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Saturday, August 8, 2020 | History

4 edition of Reverse osmosis concentration of dilute pulp & paper effluents found in the catalog.

Reverse osmosis concentration of dilute pulp & paper effluents

Averill J. Wiley

Reverse osmosis concentration of dilute pulp & paper effluents

by Averill J. Wiley

  • 206 Want to read
  • 12 Currently reading

Published by [U.S. Environmental Protection Agency]; for sale by the Supt. of Docs., U.S. Govt. Print. Off. in Washington .
Written in English

    Subjects:
  • Paper industry -- Waste disposal.,
  • Sewage -- Purification -- Reverse osmosis process.

  • Edition Notes

    Statementby Averill J. Wiley, George A. Dubey, and I. K. Bansal for the Office of Research and Monitoring, Environmental Protection Agency.
    SeriesWater pollution control research series
    ContributionsDubey, George A., joint author., Bansal, I. K., joint author., United States. Environmental Protection Agency. Office of Research and Monitoring.
    Classifications
    LC ClassificationsTD899.P3 W54
    The Physical Object
    Paginationxvii, 358 p.
    Number of Pages358
    ID Numbers
    Open LibraryOL5390929M
    LC Control Number72602301

    The condensate collected during evaporative concentration of spent pulping liquor is a notable source of toxicity and odor, which needs to be treated (Wagner and Nicell ; Tielbaard et al. ). although silicic ions have to be removed to increase the recovery in reverse osmosis In pulp and paper mill effluents.   Dube et al. () showed that 88% and 89% removal of BOD and COD, respectively was achieved by reverse osmosis (RO). The performance of physico-chemical process at the pulp and paper industry is summarized in Table 6.

    Reverse Osmosis in the Treatment of Drinking Water R. Ryan Dupont Talbert N. Eisenberg treating secondary wastewater effluents (Boenand Johannsen ) 9. National Interim Primary Drinking Water pressure of a dilute solution to the concentration of particles in the solution. From this relationship.   Reverse Osmosis. Reverse osmosis, or RO, is using high osmotic pressure is used to push permeate through a semipermeable membrane while trapping and filtering out any contaminates larger than the pure water that passes through to the lower-pressure side. RO leaves you with pure water and a highly concentrated reject stream that is either used.

    Reverse Osmosis (9) •Concentration polarization factor, G Gi F F S S S c c c-º •Feed-side pressure drop is also important because it causes a reduction in the driving force for water transport-Spiral-wound modules: psi-Hollow-fiber modules: psi Reverse-osmosis process wt%, 50% of the feed water () HO2 S N SR k. Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment.. Most industries produce some trends have been to minimize such production or.


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Reverse osmosis concentration of dilute pulp & paper effluents by Averill J. Wiley Download PDF EPUB FB2

REVERSE OSMOSIS CONCENTRATION OF DILUTE PULP & PAPER EFFLUENTS Averill J. Wiley, George A. Dubey and I. Bansal Ihe Pulp Manufacturers Research League and The Institute of Paper Chemistry 10U3 E. South River Street - P.O. Box Appleton, Wisconsin for the OFFICE OF RESEAECH AND MOHITORIIG ENVIROIMENTAL PROTECTION AGIICY Project #*0 EEL.

Get this from a library. Reverse osmosis concentration of dilute pulp & paper effluents. [Averill J Wiley; George A Dubey; I K Bansal; United States. Environmental Protection Agency. Office of. processing dilute effluents from pulp ing and bleaching operations in the paper industry.

Reverse osmosis is one of several membrane-type processes, development of which has been advanced sub stantially by the government-financed saline water conversion research pro gram of the Office of Saline Water in the U.

Department of the Interior. Desalination, 47 () Elsevier Science Publishers BX., Amsterdam - Printed in The Netherlands TREATMENT OF PULP/PAPER BLEACH EFFLUENTS BY REVERSE OSMOSIS M.J. SIMPSON 1 and G.R. GROVES 2 'Research and Development Department, SAPPI Ltd., Enstra, (RSAI ZPollution Research Group, Department of Chemical Engineering, University of Natal, Durban (RSAI ABSTRACT The reverse Cited by: 6.

The FO process results in concentration of feed solution and dilution of draw solution. Download: Download full-size image; Figure Migration of water during (A) osmosis, (B) reverse osmosis, (C) forward osmosis.

The arrows indicate the direction of mass transfer. Reprinted with permission from Rastogi, N.K., Cited by: 7.

