An apparatus for analysis and reusing waste liquid, the waste liquid being wastewater, comprising: at least one analysis equipment configured to enable analysis of the waste liquid; a clean water tank (6.1) in which clean water is transferred and stored; at least one clean water feeding line configured to transfer and fill clean water into the clean water tank (6.1); at least one waste liquid feeding line configured to feed waste liquid into the system; a waste liquid tank (6.2) adapted to intake analysed waste liquid transferred from the analysis equipment via waste liquid feeding line, and adapted to dilute said waste liquid; said waste liquid tank (6.2) further comprising an agitator; an agitator drive mechanism configured to drive the agitator; a discharge valve at the bottom of the waste liquid tank (6.2) configured to enable discharging of the diluted liquid; a transfer valve (6.3) configured to connect the clean water tank (6.1) with the waste liquid tank (6.2) for transferring clean water from the clean water tank (6.1) to the waste liquid tank (6.2); the analysis equipment comprising at least a receiver system (4.2) and a transmitter system (4.1), the receiver system (4.2) comprising at least a receiver probe (4.2.1) and the transmitter system (4.1) comprising at least a transmitter probe (4.1.1), the probes being located inside the water flow and the waste liquid feeding line on the point the water flow flows into the waste liquid tank (6.2); the analysis equipment being adapted to determine the particle density of the waste liquid during passage to the waste liquid tank (6.2); at least one PLC control panel comprising a PLC control system configured to enable receiving data from the analysis equipment; a system processor configured to process the data received; an analysis equipment cleaning line configured to enable keeping the analysis equipment operative; at least one automatic water cleaning line pump configured to generate pressurized water; wherein the analysis equipment cleaning line is operatively connected via the pump to the analysis equipment which connects to the PLC control system; the waste liquid is transferred to the waste liquid tank (6.2) after solid materials have been analysed; and the analysis equipment cleaning line is configured to transfer pressurized water to the analysis equipment in order to clean the analysis equipment when the analysis of the said waste liquid is performed. at least one analysis equipment configured to enable analysis of the waste liquid; a clean water tank (6.1) in which clean water is transferred and stored; at least one clean water feeding line configured to transfer and fill clean water into the clean water tank (6.1); at least one waste liquid feeding line configured to feed waste liquid into the system; a waste liquid tank (6.2) adapted to intake analysed waste liquid transferred from the analysis equipment via waste liquid feeding line, and adapted to dilute said waste liquid; said waste liquid tank (6.2) further comprising an agitator; an agitator drive mechanism configured to drive the agitator; a discharge valve at the bottom of the waste liquid tank (6.2) configured to enable discharging of the diluted liquid; a transfer valve (6.3) configured to connect the clean water tank (6.1) with the waste liquid tank (6.2) for transferring clean water from the clean water tank (6.1) to the waste liquid tank (6.2); the analysis equipment comprising at least a receiver system (4.2) and a transmitter system (4.1), the receiver system (4.2) comprising at least a receiver probe (4.2.1) and the transmitter system (4.1) comprising at least a transmitter probe (4.1.1), the probes being located inside the water flow and the waste liquid feeding line on the point the water flow flows into the waste liquid tank (6.2); the analysis equipment being adapted to determine the particle density of the waste liquid during passage to the waste liquid tank (6.2); at least one PLC control panel comprising a PLC control system configured to enable receiving data from the analysis equipment; a system processor configured to process the data received; an analysis equipment cleaning line configured to enable keeping the analysis equipment operative; at least one automatic water cleaning line pump configured to generate pressurized water; wherein the analysis equipment cleaning line is operatively connected via the pump to the analysis equipment which connects to the PLC control system; the waste liquid is transferred to the waste liquid tank (6.2) after solid materials have been analysed; and the analysis equipment cleaning line is configured to transfer pressurized water to the analysis equipment in order to clean the analysis equipment when the analysis of the said waste liquid is performed.