Composite physical sewage sterilizing method

Abstract

The invention discloses a composite physical sewage sterilizing method and relates to a water treatment method. The composite physical sewage sterilizing method is characterized in that treated water is sequentially subjected to electromagnetic catalytic treatment through an electromagnetic catalytic unit, electrochemical treatment through an electrochemical treatment unit and photocatalysis treatment through a photocatalytic unit. According to the composite physical sewage sterilizing method, sulfate reducing bacteria, saprophytic bacteria, iron bacteria, fungi, mould and the like in oil field injection water can be effectively killed, the sulfide content, the suspended solid content, the oil content and the polymer content are certainly degraded, water scale can be effectively removed, and new water scale is prevented from being generated; environment protection and energy conservation are realized; the composite physical sewage sterilizing method has no side effects on a water body, the stratum and the environment, the electricity consumption is extremely low, and electric energy is saved; safety and reliability are realized; a Teflon protection layer which is thick enough is applied on the surface of a Zn ionic bar, only a high-voltage electrostatic field is formed in a pipeline during running, and no current is generated, so that the personal safety cannot be threatened as no electrolytic action exists; a normal production program is not influenced, an original system pipe network structure is not damaged, an original water treatment mode is not changed, and water system functions and pipe network facilities are not damaged.

Description

technical field [0001] The invention relates to a water treatment method, in particular to a composite physical sewage sterilization method. Background technique [0002] Oilfield production often produces a large amount of sewage, which usually contains sulfate reducing bacteria, saprophytic bacteria, iron bacteria, fungi, mold, etc., and also has a certain amount of sulfide, suspended solids, oil content, polymer content, etc. Most of the current sewage treatment devices use chemical methods, which use chemicals to oxidize impurities in water and then degrade them into harmless substances. Chemical residues that may have adverse effects on water bodies and bottom layers. Contents of the invention [0003] The object of the present invention is to provide a composite physical sewage sterilization method in order to overcome the above problems. [0004] The composite physical sewage sterilization method of the present invention is that the water to be treated is subjecte...

AI Technical Summary

Problems solved by technology

[0002] Oilfield production often produces a large amount of sewage, which usually contains sulfate reducing bacteria, saprophytic bacteria, iron bacteria, fungi, mold, etc., and also has a certain amount of sulfide, suspended solids, oil content, polymer content, etc. Most of the current sewage treatment devices use chemical methods, which use chemicals to oxidize impurities in water and then degrade them into harmless substances. Chemical residues that have the potential to cause adverse effects on water bodies and bottom layers