Treatment of waste sludges from the pulp and paper industry

Hilkka Kyllönen

Research output: Book/ReportReport

Abstract

A new problem related to the purification of waste waters has arisen in the pulp and paper industry. Treatment and disposal of aqueous waste sludges, in particular biological sludges, are both laborious and ex-pensive. As much as about 50 % of the total cost of waste water treat-ment is estimated to be due to sludge treatment and disposal. About 100 000t/a of excess biological sludge (dry matter) is expected to be produced by the Finnish pulp and paper industry by the end of the 1990s. The aim of this study was to survey factors affecting the dewatering characteristics of waste sludges and to review present different sludge conditioning and treatment alternatives. Various biochemical, chemical and physical characteristics of the sludge determine its behaviour during settling and dewatering. These characteristics are dependent on the quality of the waste water and on the operating parameters of the treatment process. New, more efficient sludge treatment methods are being sought, to make efficient utilization of sludges possible. Several new sludge treatment methods have been examined and some of them already applied in the pulp and paper industry.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages48
ISBN (Print)951-38-2737-2
Publication statusPublished - 1986
MoE publication typeD4 Published development or research report or study

Publication series

SeriesValtion teknillinen tutkimuskeskus. Tiedotteita
Number637
ISSN0358-5085

Fingerprint

pulp and paper industry
sludge
dewatering
settling behavior
conditioning
purification
dry matter
cost
sludge treatment
waste water

Keywords

  • sludge
  • pulping industry
  • paper industry
  • waste treatment

Cite this

Kyllönen, H. (1986). Treatment of waste sludges from the pulp and paper industry. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tiedotteita, No. 637
Kyllönen, Hilkka. / Treatment of waste sludges from the pulp and paper industry. Espoo : VTT Technical Research Centre of Finland, 1986. 48 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 637).
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Kyllönen, H 1986, Treatment of waste sludges from the pulp and paper industry. Valtion teknillinen tutkimuskeskus. Tiedotteita, no. 637, VTT Technical Research Centre of Finland, Espoo.

Treatment of waste sludges from the pulp and paper industry. / Kyllönen, Hilkka.

Espoo : VTT Technical Research Centre of Finland, 1986. 48 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 637).

Research output: Book/ReportReport

TY - BOOK

T1 - Treatment of waste sludges from the pulp and paper industry

AU - Kyllönen, Hilkka

PY - 1986

Y1 - 1986

N2 - A new problem related to the purification of waste waters has arisen in the pulp and paper industry. Treatment and disposal of aqueous waste sludges, in particular biological sludges, are both laborious and ex-pensive. As much as about 50 % of the total cost of waste water treat-ment is estimated to be due to sludge treatment and disposal. About 100 000t/a of excess biological sludge (dry matter) is expected to be produced by the Finnish pulp and paper industry by the end of the 1990s. The aim of this study was to survey factors affecting the dewatering characteristics of waste sludges and to review present different sludge conditioning and treatment alternatives. Various biochemical, chemical and physical characteristics of the sludge determine its behaviour during settling and dewatering. These characteristics are dependent on the quality of the waste water and on the operating parameters of the treatment process. New, more efficient sludge treatment methods are being sought, to make efficient utilization of sludges possible. Several new sludge treatment methods have been examined and some of them already applied in the pulp and paper industry.

AB - A new problem related to the purification of waste waters has arisen in the pulp and paper industry. Treatment and disposal of aqueous waste sludges, in particular biological sludges, are both laborious and ex-pensive. As much as about 50 % of the total cost of waste water treat-ment is estimated to be due to sludge treatment and disposal. About 100 000t/a of excess biological sludge (dry matter) is expected to be produced by the Finnish pulp and paper industry by the end of the 1990s. The aim of this study was to survey factors affecting the dewatering characteristics of waste sludges and to review present different sludge conditioning and treatment alternatives. Various biochemical, chemical and physical characteristics of the sludge determine its behaviour during settling and dewatering. These characteristics are dependent on the quality of the waste water and on the operating parameters of the treatment process. New, more efficient sludge treatment methods are being sought, to make efficient utilization of sludges possible. Several new sludge treatment methods have been examined and some of them already applied in the pulp and paper industry.

KW - sludge

KW - pulping industry

KW - paper industry

KW - waste treatment

M3 - Report

SN - 951-38-2737-2

T3 - Valtion teknillinen tutkimuskeskus. Tiedotteita

BT - Treatment of waste sludges from the pulp and paper industry

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Kyllönen H. Treatment of waste sludges from the pulp and paper industry. Espoo: VTT Technical Research Centre of Finland, 1986. 48 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 637).