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REMOVAL OF HARDNESS IN WASTEWATER EFFLUENT USING MEMBRANE FILTRATION Cover

REMOVAL OF HARDNESS IN WASTEWATER EFFLUENT USING MEMBRANE FILTRATION

Architecture, Civil Engineering, Environment
Volume 12 (2019): Issue 2 (June 2019)
By: Mariusz DUDZIAK and  Edyta KUDLEK  
Open Access
|Aug 2019

Figures & Tables

Figure 1.

The installation TMI 14 (1 – water coat, 2 – manometer, 3 – thermometer, 4 – flowmeter, 5 – regulating valves, 6 – high-pressure pump, 7 – control box with inverter, 8 – tank, 9 – drain from the tank, 10 – membrane module, 11 – permeate outlet)
The installation TMI 14 (1 – water coat, 2 – manometer, 3 – thermometer, 4 – flowmeter, 5 – regulating valves, 6 – high-pressure pump, 7 – control box with inverter, 8 – tank, 9 – drain from the tank, 10 – membrane module, 11 – permeate outlet)

Figure 2.

Effect of transmembrane pressure on volumetric permeate flux of the membrane: a) nanofiltration, b) reverse osmosis
Effect of transmembrane pressure on volumetric permeate flux of the membrane: a) nanofiltration, b) reverse osmosis

Figure 3.

Change of volumetric permeate flux of membrane during deionized water and wastewater filtration: a) nanofiltration, b) reverse osmosis
Change of volumetric permeate flux of membrane during deionized water and wastewater filtration: a) nanofiltration, b) reverse osmosis

Figure 4.

Relative permeability of membranes α
Relative permeability of membranes α

Figure 5.

The level of hardness of wastewater in permeate during membrane filtration
The level of hardness of wastewater in permeate during membrane filtration

The physico-chemical characteristics of effluent from wastewater treatment plant

IndicatorUnitValue
pH-7.41
ColormgPt/L90.00
TurbidityNTU0.86
Conductivity μS/cm1031.20
Absorbance in UV254 1/cm0.234
Total hardnessmgCaCO3/L358.00

Efficiency of membrane filtration (averaged permeate)

ProcessColor[mgPt/L]Turbidity[NTU]Conductivity[μS/cm]Absorbance in UV254[1/cm]
Nanofiltration00380.200
Reverse osmosis00157.700

Characteristics of the membranes (manufacturer data)

ProcessMembrane symbolMembrane chemistryMolecular weight cut-off (MWCO) [Da]Max operating pressure [MPa]pH rangeMax temperature [ºC]Salt retention coefficient [%]
NanofiltrationAFC-30composite2006.01.5-9.56075.0 CaCl2
Reverse osmosisAFC-80-1.5-10.57080.0 NaCl
DOI: https://doi.org/10.21307/acee-2019-030 | Journal eISSN: 2720-6947 | Journal ISSN: 1899-0142
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Language: English
Page range: 141 - 147
Submitted on: Apr 15, 2019
Accepted on: May 9, 2019
Published on: Aug 6, 2019
Published by: Silesian University of Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
Effluent from wastewater treatment plant,
Hardness of wastewater,
Membrane filtration.
Related subjects:
Architecture and design,
Architecture,
Architects, buildings

© 2019 Mariusz DUDZIAK, Edyta KUDLEK, published by Silesian University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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