A Quebec-based manufacturer of made-to-measure kitchen and bathroom furniture for almost 50 years, our Customer imagines and designs spaces where living is good. Its production plant includes several paint application lines and robots. The paint finishing line requires daily cleaning and rinsing, generating some 200L of wastewater. This water, once contaminated with paint residues, does not comply with current environmental standards. It was for this reason that our customer turned to NISKAE to implement an ingenious and effective solution, enabling it to discharge its process water into the municipal network.
The use of a paint applicator robot requires rinsing after use, which generates 160L of wastewater every day from paint residues. At present, an external waste contractor is required to dispose of the stored water, at a cost of CAD 1.075 per m3. Fortunately, NISKAE has come up with a solution that not only allows the water to be disposed of properly or recycled, but also offers significant financial benefits!
After our laboratory experts analyzed three samples of our customer’s process water, a tailor-made formulation was carefully developed.
The first wash water sample tested in our laboratory required dilution prior to treatment, given the large quantity of paint residue. One volume of clear water is added to one volume of waste water. A low dosage of 1.5 g/L of coagulant-flocculant reagent was required, the neutral pH value remained unchanged and the gray filtrate became translucent and clear, with sedimenting sludge that was totally dehydratable and non-sticky.
Analysis of the second sample, with a dilution of one part wastewater and three parts clear water, maintains the same observations, this time using a dosage of 5.0 g/L of custom-made flocculant reagent.
Finally, the third sample, a mixture of samples A and B, showed equally conclusive results, with pH maintained at neutral, clear filtrate and non-sticky sludge, all with a lower quantity of 2.5 g/L of reagent. This proves that a single coagulant and a single process can treat a mixture of different effluents.
With a view to discharging its wastewater in compliance or recycling it as washing water, our Customer called on NISKAE’s expertise to provide the necessary support throughout the process of acquiring its water treatment plant.
Taking into account the needs and constraints encountered, NISKAE was able to propose a SW200 treatment plant enabling the company to ensure a discharge that complies with current regulations.
The proposed installation is semi-automatic, providing treatment batches of 200L, and equipped with all the safety features required for safe industrial operation. The microstation comprises an automatic submerged lifting station and a 1000L container equipped with an agitator, ensuring intermittent agitation of the wash water to prevent any settling. The plant also includes a 500L activated carbon filter to ensure the quality of the water discharged from the plant.
Our customer did not hesitate to contact us to find a solution to his wastewater storage problem, following which a coagulating and flocculating reagent was developed, enabling his wastewater to be treated and discharged in a responsible and environmentally-friendly manner. That’s why choosing NISKAE means accessing a wide range of possibilities for unique water management, whatever the field of application.
