Industrial wastewater treatment method

Abstract

The invention aims to provide an industrial wastewater treatment method. The invention adopts the following technical scheme: 1, high-salinity wastewater is fed into a reaction kettle, and subjected to steam heating, then a volatile organic compound escapes out of the top of the kettle and then enters a middle regulating tank, residual liquid is crystallized and filtered, and filter liquor returns to the reaction kettle; 2, organic macromolecules difficult to biodegrade in high-concentration wastewater are degraded by using a microelectrolysis-Fenton catalytic oxidation technology, and the obtained product is discharged to a flocculation basin and then precipitated; and 3, the obtained product is treated by using a membrane hydrolytic acidification-anaerobic baffle plate reaction tank-oxidation ditch combined process. The method disclosed by the invention has the beneficial effects that firstly, wastewater is classified, so that the pretreatment of different wastewater in different modes is facilitated, thereby improving the efficiency of treatment; secondly, a biofilm anaerobic reactor is adopted, so that the method has strong adaptability to water quantity and water quality, the amount of activated sludge is small, and the solid-liquid separation is easily performed; and thirdly, the anaerobic reactor is provided with a baffle plate, so that after wastewater enters the anaerobic reactor, the cycle-index of the wastewater can be increased, thereby speeding up the degradation rate.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a method for treating industrial wastewater. Background technique [0002] The wastewater produced in the production process of chemical enterprises contains a large amount of refractory heterocyclic organic matter and a large amount of inorganic salts. Direct discharge will inevitably lead to serious environmental pollution and threaten human health. At present, there are physical methods, chemical methods, biochemical methods, etc. for the treatment of wastewater produced by rubber accelerators, but generally factories use a unified sewage treatment system. The disadvantage of this is that the COD value and salt content of wastewater generated during the production of different products If the amount is different, if it is treated uniformly, it will cause difficulties in handling and discharge. The invention adopts classification to treat wastewater with different salinity ...

AI Technical Summary

Problems solved by technology

[0002] The wastewater generated in the production process of chemical enterprises contains a large amount of refractory heterocyclic organic matter and a large amount of inorganic salts. Direct discharge will inevitably lead to serious environmental pollution and threaten human health.

At present, there are physical methods, chemical methods, biochemical methods, etc. for the treatment of wastewater produced by rubber accelerators, but generally factories use a unified sewage treatment system. The disadvantage of this is that the COD value and salt content of wastewater generated during the production of different products If the amount is different, if it is treated uniformly, it will cause difficulties in handling, and it will be difficult to pass the discharge, etc.

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