The effect of pre-ozonation on the H2O2/UV-C treatment of raw and biologically pre-treated textile industry wastewater

2002 ◽  
Vol 45 (12) ◽  
pp. 297-304 ◽  
Author(s):  
Í Arslan Alaton ◽  
I.A. Balcıog
Keyword(s):  
Removal Efficiency ◽  
Textile Industry ◽  
Textile Wastewater ◽  
Chemical Oxidation ◽  
Treated Wastewater ◽  
Average Increase ◽  
Toc Removal ◽  
Uv C ◽  
Ozonation Process ◽  
Industry Wastewater

Advanced chemical oxidation of raw and biologically pretreated wastewater by ozonation, H2O2/UV-C treatment and the successive combination of ozonation and H2O2/UV-C oxidation was investigated. For the raw textile wastewater, the application of successive O3 + H2O2/UV-C oxidation enhanced the COD and TOC removal efficiency of the H2O2 (50mM)/UV-C process by a factor of 13 and 4, respectively. In case of the biotreated textile wastewater, the preliminary ozonation step increased COD removal of the H2O2(10mM)/UV-C treatment system from 15% to 62%, and TOC removal from 0% to 34%, but did not appear to be more effective than applying a single ozonation process in terms of TOC abatement rates. Enhancement of the biodegradability was more pronounced for the biologically pre-treated wastewater with a two fold average increase in the BOD5/COD ratio for the studied chemical oxidation systems.

scholarly journals Study of Steel Slag Filter Unit as a Secondary Treatment System for Removing Total Phosphorus from Textile Industry Wastewater

2021 ◽  
Vol 13 (3) ◽  
Author(s):  
Nur Ain Nazirah Mohd Arshad ◽  
◽  
R. Hamdan ◽  
Keyword(s):  
Removal Efficiency ◽  
Total Phosphorus ◽  
Phosphorus Removal ◽  
Textile Industry ◽  
High Efficiency ◽  
Steel Slag ◽  
Industrial Effluent ◽  
Textile Wastewater ◽  
Secondary Stage ◽  
Industry Wastewater

Eutrophication is one of the global concerned due to algae bloom in the natural surface water such as lakes and swamp area. Industrial effluent with incomplete treatment discharged has become one of the main culprits to this phenomenon. Approximately, 0.3 – 13 mg/L of total phosphorus can be found in the final discharge of industrial effluent showing that the existing treatment including an activated carbon filter (ACF) has limitation in polishing the phosphorus. Therefore, this 16 week of study has been designed to study the alternative treatment phosphorus removal at secondary stage to replace the tertiary treatment by using steel manufacturing by-product as filter media for effective phosphorus removal from the textile industry wastewater. Two units of lab-scale vertical steel slag filter (SSF) systems under aerated and unaerated conditions have been developed for this study. The samples were collected and analysed biweekly for selected parameters including pH, alkalinity, DO and TP. The results obtained from this study show that the unaerated steel slag filter has a high efficiency of TP removal which ranged from 46% to 70% compared to the aerated SSF with removal efficiency ranged from 37% to 66%. Besides, the existing ACF removal efficiency was ranged from 36% to 54%. Thus, the use of steel slag in removing phosphorus from textile wastewater is possible with the used of both aerated and unaerated steel slag filter systems. Furthermore, the removal mechanism involved was likely to be precipitation and adsorption.

scholarly journals Performances of Anoxic- Aerobic Membrane Bioreactors for The Treatment of Real Textile Wastewater

2019 ◽  
Keyword(s):  
Bacterial Communities ◽  
Textile Industry ◽  
Textile Wastewater ◽  
Pilot Scale ◽  
Membrane Bioreactors ◽  
Color Removal ◽  
Toc Removal ◽  
Recycle Ratio ◽  
Operation Period ◽  
The Impact

