Treatment Study of Brook Water by Using the Ultrafiltration Pilot with Polymeric Membrane

Laurentiu Tataru,Narcis Barsan,Florin Marian Nedeff,Emilian Mosnegutu,Ioan Gabriel Sandu,Ion Sandu,Alina Cochiorca,Dana Alexandra Chitimus

doi:10.37358/mp.19.4.5296

Abstract

This work presents an experiment aimed at determining the concentration of heavy metals found in the water resources of natural receivers. Heavy metals are very dangerous both for the aquatic life environment, influencing the health of the respective living beings and for the human health especially if there is an open contact between the human and the respective water source. Due to the different technological processes of the treatment plants, the wastewater, however, contains a high concentration of heavy metals, which means that those technological processes do not fully comply with the legal requirements. A good, viable solution that is being researched more and more at present is the use of types of polymeric membranes, suitably adapted in ultrafiltration processes of wastewater. Many of today s advanced researches focus on investigating the retention of heavy metals by membranes. The purpose of this work is to determine the concentration of the main heavy metals such as Fe2+, Zn2+, Cu2+, Pb2+, Ni2+, Mn2+, etc. and other elements such as: Fluorides, Nitrites NO2-N, Phosphates PO4-P, Ammonium NH4-N etc, both before using an organic membrane of PAN from hollow fibers and after cessation of the ultrafiltration experiment to determine the % of the respective metals. can be removed after the ultrafiltration process. The results of the analyzes carried out during the experiment showed that some of the above mentioned chemical elements can be retained by more than 85 % so that a membrane of PAN can reduce the degree of pollution of the waste water, especially where the waste water is directly discharged into natural source of water. At the same time, 14 chemical elements present in the waste water were analyzed and after determining the concentration of the heavy metals after the completion of the experiment it can be confirmed that the use of polymeric membranes is and will be a viable solution for the purpose of protecting the environment and health.

Highlights

This work presents an experiment aimed at determining the concentration of heavy metals found in the water resources of natural receivers
A quite important part of the industries generates waters that have in their composition high concentrations of heavy metals, such as: chromium, nickel, cadmium, manganese, iron, lead, etc., some being retained through the purification processes of the stations designed, others bypassing them, being a threat to aquatic life as well as to human health [12-28]
The experiment that considered the retention of heavy metals in water from a natural source was carried out within a period of 240 minutes

Summary

Introduction

This work presents an experiment aimed at determining the concentration of heavy metals found in the water resources of natural receivers. 14 chemical elements present in the waste water were analyzed and after determining the concentration of the heavy metals after the completion of the experiment it can be confirmed that the use of polymeric membranes is and will be a viable solution for the purpose of protecting the environment and health. A quite important part of the industries generates waters that have in their composition high concentrations of heavy metals, such as: chromium, nickel, cadmium, manganese, iron, lead, etc., some being retained through the purification processes of the stations designed, others bypassing them, being a threat to aquatic life as well as to human health [12-28]. Some studies have shown a decrease in the rejection of heavy metals as the pH value decreases, which meant a decrease in the absorption of metal ions [35-41]

Objectives

Results

Conclusion