Assessment of the possibility of using the method of sludge-lignin dehydration of the Baikal Pulp and Paper Mill by the freeze-thaw method

 
 
 
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  • References
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  • Abstract


    An estimation of the possibility of dehydration of sludge-lignin of the Baikal Pulp and Paper Mill by the freeze-thaw method was carried out. Change of sludge-lignin structure, physicochemical properties and chemical composition after freeze-thaw are shown. Toxicity and chemical composition of the water solution separated from the sludge-lignin during its freeze-thaw is estimated. An increase in the rate of germination of seeds of the cress in the soil with the addition of the frozen-out sludge-lignin in the ratio "sludge-lignin-soil" 1:3-1:4 is shown. Possibility of application and recommendations for the use of freezed out sludge-lignin as an organic fertilizer is considered. Principal possibility of the worm transformation of sludge-lignin, previously dehydrated by the freeze-thaw method, by red Californian worms Eisenia foetida Andrei Bouche (1972) is shown. The issue of prospects for processing this waste in a fertile bio-soil is discussed. The latter can later be used for recultivation of the territory of the sludge accumulator plots of the Baikal Pulp and Paper Mill.

     

     


  • Keywords


    sludge-lignin, Baikal pulp and paper mill, freeze-thawing, sludge dewatering, worm transformation of sludge-lignin, organic fertilizer, bio-soil.

  • References


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Article ID: 11897
 
DOI: 10.14419/ijet.v7i2.23.11897




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