Water Treatment Handbook: Index

S & P
Salinity
Salt passage (in reverse osmosis)
Sample preservation
Sampling (for analysis)
Saturation (index, - pH)
Saturation pH (pHs)
SBR
Scale-forming water
Scaling
Schistosomiasis
Scraper bridges
Screw press
SD clarifier
SDI
Sea water

composition
corrosion caused by -
for re-injection into an oilfield
seawater desalination

Seawater evaporators
Secondary settling tanks

choosing a clarifier
dimensioning clarifiers
EFA clarifier
RACSUC clarifier
range of circular clarifiers
SD clarifier
SLG rectangular clarifier
SUCCIR clarifier
SV clarifier
technological considerations

SEDIFLOTAZUR
SÉDIPAC D et 3D
SÉDIPAC FD
Seeking thermal self-sufficiency
Selecting and designing a disinfection system
Selecting ozonation reactors
Selecting technologies for a drinking water line
Selecting technologies for an IWW line
Selecting the carbonaceous support (composting)
Selector switch
Selenium
Semi-wet system (flu gas scrubbing)
Semiconductor industry

effluent recycling
treatment of effluent
ultra pure water

Separating oily suspensions
Sequential batch reactors (SBR)
Series - Discharge (membrane layout)
Settling

ballasted floc type
diffuse
DSVI
Hazen rate
Kynch curve
lamellar
lamellar modules (types choice of type)
plug-flow mode
primary (WW)
secondary
sludge contact
sludge index (IB)
solids loading
surface hydraulic loading
velocity study

Settling tanks

ACCELATOR
CENTRIDEG
CIRCULATOR
clarifiers
DENSADEG 2D and 4D
DENSADEG
desludging
FA and P2R settling tanks
Gyrazur
lamellar static
lamellar static settling tanks
PULSATOR
PULSATUBE (or PULSATOR T)
scraped rectangular settling tank
SÉDIPAC D and 3D
SÉDIPAC FD, 843
settling tank design, 230
sludge blanket clarifiers, 843
sludge recirculation clarifiers, 851
static, 833
static settling tanks, 833
SUPERPULSATOR (or PULSATOR S)
THERMOCIRCULATOR
TURBOCIRCULATOR
ULTRAPULSATOR (or PULSATOR U)

SI (French): International System of measurement units
Silica

activated
removal of
solubility

Silica removal
Siphons (filter control using -)
SLG (rectangular clarifier)
Slow filtration
Sludge (examination and capacity for treatment)

CST
DM
drainability
dry solids content produced by a centrifuge (forecast)
filtrability
grease, oil
sludge characterisation
specific filtration resistance
suspended solids
VFA
VS

Sludge (excess) production
Sludge (liquid) dewatering

belt pressure filter
centrifugation
dewatering lagoons
dryer beds over sand layers
filter presses
screw presses
vacuum filtration

Sludge age
Sludge blankets (in flocculationsedimentation)
Sludge blankets (in methane fermentation)
Sludge characterisation
Sludge cohesion
Sludge composting
Sludge conditioning

chemical conditioning
mineral reagents
synthetic polyelectrolyte (application)
thermal conditioning

Sludge contact (flocculationsedimentation)
Sludge contact (methane fermenter)
Sludge end use

impact on treatment systems,
limitations on agricultural reuse or disposal to landfill sites

Sludge examination
Sludge granulation (methane fermentation)
Sludge handling and storage
Sludge index (IB)

Sludge pasteurisation
Sludge recirculation (in flocculationsedimentation)
Sludge recycling

agricultural
energy

Sludge sanitation
Sludge stabilisation

aerobic thermophilic digestion
anaerobic digestion
lime treatment of dewatered sludge
lime treatment of liquid sludge
mesophilic aerobic stabilisation
sludge composting

Sludge thickening

centrifugation
dynamic thickening
flotation
full-flow pressurisation (flotation unit)
GDD - GDE
static thickening

Sludge treatability
Sludge treatability tests
Sludge treatment

drinking water sludge
examples of typical lines
general sludge treatment lines
sludge characterisation
sludge classification
sludge end use
sludge handling and storage

Small standard units (DW and UWW)

BIO-S
PULSAPAK
Rhizopur
S & P
UCD
UEP (French): pesticide removal unit
Ultrasource

SO₂ - bisulphite
Sodium bisulphite
Sodium chloride (storage)
Sodium chlorite
Sodium silicate
Sodium sulphite
Softening

using ion exchangers
using lime
using nanofiltration
using sodium carbonate
using sodium hydroxide

Solids loading (settling tank)
Solubility

buffer solutions
common solutions
gas solubility in water
product of -

Solubility product (SP)
Solution density
Source of odour-emitting compounds
Specific filtration resistance
Spectrophotometry
Spraying
SSA (salt of strong acid)
Stability diagram
Stainless steel
Standard plants
Statistics
Steam generator feed water quality
Steel
Steel making industry

blast furnaces
coking plant
coking plant ammonia water
continuous casting
gas scrubbing
pickling
rolling mills
steel mills

Steel mills
Steel mills
Stepped feed
Stokes (law)
Storing and distributing powdered reagents
Storing raw water
Strainer
Straining
Strippers
Strippers (air-)
Stripping
SUCCIR
Sugar mills
Sulphate

action on concrete
solubility of calcium sulphate
sulphate removal

Sulphate removal

by precipitation
from drinking water

Sulphides (oxidation of -)
Sulphur
Sulphur cycle
Sulphur reducing agents (bacteria)
Summary of clarification treatments
Superimposed beds
SUPERPRESS HP
SUPERPRESS LP
SUPERPULSATOR or PULSATOR S
Supervision (of plants)
Surface aeration
Surface hydraulic loading (sedimentation)
Surface tension
Surface treatments (industry of)
Surface treatments industry

detoxification
recycling

Surface water
Surface water treatment

clarification
coagulation over a filter
complete clarification treatment (examples)
direct filtration
disinfection
membrane processes
polishing (O₃ and/or GAC)
possible lines
pre-oxidation
pre-oxidation using chlorine
pre-oxidation using other oxidants
pre-oxidation using ozone
pre-treatments
problems associated with algae and

zooplankton

summarised clarification treatments

Suspended growths
Suspended solids,
Suspended solids in sludge
SS
Sustainable development
SV clarifier
SVI
Sweep velocity - grit sedimentation
Swimming pool

HYDRAZUR filter
swimming pool water disinfection

Symbols for electrical diagrams
System layout (industrial effluent)