Anti-freezing sludge deep dehydration conditioner as well as preparation and application methods thereof

Abstract

The invention relates to an anti-freezing sludge deep dehydration conditioner as well as preparation and application methods thereof, and belongs to the technical field of sludge treatment. The anti-freezing sludge deep dehydration conditioner is prepared from the following components in parts by mass through reaction: 600 to 800 parts of polydimethyldiallyl ammonium chloride, 100 to 200 parts ofethylene glycol, 1 to 5 parts of a cationic guar gum polymer and 5 to 25 parts of polyferric sulfate. After sludge is conditioned by the anti-freezing sludge deep dehydration conditioner, the dehydration performance is obviously improved, and the water content of a filter cake can be reduced to 50-60% from 95-99.9%. The anti-freezing sludge deep dehydration conditioner has the advantages of low freezing point, convenience in transportation, storage and use, high conditioning speed, high sludge dehydration rate, less increment of sludge generated by the conditioner, simplicity in operation, high sludge volume reduction rate and the like, so that the anti-freezing sludge deep dehydration conditioner can be widely applied to sludge conditioning and enhanced deep dehydration.

Description

technical field

[0001] The invention relates to the technical field of sludge treatment, in particular to a frost-resistant sludge deep dehydration conditioner and its preparation and application methods. Background technique

[0002] Sludge is a kind of viscous substance produced in the process of sewage treatment. It is mainly composed of aerobic and anaerobic microorganisms. A complex mixture of organic matter, metals, germs, insect eggs, colloids, etc. The sludge discharged from the sewage treatment plant is generally a loose, colloidal paste with a water content of 95%-99%, with a light specific gravity (less than or equal to 1g / cm 3 ), bulky (dozens of times the volume of solids contained in it), strong thixotropy (not easy to dehydrate), and has the physical and chemical characteristics of easy corruption and odor, so it is very unfavorable for handling and transportation. It is estimated that by 2020, the amount of dry sludge produced in my country will be 8.4×10 ...