The invention discloses a recycling
system and a recycling method for die-
casting waste liquid. The recycling
system is provided with a box body, wherein a vacuum filtering
system, a waste liquid centralizing
pool, a control box, a scraper system, a sterilizing system, a centrifugal filtering system, a net bag filtering system, an electric
flocculation system, a bag type filter and a
membrane filter are arranged in the box body. The recycling system has the advantages that the processes of suction, filtering, centrifuging (customizing), sterilizing, electric
flocculation,
gas mixing, recovering of
calcium and
magnetism ions, bag type filter and membrane filtering are cooperated to use, so the energy-saving and environment-protection effects are realized, and the wealth is created; by using a PLC (
programmable logic controller) to control, the high-efficiency operation of equipment is realized, the hourly treatment amount is more than fifty-thousand tons, and the
land occupation area is 40 square meters; compared with building of
sewage treatment plants, the time, labor and land are saved, the convenience is realized, the physical type is used for treating, the environment-friendly and recycling effects are realized, and the efficiency is high; the treated
wastewater can reach the standard of reused water, the equipment is recycled, the energy-saving and emission-reduction effects for oil-containing
wastewater are realized, the
wastewater is utilized, the resources are protected, and the secondary
pollution is prevented.