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Sahāranpur, India

Pandey A.,Scientist E I | Panwar S.,CPPRI | Siddiqui N.A.,University of Petroleum and Energy Studies | Endlay N.,Scientist E I
Journal of Industrial Pollution Control | Year: 2012

Release of AOX (Adsorbable Organic Halide) from pulp and paper industry is now the main environmental concern after statutory authorities notified and set the standard norms for AOX. To meet the norms, the source of release of AOX compounds and its concentration must be known for the treatment of effluent in a better way. This paper deals with the source of release of AOX compounds and its concentration in the particular effluent. The main source of release of AOX compounds are bleach plant effluent. Characterization of bleach plant effluents (Chlorination-stage, Extraction-stage, Hypo-Stage and Combined Stage) collected from agro based small pulp & paper mills and wood based large pulp & paper mills are done to know the AOX value in both type of industries. Characterization of bleach plant effluent shows that the E-stage effluent of bleach plant have high AOX value (88-109 mg/L) as compared to the other stage of agro and wood based mill. On other hand in agro based mills, AOX value is in higher range (95-109 mg/L) as compared to wood based mills (88 -98 mg/L) in E-stage effluent. © EM International Printed in India. All rights reserved. Source


Pandey A.,CPPRI | Panwar S.,CPPRI | Siddiqui N.A.,CPPRI | Endlay N.,University of Petroleum and Energy Studies
Journal of Industrial Pollution Control | Year: 2012

During bleaching of pulp for making paper, a lot of effluents are generated which,contain different type of chloro organic compounds collectively known as Adsorbable Organic Hahde (AOX). AOX is known as toxic chemical and it must be treated before release in the water stream. Bleach plant effluent from Agro based pulp and paper mills releases high amount of AOX compounds as compared to the wood based mills. Results shows that Extraction -stage bleach effluent are significant of AOX compounds as compared to other stage effluent. The adoption of new technologies like extended and oxygen delignification, ECF & TCF bleaching involves huge capital investment as most of these process and equipments are of imported origin. The treatment of segregated bleach plant effluents with combination of chemical (Lime, Alum & Polymer) is the suitable to reduce the AOX by about 5060% and ultimately reduces the toxicity of effluent ©EM International Printed in India. All rights reserved. Source

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