<p>Wastewater from textile industry is considered one of the major environmental challenges due to the large volume of highly colored, polluted and toxic effluent. This study investigated the treatability of real textile wastewater by pilot-scale anoxic-aerobic Membrane Bioreactor (MBR) system without sludge wasting for operation period of 100 days. The proposed system was investigated under different Internal Recycle (IR) ratios and the impact of IR ratio on Total Organic Carbon (TOC), Total Nitrogen (TN) and Color removals were examined. Under IR ratios between anoxic and aerobic tanks of 0.0, 0.5 and 2.0, the respective average removal efficiency of TN was 20.9%,53.4% and 71.7%, whereas average color removal of 81%, 85% and 88%, respectively was noted. The results indicated that increase of recycle ratio from 0.5 to 2.0 enhanced TN removal to about 71% and color removal to above 85%. The IR between anoxic and aerobic tanks has a significant role in TN and color removal due its effect on the development of bacterial communities. On the other hand, the results indicate over 93% TOC removal, which was independent of IR ratio.</p>

scholarly journals Discoloration and mineralization of a textile azo dye using a hybrid UV/O3/SBR process

2021 ◽  
Vol 11 (10) ◽  
Author(s):  
Hakimeh Mahdizadeh ◽  
Yousef Dadban Shahamat ◽  
Susana Rodríguez-Couto
Keyword(s):  
Textile Industry ◽  
Advanced Oxidation Processes ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Synthetic Dyes ◽  
Oxidation Processes ◽  
Toc Removal ◽  
Reactive Red 198 ◽  
Water And Wastewater ◽  
Ozonation Process

AbstractMost synthetic dyes are toxic and hardly biodegradable compounds that enter the environment mainly through the discharged of non-treated textile industry effluents. The present study investigated the removal of the textile monoazo dye Reactive Red 198 (RR-198) from aqueous solutions using the ultraviolet light and ozonation alone and in combination (i.e., UV/O3) followed by a Sequencing Batch Reactor (SBR). The pH (5 ≤ pH ≤ 9) and dye initial concentration (50–300 mg/L) parameters were optimized in the ozonation process at reaction time of 0–60 min. Then, TOC removal and dye discoloration percentage was compared with the O3, UV and O3/UV processes. In order to compare the performance of the SBR in dye discoloration of RR-198 and TOC removal, four types of effluent, including Raw dye, O3-pretreated dye, UV-treated dye and UV/O3-pretreated dye were separately treated in the SBR system. In the ozonation process, by increasing the pH and reducing the initial dye concentration increased the discoloration percentage. The highest dye discoloration percentage and TOC removal obtained in the hybrid UV/O3/SBR process. Combining biological systems and Advanced Oxidation Processes is an appropriate option for the decomposition of resistant pollutants and increasing the biodegradability of these compounds and is applicable in the water and wastewater industry.

scholarly journals Reduction of Cost and Environmental Impact in the Treatment of Textile Wastewater Using a Combined MBBR-MBR System

Membranes ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 892
Author(s):  
Xuefei Yang ◽  
Víctor López-Grimau
Keyword(s):  
Environmental Impact ◽  
Textile Industry ◽  
Net Present Value ◽  
Capital Expenditure ◽  
Textile Wastewater ◽  
Biofilm Reactor ◽  
Treated Wastewater ◽  
Industrial Scale ◽  
Conventional Activated Sludge ◽  
Operational Expenditure

A hybrid Moving Bed Biofilm Reactor—Membrane Bioreactor (MBBR-MBR) was developed for the treatment of wastewater from a Spanish textile company. Compared with conventional activated sludge (CAS) treatment, the feasibility of this hybrid system to reduce economic and environmental impact on an industrial scale was conducted. The results showed that, technically, the removal efficiency of COD, TSS and color reached 93%, 99% and 85%, respectively. The newly dyed fabrics performed with the treated wastewater were qualified under the standards of the textile industry. Economically, the values of Capital Expenditure (CAPEX) calculated for the hybrid MBBR-MBR system are profitable because of the reduction in Operational Expenditure (OPEX) when compared with CAS treatment, due to the lower effluent discharge tax thanks to the higher quality of the effluent and the decolorizing agent saved. The result of Net Present Value (NPV) and the Internal Rate of Return (IRR) of 18% suggested that MBBR-MBR is financially applicable for implantation into the industrial scale. The MBBR-MBR treatment also showed lower environmental impacts than the CAS process in the life cycle assessment (LCA) study, especially in the category of climate change, thanks to the avoidance of using extra decolorizing agent, a synthetic product based on a triamine.

