Water recovery with combined membrane system in textile industry, treatment and management of concentrates by hybrid advanced oxidation/membrane filtration

The textile industry provides for the needs of people especially in apparel and household items. The industry also discharges dye-containing wastewater that is typically challenging to treat. Despite the application of the biological and chemical treatments for the treatment of textile wastewater, these methods have their own drawbacks such as non-environment friendly, high cost and energy intensive. This research investigates the efficiency of the celestine blue dye removal from simulated textile wastewater by electrocoagulation (EC) method using iron (Fe) electrodes through an electrolytic cell, integrated with nylon 6,6 nanofiber (NF) membrane filtration for the separation of the flocculants from aqueous water. Based on the results, the integrated system achieves a high dye removal efficiency of 79.4%, by using 1000 ppm of sodium chloride as the electrolyte and 2 V of voltage at a constant pH of 7 and 10 ppm celestine blue dye solution, compared to the standalone EC method in which only 43.2% removal was achieved. Atomic absorption spectroscopy analysis was used to identify the traces of iron in the residual EC solution confirming the absence of iron. The EC-integrated membrane system thus shows superior performance compared to the conventional method whereby an additional 10–30% of dye was removed at 1 V and 2 V using similar energy consumptions.

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Biological sulfate removal in an acidogenic bioreactor with an ultrafiltration membrane system

Water Science & Technology ◽

10.2166/wst.1998.0709 ◽

1998 ◽

Vol 38 (4-5) ◽

pp. 513-520 ◽

Cited By ~ 2

Author(s):

O. Mizuno ◽

H. Takagi ◽

T. Noike

Keyword(s):

Sulfate Reduction ◽

Membrane Filtration ◽

Membrane Bioreactor ◽

Volatile Fatty Acids ◽

Membrane System ◽

Organic Substrate ◽

Ultrafiltration Membrane ◽

Sulfate Concentration ◽

Sulfate Removal ◽

Chemostat Reactor

The biological sulfate removal in the acidogenic bioreactor with an ultrafiltration membrane system was investigated at 35°C. Sucrose was used as the sole organic substrate. The sulfate concentration in the substrate ranged from 0 to 600mgS·1−1. The chemostat reactor was operated to compare with the membrane bioreactor. The fouling phenomenon caused by FeS precipitate was observed at higher concentration of sulfate. However, it was possible to continuously operate the membrane bioreactor by cleaning the membrane. The efficiency of sulfate removal by sulfate reduction reached about 100% in the membrane bioreactor, and 55 to 87% of sulfide was removed from the permeate by the membrane filtration. The composition of the metabolite was remarkably changed by the change in sulfate concentration. When the sulfate concentration increased, acetate and 2-proponol significantly increased while n-butyrate and 3-pentanol decreased. The sulfate-reducing bacteria play the role as acetogenic bacteria consuming volatile fatty acids and alcohols as electron donors under sulfate-rich conditions. The results show that the acidogenesis and sulfate reduction simultaneously proceed in the membrane bioreactor.

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Performance of a Hybrid ED–NF Membrane System for Water Recovery Improvement via NOM Fouling Control

ACS ES&T Engineering ◽

10.1021/acsestengg.1c00153 ◽

2021 ◽

Author(s):

Soyoon Kum ◽

Matthew R. Landsman ◽

Gregory M. Su ◽

Guillaume Freychet ◽

Desmond F. Lawler ◽

...

Keyword(s):

Membrane System ◽

Water Recovery ◽

Fouling Control

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Effect of Pre-Oxidation on Coagulation/Ceramic Membrane Treatment of Yangtze River Water

Membranes ◽

10.3390/membranes11050369 ◽

2021 ◽

Vol 11 (5) ◽

pp. 369

Author(s):

Shengji Xia ◽

Xinran Zhang ◽

Yuanchen Zhao ◽

Fibor J. Tan ◽

Pan Li ◽

...

