scholarly journals Electroplating Wastewater Treatment using Halotolerant Iron-oxidizing Bacteria Acclimated to Seawater

2007 ◽  
Vol 30 (3) ◽  
pp. 155-159
Author(s):  
Osamu MIKI ◽  
Toshiaki KATO ◽  
Kimio ITO ◽  
Ikuo JITSUHARA
Keyword(s):  
Wastewater Treatment ◽  
Electroplating Wastewater ◽  
Iron Oxidizing Bacteria

A novel Fe recycling method from pickling wastewater producing a KFeS2 whisker for electroplating wastewater treatment

2021 ◽  
Author(s):  
Dongxu Liang ◽  
Manhong Ji ◽  
Suiyi Zhu ◽  
Yu Chen ◽  
Zhihua Wang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Hydrothermal Method ◽  
Facile Hydrothermal Method ◽  
Electroplating Wastewater ◽  
Pickling Sludge

Pickling sludge was converted to a novel product of KFeS2 nanorods via a facile hydrothermal method that effectively removes heavy metals from electroplating wastewater.

Electroplating wastewater treatment

2021 ◽  
pp. 50-54
Author(s):  
E. N. Kuzin ◽  
N. E. Kruchinina ◽  
T. I. Nosova
Keyword(s):  
Wastewater Treatment ◽  
Electroplating Wastewater

Research of Treatment Technology for Electroplating Wastewater

2014 ◽  
Vol 487 ◽  
pp. 713-716 ◽  
Author(s):  
Yi Dan Zhou ◽  
Miao Sun ◽  
Li Juan Wang ◽  
Guan Nan Xi
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Electrochemical Method ◽  
Chemical Process ◽  
Biological Treatment ◽  
Chemical Method ◽  
Treatment Technology ◽  
Electroplating Wastewater ◽  
The Common ◽  
Physical And Chemical

The sources and composition of electroplating waste water are summarized. The common wastewater treatment technology, such as physical and chemical method, physic-chemical process, biological treatment and electrochemical method, and so on. Then the vision for the development of electroplating wastewater treatment technology is made.

scholarly journals Upcycling of Electroplating Sludge to Prepare Erdite-Bearing Nanorods for the Adsorption of Heavy Metals from Electroplating Wastewater Effluent

Water ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1027 ◽  
Author(s):  
Yanwen Liu ◽  
Asghar Khan ◽  
Zhihua Wang ◽  
Yu Chen ◽  
Suiyi Zhu ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Effluent ◽  
Hydrothermal Route ◽  
Polyaluminum Chloride ◽  
Electroplating Wastewater ◽  
Facile Hydrothermal Route ◽  
Electroplating Sludge ◽  
Removal Efficiencies ◽  
Metallurgical Processes ◽  
Polyferric Sulfate

Electroplating sludge is a hazardous waste produced in plating and metallurgical processes which is commonly disposed of in safety landfills. In this work, electroplating sludge containing 25.6% Fe and 5.5% Co (named S1) and another containing 36.8% Fe and 7.8% Cr (S2) were recycled for the preparation of erdite-bearing particles via a facile hydrothermal route with only the addition of Na2S·9H2O. In the sludges, Fe-containing compounds were weakly crystallized and spontaneously converted to short rod-like erdite particles (SP1) in the presence of Co or long nanorod (SP2) particles with a diameter of 100 nm and length of 0.5–1.5 μm in the presence of Cr. The two products, SP1 and SP2, were applied in electroplating wastewater treatment, in which a small portion of Co in SP1 was released in wastewater, whereas Cr in SP2 was not. Adding 0.3 g/L SP2 resulted in the removal of 99.7% of Zn, 99.4% of Cu, 37.9% of Ni and 53.3% of Co in the electroplating wastewater, with residues at concentrations of 0.007, 0.003, 0.33, 0.09 and 0.002 mg/L, respectively. Thus, the treated electroplating wastewater met the discharge standard for electroplating wastewater in China. These removal efficiencies were higher than those achieved using powdered activated carbon, polyaluminum chloride, polyferric sulfate or pure Na2S·9H2O reagent. With the method, waste electroplating sludge was recycled as nanorod erdite-bearing particles which showed superior efficiency in electroplating wastewater treatment.

Solidification of Metal Finishing Slurry with Cement

1991 ◽  
Vol 24 (12) ◽  
pp. 193-200 ◽  
Author(s):  
J. R. Cláudio
Keyword(s):  
Wastewater Treatment ◽  
Soil Mechanics ◽  
Toxic Metal ◽  
Analytical Determination ◽  
Mechanical Resistance ◽  
Metallic Ions ◽  
Efficient Technology ◽  
Electroplating Wastewater ◽  
Cement Mixtures

From July, 1986 to March, 1987, the author developed laboratory, tests on cementation of electroplating wastewater treatment sludges. Perfomed at the laboratories of Escola Politécnica of the University of São Paulo and of CETESB, tests were conducted with three types of cement produced in Brazil: CPC - Portland Cement, POZ pozzolanic cement and CAF - blast furnace cement. The tests had the following steps:–characterization of electroplating industry wastewater treatment sludge and study of the sludge - cement mixtures;–preparation of sludge - cement mixtures with 3 different water/cement ratios;–measurements of mixture consistency with Casagrande soil mechanics equipment;–determination of leaching quality and resistance to compression of solidified specimen at 3 ages;–analytical determination in the sludge-cement mixture;–test for solubility in water;–analytical determination of cyanide and heavy metals in the cure water of specimen. Results showed that solidification with cement is an efficient technology for the fixation of toxic metal ions such as Cd, Hg and Pb and other metals such as Cr, Ni, Cu or Zn present in large concentrations in electroplating wastewater treatment sludges. With the only exception of Al+++ the other metallic ions determined in the leachate showed concentrations below drinking water standards. As to mechanical resistance after 90 days, the sludge - cement mixtures presented a performance similar to that of structural concrete.

The Use of a Turbulent Pipe-Flow for Rapid Flocculation of Precipitate in the Electroplating Wastewater Treatment

1991 ◽  
Vol 24 (7) ◽  
pp. 255-259 ◽  
Author(s):  
J. Kurbiel ◽  
A. Sapulak ◽  
H. Schade
Keyword(s):  
Wastewater Treatment ◽  
Pipe Flow ◽  
High Efficiency ◽  
Treatment Plant ◽  
Turbulent Pipe Flow ◽  
Operating Costs ◽  
Mixing Conditions ◽  
Metal Hydroxides ◽  
Ph Adjustment ◽  
Electroplating Wastewater

The paper presents the results of an experimental pilot study on advanced flocculation of metal hydroxides that are precipitated from electroplating wastewater during pH-adjustment. A pipe-flocculator with a turbulent flow, to ensure proper mixing conditions, was used instead of a classical flocculation tank. The results of the study indicated a high efficiency of the process. The flocculation proceeded within 50-100 seconds, which was much less than is required during classical flocculation. Application of a pipe-flocculator results also in reduction of both capital and operating costs of the wastewater treatment plant. In conclusions, important conditions, which are indispensable if pipe-flocculation is to be used, were formulated.

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