Effluent Treatment Systems

Gee & Co not only provides a comprehensive electroplating process but has the ability to treat the effluent discharge as well.

Gee’s Solutions to Effluent Treatment Problems

The matrix below identifies typical problems areas related to electroplating effluent and indicates the Gee solution.
Contact Gee & Co for further information.

 

Process Stage Problem Chemical Solution Gee’s Solution
a) Parts Contamination. Contamination removed from the parts. This can include dirt, soil, metal oxide, grease, oil, previous metallic or organic coatings. These are generally left in the process bath where they are removed from the parts.
 b) Drag-out waste. Generally the first rinse following a process bath. This may be static or only slowly flowing and will be heavily contaminated with the preceding process acid or alkali etches, activator chemicals, plating baths, anti-corrosion chemistry. These can be alkali or acid cleaners, chemicals, sealant, organic coatings.
c) Rinse waters. Generally lightly contaminated rinses that are faster flowing than the drag out type rinses. These tend to be multiple stages and ‘counterflowed’ against the work flow. All of the above chemicals can be present, generally in much smaller concentrations.
Some ideas as to the contamination to be found in these wastes:
a) ‘Free’ oil or grease floating on the top of the cleaner bath. Reduction or oxidation chemical reactions. Oil Skimming or designed tank weir
b) Emulsified oil and grease found within the chemistry of the cleaner bath. Chemical coagulation reactions. Dosing Pumps, tanks and mixers
c) Dirt, soil and solid metallic oxides. Sludge in the bottom or in the filter on the cleaner tank. Chemical precipitation reactions. Polymer Preparation Systems. Dosing Pumps, tanks and mixers
d) Other metallic ions may be dissolved in the cleaner and held in solution. Chemical flocculation reactions. Polymer Preparation Systems. Dosing Pumps, tanks and mixers
e) pH of the drag out and rinse waters may be incorrect for discharge. Solids separation via gravity. Gee Settlement Tank
f) Toxic metals (Cu, Ni, Cr, Cd, Zn) must be removed to legislative or licensed levels. Solids separation via pressure filter. Gee Filters
g) Anions (CN-, Cr6+, PO4, SO4) may need to be required to be removed depending on local legislation/ infrastructure. Solids separation via Dissolved Air Flotation. Gee DAF
h) To remove the metals or anions shown above, other complexing agents may need to be dealt with first, such as tartrates, citrates etc. Chemical separation via ion exchange technology. Gee Ion Exchange Systems
i) Solids will need to be removed from the waste stream. Chemical separation via membrane technology. Gee Membrane Systems
j) Organic contamination may also need to be reduced. Chemical adsorption via Activated Charcoal. Gee Filters

 


Gee Core Competences
Core Competences 2

 

 

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Case Studies
Gee’s Electroplating and Metal Finishing experience is wide and varied. Follow the link below to obtain details on specific applications and case studies.

 

Each case study had its own challenges to which a Gee solution was found and instigated.

 

 

 

 

 

 

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