ClassID:

86344

C02F3/121 - CPC Classification

Classification description:

Biological treatment of water, waste water, or sewage; Aerobic processes; Activated sludge processes; Particular type of activated sludge processes Multistep treatment

Recent Application in this class:
#1
20260078035
2026-03-19

PROCESS AND SYSTEM FOR SIMULTANEOUS NITRIFICATION AND DENITRIFICATION

#2
20250353764
2025-11-20

WATER TREATMENT DEVICE AND WATER TREATMENT METHOD

#3
20250282662
2025-09-11

WASTEWATER TREATMENT SYSTEM AND WASTEWATER TREATMENT METHOD USING THE SAME

#4
20250154039
2025-05-15

Biofilm Carrier Media in Moving Bed Biofilm Reactor Processes

#5
20250002386
2025-01-02

MEMBRANE BIOREACTOR SYSTEM FOR TREATING WASTEWATER USING OXYGEN

#6
20240425398
2024-12-26

Biofilm Carrier Media in Moving Bed Biofilm Reactor Processes

#7
20240368013
2024-11-07

Bioreactor for Home Septic Unit

#8
20240308890
2024-09-19

BIOLOGICAL TREATMENT METHOD AND BIOLOGICAL TREATMENT SYSTEM

#9
20230357063
2023-11-09

Method and device to optimize plug flow in an aerobic biological wastewater treatment reactor

#10
20220356094
2022-11-10

System for cleaning wastewater

#11
20220194831
2022-06-23

System and Method for Treating Wastewater That Includes Biosorption and Filtration

#12
20220153619
2022-05-19

Method for biologically treating ammonium perchlorate with pooling of the microfiltration

#13
20220064042
2022-03-03

MULTISTAGE SEPARATION REACTION TANK AND METHOD FOR TREATING SEWAGE SLUDGE BY USING ALKANE-BASED SOLVENT USING SAME

#14
20210371312
2021-12-02

Integration of fermentation and gasification

#15
20210206677
2021-07-08

Organic wastewater treatment apparatus

#16
20210179462
2021-06-17

Method for treating organic wastewater, and device for treating organic wastewater

#17
20210155515
2021-05-27

ORGANIC INDUSTRIAL TAILWATER TREATMENT METHOD BASED ON SIMULTANEOUS COMBINATION OF OZONATION AND BIODEGRADATION (SCOB)

#18
20210047215
2021-02-18

WASTEWATER TREATMENT METHOD

#19
20210047214
2021-02-18

SYSTEMS AND METHODS FOR WATER AND SOLIDS TREATMENT

#20
20210047204
2021-02-18

Biofilm carrier media in moving bed biofilm reactor processes

#21
20210024396
2021-01-28

Method of treating sludge

#22
20200330902
2020-10-22

Container-type apparatus with a suspended particle system for wastewater treatment

#23
20200270154
2020-08-27

Method for treating and recycling waste slurry in bobbin paper production

#24
20200267948
2020-08-27

Water purification system and filtration block

#25
20200189945
2020-06-18

Apparatus for the bio-remediation of a waste water composition

#26
20200156973
2020-05-21

Integration of fermentation and gasification

#27
20200131066
2020-04-30

SYSTEMS AND METHODS FOR UPGRADING CONVENTIONAL ACTIVATED SLUDGE PLANTS

#28
20200131065
2020-04-30

Sewage/wastewater treatment system using granular activated sludge and membrane bio-reactor and sewage/wastewater treatment method using the same

#29
20200095146
2020-03-26

Method for a water treatment in a system comprising at least one sequencing batch reactor and a moving bed biofilm reactor

#30
20200079669
2020-03-12

Water treatment apparatus for removing nitrogen contained in raw water and water treatment method using the same

#31
20200002202
2020-01-02

Controlling digester biosolids and wastewater activated sludge systems

#32
20190319288
2019-10-17

Preparation of a new type of composite anode and microbial fuel cell based on nitrogen doped biological carbon and porous volcanic rocks

#33
20190284075
2019-09-19

Methods for enhancing the dewaterability of sludge with enzyme treatment

#34
20190248688
2019-08-15

METHOD OF TREATING WASTEWATER AND SYSTEMS THEREOF

#35
20190218125
2019-07-18

Method for treating a black and odorous water body with a bionic process

#36
20190218124
2019-07-18

Device for treating a black and odorous water body with a bionic process

#37
20190152820
2019-05-23

Method of combining recuperative digestion with a contact tank and dissolved air flotation

