ClassID:

86274

C02F1/5209 - CPC Classification

Classification description:

Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities Regulation methods for flocculation or precipitation

Recent Application in this class:
#1
20260091997
2026-04-02

SYSTEMS AND METHODS FOR PURIFYING AQUEOUS FLUIDS

#2
20260084989
2026-03-26

WATER CLARIFICATION CHEMICAL CONTROL SYSTEM

#3
20260070500
2026-03-12

GREY WATER RECLAMATION

#4
20260049012
2026-02-19

AUTOMATED RAINFALL FLOCCULANT DISBURSEMENT STRUCTURE FOR SEDIMENT AND EROSION CONTROL

#5
20260049011
2026-02-19

COMPOSITIONS AND METHODS FOR CONTROLLING SLUDGE BED PROPERTIES AND IMPROVING LIME SOFTENING PROCESS EFFICIENCY

#6
20260022040
2026-01-22

Performance of Sulfated Coagulants by Photoactivation Prior to Dosing

#7
20250389568
2025-12-25

Streaming Current Monitor

#8
20250382208
2025-12-18

System and Method for Producing and Purifying Alkalinity for Addition to a Body of Water

#9
20250376391
2025-12-11

WASTEWATER TREATMENT SYSTEM AND WASTEWATER TREATMENT METHOD USING THEREOF

#10
20250361156
2025-11-27

METHODS AND SYSTEMS FOR REAL-TIME WATER QUALITY ASSESSMENT

#11
20250333337
2025-10-30

METAL CATION REMOVAL FROM LIQUID STREAMS USING CAPTURED CARBON DIOXIDE

#12
20250282646
2025-09-11

PORTABLE INSULATED WATER TREATMENT MODULES AND SYSTEMS FOR PURIFYING WATER

#13
20250276922
2025-09-04

CATIONIC COAGULANT AND FLOCCULANT COMPOSITIONS AND METHODS OF USE TO REMOVE ORGANICS/INORGANICS FROM PRODUCED WATER AT HIGH TEMPERATURE OPERATIONS

#14
20250223203
2025-07-10

INTELLIGENT DOSING CONTROL METHOD, DEVICE AND SYSTEM FOR SOFTENING AND REMOVING HARDNESS

#15
20250187229
2025-06-12

METHODS AND COMPOSITIONS FOR TREATMENT OF CONCRETE WASH WATER

#16
20250162909
2025-05-22

A METHOD AND APPARATUS FOR CONTROLLING A COAGULANT DOSAGE IN A WATER TREATMENT SYSTEM

#17
20250154032
2025-05-15

COAGULATION CONTROL METHOD AND SYSTEM

#18
20250091917
2025-03-20

METHOD FOR WATER PURIFICATION THROUGH FRESH GENERATION OF FLOCCULANT, AND APPARATUS APPLICABLE THERETO

#19
20250066221
2025-02-27

A Method of Monitoring Processes in an Urban Water Cycle

#20
20250059075
2025-02-20

A METHOD AND APPARATUS FOR MONITORING BIOSLUDGE QUALITY IN WASTEWATER TREATMENT

#21
20250051197
2025-02-13

WASTEWATER TREATMENT METHOD AND WASTEWATER TREATMENT SYSTEM

#22
20250042780
2025-02-06

NEURAL NETWORK-BASED OPTIMIZATION FOR COAGULANT DOSING IN DESALINATION PLANTS

#23
20250033998
2025-01-30

AQUATIC INSTALLATION PREDICTIVE MAINTENANCE SYSTEM AND METHOD

#24
20250019278
2025-01-16

Acid Rain Diffusion Based on Vulnerable Zone Classifications

#25
20240395234
2024-11-28

SYSTEMS AND METHODS FOR DEWATERING SLURRIES

#26
20240383790
2024-11-21

Method for Regulating the Addition of a Flocculant to a Sludge

#27
20240383777
2024-11-21

SORBENT-BASED SYSTEMS AND METHODS FOR REDUCING A CONCENTRATION OF A METAL FROM A FLUID

#28
20240368008
2024-11-07

ENHANCED INORGANIC COAGULANTS FOR WASTEWATER TREATMENT

#29
20240343611
2024-10-17

METHODS FOR DYNAMICALLY VARYING CHEMICAL ADDITIVE FLOWRATE TO TREAT WASTEWATER IN REAL TIME AND SYSTEMS FOR PERFORMING THE SAME

