A chromic acid recycling system and process for a hard chromium plating production line
A production line of chromic acid, recycling technology, applied in the direction of cells, electrolysis process, electrolysis components, etc., to achieve efficient evaporation, reduce environmental pollution, and save the cost of chemicals
Active Publication Date: 2016-06-01
WUXI XINGYI INTELLIGENT ENVIRONMENT EQUIP CO LTD
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[0004] The object of the present invention is to provide a chromic acid recycling treatment system and process in a hard chrome plating production line, which can effectively recycle the chromic acid resources in the chrome plating cleaning water and the volatilized chromic acid mist, and return them to the chrome plating tank for reuse, so that The chrome plating production line realizes zero discharge of chromic acid to solve the problems existing in the treatment of chrome plating wastewater in the prior art
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[0023] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0024] see figure 1 as shown, figure 1 It is a system block diagram of the chromic acid recycling treatment system of the hard chromium plating production line provided in Embodiment 1 of the present invention.
[0025] In this embodiment, a chromic acid recycling treatment system for a hard chromium plating production line includes several chrome plating tanks 1, and one side of the chrome plating tank 1 is sequentially provided with a four-stage recovery tank 2, a two-stage water washing tank 3 and a hot water washing tank 4. The hot water washing tank 4 is connected with a pure water automatic supply pipeline 5, and a chromium mist recovery device 6 is installed above the chrome plating tank 1, and the chromium mist recovery device 6 is connected with a spray purification tower 7, and the The s...
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The invention discloses a chromic acid recycling treatment system and a chromic acid recycling treatment process in a hard chrome plating production line. The system comprises a plurality of chrome plating tanks, wherein a recycling tank, a water washing tank and a hot water washing tank are sequentially arranged at one side of the chrome plating tanks; a chromium mist recoverer is mounted above the chrome-plating tanks and is connected with a spray purification tower which is connected with an automatic water replenishing device; and an air blower is connected with the top of the spray purification tower. The system further comprises a chromium plating assisting tank, wherein the chromium plating assisting tank is communicated with the chrome plating tanks through a chromic acid circulation pump and a pipeline and also communicated with an evaporation circulation tank through a concentrate conveying pump and the pipeline; the evaporation circulation tank is communicated with an atmospheric evaporator through an evaporator lifting pump and the pipeline; and the waste water and the water liquid in the recycling tank, the spray purification tower, the chromium mist recoverer and the atmospheric evaporator flow back into the evaporation circulation tank. When the system is used for recycling the chrome-plating cleaning water and chromic acid resources, the cost is lowered and the energy consumption is saved.
Description
technical field [0001] The invention relates to the technical field of chromic acid treatment, in particular to a chromic acid recycling treatment system and process for a hard chrome plating production line. Background technique [0002] The loss of chromic acid in the electroplating hard chrome production line mainly comes from two aspects: the discharge of chrome plating cleaning wastewater and the volatilization of chromic acid mist generated during the electroplating process. According to statistics, in the electroplating process of chromium, the actual average efficiency of electroplating is lower than 25%, that is to say, more than 75% of chromic anhydride is replaced by highly toxic Cr 6+ and a small amount of Cr 3+ The form is lost in the environment, causing great pollution to the environment. [0003] At present, domestic and foreign treatment methods for chromium pollution produced by chrome plating production lines are mainly focused on terminal treatment, tha...
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IPC IPC(8): C25D21/18C25D21/20C25D21/04C25D21/02C25D21/00C25D3/04
Inventor 匡优新
Owner WUXI XINGYI INTELLIGENT ENVIRONMENT EQUIP CO LTD