ClassID:

86464

C02F2101/106 - CPC Classification

Classification description:

Nature of the contaminant; Inorganic compounds Selenium compounds

Recent Application in this class:
#1
20260042083
2026-02-12

Surface Modified Support for Metal Adsorption and Methods of Using Thereof

#2
20260008707
2026-01-08

METHODS AND COMPOSITIONS FOR TREATING INDUSTRIAL WASTEWATER

#3
20250382202
2025-12-18

Metal-Organic Frameworks for the Removal of Multiple Liquid Phase Compounds and Methods for Using and Making Same

#4
20250360485
2025-11-27

Product for Adsorption

#5
20250340466
2025-11-06

METHODS OF TREATING WATER TO REMOVE SELENIUM OR MERCURY

#6
20250288971
2025-09-18

Heavy Metal and Hydrocarbon Filter and Methods of Use

#7
20250206646
2025-06-26

PROCESS FOR TREATMENT OF MINE CONTACT WATER

#8
20250136482
2025-05-01

Process and System for Treatment of Water Containing Dissolved Metals

#9
20250051194
2025-02-13

Nickel-Iron-Based Alloys for Electrochemical Reduction of Selenium Oxyanions

#10
20250011207
2025-01-09

Methods of treating water

#11
20240409445
2024-12-12

METHODS OF TREATING WATER TO REMOVE CONTAMINANTS AND WATER TREATMENT PLANTS FOR THE PRACTICE THEREOF

#12
20240368008
2024-11-07

ENHANCED INORGANIC COAGULANTS FOR WASTEWATER TREATMENT

#13
20240343625
2024-10-17

Process for Removing Selenium from Wastewater Using Biological Reduction and Surface Complexation

#14
20240286937
2024-08-29

HEAVY METAL TREATMENT AGENT, AND METHOD FOR TREATING INCINERATED ASH AND WASTEWATER USING SAME

#15
20240228305
2024-07-11

Production of Silicate Solutions and their Use in Mold and Mildew Remediation

#16
20240199455
2024-06-20

REMOVAL OF TOXIC OXYANIONS BY CO-CRYSTALLIZATION WITH SULFATE

#17
20240132389
2024-04-25

Treatment of saline water for agricultural and potable use

#18
20240101456
2024-03-28

SYSTEMS AND METHODS FOR BIOLOGICAL TRANSFORMATION, CONCENTRATION, AND RECOVERY OF SELENIUM FROM WASTEWATER

#19
20230302430
2023-09-28

SELENIOUS ACID ADSORBENT

#20
20230271853
2023-08-31

Metal-Organic Frameworks for the Removal of Multiple Liquid Phase Compounds and Methods for Using and Making Same

#21
20220387966
2022-12-08

Removing contaminants from water with adsorbents

#22
20220281762
2022-09-08

Rapid reduction of aqueous selenate with chromous ions

#23
20220267175
2022-08-25

Process for reducing selenium from ion-exchange brine

#24
20220234920
2022-07-28

METHOD OF REMOVING CONTAMINATE IN WASTEWATER

#25
20220204376
2022-06-30

WASTEWATER TREATMENT METHOD AND WASTEWATER TREATMENT SYSTEM

#26
20220204369
2022-06-30

METHODS OF TREATING WATER TO REMOVE SELENIUM OR MERCURY

#27
20220169541
2022-06-02

Ferro-cavitation processes for target metal separation

#28
20220144674
2022-05-12

Methods for treating selenocyanate in wastewater

#29
20220098060
2022-03-31

Metal-organic frameworks for the removal of multiple liquid phase compounds and methods for using and making same

#30
20220064028
2022-03-03

DIRECT ELECTROCHEMICAL REDUCTION METHOD FOR REMOVING SELENIUM FROM WASTEWATER

#31
20220055933
2022-02-24

METHODS AND COMPOSITIONS FOR TREATING INDUSTRIAL WASTEWATER

#32
20210346863
2021-11-11

Adsorbents, systems and methods for the removal of heavy metals from contaminated water

#33
20210238067
2021-08-05

Methods for removing anions from water

#34
20210230027
2021-07-29

Methods of treating water to remove contaminants and water treatment plants for the practice thereof

