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The water treatment dictionary contains short encyclopedic definitions of terms, parameters, technologies and filtration components. Each term answers the question “What is it?” and explains its practical meaning. It is a quick knowledge base for comparing filters, reading water tests and choosing solutions for specific problems.
Search only short glossary definitions in this dictionary section.
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600 terms
A47
- absolute filtration accuracy
- acid-neutralising filter media
- acrylamide in water
- activated carbon
- activated-carbon vessel
- active oxygen
- actual color
- adding salt
- adsorption on carbon
- adsorptive filter media
- advanced oxidation processes
- aeration compressor
- aggressive water
- air aspirator
- air gap tap
- air in the filter
- air injector
- algae in the pool
- alkaline water
- alkalinity
- alkalinity of water
- alkalizing cartridge
- aluminium in water
- ammonia in water
- ammonia removal
- ammonium nitrogen
- ammonium-removal filter media
- anion resin
- anthracite
- anti-algae preparation
- anti-scale filter
- antibacterial filter media
- antibiotics in water
- antimony in water
- antiscalant
- apparent color
- aquarium mineralizer
- aquarium water
- aquifer
- arsenic in water
- arsenic removal
- automatic air vent
- automatic anti-flood valve
- automatic control valve
- automatic filter
- automatic membrane rinsing
- automatic regeneration
B41
- backwash
- backwash
- bacteria in water
- bacterial colonies
- bacterial endotoxins in water
- bacteriological examination
- bacteriophages in water
- ball valve
- bar
- barium in water
- bicarbonates in water
- Big Blue filter housing
- bioceramic insert
- biofilm in the installation
- Birm filter media
- bisphenol A in water
- bitter taste of water
- bituminous coal
- blending
- block activated carbon
- BOD
- boiler stone
- booster pump
- boron in water
- bottleless water dispenser
- BPA-free materials
- breakpoint chlorination
- brine
- brine control
- brine float
- brine grate
- brine overflow
- brine tank
- brine valve
- brine well
- bromates
- bromide in water
- brown water
- brown water in the pool
- bypass in the filter
- bypass valve
C61
- cabinet water softener
- cadmium in water
- calcite
- calcium hardness in pool water
- calcium in water
- capillary membrane
- carbon block
- carbon filtration
- carbon insert
- carbon postfilter
- carbonate hardness
- casing pipe
- catalytic filter media
- cation exchange resin
- centering disc
- central filtration
- central water treatment
- ceramic insert
- chemical disinfection
- chemical membrane flushing
- chloramines
- chlorate in water
- chlorides
- chlorine dioxide
- chlorine reduction
- chlorine stabilizer
- chlorine tablets
- chlorite in water
- Clack valve
- clean water
- cleaning the filter housing
- clogging of cartridges
- Clostridium perfringens in water
- cloudy water
- co-current regeneration
- coagulation
- coconut coal
- COD
- coffee-machine water filter
- coliform bacteria
- colony count at 22°C
- colony count at 36°C
- color reduction
- combined chlorine in pool water
- concentrate
- connection tee
- constant hardness
- contact tank
- contact time
- control valve
- copper in water
- copper installation
- counter-current regeneration
- countertop water filter
- cross-flow filtration
- Cryptosporidium in water
- Crystal Right filter media
- CTO carbon block cartridge
- cyanobacteria in water
- cyanotoxins in water
- cyanurates
D37
- daily production capacity
- dealkalization of water
- deep well
- Defeman filter media
- demineralization cartridge
- demineralization medium
- demineralized water
- deposits on the fittings
- descaling devices
- DHW circulation
- DI cartridge
- DI resin
- diaphragm hydrophore
- diaphragm recoil
- direct-flow RO system
- dirt separator
- dirt trap
- disinfection by-products
- disinfection of installations
- disk filter
- dissolved oxygen
- distilled water
- distribution pipe
- DOC in water
- dolomite
- dose of salt
- dosing pump
- DPD pool-water test
- drain clamp
- drain valve
- drinking water standard
- driven well
- dry RO membrane
- dry skin after bathing
- dry-run protection
- dug well
- duplex water softener
E11
F39
- faucet-mounted water filter
- filter before the softener
- filter behind the softener
- filter cartridge life indicator
- filter gravel
- filter housing
- filter housing O-ring
- filter housing wrench
- filter media
- filter sand
- filter sanitization
- filter water bottle
- filter-bed caking
- filter-bed channeling
- filter-bed expansion
- filter-bed height
- filter-bed rinsing
- filter-bed volume
- filter-media disinfection
- filter-media replacement
- filtration column
- filtration speed
- final filtration
- final rinse
- fine filtration
- first launch of the station
- flat gasket
- flocculation
- flow limiter
- flow resistance
- flow sensor
- fluorides
- flush valve
- flushing the installation
- foam insert
- four-way valve
- free chlorine
- free flow from RO tap
- French degrees
G14
H18
- haloacetic acids
- hard water
- hardness breakdown
- hardness measurement
- head calibration
- healthy water
- hexavalent chromium
- high chlorine in the pool
- high pH
- high pH in the pool
- high pressure switch
- high TDS
- high water conductivity
- hormones in water
- hydraulic bypass
- hydraulic load
- hydrogen sulfide in water
- hydrophore tank
I19
- impregnated carbon
- impulse water meter
- in-line filter
- injector cleaning
- installation corrosion
- installation protection
- instantaneous performance
