Profitable Zero Discharge.

Industries achieve Zero Discharges follow Cleaner Technologies and BAT through Recovery and Recycle routes, actually make savings and profits than conventional end of pipe treatments. This is possible due to minimum wastage of costly resource materials and water, less energy through optimum pumping and heating processes, etc. Numerous case studies demonstrated the profitability by adopting Cleaner and BAT Technologies through ROI (Return of Investment) from 5 to 30 months.

Industries implementing Cleaner Technologies using BAT generate minimum wastes and zero liquid discharges through Recovery and Recycle routes actually make savings than conventional end of pipe treatments.

General approach towards Zero Discharge has not considered the total system for waste generation. They tend to give part solutions which are economically unviable. Profitable approach begins with systems level solution while improving the product quality.

BAT (Best Available Technologies) Technologies and Products from 3R TECHNOLOGY

• Counter current rinsing – reduces water consumption during rinsing up to 90%.
• Effluent Evaporators for concentrating process solutions, rinse waters, membrane rejects, heat sensitive liquids, recovery of solvents, waste heat recovery, industrial wastewaters etc.
• Membrane Filtration MF, UF, NF and RO for wastewater minimization and recycle.
• Membrane Bio Reactors [membrane filtration combined with biological process] for treatment and recycle of industrial effluents and sewage waste waters.
• Advanced oxidation using UV, Ozone, Hydrogen Peroxide, and photo catalyst for complete reaction with high molecular organic contaminants.
• Zero Discharge Systems and Package ETP and STP units integrated with above technologies.

Counter Current Rinsing

Counter Current Rinsing improves the water efficiency without compromising quality of rinsing. The introduction of several drag-out / rinse tanks arranged in series is the heart of the process. The rinse water flow opposite to the direction of the process job through series of tanks, the last tank is fed with cleanest water. The CCR Figure illustrates CCR in an Electroplating application. Airlift pumps [made out of PVC or PP] are used for rinse water transfer from tank to tank. Practical CCR have demonstrated water reduction up to 90%.

Other savings include

• Reduction of energy cost in plating shop
• Reduction of consumption of anode and plating salts
• Reduction in cost of waste water treatment
• Reduction of sludge volume.

Plating job from bath is first immersed in the Rinse Tank 1, then Rinse Tank 2 and Rinse Tank 3. The concentration level decreases exponentially from Rinse Tank 1 to Rinse Tank 3. With optimum flow of Rinse water from Rinse Tank 3 to Rinse Tank 2, then from Rinse Tank 2 to Rinse Tank 1, along with efficient agitation and spray wash techniques, the required water use will be reduced up to 90%.