lime soda calculation

Lime-Soda Ash Softening - MRWA

In both calculation methods, lime and soda ash dosages depends on carbonate and non-carbonate hardness in the water. Lime is used to remove carbonate harness, and both lime and soda ash are used to remove non-carbonate hardness. If total hardness is less than or equal to total alkalinity, there is no non-carbonate hardness (only carbonate ...

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Procedure for calculating the target pH for corrosion ...

Procedure for calculating the target pH for corrosion control with Lime, Soda Ash, or Caustic Soda In order to calculate the target pH, you need to collect the calcium and total alkalinity number from the latest well pChem and measure and record the pH of the effluent water from the aerator. If the same

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Basic principle - Welcome to VITS-Chemistry

• Lime cannot remove the calcium permanent hardness which should be removed by soda. • The precipitation reactions with lime and soda are very slow. • Only calculated amounts of lime and soda are to be added. Excess amount of lime & soda causes boiler troubles like caustic embrittlement. • Calculation of lime & soda required for the ...

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Chemistry of lime-soda softening of cooling water - DRS

values in the _reaction tanks and can be determined by equilibrium-based calculations. Experimental work by Alexander and MClanahan 5 and by Merril and orden 16 indicate ' that steady-state in ·.lime-induced reactions is reached in the order of 10-25 minutes; reaction time of over 25 minutes is achievable in lime-soda ash softeners. 3.

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Lime Softening Study Guide - dnr.wi.gov

Give the necessary data formulas, calculate: 1. Lime dosage to remove carbonate hardness 2. Soda ash dosage to remove non-carbonate hardness 3. Polymer dosage in lbs/mg/L Given pounds of lime used, gallons of water treated, and raw and finished water hardness, calculate parts per million hardness removed per pound of lime.

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CHEMICAL PRECIPITATION: WATER SOFTENING Grégoire …

chemicals required for lime-soda softening and in the design of ion exchange softening units. 5. On the other hand, public acceptance of hardness varies from community to community, ... treatment process necessary for softening this water is the excess lime process. 3.1. Calculation explanations 3.1.1. Estimate the carbonic acid concentration.

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Lime Soda Water Softening Calculations - suncam.com

222-Lime Soda Water Softening Calculations. By: Dr. Harlan H. Bengtson, PE. Preview Course Read/Print Test Author Page. Course Documents, Test Previews and other resources above may attempt to open or download Adobe PDF files. Most modern browsers have built-in PDF readers If you have problems opening this file in your browser, check your ...

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Lime-Soda Water Softening Process and its Advantages Notes

Lime-Soda Water Softening Process: Soda lime is a process used in water treatment to remove Hardness from water. This process is now obsolete but was very useful for …

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WTRG18 Water Softening and Hardness - Tallahassee, FL

WTRG18 Water Softening and Hardness 5/1/15 3 Benefits of Lime Softening Removal of Ca and Mg hardness Removal of iron, manganese, arsenic and uranium. Reduction of solids, turbidity and TOC Removal and inactivation of bacteria and viruses due to high pH. Raises pH and prevents Corrosion Removal of excess fluoride. 7 Types of Lime Used in WTP

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excess lime water softening process Archives - Low Cost ...

May 18, 2012· Where to Find Spreadsheets for Lime Soda Water Softening Calculations. For Excel spreadsheets to make lime soda water softening calculations, click here to visit our spreadsheet store. Obtain convenient, easy to use spreadsheets for lime soda water softening calculations at reasonable prices. Read on for information about the use of Excel spreadsheets for this application.

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Engineering Excel Templates Downloads

These Excel spreadsheets will make calculations for water softening, using lime and caustic soda or just caustic soda, including dosages and daily requirements for lime (if used), caustic soda and carbon dioxide, as well as estimates of daily solids production.

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Lime Soda Water Softening Calculations - Amazon S3

For lime soda softening dosage calculations, knowledge about the anions (negative ions) in the water is needed in addition to knowledge about the amount of calcium hardness and magnesium hardness.With reference to the type of anions present,

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REMOVAL OF HARDNESS BY PRECIPITATION

Lime-Soda Ash Softening Process 10 • When lime and soda ash are added, hardness-causing minerals form nearly insoluble precipitates. • In lime-soda ash softening process Ca2+ is removed from water in the form of calcium carbonate, CaCO 3 (s) and • Mg2+ is …

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Calculate lime & soda recorded for softening 1 litre of water.

A water sample has the analytical report as under: MgCO,– 84 ppm, CaCO, = 40 ppm, CaCl2 - 5 ppm, Mg (NO), -37 ppm, KCl = 10 ppm. Calculate lime & soda recorded for softening 1 litre of water.

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(PDF) 21 Water Softening CALCULATING CALCIUM HARDNESS AS ...

