Wastewater Treatment And Recovery
EKOTON Industrial Group and Esmil together with our partners have conducted much research and constructed many plants gaining vast experience in the metal industry. From bench scale studies right the way through to full scale plant operations we strive to offer BAT (Best Available Technology) using state of the art membrane separation and dewatering processes.
General Process Description
Our wastewater treatment technology for metal processing plants are based on combination of conventional pretreatment methods such as Dissolved Air Flotation and Media Filtration followed by Membrane Technologies and polishing methods as Ion Exchange, Activated Carbon or Advanced Oxidation Processes to meet the most challenging discharge requirements. The actual process stages is governed by the site requirements: to improve recovery of water, acids and metals, and to reduce off-site disposal costs by improving plant effluent quality to match ever-increasing environmental constraints.
Typical Esmil Technology Application In Metal Processing Industries
Metal processing effluents that have been treated by Esmil technology include:
- Acid Rinse Waters
- Acid Recovery
- Copper Sulphate/ Rinse Water Recovery
- Heavy Metals Removal/ Recovery
- Shipyard Effluents
Depending on the process requirements, Esmil will explore a range of technological solutions to achieve the treatment, recovery and economical requirements.
Acid And Metal Recovery
The technology is designed to optimise recovery of both residual metals and spent acid rinse waters
offering the following advantages:
- Rapid investment pay-back
- Electrolyte / Metals recovery
- Acid and rinse water recovery
- Reduced environmental liability
Using our technology based on membrane systems and ion exchange, two very different plants, including a copper rod plant and printed circuit board (PCB) manufacturer have both been able to achieve similar water recovery from spent acid rinse waters (95%) and valuable copper recovery (99%) from their effluent streams.
Heavy Metals Removal
Heavy metal removal/ recovery is particularly important in the metals industry across a range of sectors from mining tailing ponds to processing applications. Esmil and EKOTON physical-chemical treatment technologies together with membrane technology are well suited to solving the problem of heavy metals due to the high rejection efficiency by the membrane materials. This can reduce the load on current conventional treatment systems such as ion exchange or act as a standalone plug and play system to achieve the desired effluent qualities.
- Phelps Dodge Copper Rod Mill, USA (RO, NF, IEX)
- A & P Appledore, Shipyard Docks, UK
- Asarco Globe Plant, Heavy Metals Refinery, USA
- Toppan, PCB Manufacturer, San Diego
- NLMK, Metallurgic Plant, Lipetsk, RF