Pulp and paper mill waste - LinkedIn SlideShare
Pulp and paper mill waste 1. PULP AND PAPER MILL WASTE AJAY KUMAR VERMA 2010PCH 116 SANJAY VERMA 2010PCH 102 2. INTRODUCTION Paper industry in India is the 15th largest paper industry in the world. It provides employment to nearly 1.5 million people and contributes Rs 25 billion to the governments kitty.
The wastewater treatment systems, used in the pulp and paper industry, are biological treatment process such as activated sludge system, oxidation pond, combined system of activated sludge and oxidation pond and combined system of anaerobic pond and oxidation pond .
Pulp and paper industry wastewater treatment
Approximately 85% of water, as per the industry experts, is used in Pulp and paper industry wastewater as process water, ensuing in comparatively large qualities of impure water and demanding the exercise of onsite wastewater treatment solutions.
6. Solid waste : Inorganic waste like lime mud, lime slaker grits, green liquor dregs, boiler and furnace ash, scrubber sludges, wood processing residuals & wastewater treatment sludges. Wastewater treatment sludges have a significant concern for the environment because of including chlorinated compounds.
Paper and Pulp Industry - LinkedIn SlideShare
• Deforestation • Water pollution - solid waste such as sludge derived from their pulping and bleaching operations. • Solid wastes - Dirty wood chips or fibers as well as bark 20. Energy use • The pulp and paper industry uses 84% of the fuel energy consumed by the forest products industry as a whole.
Wood preparation, pulp washing, pulp bleaching and paper making processes as well as the digester house are the major wastewater producers in the pulp-and-paper industry. The volume of wastewater produced in each process is closely related to the quantity of generated pulp in that particular process ( The World Bank Group, 1999 ).
Treatment of wastewater from paper and pulp industry
Treatment of wastewater from paper and pulp industry considering two strategies: water without reuse (open cycle) or zero waste system (closed cyrcle). Condorchem Envitech offers comprehensive industrial wastewater and industrial air emissions treatment solutions.
The wastes developed from paper and pulp industry can be treated through several ways for developing energy or to convert it into some useful products. Some important processes that are used already and processes in development for paper waste treatment are discussed in detail. 7.4.1. Incineration
Wastewater treatment in the pulp-and-paper industry: A
Review Wastewater treatment in the pulp-and-paper industry: A review of treatment processes and the associated greenhouse gas emission Omid Ashrafi 1, Laleh Yerushalmi, Fariborz Haghighat* Department of Building, Civil and Environmental Engineering, Concordia University, 1455 Maisonneuve Blvd., West Montreal, Quebec, H3G 1M8, Canada
In general, wastewater treatment sludge constitutes the largest residual waste stream generated by the pulp and paper industry in terms of volume. Sludge generation rates vary widely among mills ( Lynde-Maas et al., 1997 , Reid, 1998 , Elliott and Mahmood, 2005 , Krigstin and Sain, 2006 ).
Sludge from pulp and paper mills for biogas production
recovery strategies within wastewater treatment and sludge handlin g at pulp and paper mills. Bioresource Technology 100, 3497 -3505. II. Hagelqvist, A., K. Granström and D. Mehmood. Improving the biogas potential of pulp and paper mills while decreasing the electricity demand for wastewater treatment. Accepted for
Since the early eighties, anaerobic wastewater treatment is successfully applied in pulp & paper industry. The first applications of anaerobic technology in pulp & paper industry were in recycle paper factories as they produce excessive wastewater from the production processes. Later also pulp mill related effluents (such as BCTMP, NSSC and
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