Laserfiche WebLink
1.2 Metal And Electronic Parts Surface Cleanin:? <br />Site <br />2014 qpnqtj b <br />LBNL <br />152,299 <br />Raw Materials: <br />Metal parts <br />Sodium hydroxide <br />Nitric Acid <br />Hydrofluoric Acid <br />Sulfuric Acid <br />Hydrochloric Acid <br />Phosphoric Acid <br />Sodium bisulphate <br />Ammonium fluorosilicate <br />Water <br />Chromic Acid <br />Surface <br />Preparation <br />Product l <br />CWC 132 <br />Aqueous <br />solution with <br />metals <br />Treated and <br />discharged to <br />aP)TW <br />FIGURE II.1.2: METAL AND ELECTRONIC PARTS CLEANWG WASTE GENERATTON <br />PROCESS <br />This waste stream is generated as a result of metal surface cleatung opezations. Metal pants <br />are cleaned through a multi Step process including the following: <br />• Ultrasonic aqueous degreasing, <br />G Washing with commercial industrial cleaners (such as 909, B.N., Blue Gold, and <br />Mirachem 500 cleaners), <br />• Surface cleaning with acidic solutions, and <br />• DI -water and tap water rinsing. <br />The waste str <br />eam consists of wastewaters that contain particles and dissolved metals. The <br />wastewater is treated through a process that includes a series of tank treatment processes <br />before discharging into a POTW. The treatment process includes chromium reduction, <br />neutralization, coagulation, and flocculation and sand filtration. This process is authorized <br />by California Tiered Permitting program. <br />SOURCE REDUCTION/POLLUTION PREVENTION EVALUATION <br />Description of Measure: <br />No source reduction measures are planned at this time. <br />September 1, 2015 SB 14 Plan II -4 <br />