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Environment |
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Environment management is an area of ever-increasing importance in our business. In an effort to reduce the burden on the environment; NCL has made a major investment in waste water treatment, size and caustic recovery plants. |
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Waste Water Treatment Plant |
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o Sourced by Pollution Engineering Pakistan (Pvt). Ltd
o Capacity of 150m3/hour
o Based on the Dissolved Air Floatation System (DAF)
o Reduces Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) by 25%
o Reduces Total Suspended Solids (TSS) by 80% from the industrial effluent
The DAF system has the capability to handle variations in water quality and flow. Based on a purely physical process, the DAF system utilizes the property of micro bubble adherence to suspended solids, which increases the tendency of the solids to float. After the solids are suspended to the surface; they are skimmed into a collecting bin. The size of the bubbles greatly affects the efficacy of the flotation process, with bubbles smaller than 100µm considered the most effective. |
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Caustic Recovery Plant |
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o Sourced from GTV mbH; a German firm specializing in systems for recovery and treatment of effluent water for the textile industry.
o Capacity of 8,000 litres per hour
o Reduces waste water pollution by recovering the caustic soda through evaporation.
o Recovery of 85%
The washing liquor from the caustifying process is purified with a self cleaning pre-filter and then fed into an evaporator. The caustic soda which is re-concentrated up to the necessary concentration is available for process reuse. The distillate which is generated by evaporation can be reused in the washing process because of its perfect purity.
The system enables a maximum recovery rate of 85% to be achieved. This not only reduces the emission of pollutants in waste water; but also provides cost savings in chemical and water recovery; as well as energy savings through the recovery of hot water. |
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Size Recovery Plant |
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o Sourced by GTV mbH
o Capacity of 130m3/hour
o Recovers sizing agents from waste water
o Reduces effluent generation by 50-60%
o Decreases sizing cost by around 50% |
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