IRRIGATION WATER TREATMENT CASE STUDY

GOLF COURSE IRRIGATION

The use of recycled water golf course irrigation requires careful monitoring and management of available recycled water quality in order to reduce risks of health hazard for humans and animals, plant injury and problems for irrigation systems.

GOLF COURSE IRRIGATION

The use of recycled water golf course irrigation requires careful monitoring and management of available recycled water quality in order to reduce risks of health hazard for humans and animals, plant injury and problems for irrigation systems.

THE PROBLEM

Westlake Golf Club, March 2017, 10,000 m3 irrigation pond receives 1.800 m3 water daily from the local sewage treatment plant causing several problems:

  • Unpleasant odors
  • Grey murky water
  • Extremely high level of bacteria

The presence of Faecal Coliforms in the irrigation reservoir is an indicator that water has been contaminated by pathogens, disease-producing bacteria or viruses, which can cause a potential health risk for humans, animals and plants exposed to this water.

Pathogenic bacteria are anaerobes and require organic matter, carbon dioxide, phosphorus, nitrogen, ammonia or sulphur to survive. Aerators on the market today and those currently deployed at Westlake are inefficient and expensive, and cannot distribute oxygen quickly and evenly throughout the entire pond.

THE PROBLEM

Westlake Golf Club, March 2017, 10,000 m3 irrigation pond receives 1.800 m3 water daily from the local sewage treatment plant causing several problems:

  • Unpleasant odors
  • Grey murky water
  • Extremely high level of bacteria

The presence of Faecal Coliforms in the irrigation reservoir is an indicator that water has been contaminated by pathogens, disease-producing bacteria or viruses, which can cause a potential health risk for humans, animals and plants exposed to this water.

Pathogenic bacteria are anaerobes and require organic matter, carbon dioxide, phosphorus, nitrogen, ammonia or sulphur to survive. Aerators on the market today and those currently deployed at Westlake are inefficient and expensive, and cannot distribute oxygen quickly and evenly throughout the entire pond.

RECOMMENDED SOLUTION

Dissolved oxygen is key, as it oxidizes anaerobic pathogens, reduces carbon dioxide in the water and encourages the growth of beneficial aerobic microorganisms.

Based on the assessment of the site and water analysis data, our team of experts recommended 60 days treatment of the pond with with our patented nanobubble technology to the Golf Club management.

The treatment objectives were:

  • Remove the unpleasant odor ASAP
  • Reduce the harmful bacteria
  • Restore the water clarity
  • Restore the natural balance of the pond

IMPLEMENTATION

Our patented technology was installed in the pond at the end of March 2017. Implementation time was less than half a day including the power supply. Installation of the MK1 machine took less than 30 minutes.

Water analysis revealed the following starting water quality level:

Faecal Coliforms: >2000 cfu

E. Coli: >2000 cfu

COD: 94 mg/L

RESULTS — IRRIGATION POND

BEFORE START

  • Strong unpleasant odor
  • Grey murky water
  • 30 cm visibility
  • No aquatic life or animals

AFTER 30 DAYS

  • Odor disappeared after 5 days
  • Water color changed
  • 1 m visibility

AFTER 60 DAYS

Faecal Coliforms < 5 cfu

E. Coli: < 5 cfu

COD: 25 mg/L

  • Visibility in water > 4 m
  • Bottom covered with air bubbles

RESULTS — COURSE GREEN

Due to the high level of dissolved oxygen and the presence of nanobubbles in the irrigation water, the course soils became increasingly aerobic and following observations were made:

 

  • Germination of rye-grass after 3 days
  • First cutting of grass after 7 days
  • Golf Green renovation completed in 7 weeks vs traditional 14 weeks
  • Extremely robust and thick turf consistency
  • No yellow spots or rot observed
  • No fertilizers used