ClassID:

86374

C02F3/22 - CPC Classification

Classification description:

Biological treatment of water, waste water, or sewage; Aerobic processes; Activated sludge processes using circulation pipes

Sub-classes:
Recent Application in this class:
#1
20250197262
2025-06-19

Wastewater Biological Selector System and Methods for Treating Wastewater Process Fluid

#2
20230020881
2023-01-19

HIGH-PRECISION, HIGH-EFFICIENCY RECIRCULATION SYSTEM FOR PRESERVING MULTIPLE-DENSITY BIOMASS AND ATTACHED BIOFILM IN WASTEWATER TREATMENT BIOREACTORS

#3
20220411299
2022-12-29

Gas-liquid recycling device and method of using same

#4
20210363038
2021-11-25

Device for sewage treatment

#5
20210031153
2021-02-04

Apparatus and arrangement for introducing a gas into a main medium in particular in waste water treatment

#6
20190359921
2019-11-28

Apparatus and method for treatment of wet organic matter to produce biogas

#7
20190248687
2019-08-15

System and method for combined microorganism degradation and air sparging-soil vapor extraction of oil-containing sludge

#8
20190039931
2019-02-07

Multi-stage wastewater treatment and hydroponic farming device

#9
20180280836
2018-10-04

System for biological aerobic activated sludge process with hydrodynamic solid separation

#10
20170321702
2017-11-09

System and method for aeration by air infusion

#11
20170253515
2017-09-07

Dual return activated sludge process in a flow-equalized wastewater treatment system

#12
20170211808
2017-07-27

Reactor for hydrothermal carbonization with optimized mixture of sludge and steam

#13
20170210651
2017-07-27

Pulsating, horizontal flow wastewater treatment system

#14
20170128895
2017-05-11

Machine and process for providing a pressurized liquid stream with dissolved gas

#15
20170088450
2017-03-30

Membrane aerated biofilm reactor (MABR)

#16
20160200615
2016-07-14

Dual return activated sludge process in a flow-equalized wastewater treatment system

#17
20160145130
2016-05-26

Water treatment device

#18
20160122216
2016-05-05

Aerator/digester for water treatment

#19
20160115056
2016-04-28

Container, series of containers and method for treating liquids

#20
20150183671
2015-07-02

Septic system for a grease trap reservoir, including an aeration subsystem to compress grease and/or waste fluid and to inject air, and an optional fluid recirculation system with a control station

#21
20150076717
2015-03-19

TREATMENT PLANT FOR SEWAGE TREATMENT

#22
20140263047
2014-09-18

Wastewater treatment system

#23
20140144848
2014-05-29

Vortex air inlet system, compressor system and related method

#24
20130220123
2013-08-29

Distributed aeration system and control architecture

#25
20130206686
2013-08-15

Limited volume waste water SBR treatment system and process

#26
20120175301
2012-07-12

Method for treating contaminated water

#27
20120125841
2012-05-24

APPARATUS AND METHOD FOR DISPOSAL AND TREATMENT OF WASTE WATER, SEWAGE AND/OR EFFLUENT

#28
20110309034
2011-12-22

Device and method for dissolving gas into a liquid

#29
20110089582
2011-04-21

System for feeding gas into liquid

#30
20090302487
2009-12-10

Wastewater treatment system and method of using same

#31
20090266763
2009-10-29

Water treatment apparatus and water treatment method

#32
20090200687
2009-08-13

TREATMENT SYSTEM FOR LIQUID

#33
20070176307
2007-08-02

Wastewater treatment system and method of using same

#34
20070069403
2007-03-29

Two-stage injector-mixer

#35
20070007202
2007-01-11

Wastewater treatment system and method

#36
20060180546
2006-08-17

WASTEWATER TREATMENT SYSTEM AND METHOD

#37
20060118484
2006-06-08

Process and device for biological treatment of a suspension in a bioreactor

#38
20050126995
2005-06-16

Aerobic wastewater management system, apparatus, and method