The molecular weights of various chemicals and compounds used in lime–soda as softening calculations are as follows: Chemical or Compound Molecular Weight Quicklime (CaO2) 56 Hydrated lime (Ca(OH)2) 74 Magnesium (Mg2+) 24.3 Carbon dioxide (CO2) 44 Magnesium hydroxide (Mg(OH)2) 58.3 Soda ash (Na2CO3) 100 Alkalinity (as CaCO3) 100 Hardness (as ...

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Gardening Calculators: Limestone - Garden.org

« Select a different calculator. What is limestone? When gardeners talk about "lime" or "limestone," they mean either calcium carbonate (calcite or calcitic limestone), or calcium-magnesium carbonate (dolomite or dolomitic limestone). Of the two forms, dolomite is preferred as it …

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Soda lime - Wikipedia

Soda lime is a mixture of NaOH & CaO chemicals, used in granular form in closed breathing environments, such as general anaesthesia, submarines, rebreathers and recompression chambers, to remove carbon dioxide from breathing gases to prevent CO 2 retention and carbon dioxide poisoning.

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Chapter 07 - Precipitation Softening | SUEZ

For cold lime-soda softening, where effluent magnesium hardness is significantly greater than in hot lime or soda, the control range above may be inappropriate. For cold lime—soda units, soda ash can be controlled such that: 2(M - P) - Calcium hardness = 20-40 ppm.

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Lime Softening Calculation Spreadsheet? - Water treatment ...

Jan 04, 2007· Currently I am working on hot lime softening project. Would anyone be able to recommend a source for hot lime softener modeling software to help calculate lime, soda ash and MgO feed rates for treatment of a given water? Perhaps just an Excel spreadsheet program to share and perhaps build upon. Many thanks.

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How to Calculate Lime Dosage Requirement in Sedimentation ...

Lime dosage requirement is most important process in Sedimentation Process, to separate the solids from liquid by gravity. Sedimentation is the basic process, whether water and wastewater treatment, In water treatment process, first remove Girt / fine fibers in presedimentation basin and follows coagulation–flocculation is most commonly used.

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Lime Soda Softening Process Calculations eBook: Harlan ...

There is also information about three lime soda water softening process alternatives (two stage excess lime water softening, split treatment, and selective calcium removal), along with calculation of the dosages needed for lime, soda ash, and carbon dioxide. Calculations are presented for daily chemical requirements and solids production rates.

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CHEMICAL PRECIPITATION: WATER SOFTENING

CHEMICAL PRECIPITATION: WATER SOFTENING Submitted to: Dr. Hashsham ... Sample Calculation to Determine the Lime Dosage 11 Appendix-3 13 ... In the lime soda ash process, lime is added to raise the pH while sodium carbonate is added to provide a source of carbonate ion.

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Water Supply and Pollution Control - MIT OpenCourseWare

Summary of chemical dosage calculations required for lime & lime-soda ash softening* PROCESS REQUIRED CHEMICAL DOSAGE CALCULATIONS Single-Stage Lime: For waters with high calcium, low magnesium, & carbonate hardness Lime addition for softening: CaO = {carbonic acid concentration} + { calcium carbonate hardness} Soda ash addition for softening: Na

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Lime and Soda Numericals - YouTube

Sep 06, 2017· This video is a solution of Problems given for Lime and Soda process in the video of Water and its treatment.

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lime soda calculation - zonenzeebungalowverhuur.nl

Lime Soda Water Softening Calculations - Amazon S3. For lime soda softening dosage calculations, knowledge about the anions (negative ions) in the water is needed in addition to knowledge about the amount of calcium hardness and magnesium hardness.With reference to the type of anions present, 222-Lime Soda Water Softening Calculations - Suncam

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Simulation of lime-soda softening - DRS

equilibrium-based calculations. Experimental work by Alexander and MClanahan (1) and by Merril and Jorden (6) indicate that steady-state in lime-induced reactions is reached in the order of 10-25 minutes; reaction time of over 25 minutes is achievable 'in lime-soda ash softeners. 3. There is no transfer of co 2 with the atmosphere. 4.

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Lime-Soda Water Softening Process | Limitation of Soda ...

Soda lime is a process used in water treatment to remove Hardness from water. This process is now obsolete but was very useful for the treatment of large volumes of hard water. Addition of lime (CaO) and soda (Na2CO3) to the hard water precipitates calcium as …

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Lime Soda Water Softening Excel Spreadsheets

Lime Soda Water Softening Background. Lime soda softening uses addition of lime and soda ash to remove Ca ++ and Mg ++ ions, bringing their concentration down to an acceptable level. The lime may be in the form of quicklime (CaO) or hydrated lime (Ca(OH) 2), also called slaked lime. Soda …

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Soda–lime glass - Wikipedia

Soda–lime glass, also called soda–lime–silica glass, is the most prevalent type of glass, used for windowpanes and glass containers (bottles and jars) for beverages, food, and some commodity items. Glass bakeware is often made of borosilicate glass. Soda–lime glass accounts for about 90% of manufactured glass.

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