#38
20190135666
2019-05-09

Reduction of substances in contaminated fluids using a naturally occurring biological growth media

#39
20190100452
2019-04-04

Biological removal of micropollutants from wastewater

#40
20190084855
2019-03-21

Vermicomposting method and system for conversion and treatment of organic waste streams

#41
20190039925
2019-02-07

System and method for treating wastewater

#42
20180354827
2018-12-13

Bioreactor for wastewater treatment

#43
20180282187
2018-10-04

WASTEWATER TREATMENT SYSTEM AND WASTEWATER TREATMENT METHOD

#44
20180280835
2018-10-04

CONTAINER-TYPE APPARATUS WITH A SUSPENDED PARTICLE SYSTEM FOR WASTEWATER TREATMENT

#45
20180251389
2018-09-06

Home sewage treatment system

#46
20180230034
2018-08-16

Continuous process for the treatment of wastewater

#47
20180230031
2018-08-16

BIOREACTOR FOR TREATING WATER FLUID(S) BY BIOMASS

#48
20180186672
2018-07-05

Process and facility for the treatment of livestock waste

#49
20180170781
2018-06-21

Digestion of elemental sulfur in bioreactor during biological oxidation of sulfide in wastewater and groundwater

#50
20180134594
2018-05-17

WASTEWATER TREATMENT SYSTEM DESIGN

#51
20180118593
2018-05-03

Method for biological wastewater purification

#52
20180099886
2018-04-12

Method for biological wastewater purification with phosphorous removal

#53
20180099885
2018-04-12

Apparatus for sewage deep bed denitrification with high pollutant carrying capacity and low energy consumption, and method for running the same

#54
20180009690
2018-01-11

Flow equalization reactor having multiple wastewater treatment zones

#55
20170368485
2017-12-28

METHOD AND INSTALLATION FOR PRE-TREATMENT EMPLOYING A FILTER CAKE

#56
20170327395
2017-11-16

System and method for treating wastewater

#57
20170320761
2017-11-09

Water treatment reactor

#58
20170313607
2017-11-02

Water treatment system and method

#59
20170291839
2017-10-12

Anammox process at waste water plant

#60
20170066669
2017-03-09

INTEGRATED HYDRODYNAMIC SEPARATOR (HDS) STRUCTURE, EFFLUENT CHANNEL FOR SEPARATING MIXED LIQUOR SUSPENDED SOLIDS (MLSS) IN WASTEWATER TREATMENT

#61
20160368797
2016-12-22

Sludge treatment system and sludge treatment method

#62
20160368796
2016-12-22

Seawater pretreatment device

#63
20160200609
2016-07-14

Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle

#64
20160122215
2016-05-05

REACTOR SETUP

#65
20160107908
2016-04-21

Wastewater treatment system design

#66
20160083268
2016-03-24

Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle

#67
20150336826
2015-11-26

Hybrid wastewater treatment

#68
20150284279
2015-10-08

Installation and method for wastewater treatment

#69
20150251938
2015-09-10

Wastewater overflow systems and methods

#70
20150210574
2015-07-30

Treatment using fixed film processes and ballasted settling

#71
20150108067
2015-04-23

Reduction of substances in contaminated fluids using a naturally occurring biological growth media

#72
20150048025
2015-02-19

Treatment of iron contaminated liquids with an activated iron solids (AIS) process

#73
20150027947
2015-01-29

Activated sludge treatment method, and method for upgrading existing waste water treatment equipment using said method

#74
20150021264
2015-01-22

TREATMENT METHODS AND TREATMENT SYSTEMS FOR PLANT EFFLUENTS

#75
20140339156
2014-11-20

System for biological treatment of water and wastewater

#76
20140311959
2014-10-23

Wastewater treatment device

#77
20140262999
2014-09-18

Reactor for sewage treatment

#78
20140224730
2014-08-14

Wastewater treatment process including irradiation of primary solids

#79
20140224719
2014-08-14

Wastewater treatment system including irradiation of primary solids

#80
20140138309
2014-05-22

Device and method for sewage treatment using constant magnetic field

#81
20140131274
2014-05-15

Method and system for treating waste material

#82
20140124460
2014-05-08

Method and system for filtration and filtration cake layer formation

#83
20140083934
2014-03-27

Biological two-stage contaminated water treatment system

#84
20140061126
2014-03-06

Method and system for filtration and filtration cake layer formation

#85
20140034573
2014-02-06

Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods

#86
20130315803
2013-11-28

Liquid-liquid-liquid three-phase continuous countercurrent extraction device and use thereof

