长北中央处理厂甲醇回收系统污水处理方法研究与应用
摘要
本文首先对现用的污水处理系统运行情况进行分析,实验数据表明,在污水处理单元各个处理设备的运行效果如下：三相分离器的运行效果相对较差；缓冲罐、沉降罐的运行效果相对较好；一级过滤器、二级过滤器的运行效果相对较差；三级过滤器的运行效果相对较好；精馏塔运行效果极差。在现有的水质、加药装置和处理工艺流程条件下,必然导致含油含醇污水预处理效果很差,无法达到预处理的目的；必须对现有的处理工艺流程和相应的处理设备进行改造。
在确保含油含醇污水预处理效果的基础上,结合长北处理厂的发展规模,尽可能地简化处理工艺,降低投资,保证长北天然气处理厂的安全、长期、稳定运行；对工艺流程主要改进为：在污水处理工艺流程中设计了两具400m3的污水储罐,对转入的污水进行均质、稳定、储存、沉降,降低污水中的含油量和悬浮固体含量,保证水质水量稳定；加入调整剂,提高污水的pH值,并将污水中的二价铁离子氧化成三价铁离子,有利于污水中铁离子的有效去除；增加石英砂过滤器的,对污水中残留的油、悬浮固体颗粒絮体进行截留,确保一级过滤器能够长期、稳定运行。
改进后工艺流程运行结果表明：新污水处理系统达到了预期目标,处理后污水总铁含量,悬浮物、含油量等都大大降低,其中悬浮固体含量平均为8.31 mg/L,含油量平均为33.68mg/L,甲醇含量为0.36%。
This paper analyzes the existing sewage treatment system used in the operation of the experimental data show that:the operation of three-phase separator to be less effective; buffer tank, settlement tank run effect is relatively good; a filter, secondary filter relatively poor operating results; three filters running effect is relatively good; distillation poor operating results. In the existing water quality, dosing devices and process flow conditions, will inevitably lead to pre-oil with alcohol effects of poor water, can not achieve the purpose of pretreatment; to the existing treatment process and the corresponding transform processing equipment.
This results in ensuring that sewage pretreatment, based on the length of the north treatment plant with the scale of development, treatment process as simple as possible, reducing investment and ensure long-North gas processing plant security, long-term, stable operation, This major improvement on the process as follows:the sewage treatment process in the size of the installation of two sewage storage tank 400m3, to ensure that the sewage into the homogeneous, stable, storage, the role of settlement, thereby reducing the oil content of effluent and suspended solids to ensure the stability of water quality and quantity; adding modifiers to improve the effluent pH, and water in the oxidation of ferrous ion into ferric ion, is conducive to the effective sewage removal of iron; increase quartz sand filter, the residual oil on the water, suspended solid particles floes were retained, to ensure that a filter can be long-term, stable operation.
The improved process operation results show that:the new sewage treatment system to achieve the expected goal, the total iron content of treated sewage, suspended solids, and so greatly reduce the oil content, which suspended solids content was 8.31 mg/L, the average oil content of 33.68mg/L,0.36% methanol content
在确保含油含醇污水预处理效果的基础上,结合长北处理厂的发展规模,尽可能地简化处理工艺,降低投资,保证长北天然气处理厂的安全、长期、稳定运行；对工艺流程主要改进为：在污水处理工艺流程中设计了两具400m3的污水储罐,对转入的污水进行均质、稳定、储存、沉降,降低污水中的含油量和悬浮固体含量,保证水质水量稳定；加入调整剂,提高污水的pH值,并将污水中的二价铁离子氧化成三价铁离子,有利于污水中铁离子的有效去除；增加石英砂过滤器的,对污水中残留的油、悬浮固体颗粒絮体进行截留,确保一级过滤器能够长期、稳定运行。
改进后工艺流程运行结果表明：新污水处理系统达到了预期目标,处理后污水总铁含量,悬浮物、含油量等都大大降低,其中悬浮固体含量平均为8.31 mg/L,含油量平均为33.68mg/L,甲醇含量为0.36%。
This paper analyzes the existing sewage treatment system used in the operation of the experimental data show that:the operation of three-phase separator to be less effective; buffer tank, settlement tank run effect is relatively good; a filter, secondary filter relatively poor operating results; three filters running effect is relatively good; distillation poor operating results. In the existing water quality, dosing devices and process flow conditions, will inevitably lead to pre-oil with alcohol effects of poor water, can not achieve the purpose of pretreatment; to the existing treatment process and the corresponding transform processing equipment.
