LIME-BASED COMPOSITIONS, METHOD OF PREPARING THEREOF AND APPLYING THEREOF FOR PROCESSING WATERS AND SLUDGE Russian patent published in 2015 - IPC C02F1/56 C02F11/14 B01D21/01 

FIELD: chemistry.

SUBSTANCE: inventions can be used for processing sewage waters and conditioning sludge before its dehydration. A lime-based composition for processing waters and sludge contains, at least, one mineral agent, which contains at least lime and at least one linear, branched and/or transversely cross-linked hydrophilic organic polymer of a non-ionic, anionic, cationic or amphoteric origin. The mineral agent contains slaked lime in the solid phase, with the organic polymer being includes on the surface and inside the said solid phase of slaked lime, where the said lime-based composition represents a solid composition. The method of preparing the composition for processing waters and sludge includes the introduction of the mineral agent and a water solution, dispersion or an inverse emulsion, which contains the organic polymer and water, in contact. The method includes the realisation of a partial reaction of quicklime with all or a part of water, which contains the organic polymer, obtaining slaked lime in the solid phase, including the organic polymer.

EFFECT: inventions provide the effective conditioning of sludge to be dehydrated due to the distribution of the polymer in a smaller amount relative to the mineral agent.

15 cl, 7 tbl, 5 ex