#30
20240327257
2024-10-03

Gated Electrodialysis with Zero Liquid Discharge

#31
20240262723
2024-08-08

Controlled Removal of Ions from Aqueous Fluid

#32
20240100737
2024-03-28

Methods and compositions for treatment of concrete wash water

#33
20240092668
2024-03-21

Method and system for controlling hydrophobic conditions and fouling in water intensive processes

#34
20240091668
2024-03-21

System and Method for Cleaning of a Forced-Circulation Evaporative Crystallizer

#35
20240067547
2024-02-29

Anoxic Bioreactor Treatment followed by pH Adjusted Peroxide/Iron Treatment for Enhanced, Efficient Selenium Removal in Wastewaters

#36
20240051859
2024-02-15

APPARATUS AND METHOD FOR TREATING WASTE WATER

#37
20230399241
2023-12-14

PROCESS FOR REMOVING CYANIDE FROM A CYANIDE-BEARING AQUEOUS FLUID

#38
20230331599
2023-10-19

METHOD OF SULFATE REMOVAL FROM SEAWATER USING HIGH SALINITY PRODUCED WATER

#39
20230331598
2023-10-19

REMOVAL OF SULFATE FROM SEAWATER

#40
20230331597
2023-10-19

METHOD OF ADMINISTERING COAGULANT

#41
20230295022
2023-09-21

SAMPLING DEVICE FOR COAGULATION TREATMENT DEVICE, COAGULATION TREATMENT DEVICE, AND WATER TREATMENT METHOD

#42
20230234870
2023-07-27

System and method for treating reverse-osmosis concentrated water with high temporary hardness

#43
20230227342
2023-07-20

WATER TREATMENT METHOD AND WATER TREATMENT APPARATUS

#44
20230212033
2023-07-06

APPARATUS AND METHOD FOR CONTROLLING CHEMICAL DOSING OPTIMIZATION FOR WATER TREATMENT PLANT

#45
20230212032
2023-07-06

APPARATUS AND METHOD FOR CONTROLLING OUTPUT FOR CHEMICAL DOSING OPTIMIZATION FOR WATER TREATMENT PLANT

#46
20230192517
2023-06-22

A CONTROL SYSTEM OF A WASTEWATER TREATMENT PLANT

#47
20230192509
2023-06-22

System and process for separating sand and gravel in sediments of sewage pipe network and recycling organic matters

#48
20230166991
2023-06-01

Methods and systems for streaming current analyzer calibration and reporting

#49
20230106343
2023-04-06

WATER TREATMENT SYSTEM, CONTROL DEVICE, WATER TREATMENT METHOD, AND PROGRAM

#50
20230048214
2023-02-16

Automated methods and systems for optimized zeta potential chemical dosing in water treatment systems

#51
20230038572
2023-02-09

SYSTEM FOR PRODUCING MAGNESIUM HYDROXIDE

#52
20220356087
2022-11-10

WASTEWATER TREATMENT SYSTEM

#53
20220298034
2022-09-22

Automated methods and systems for optimized zeta potential chemical dosing in water treatment systems

#54
20220227652
2022-07-21

Phosphorous extraction and recovery system

#55
20220212963
2022-07-07

Dosing control method and system for micro-flocculation in ultrafiltration

#56
20220135455
2022-05-05

Removing heavy metals in a ballasted process

#57
20220135452
2022-05-05

METHOD OF MONITORING AND OPTIONALLY CONTROLLING REMOVAL OF MICROPLASTICS FROM MICROPLASTIC CONTAINING WATERS

#58
20220135451
2022-05-05

Method of evaluating and optionally selecting a suitable chemistry for removal of microplastics in a liquid matrix

