Supply of polishing filtration system for Ford wastewater treatment plant

Company : Ford Motors
Location : UK
Year : 2001
Description : Supply of polishing filtration system to Ford’s wastewater treatment plant
Goal : Reduce COD, residual oil and particulate matter
Recycling the polished effluent back to the plant as washwater
Save water and energy costs
Capacity : 500 m3/day
Water Source : Ford industrial effluent

The Problems :

  • Existing quartz-sand media filtration system clogged frequently.
  • The effluent contaminated the nearby water sources.
  • Values of COD, residual oil and particulate matter were above permitted limits for dumping into water source.

Challenges :

  • Recycling the polished effluent back to the plant as washwater.
  • Save water and energy costs.

Technical Solution :

The following processes were carried out :

  • Trials were carried out in a site pilot plant comparing AFM® to quartz sand.
  • Full scale filtration system was revamped accordingly with the following processes:
    • AFM® – Catalytic Media filtration with coagulation.
    • Final disinfection using Sodium Hypo-Chlorine.

Results :

Parameter

Required Value

Before treatment

After treatment

Turbidity (NTU)

5

50

1

COD (PPM)

50

750

30

TSS (PPM)

5

150

5

Residual Oil (PPM)

1

15

1

Water saving (%)

Minimize

0

74%

Electricity saving (%)

Minimize

0

21%

  • Following AFM® performance with the effluent polishing plant, quartz sand was replaced with AFM® at the process water inlet filtration system.
  • Three rapid gravity filters, each requiring 20 tons of quartz sand, were replaced with 18 tons of AFM® each.
  • Following the successful implementation of Dryden Aqua’s AFM® in its Essex plant, Ford Motors had decided to implement the same solution in its Paint Shop in Valencia, Spain.

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