| There are several process choices in the APPLICATIONS section. You
can select as many processes as you require. For example, a TWO
BED DEIONIZER is often followed by a MIXED BED DEIONIZER, but not
in all cases. You may want to explore whether or not a DEALKALIZER,
a DESILICIZER, or a SOFTENER would be an appropriate process approach.
If they are selected, we will provide the projection reports for
INFLUENT WATER CHEMISTRY
- Each INFLUENT WATER CHEMISTRY should
be submitted on a separate FORM 300. The exception to
this is the MIXED BED DEIONIZER. The MIXED BED DEIONIZER projection
is based on the TWO BED DEIONIZER effluent criteria, unless you
provide a different influent analysis.
The CATIONS and ANIONS sections each has two
input columns, so that you can enter the concentration of the
various ions, either as themselves (as the ION) using milligrams
per liter (mg/L), which is the same as parts per million, (PPM)
or as their calcium carbonate (as CaCO3) equivalent.
Conversion factors are provided so that you can easily convert
from the "as the ION" to "as CaCO3". TOTAL CATIONS
as CaCO3 should equal TOTAL ANIONS as CaCO3.
It is not necessary to fill in all of the items. Any items that
are left blank will be assumed to be zero. However, if you know
that a substance is present, but don't have the analysis, enter
a question mark in its box, and we will attempt to estimate the
third section of the INFLUENT WATER CHEMISTRY includes CARBON DIOXIDE and SILICA, which both exist as un-ionized
acids. Therefore, they don't have corresponding cations. The CONDUCTIVITY
should be entered as micromhos (mmho), which is the same as µ/cm.
Generally, the total CATION or ANION content as CaCO3 is equivalent to the conductivity in micromhos divided by 2.5.
Enter the untreated inlet water TEMPERATURE and circle degrees
F, (°F) or degrees C (°C).
CONDUCTIVITY, TDS, SODIUM and SILICA should all be entered as
the ION. You should provide both the AVERAGE and the MAXIMUM allowable
values. The MAXIMUM allowable value effects the operating capacity.
It tells us when the resin bed has to be taken out of service
and how much capacity needs to be sacrificed during the post regenerant
rinse. If no value is entered, a default value will be used.
REGENERATION INFORMATION is broken into two areas. CATION REGENERANT and ANION REGENERANT. SODIUM CHLORIDE
and POTASSIUM CHLORIDE are alternate selections for SOFTENERS.
HYDROCHLORIC ACID and SULFURIC ACID are alternate selections for
2 BED or MIXED BED DEIONIZERS and CATION DEALKALIZERS. COCURRENT
or COUNTER CURRENT regeneration direction should be selected,
or select LOOK AT BOTH and ratings for each will be provided.
Under ANION REGENERANT, SODIUM
CHLORIDE or SODIUM CHLORIDE/NaOH can be selected for regenerating
DEALKALIZERS or ORGANIC REMOVAL systems. SODIUM CHLORIDE is the
only regenerant available for the NITRATE REMOVAL systems.
HYDROXIDE is used for 2 BED and MIXED BED DEIONIZERS and DESILICIZERS.
In these applications, the TEMPERATURE OF THE CAUSTIC has an impact
on silica leakage and can be selected as either UNHEATED, 95 or
120 degrees Fahrenheit. The regeneration process can be COCURRENT
or COUNTERCURRENT. If you want a projection done for both methods,
select LOOK AT BOTH.
BED DEPTH - It is usually not
necessary to fill out this section. Please note that the default
BED DEPTH values are different for COUNTERCURRENT and COCURRENT
applications. Higher BED DEPTHS offer greater economy, and therefore
are sometimes specified as part of the design criteria. You can
enter your preferred BED DEPTH in FEET or METERS. Space is provided
DESIGN FACTOR - This is the
safety factor. It is the percentage of the potential performance
capability of the resin that you want to use for the design of
the system. Values of 65 to 90% are typically used. The DESIGN
FACTOR accounts for distribution losses, less than perfect resin
utilization due to system geometry, seasonal changes in water
chemistry and temperature etc. You can put in any number from
zero to 100%. If no value is inputted, the system will use 100%
as the default value. The design factor used is included
in the projection reports.