This results in ensuring that sewage pretreatment, based on the length of the north treatment plant with the scale of development, treatment process as simple as possible, reducing investment and ensure long-North gas processing plant security, long-term, stable operation, This major improvement on the process as follows:the sewage treatment process in the size of the installation of two sewage storage tank 400m3, to ensure that the sewage into the homogeneous, stable, storage, the role of settlement, thereby reducing the oil content of effluent and suspended solids to ensure the stability of water quality and quantity; adding modifiers to improve the effluent pH, and water in the oxidation of ferrous ion into ferric ion, is conducive to the effective sewage removal of iron; increase quartz sand filter, the residual oil on the water, suspended solid particles floes were retained, to ensure that a filter can be long-term, stable operation.
The improved process operation results show that:the new sewage treatment system to achieve the expected goal, the total iron content of treated sewage, suspended solids, and so greatly reduce the oil content, which suspended solids content was 8.31 mg/L, the average oil content of 33.68mg/L,0.36% methanol content
引文
[1]王良均,吴孟周.石油化工废水处理设计手册[M].北京：中国石化出版社,1996：24-25.
[2]邓波,祝威.生化法处理高温高盐油田采出水[J].中国给水排水,2003,19(4)：76-78.
[3]陈进富,吴芳云,闰健勇等.国外采油污水处理技术的新进展[[J].油气田环境保护,2000,10(2)：19-21.
[4]Cheryan M,Rajagopalan N.Membrane processing of oily streams. Wastewater treatmentand waste reduction[J]. Membr Sci,1998,151(1):13-28.
[5]Hjelmasst. Aetal.Produced water reinjection:experiences from performance measurementson lain the North Sea [C]. Presented at the international conference on Health, Safety&Environment, New or leans Louisiana, USA,1996.
[6]高明霞,张劲.油田采出水达标外排处理技术[J].国外油田工程,2005,21(1)：39-42.
[7]陈进富.油田采出水处理技术与进展[J].环境工程,2000,18(1)：18-20.
[8]王承智,石荣.含油污水处理方法综述[J].辽宁师专学报,2002,4(1)：104-108.
[9]Gilbert T. Tellez, N. Nirmalakhandan and Jorge L. Gardea-Torresdey. Performanceevaluation of an activated sludge system for removing petroleum hydrocarbons from oil fieldproduced water. Advances in Environmental Research,2002,6(4):455-470.
[10]吴刚,常春梅,纪常杰.去除采出水中有机物的例证[J].国外油田工程,2002,18(5)：18-21.
[11]Elmaleh S,Ghaffor.Cross-flow OF of hydrocarbon and biological solid mixed suspension.NJ of Membrane Sci,1996,118(1):111-120.
[12]隋智慧,秦煌民.油水分离技术的研究进展[J].油气田地面工程,2002,11(6)：115-116.
[13]康万利,孙春柳.油田乳状液破乳方法研究进展[J].管道技术与设备,2006,(2)：1-4.
[14]生物膜法污水处理技术[M].建设部科技司,2000：30-31.
[15]李杰.难降解有机物的生物处理技术进展[J],环境科学与技术,2005,28：187-189.
[16]程丽华,钟华文,谢文玉.炼油污水处理生物填料的选择与优化研究[J].环境污染治理技术与设备,2006,(5)：90-92.
[17]孙娜,林波,李风琴.水处理填料的研究进展[J].江西化工,2005,(04)：8-10.
[18]张杰,曹开朗.城市污水处理与资源可持续利用[J].中国给水排水,2001,17(3)：20-21.
[19]Ismail Serageldin.Water Resources Management.1995,20(1):15-21.
[20]张杰,曹相生,孟雪征.曝气生物滤池的研究进展[J].中国给水排水,2002,18(8)：26-29.
[21]郑俊等.曝气生物滤池污水处理新技术及工程实例[M].北京化学工业出版社,2002：58-63.
[22]谢磊,胡勇有,仲海涛.含油污水处理技术进展[J].工业水处理,2001,7(7)：43-47.
