WOG: Waste Water Treatment/Recycle of Textile Effluent

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Renowned textile mills manufacture different types of textile products in their factory located in Pakistan. The manufacturing process generates a large quantity of wastewater (5500 m3/day, COD 3500mg/l).

WOG conducted a detailed survey of wastewater generation and water consumption in the manufacturing facilities & Evaluated possibilities of elimination of chemical use in the wastewater treatment plant

WOG evaluated options of Recycling 92.75% of wastewater Back to process for Treatment (5100 m3/day).

WOG targeted on below points:

  • Elimination of the use of ACID for pH adjustment from pH 11.5 to 7.
  • Flue gas from the power plant. Flue gas injection system developed to dissolve CO2 present in flue gas into wastewater. By this means a reduction of pH adjustment is done from 11.5 to 7.0.
  • Completely elimination of the use of the chemical in the primary treatment section
  • An advanced Membrane Based Biological system is installed to produce superior quality treated water.
  • To meet water quality to recycle in the process – Two-Stage RO system installed.
  • No pre-treatment before RO, as water quality from MBR is superior.
  • An energy recovery system is provided to optimize energy consumption.

RESULT OF TREATMENT PROVIDED BY WOG

  • Biologically treated effluent COD remains less than 100ppm and BOD remains < 5ppm.
  • COD Removal efficiency across MBR is 95%+

 

To know more, please check WOG Group.

 

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