Material Content Section - Water Quality
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Navigation: Models ➔ Common Sections ➔ Material Content Section ➔ Water Quality
| Material (Content) | Content Tab Include Properties | Species (Sp) | Optional Tabs | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic Information | Energy ValuesAtUserTandP | Density Correction Solubility Saturation | Acidity Charge Transport | HeatsOfCombustion Heating Values | Solution Impurity H2O Properties | Water Quality | Sp Tab EC Tab | DLockup LockUp | DTrack Track | DSz Sz MSz | DSSA SSA |
Related Links: Common Content Section, Plant Model - Water Quality Tab
Water Quality
This section will show water quality values. These will only be shown if the user has chosen to display the WaterQualities in the Plant Model - Views tab page or from the Include Properties dropdown list on the first page of the material Content section. The values will appear on a new tab page called 'WQ'.
Note: As defined on the Plant Model - Water Quality Tab, some calculations require specific aqueous species (mostly ionic species) to be defined within the project. The required species for each calculation are defined in this section.
| Tag (Long/Short) | Input / Calc | Description/Calculated Variables / Options |
| WQ (Water Quality) | ||
| WaterMass / WaterMt | Calc | The mass of pure water in the content. |
| LiquidMass / LMt | Calc | The mass of liquids in the content. |
| LiquidVol / LVt | Calc | The volume of liquids in the content. |
| Alkalinity (as CaCO3 equivalent) | ||
| Alkalinity.Total | Calc | The Total Alkalinity is defined as: [HCO3-(aq)] + 2*[CO32-(aq)] + [OH-(aq)] + [B(OH)4-(aq)] + 3*[PO43-(aq)] + 2*[HPO42-(aq)] + [H2PO4-(aq)] + [SiO(OH)3-(aq)] - [H+(aq)] - [HSO4-(aq)] - [F-(aq)] and is reported as CaCO3 equivalent liquid concentration. Not all ions have to be present in the project. The Total Alkalinity is sometimes referred to as M-Alk (Methyl-orange Alkalinity) as it represents the methyl-orange titration end-point at pH = 4.5. |
| Alkalinity.Carbonate / Carb | Calc | The Carbonate Alkalinity is equal to the concentration of the aqueous carbonate ion (CO32-(aq)), reported as CaCO3 equivalent liquid concentration. |
| Alkalinity.BiCarbonate / BiCarb | Calc | The Bicarbonate Alkalinity is equal to the concentration of the aqueous bicarbonate ion (HCO3-(aq)), reported as CaCO3 equivalent liquid concentration. |
| Alkalinity.Hydroxide / Hydrox | Calc | The Hydroxide Alkalinity is equal to the concentration of the aqueous hydroxide ion (OH-(aq)), reported as CaCO3 equivalent liquid concentration. |
| Alkalinity.P_Alk | Calc | P-Alk (Phenolphthalein Alkalinity) represents the phenolphthalein titration end-point at pH = 8.3. It is defined as: [OH-(aq)] + 0.5*[CO32-(aq)], reported as CaCO3 equivalent liquid concentration. |
| Acidity | ||
| EquivalentMineralAcidity / EMA | Calc | The Equivalent Mineral Acidity (EMA) is defined as: [Cl-(aq)] + [SO42-(aq)] + [NO3-(aq)] + [PO43-(aq)] + [B(OH)4-(aq)] + [F-(aq)] + [Br-(aq)] + [ClO4-(aq)] and is reported as CaCO3 equivalent liquid concentration. Not all ions have to be present in the project. |
| FreeMineralAcidity / FMA | Calc | The Free Mineral Acidity (FMA) is defined as the sum of the following liquid concentrations: [Cl-(aq)] + [SO42-(aq)] + [NO3-(aq)] + [PO43-(aq)] + [B(OH)4-(aq)] + [F-(aq)] + [Br-(aq)] + [ClO4-(aq)] Not all ions have to be present in the project. |
| Hardness (as CaCO3 equivalent) | ||
| Hardness.Total | Calc | The Total Hardness (TH) is defined as the sum of all multivalent (charge >= 2) aqueous cations such as Al3+(aq), Ba2+(aq), Ca2+(aq), Fe2+(aq), Fe3+(aq) and Mg2+(aq), reported as CaCO3 equivalent liquid concentration. |
| Hardness.NonCarbonate / NonCarb | Calc | The Non-Carbonate Hardness is equal to Total Hardness - Total Alkalinity, reported as CaCO3 equivalent liquid concentration. |
| Hardness.Carbonate / Carb | Calc | The Carbonate Hardness is equal to Total Hardness - Non-Carbonate Hardness = Total Alkalinity, reported as CaCO3 equivalent liquid concentration. |
| Hardness.Calcium / Ca | Calc | The Calcium Hardness is equal to the concentration of the aqueous calcium ion (Ca2+(aq)), reported as CaCO3 equivalent liquid concentration. |
| Hardness.Magnesium / Mg | Calc | The Magnesium Hardness is equal to the concentration of the aqueous magnesium ion (Mg2+(aq)), reported as CaCO3 equivalent liquid concentration. |
| Solids | ||
| TotalDissolvedSolids / TDS | Calc | The Total Dissolved Solids (TDS) is the sum of all liquid species (not including water), reported as a liquid concentration. This is equivalent to performing a TDS analysis in the laboratory at 105°C. |
