Manure treatment shall achieve, at least, an efficiency of removal of suspended solid, total nitrogen and total phosphorus in the solid fraction respectively of 80 %, 35 % and 70 %. Efficiency of removal in the solid fraction shall be evaluated through mass balance.

The solid fraction resulting from manure treatment shall be delivered to authorised installations for recycling with the aim of reducing odours and other emissions, improving agronomic and hygienic properties, facilitating handling and enhancing recovery of nitrogen and phosphate. The recycled product shall not be applied to agricultural land located in the region of Flanders except for parks, greeneries and private gardens.

The clarified fraction resulting from manure treatment shall be removed to storage. To qualify as treated manure, it shall have a minimum nitrogen to phosphate ratio (N/P₂O₅) of 3,3 and a minimum nitrogen concentration of 3 g per litre.

Farmers who carry out manure treatment shall submit each year to the competent authorities the data related to the amount of manure sent to treatment, the amount and the destination of the solid fraction and of the treated manure and their contents of nitrogen and phosphorus.

The competent authorities shall establish and submit to the Commission the methodologies to assess the composition of treated manure, the variations in composition and treatment efficiency for each farm benefiting from individual derogation.

Ammonia and other emissions from manure treatment shall be collected and treated so as to reduce environmental impact and nuisance.