After years research and experimentation,our company has been successfully developed the Spent acidic etching solution Non-poluting treatment and copper recover based on successfully developed ammoniacal etching solution regeneration and recycling that completely resolve a major environmental pollution problem of printed circuit board industry.After the waste into system using the regulator pre-treat the acid etching waste,and make the acid etching waste into a suitable extraction system.Then adopt sophisticated multilevel extraction technology,membrane technology and suitable extractant throught extrac—strip—electrodeposit process to achieve the recovery of copper,producing the high value-added standard cathode copper which contain 99.95% copper.The waste after extracted and membrane treated has three kinds of final treatment which can be selected by the user of factory according his own condition.