【発明の名称】パルプミルプロセス流の脱色法 - Advanced Separation Technology-Inco-Porate

Title:

【発明の名称】パルプミルプロセス流の脱色法

Document Type and Number:

Japanese Patent JPH0718114

Kind Code:

B2

Abstract:

Pulp mill effluent streams having a pH greater than 7.0 are decolourized by reducing the acidity of the effluent to below pH 4.0 so that colour bodies are precipitated from the effluent. The effluent is filtered and organic compounds are absorbed from the filtrate on carbon particles which are regenerated by a caustic solution.

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Inventors:

Doublet. Wesberry

Application Number:

JP26840085A

Publication Date:

March 01, 1995

Filing Date:

November 30, 1985

Export Citation:

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Assignee:

Advanced Separation Technology-Inco-Porate

International Classes:

C02F1/28; C02F9/00; D21C9/10; D21C1/02; D21C11/04; (IPC1-7): D21C11/04; C02F1/28

Domestic Patent References:

JP4971201A

Attorney, Agent or Firm:

Aoki Akira (4 outside)

Next Patent: パルスなしスクリーン