U S E R G U I D E

WELCOME TO ADVISOR™CI 1

GETTING STARTED 2

ANTISCALANT 3

BIOCIDES 5

COAGULANTS 6

CLEANERS 7

DECHLORINATION 9

DOSING DESIGN SUMMARY 10

CHEMICAL USAGE SUMMARY 11

REPORT GENERATION 12

Table of Contents

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AdvisorCi is a new way of looking at chemical dosing software. We have exceeded all industry standards

relating to scale prediction by including complex ion formation and improved temperature correction factors

to gain maximum RO system recovery. The complex ion engine can accurately calculate saturations and

dosages for even the most complex and highly stressed applications.

AdvisorCi uses scientifically validated activity coefficient and published peer-reviewed saturation

calculations. Updated solubility products, ksp take into account temperature, pH, and ionic strength.

These changes are then modeled and applied to each projection.

ADVISORCi CALCULATES THE FOLLOWING CHEMICAL DOSING:

• Antiscalant

• Biocide

• Coagulant

• Cleaners

• Dechlorination

• pH adjustment

• Dosing pump flowrates

• Dosing tank sizes

• Chemical consumption

• Chemical usage cost

Datasheet printouts are available for each product calculated as well as summary sheets for dosing

equipment sizing and chemical consumption. You can perform calculations in any order, but we

recommend that project information is completed first, followed by the antiscalant projection as this is key

to sizing all the pre-treatment equipment. The following pages guide you through each screen.

WELCOME TO ADVISOR™Ci

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Start by registering your copy of the software to receive updates as new iterations are released.

SIMPLE NAVIGATION

You will notice a dynamic hover function that highlights parts of the system as you navigate over the corresponding chemical.

The homepage features a left navigation that guides you through the process of entering project data and reviewing result summaries.

Tool tips are available along the bottom of the homepage including the AdvisorCi Users Guide, a new feature spotlight, and easy access to “My Projects.”

CREATING A NEW PROJECTION – 3 EASY STEPS

1. Click on “Start Here Project Info” to enter your project details.

2. For an antiscalant projection, click on “Antiscalant” and input your water analysis data, then click

“Next” to run your calculations. Save your file. You can now calculate other products in any order.

3. Generate a report by clicking the “Print” icon to print or save as a PDF.

GETTING STARTED

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Getting Started

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The antiscalant calculation in Advisor™Ci is based on the requirement for an inhibitor to control scale in

the membrane system concentrate. Raw water analysis data, temperature, and system recovery are used

to analyze the concentrate. This analysis provides the scaling potential to calculate the requirement for

antiscalant, along with updated solubility constant (ksp), curves for temperature, pH, and ionic strength.

RAW WATER

You may input the raw water analysis as mg/l ion, mg/l calcium carbonate or meq/l. The corresponding

values for that ion are automatically calculated and displayed as each input is made. A running total of

anions and cations are calculated and the required level of sodium (in the event of a shortage of cations) or

chloride (in the event of a shortage of anions) is added to balance the analysis.

Please note:

• pH adjustment is not always required for scale control.

• It is necessary to input the feedwater analysis for all projections, even those that will have a brine

analysis entered, as this screen provides pH and temperature data used in other calculations.

ANTISCALANTS

Carbon dioxide, carbonate, bicarbonate levels in feedwater

Total Dissolved Solids (TDS)

Electrostatic potential

Saturation levels in feedwater

If acid or sodium hydroxide is used to alter the feed water pH, then the required chemical may be selected from the pH correction drop-down box. Hydrochloric or sulfuric acid may be selected to decrease the feed pH, or sodium hydroxide may be used to increase the feed water pH. The revised level of carbon dioxide and carbonate is displayed as the pH calculation is made.

Once the water analysis is complete, the antiscalant calculation is made by clicking the “Next” button.

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Antiscalants

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Advisor™Ci calculates saturations for all salts at recoveries of 1-99% before the graph is shown.

The calculation run time is quick but may vary based on computer speed. Brine doses are applied

to control scale and back calculated to a feed dose based on the selected recovery.

Please note: System recovery is included to calculate the feed flowrate only. These calculations will

automatically update the Chemical Design and Chemical Usage Summaries.

CALCULATION

Select a Vitec antiscalant from the drop down list on the top right. There may be several antiscalant options that can control scaling in a system. Please consult your Avista® representative for the most appropriate product for your application.

The dose rate of antiscalant will display below the selected antiscalant. In the event that the scaling potential is outside the antiscalant’s limits, “N/A” (not applicable) will display in place of a dose.

Adjusting system recovery will change the concentrate analysis, thus changing the scaling potential.

A flow rate for the dosing pump is displayed. In the event that the flow rate is below the limits of the available pump, then a dilution may be applied to the antiscalant.

The “Show Analysis” button shows the user the actual brine analysis at selected recovery. Users may switch back to the chart by clicking the “Show Chart” button.

The scaling tendencies for salts that are a concern in RO plants are displayed in graphical form, as well as a table beneath the graph.

Once you are satisfied with your product selection, press the “Submit” button to return to the main page.

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The conventional membrane rejection calculations are not sufficiently accurate for a scaling projection in systems using nanofiltration type elements. Instead, enter the concentrate analysis by clicking the “Concentrate Analysis.” 5

Antiscalants

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Biocide selection and optimization for an RO plant should be considered during the first year of plant

operation. Many plants operate successfully without the use of a biocide as there is no valid test available

to determine the potential requirement for a biocide at the design stage. The biocide dosing can only be

based on experience, either from similar plants or during operation.

