Harwin

Harwin

In 2011, Harwin, a specialist connector manufacturer based in Portsmouth, contacted Puretech Environmental to assess their existing effluent operations.

The Challenge

The effluent is generated from the plating on connectors with elements such as Nickel, Tin, Gold and Silver with all their associated pre-treatment. At the time, Harwin was using 10m3/h of water and the trade effluent agreement was to be reviewed.

Puretech Solution

 

Recycling system on Ion exchange resin

Recycling on Ion exchange resin

Because it precipitates at low pH and would eventually clog a conventional recycling system, Puretech Env. developed a solution for the selective removal of tin. The core process of the implemented solution is a recycling system based on macroporous ion exchange resin operating at 10m3/h. The resulting effluent is treated in a batch reactor which offers supreme control over the discharge as each batch is analysed before release is authorised.

Coupled with a re-arrangement of the rinse structures and an adequate stream segregation, Harwin is now discharging only 10m3 per week as opposed to 10m3 per hour and has enjoyed a 100% compliance with the new trade effluent agreement.

"Puretech Environmental have carried out numerous installation projects at our Washington Campus, each project was carried out to the highest standard. Their attention to detail along with their attitude towards Health and Safety makes them world class in their industry."

Carl Liddle | Rolls-Royce - Manufacturing services
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Pollution

THE PURETECH DIFFERENCE...:
... by the range of industrial pollutions we can address : pH, heavy metals, cyanides, hexavalent chromium, BOD, "Hard" COD, Fat Oil & Grease, suspended solids, sulphates, phosphorous, nitrates, Ammonia, and anything you can think of to challenge us.

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Technologies

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... by picking the right technology for the right problem to provide the client with a guarantee of performance. Here are some of the processes we cover : Coagulation, Neutralisation, Flocculation, Oxidation, Reduction, Flotation, Settlement, Filter press, Screw press, Centrifuge, Ion exchange resin, Membranes technologies etc.

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Case studies

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