[23]Pujol R,Hamon M,Kandel X.Biofilters:flexible,reliable biological reactor [J].Wat. Sci.Tech.1999.29(10-11):33-38.
[24]S.Adachi and YFuchu.Reclamation and Reuse of Wastewater by Biological Aeraed Filter Process. Wat. Sci.Tech.2001,24(9):195-204.
[25]李汝琪.污水处理新技术-BAFSR曝气生物滤池[J].中国环保产业.1999,12：38-39.
[26]陈进富,黄军荣,吴芳云等.油田采油污水的CODCr构成分析[J].工业水处理,2002,22(8)：29-31.
[27]沈耀良,黄勇.固定化微生物污水处理技术[M].化学工业出版社,2002：64-65.
[2]邓波,祝威.生化法处理高温高盐油田采出水[J].中国给水排水,2003,19(4)：76-78.
[3]陈进富,吴芳云,闰健勇等.国外采油污水处理技术的新进展[[J].油气田环境保护,2000,10(2)：19-21.
[4]Cheryan M,Rajagopalan N.Membrane processing of oily streams. Wastewater treatmentand waste reduction[J]. Membr Sci,1998,151(1):13-28.
[5]Hjelmasst. Aetal.Produced water reinjection:experiences from performance measurementson lain the North Sea [C]. Presented at the international conference on Health, Safety&Environment, New or leans Louisiana, USA,1996.
[6]高明霞,张劲.油田采出水达标外排处理技术[J].国外油田工程,2005,21(1)：39-42.
[7]陈进富.油田采出水处理技术与进展[J].环境工程,2000,18(1)：18-20.
[8]王承智,石荣.含油污水处理方法综述[J].辽宁师专学报,2002,4(1)：104-108.
[9]Gilbert T. Tellez, N. Nirmalakhandan and Jorge L. Gardea-Torresdey. Performanceevaluation of an activated sludge system for removing petroleum hydrocarbons from oil fieldproduced water. Advances in Environmental Research,2002,6(4):455-470.
[10]吴刚,常春梅,纪常杰.去除采出水中有机物的例证[J].国外油田工程,2002,18(5)：18-21.
[11]Elmaleh S,Ghaffor.Cross-flow OF of hydrocarbon and biological solid mixed suspension.NJ of Membrane Sci,1996,118(1):111-120.
[12]隋智慧,秦煌民.油水分离技术的研究进展[J].油气田地面工程,2002,11(6)：115-116.
[13]康万利,孙春柳.油田乳状液破乳方法研究进展[J].管道技术与设备,2006,(2)：1-4.
[14]生物膜法污水处理技术[M].建设部科技司,2000：30-31.
[15]李杰.难降解有机物的生物处理技术进展[J],环境科学与技术,2005,28：187-189.
[16]程丽华,钟华文,谢文玉.炼油污水处理生物填料的选择与优化研究[J].环境污染治理技术与设备,2006,(5)：90-92.
[17]孙娜,林波,李风琴.水处理填料的研究进展[J].江西化工,2005,(04)：8-10.
[18]张杰,曹开朗.城市污水处理与资源可持续利用[J].中国给水排水,2001,17(3)：20-21.
[19]Ismail Serageldin.Water Resources Management.1995,20(1):15-21.
[20]张杰,曹相生,孟雪征.曝气生物滤池的研究进展[J].中国给水排水,2002,18(8)：26-29.
[21]郑俊等.曝气生物滤池污水处理新技术及工程实例[M].北京化学工业出版社,2002：58-63.
[22]谢磊,胡勇有,仲海涛.含油污水处理技术进展[J].工业水处理,2001,7(7)：43-47.
[23]Pujol R,Hamon M,Kandel X.Biofilters:flexible,reliable biological reactor [J].Wat. Sci.Tech.1999.29(10-11):33-38.
[24]S.Adachi and YFuchu.Reclamation and Reuse of Wastewater by Biological Aeraed Filter Process. Wat. Sci.Tech.2001,24(9):195-204.
[25]李汝琪.污水处理新技术-BAFSR曝气生物滤池[J].中国环保产业.1999,12：38-39.
[26]陈进富,黄军荣,吴芳云等.油田采油污水的CODCr构成分析[J].工业水处理,2002,22(8)：29-31.
[27]沈耀良,黄勇.固定化微生物污水处理技术[M].化学工业出版社,2002：64-65.