Keyword(s):

Water Treatment ◽

Membrane Fouling ◽

Membrane Filtration ◽

Ceramic Membrane ◽

Membrane Separation ◽

Membrane System ◽

Coagulation System ◽

Fouling Control ◽

Filtration System ◽

Membrane Treatment

The membrane separation process is being widely used in water treatment. It is very important to control membrane fouling in the process of water treatment. This study was conducted to evaluate the efficiency of a pre-oxidation-coagulation flat ceramic membrane filtration process using different oxidant types and dosages in water treatment and membrane fouling control. The results showed that under suitable concentration conditions, the effect on membrane fouling control of a NaClO pre-oxidation combined with a coagulation/ceramic membrane system was better than that of an O3 system. The oxidation process changed the structure of pollutants, reduced the pollution load and enhanced the coagulation process in a pre-oxidation-coagulation system as well. The influence of the oxidant on the filtration system was related to its oxidizability and other characteristics. NaClO and O3 performed more efficiently than KMnO4. NaClO was more conducive to the removal of DOC, and O3 was more conducive to the removal of UV254.

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Treatment of highly-colored surface water by a hybrid microfiltration membrane system incorporating ion-exchange

Water Science & Technology Water Supply ◽

10.2166/ws.2018.132 ◽

2018 ◽

Vol 19 (3) ◽

pp. 855-863 ◽

Cited By ~ 1

Author(s):

T. Miyoshi ◽

Y. Takahashi ◽

T. Suzuki ◽

R. Nitisoravut ◽

C. Polprasert

Keyword(s):

Surface Water ◽

Hybrid System ◽

Membrane Fouling ◽

Membrane Filtration ◽

Membrane System ◽

Pilot Scale ◽

Manganese Concentration ◽

Moderate Increase ◽

Coagulant Dosage ◽

Filtration System

Abstract This study investigated the performance of a hybrid membrane filtration system to produce industrial water from highly-colored surface water. The system consists of a membrane filtration process with appropriate pretreatments, including coagulation, pre-chlorination, and anion exchange (IE) process. The results of the pilot-scale experiments revealed that the hybrid system can produce treated water with color of around 5 Pt-Co, dissolved manganese concentration of no more than 0.05 mg/L, and a silt density index (SDI) of no more than 5 when sufficient coagulant and sodium hypochlorite were dosed. Although the IE process effectively reduced the color of the water, a moderate increase in the color of the IE effluent was observed when there was a significant increase in the color of the raw water. This resulted in a severe membrane fouling, which was likely to be attributed to the excess production of inorganic sludge associated with the increased coagulant dosage required to achieve sufficient reduction of color. Such severe membrane fouling can be controlled by optimising the backwashing and relaxation frequencies during the membrane filtration. These results indicate that the hybrid system proposed is a suitable technology for treating highly-colored surface water.

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Treatability of textile dye-bath effluents by advanced oxidation: preparation for reuse

Water Science & Technology ◽

10.2166/wst.1999.0040 ◽

1999 ◽

Vol 40 (1) ◽

pp. 183-190 ◽

Cited By ~ 30

Author(s):

N. H. Ince ◽

G. Tezcanlı

Keyword(s):

Organic Carbon ◽

Total Organic Carbon ◽

Azo Dye ◽

Uv Light ◽

Advanced Oxidation ◽

Membrane System ◽

Molar Ratio ◽

Textile Dye ◽

Experimental Conditions ◽

Solids Content

Treatability of textile dye-bath effluents by advanced oxidation with Fenton and Fenton-like reagents (FeII/H2O2 and FeIII/H2O2), in the presence and absence of UV light was investigated, using a reactive azo-dye (Procion Red HE7B), and typical dye bath constituents. Under the experimental conditions employed, it was found that with 20 min UV irradiation, complete color removal and 79% total organic carbon degradation is possible, when the system is operated at pH=3, and with a H2O2/Fe(II) molar ratio of 20:1. The increased dissolved solids content of the treated solution implies the necessity of an appropriate membrane system to make the effluent reusable in the dye/wash processes.

