Publication

Flocculant for promoting solid sedimentation from coal-containing wastewaters

Jutta Christine Wandrey
1983
Patents

Abstract

An aq. soln. of cationic, high mol. wt. poly(diallyldimethylammonium chloride) (I) [26062-79-3], synthesized in very alk. soln. with a ternary initiation system, is added in amts. of 0.25-4.0 mL/L to accelerate sedimentation of solid particles from coal-contg. wastewaters. Thus, 0.5 mL of a 0.1% aq. soln. of I was mixed thoroughly with 5-10 g/L coal-solids contg. wastewater from a briquet factory to produce macroflocs and completely sep. coal particles and water in 100 g/L and a supernatant contg.

Official source

https://infoscience.epfl.ch/entities/publication/266fafca-bee4-478d-b904-7b5f2de62096

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Jutta Christine Wandrey
1983
Patents

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/266fafca-bee4-478d-b904-7b5f2de62096

About this result

Related concepts (32)

Flocculation

In colloidal chemistry, flocculation is a process by which colloidal particles come out of suspension to sediment in the form of floc or flake, either spontaneously or due to the addition of a clarifying agent. The action differs from precipitation in that, prior to flocculation, colloids are merely suspended, under the form of a stable dispersion (where the internal phase (solid) is dispersed throughout the external phase (fluid) through mechanical agitation) and are not truly dissolved in solution.

Wastewater treatment

Wastewater treatment is a process which removes and eliminates contaminants from wastewater and converts this into an effluent that can be returned to the water cycle. Once returned to the water cycle, the effluent creates an acceptable impact on the environment or is reused for various purposes (called water reclamation). The treatment process takes place in a wastewater treatment plant. There are several kinds of wastewater which are treated at the appropriate type of wastewater treatment plant.

Industrial wastewater treatment

Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment. Some industrial facilities generate wastewater that can be treated in sewage treatment plants.

Related publications (32)

Flocculant for promoting solid sedimentation from coal-containing wastewaters

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