidation process, the COD removal rate can be kept at 50%, and the effluent concentration of chemical oxygen demand and total nitrogen can be reduced to within 200 mg/L and 50 mg/L respectively, which meets the management standards. The study can provide reference for the treatment of organic amine wastewater in natural gas purification plants.
