Method for treating waste water containing salt through coupling of electrodes and anaerobic organisms

Abstract

The invention provides a device for treating waste water containing salt through coupling of electrodes and anaerobic organisms, which comprises a cylindrical anaerobic reactor, the lower part of the anaerobic reactor is provided with a water distributor, the middle is provided with an anode and a cathode and connected with an external power supply through a wire, the upper part is provided with a three-phase separator, and the external is provided with a thermal insulating layer. The anode and the cathode are coaxially inserted into the 1/4 part of the effective height of the reactor, the lengths of the anode and the cathode are 50% of the effective height of the whole reactor, and externally applied voltage is optimally 1.2V. In the technology, iron-carbon electrodes are arranged in the anaerobic reactor for treating waste water containing salt with a high electricity conducting rate, the activity of anaerobic microorganisms is enhanced under the coupling action of an electric field and ferrous ion release, and the dwelling time of sludge in the reactor is prolonged, so that the metabolism speed of the microorganisms is raised, and the biomass is increased. The device is favorable to sieving efficient halophilic microorganisms, is used for treating high concentration of organic waste water containing salt, and has remarkable innovation, good effect for treating the waste water and good application prospect.

Description

technical field [0001] The invention relates to an environmental protection equipment, in particular to a water treatment environmental protection equipment. Background technique [0002] High-salinity wastewater refers to wastewater with a salt mass fraction greater than 1%, which mainly comes from petrochemical, printing and dyeing, tanning, food processing and other industries. In addition to organic matter, this type of wastewater also contains a large amount of inorganic salt ions such as Cl - , SO 4 2- , Na + , Ca 2+ Wait. The discharge of high-concentration saline wastewater is bound to cause serious harm to the water environment such as aquatic organisms, domestic drinking water, and agricultural production water. [0003] Biological method is a conventional method for treating saline organic wastewater, among which anaerobic technology is more common for the treatment of high-concentration saline wastewater. Due to its economical, efficient and harmless chara...

AI Technical Summary

Problems solved by technology

[0007] This technology uses the iron-carbon electrode under the electric field to provide the activity of anaerobic microorganisms, thereby accelerating the microbial metabolic rate and increasing the biomass, and screening out efficient halophilic mic

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