This paper presents research work done on complex copper bearing effluents from the Serbian RTB-Bor plant. The INTREAT project, funded by the European community, addresses environmental pollution problems associated with solid and liquid wastes produced by complex sulphide ore mining and metallurgical activities. In order to offer a cost-effective and environmental friendly technology, a continuous precipitation system for selective neutralization and chemical precipitation was designed as cascade line reactor. However, since the minimum solubility for the dissolved metals occurs at different pH-values and the hydroxide precipitates are amphoteric in nature, the highest removal efficiency cannot be achieved at a single precipitation pH level, respectively in one reactor. Thermochemical analysis predicted three effective pH ranges: 4 to 4.5 (mainly iron hydroxides), 7 to 7.5 (mainly copper hydroxide/sulfate-mix), and gt 10 (mainly nickel hydroxide). For this reason, the waste water wa...s treated in multiple stages. During the testwork the influence of temperature and such pH-values on the metal removal degree was investigated in a continuous operation mode. The consumption of NaOH was monitored in dependence of its feed concentration. Obtained results show that the metal removal efficiency is very satisfactory and the recovered purified solution meets international discharge water standards.
Keywords:
Chemical precipitation / Continuous cascade line reactor / Copper / Heavy metals removal / Selective neutralization / Waste water purification
Source:
World of Metallurgy - Erzmetall, 2007, 60, 3, 155-162
TY - JOUR
AU - Stopić, Srećko
AU - Pavlović, Jelena
AU - Friedrich, Bernd
PY - 2007
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1035
AB - This paper presents research work done on complex copper bearing effluents from the Serbian RTB-Bor plant. The INTREAT project, funded by the European community, addresses environmental pollution problems associated with solid and liquid wastes produced by complex sulphide ore mining and metallurgical activities. In order to offer a cost-effective and environmental friendly technology, a continuous precipitation system for selective neutralization and chemical precipitation was designed as cascade line reactor. However, since the minimum solubility for the dissolved metals occurs at different pH-values and the hydroxide precipitates are amphoteric in nature, the highest removal efficiency cannot be achieved at a single precipitation pH level, respectively in one reactor. Thermochemical analysis predicted three effective pH ranges: 4 to 4.5 (mainly iron hydroxides), 7 to 7.5 (mainly copper hydroxide/sulfate-mix), and gt 10 (mainly nickel hydroxide). For this reason, the waste water was treated in multiple stages. During the testwork the influence of temperature and such pH-values on the metal removal degree was investigated in a continuous operation mode. The consumption of NaOH was monitored in dependence of its feed concentration. Obtained results show that the metal removal efficiency is very satisfactory and the recovered purified solution meets international discharge water standards.
T2 - World of Metallurgy - Erzmetall
T1 - Treatment of highly contaminated waste waters in a continuous cascade line reactor
EP - 162
IS - 3
SP - 155
VL - 60
UR - conv_6852
ER -
@article{
author = "Stopić, Srećko and Pavlović, Jelena and Friedrich, Bernd",
year = "2007",
abstract = "This paper presents research work done on complex copper bearing effluents from the Serbian RTB-Bor plant. The INTREAT project, funded by the European community, addresses environmental pollution problems associated with solid and liquid wastes produced by complex sulphide ore mining and metallurgical activities. In order to offer a cost-effective and environmental friendly technology, a continuous precipitation system for selective neutralization and chemical precipitation was designed as cascade line reactor. However, since the minimum solubility for the dissolved metals occurs at different pH-values and the hydroxide precipitates are amphoteric in nature, the highest removal efficiency cannot be achieved at a single precipitation pH level, respectively in one reactor. Thermochemical analysis predicted three effective pH ranges: 4 to 4.5 (mainly iron hydroxides), 7 to 7.5 (mainly copper hydroxide/sulfate-mix), and gt 10 (mainly nickel hydroxide). For this reason, the waste water was treated in multiple stages. During the testwork the influence of temperature and such pH-values on the metal removal degree was investigated in a continuous operation mode. The consumption of NaOH was monitored in dependence of its feed concentration. Obtained results show that the metal removal efficiency is very satisfactory and the recovered purified solution meets international discharge water standards.",
journal = "World of Metallurgy - Erzmetall",
title = "Treatment of highly contaminated waste waters in a continuous cascade line reactor",
pages = "162-155",
number = "3",
volume = "60",
url = "conv_6852"
}
Stopić, S., Pavlović, J.,& Friedrich, B.. (2007). Treatment of highly contaminated waste waters in a continuous cascade line reactor. in World of Metallurgy - Erzmetall, 60(3), 155-162.
conv_6852
Stopić S, Pavlović J, Friedrich B. Treatment of highly contaminated waste waters in a continuous cascade line reactor. in World of Metallurgy - Erzmetall. 2007;60(3):155-162.
conv_6852 .
Stopić, Srećko, Pavlović, Jelena, Friedrich, Bernd, "Treatment of highly contaminated waste waters in a continuous cascade line reactor" in World of Metallurgy - Erzmetall, 60, no. 3 (2007):155-162,
conv_6852 .
