Tailoring an economical membrane process for internal purification in the paper industry

Nuortila‐Jokinen, Jutta; Kuparinen, Anne; Nyström, Marianne

doi:10.1016/s0011-9164(98)00083-6

Cited by 36 publications

(7 citation statements)

References 6 publications

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“…When SE was directly treated by UF, the membrane flux sharply decreased in first 1–2 min of the UF process. Also, many of the dissolved components in the pulp and paper wastewater are negatively charged . Rapid decline of flux was probably due to the adsorption between the membrane surface and negatively charged components in wastewater, which induced the blocking of membrane pores.…”

Section: Resultsmentioning

confidence: 89%

Reducing ultrafiltration membrane fouling during recycled paper mill wastewater treatment using pretreatment technologies: a comparison between coagulation and Fenton

Hou

2018

J of Chemical Tech & Biotech

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BACKGROUND: Ultrafiltration (UF) technology is efficient in treating wastewater. However, membrane fouling during filtration process affects the performance of UF to a large extent. Pretreatment prior to UF is important for enhancing membrane performance, reducing membrane fouling and extending the membrane lifetime. RESULTS:In this study, two pretreatment technologies, including coagulation and Fenton, were applied individually before UF for treating secondary effluent (SE) from recycled paper mill. Results exhibited that direct membrane filtration got the highest flux loss and worst membrane fouling compared with performances of those conducting pretreatments. Compared to coagulation + UF, Fenton + UF had superior performance in reducing dissolved organics with a COD rejection of 91.81%, and mitigating membrane fouling with a stable flux of 133 J m −2 h −1 . GPC results further showed that Fenton pretreatment degraded macromolecules into smaller organic compounds. In addition, the classical blocking filtration laws were employed to scrutinize the fouling alleviation mechanism of pretreatments. CONCLUSION: Pretreatments prolonged the transition from pore blocking to cake filtration, thereby reducing fouling. Among them, Fenton was a promising pretreatment method prior to UF for treating recycled paper SE.

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Section: Resultsmentioning

confidence: 89%

Reducing ultrafiltration membrane fouling during recycled paper mill wastewater treatment using pretreatment technologies: a comparison between coagulation and Fenton

Hou

2018

J of Chemical Tech & Biotech

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“…In this overview, four typical application areas for membrane technology are focused on: the drinking water industry, the leather industry, the treatment of leachates from landfills, and the textile industry. These application areas are among the most important for membrane processes; other applica tion areas such as the paper mill industry ( , ), the food industry ( − ) or the electroplating industry () might use a similar approach, although particular difficulties may arise in each case. Moreover, the concentrate rather than the permeate may be the desired product in some cases, especially in the food industry.…”

Section: Introductionmentioning

confidence: 99%

Reuse, Treatment, and Discharge of the Concentrate of Pressure-Driven Membrane Processes

Bruggen

Lejon

Vandecasteele

2003

Environ. Sci. Technol.

321

108

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Application of pressure-driven membrane processes (microfiltration, ultrafiltration, nanofiltration, and reverse osmosis) results in the generation of a large concentrated waste stream, the concentrate fraction, as a byproduct of the purification process. Treatment of the concentrate is a major hurdle for the implementation of pressure-driven membrane processes since the concentrate is usually unusable and has to be discharged or further treated. This paper reviews possibilities to treat or discharge the concentrate: (i) reuse, (ii) removal of contaminants, (iii) incineration, (iv) direct or indirect discharge in surface water, (v) direct or indirect discharge in groundwater, and (vi) discharge on a landfill. General guidelines are given for the choice of a proper method as a function of the origin and composition of the water treated. Next, the further treatment of the concentrates in four application areas of pressure-driven membrane processes (drinking water industry, leather industry, and membrane treatment of landfill leachates and of textile process waters) is discussed.

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“…Prior to reuse, these water fractions must be sufficiently treated in order to avoid different kinds of problems in paper making. This internal treatment can be done by membrane filtration which is one of the most competitive and environmentally friendly techniques available and has already been proven to be successful in various different pulp and paper industry applications even on mill scale [1].…”

Section: Introductionmentioning

confidence: 99%

Treatment of combined bleaching effluent by membrane filtration technology for system closure in paper industry

Shukla

Kumar

Bansal

2010

Desalination and Water Treatment

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A B S T R A C TThis study has been carried out for the treatment of combined bleaching effluent of an Indian pulp and paper mill. The Chlorination, extraction, Hypo-1 & Hypo-2 (CEHH) sequence is being used for the bleaching of hardwood pulp in the mill. Effluent was treated by the Ultrafiltration (UF), Nanofiltration (NF) and Reverse Osmosis (RO). Thin film composite spiral-wound modules, having crass flow membranes made-up by polysulphone and polyamide were used in the study. Three initial inlet pressures were 6.8 bar, 10.3 bar and 13.7 bar for UF and NF. For RO initial inlet pressures of 10.3 bar, 13.7 bar and 17.2 bar, were taken in different trials. Retentate of each experiment was recycled back to the feed and retreated till the inlet pressure increased up to the maximum cut-of pressure for each membrane. Ultrafiltration permeate was fed to the nanofiltration, and permeate of nanofiltration was again fed to the reverse osmosis. Variations in Trans Membrane Pressure (TMP) and permeate flux were assessed. Pollutants removal and fouling indexes were obtained for each membrane at each initial inlet pressure.

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Tailoring an economical membrane process for internal purification in the paper industry

Cited by 36 publications

References 6 publications

Reducing ultrafiltration membrane fouling during recycled paper mill wastewater treatment using pretreatment technologies: a comparison between coagulation and Fenton

Reducing ultrafiltration membrane fouling during recycled paper mill wastewater treatment using pretreatment technologies: a comparison between coagulation and Fenton

Reuse, Treatment, and Discharge of the Concentrate of Pressure-Driven Membrane Processes

Treatment of combined bleaching effluent by membrane filtration technology for system closure in paper industry

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