| TotalDissolvedSolids@180 / TDS@180 | Calc | The Total Dissolved Solids (TDS) at 180 is equivalent to performing a TDS analysis in the laboratory at 180°C. At this temperature the bicarbonate breaks down as follows: 2HCO3-(aq) -> CO32-(aq) + CO2(g) + H2O(g) Thus TDS@180 is equal to the sum of all liquid species (not including water) except every mole of HCO3-(aq) is replaced with half of mole of CO32-(aq), and it is reported as a liquid concentration. |
| AqTotalDissolvedSolids / AqTDS | Calc | The Aqueous Total Dissolved Solids (AqTDS) is the sum of all aqueous species (not including water), reported as a liquid concentration. |
| TotalSuspendedSolids / TSS | Calc | The Total Suspended Solids (TSS) is the sum of all solids species, reported as a slurry (liquids + solids) concentration. |
| Carbon (as C Concentration) | ||
| TotalCarbon / TC | Calc | The total concentration of carbon in the content (both solids and liquids), reported as a slurry (liquids + solids) concentration. All liquid and solids species which contain carbon will contribute to this value. |
| TotalOrganicCarbon / TOC | Calc | The concentration of organic carbon in the content based on the user selected organic carbon species on the WaterQuality tab of the Plant Model, reported as a slurry (liquids + solids) concentration. |
| TotalInorganicCarbon / TIC | Calc | The Total Inorganic Carbon (TIC) is simply the difference between the Total Carbon (TC) and the Total Organic Carbon (TOC), reported as a slurry (liquids + solids concentration). All liquid and solids species which contain carbon and have NOT been selected as organic carbon species on the WaterQuality tab of the Plant Model, will contribute to this value. |
| DissolvedOrganicCarbon / DOC | Calc | The concentration of organic carbon in the content based on the user selected liquid organic carbon species on the WaterQuality tab of the Plant Model, reported as a slurry (liquids + solids) concentration. |
| SuspendedOrganicCarbon / SOC | Calc | The concentration of organic carbon in the content based on the user selected solid organic carbon species on the WaterQuality tab of the Plant Model, reported as a slurry (liquids + solids) concentration. |
| Oxygen and Oxygen Demand (as O2 Concentration) | ||
| DissolvedOxygen / DO | Calc | The liquid concentration of aqueous oxygen (O2(aq)). |
| ChemicalOxygenDemand / COD | Calc | The oxygen required for chemical oxidation of material in the content (such as by potassium dichromate), reported as a liquid concentration of aqueous oxygen (O2(aq)). This is calculated by multiplying the Total Organic Carbon (TOC) by a user-defined factor which is set on the WaterQuality tab of the Plant Model. |
| UltimateBiochemicalOxygenDemand / UBOD | Calc | The ultimate amount of oxygen required by micro-organisms to break down organic material in the content, reported as a liquid concentration of aqueous oxygen (O2(aq)). This is calculated by multiplying the Total Organic Carbon (TOC) by a user-defined factor which is set on the WaterQuality tab of the Plant Model. |
| BiochemicalOxygenDemand5 / BOD5 | Calc | The oxygen required by micro-organisms to break down organic material in the content in the first 5 days, reported as a liquid concentration of aqueous oxygen (O2(aq)). This is calculated by multiplying the Ultimate Biochemical Oxygen Demand (UBOD) by (1-10^(-5k)), where k is the user-defined rate constant (units /day), which is set on the WaterQuality tab of the Plant Model. This equation assumes that any oxidation is a first-order reaction. |
| Nitrogen (as N Concentration) | ||
| Nitrogen.Total | Calc | The total concentration of nitrogen in the content (both solids and liquids), reported as a slurry (liquids + solids) concentration. All liquid and solids species which contain nitrogen will contribute to this value. |
| Nitrogen.Organic | Calc | The concentration of organic nitrogen in the content based on the user selected organic nitrogen species on the WaterQuality tab of the Plant Model, reported as a liquid concentration. |
| Nitrogen.Ammonia / NH3 | Calc | The Ammonia Nitrogen is the concentration of nitrogen present in aqueous ammonia (NH3(aq)) and the aqueous ammonium ion (NH4+(aq)), reported as a slurry (liquids + solids) concentration. |
| Nitrogen.Nitrite / NO2 | Calc | The Nitrite Nitrogen is the concentration of nitrogen present in the aqueous nitrite ion (NO2-(aq)), reported as a slurry (liquids + solids) concentration. |
| Nitrogen.Nitrate / NO3 | Calc | The Nitrate Nitrogen is the concentration of nitrogen present in the aqueous nitrate ion (NO3-(aq)), reported as a slurry (liquids + solids) concentration. |
| Electrical Conductivity | ||
| Conductivity | Calc | The electrical conductivity of the content. This is calculated by multiplying the Total Dissolved Solids (TDS) by a user-defined ratio which is set on the WaterQuality tab of the Plant Model. |