Biochemical pharmaceutical engineering wastewater circulating purification system

The invention relates to the technical field of water treatment, in particular to a biochemical pharmaceutical engineering wastewater circulating purification system which comprises a primary filtering mechanism, a secondary filtering mechanism and a circulating purification mechanism. The adsorption filtering mechanism is connected with the primary filtering mechanism and is used for carrying out adsorption treatment on organic matters and drug residues in the wastewater subjected to primary filtering treatment; the oxidation box is connected with the adsorption filtering mechanism, and an ozone generator is arranged in the oxidation box so as to carry out ozone oxidation treatment on the wastewater subjected to adsorption treatment; and the evaporative condenser is connected with the oxidation box and is used for carrying out evaporation treatment on the wastewater subjected to oxidation treatment and collecting condensate for recycling. The primary filtering mechanism is arranged, and suspended solids and