Download or read book A Laboratory Analysis of Color Removal Across a Pulp and Paper Mill Wastewater Treatment Facility Canton North Carolina written by Aimee Winter McCord and published by . This book was released on 1995 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Laboratory Analysis of the Color Removal Mechanism Across the Wastewater Treatment Facility of a Pulp and Paper Mill Canton North Carolina written by Chad Michael Salisbury and published by . This book was released on 1996 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1974-07 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1974 with total page 1352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Review of Colour Removal Technology in the Pulp and Paper Industry written by R. J. Rush and published by Water Pollution Control Directorate : Supply and Services Canada. This book was released on 1976 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pulp and paper industry produces large volumes of effluent containing, among other things, dark brown lignin and lignin degradation products. The exact nature of the chromophoric (colour causing) groups in the wastes and the effects of these colour bodies on the aquatic environment are not known. However, developmental work on several processes for colour reduction has reached full scale application and colour removal is now required in many local areas for various reasons. Colour reduction can be achieved by either technical changes within the mill or by effluent treatment systems. In-plant modification can range from simple, inexpensive measures such as pulp washing and better "housekeeping" practices, to complex technological changes such as implementation of oxygen bleaching. While in-plant changes should be considered and implemented as a first preference, external treatment may often still be required. There are a large number of external treatment methods which are known to be technically feasible for colour removal from pulp and paper mill effluents.

Download or read book Colour Removal from Magnesium Bisulphite Pulp and Paper Mill Effluent Using Lignite Adsorption and Salt Coagulation written by Galuh Yuliani and published by . This book was released on 2012 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: The removal of colour, organics and phosphorus from pulp and paper mill effluent and the development of colour of the wastewater were investigated. These contaminants are considered to be the most important due to their resistance over common treatment applied by the mill.Two approaches, adsorption and coagulation, were chosen for investigation of the removal of colour, organics and phosphorus from aqueous discharges of a bisulphite pulp and paper mill. Additionally, the colour generation induced by UV irradiation of the treated effluents was investigated. This study was carried out to explore the possibility of UV-induced colour development of the effluent over the long term and to characterize the colour producing species from the wastewater.Cheap and highly abundant brown coal (or lignite) was utilized as adsorbent for colour, phosphorus, and organics from the industrial effluent. Knowledge on the mechanism of brown coal adsorption, selectivity, the effect of pre-treatment and physical properties of brown coal is crucial for the future application of brown coal in the water industry. The mechanism of brown coal adsorption was investigated using various brown coal samples differing in physical and chemical composition and two model dye solutions, cationic (safranin) and anionic (alizarin red) dyes. The capacities of some brown coals (Loy Yang high Na and Yallourn) were higher than commercial coal-based activated carbon. However, the adsorption capacities of all brown coal samples for an anionic dye were very low, less than 3% of that for activated carbon. This result reveals the potential of brown coal to remove positively charged contaminants from aqueous solutions and suggests cation-exchange as the major mechanism involved. Effects of brown coal pre-treatment, drying and washing, were investigated. The equilibrium adsorption data were analysed using the two most popular adsorption isotherms, Langmuir and Freundlich. The Langmuir isotherm fitted most adsorption data of brown coal better than the Freundlich isotherm, supporting the concept of monolayer adsorption and the role of chemical adsorption in the mechanism. When applied to actual wastewater from a magnesium bisulphite pulp and paper mill, brown coal exhibited multi-component adsorption of colour, organics and phosphorus from the solution. Brown coal showed an ability to remove phosphorus from the wastewater, which could not be achieved with activated carbon; yet brown coal had significantly lower adsorption capacities for colour and organics than did activated carbon. This can be explained by the nature of organics and colour that carried negative charge in the wastewater as indicated by the zeta potential analysis. Another powerful technique for organic removal, coagulation, was then chosen to significantly reduce colour and organics content of the effluent.Coagulation using trivalent salts was selected to efficiently remove colour, organics and total phosphorus in the treated and untreated wastewater solution. Selectivity of salt-induced coagulation was achieved and showed the following trend of removal efficiency: colour ~ total phosphorus > TOC. The removal of colour and total phosphorus from concentrated pulp mill effluents were above 90%. The coagulation method was proven to be superior for the remediation of both treated and untreated effluent from pulp and paper industry. However, a small amount of colour and organics still persisted in the wastewater which may lead to colour development after treatment at the collecting discharge point.The Photometric Dispersion Analyzer (PDA) and Focused Beam Reflectance Measurement (FBRM) techniques were utilised to study the coagulation kinetics of the wastewater upon addition of salt. The involvement of fast aggregation and adsorption in the coagulation mechanism were revealed. The high critical coagulation concentration (CCC) and the significant role of trivalent salts in the coagulation process indicated the involvement of complexation reactions prior to coagulation. In coagulation, pH was also found to be a dominant factor affecting efficiency.The UV-induced colour generation of the effluent from pulp and paper industry was studied using UV-irradiation at 302 nm and 254 nm. Lignin derived compounds were suspected to be responsible for colour growth of pulp and paper wastewater. Three model compounds, lignosulfonic acid, humic acid and vanillin, were selected and studied as comparison. The yellowing rate of the wastewater solution was found to be similar to that of the model lignosulfonic acid solution supporting the occurrence of lignin compounds in the wastewater. The yellowing rate of humic acid was lower than the wastewater solution, but the yellowing rate for vanillin was significantly higher than that of the wastewater solution. The irradiation products were analysed using High Performance Liquid Chromatography (HPLC), UV spectroscopy, Electrospray Mass Spectrometry (ES-MS), Proton Nuclear Magnetic Resonance (1H-NMR) and Fourier Transform Infrared Spectroscopy (FTIR). The mechanism of wastewater yellowing upon irradiation was suspected to mimic the mechanism of photo-yellowing of paper. The result also suggested that UV-induced chemical reactions may be important in the aqueous discharge of pulp and paper mill effluent that could potentially enhance its colour.

Download or read book Pulp and Paper Wastewater Color Removal written by Parsa Pezeshk and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Pulp and paper industries generate highly-colored wastewaters, the color of which is not removed by conventional biological treatment. As a result, the persistent color of the wastewater can potentially disrupt the aesthetic appearance of the recieving stream as well as releasing potentially toxic compounds to the environment. Coagulation and flocculation is a chemical treatment practiced to remove color from pulp and paper mill wastewaters. The main focus of this work was to study the color removal efficiency of coagulation/flocculation treatment on a specialty pulp and paper mill wastewater located in the State of Tennessee. In this regard, the effect of coagulant, coagulant aid, and flocculent dosages as well as the wastewater pH and temperature on color removal process were examined. Furtheremore, bentonite clay and powdered activated carbon (PAC) effectiveness for color removal were tested.

Download or read book EPA Reports Bibliography Supplement written by United States. Environmental Protection Agency. Library Systems Branch and published by . This book was released on 1974 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book EPA Reports Bibliography Supplement 2 written by United States. Environmental Protection Agency and published by . This book was released on 1974 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Chemistry of Dyes and Pigments written by Abraham Reife and published by John Wiley & Sons. This book was released on 1996-01-05 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last two decades the EPA and other national andinternational agencies have placed increasingly strict regulationson the manufacture and use of synthetic colorants. The pigment anddye industry has had to develop the technology necessary to analyzeand remediate pollutants in wastewater. Although these efforts haveproduced a considerable volume of information, until now, no singlebook has provided an organized, comprehensive treatment of theenvironmental chemistry of synthetic colorants. Environmental Chemistry of Dyes and Pigments is the firstcomprehensive reference to address the environmental problems posedby synthetic colorants, and to provide a forum for the solutionsproposed by industry, government, and academia. Focusing ondevelopments in the field over the past two decades, it deals withall aspects of colored wastewater treatment, the disposal of dyes,analytical methods, toxicity, and regulatory questions. In its coverage of wastewater treatment, this book addresses boththe most commonly used methods and those specifically designed toaddress pollution problems at the source by analyzing for andremoving dyes and pollutants from wastewater effluent. Throughout,real-world data on a wide variety of dyes and dye intermediates isprovided, as well as cost-effective strategies for dealing withwastewater treatment. In addition, several chapters are devoted to the perspectives ofnational and international experts on regulations governing themanufacture, handling, use, and disposal of synthetic dyes andpigments. The impact these