Impact of electrooxidation on combined physicochemical and membrane treatment processes: Treatment of high strength chemical industry wastewater

Masid, Smita; Waghmare, Sujata; Neti, Nageswara Rao; Misra, Rohit; Dhodapkar, Rita; Nandy, Tapas; Rao, Nageswara N.

doi:10.1016/j.desal.2010.04.007

Cited by 19 publications

(13 citation statements)

References 13 publications

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“…Recently, combined use of these processes has been increasingly applied for industrial wastewater treatment (Jin et al., 2013; Sun et al., 2015). Reverse osmosis is very useful to treat mixed industrial wastewater as removal efficiency of 97%, 72–78%, and 63–65% was obtained for suspended solids, dissolved solids, and COD, respectively (Masid et al., 2010). Suspended solids in the treated wastewater are within the discharge limit, and the treated water can be discharged into inland surface water and used for irrigation.…”

Section: Emerging Methods For Mixed Industrial Wastewater Treatmentmentioning

confidence: 99%

“…This is due to variation in organic loading and composition of industrial wastewater, leading to varied bacterial metabolism (Zhang et al., 2020a). Apart from this, biological wastewater treatment is quite difficult due to the toxicity of nitro‐heterocyclic and amino‐aromatic compounds in wastewater, even if the biodegradability index of wastewater is high (Masid et al., 2010). Unlike organic contaminants, heavy metals present in wastewater cannot be removed and threaten the microbes existing in treatment plants.…”

Section: Mixed Industrial Wastewatermentioning

confidence: 99%

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Emerging technologies for mixed industrial wastewater treatment in developing countries: An overview

Nidheesh

Ravindran

Gopinath

et al. 2021

Environmental Quality Mgmt

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Treatment of mixed industrial wastewater is a great challenge in common effluent treatment plants due to the complex nature of wastewater from different industries. This review outlines the emerging technologies adopted for mixed industrial wastewater treatment in developing nations. The potential for integrating two or more technologies to enhance treatment efficiency is also addressed. Major issues associated with mixed industrial wastewater treatment were found to be low biodegradable nature and presence of toxic compounds in wastewater. Moreover, the composition of wastewater fluctuates and differs significantly from the composition considered during the design of common effluent treatment plants. Biological methods, constructed wetlands, membrane separation methods, electrochemical methods, and advanced oxidation processes are some of the techniques that have been applied for the treatment of mixed industrial wastewater. Advanced oxidation process–based treatment methods were found to be very efficient as the process was able to improve biodegradability and reduce toxicity levels of wastewater along with a significant reduction in organic carbon. Among the biological methods and constructed wetlands, hybrid or integrated technologies were found effective to reduce the contamination level of wastewater. Implementation, operation, and maintenance of technologies mentioned above in a real field would be the thrust areas for future research.

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Section: Emerging Methods For Mixed Industrial Wastewater Treatmentmentioning

confidence: 99%

Section: Mixed Industrial Wastewatermentioning

confidence: 99%

Emerging technologies for mixed industrial wastewater treatment in developing countries: An overview

Nidheesh

Ravindran

Gopinath

et al. 2021

Environmental Quality Mgmt

View full text Add to dashboard Cite

show abstract

“…Electrochemical oxidation (EO) and MS processes complemented each other, as EO effectively removed the chemical oxygen demand (COD) and chroma and MS nearly completely removed total suspended solids (TSS). Masid et al [ 23 ] investigated the effectiveness of combined treatment processes of coagulation/flocculation (C/F), EO, and membrane processes for tackling the organic load in segregated chemical industry wastewater. Three different combined processes of UF-RO (CP-I), C/F-EO-UF-RO (CP-II), and C/F-EO1-EO2-UF-RO (CP-III) were investigated.…”

Section: Coupling Ms and Eaops As A Combined Processmentioning

confidence: 99%

Membrane Separation Coupled with Electrochemical Advanced Oxidation Processes for Organic Wastewater Treatment: A Short Review

et al. 2020

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Research on the coupling of membrane separation (MS) and electrochemical advanced oxidation processes (EAOPs) has been a hot area in water pollution control for decades. This coupling aims to greatly improve water quality and focuses on the challenges in practical application to provide a promising solution to water shortage problems. This article provides a summary of the coupling configurations of MS and EAOPs, including two-stage and one-pot processes. The two-stage process is a combination of MS and EAOPs where one process acts as a pretreatment for the other. Membrane fouling is reduced when setting EAOPs before MS, while mass transfer is promoted when placing EAOPs after MS. A one-pot process is a kind of integration of two technologies. The anode or cathode of the EAOPs is fabricated from porous materials to function as a membrane electrode; thus, pollutants are concurrently separated and degraded. The advantages of enhanced mass transfer and the enlarged electroactive area suggest that this process has excellent performance at a low current input, leading to much lower energy consumption. The reported conclusions illustrate that the coupling of MS and EAOPs is highly applicable and may be widely employed in wastewater treatment in the future.

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“…RO membranes are characterized by MWCO of about 100 Da [ 5 ]. Previous studies reported in the literature [ 6 , 7 , 8 ] have successfully applied RO and NF membranes to treat different types of high strength wastewaters, including those from the chemical industry, food industry, and agricultural wastewaters, among others. Treatment of rendering wastewater using RO or NF membranes has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Polishing Step Purification of High-Strength Wastewaters by Nanofiltration and Reverse Osmosis

et al. 2016

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This article reports findings on the use of nanofiltration (NF) and reverse osmosis (RO) for secondary treatment of high-strength rendering facility wastewaters following an ultrafiltration step. These wastewaters present significant challenges to classical treatment technologies. Constant-pressure, direct-flow membrane filtration experiments were done to screen for flux and effluent water permeate quality of ten commercial NF and RO membranes. All membranes tested were effective in reducing total dissolved salts (TDS) and chemical oxygen demand (COD); however, only two membranes (Koch MPF-34 and Toray 70UB) gave sufficiently stable flux values to warrant longer term cross-flow filtration studies. Cross-flow flux measurements, scanning electron microscopy (SEM), X-ray dispersive spectroscopy (EDS), and attenuated total reflectance-Fourier-transform infrared spectroscopy (ATR-FTIR) indicated that both membranes were eventually fouled by organic and inorganic foulants; however, the Toray 70UB RO membrane yielded a capacity of 1600 L/m2 prior to cleaning. A preliminary economic analysis compared the estimated costs of energy and consumables for a dual-stage UF/RO membrane process and dissolved air floatation (DAF) and found membrane process costs could be less than about 40% of the current DAF process.

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Impact of electrooxidation on combined physicochemical and membrane treatment processes: Treatment of high strength chemical industry wastewater

Cited by 19 publications

References 13 publications

Emerging technologies for mixed industrial wastewater treatment in developing countries: An overview

Emerging technologies for mixed industrial wastewater treatment in developing countries: An overview

Membrane Separation Coupled with Electrochemical Advanced Oxidation Processes for Organic Wastewater Treatment: A Short Review

Polishing Step Purification of High-Strength Wastewaters by Nanofiltration and Reverse Osmosis

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