#59
20220135450
2022-05-05

ACHIEVING WATER RELEASE ZONE FOR DEWATERING THICK FINE TAILINGS BASED ON SHEARING PARAMETER SUCH AS CAMP NUMBER

#60
20220119293
2022-04-21

METHOD OF CONTROLLING SCALE IN AQUEOUS SYSTEMS

#61
20220106209
2022-04-07

Solid precipitation apparatus and solid precipitation process

#62
20220081337
2022-03-17

Mobile water filtration system for on-site decoking operations

#63
20220073386
2022-03-10

Mineral recovery control

#64
20220055926
2022-02-24

METHOD FOR THE PRECIPITATION OF ARSENIC AND HEAVY METALS FROM ACIDIC PROCESS WATER

#65
20220024788
2022-01-27

Fluorescent water treatment compounds and method of use

#66
20220009807
2022-01-13

MEASURING AND CONTROLLING ORGANIC MATTER IN WASTE WATER STREAM

#67
20210403343
2021-12-30

RECYCLING AUTOMOTIVE PHOSPHATE RINSE WATER STREAM

#68
20210355003
2021-11-18

Server of monitoring water purification apparatus according to voice command and water purification apparatus

#69
20210340036
2021-11-04

Controlled removal of ions from aqueous fluid

#70
20210269331
2021-09-02

Systems and methods for dewatering slurries

#71
20210208067
2021-07-08

Suspended solids measurement of wastewater

#72
20210206679
2021-07-08

APPARATUS AND METHOD FOR TREATING FLUORINE-CONTAINING WASTEWATER

#73
20210163307
2021-06-03

Method for treating an industrial effluent charged with aluminium using CO

#74
20210155510
2021-05-27

Method for determining a dose of coagulant for treating raw water

#75
20210053082
2021-02-25

CHEMICAL APPLICATOR

#76
20210009448
2021-01-14

TREATMENT SYSTEM AND METHOD FOR RURAL BLACK AND ODOROUS WATER AND MANURE

#77
20200407250
2020-12-31

Method of optimizing the chemical precipitation process in water treatment plants and waste water treatment plants

#78
20200339449
2020-10-29

TEST APPARATUS FOR A WASTE WATER TREATMENT SYSTEM

#79
20200300755
2020-09-24

MEASUREMENT OF TREATMENT AGENT IN A PROCESS STREAM USING ULTRAVIOLET-VISIBLE (UV-VIS) SPECTROSCOPY, AND RELATED SYSTEMS AND PROCESSES

#80
20200299156
2020-09-24

Systems and methods of reducing selenium contamination in waste water

#81
20200290903
2020-09-17

Auto jartest analyzer

#82
20200262726
2020-08-20

Treatment of wastewater

#83
20200223719
2020-07-16

Method and system for optimization of coagulation and/or flocculation in a water treatment process

#84
20200208331
2020-07-02

Washing machine comprising a water purification system

#85
20200156968
2020-05-21

Enhanced inorganic coagulants for wastewater treatment

#86
20200155972
2020-05-21

WATER TREATMENT PLANT AND CORRESPONDING METHOD

#87
20200131060
2020-04-30

Media filter having nonpowered mixing and coagulation basin, and seawater desalination plant and dissolved air floatation apparatus using same

#88
20200131059
2020-04-30

Water treatment plant having integrated ballasted flocculation and decantation, and a corresponding method

#89
20200123030
2020-04-23

Achieving water release zone for dewatering thick fine tailings based on shearing parameter such as camp number

#90
20200079661
2020-03-12

System, apparatus, and method for treating wastewater in real time

#91
20200048126
2020-02-13

Method and system for controlling hydrophobic conditions and fouling in water intensive processes

#92
20200048117
2020-02-13

Method for removing hexavalent chromium from water bodies by sodium oxalate-modified zero-valent iron

#93
20200010342
2020-01-09

Method and system for phosphate recovery from a stream

#94
20190389750
2019-12-26

ON-LINE AND CONTINUOUS MEASUREMENT OF ORGANIC CARBON IN PETROLEUM REFINERY DESALTER BRINE WATER TO MONITOR, CONTROL AND OPTIMIZE THE DESALTER PROCESS UNIT

#95
20190382292
2019-12-19

Controlled removal of ions from aqueous fluid

#96
20190330088
2019-10-31

Systems and methods for dosing slurries to remove suspended solids

#97
20190315634
2019-10-17

WATER RECLAIM METHOD AND SYSTEM

#98
20190276342
2019-09-12

Treatment method and treatment apparatus for waste water containing sulfuric acid, fluorine and heavy metal ions

