Treatment and circulating reuse method for paper-making waste water
The process for treating waste paper-making liquid including black liquor and waste bleaching liquor includes such steps as physical-chemical pretreating to separate straw pulp, acidifying separation, neutralization, acid-alkali separation and decolouring, and features reclaiming of straw pulp, lign...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The process for treating waste paper-making liquid including black liquor and waste bleaching liquor includes such steps as physical-chemical pretreating to separate straw pulp, acidifying separation, neutralization, acid-alkali separation and decolouring, and features reclaiming of straw pulp, lignin and caustic soda in waste water, reuse of treated water, no secondary pollution, computerized monitor and low cost. |
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