Chemical copper precipitation wastewater copper removing treatment process and chemical copper precipitation wastewater copper removing treatment system
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A chemical copper precipitation and treatment system technology, applied in metallurgical wastewater treatment, flocculation/sedimentation water/sewage treatment, multi-stage water treatment, etc., can solve the problems of large amount of chemical input, poor stability, poor load impact resistance, etc., to achieve Reduce labor intensity, avoid poor stability, and reduce the effect of dosing
Active Publication Date: 2016-03-30
GUANGDONG SHUIQING ENVIRONMENTAL PROTECTION TECH CO LTD
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[0007] In view of this, one of the objects of the present invention is to provide a copper removal treatment method for chemical copper precipitation wastewater, which solves the problems of poor stability of the traditional treatment process, large amount of medicament input, and poor load impact resistance.
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Embodiment 1
[0034] Such as figure 1 As shown, a copper removal treatment system for chemical copper precipitation wastewater includes a regulating tank 1, a micro-electrolysis reaction tank 2, a pH adjusting tank 3, a flocculation tank 4, a buffer tank 5 and an MCR tank 6.
[0035] Among them, the regulating pool 1 is used to receive the electroless copper precipitation wastewater discharged from the production line, and fully adjust the water quality and quantity. In order to prevent the precipitation of pollutants in the wastewater, a third mechanical mixing device 11 is also provided inside the regulating tank 1 . A lift pump 7 is also installed at the outlet of the regulating tank 1, and the lift pump 7 is connected to the micro-electrolysis reaction tank 2 through a pipeline.
[0036] The pipeline between the lift pump 7 and the micro-electrolysis reaction tank 2 is provided with a pipeline mixer 8 for adding sulfuric acid to adjust the pH value of the waste water. control.
[003...
Embodiment 2
[0043] A method for copper removal treatment of chemical precipitation copper wastewater, using the chemical copper precipitation wastewater treatment system for copper removal as described in embodiment 1, which includes the following steps:
[0044] In step (1), the electroless copper precipitation wastewater discharged from the production line is transported to the regulating tank, so as to fully adjust the water quality and quantity, and prevent the precipitation of pollutants in the wastewater.
[0045] In step (2), sulfuric acid is added to the waste water to adjust the pH of the waste water to 3-4.
[0046] In step (3), the wastewater treated in step (2) is transported to the micro-electrolysis reaction tank, and discharged after being treated with aeration and micro-electrolysis filler. The hydraulic retention time of the micro-electrolysis reaction pool is 1-2 hours, and the reaction time between the micro-electrolysis filler and wastewater is controlled at 30-60 minu...
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Abstract
The present invention provides a chemical copper precipitation wastewater copper removing treatment system, which comprises an adjustment tank, a micro-electrolysis reaction tank, a pH value adjustment tank, a flocculation tank, a buffer tank and a MCR tank, wherein the adjustment tank, the micro-electrolysis reaction tank, the pH value adjustment tank, the flocculation tank, the buffer tank and the MCR tank are sequentially connected through pipelines. The present invention further provides a chemical copper precipitation wastewater copper removing treatment process, which comprises steps such as adjustment, acidification, micro-electrolysis reaction, neutralization, flocculation, physical sedimentation, and MCR treatment. According to the present invention, the micro-electrolysis reaction is used to replace the traditional additionally-added complexing breaking agent, the traditional additionally-added complexing breaking agent is not required, the stability and the complexing breaking effect are excellent; the MCR tank is used to replace the sedimentation tank, such that the effluent effects is extremely stable and is not affected by the water fluctuation, the poor reaction effect and other factors, and the addition of a lot of the flocculant is not required; the sludge of the MCR tank refluxes to the flocculation tank so as to reduce the addition of the flocculant and save the agent cost; and the problems of poor stability, high agent addition amount and poor load impact resistance of the conventional treatment process are avoided, the labor intensity is substantially reduced, the treatment efficiency is improved, and the actual production needs are met.
Description
technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a process for removing copper from chemical copper precipitation wastewater and a system thereof. Background technique [0002] Electroless copper plating, commonly known as copper sinking, is a self-catalyzed redox reaction. First, it is treated with an activator, so that the surface of the insulating substrate is adsorbed with a layer of active particles, usually metal palladium particles, copper ions are first reduced on these active metal palladium particles, and these reduced metal copper crystal nuclei It becomes the catalytic layer of copper ions again, so that the reduction reaction of copper continues on the surface of these new copper crystal nuclei. At present, electroless copper deposition has been widely used in the PCB manufacturing industry, followed by the generation of a large amount of electroless copper deposition wastewater. [0003] Because these w...
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