#99
20190270655
2019-09-05

Methods for optimizing water treatment coagulant dosing

#100
20190248677
2019-08-15

AUTOMATED CHEMICAL FEED TO WASTEWATER BASED ON MEASUREMENTS OF ORGANICS

#101
20190227578
2019-07-25

Image processing for improving coagulation and flocculation

#102
20190194048
2019-06-27

Removing heavy metals in a ballasted process

#103
20190168416
2019-06-06

Methods and compositions for treatment of concrete wash water

#104
20190127245
2019-05-02

Method and apparatus for treating polluted and malodorous river

#105
20190033222
2019-01-31

Method of determining residual flocculant in effluent of an industrial clarification process

#106
20190023598
2019-01-24

Dewatering systems and methods

#107
20190023586
2019-01-24

Recycling automotive phosphate rinse water stream

#108
20190002304
2019-01-03

Method and an apparatus for monitoring and controlling deposit formation

#109
20180362375
2018-12-20

Implementation method for eliminating harmful algal blooms through optimized utilization of modified clays

#110
20180297880
2018-10-18

Liquid treatment station indluding plural mobile units and methods for operation theror

#111
20180223468
2018-08-09

CONTROL METHOD OF WASHING MACHINE WITH WASHING WATER RECYCLING FUNCTION AND WASHING MACHINE

#112
20180208489
2018-07-26

Method for detecting and controlling the amount of cationic species in a water stream

#113
20180202092
2018-07-19

FLOCCULATION WASHING MACHINE AND CONTROL METHOD THEREOF

#114
20180200648
2018-07-19

Pilot filter for a water treatment system

#115
20180194656
2018-07-12

Water softening treatment using in-situ ballasted flocculation system

#116
20180171529
2018-06-21

CONTROL METHOD OF FLOCCULATION WASHING MACHINE, AND WASHING MACHINE

#117
20180117551
2018-05-03

Method for controlling rapid stirrer, and rapid stirrer

#118
20180073969
2018-03-15

Apparatus and method for determining chemical input

#119
20180037471
2018-02-08

WASTEWATER TREATMENT SYSTEM

#120
20170355628
2017-12-14

Fluorescent water treatment compounds and method of use

#121
20170349460
2017-12-07

MEASUREMENT AND TREATMENT OF FLUID STREAMS

#122
20170341958
2017-11-30

Real-time dewatering optimization

#123
20170341953
2017-11-30

WASTEWATER TREATMENT SYSTEM

#124
20170297930
2017-10-19

METHOD FOR TREATING WASTEWATER

#125
20170297929
2017-10-19

Water treatment system and method

#126
20170291834
2017-10-12

Automated dosing system and method with light profiling for wastewater filtration system

#127
20170291816
2017-10-12

Apparatus for the extraction of phosphorus from wastewater

#128
20170267556
2017-09-21

MANAGING NATURALLY OCCURRING RADIOACTIVE MATERIAL IN WASTEWATER

#129
20170267555
2017-09-21

Scrubber wastewater treatment method and scrubber wastewater treatment device

#130
20170253514
2017-09-07

SYSTEM AND METHOD FOR TREATING OIL / GAS PRODUCTION PROCESS WATERS

#131
20170240448
2017-08-24

INTEGRATED SYSTEM FOR CHEMICAL REACTION, SEDIMENTATION AND OXIDATION IN WATER TREATMENT PROCESSES

#132
20170209834
2017-07-27

Self-adaptive control and optimization of membrane filtration

#133
20170190601
2017-07-06

OXIDATION AND COLLOIDAL DESTABILIZATION WASTE WATER TREATMENT

#134
20170152153
2017-06-01

Image processing for improving coagulation and flocculation

#135
20170144905
2017-05-25

Removal of Heavy Metals from Water Contaminated with Heavy Metals by Precipitation of Calcium Carbonate

#136
20170144904
2017-05-25

METHOD FOR CONTROLLING WATER CIRCULATION AND PROCESSING IN WASHING MACHINE AND WASHING MACHINE

#137
20170044034
2017-02-16

Method and device for dewatering sludge on a screen

#138
20160362316
2016-12-15

ADAPTIVE IN-LINE MIXING FOR FLUID FINE TAILINGS FLOCCULATION

#139
20160355420
2016-12-08

MONITORING CONTROL DEVICE, WATER TREATMENT SYSTEM INCLUDING THE SAME, AND WATER TREATMENT METHOD

#140
20160326030
2016-11-10

Water treatment system

#141
20160326029
2016-11-10

Media filter having nonpowered mixing and coagulation basin, and seawater desalination plant and dissolved air floatation apparatus using same