Advisor™Ci includes a recommendation for biocide dosing based on the water source and the operating

temperature. This allows a designer to include the necessary equipment or designate space for a dosing

system should it become necessary in the future.

BIOCIDES

Select the appropriate water source and temperature for a recommended biocide and application rate.

In the event that sufficient experience is available, then the second option – “Use the following biocide” – may be selected and the actual biocide dosing regime chosen.

The dosing pump rate for the plant will be calculated based on the total feed flow to the RO plant.

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Biocides

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The best method of selecting of a coagulant for use in pretreating an RO plant is using either jar tests or a

pilot study on site. If this is not possible or practical, we have included options to make an estimate based

solely on the water source or the feed water turbidity and color.

COAGULANTS

Select the correct water source from the drop down list. As the source of the water changes, the recommendation for coagulant based on the water source can be seen as an option immediately below the selection box.

A coagulant recommendation is automatically displayed based on the Raw Water Type selection. Click “Estimate the coagulant consumption based on these raw water parameters” to take into account color and turbidity. Use drop downs to change these parameters. If jar tests or site trials have been completed, then an actual dose rate may be entered by selecting the third option.

An allowance for backwash water may be made as a percentage of feed flow, to account for additional chemical.

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If the pump rate is too low to be dosed accurately with the available dosing pumps, then the concentration in the dosing tank may be varied to increase the dosing pump rate. 4

As the coagulant dose rates are selected the dosing pump rate will be shown in a box.3

Coagulants

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Advisor™Ci can determine cleaning calculations for a system of up to three stages.

CLEANERS

Select the number of stages, number of pressure vessels in each stage, and number of elements in each of the pressure vessels.

A calculation will be made for volumes of fluid held in the pressure vessels, a suitable CIP tank and the volume of the pipework. These may be altered directly by entering a volume or altering the basis of the calculations.

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Cleaners

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The second part of the cleaning section relates to chemical selection.

CLEANER SELECTION

The cleaners may be manually selected by using the drop-down if the “Select Cleaners based on the following foulants” box is unchecked..

Altering the number of cleans per year will change the chemical consumption figures in the summary tables.

The most appropriate cleaners for the application may be selected by clicking the “Select Cleaners based on the following foulants” box.

Select the primary foulant to be removed or, if the foulant is not known, select “Maintenance Clean” for a general purpose cleaner.

The selection may be limited to only powdered cleaners or only liquid cleaners by selecting those options.

Any number of “secondary” foulants may be added.

Selecting the degree of fouling affects the recommended concentration of the chemicals.

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Cleaners

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Dechlorination is essential for any RO plant feedwater containing chlorine. The most common chemicals

used for dechlorination are sodium metabisulfite powder (SMBS) or a solution of sodium bisulfite or

AntiChlor 427. It is important that the chemical used is catalyst-free.

Advisor™Ci allows the operator to vary the level of SBS required, the level of chlorine present in the feed,

and the concentration of the supplied chemical in the tank.

Avista recommends that the water is dechlorinated after filtration, as this will reduce the possibility

of biogrowth in the filtration system and improve the filtration efficacy.

Please Note:

• The required level of sodium bisulfite for dechlorination is between 1.8mg/l and 2.6mg/l of SBS

per mg/l of chlorine. The level required depends on the available contact time and temperature.

DECHLORINATION

The option to dechlorinate before or after media filtration is provided, which allows for the additional chemical required to dechlorinate water for backwash.

If SMBS powder is selected, then the dilution in the tank is automatically set at a maximum of 40%, as this is the maximum solubility practical for this chemical.

Check this box to specify free and combined chlorine for the feedwater.

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Dechlorination

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The chemical design summary gives a table of the products selected with dose rate, concentration in the

tank, and the total pump flowrate to satisfy all of the trains.

Please Note:

• The coagulant dosing system is limited to having a common dosing system for the entire plant.

CHEMICAL DESIGN SUMMARY

By clicking the chemical category, a design summary for the chemical dosing system will display.

For most chemicals, there are three options for the chemical dosing:

1. Single pump and dosing tank dedicated to each train

2. Common dosing for the entire plant

3. Single pump per train drawing from a common tank

If a common dosing system for the whole plant is selected, then the number of dosing pumps may be varied.

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Chemical Design Sum

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The chemical usage summary provides an overview of the products selected, dose rates and annual

chemical consumption. From this screen, a chemical consumption may be generated.

CHEMICAL USAGE SUMMARY

A time-based quantity may be selected: daily, weekly, monthly or quarterly.

Based on the time period set at the top of the screen, a recommendation for the number of packs of each selected chemical will be generated.

The consumption rate units day will display to indicate if a smaller pack size would be more appropriate.

Delivery details can be added, which together with the pack sizes and quantities, will be shown on the quotation request page on the print out.

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Chemical Usage Sum

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REPORT GENERATION

The projection report is generated by clicking the Print button located at the top of each page.

A summary page and pages for Antiscalant, Dechlorination, Biocide, Coagulant, and Cleaners will be generated.

Customize the report by clicking categories that you would like to include. Categories that were not calculated will not be available.

Produce a quotation request page based on the inputs made on the Chemical Usage Summary page.

You my select to print or generate a PDF.

Select category to be included in the file name.

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Report Generation

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INTELLIGENT CHEMICAL DOSING

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Tel. +1.760.744.0536

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REV 01.2016

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