TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Introduced: January 1980

Classification Context

Section:: CHEMISTRY; METALLURGY
Class:: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Subclass:: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Description

Covers chemical and physical processes for purifying, conditioning, or processing water, waste water, sewage, and sludge streams. Includes desalination, softening, disinfection, removal of suspended solids and dissolved contaminants, odor control, and sludge dewatering or disposal methods. This subclass encompasses treatment technologies such as coagulation, filtration, ion exchange, biological treatment, and oxidation processes applied across municipal, industrial, and agricultural applications.

Scope Notes

Glossary: Sludge Solids that remain after wastewater treatment. This material may be separated, treated and composted into fertiliser. | Limiting references: Processes for making harmful chemical substances harmless, or less harmful, by effecting a chemical change in the substances Settling tanks and filter devices Adding materials to water to prevent corrosion Cleaning or keeping clear the surface of open water, e.g. the sea Devices for cleaning or keeping clear the surface of open water Methods for obtaining or collecting drinking water or tap water Treating radioactively-contaminated liquids | Application references: Special arrangements on waterborne vessels of installations for producing fresh water Special arrangements on waterborne vessels of installations for treating waste water or sewage.

Related Keywords

AERATING of water, waste water or sewageDESALINATION of seawaterpurification of FOUL waterpreventing formation of SCALE(S) by adding agents to waterdesalination or purification of SEA waterSEPARATING of sewage in sewage purification plantsSEPTIC tanksSEQUESTERING of impurities by adding agents to waterapparatus for treating SEWAGEseparating or screening SEWAGEtreatment of SEWAGEdrying sewage SLUDGESTERILISING of watersewage settling TANKSTREATMENT of water, waste water, sewage or sludgetreatment of WASTE wateramelioration of potable WATERdegassing WATERde-mineralisation of WATERdistilling WATERflocculation or precipitation of impurities from WATERmaking salt WATER potablepurifying WATERsoftening WATERsterilising WATERtreating foul or waste WATER

8 direct subcodes

Child Classifications

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C02F 1/00 Treatment of water, waste water, or sewage
C02F 101/00 Nature of the contaminant
C02F 103/00 Nature of the water, waste water, sewage or sludge to be treated
C02F 11/00 Treatment of sludge; Devices therefor
C02F 3/00 Biological treatment of water, waste water, or sewage
C02F 5/00 Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
C02F 7/00 Aeration of stretches of water
C02F 9/00 Multistage treatment of water, waste water or sewage