#35
20210221716
2021-07-22

Rapid reduction of aqueous selenate with chromous ions

#36
20210087079
2021-03-25

Ferro-cavitation processes for target metal separation

#37
20210053845
2021-02-25

Removal of selenium from water with kaolinite

#38
20210016246
2021-01-21

Multi-functionalized basic immobilized amine sorbents for removal of metal contaminants from wastewater

#39
20210009442
2021-01-14

Filter for water purifier and water purifier including the same

#40
20200398252
2020-12-24

Multifunctional porous materials for water purification and remediation

#41
20200385299
2020-12-10

Treatment of saline water for agricultural and potable use

#42
20200361792
2020-11-19

Apparatus to remove harmful chemical species from industrial wastewater using iron-based products

#43
20200354237
2020-11-12

Water purification compositions and the method of producing the same

#44
20200339457
2020-10-29

Moving bed biofilm reactor system for selenium removal from water and wastewater

#45
20200299156
2020-09-24

Systems and methods of reducing selenium contamination in waste water

#46
20200156968
2020-05-21

Enhanced inorganic coagulants for wastewater treatment

#47
20200140289
2020-05-07

Methods and uses of encapsulated exudates and dried biomass for binding metal

#48
20200109068
2020-04-09

Metal-organic frameworks for the removal of multiple liquid phase compounds and methods for using and making same

#49
20200087179
2020-03-19

Removal of selenocyanate from refinery sour water stripper wastewater

#50
20200071219
2020-03-05

Control of aqueous arsenic, selenium, mercury or other metals from flue gas

#51
20200039844
2020-02-06

Process, device and system for treatment of water

#52
20200010343
2020-01-09

Mixed aluminum (III) and iron (II) salt solution for enhancing the hybrid zero-valent iron media system reactivity for treating metal-contaminated wastewater

#53
20200002193
2020-01-02

Water purification compositions and the method of producing the same

#54
20190389742
2019-12-26

Anion removal from waste water

#55
20190359501
2019-11-28

Process for preparation of granular material

#56
20190352203
2019-11-21

Selenium removal using aluminum salt at conditioning and reaction stages to activate zero-valent iron (ZVI) in pironox process

#57
20190270657
2019-09-05

Method for reducing selenium and heavy metals in industrial wastewaters

#58
20190263697
2019-08-29

Treatment of saline water for agricultural and potable use and for generation of disinfectant solution

#59
20190194040
2019-06-27

Reactors and methods for producing and recovering extracellular metal or metalloid nanoparticles

#60
20190193088
2019-06-27

LIQUID PURIFICATION USING MAGNETIC NANOPARTICLES

#61
20190177196
2019-06-13

Process for treatment of mine impacted water

#62
20190152823
2019-05-23

Treatment of thick fine tailings including chemical immobilization, polymer flocculation and dewatering

#63
20190144318
2019-05-16

Process for selenium removal with biological, chemical and membrane treatment

#64
20190135672
2019-05-09

Concentration of wastewater to reduce flow rate, cost, and footprint of treatment system

#65
20190092667
2019-03-28

Method and apparatus for selenium removal from high TDS wastewater

#66
20190092649
2019-03-28

Wastewater treatment systems and methods

#67
20190084845
2019-03-21

Method and process arrangement of removing cations from water

#68
20190071339
2019-03-07

Apparatus and methods for treating wastewater

#69
20190071337
2019-03-07

BIOCONVERSION PROCESSES AND APPARATUS

#70
20190055140
2019-02-21

Compositions and methods for selenium removal

#71
20190023585
2019-01-24

Method and apparatus for the recovery and deep treatment of polluted acid

#72
20190002318
2019-01-03

Process and apparatus for dosing nutrients to a bioreactor

#73
20180319674
2018-11-08

REMOVAL OF SELENOCYANATE FROM INDUSTRIAL WATER SYSTEMS WITH SULFIDED METAL ADSORBENTS

#74
20180305230
2018-10-25

Methods for treating selenocyanate in wastewater

#75
20180305229
2018-10-25

Method for removal of recalcitrant selenium species from wastewater

#76
20180273410
2018-09-27

SYSTEM AND METHOD FOR WATER TREATMENT

#77
20180222782
2018-08-09

ANAEROBIC SUSPENDED GROWTH TREATMENT OF CONTAMINATED WATER

#78
20180186661
2018-07-05

Proppants for removal of contaminants from fluid streams and methods of using same

