Agent for the purification of waste waters and process for its production
The present invention is directed to a chemical composition for treating contaminated waste waters, particularly waste waters in the form of oily emulsions, to adsorb the contaminants between platelets of activated bentonite and encapsulate or trap the contaminants between the platelets so that the contaminants cannot be leached out into the waste water. The composition includes an acid, such as adipic acid; a coagulant such as aluminum sulfate or ferric sulfate; an activated betonite; lime CaO or Ca(OH)/sub 2/; and bentonite containing at least about 5% by weight calcium aluminum silicate. The invention is also directed to a process for producing the chemical composition, and a method of treating contaminated waste waters with the chemical composition. The composition may include a polymeric flocculating agent, such as polyacrylamide having a molecular weight of at least one million, for flocculation of the encapsulated activated bentonite, or the flocculating agent may be added to the waste water separately, after encapsulation.
- Assignee:
- Colloid Piepho
- Patent Number(s):
- US 4415467
- OSTI ID:
- 5310025
- Resource Relation:
- Patent File Date: Filed date 1 Jun 1982; Other Information: PAT-APPL-383608
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
WASTE WATER
PURIFICATION
WASTE PROCESSING
ADDITIVES
ADIPIC ACID
ADSORPTION
ALUMINIUM SULFATES
BENTONITE
CALCIUM OXIDES
CHEMICAL COMPOSITION
FLOCCULATION
POLYMERS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
CALCIUM COMPOUNDS
CARBOXYLIC ACIDS
CHALCOGENIDES
CLAYS
DICARBOXYLIC ACIDS
HYDROGEN COMPOUNDS
LIQUID WASTES
MANAGEMENT
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PRECIPITATION
PROCESSING
SEPARATION PROCESSES
SORPTION
SULFATES
SULFUR COMPOUNDS
WASTE MANAGEMENT
WASTES
WATER
320604* - Energy Conservation
Consumption
& Utilization- Municipalities & Community Systems- Municipal Waste Management- (1980-)