scholarly journals Development of floating treatment wetlands with plant-bacteria partnership to clean textile bleaching effluent

2019 ◽  
Vol 70 (06) ◽  
pp. 502-511 ◽  
Author(s):  
MUHAMMAD TUSIEF QAMAR ◽  
HUSSAN MALIK MUMTAZ ◽  
MUHAMMAD MOHSIN ◽  
HAFIZ NAEEM ASGHAR ◽  
MUHAMMAD IQBAL ◽  
...  
Keyword(s):  
Textile Industry ◽  
Textile Wastewater ◽  
Effluent Treatment ◽  
Treatment Wetlands ◽  
Pistia Stratiotes ◽  
Treated Wastewater ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Floating Treatment Wetlands

Treatment of textile wastewater prior to its discharge into the environment is a highly concerned issue of the industry. The current established methods in textile industry for effluent treatment are typically high in cost, require range of chemicals along with the generation of concentrated hazardous sludge. It is therefore inevitable to look for economical and eco-friendly ways to treat textile wastewater. Hence, the present study was endeavored to develop green, chemical free and sustainable bacteria inoculated plant based technique for remedying textile bleaching effluents. A lab scale floating treatment wetlands (FTWs) system was developed and implemented for remediation of H2O2 based textile bleaching wastewater. This system was designed by vegetating two free floating aquatic plants Eichhorniacrassipes and Pistia stratiotes. The performance of this system was enhanced by inoculating two pollutant degrading and plant growth promoting bacteria, Bacillus cereus and Bacillus subtilis. The efficacy of this bacterial augmented FTWs system was assessed by monitoring physicochemical parameters of treated wastewater. A substantial decrease in pH, EC, TDS, TSS, BOD and COD was noted. This stamped the effectiveness of this sustainable technique to treat textile effluents.

scholarly journals Ozone pre-oxidation of a textile industry wastewater for acute toxicity removal

2013 ◽  
Vol 8 (2) ◽  
pp. 95-102
Keyword(s):  
Acute Toxicity ◽  
Textile Industry ◽  
Transfer Rate ◽  
Cod Removal ◽  
Treated Wastewater ◽  
Colour Removal ◽  
Wastewater Pollution ◽  
Industry Wastewater ◽  
Raw Wastewater ◽  
Absorbance Band

In this work, pre-ozonation for degradation, decolourization and detoxicifying of a raw textile wastewater collected in a textile fininshing industry, Istanbul (Turkey) is investigated. Differing from the previous studies, a low ozone (O3) flow rate (9.6 mg min-1) was applied at original pH of the wastewater. The effect of pH varying from 5 to 11 and the H2O2 dose of 600 mg l-1 on ozone oxidation were also investigated. The acute toxicity of raw and treated wastewater samples were measured using 24 h newborn Daphnia magna. COD, colour in APHA Pt-Co (platin-cobalt) unit and absorbance at 450, 500 and 550 nm wave lengths which were coinciding the peak absorbance band of the raw wastewater were analyzed in treated samples. A 60% of acute toxicity, 92% of and 50% of total COD removal were obtained at original pH of wastewater by applying ozone for 30 min. Absorbed ozone dose was 105 mg l-1 with a ozone transfer rate of 3.5 mg l-1. Varying pH did not improve toxicity removal, however, soluble COD removal increased at 3 and 6% respectively for 9.0 and 11.0 values while colour removal increased (7%) only at 11.0 pH. Adding 600 mg l-1 of H2O2 increased COD removal at 10% after 20 min oxidation. Colour removal increase was more significant in O3/H2O2 oxidation in parallel with the increase in absorbance kinetics. All over results obtained this study are expected to contribute to control the textile industry wastewater pollution and to protect aquatic environment.