Abstract. Laboratory, pilot and large field demonstration units were used concurrently to develop engineering design factors for concentration treatment of four different pulp and paper industry waste streams by reverse osmosis.

In this study, flux, retention, and permeate quality of various nanofiltration and low-pressure reverse osmosis membranes were investigated at two temperatures and by using a low shear (DSS Labstak M20 ®) and a high shear (CR/2) overall aim was to study the suitability of nanofiltration in purification of the discharge water from external activated sludge processes in the pulp.

Reverse osmosis of the retentate from the nanofiltration of secondary effluents C. García-Figueruelo*, A. Bes-PiC19a, J.A.

Mendoza-Roca, J. Lora-García, B. Cuartas-Uribe Department of Chemical and Nuclear Engineering, Polytechnic University of Valencia, Camino de Vera s/n, Valencia, Spain Tel. +; Fax +; email: crigarfi@ Received 16. Journals & Books; Help This method has also been successfully adapted to the treatment of dilute pulp and paper effluents (52).

It has also been used for treatment of the effluent of a photosynthetic municipal- sewage-fed algal pond (/2). DUBREY AND I. BANSUL, Reverse osmosis concentration of dilute in pulp and paper effluents. Water. The achieved permeate can easily be reused in paper production.

Nanofiltration has a significantly higher flux and also a lower fouling tendency than reverse osmosis but it passes through monovalent ions when there is a high sulphate concentration in the water. Therefore, RO might be needed in such cases to produce excellent process water.

InIrving Pulp & Paper Limited (St. John, NB), a bleached kraft pulp mill without a secondary effluent treatment system at the time, commissioned a reverse osmosis (RO) system to treat.

Reverse osmosis is what the name implies: osmosis in reverse. In osmosis, water with a lower concentration of solids naturally flows through a membrane to an area of higher concentration through naturally occurring osmotic pressure, equalizing the concentration of the solute on.

new concentration process, about kwh energy can be saved and filtration, ultra-filtration, reverse osmosis, pervaporation, and gas-vapor separation (Hilal et al. ; Braeken et al. Polyethersulfone (PES), which has a high glass effluents coming from pulp and paper mills, researchers in Lappeenranta University of.

Reverse osmosis technique was used for the treatment of industrial waste water. Ions like calcium, magnesium, sodium, sulfate, and nitrate were found in the waste water of the General Company of.

The membrane technology has been commercially applied in the pulp and paper industry as early as the 's and is now commonly used in several areas such as for the treatment of freshwater.

[40][41][42] Using reverse osmosis (pore size 92% NH 4 + and >96% NO 3 − reduction in mining wastewaters has been observed 38 in pilot scale trials. 19, 40 Membrane filtration of. This paper describes four potential applications for microfiltration membrane processes in the recycling of specific effluents in pulp and paper mills: 1) old newsprint deinking effluent.

10 packaging paper, and m3/t of newsprint, printing paper, tissue paper, or market 11 pulp (BREF, ). 12 As high water quality is required for replacing fresh water use in some stages of 13 the paper mill, like high pressure showers, reverse osmosis (RO) systems are being.

In this work, recovery of water from mechanical pulp mill effluents and wt % NaCl solutions through propane hydrate formation was investigated.

A new apparatus in which hydrate nucleation, growth, separation, and melting occur in one vessel was designed and built. The emphasis of the work was on crystal separation.

The average reduction in the salt content of the recovered water from the. In reverse osmosis, pressure is exerted on the side with the concentrated solution to force the water molecules across the membrane to the fresh water side. Membrane Separation Technologies If pressure greater than the osmotic pressure is applied to the high concentration the direction of water flow through the membrane can be reversed.

A process for treating a water stream containing dissolved organic carbon and dissolved salts comprises subjecting the water stream to reverse osmosis after a pre-treatment step to reduce the amount of dissolved organic carbon directed in water to the reverse osmosis treatment step.

The preferred pre- treatment step is a membrane treatment step such as nanofiltration.For example, for clean water production, NF technology has been replacing or working alongside reverse osmosis in water treatment processes for clean water production (e.g., desalination of brackish water and seawater) and for wastewater treatment (e.g., textile, pulp and paper, pharmaceutical, and agro-industrial) due to the cost-benefit.AbstractPharmaceutically active compounds (PhACs) reaching surface waters through municipal wastewater are a concern, as existing treatment processes .