Reclaimed water treatment system and treatment method

The invention discloses a reclaimed water treatment system, which belongs to the technical field of reclaimed water treatment and comprises a Fenton pretreatment unit, a multi-medium filtering unit, an activated carbon adsorption unit, a heating unit, a middle water tank I, a double-membrane system, a reclaimed water storage unit, a sludge treatment system and a PLC (programmable logic controller) automatic control system, the Fenton/electro-Fenton technology is used as a pretreatment unit, the reaction is rapid and thorough, the water yield is large, the Fenton/electro-Fenton technology is applied before a double-membrane method, the content of organic pollutants in reclaimed water source water is effectively reduced, and the service life of a membrane system is further prolonged. The system provided by the invention is reasonable in process: a'double-membrane method 'process is optimized, and the universality of a reclaimed water pretreatment process section is improved; energy conservation and environmenta