Large three-way valve

In aluminum processing, the Large three-way valve wastewater treatment system includes an automatic acid addition system, an automatic alkali addition system, an automatic pH detection system, and an automatic discharge system for qualified wastewater. It should also be explained here that the sodium hydroxide used between the molds is solid caustic soda, which has a high cost.

Since there is no operation process to follow, the addition of caustic soda and the discharge of the bath are arbitrary, and sometimes it is caused by the bath. The phenomenon that the concentration is oversaturated and part of the caustic soda is not dissolved. This not only caused waste, but also increased environmental pollution.　　

After the completion of the new mold room, the alkali used for cleaning the mold was changed from flake caustic soda to the liquid caustic used in the oxidation production line, which not only reduced the cost, but also was convenient to operate, with accurate dosage and no waste.　　 The mold room is built outside the oxidation workshop near the water treatment area. There are two mold washing tanks in it, and the tank liquid is sodium hydroxide solution.

When the aluminum ions in the bath exceed the standard, they are discharged to the waste alkali storage tank in the basement or neutralized by air agitation. In the original design of extrusion production, there is no design process and operating procedures for mold cleaning. It is based on experience. Because there is no requirement for process parameters, a large amount of alkali waste and environmental pollution are caused.　　Building the profile mold room near the oxidation production line, and comprehensively treat the waste water and oxidation waste water produced by it, which saves money and is conducive to environmental protection. It is an effective treatment method.

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