#79
20180134581
2018-05-17

Metal-organic frameworks for adsorption of liquid phase compounds

#80
20180117531
2018-05-03

Submerged membrane filtration system using reciprocating membrane

#81
20180111855
2018-04-26

Activated hybrid zero-valent iron treatment system and methods for generation and use thereof

#82
20180086650
2018-03-29

Modification of iron-based media for water treatment

#83
20180072594
2018-03-15

Device for electrocoagulation and process

#84
20180065873
2018-03-08

PROCESSES FOR TREATING SELENATE IN WATER

#85
20180057383
2018-03-01

Novel Radioresistant Alga of the Genus Coccomyxa

#86
20180057371
2018-03-01

Detection and removal of selenate from aqueous solution

#87
20180057370
2018-03-01

High-performance anion exchange membranes and methods of making same

#88
20180056268
2018-03-01

Hollow iron-manganese composite material prepared by etching template process and application thereof

#89
20170355619
2017-12-14

Anion removal from waste water

#90
20170349462
2017-12-07

Process for removal of selenium from water by dithionite ions

#91
20170341963
2017-11-30

Methods and systems for remediation of heavy metals in combustion waste

#92
20170341960
2017-11-30

REMOVAL OF SELENIUM FROM COAL MINE WASTEWATER

#93
20170341959
2017-11-30

WATER TREATMENT USING A CRYPTOCRYSTALLINE MAGNESITE - BENTONITE CLAY COMPOSITE

#94
20170334746
2017-11-23

Preferential removal of hexavalent chromium from contaminated water

#95
20170313608
2017-11-02

Fail Safe Flushing BioReactor for Selenium Water Treatment

#96
20170233274
2017-08-17

CONTAMINANT REMOVAL FROM WASTE WATER

#97
20170233272
2017-08-17

Method and apparatus for selenium removal from high TDS wastewater

#98
20170210647
2017-07-27

PROCESS FOR REDUCING SELENIUM FROM AN ION-EXCHANGE OR ADSORPTION MEDIA BRINE

#99
20170210639
2017-07-27

Water purification

#100
20170158535
2017-06-08

PROCESS FOR RECOVERING ELEMENTAL SELENIUM FROM WASTEWATER

#101
20170157592
2017-06-08

Particulate sorption medium prepared from partially decomposed organic matter

#102
20170129792
2017-05-11

Selenium removal using aluminum salt at conditioning and reaction stages to activate zero-valent iron (ZVI) in pironox process

#103
20170081227
2017-03-23

Concentrating of wastewater to reduce flow rate, cost, and footprint of treatment system

#104
20170057853
2017-03-02

Submerged membrane filtration system using reciprocating membrane

#105
20170036933
2017-02-09

REMOVAL OF SELENOCYANATE FROM REFINERY SOUR WATER STRIPPER WASTEWATER

#106
20160318775
2016-11-03

Process, device and system for treatment of water

#107
20160318773
2016-11-03

Metal-organic frameworks for adsorption of liquid phase compounds

#108
20160311711
2016-10-27

Methods and systems for selenocyanate removal from contaminated aqueous media

#109
20160311710
2016-10-27

PROCESSES FOR TREATMENT OF METAL-CONTAINING FLUIDS, RELATED APPARATUS, AND RELATED COMPOSITIONS

#110
20160304366
2016-10-20

METHODS FOR REMOVING CONTAMINANTS FROM AQUEOUS SYSTEMS

#111
20160297698
2016-10-13

Partial bed backwashing for packed bed reactor

#112
20160289092
2016-10-06

Removal of dissolved selenium from aqueous solutions

#113
20160264440
2016-09-15

Dual media system for treating wastewater containing selenium

#114
20160264439
2016-09-15

Multi-step system for treating selenium-containing wastewater

#115
20160264438
2016-09-15

Hybrid reactor and process for removing selenium

#116
20160264437
2016-09-15

Backwash method for biological reactors

#117
20160251241
2016-09-01

Wastewater treatment method and wastewater treatment apparatus

#118
20160244342
2016-08-25

Iron-functionalized alginate for phosphate and other contaminant removal and recovery from aqueous solutions

