ClassID:

86581

C02F2203/00 - CPC Classification

Classification description:

Apparatus and plants for the biological treatment of water, waste water or sewage

Sub-classes:
Recent Application in this class:
#1
20250236546
2025-07-24

PROCESS AND APPARATUS FOR NITRITATION USING MEMBRANE AERATED BIOFILM REACTOR

#2
20250230079
2025-07-17

MICRON IRON-BASED PRIMARY BATTERY MATERIAL, PREPARATION METHOD AND MEMBRANE BIOREACTOR SYSTEM

#3
20230079372
2023-03-16

Process and apparatus for nitritation using membrane aerated biofilm reactor

#4
20220234927
2022-07-28

Mixing systems and methods of mixing

#5
20220073808
2022-03-10

Multivalent iron bio-inhibitor from waste bauxite residue to control reservoir souring

#6
20220064043
2022-03-03

Process for enhanced anaerobic digestion of sludge by alcoholization of food waste

#7
20220048800
2022-02-17

Biological filler comprising 1,5-dihydroxyanthraquinone and thiobacillus denitrificans population and method of using the same for nitrogen removal from wastewater

#8
20210363040
2021-11-25

Urban river channel direct purification device

#9
20210039974
2021-02-11

Mixing systems and methods of mixing

#10
20200131065
2020-04-30

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

#11
20190389754
2019-12-26

Module, reactor, system and method for treating water

#12
20190135668
2019-05-09

Mixing systems and methods of mixing

#13
20170247276
2017-08-31

Module, reactor, system and method for treating water

#14
20170203984
2017-07-20

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

#15
20170097647
2017-04-06

Systems and methods for optimizing water utility operation

#16
20170066669
2017-03-09

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

#17
20160368797
2016-12-22

Sludge treatment system and sludge treatment method

#18
20160318781
2016-11-03

MIXING SYSTEMS AND METHODS OF MIXING

#19
20160176733
2016-06-23

Constructed wetland sewage treatment system

#20
20160122217
2016-05-05

Algal system for improving water quality

#21
20160115054
2016-04-28

Systems and methods for enhanced facultative biosolids stabilization

#22
20160096761
2016-04-07

Systems and methods for processing organic compounds

#23
20160075577
2016-03-17

Moving bed media flow equalization reactor

#24
20150336831
2015-11-26

Wastewater treatment process and system

#25
20150336828
2015-11-26

Method for improving quality of aquaculture pond water

#26
20150336827
2015-11-26

Biofilm media, treatment system and method of wastewater treatment

#27
20150336826
2015-11-26

Hybrid wastewater treatment

#28
20150329395
2015-11-19

Photobioreactor

#29
20150329393
2015-11-19

Thermo-oxidation of municipal wastewater treatment plant sludge for production of Class A biosolids

#30
20150251938
2015-09-10

Wastewater overflow systems and methods

#31
20150175454
2015-06-25

Recycling activated sludge by hydrodynamic seperator (HDS) to enable high MLSS bioreactor to process high influent flow and/or high strength wastewater

#32
20150166381
2015-06-18

Apparatus for biological sewage treatment

#33
20150164108
2015-06-18

METHODS OF PROCESSING WASTE ACTIVATED SLUDGE

#34
20150060357
2015-03-05

Wastewater treatment apparatus capable of performing both initial rainwater overflow treatment and primary treatment, and wastewater treatment method according to said apparatus

#35
20150053612
2015-02-26

METHOD AND SYSTEM FOR TREATING WASTE MATERIAL

#36
20150048012
2015-02-19

Bioreactor

#37
20150041376
2015-02-12

Integrated water treatment system

#38
20150027179
2015-01-29

Syngas biomethanation process and anaerobic digestion system

#39
20150014245
2015-01-15

Modular wastewater treatment plant

#40
20140374348
2014-12-25

Method for treating sewage sludge and wastewater treatment plant

#41
20140374342
2014-12-25

ENVIRONMENTAL WASTE WATER CULTIVATION SYSTEM PROGRAM

#42
20140367329
2014-12-18

Anaerobic water purification system and method for treating a liquid

#43
20140217015
2014-08-07

Use of primary sludge for carbon source in an aerated-anoxic bioreactor system

#44
20130203144
2013-08-08

Syngas biomethanation process and anaerobic digestion system

#45
20130153492
2013-06-20

Wastewater treatment system

#46
20120312745
2012-12-13

Mixing systems and methods of mixing

#47
20120097606
2012-04-26

METHOD FOR TREATING WASTEWATER CONTAINING AMMONIA NITROGEN

#48
20110266202
2011-11-03

Wastewater treatment apparatus with two-stage multimedia biological filtration process

#49
20110084416
2011-04-14

Mixing systems and methods of mixing

#50
20110079060
2011-04-07

METHODS OF REDUCING GREENHOUSE EMISSIONS FROM ANIMAL MANURE

#51
20100006500
2010-01-14

SAF system and method involving specific treatments at respective stages

#52
20080073267
2008-03-27

Method and system for retrofitting an existing water treatment system

#53
20070187323
2007-08-16

Environmental Waste Water Cultivation System

#54
20050189277
2005-09-01

Denitrification system for nitrified wastewater or nitrified water