GSP-Project Ltd's patented technologies of wastewater treatment provides a cost-effective and flexible management of the biological treatment process in the aerotank,  based on controlling the ratio between different microorganisms within the biocenosis of active sludge, as well as reducing capital costs for equipment. The basic idea of the technology is to ensure reliable operation of the biological treatment system of the aeration tank, to ensure the stability and effectiveness of biological wastewater treatment from organic substances, nitrogen and phosphorus compounds, and to reduce the cost of wastewater treatment.