Small wastewater treatment systems

Because of their low weight, small wastewater treatment systems made of plastic can be installed without heavy equipment. This means that they can be easily transported and installed in locations that are difficult to access. Plastic wastewater tanks also have smooth inner surfaces, which makes them easy to clean. What's more, plastic tanks are 100 % waterproof.

Durable, tested quality
Our decades of experience combined with modern production techniques guarantee that our plastic tanks last for over 50 years. GRAF offers a warranty of up to 10 years for its wastewater tanks. A 2 year warranty is offered for SBR technology.

Options for a small wastewater treatment system made of plastic
+ C Carbon infeed
Solution for weekend homes. The addition of carbon as a nutrient allows the purification process to continue and prevents the biology from dying off.

+ D Removal of nitrogen
The +D package for denitrification (removal of nitrogen) results in the clarified water quality satisfying very strict requirements. The GRAF systems thereby attain a Ntotal value (total parameters of inorganic nitrogen compounds) of less than 25 mg/l.

+ P Phosphate removal package
Phosphate in water results in a massive build-up of algae. The GRAF +P package ensures the safe removal of phosphate and therefore great water quality.

+ H Hygiene package
Disinfection using the +H package satisfies even the most stringent of purity requirements for a GRAF wastewater treatment system. Without the use of chemical substances, it reliably kills off germs and microorganisms. The clarified water therefore complies with the EU Bathing Water Directive.

+ R Remote transmission
Remote monitoring allows error messages to be transmitted to mobile phones and operating data to be queried by text message. Convenient remote wastewater treatment system control by GSM is also possible. 

  • Greater efficiency
  • Greater operating reliability
  • Optimised service intervals
  • Greater customer benefit thanks to monitoring service
  • Low-cost remote diagnosis in the event of a fault without the service fitter having to come on site