Case Study
 
The Challenge:

Hyundai Motors, a leading global automobile manufacturer, was facing acute water shortage at their automobile plant. Initially, the local authorities had committed supply of water from a nearby surface source but this subsequently dried up.  Hyundai was therefore left with the options of treating their effluent to meet their water demand, shipping water by tankers at a huge cost or closing down the car production. However, tanker supplies were inadequate, inconsistent in quality and moreover, the cost of water was over $ 2.0/m3. Due to inconsistent raw water quality it was a challenge to keep production levels up and at the same time meet environmental discharge norms.

 
The Solution:
After a detailed study of requirements, a two stream INDION Effluent Recycling plant was recommended. This consisted of :
 
  • Chlorination
  • Filtration
  • Ultra Filtration
  • Reverse Osmosis
  • One stream would work treated effluent from various operations and was used to meet process water demand when effluent is generated in sufficient quantities
  • In case the effluent generated was insufficient, the second stream would work on sewage, bought by Hyundai Motors from the local authorities.  This would ensure availability of treated water at all times.
 
 
Result:
  • Hyundai Motors recovers more than 83000 gallons per day water of TDS < 50 ppm
  • 60% of effluent is recycled and the water reused in process.
  • Compliance with environmental discharge norms by recycling waste water
 

Inlet Condition

Outlet Condition

TDS = 1100 ppm

TDS < 50 ppm

BOD = 15 ppm

Organics – Not detectable

COD = 104 ppm

Turbidity - < 0.1 NTU

Flow =  97 GPM

Flow = 58 GPM