Purification of thermal wastewater by membrane separation and ozonation

László, Zsuzsanna and Hodúr, Cecilia (2007) Purification of thermal wastewater by membrane separation and ozonation. DESALINATION, 206 (1-3). pp. 333-340. ISSN 0011-9164

[img] Text
Restricted to Registered users only

Download (446kB) | Request a copy


The aim of our work was to find a method with which to reduce the phenol content and the high ion concentration of thermal water used to heat greenhouses. Membrane separation techniques and ozone treatment were investigated. The most powerful membrane separation method was reverse osmosis which eliminated >90% of all compounds. Another effective method was nanofiltration, which demonstrated almost 10 times greater permeability values than those for reverse osmosis, and a relatively high (40%) purification efficiency. Ultrafiltration resulted in only slight decrease in concentrations measured. Ozone alone degraded phenolic and humic compounds, but only a slow decrease in the chemical oxygen demand was observed. The effect of preozonation on nanofiltration was also investigated. It was found that (in accordance with earlier experience [1]) normalized water permeability was decreased whereas the purification efficiency of nanofiltration was increased by ozonation.

Item Type: Article
Additional Information: 5th Conference on Desalination Strategies in South Mediterranean Countries (EuroMed 2006) Location: Montpellier, FRANCE Date: MAY 21-25, 2006.
Subjects: Q Science / természettudomány > QD Chemistry / kémia
T Technology / alkalmazott, műszaki tudományok > TA Engineering (General). Civil engineering (General) / általános mérnöki tudományok
Depositing User: MTMT SWORD
Date Deposited: 05 Aug 2013 14:29
Last Modified: 05 Aug 2013 14:29

Actions (login required)

Edit Item Edit Item