akvoTool™: RO Pre-Treatment Process Design — beta version

akvoTool™ is a process design tool for RO pre-treatment. This tool allows you to select the best pre-treatment train and calculates the effluent quality that this will deliver. It will also assess the suitability of this quality as RO-feed and offer an estimation of its yearly operating costs and environmental footprint. The tool is specialized in surface water.

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Step 2. Enter Flowsheet Number:



Alternatives:

Step 3. Enter feed water information

Pretreatment feed [m3/h] Temperature [ºC] pH TOC [mg/l] TSS [mg/l] Turbidity [NTU] Salinity [ppm]

Step 4. Process Train Configuration:

Beach well pump


well depth [m]   pressure out [bar]   pump eff. [%]   motor eff. [%]  

Step 4. Process Train Configuration:

Cartridge filter


pressure loss [bar]

Step 4. Process Train Configuration:

Intake pump


pit depth [m] pressure out [bar] pump eff. [%] motor eff. [%]

Step 4. Process Train Configuration:

Media filter (1st Stage)


anthracite
porosity grain size [mm] bed depth [m] sand
porosity grain size [mm] bed depth [m] filtration rate [m/h] recovery [%]

Step 4. Process Train Configuration:

Media filter (2nd Stage)


anthracite
porosity grain size [mm] bed depth [m] sand
porosity grain size [mm] bed depth [m] filtration rate [m/h] recovery [%]

Step 4. Process Train Configuration:

Transfer pump


pressure out [bar] pump eff. [%] motor eff. [%]

Step 4. Process Train Configuration:

Transfer pump


pump eff. [%] motor eff. [%]

Step 4. Process Train Configuration:

Strainer


pressure loss [bar] recovery [%]

Step 4. Process Train Configuration:

Polymeric membrane filtration (UF)


filtration flux [l/m2/h] recovery [%] backwash [l/m2/h] backwash pump eff. [%] backwash motor eff. [%]

Step 4. Process Train Configuration:

Acid mixer


(H2SO4)

dosing acid mass fraction target pH required acid flow [kg/h]

Step 4. Process Train Configuration:

Coagulant mixer


(FeCl3)

dosing ferric mass fraction target ferric concentration [ppm] coagulant flow [kg/h]

Step 4. Process Train Configuration:

Flocculator



impeller motor eff. [%] res. time stage 1 [s] res. time stage 2 [s] res. time stage 3 [s]

Step 4. Process Train Configuration:

Settler


collision const. G number [1/s] break-up const. [s]

Step 4. Process Train Configuration:

Sedimentation basin


collision const. G number [1/s]
break-up const. [s]

Step 4. Process Train Configuration:

Dissolved Air Flotation


saturator [bar] recycle rate [%] loading rate [m/h]

Step 4. Process Train Configuration:

akvoFloat™ flotation-filtration process


           
Filtration flux [l/m2/h] Recovery [%] Backwash [l/m2/h] Backwash pump eff. [%] Backwash motor eff. [%]

Step 5. Simulation Results (RO feed)

Pre-treatment feed [m3/h] Pre-treatment effluent / RO feed [m3/h] Recovery [%] Waste Stream [m3/h] Pressure [bar] Temperature [ºC] pH TOC [mg/l] TSS [mg/l] Turbidity [NTU] Salinity [ppm] Fe Conc. [mg/l] Spec. Energy [kWh/m3]

Step 6. Basic Economic Assessment

Plant availability [%] H2SO4 price [$/t] FeCl3 price [$/t] Labour [$/hr] Electricity price [$/kWh] Waste stream disposal [$/t] Yearly Opex [$/yr] Yearly Yield (RO Feed) [m3/yr] Specific Opex [$/m3]

Basic Carbon Footprint

Please select the power source:

[kg CO2eq/m3]

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