印染企业废水分质处理及再生利用工程设计
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摘要
对某印染厂生产废水采用分质处理模式。工程设计处理能力为3 300 m~3/d,其中印染混合废水3 000 m~3/d(含棉和涤纶染色与后整理)、碱减量工艺废水300 m~3/d。印染混合废水和碱减量工艺废水分类收集,分质处理。印染混合废水处理采用UASB/接触氧化组合技术,碱减量废水处理工艺为酸析/铁碳还原/一级生化/光催化氧化/二级生化。再生工艺为臭氧气浮(DOIF)和旁路RO膜组合工艺。运行结果表明,出水水质达到《纺织染整工业水污染物排放标准》(GB4287—2012)的新建企业间接排放标准,再生水水质达到《纺织染整工业废水治理工程技术规范》(HJ 471—2009)中的漂洗和染色回用水标准。企业印染废水再生利用率达到52%,再生水量为52.8×10~4m~3/a。该项目运行费用低、回用率高,可为印染废水处理与再生设计提供借鉴。
A new source separated treatment process was used to treat and reclaim the printing and dyeing wastewater with treatment capacity as 3 300 m~3/d( synthetic wastewater 3 000 m~3/d and alkali decrement wastewater 300 m~3/d). The printing and dyeing wastewater and alkali decrement wastewater were collected and treated separately. The synthetic wastewater treatment project adopts UASB and contact oxidation process. The alkali decrement wastewater treatment adopts the combined process of acidification,iron carbon reduction,first bio-treatment,photo catalytic oxidation and second bio-treatment.The reclaimed water was treated via the process of dual-step ozone induced flotation( DOIF) and side stream RO. The operation results showed that the secondary effluent quality could meet the indirect discharged standard for new constructed industry of Discharge Standards of Waster Pollutants for Dyeing and Finishing of Textile Industry( GB 4287-2012). The reclaimed water meet the requirement of washing and dyeing reuse for Waste Water Treatment Project Technical Specification for Dyeing and Finishing of Textile Industry( HJ 471-2009). The printing and dyeing water reuse rate is 52%. It reliably supplied reclaimed water 528 thousands m~3/a. Due to its low operation cost and higher wastewater reuse rate,the project could provide valuable information for design and operation of similar projects.
A new source separated treatment process was used to treat and reclaim the printing and dyeing wastewater with treatment capacity as 3 300 m~3/d( synthetic wastewater 3 000 m~3/d and alkali decrement wastewater 300 m~3/d). The printing and dyeing wastewater and alkali decrement wastewater were collected and treated separately. The synthetic wastewater treatment project adopts UASB and contact oxidation process. The alkali decrement wastewater treatment adopts the combined process of acidification,iron carbon reduction,first bio-treatment,photo catalytic oxidation and second bio-treatment.The reclaimed water was treated via the process of dual-step ozone induced flotation( DOIF) and side stream RO. The operation results showed that the secondary effluent quality could meet the indirect discharged standard for new constructed industry of Discharge Standards of Waster Pollutants for Dyeing and Finishing of Textile Industry( GB 4287-2012). The reclaimed water meet the requirement of washing and dyeing reuse for Waste Water Treatment Project Technical Specification for Dyeing and Finishing of Textile Industry( HJ 471-2009). The printing and dyeing water reuse rate is 52%. It reliably supplied reclaimed water 528 thousands m~3/a. Due to its low operation cost and higher wastewater reuse rate,the project could provide valuable information for design and operation of similar projects.
引文
[1]吕志园,朱和林,曹杰.碱减量印染废水处理工程实例[J].印染,2014,(11):29-30,47.
[2]吴晓东.含碱减量废水的纺织印染废水处理工程实例[J].中国给水排水,2014,30(4):70-72.
[3]刘伟京,张龙,吴伟,等.GC-MS用于分析印染废水处理中有机污染物的降解及迁移的研究[J].环境科学,2010,31(4):1008-1013.
[4]Jin X,Jin P,Wang X.A study on the effects of ozone dosage on dissolved-ozone flotation(DOF)process performance[J].Water Sci Technol,2015,71(9):1423-1428.
[5]曹咏,肖利平,吕仪婧.UASB反应器降解活性染料废水的特性[J].环境工程学报,2013,7(10):3773-3778.
[6]杨期勇,杨涛,陈季华.碱减量废水对苯二甲酸回收工艺的影响因素[J].印染,2010,(2):30-33.
[7]Zheng X,Zhang Z,Yu D,et al.Overview of membrane technology applications for industrial wastewater treatment in China to increase water supply[J].Resour,Conserv Recycl,2015,105:1-10.
[8]Chen Z,Wu Q,Wu G,et al.Centralized water reuse system with multiple applications in urban areas:Lessons from China’s experience[J].Resour,Conserv Recycl,2017,117:125-136.
[2]吴晓东.含碱减量废水的纺织印染废水处理工程实例[J].中国给水排水,2014,30(4):70-72.
[3]刘伟京,张龙,吴伟,等.GC-MS用于分析印染废水处理中有机污染物的降解及迁移的研究[J].环境科学,2010,31(4):1008-1013.
[4]Jin X,Jin P,Wang X.A study on the effects of ozone dosage on dissolved-ozone flotation(DOF)process performance[J].Water Sci Technol,2015,71(9):1423-1428.
[5]曹咏,肖利平,吕仪婧.UASB反应器降解活性染料废水的特性[J].环境工程学报,2013,7(10):3773-3778.
[6]杨期勇,杨涛,陈季华.碱减量废水对苯二甲酸回收工艺的影响因素[J].印染,2010,(2):30-33.
[7]Zheng X,Zhang Z,Yu D,et al.Overview of membrane technology applications for industrial wastewater treatment in China to increase water supply[J].Resour,Conserv Recycl,2015,105:1-10.
[8]Chen Z,Wu Q,Wu G,et al.Centralized water reuse system with multiple applications in urban areas:Lessons from China’s experience[J].Resour,Conserv Recycl,2017,117:125-136.