Method for purifying reclaimed water subjected to electroplating combined waste water treatment
A comprehensive technology of wastewater treatment and electroplating, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of huge cost, low stability, cost consumption of electroplating enterprises, etc. , to achieve the effect of improving efficiency and reducing consumption
Inactive Publication Date: 2014-01-15
TIANJIN LVJINGYUAN ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology
[0002] The electroplating industry has been widely used in electronics, aerospace, automobile manufacturing, machinery manufacturing, daily necessities and other industries, but because the electroplating industry uses a large amount of strong acid, strong alkali, heavy metal solutions, and even toxic and harmful chemicals, in the process During the process, waste water, waste gas and waste residue that pollute the environment and endanger human health are discharged, and it has become a heavily polluting industry. The treated waste water can not be reused even if it meets the standard of reclaimed water, which brings a lot of cost consumption to electroplating enterprises. At present, there are many methods of reclaimed water reuse, but most of them are costly and not stable
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Embodiment 1
[0010] The implementation example is as attached figure 1 Shown: a reclaimed water purification device after electroplating comprehensive wastewater treatment, characterized in that the device is collected by a reclaimed water collection tank 1, a biochemical processor 2, a macroporous mixed anion and yang resin tower 3, an RO membrane system 5 and pure water Box 4, the reclaimed water in the reclaimed water collection tank 1 is denitrified by the biochemical processor 2 to reduce the COD of the reclaimed water, and then enters the RO membrane treatment system 5 after passing through the macroporous mixed anion and yang resin tower 3 to absorb organic matter and heavy metal ions The desalted pure water returns to the pure water collection tank 4 and can be reused in the electroplating production line.
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The invention provides a method for purifying reclaimed water subjected to electroplating combined waste water treatment. The method is characterized in that the reclaimed water subjected to the electroplating combined waste water treatment still contains certain organic pollutants, ammonia nitrogen and heavy metal ions which possibly exceed the standard. According to the method, after the denitrification treatment is carried out through a biochemical treatment process, the COD (Chemical Oxygen Demand) of the reclaimed water is reduced; the organics and the heavy metal ions are absorbed by utilizing macroporous yin and yang mixed resin, and then the desalted pure water which enters an RO (Reverse Osmosis) membrane treatment system can be recycled to an electroplating production line. The method provided by the invention can be used for purifying and recycling the reclaimed water subjected to the electroplating waste water treatment, thereby greatly reducing the consumption of the water resources of electroplating enterprises and increasing the benefit of the enterprises.
Description
technical field [0001] The invention relates to a wastewater treatment method, in particular to a method for purifying reclaimed water after comprehensive electroplating wastewater treatment. Background technique [0002] The electroplating industry has been widely used in electronics, aerospace, automobile manufacturing, machinery manufacturing, daily necessities and other industries, but because the electroplating industry uses a large amount of strong acid, strong alkali, heavy metal solutions, and even toxic and harmful chemicals, in the process During the process, waste water, waste gas and waste residue that pollute the environment and endanger human health are discharged, and it has become a heavily polluting industry. The treated waste water can not be reused even if it meets the standard of reclaimed water, which brings great cost consumption to electroplating enterprises. At present, there are many methods of reclaimed water reuse, but most of them are costly and n...
Claims
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IPC IPC(8): C02F9/14
CPCY02A20/131
Inventor 徐雷利
Owner TIANJIN LVJINGYUAN ENVIRONMENTAL PROTECTION TECH