regulations have had on both U.S. andforeign industry is also discussed. A complete, comprehensive, and up-to-date guide to pollutionprevention in the dyestuff and textile industries Environmental Chemistry of Dyes and Pigments is the onlyself-contained volume that focuses on the environmental impact ofsynthetic dyes and pigments. Contributions by international expertsfrom industry, academia, and government make this an indispensablebook for anyone dealing with the environmental problems posed bysynthetic colorants. It covers the entire range of environmentalissues, from waste treatment and analysis to pollution preventionand government regulations. Covers the latest wastewater treatment methods Shows how to use recycling and reusing methods effectively, whilecutting production costs Describes state-of-the-art technology, including the PACT(r)system Explains analysis techniques, including spectrometry andionization Covers legislative issues and the regulatory status of variouscompounds in both the United States and abroad Examines the various pollution prevention programs instituted bygovernment and industry Bridging the gap between industrial interests and environmentalconcerns, Environmental Chemistry of Dyes and Pigments stands as aninvaluable resource for scientists, researchers, and engineers inthe textile and dyestuff industries, and in the environmentalsciences. It is also an extremely useful text for environmentalscience students.

Download or read book Effluent Decolorization Technologies for the Pulp and Paper Industry written by T. W. Joyce and published by . This book was released on 1983 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Novel Methods for the Removal of Colour from Pulp and Paper Mill Wastewater written by Kathryn G. Wingate and published by . This book was released on 2002 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Review of Color Color Measurement and Color Formation in Pulp and Paper Mill Sewers and Wastewater Treatment Plants written by Jeffrey Louch and published by . This book was released on 2011 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Investigation Into the Removal of Color from Pulp Mill Wastewater by Extended Lagooning written by Jerry Alton Wise and published by . This book was released on 1979 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Removal of Color and COD from Pulp and Paper Mill Wastewater Using Wood Wastes written by William Kinsoi and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Color removal Treatment of Pulp mill Wastewater by Lagooning written by Jack Elvyn Davis and published by . This book was released on 1977 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Colour Formation in Pulp and Paper Wastewaters During Biological Treatment written by Craig Brennan Milestone and published by . This book was released on 2007 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wastewater colour is of concern in the pulp and paper industry as regulations place strict limits on wastewater quality and aesthetic appeal. In some treatment systems increases in colour occur, meaning that maximum daily limits are exceeded and mills may fail discharge standards. This study specifically addressed the colour formation issue for the first time. A multi-site industrial survey confirmed previous anecdotal evidence that colour formation of up to 40% occurs in whole mill effluents treated using aerated stabilisation basins. In-depth field studies of a specific treatment system showed that colour formation was initiated in low dissolved oxygen zones. The importance of biological anaerobic activity was confirmed using continuous and batch reactors, where colour formation was shown to be correlated to oxygen availability. Batch studies showed that in-mill wastewaters high in lignin-derived material, such as bleaching or thermomechanical pulping effluents had greater colour forming potential. Wastewaters low in lignin, such as papermachine effluents, showed less colour forming potential. Combinations of effluents with high and low colour forming potential led to greater colour increases than predicted from the individual effluents alone. Fractionation of pulp bleaching wastewaters based on molecular weight showed that colour formation occurs in high molecular mass (HMM) material. Absence of HMM material effectively removed the potential for colour increases during biological treatment. Previously reported mechanisms ascribing colour formation to reactions between anaerobically produced monomers were not supported experimentally. Reactions between such monomers and HMM also did not produce colour increases. Overall, this study of colour behaviour in these complex systems has presented complex challenges. Combining fundamental studies on colour function and behaviour with laboratory assay-directed studies and in-mill assessments will assist the industry in identifying realistic colour management strategies that provide overall environmental benefits to the sector. Studies on fractionated bleaching wastewaters showed HMM acted as an electron acceptor for bacterial growth and could increase its colour through structural changes, such as the formation of quinonoid chromophores. Increases in colour were inhibited when electron acceptors of greater energy than HMM were present. Colour increases also correlated well with the availability and removal of suitable electron donor material.