Graf one2clean - Operating Notes

. OPERATING NOTES
Graf UK Ltd

7
OPERATING NOTES
Essentially, the system should only be supplied with materials that correspond to domestic wastewater in their
characteristics.
Biocides, materials with a toxic eect or materials that are not biologically compatible or degradable must not enter the
system, as these lead to biological process problems. The following, in particular, should not be introduced into the
system:
• Rainwater from roofs and courtyards,
• Extraneous water (e.g. drain water)
• Residues from livestock in solid or liquid form,
• Industrial or agricultural wastewater, as far as it is not comparable to domestic wastewater,
• Chemicals, pharmaceuticals , mineral oils, solvents,
• Cooling water,
• Coarse materials in the form of food scraps, plastics and hygiene products, face wipes, coee filter papers, bottle caps
and other household items,
• Milk and dairy products
• Drain water from swimming pools,
• Large amounts of blood.
In the case of large amounts of fats or vegetable oils, it is recommended that the fatty wastewater is pretreated in one of
the grease traps upstream of the wastewater treatment system (Caution: No faeces may be introduced into the grease
trap!).