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Water Treatment Patent

Risers for a waste water treatment facility


A riser for use with an access opening in a waste water treatment tank is mounted in a top opening in the waste water treatment tank. The riser includes a top portion and an integral bottom portion wherein the top portion is provided with a downwardly extending side wall and the bottom portion is provided with a downwardly extending skirt. The bottom portion is provided with an inner diameter greater than the outer diameter of the top portion and a ring connects the bottom portion to the top portion. The bottom portion is also provided with an inwardly extending flange having an inner terminating end engagable with the outer surface of the top portion. The top portion is provided with lugs at circumferentially spaced positions for engaging relation with slots in the flange portion for connecting adjacent risers in tandem. A plurality of risers may be connected to each other and in turn, the bottommost riser is connectable to the access opening and the uppermost riser is connectable to a cover usually at ground surface.

Regeneration of water treatment media


Regeneration of water treatment media is disclosed which includes a water treatment unit having one or more media therein, and which upon initiation of flow of the water, imparts turbulence and abrasion to the treatment medium to automatically cleanse the medium of light solid contaminants, as well as contaminant coatings on the media. This greatly improves the operation of the media and extends its life. In addition, the water treatment unit disclosed may simply be rotated through any one of a number of positions between service, backwash, flush, off, and/or bypass operational modes for further regeneration of the treatment media.

Detectable water-treatment polymers and methods for monitoring the concentration thereof

Water-treatment compositions are provided which contain a water-soluble, water-treatment polymer and, optionally, additional water-treatment chemicals. The polymers are prepared from water-treatment monomers and a photo-inert, latently-detectable moiety which is covalently bonded to the polymer backbone. When the residue of the photo-inert moiety is contacted with an amount of a photoactivator which is effective to cause the residue of the photo-inert moiety to absorb within a wavelength ranging from 300 to 800 nanometers, the residue of the photo-inert moiety is detectable at concentrations of less than 100 parts per million. Methods are also provided which allow for the determination of the concentration of low levels, i.e., less than 100 ppm, of the water-treatment polymer present in an aqueous system.


Method and apparatus for controlling concentration of water treatment chemicals
Electrolysis based water treatment
Point-of use water treatment system
On premise water treatment system and method
Risers for a waste water treatment facility
Water treatment method and apparatus
System for controlling water treatment based on plankton monitoring
Water treatment agent and water treatment method for a boiler
Reactor and heat exchanger system for cyanide waste water treatment
Control system for meter actuated regeneration in a water treatment system
Water treatment unit and equipment having the unit
In-home water treatment system
Ballast water treatment systems including related apparatus and methods
Urban runoff water treatment methods and systems
Waste water treatment device

201 6047724 Risers for a waste water treatment facility
202 6042729 Regeneration of water treatment media
203 6040406 Detectable water-treatment polymers and methods for monitoring the concentration thereof
204 6036863 Reactor for use in water treatment and micro film carriers for use in connection with said treatment as well as a method for operating the reactor
205 6036854 System for waste water treatment
206 6030528 Waste water treatment plant for removing nitrogen and phosphorus
207 6030526 Water treatment and purification
208 6016924 Apparatus for cleaning water treatment tank surfaces
209 6010629 Microthrix Parvicella forming and bulking controlling method for waste water treatment
210 6007712 Waste water treatment apparatus
211 5997743 Water treatment method using hollow fiber membrane and apparatus therefor
212 5993669 Method and apparatus for optimizing electrolytic production of a halogen in a water treatment system
213 5992644 Plastic flight type water treatment system for rectangular clarifiers
214 5985148 Water treatment filter wool balls
215 5980754 Process for recovering components of a float material from waste water treatment system
216 5980716 Water treatment apparatus for a fuel cell system
217 5961826 Biological waste water treatment system having a sedimentation tank vertically combined with an aeration tank therein
218 5958232 Reverse osmosis drinking water treatment system with backwashable precise prefilter unit
219 5951866 Cold climate wetland waste water treatment system
220 5951855 Filter and hydraulic mixing assembly for water treatment
221 5948262 Waste water treatment, media therefor and its manufacture
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223 5942110 Water treatment apparatus
224 5935426 Water treatment device with volumetric and time monitoring features
225 5928608 Intermittant spray system for water treatment
226 5928504 Faucet-mounted water treatment device
227 5925240 Water treatment system having dosing control
228 5897777 Waste water treatment system
229 5895565 Integrated water treatment control system with probe failure detection
230 5890750 Tank assembly and method for water treatment
231 5888394 Method and apparatus for sewage water treatment
232 5885458 Wear strip assembly for use in a waste water treatment facility
233 5879565 Cooling tower water treatment system
234 5873995 End-of-life indicator for water treatment device
235 5858248 On premise water treatment method for use in a post-mix beverage dispenser
236 5858219 Cooling tower water treatment system
237 5846418 Point-of-use water treatment system
238 5816181 Ballast water treatment system
239 5814227 Water treatment arrangement
240 5806658 Composite non-metallic and metallic chain for water treatment systems
241 5792360 Water treatment system comprising water-soluble glass
242 5788837 Plastic flight type water treatment system for rectangular clarifiers
243 5785865 Watercraft waste water treatment system and method
244 5785844 End of life mechanism for water treatment cartridge
245 5779896 Gas baffle for a waste water treatment plant effluent
246 5776333 On premise water treatment apparatus
247 5774529 Apparatus to provide a remote display of the operating condition of a water treatment system
248 5772872 Portable swimming pool water treatment system
249 5770059 Waste water treatment apparatus
250 5766465 Water treatment apparatus

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