Toxicity and treatment of kraft pulp bleach plant waste
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Toxicity and treatment of kraft pulp bleach plant waste

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Published by International Pacific Salmon Fisheries Commission in New Westminster, B.C .
Written in English

Subjects:

Places:

  • British Columbia,
  • Fraser River.

Subjects:

  • Fishes -- Diseases.,
  • Water -- Pollution -- British Columbia -- Fraser River.,
  • Wood-pulp industry -- By-products.

Book details:

Edition Notes

Bibliography: leaf 34.

Statementby J. A. Servizi, E. T. Stone and R. W. Gordon.
SeriesInternational Pacific Salmon Fisheries Commission. Progress report, no. 13
ContributionsStone, E. T., joint author., Gordon, R. W. joint author.
Classifications
LC ClassificationsSH346 .I62 no. 13
The Physical Object
Pagination34 l.
Number of Pages34
ID Numbers
Open LibraryOL6017695M
LC Control Number66076240
OCLC/WorldCa11742990

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The biodegradability of the bleach plant effluents from a Kraft pulp mill treated in the HAIB was evaluated using the modified Zahn-Wellens test. The inoculum came from a pulp mill wastewater treatment plant and the dissolved organic carbon (DOC) was used as the indicator of .   Two Kraft-pulp bleaching effluents from a sequence of treatments which include chlorine dioxide and caustic soda were treated by catalytic wet-air oxidation (CWAO) at T = K in trickle-bed and batch-recycle reactors packed with either TiO 2 extrudates or Ru (3 wt%)/TiO 2 catalyst. Chemical analyses (TOC removal, color, HPLC) and bioassays (h and min acute toxicity tests Cited by: This leaves Kraft pulping as the primary source of toxic pulp mill effluents. Figure 1 and the following brief overview of the operation of a conventional Kraft pulp mill and bleach plant describe pollution sources. Figure 1. General Flow Diagram for a Kraft Pulp Mill and Bleach Plant alterations in pulp processing and waste treatment at. Isolation and identification of constituents toxic to juvenile rainbow trout (Salmo gairdneri) in caustic extraction effluents from kraft pulp mill bleach plants. J. Fish. Res. Bd. Canada. Leach, J. M. and Thakore, A. N. (b). Identification of the toxic con- stituents in kraft mill bleach plant effluents.

Kraft bleach plant effluent and the proven toxicity of wastewater from pulp and paper industry poses a great danger to all components of the environment. findings related to the treatment. Anaerobic Treatment of Cellulose Bleach Plant Wastewater: Chlorinated Organics and Genotoxicity Removal Brazilian Journal of Chemical Engineering Vol. 28, No. 04, pp. - , October - December, composition of the effluents could be the result of the internal processes of pulp . This review describes medium and high molecular weight organic material found in wastewaters from pulp and paper industry. The aim is to review the versatile pollutants and the analysis methods for their determination. Among other pollutants, biocides, extractives, and lignin-derived compounds are major contributors to harmful effects, such as toxicity, of industrial wastewaters. The kraft process (also known as kraft pulping or sulfate process) is a process for conversion of wood into wood pulp, which consists of almost pure cellulose fibers, the main component of kraft process entails treatment of wood chips with a hot mixture of water, sodium hydroxide (NaOH), and sodium sulfide (Na 2 S), known as white liquor, that breaks the bonds that link lignin.

69 % in E- stage & % in combined bleach plant effluent of wood based mill. Earl and Reeve, has been reported that AOX reductions of only up to 30% can be achieved by neutralization of kraft mill bleach plant effluent to pH 7 with caustic soda. Milosevich, and Hill, () studied the treatment of bleach plant. • Waste • Noise Wastewater Pulp and paper manufacturing activities may generate wastewater discharges at a rate of cubic meters per metric ton (m3/t) of product. Product is measured as air dry pulp (ADP2) in pulp mills, and as weight of paper sold in paper and board mills. Prior to treatment pulp mill effluents are high in. Bleaching of Pulp By: Peter Hart, MeadWestvaco Corporation, and Alan W. Rudie, USDA Forest Service TABLE OF CONTENTS Chapter 1. Introduction Previous Pulp Bleaching Books Current Pulp Bleaching Book Organization of the Current Book References Cited Chapter 2. Oxygen Delignification Introduction EPA promulgated initial Effluent Guidelines and Standards for the Pulp, Paper and Paperboard category (40 CFR Part ) in and , amended the regulations in and , and promulgated a major amendment covering toxic pollutants in The Effluent Guidelines are incorporated into NPDES permits for direct dischargers direct dischargerA point source that discharges pollutants to.