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Water Treatment Patent

Reactor and heat exchanger system for cyanide waste water treatment


A waste water treatment system for high temperature hydrolysis of cyanides has a reactor operating at a sufficiently high temperature and pressure to effect hydrolysis of cyanide in the waste waters. A heat exchanger system is provided through which reactor effluent and reactor influent streams flow. The improved waste water treatment system includes a first tube in tube heat exchanger for an influent stream and a second tube in tube heat exchanger for an effluent stream. A heat exchange medium is circulated between the effluent heat exchanger and the influent heat exchanger to cool down the effluent and in turn use the heat to heat up the influent to the reactor. The heat exchangers are arranged such that the influent and effluent streams pass through the tube side of each heat exchanger to minimize clogging of the first and second heat exchangers, while at the same time providing for effective heat exchange in cooling the effluent and heating up the waste waters to be treated.

All-in-one boiler water treatment composition


An all in one boiler water treatment composition includes an oxygen scavenging system, an alkalinity control agent such as sodium carbonate, diethylaminoethanol as a condensate treatment, a polymer system including polymethacrylate or polyacrylate and polymaleic acid along with an oxygen scavenging system. The oxygen scavenging system includes the diethylaminoethanol, a polyhydroxy acid and a sulfite.

High-rate biological waste water treatment process using activated sludge recycle

A high-rate biological waste water treatment process for removing organic tter, phosphorus and nitrogen nutrients from municipal waste water comprising the steps of mixing the influent waste water in an initial anaerobic reactor zone to maintain the biological solvents in suspension with a denitrified mixed liquor from a downstream anoxic reactor zone, typically at a flow rate of 0.5 to two times the waste water flow rate. The reactor zone serves to select microorganisms capable of accumulating quantities of phosphorus in excess of that required for simple cell growth and reproduction. The phosphorus removal occurs due to the removal of excess sludge (waste activated sludge) produced in the process wherein such sludge can be removed from the clarifier underflow or as a mixed liquor directly from the biological reactor.


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

401 4877519 Reactor and heat exchanger system for cyanide waste water treatment
402 4874541 All-in-one boiler water treatment composition
403 4867883 High-rate biological waste water treatment process using activated sludge recycle
404 4857184 Self-contained water treatment system and enclosure
405 4855061 Method and apparatus for controlling the coagulant dosage for water treatment
406 4853131 Method for water treatment
407 4847598 Water treatment regeneration system incorporating alternating current excitation and paired operational amplifiers with asymmetrical feedback elements
408 4844800 Apparatus for waste water treatment
409 4844796 Full water treatment apparatus for use in soft drink dispensing system
410 4830748 Apparatus for cleaning algae and debris from a water treatment tank
411 4825083 Ultraviolet water treatment apparatus
412 4818413 Biocide water treatment having reduced copper corrosion
413 4814125 Fixing carrier for activated sludge in sewage or waste water treatment
414 4814085 Fixing carrier for activated sludge in sewage or waste water treatment
415 4804465 Water treatment apparatus
416 4775513 Water treatment and soil testing
417 4775485 Method for water treatment
418 4770790 Treatment and prevention of fouled water treatment solids
419 4769144 Water treatment apparatus
420 4764053 Method of installing a floatable pump apparatus and an anti-erosion plate in a water treatment basin
421 4757205 Ultraviolet water treatment apparatus
422 4707263 Water treatment package
423 4695379 Water treatment apparatus
424 4693814 Water treatment apparatus
425 4692314 Water treatment systems
426 4687574 Water treatment system
427 4666609 Water treatment agent
428 4654139 Flocculation basin in water treatment process
429 4648043 Computerized system for feeding chemicals into water treatment system
430 4647375 Apparatus for universal water treatment
431 4620895 Apparatus for manufacturing a square filler for water treatment
432 4594156 Motorized surface scum skimmer for waste water treatment apparatus
433 4577498 Double multiple change-over valve, for controlling the operation of a water treatment plant
434 4576716 Method of producing water treatment medium and medium produced thereby
435 4569756 Water treatment system
436 4568465 Water treatment system and control therefor
437 4534952 Small scale generation of chlorine dioxide for water treatment
438 4529511 Water treatment container
439 4526685 Waste water treatment plant
440 4522714 Water treatment apparatus
441 4485012 Adjustable magnetic water treatment system
442 4454044 Water treatment process
443 4448696 Process for recovering and recycling coagulant present in water treatment sludges
444 4419235 Gravity fed water treatment apparatus
445 4407719 Magnetic water treatment apparatus and method of treating water
446 4397743 Water treatment method
447 4385357 Water treatment system and control therefor
448 4363733 Process for water treatment by flocculation
449 4351722 Water treatment plant
450 4340472 Water treatment plant

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