scholarly journals Biosorption of Lead (II)–containing Sasirangan Textile Wastewater using Nanocomposites of Eleocharis dulcis Fibers with Iron (III) Nanoparticles as Adsorbent

2018 ◽  
Vol 156 ◽  
pp. 05011
Author(s):  
Chairul Irawan ◽  
Iryanti F. Nata ◽  
Meilana D.Putra ◽  
Yuli Ristianingsih
Keyword(s):  
Adsorption Capacity ◽  
Textile Industry ◽  
Kinetic Data ◽  
Room Temperature ◽  
Equilibrium Concentration ◽  
Textile Wastewater ◽  
Lead Ion ◽  
Maximum Adsorption Capacity ◽  
Batch Experiments ◽  
Industry Wastewater

This research focuses on the study of biocomposite nanoparticles of Eleocharis dulcis (ED) as potentials biosorbent to reduce the concentration of lead (II) ion containing Sasirangan textile industry wastewater. Eleocharis dulcis, locally named as Purun Tikus, has been developing becomes the biocomposites nanomaterial and valuables material in this research. Batch experiments were carried out to considering the kinetic of biosorption of lead onto the adsorbent, evaluating the effects of lead ion equilibrium concentration, equilibrium pH, and temperature on the adsorption of lead (II). Kinetic data of lead (II) biosorption onto EDB and EDB-MH revealed that equilibrium time was reached within 2 h, and the isotherm data showed that the Langmuir maximum adsorption capacity of the EDB-M and EDB-MH at pHe of 6±0.2, room temperature were 150.43 mg/g and 180.92 mg/g, respectively. The thermodynamic of lead (II) biosorption onto the adsorbent implied the biosorption was spontaneous and endothermic indicating by increased in temperature would increased in adsorption capacity.

The treatment of azo dyes found in textile industry wastewater by anaerobic biological method and chemical oxidation

2011 ◽  
Vol 79 (1) ◽  
pp. 26-33 ◽  
Author(s):  
Orçun Türgay ◽  
Gülin Ersöz ◽  
Süheyda Atalay ◽  
Jörgen Forss ◽  
Ulrika Welander
Keyword(s):  
Azo Dyes ◽  
Textile Industry ◽  
Chemical Oxidation ◽  
Biological Method ◽  
Industry Wastewater

scholarly journals SUGARCANE BAGASSE ADSORPTION EVALUATION AND APPLICATION ON BOD AND COD REMOVAL FROM TEXTILE WASTEWATER TREATMENT

2020 ◽  
Vol 5 (1) ◽  
pp. 30-34
Author(s):  
Desalegn Abdissa ◽  
Ketema Beyecha
Keyword(s):  
Sugarcane Bagasse ◽  
Retention Time ◽  
Textile Industry ◽  
Adsorption Process ◽  
Ph Value ◽  
Textile Wastewater ◽  
Pollutant Removal ◽  
Treated Wastewater ◽  
Toxic Heavy Metals ◽  
Adsorbent Dose

Without properly treated Wastewater released from textile industry contains organic and inorganic pollutants and causes environmental problems. Textile wastewater contains: BOD, COD, toxic heavy metals, organic and inorganic particle matter, colour and etc. The multi-component pollutions needs latest technology treatment. Butch adsorption process is one of the best selective unit operations for such treatment using organic waste material. Sugarcane bagasse was used for this experimental study in butch adsorption process. The variable affects the adsorption process are adsorbent dose changes 0.5 g to 2 g in 200mL sample, pH ranges 3 to 11 and retention time 3 to 7 days. The maximum BOD removed was 85% at 0.5 g, 3days and 8.32 dose, retention time and pH values respectively, and the maximum COD removed was 86% at 1 g, 3 days and 8.24 adsorbent dose, retention time and pH value respectively. Adsorbent dose, pH and retention time are significant factors on the competitive pollutant removal.

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