#87
20130015125
2013-01-17

METHOD AND DEVICE FOR BIOLOGICAL WASTEWATER PURIFICATION

#88
20120292251
2012-11-22

METHOD AND APPARATUS FOR MONITORING BIOLOGICAL ACTIVITY AND CONTROLLING AERATION IN AN ACTIVATED SLUDGE PLANT

#89
20120261337
2012-10-18

System and method for wastewater treatment

#90
20120055934
2012-03-08

MULTI-FUNCTION WASTEWATER TREATMENT BASIN

#91
20120055883
2012-03-08

Modular wastewater treatment system management

#92
20120055859
2012-03-08

Wastewater treatment system design

#93
20110253626
2011-10-20

Method and a device for biologically treating a contaminated liquid feedstock including a dispersible and digestible organic liquid phase

#94
20110186491
2011-08-04

Aerobic treatment/clarifier system for use in an aerobic wastewater treatment system

#95
20110163022
2011-07-07

Integrated sewage treatment plant

#96
20110113840
2011-05-19

Method for treating and/or pretreating liquid manure or biogas plant reject for the elimination of harmful substances, particularly nitrogen, phosphorus, and odor molecules

#97
20110089105
2011-04-21

Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods

#98
20110068056
2011-03-24

Method for the Biological Treatment of an Effluent and Associated Plant

#99
20110017663
2011-01-27

SYSTEM AND METHOD FOR SIMULTANEOUS BIOLOGICALLY MEDIATED REMOVAL OF CONTAMINANTS FROM CONTAMINATED WATER

#100
20110005284
2011-01-13

Wastewater treatment system including irradiation of primary solids

#101
20100191377
2010-07-29

Infiltration/inflow control for membrane bioreactor

#102
20100187187
2010-07-29

Plant for aerobic and anaerobic digestion treatment by PFR

#103
20100012580
2010-01-21

Systems and methods for wastewater treatment

#104
20100006486
2010-01-14

Unit for integrated waste water biological treatment

#105
20090277832
2009-11-12

Method for biological disposal of organic wastewater and biological disposal apparatus

#106
20090145844
2009-06-11

SEQUENCING BATCH MEMBRANE BIOREACTOR AND METHOD THEREOF

#107
20080314806
2008-12-25

Waste water purification apparatus

#108
20080272035
2008-11-06

System for Water Treatment

#109
20080257809
2008-10-23

System and method for processing organic waste material

#110
20080245729
2008-10-09

Process for aerobic-thermophilic stabilization and disinfection of sludge

#111
20080210627
2008-09-04

Process for the aerobic-thermophilic stabilization and disinfection of sludge

#112
20080073266
2008-03-27

Continuous multistage thermophilic aerobic and aerobic-anaerobic sludge treatment process

#113
20070251868
2007-11-01

Method and apparatus for nitrogen removal and treatment of digester reject water in wastewater using bioagumenation

#114
20070170115
2007-07-26

Methods for treatment of wastewater with powdered natural lignocellulosic material

#115
20070108124
2007-05-17

Method and a plant for waste water treatment

#116
20070102356
2007-05-10

Method for nitrogen removal and treatment of digester reject water in wastewater using bioaugmentation

#117
20070068869
2007-03-29

Waste water treatment method and waste water treatment apparatus

#118
20060249448
2006-11-09

Process for biological treatment of organic wastewater and apparatus therefor

#119
20060096916
2006-05-11

System and method for processing organic waste material

#120
20060070938
2006-04-06

Continuous multistage thermophilic aerobic and aerobic-anaerobic sludge treatment systems

#121
20060032821
2006-02-16

Treatment of iron contaminated liquids with an activated iron solids (AIS) process

#122
20050161398
2005-07-28

Aerobic wastewater management system, apparatus, and method

#123
20050126995
2005-06-16

Aerobic wastewater management system, apparatus, and method

#124
16370254
2020-03-10

Conversion of secondary clarifier into an oxic bioreactor by superoxygenation

#125
15870668
2019-06-04

Double coil effluent dispersal apparatus and method