Modular Sampling/Sensor Array

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Modular Sampling/Sensor Array For Water Quality
Monitoring David M. Simko Swagelok
Company IFPACSM2004 Arlington, Virginia January
12-15, 2004
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Water The Essential Fluid
For Municipal, residential, commercial,
institutional, industrial Focus on
industrial Chemical, petrochemical,
refining, pulp and paper, power, food and
beverage, pharmaceutical, and
semiconductor manufacturing Water
can be used as a utility, a reactant, or a
raw material
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Water Quality Primary Measurements
General qualitative description of water
Color, odor, taste, clarity Quantitative
measurements of water quality pH
hydrogen ion concentration ORP
oxidation-reduction potential
Conductivity total ionic concentration
Dissolved oxygen specific applications
Other
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Water Use - Chemical/Petrochemical
Heat transfer medium condensers, heat
exchangers, cooling towers, etc. Raw material
diluent Solvent washing product/equipment Re
actant (Ex.) producing high-purity
hydrogen in a steam reformer
PRIMARY QUALITY CONSIDERATION CORROSION
RESISTANCE
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Water Use Refining
Water is used in almost every refining process
from alkylation through visbreaking
As much as 77,000 gallons/100 barrels of crude
Primary heat transfer medium
PRIMARY QUALITY CONSIDERATION CORROSION CONTROL
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Water Use Pulp and Paper
Water flows within every line in the utilities,
pulping operations, and on the paper making
machine Water usage 7,920
gallons/ton of pulp mechanical pulping
39,600 gallons/ton of pulp chemical pulping
Applications Cooking pulp, drying
paper, cooling
PRIMARY QUALITY CONSIDERATION CORROSION,
SCALE, AND BIOLOGICAL CONTROL
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Water Use Power Generation
Treated water is the process fluid in a power
plant Conductivity measured at all key
points pH measurement focused in the steam
area DO measured around the deaerator Usage
depends upon the size and design of the power
plant
PRIMARY QUALITY CONSIDERATION CORROSION AND
SCALE CONTROL
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Water Use Food and Beverage
Food and beverage processing are
sanitary industries Typical annual US
consumption Beer 6.2 billion gallons
Carbonated soft drinks 15.2 billion
gallons Water 6.3 billion gallons Water
is the primary raw material
PRIMARY QUALITY CONSIDERATION CHEMICAL/
BIOLOGICAL CONTAMINATION
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Water Use - Pharmaceutical
Water is the most widely used raw material in the
pharmaceutical industry Pharmaceutical grade
waters Potable, purified, WFI, reageant
Utility grade waters Plant and clean steam,
chilled water
PRIMARY QUALITY CONSIDERATION APPLICATION
SPECIFIC CHEMICAL, MICROBIAL, AND PHYSICAL
ATTRIBUTES
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Water Use Semiconductor Mfg.
Requires the highest purity water attainable, in
large amounts Example For a
reasonable size integrated facility
Make-up 450 gallons/minute Reclaim 250
gallons/minute
PRIMARY QUALITY CONSIDERATION PARTICULATE ,
DISSOLVED CHEMICALS
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Water Quality Measurement Tools
pH, ORP, Conductivity, DO Probe , electrodes
based upon potentiometric methods Numerous
manufacturers/suppliers (Sensors Magazine Buyers
Guide pH - 79
ORP - 55
Conductivity - 86 Dissolved
oxygen - 70 Many offer all or several of the
devices
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Water Quality Measurement Tools
Devices must be adapted to meet ANSI/ISA
76.00.02 Most manufacturers offer inline
mounting provisions for their devices, many times
a bore-through Swagelok tube fitting Substrate
manufacturers must work with the device
manufacturers to make adapter/NeSSI in-line
mounting provisions available
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Water Quality Sensor Platform c.2000
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Water Quality Sensor Platform c.2000
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Water Quality Sensor Platform c.2000
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Water Quality Sensor Platform c.2004
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Water Quality Sensor Platform c.2004
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Water Quality Sensor Platform c.2004
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