- ion exchange
- ion exchange capacity
- ion exchange resin
- ion-exchange resin cleaning
- ion-exchange resin regeneration
- ionic charge
- ionite
- iron bacteria
- iron in water
- iron oxidation
- iron removal filter
- iron removal insert
J1
K4
L14
M37
- magnesium in water
- manganese in water
- manganese removal filter
- manometer
- manual control valve
- maximum flow
- mechanical filtration
- mechanical impurities
- mechanical insert
- membrane biofouling
- membrane CIP cleaning
- membrane fouling
- membrane scaling
- mercury in water
- mesh filter
- metallic taste of water
- metered control valve
- mg CaCO3/l
- microbiological contamination
- microcystins in water
- microfiltration
- micron
- microplastics in water
- milky water in the pool
- mineralizer
- minerals in water
- minimum pressure
- mixed resin
- mixed-bed ion-exchange resin
- mixing valve
- mixing water
- monospheric filter media
- monospherical resin
- mud in the water
- multi-stage filtration
- multifunction water-treatment unit
- multifunctional filter media
N23
- nanofiltration
- neutralising filter media
- nickel in water
- nitrate cartridge
- nitrate removal
- nitrate-removal filter media
- nitrates in water
- nitrifying bacteria
- nitrites in water
- no chlorine in the pool
- no water from osmosis
- NO2 in the aquarium
- NO3 in the aquarium
- nominal filtration accuracy
- nominal flow
- non-return valve
- NSF certification
- NSF/ANSI 372
- NSF/ANSI 42
- NSF/ANSI 53
- NSF/ANSI 58
- NTU turbidity
- number of bacteria
O9
P44
- peak performance
- permeate
- permeate pump
- permeate to effluent ratio
- permeate yield
- pesticides in water
- PEX installation
- PFAS in water
- PFOA in water
- PFOS in water
- pH
- pH measurement
- pH neutralization
- pH regulator minus
- pH regulator plus
- pH stabilization
- pharmaceutical residues in water
- phosphates in water
- physicochemical examination
- pleated insert
- POE
- polyphosphate insert
- polyphosphates
- polypropylene insert
- pool coagulant
- pool flocculant
- pool photometer
- pool sand filter
- postfilter
- potassium in water
- potassium permanganate
- POU
- ppm
- pre-filtration
- prefilter
- pressure cylinder
- pressure loss
- pressure reducer
- pressure switch for a water system
- process water
- Pseudomonas aeruginosa in water
- pumping water level
- Pyrolox filter media
- PZH hygienic certificate
Q4
R25
- radon in water
- raw water
- recovery RO
- refrigerator water filter
- regenerant
- regeneration cycle
- removal of heavy metals
- replacing cartridges
- residual hardness
- retentate
- reverse osmosis
- rinsed filter
- rinsing the cartridge
- rinsing the membrane
- RO membrane
- RO membrane housing
- RO membrane replacement
- RO power adapter
- RO prefilter
- RO pressure tank
- RO pump noise
- RO water for the aquarium
- RO/DI system
- rotameter
- rust in water
S53
- safe drinking water
- safety valve
- Salmonella in water
- salt bridge in a softener
- salt consumption
- salt in water
- salt regeneration
- saltwater pool chlorinator
- salty water from the softener
- sample collection point
- sand in the water
- SDI
- secondary water pollution
- sediment at the bottom of the pool
- sediment from pipes
- sediment-carbon filter cartridge
- sedimentation filtration
- selection of treatment stations
- selenium in water
- self-cleaning filter
- service bypass
- service cycle
- sewage restrictor
- sheepskin coat for tea
- shock chlorination
- shower filter
- silica in water
- silver in filters
- Slim filter housing
- slippery water in the pool
- slow rinse
- smart filtered-water faucet
- sodium hypochlorite
- sodium in water
- softened water
- softener controller
- softener inspection
- softener regeneration too often
- softening insert
- specific resistance of water
- spin-down sediment filter
- spot filtration
- spot water treatment
- static water level
- stone in the kettle
- string insert
- strontium in water
- submersible well pump
- sulfides in water
- sulfur
- sulfur bacteria
- surface booster pump
- swimming pool water
T21
- tableted salt
- tap water
- taste of water
- TDS
- TDS in the aquarium
- TDS measurement
- technical water
- temporary hardness
- temporary regeneration
- the smell of chlorine
- the smell of rotten eggs
- the smell of water
- thermal disinfection
- THM in water
- three-way tap
- time-clock control valve
- TOC in water
- total chlorine
- total manganese
- treated water
- Turbidex filter media
U12
V7
W53
- washing-machine water filter
- water acidity
- water aeration
- water aerator
- water after disinfection
- water chlorination
- water color
- water connection
- water decarbonization
- water degassing
- water deionization
- water demineralization
- water desalination
- water distillation
- water filter jug
- water filtration
- water for babies
- water for batteries
- water for the coffee machine
- water for the iron
- water from the well after the rain
- water ionization
- water leak sensor
- water mineralization
- water ozonation
- water pressure drop
- water purification
- water remineralization
- water removal
- water removal
- water resistivity
- water sample collection
- water saturation index
- water softener
- water softening
- water stagnation
- water structuring
- water temperature
- water treatment
- well drawdown
- well gravel pack
- well pumping test
- well screen
- well water
- well water analysis
- well yield
- wellhead cap
- wet RO membrane
- white precipitate
- whole house filtration
- winter measure for the swimming pool
- working capacity of filter media
- working pressure
Y1
Z1
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