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Advanced oxidation of raw and biotreated textile industry wastewater with O3, H2O2 /UV-C and their sequential application

Journal of Chemical Technology & Biotechnology ◽

10.1002/1097-4660(200101)76:1<53::aid-jctb346>3.0.co;2-t ◽

2001 ◽

Vol 76 (1) ◽

pp. 53-60 ◽

Cited By ~ 62

Author(s):

Idil Arslan ◽

Isil Akmehmet Balcioglu

Keyword(s):

Textile Industry ◽

Advanced Oxidation ◽

Uv C ◽

Industry Wastewater

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Experiences in integrity testing ultrafiltration membranes at a large potable water treatment works

Water Science & Technology Water Supply ◽

10.2166/ws.2003.0143 ◽

2003 ◽

Vol 3 (5-6) ◽

pp. 1-7

Author(s):

S. Oxtoby

Keyword(s):

Water Treatment ◽

Membrane Filtration ◽

Membrane System ◽

Primary System ◽

Secondary System ◽

Ultrafiltration Membranes ◽

Integrity Testing ◽

Particulate Loads ◽

Integrity Tests ◽

The Uk

The Clay Lane Water treatment works of Three Valleys Water, in the south east of England, is currently the world’s largest ultrafiltration works with a capacity of 160 Ml/d. It utilises ultrafiltration membranes constructed as hollow fibres with a number of membrane elements in a pressure housing. The plant has been operating since spring 2001. The decision to install the system was made in anticipation of the introduction of tighter regulations on Cryptosporidium in water supplies in the UK. Once a decision was made to proceed with a membrane system the ability to monitor the integrity of the system and to repair problems became a crucial design parameter that was a critical part of membrane selection. The need to include a system affected the design of the filtration units offered by manufacturers. The available systems for integrity testing are reviewed and the reasons for selecting the system adopted are discussed. These include particle counting and the dosing of test particulate loads. The different forms of air passage integrity tests are discussed and the displaced air flow system used is described. Once a failure has been detected it must be traced so that the fault can be repaired. This procedure is described together with the techniques of pin repair of damaged fibres. At Clay Lane and other membrane filtration sites the backwash water from membrane cleaning is recovered using a secondary membrane system. Currently the secondary system operates in the same integrity testing regime as the primary system and the secondary filtrate is returned ahead of the primary membrane system. The relative merits of this system, or the alternative of adding the recovered water to the filtrate are discussed.

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UV-Catalyzed Persulfate Oxidation of an Anthraquinone Based Dye

Catalysts ◽

10.3390/catal10040456 ◽

2020 ◽

Vol 10 (4) ◽

pp. 456 ◽

Cited By ~ 1

Author(s):

Kamil Krawczyk ◽

Stanisław Wacławek ◽

Edyta Kudlek ◽

Daniele Silvestri ◽

Tomasz Kukulski ◽

...

Keyword(s):

Textile Industry ◽

Membrane Filtration ◽

Lemna Minor ◽

Reaction Pathway ◽

Main Reaction ◽

Synthetic Dyes ◽

Quantum Chemical Analysis ◽

Substantial Impact ◽

Anthraquinone Dye ◽

Persulfate Oxidation

Wastewater from the textile industry has a substantial impact on water quality. Synthetic dyes used in the textile production process are often discharged into water bodies as residues. Highly colored wastewater causes various of problems for the aquatic environment such as: reducing light penetration, inhibiting photosynthesis and being toxic to certain organisms. Since most dyes are resistant to biodegradation and are not completely removed by conventional methods (adsorption, coagulation-flocculation, activated sludge, membrane filtration) they persist in the environment. Advanced oxidation processes (AOPs) based on hydrogen peroxide (H2O2) have been proven to decolorize only some of the dyes from wastewater by photocatalysis. In this article, we compared two very different photocatalytic systems (UV/peroxydisulfate and UV/H2O2). Photocatalyzed activation of peroxydisulfate (PDS) generated sulfate radicals (SO4•−), which reacted with the selected anthraquinone dye of concern, Acid Blue 129 (AB129). Various conditions, such as pH and concentration of PDS were applied, in order to obtain an effective decolorization effect, which was significantly better than in the case of hydroxyl radicals. The kinetics of the reaction followed a pseudo-first order model. The main reaction pathway was also proposed based on quantum chemical analysis. Moreover, the toxicity of the solution after treatment was evaluated using Daphnia magna and Lemna minor, and was found to be significantly lower compared to the toxicity of the initial dye.

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