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------------------------------------------------------------------ <br /> PART ONE - INTRODUCTION <br /> ------------------------------------------------------------------ <br /> SECTION 1 - GENERAL INFORMATION <br /> 1. 1 Source of waste <br /> The wastewaters to be treated by this <br /> system are generated by the water <br /> recycle system & anodization lines. <br /> There are two general types of waste <br /> streams. The first may be described as <br /> backwashed and regenerated wastewaters. <br /> They will normally contain some <br /> concentration of acid and caustic <br /> which comes from cation and anion beds. <br /> The second type of waste stream is <br /> composed of the various acidic baths . <br /> These are either depleted or cont- <br /> aminated to a point where they must be <br /> replaced. They are then drained to the <br /> wastewater treatment system. <br /> 1. 2 Function of system <br /> The wastewater treatment system is <br /> designed to neutralize corrosive <br /> wastewaters from the water recycle <br /> system and anodization system.The <br /> process starts when the acidic waste <br /> waters are drained into the collection <br /> lines which are routed to the waste <br /> collection tank. The wastewaters are <br /> then pumped through the wastewater <br /> treatment system where the pH is <br /> adjusted to the range between 6 . 0 - 10. 0 <br /> and discharged under permit to the City <br /> of Mainteca's water treatment system. <br />