#142
20160326016
2016-11-10

Multibubble injection type dissolved air flotation water treatment apparatus

#143
20160305890
2016-10-20

Optical determination of anionic charge in a process stream

#144
20160297697
2016-10-13

Systems and methods of reducing a bacteria population in high hydrogen sulfide water

#145
20160223452
2016-08-04

Monitoring apparatus and system

#146
20160185627
2016-06-30

System and method for treating contaminated wastewater

#147
20160068414
2016-03-10

Addition of aluminum reagents to oxoanion-containing water streams

#148
20150299005
2015-10-22

Achieving water release zone for dewatering thick fine tailings based on shearing parameter such as camp number

#149
20150290608
2015-10-15

Techniques for agglomerating mature fine tailing by injecting a polymer in a process flow

#150
20150259230
2015-09-17

SYSTEM AND METHOD FOR CHEMICAL DOSAGE OPTIMIZATION IN WATER TREATMENT AND SYSTEM AND METHOD FOR WATER TREATMENT

#151
20150253236
2015-09-10

SYSTEM AND METHOD FOR DETECTION AND SYSTEM AND METHOD FOR WATER TREATMENT

#152
20150218020
2015-08-06

Method for treating fracture water for removal of contaminants at a wellhead

#153
20150144571
2015-05-28

Dispersion and conditioning techniques for thick fine tailings dewatering operations

#154
20150076075
2015-03-19

Coagulation/flocculation apparatus for the treatment of a hydraulic flow, and implementation process

#155
20150068981
2015-03-12

Measurement of treatment agent in a process stream using ultraviolet-visible (UV-vis) spectroscopy, and related systems and processes

#156
20150060367
2015-03-05

COAGULATION PROCESSING METHOD, COAGULATION PROCESSING UNIT, AND WATER PROCESSING APPARATUS

#157
20150041406
2015-02-12

Method of tracing chemical quantities using encapsulated fluorescent dyes

#158
20150021272
2015-01-22

Apparatus for purifying wastewater and method thereof

#159
20150013235
2015-01-15

Method for separating polishing material and regenerated polishing material

#160
20140319073
2014-10-30

Fluid filtration system

#161
20140319072
2014-10-30

Fluid filtration system

#162
20140277746
2014-09-18

Chemical injection control method and chemical injection controller

#163
20140263079
2014-09-18

Wastewater treatment system and method

#164
20140209523
2014-07-31

Water treatment process and plant using ballasted flocculation and settling

#165
20140158635
2014-06-12

System and method for hydrate-based desalination

#166
20140147923
2014-05-29

Methods and devices for testing water

#167
20140131259
2014-05-15

System and methods of determining liquid phase turbidity of multiphase wastewater

#168
20140048491
2014-02-20

Fluid filtration system

#169
20140021132
2014-01-23

Water treatment apparatus with circulating flow path and water treatment method using the same

#170
20130335731
2013-12-19

System and method for analyzing water samples in a water processing facility

#171
20130327717
2013-12-12

Fluid clarifier and method for clarifying a fluid

#172
20130240450
2013-09-19

Method for treating highly concentrated resin-desorption liquid generated from wastewater deep purification

#173
20130233804
2013-09-12

APPLICATION OF FLUORESCENT DYES TO TRACE AND QUANTIFY CHEMICAL DOSAGE IN INDUSTRIAL WASTEWATER

#174
20130220922
2013-08-29

Method and system for monitoring properties of an aqueous stream

#175
20130213895
2013-08-22

Wastewater treatment system

#176
20130153510
2013-06-20

METHOD AND SYSTEM FOR TREATING AQUEOUS STREAMS

#177
20130043194
2013-02-21

Tagged polymers, water treatment compositions, and methods of their use in aqueous systems

#178
20130043165
2013-02-21

Process for dying oil sand mature fine tailings

#179
20130037463
2013-02-14

WASTEWATER TREATMENT SYSTEM

#180
20130019780
2013-01-24

Geopolymer additives and methods of use for treatment of fluid fine tailings

#181
20130015141
2013-01-17

NOVEL INJECTION FLOCCULATION AND COMPRESSION DEWATERING UNIT FOR SOLIDS CONTROL AND MANAGEMENT OF DRILLING FLUIDS AND METHODS RELATING THERETO