#119
20160176742
2016-06-23

Natural Effluent Remediation System

#120
20160159674
2016-06-09

Methods and systems for reducing biofouling of microfiltration membranes

#121
20160159669
2016-06-09

REMOVAL OF METALS FROM WASTEWATER

#122
20160115053
2016-04-28

Method for removing selenium and apparatus for removing selenium

#123
20160068419
2016-03-10

Anoxic membrane filtration system

#124
20160068414
2016-03-10

Addition of aluminum reagents to oxoanion-containing water streams

#125
20160052808
2016-02-25

Zero valent iron systems and methods for treatment of contaminated wastewater

#126
20160052800
2016-02-25

Filter material having a function of adsorbing and fixing arsenic and heavy metals

#127
20160023921
2016-01-28

Method for making activated carbon-supported transition metal-based nanoparticles

#128
20160016818
2016-01-21

Selenium and other contaminants removal process

#129
20150353393
2015-12-10

Electrobiochemical reactor and related method to enhance microbial/enzyme function in transforming or removing contaminants from a liquid

#130
20150232350
2015-08-20

Proppants for removal of contaminants from fluid streams and methods of using same

#131
20150218015
2015-08-06

Polymer beads incorporating solid particulate material

#132
20150203377
2015-07-23

System for removing minerals from a brine using electrodialysis

#133
20150191374
2015-07-09

REMOVAL OF TARGETED CONSTITUENTS THROUGH THE USE OF REDUCTANTS/OXIDANTS COUPLED TO A MAGNETIC SEPARATOR

#134
20150158749
2015-06-11

Selective extraction of anions from solution

#135
20150151985
2015-06-04

Electrochemical reactor system for treatment of water

#136
20150136703
2015-05-21

TITANIUM-IMPREGNATED CARBON NANOTUBES FOR SELENIUM REMOVAL

#137
20150122736
2015-05-07

Removal of selenium from coal mining runoff water

#138
20150083662
2015-03-26

Anaerobic suspended growth treatment of contaminated water

#139
20140367335
2014-12-18

Method for removing mercury and selenium from sulfate-containing waste water

#140
20140302578
2014-10-09

Method for recovering selenium

#141
20140260468
2014-09-18

Iron-functionalized alginate for phosphate and other contaminant removal and recovery from aqueous solutions

#142
20140248206
2014-09-04

COrecovery system and COrecovery method

#143
20140124447
2014-05-08

Formulations and methods for removing heavy metals from waste solutions containing chelating agents

#144
20140083934
2014-03-27

Biological two-stage contaminated water treatment system

#145
20140073775
2014-03-13

Cellulose phosphate powder product and process for manufacture thereof, and application to removal of contaminants from aqueous solutions

#146
20140045248
2014-02-13

System for removing selenium from a feed stream

#147
20140042065
2014-02-13

Treatment stages for selenium removal

#148
20130334134
2013-12-19

Integrated selenium removal system for waste water

#149
20130270189
2013-10-17

Treatment of contaminated impound water

#150
20130233802
2013-09-12

Renewable resource-based metal oxide-containing materials and applications of the same

#151
20130131253
2013-05-23

Metal scavenging polymers and uses thereof

#152
20130071311
2013-03-21

Air pollution control system and air pollution control method

#153
20130004373
2013-01-03

SYSTEM FOR TREATING SELENIUM-CONTAINING LIQUID, WET FLUE GAS DESULFURIZATION DEVICE, AND METHOD FOR TREATING SELENIUM-CONTAINING LIQUID

#154
20120322696
2012-12-20

Proppants for removal of contaminants from fluid streams and methods of using same

#155
20120305489
2012-12-06

Method and apparatus for treating selenium-containing water

#156
20120285893
2012-11-15

Methods for removing contaminants from aqueous systems

#157
20120273431
2012-11-01

ZERO VALENT IRON/IRON OXIDE MINERAL/FERROUS IRON COMPOSITE FOR TREATMENT OF A CONTAMINATE FLUID

#158
20120267315
2012-10-25

TREATMENT OF WASTEWATER

#159
20120241381
2012-09-27

Method and apparatus for removal of selenium from water

#160
20120241376
2012-09-27

METHOD OF SELENIUM REMOVAL FROM AN AQUEOUS SOURCE

#161
20120240761
2012-09-27

Air pollution control system and air pollution control method, spray drying device of dewatering filtration fluid from desulfurization discharged water, and method thereof

