Download or read book Colour Removal from Biologically Treated Pulp and Paper Mill Effluents Final Report to March 31 1974 written by Canada. Environment Canada. Forestry Service and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Colour Removal from Biologically Treated Pulp and Paper Mill Effluents written by D. L. Vincent and published by . This book was released on 1974 with total page 170 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 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 Bleach Plant Effluents from the Pulp and Paper Industry written by Pratima Bajpai and published by Springer Science & Business Media. This book was released on 2013-06-22 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers bleach plant effluents, that most polluting effluent from the pulp and paper industry. Disappearance of benthic invertebrates, a high incidence of fish diseases, and mutagenic effects on the aquatic fauna are some of the consequences of the disposal of bleach effluents into surface waters. This book describes environmental impact of bleach plant effluents, environmental regulations, and measures to reduce the pollution load by internal process modification and external treatment of bleach plant 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 Biotechnology for Pulp and Paper Processing written by Pratima Bajpai and published by Springer. This book was released on 2018-02-14 with total page 601 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides the most up-to-date information available on various biotechnological processes useful in the pulp and paper industry. The first edition was published in 2011, covering a specific biotechnological process or technique, discussing the advantages, limitations, and prospects of the most important and popular processes used in the industry. Many new developments have taken place in the last five years, warranting a second edition on this topic. The new edition contains about 35% new material covering topics in Laccase application in fibreboard; biotechnology in forestry; pectinases in papermaking; stickies control with pectinase; products from hemicelluloses; value added products from biorefinery lignin; use of enzymes in mechanical pulping.

Download or read book Development Document for Effluent Limitations Guidelines and Standards for the Pulp Paper and Paperboard and the Builders Paper and Board Mills Point Source Categories written by and published by . This book was released on 1980 with total page 664 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 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.

Download or read book Advances in Biological Treatment of Industrial Waste Water and their Recycling for a Sustainable Future written by Ram Lakhan Singh and published by Springer. This book was released on 2018-10-12 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: With rampant industrialization, the management of waste generated by various industries is becoming a mammoth problem. Wastewater discharges from industrial and commercial sources may contain pollutants at levels that could affect the quality of receiving waters or interfere with potable water supplies. Thousands of small and large-scale industrial units dump their waste, which is often toxic and hazardous, in open spaces and nearby water sources. Over the last three decades, many cases of serious and permanent damage to the environment and human health on the part of these industries have come to the fore. This book mainly focuses on the biological treatment of wastewater from various industries, and provides detailed information on the sources and characteristics of this wastewater, followed by descriptions of the biological methods used to treat them. Individual chapters address the treatment of wastewater from pulp and paper mills; tanneries; distilleries, sugar mills; the dairy industry; wine industry; textile industry; pharmaceutical industry; food processing industry; oil refinery/petroleum industry; fertilizer industry and beverage/ soft drink bottling industry; and include the characteristics of wastewater, evaluation of biological treatment methods, and recycling of wastewater. Easy to follow, with simple explanations and a good framework for understanding the complex nature of biological wastewater treatment processes, the book will be instrumental to quickly understanding various aspects of the biological treatment of industrial wastewater. It will serve as a valuable reference book for scientists, researchers, educators, and engineers alike.

Download or read book EPA 440 1 written by and published by . This book was released on 1980-11 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Green Pulp and Paper Industry written by Amit Kumar and published by Walter de Gruyter GmbH & Co KG. This book was released on 2021-07-19 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides recent developments and future perspectives of pulp and paper processing based on biotechnology to replace conventional environmental unfriendly chemical processes. The use of microorganism and microbial enzymes in various processes such as bleaching, deinking, refining, dissolving pulp, debarking & pitch removal, slime control, wastewater treatment and waste material valorisation are discussed.

Download or read book Pulp and Paper Industry written by Pratima Bajpai and published by Elsevier. This book was released on 2017-02-25 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pulp and Paper Industry: Emerging Waste Water Treatment Technologies is the first book which comprehensively reviews this topic. Over the past decade, pulp and paper companies have continued to focus on minimizing fresh water use and effluent discharges as part of their move towards sustainable operating practices. Three stages—basic conservation, water reuse and water recycling—provide a systematic approach to water resource management. Implementing these stages requires increased financial investment and better utilization of water resources. The ultimate goal for pulp and paper companies is to have effluent-free factories with no negative environmental impact. The traditional water treatment technologies that are used in paper mills are not able to remove recalcitrant contaminants. Therefore, advanced water treatment technologies are being included in industrial wastewater treatment chains aiming to either improve water biodegradability or its final quality. This book discusses various measures being adopted by the pulp and paper industry to reduce water consumption and treatment techniques to treat wastewater to recover it for reuse. The book also examines the emerging technologies for treatment of effluents and presents examples of full-scale installations. - Provides thorough and in-depth coverage of advanced treatment technologies which will benefit the industry personnel, pulp manufacturers, researchers and advanced students - Presents new treatment strategies to improve water reuse and fulfill the legislation in force regarding wastewater discharge - Presents viable solutions for pulp and paper manufacturers in terms of wastewater treatment - Presents examples of full-scale installations to help motivate mill personnel to incorporate new technologies

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 Biological Treatment Method for the Removal of Colour Bod and Suspended Solids from Pulp Mill Effluents Final Report to March 31 1974 written by Canada. Environment Canada. Forestry Service and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book State of the art Review of Pulp and Paper Waste Treatment written by Harry W. Gehm and published by . This book was released on 1973 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: