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VP Pump Series

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Composting Leachate

Composting Leachate

Composting produces a natural liquid residue or leachate which is highly polluting.

Although the leachate produced is generally recirculated into the compost, an excess or run off can be produced in high rainfall periods necessitating on site storage and then removal for off site treatment.

Composting leachate contains two contaminants which cause major pollution of rivers and groundwaters:

  • Ammonia – even very low concentrations will kill fish and other aquatic life forms.
  • Dissolved organic compounds measured as Chemical Oxygen Demand (COD) – these reduce the dissolved oxygen levels and will also destroy all aquatic organisms.

Composting Leachate

 

pH

Duration

Lethal ammonia concentration (mg/l)

Total ammonia (NH3 + NH4+)

NH3

7.0 @ 30°C

1-hour

11.6

0.093

4-days

0.74

0.006

Note: NH3 is the un-ionised form of ammonia; NH4+ is the ionised form.

Typical NH3 value for landfill leachate: 1000mg/l; (it can be considerable higher than this).

It should also be noted that the pH of rivers is generally above 7.0, the optimum stated is 7.4 which of course increases NH3 concentrations.

Fully Mobile Treatment Capability!

Viridian can now offer on-site mobile treatment plants capable of producing an effluent that can be safely discharged from site offering a considerable cost saving! We can deliver, install, commission and operate the plant on a site specific basis.

The features of the plant include:

  • Full Telemetry Package
  • Continuous Ammonia Metering
  • System Status
  • Flows
  • Pump Status
  • Temperature
  • Containerised Control Room

At Viridian Biotechnologies not only do we treat Composting Leachates, we can also treat Contaminated Surface Waters, Contaminated Groundwaters, Landfill Leachate, Industrial Effluents and Commercial Effluents. We also offer a wide range of Consultancy services.
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