30039 ⎘
Types of filters having loose filtering material Sand or gravel filters
FILTRATION SYSTEM
#2PERMEABLE INFILTRATION FIELD FORMS AND METHODS OF USE
#3DEVICES AND METHODS FOR MOVING, REMOVING AND/OR INSTALLING ONE OR MORE COMPONENTS OF A TREATMENT UNIT
#4FILTRATION SYSTEM
#5FEEDBACK CONTROLLED GAS LIFT CONVEYANCE OF SLURRY
#6Water Holding System
#7MEDIA RETENTION PLATE FOR A BLOCK UNDERDRAIN SYSTEM
#8Hydraulic sludge recovery system
#9WATER FILTRATION APPARATUS AND PROCESS
#10PORTABLE MODULAR FILTER SYSTEM
#11DEVICE AND METHOD FOR HARMLESS TREATMENT AND REGENERATION OF WASTE LIQUID DISCHARGE DURING WATER GLASS MOLD SHELL HARDENED WITH AMMONIUM CHLORIDE SOLUTION
#12DEVICES AND METHODS FOR MOVING, REMOVING AND/OR INSTALLING ONE OR MORE COMPONENTS OF A TREATMENT UNIT
#13Media retention plate for a block underdrain system
#14Water Filtration System
#15System And Method For Wastewater Treatment Including Use of Microporous Media Beds
#16LAYERED MEDIA BACKWASH WITH INTERNAL DRAFT TUBE
#17LIQUID CONTAINMENT AND FILTRATION DEVICE
#18Fluid filtering apparatus and method
#19SYSTEMS AND METHODS FOR STORMWATER MANAGEMENT
#20Sand filter LED status light
#21METHOD AND SYSTEM FOR DETERMINING LIQUID LEVELS IN SAND FILTERS AND EFFECTIVE AIR SCOURING DURING BACKWASH
#22Apparatus and method to prevent downward flow of liquid during a gas only washing cycle
#23Water filtration and aeration unit
#24Automatic sand filter system controller
#25Multilayer Media Bed Filter with Improved Backwash
#26Nutrient Removal Filtration System and Method
#27Paper capillary lateral flow fluid filter for bacterial and nanometer sized particle contamination
#28Fluid filtering apparatus and method
#29Devices and methods for moving, removing and/or installing one or more components of a treatment unit
#30Portable modular filter system
#31Nutrient removal filtration system and method
#32Sand filter LED status light
#33APPARATUS AND METHOD FOR LIQUID REFLUX SUCTION-FILTER-PUMP
#34Devices and methods for moving, removing and/or installing one or more components of a treatment unit
#35METHOD AND APPARATUS FOR FILTRATION OF POLLUTED LIQUID
#36Animal waste filter
#37Integrated unit for intake and pretreatment with local backwashing
#38Photovoltaic evaporation and distillation system for the recycling of greywater to potable water
#39Mobile microalgae harvesting
#40TAIL WATER DECENTRALIZED TREATMENT AND DRAINAGE SYSTEM OF SEWAGE TREATMENT PLANT
#41Self-regenerating biofilter
#42Paving element having drainage channels and pavement system incorporating same
#43Portable apparatus and methods for analyzing injection fluids
#44Waste-movement system for aquarium
#45Multilayer Media Bed Filter with Improved Backwash
#46Infiltration intake system for revetment wall
#47Portable apparatus and methods for analyzing injection fluids
#48Aquarium system
#49FILTER MEDIUM, PROCESS FOR PRODUCING FILTER MEDIUM, FILTRATION DEVICE, METHOD FOR OPERATING FILTRATION DEVICE, AND FILTRATION SYSTEM
#50Fluid circulation monitoring system
#51Situ treatment system and method for dewatering and stabilization of waste material deposits in waste impoundments
#52FLUID FILTRATION AND DISTRIBUTION SYSTEM FOR PLANTING DEVICES
#53SELF-REGENERATING BIOFILTER
#54Aquarium undergravel filter
#55Modular sand filtration-anchor system and wave energy water desalination system and methods of using potable water produced by wave energy desalination
#56Method for washing a filter having at least two layers of filtering media, in particular for filtering seawater, and equipment for implementing said method
#57Water filter system
#58Method and apparatus for treating liquid containing impurities
#59Modular sand filtration—anchor system and wave energy water desalination system incorporating the same
#60Modular sand filtration-anchor system and wave energy water desalinization system incorporating the same
#61Water filter system
#62Method and apparatus for treating liquid containing impurities
#63Method and computer program product for treating liquid containing impurities
#64Apparatus for treating liquid containing impurities
#65Systems and methods for production of potable water by recycling processed wastewater streams
#66Integrated rapid treatment system for nuclear medical radioactive wastewater and application method thereof
#67Supercoil filtration unit
#68Filtered drinking straw
#69Modular distribution and collection assemblies, filter assemblies, and related methods
#70Continuous water filtration, disinfection and conservation system
#71Nutrient removal filtration system and method
#72Removable dewatering device