A kind of processing method of epichlorohydrin waste water

Abstract

The invention relates to a treatment method of epichlorohydrin wastewater. The treatment method is characterized in that a biochemical method is used to treat the epichlorohydrin wastewater, a manner gradually increasing the concentration of COD and calcium ions in inlet water is adopted during treatment, a halotolerant bacterium is added at the same time, the halotolerant bacterium is (Paracoccus sp.) FSTB-2 which is preserved in China General Microbiological Culture Collection Center on June 1st, 2015, and the preservation number of the (Paracoccus sp.) FSTB-2 is CGMCC No. 10938. The treatment method has the advantages that the specific halotolerant bacterium is added during the treatment of the epichlorohydrin wastewater, a treatment system can tolerate high-salt and high-calcium environments, COD in the wastewater can be removed efficiently, and the method is simple in process, high in treatment efficiency, low in treatment cost and the like.

Description

technical field

[0001] The invention belongs to the technical field of environmental protection wastewater treatment, and in particular relates to a treatment method for epichlorohydrin wastewater. Background technique

[0002] Epichlorohydrin is an important intermediate in organic synthesis, mainly used in the production of fine chemical products such as epoxy resin, synthetic glycerin, and chlorohydrin rubber. The high-temperature chlorination of propylene is a classic method for the industrial production of epichlorohydrin. The sewage generated in the process has the characteristics of large water volume, high salinity, and high calcium ion concentration. It is difficult and expensive to treat alone. At present, relevant enterprises basically adopt biochemical treatment process after mixing with wastewater from other production units, but this often leads to calcium deposition in the biochemical treatment system, which causes the increase of inorganic components in activ...