#182
20130015132
2013-01-17

Water purification apparatus and method for using pressure filter and pore control fiber filter

#183
20120298570
2012-11-29

FILTRATION APPARATUS AND WATER TREATMENT APPARATUS

#184
20120267289
2012-10-25

Reactor for Versatile Effluent Treatment System

#185
20120211426
2012-08-23

METHOD AND SYSTEM FOR TREATING A CONTAMINATED FLUID

#186
20120043264
2012-02-23

Flocculation-magnetic separation system

#187
20120037568
2012-02-16

Controlled method of minimizing radioactive sludge generation in post stimulation flowback and/or produced water treatment from a saltwater, oil and/or gas well

#188
20120006101
2012-01-12

Method for determining the optimal treatment dosage for metals removal

#189
20120000859
2012-01-05

Wastewater treatment system

#190
20110290737
2011-12-01

Self contained dissolved air flotation system

#191
20110272346
2011-11-10

Quick static decanter for prethickening water treatment sludge, and plant including such a decanter

#192
20110266227
2011-11-03

Apparatus for determining coagulant amount

#193
20110259195
2011-10-27

River water utilizing flue gas desulfurization system and humic substance removing method

#194
20110203977
2011-08-25

FILTRATION APPARATUS AND WATER TREATMENT APPARATUS

#195
20110155255
2011-06-30

Method for monitoring and controlling a process for treatment of a treatable fluid

#196
20110094963
2011-04-28

MEMBRANE SEPARATION METHOD AND MEMBRANE SEPARATION DEVICE

#197
20110006014
2011-01-13

System and Method For Process and Waste Water Filtration

#198
20110000849
2011-01-06

Water purification apparatus and method for using pressure filter and pore control fiber filter

#199
20100326912
2010-12-30

PROCESS FOR PRODUCING RECLAIMED WATER

#200
20100314302
2010-12-16

Self contained dissolved air flotation system

#201
20100224569
2010-09-09

Wastewater treatment system

#202
20100096335
2010-04-22

Water treatment process and plant using ballasted flocculation and settling

#203
20100044286
2010-02-25

Water-Purification Pretreatment System

#204
20100038321
2010-02-18

Grit chamber and a method for controlling the same

#205
20090255876
2009-10-15

Feedback control scheme for optimizing dewatering processes

#206
20090230033
2009-09-17

System for continuous optimization of wastewater treatment

#207
20080288111
2008-11-20

Method and apparatus for determination of coagulant injection rate in water treatment process

#208
20080099396
2008-05-01

Device and Method for Purifying Waste Water

#209
20080062417
2008-03-13

Compositions and methods for the detection of water treatment polymers

#210
20080047903
2008-02-28

CONTROL SYSTEM AND PROCESS FOR WASTEWATER TREATMENT

#211
20070175804
2007-08-02

Coagulation-sedimentation apparatus

#212
20070090060
2007-04-26

Polymer control system

#213
20070000840
2007-01-04

Self contained dissolved air flotation system

#214
20060160227
2006-07-20

Method of monitoring treating agent residuals and controlling treating agent dosage in water treatment processes

#215
20060160226
2006-07-20

Method of monitoring treating agent residuals in water treatment processes

#216
20060081544
2006-04-20

Sludge concentration system which have functions for automatically charging a coagulant and for automatically controlling the concentration of a sludge

#217
20050230318
2005-10-20

Method of clarifying industrial laundry wastewater using cationic dispersion polymers and anionic flocculent polymers

#218
20050211634
2005-09-29

CONTROL SYSTEM AND METHOD FOR WASTEWATER TREATMENT

#219
19231950
2026-02-17

Systems and methods for production of potable water by recycling processed wastewater streams

#220
18336975
2023-10-24

Vacuum-flocculation-solidification integrated apparatus for waste mud and using method thereof

#221
17580282
2022-06-28

Removal of ammoniacal nitrogen from landfill leachates

#222
17333375
2021-11-23

Mobile water filtration system

#223
14340862
2015-08-18

Treatment of potable water

#224
14196584
2017-02-28

Biological two-stage contaminated water treatment system and process

#225
14027328
2018-01-09

System and method for treating wastewater entering a septic tank