Removal of organic compounds of real textile dyeing wastewater by pilot scale combination process of anoxic baffled reactor-hybrid membrane bioreactor

2010 ◽  
Vol 5 (2) ◽  
Author(s):  
Z. S. Yan ◽  
S. H. Wang ◽  
X. K. Kang ◽  
Y. Ma
Keyword(s):  
Membrane Bioreactor ◽  
Pilot Scale ◽  
Hybrid Membrane ◽  
Dyeing Wastewater ◽  
Toxic Compounds ◽  
Combination Process ◽  
Hydrolysis Process ◽  
Textile Dyeing ◽  
Final Effluent ◽  
Textile Dyeing Wastewater

A pilot-scale combination process of anoxic baffled reactor -hybrid membrane bioreactor for the real textile dyeing wastewater treatment was investigated. Anoxic baffled reactor as a hydrolysis process pre-treatment was performed well, which achieved 35.6 % COD removal efficiency when hydraulic retention time (HRT) was 16 h. The total COD removal efficiency of the combined process was 83.8 %. GC-MS analysis results demonstrated that the main component of raw influent was alkanes including 13 types. After hydrolysis process, the types of alkanes decreased to 5. In subsequent aerobic treatment phase, alkanes of supernatant of HMBR increased to 19, but total organic compounds category decreased to 24. New intermediate CholestaN-3β-ol production demonstrated that some complicated structures or large molecules substances in raw wastewater could be decomposed. GC-MS quantitative analysis results further showed that some toxic and hazardous substances, such as toluene, styrene, 1,2-dichlorobenzene were still in the final effluent. However toxic compounds e.g. phenols could be removed in the subsequent aerobic process. Therefore, most organic pollutants could be removed using the combined process. There were still some amounts of toxic compounds present in the final effluent.

Design and testing of a pilot scale magnetic separator for the treatment of textile dyeing wastewater

2018 ◽  
Vol 218 ◽  
pp. 562-568 ◽  
Author(s):  
Tobías Salinas ◽  
Ignacio Durruty ◽  
Lorena Arciniegas ◽  
Gustavo Pasquevich ◽  
Matías Lanfranconi ◽  
...  
Keyword(s):  
Pilot Scale ◽  
Dyeing Wastewater ◽  
Magnetic Separator ◽  
Textile Dyeing ◽  
Design And Testing ◽  
Textile Dyeing Wastewater

The performance and microbial diversity of a membrane bioreactor treating with the real textile dyeing wastewater

2006 ◽  
Vol 1 (3) ◽  
Author(s):  
S. J. You ◽  
D. H. Tseng ◽  
C. C. Liu ◽  
S. H. Ou ◽  
H. M. Chien
Keyword(s):  
Microbial Diversity ◽  
Textile Industry ◽  
Membrane Bioreactor ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Dyeing Wastewater ◽  
Textile Dyeing ◽  
Molecular Biotechnology ◽  
Major Industry ◽  
Textile Dyeing Wastewater

The textile industry, which produces toxic and low biodegradable wastewater, is a major industry of Taiwan. Thus, this study compared the performance of the membrane bioreactor (MBR) and sequencing batch reactor (SBR) process for treating real textile dyeing wastewater. The microbial diversity of the MBR process was also identified by a combined culturing method and molecular biotechnology. The results show that the removal efficiencies for color, COD, BOD, and SS with the MBR process were 54, 79, 99, and 100%, respectively, all higher than the corresponding parameters for the SBR process: 51, 70, 96, and 60%. All the above four parameters for the MBR effluent meet the criteria of the Taiwan EPA, while on the other hand for the SBR process, only color and COD meet the Taiwan EPA effluent criteria. Furthermore, the genus Microbacterium, especially the Microbacterium aurum, was the most predominant population, contributing 70.6% of the total isolates, and might be responsible for the degradation of the dyeing wastewater. Another two textile dyeing degradation bacteria, Paenibacillus azoreducens and Bacillus sp., as predominant bacteria in MBR sludge, were also observed.

scholarly journals Photocatalytic Degradation of Textile Dyeing Wastewater Using Titanium Dioxide and Zinc Oxide

2008 ◽  
Vol 5 (2) ◽  
pp. 219-223 ◽  
Author(s):  
Abbas J. Attia ◽  
Salih H. Kadhim ◽  
Falah H. Hussein
Keyword(s):  
Activation Energy ◽  
Zinc Oxide ◽  
Titanium Dioxide ◽  
Photocatalytic Degradation ◽  
Irradiation Time ◽  
Effect Of Temperature ◽  
Dyeing Wastewater ◽  
Textile Dyeing ◽  
Textile Factory ◽  
Textile Dyeing Wastewater

Photodegradation of a real textile dyeing wastewater taken from Hilla textile factory in Babylon Governorate, Iraq have been investigated. Photocatalytic degradation was carried out over suspensions of titanium dioxide or zinc oxide under ultraviolet irradiation. Photodegradation percentage was followed spectrophometrically by the measurements of absorbance at λmax equal to 380 nm. The rate of photodegradation increased linearly with time of irradiation when titanium dioxide or zinc oxide was used. A maximum color removal of 96% was achieved after irradiation time of 2.5 hours when titanium dioxide used at 303K and 82% color reduction was observed when zinc oxide used for the same period and at the same temperature. The effect of temperature on the efficiency of photodegradation of dyestuff was also studied. The activation energy of photodegradation was calculated and found to be equal to 21 ± 1 kJ mol-1 on titanium dioxide and 24 ± 1 kJ mol-1 on zinc oxide.

scholarly journals Iron-Manganese Bimetallic-Organic Framework as A Photocatalyst for Degradation of Rhodamine B Organic Dye Under Visible Light

2021 ◽  
Vol 16 (4) ◽  
pp. 916-924
Author(s):  
Tran Thi Kim Ngan ◽  
Tran Bich Thuy ◽  
Lam Van Tan ◽  
Trung Thanh Nguyen
Keyword(s):  
Rhodamine B ◽  
Diffuse Reflectance Spectroscopy ◽  
Partial Replacement ◽  
Thermal Method ◽  
Dyeing Wastewater ◽  
Organic Pigment ◽  
Oxidizing Agents ◽  
Textile Dyeing ◽  
Textile Dyeing Wastewater ◽  
Organic Framework

In recent years, there have been many research works on use of different methods to treat textile dyeing wastewater such as mechanical, biological and chemical methods (using oxidizing agents, such as: H2O2, O3, and H2O2/O3). However, some traditional textile dyeing wastewater treatment methods such as mechanical and biological methods have limitations in treating these pollutants thoroughly. To enhance the treatment efficiency, the use of photocatalysts combination with strong oxidizing agents, such as H2O2, has been extensively developed in recent years. In this study, the iron-centred bimetallic organic framework Fe-MOF has been synthesized by partial replacement of Fe3+ ions with Mn metal ions by solvent-thermal method. The analytical methods used to evaluate the structural characterization of the as-synthesized materials including Scanning Electron Microscope (SEM), Brunaurer-Emmett-Teller (BET), X-ray Diffraction (XRD), Fourier Transform Infra Red (FT-IR), and UV-Vis Diffuse Reflectance Spectroscopy (DRS). The experiments on the decomposition of organic pigment Rhodamine B were performed under varying conditions of pH, catalyst mass and RhB colorant concentration. Experiments with different electron capturers indicate that h+ plays a major role in the photochemical degradation of RhB. The stability and durability of the 0.1 Mn/Fe-MOF catalyst were evaluated through the leaching and recycle experiments, showing that the RhB degradation efficiency of the photocatalyst decreased modestly after five repetitions. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 

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