Anaerobic–aerobic treatment of purified terephthalic acid (PTA) effluent; a techno-economic alternative to two-stage aerobic process

2007 ◽  
Vol 85 (4) ◽  
pp. 1024-1033 ◽  
Author(s):  
G.R. Pophali ◽  
R. Khan ◽  
R.S. Dhodapkar ◽  
T. Nandy ◽  
S. Devotta
Keyword(s):  
Terephthalic Acid ◽  
Aerobic Treatment ◽  
Two Stage ◽  
Aerobic Process ◽  
Purified Terephthalic Acid

Purified Terephthalic Acid Wastewater Treatment Using Modified Two-Stage UASB Bioreactor Systems

2020 ◽  
Vol 77 (6) ◽  
pp. 1081-1088
Author(s):  
Tayyibe Alpay ◽  
Burcin Karabey ◽  
Nuri Azbar ◽  
Guven Ozdemir
Keyword(s):  
Wastewater Treatment ◽  
Terephthalic Acid ◽  
Two Stage ◽  
Purified Terephthalic Acid

Two-stage anaerobic treatment of purified terephthalic acid production wastewaters

2000 ◽  
Vol 42 (5-6) ◽  
pp. 277-282 ◽  
Author(s):  
J.C. Young ◽  
I.S. Kim ◽  
I.C. Page ◽  
D.R. Wilson ◽  
G.J. Brown ◽  
...  
Keyword(s):  
Terephthalic Acid ◽  
Phthalic Acid ◽  
Contact Process ◽  
Treatment Plant ◽  
Anaerobic Treatment ◽  
Stable Operation ◽  
Production Facility ◽  
Two Stage ◽  
Phthalic Acids ◽  
Purified Terephthalic Acid

A full-scale two-stage anaerobic treatment plant has been treating the wastewaters from a purified terephthalic acid (PTA) production facility in South Korea for over 4 years. A study was conducted to evaluate the performance characteristics of this system over a 17-month period of operation. The system has provided stable operation with COD removals consistently averaging over 90%. The removal of specific phthalic acid isomers and related chemicals has been essentially 100% except for terephthalic acid which has averaged about 90% and paratoluic acid which had only about 30% removal. About 80% of the removal occurred in the first stage of the two-stage hybrid process. A companion single-stage anaerobic contact process removed only 80 to 85% of the COD and only 35 to 67% of the phthalic acids.

Anaerobic-Aerobic Treatment of Industrial Wastewater

1988 ◽  
Vol 20 (4-5) ◽  
pp. 189-198 ◽  
Author(s):  
H. Bode
Keyword(s):  
Experimental Work ◽  
Industrial Wastewater ◽  
Sugar Industry ◽  
Anaerobic Treatment ◽  
Full Scale ◽  
The Other ◽  
Aerobic Treatment ◽  
Industrial Wastewaters ◽  
Pulp Industry ◽  
Aerobic Process

The paper evaluates the question of whether a combined anaerobic-aerobic or a solely aerobic treatment of some particular industrial wastewaters leads to better results. Therefore three different industrial wastewaters were treated in two different process lines: one line consisted of anaerobic treatment prior to aerobic treatment and in the other, only aerobic treatment was applied. The experiments were run with wastewater from:–the pectin industry–the sugar industry (beet sugar)–the animal pulp industry. The data presented in this paper were gained from experimental work which was conducted over a period of two years. Different scales of treatment plants were used. The anaerobic treatment was done in full- and semitechnical scale reactors, while the aerobic treatment took place in labscale and semitechnical scale plants. Surprisingly in all three cases the solely aerobic treatment led to slightly better results in terms of residual pollution. Finally the paper presents data gained from a recently built, full-scale anaerobic-aerobic process which treats pectin waste. The aerobic stage of the process was designed on the basis of the results from the experimental work which was mentioned above. The results from the former experimental work and from the full-scale operation are compared.

Research and Application of Extension CBR Fault Diagnosis Method for Process Production

2011 ◽  
Vol 467-469 ◽  
pp. 389-394
Author(s):  
Yuan Xu ◽  
Qun Xiong Zhu ◽  
Yan Qing Wang
Keyword(s):  
Fault Diagnosis ◽  
Terephthalic Acid ◽  
Formal Model ◽  
Solvent System ◽  
Basic Element ◽  
Extension Theory ◽  
Case Description ◽  
Work Efficiency ◽  
Diagnosis Method ◽  
Purified Terephthalic Acid

To enhance the work efficiency and systematization degree of fault diagnosis for process production, an extension CBR fault diagnosis (ECFD) method is proposed in which the extension theory applies the formal model to expand the possibility of matter and explore the innovative principle, and the CBR technology provides the ways for solution based on the historical experiences. Considering the characters of the two technologies, some researches are made on the extension basic-element case-description, distance-based extension case-retrieval, and character difference-based extension case-revision for fault diagnosis. Taking the purified terephthalic acid (PTA) solvent system as an application example for fault diagnosis, the ECFD method is proved to be feasible and effective, which provides a new way for diagnosing the production faults accurately.

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