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DISPOSAL METHOD OF SLUDGE-LIGNIN (WASTE OF THE BAIKAL PULP AND PAPER COMBINE) BY INTERACTING WITH QUICKLIME

O.B. Rudakov1, V.I. Shcherbakov1, O.B. Kukina1, Y.O. Rudakov1,

K.N. Strunkina2

1Voronezh state technical University,

Russian Federation, 394006, Voronezh, ul. 20-letia Oktyabrya, 84

2Voronezh state University,

Russian Federation, 394018, Voronezh, University square, 1

* Address for correspondence: Rudakov Oleg Borisovich, E-mail: robi57@mail.ru

The article describes the method of deodorization and dehydration of the sludge-lignin of the Baikal Pulp and Paper Combine by its interaction with quicklime. The addition of quicklime to sludge-lignin in the amount of 15-20% neutralizes it within 8-15 days. CaO binds volatile sulfur-containing components, organic functional groups and water. The considered method allows to effectively reduce unpleasant odor to the level of 2-3 points (on a 5-point scale) and decrease the moisture content of the resulting product by 45-50%. Such processing turns the product into a free-flowing powder, which is convenient to transport and further use. This recycling technology is characterized by simple instrumentation and the use of an inexpensive chemical reagent. The high economic efficiency of the method makes it promising for solving environmental problems of the Baikal Pulp and Paper Combine.

Keywords: Lake Baikal, Baikal Pulp and Paper Combine, sludge-lignin, waste disposal, quick lime, ecology

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