#162
20120152761
2012-06-21

SELENIUM SEPARATION AND RECOVERY FROM BIOREACTOR SLUDGE

#163
20120145640
2012-06-14

METHOD AND COMPOSITION TO REDUCE THE AMOUNTS OF HEAVY METAL IN AQUEOUS SOLUTION

#164
20120145639
2012-06-14

Contaminant separating method using a modified palygorskite clay sorbent

#165
20120121821
2012-05-17

Renewable resource-based metal-containing materials and applications of the same

#166
20120080374
2012-04-05

OZONE AND ANAEROBIC BIOLOGICAL PRETREATMENT FOR A DESALINATION PROCESS

#167
20120061324
2012-03-15

ELEMENT REMOVAL PROCESS AND APPARATUS

#168
20120024798
2012-02-02

Selenium Removal Using Chemical Oxidation and Biological Reduction

#169
20110309023
2011-12-22

ELEMENT REMOVAL PROCESS AND APPARATUS

#170
20110303605
2011-12-15

Electrobiochemical Reactor

#171
20110290733
2011-12-01

METHOD AND APPARATUS FOR REMOVING SELENIUM FROM WATER

#172
20110290666
2011-12-01

METHOD AND APPARATUS FOR REMOVING SELENIUM FROM WATER

#173
20110268637
2011-11-03

Air pollution control system and air pollution control method

#174
20110266215
2011-11-03

Advanced biologic water treatment using algae

#175
20110204000
2011-08-25

METHOD FOR REMOVING SELENIUM FROM WATER

#176
20110203993
2011-08-25

Treatment stages for selenium removal

#177
20110186489
2011-08-04

Gasification grey water treatment systems

#178
20110180479
2011-07-28

ZERO LIQUID DISCHARGE WATER TREATMENT SYSTEM AND METHOD

#179
20110174743
2011-07-21

HYBRID COMPOSITES FOR CONTAMINATED FLUID TREATMENT

#180
20110168638
2011-07-14

Methods of using adsorption media for separating or removing constituents

#181
20110114563
2011-05-19

ELEMENT REMOVAL PROCESS AND APPARATUS

#182
20110056887
2011-03-10

REMOVAL OF OXO ANIONS FROM WATER

#183
20110006001
2011-01-13

Method and system for surface water treatment

#184
20100307980
2010-12-09

Methods of removing a constituent from a feed stream using adsorption media

#185
20100307978
2010-12-09

Method for contaminant removal from aqueous solution

#186
20100300977
2010-12-02

OPERATIONS OF SELENIUM REMOVAL SORBENT BEDS

#187
20100300963
2010-12-02

Apparatus and method for treating FGD blowdown or similar liquids

#188
20100230350
2010-09-16

Method and apparatus for treating selenium-containing wastewater

#189
20100213104
2010-08-26

Selenium removal process

#190
20100147769
2010-06-17

ELEMENT REMOVAL PROCESS AND APPARATUS

#191
20100140179
2010-06-10

POROUS IRON OXIDE AND METHOD FOR PRODUCING THE SAME AND METHOD FOR TREATING SOLUTIONS

#192
20090298165
2009-12-03

Process for removing selenium from air or water

#193
20090242489
2009-10-01

Element removal apparatus

#194
20090242483
2009-10-01

Element removal process

#195
20080257820
2008-10-23

Apparatus and method for treating FGD blowdown or similar liquids

#196
20070114174
2007-05-24

Apparatus and method for treating FGD blowdown or similar liquids

#197
20060041116
2006-02-23

Dual-functional ion exchange resins from agricultural by-products

#198
20050288181
2005-12-29

High capacity adsorption media and method of producing

#199
20050109700
2005-05-26

pH adjuster-based system for treating liquids

#200
20050051492
2005-03-10

High capacity adsorption media and method of producing

#201
16904202
2021-11-30

Algal harvesting and water filtration

#202
15398455
2018-08-28

Removal of contaminants from water

#203
15210754
2018-01-30

Removal of contaminants from water