Secondary effluent regeneration treatment system for municipal sewage treatment plant and secondary effluent regeneration treatment method of secondary effluent regeneration treatment system

Abstract

The invention discloses a secondary effluent regeneration treatment system for a municipal sewage treatment plant and a secondary effluent regeneration treatment method of the secondary effluent regeneration treatment system. The system comprises an equipment body, wherein the equipment body comprises a main reaction zone, an electrode plate is arranged in the main reaction zone and comprises a negative plate and a soluble positive plate, and the negative plate and the soluble positive plate are connected with a power supply; water outlet zones are arranged on two sides of the main reaction zone, partition boards are arranged between the main reaction zone and the water outlet zones and communicated through upper parts; a dross zone is arranged at upper parts of the main reaction zone andthe water outlet zones; an ozone aeration head is arranged at the lower part of the main reaction zone and communicated with an ozone conveying pipe; an output end of a water inlet pipe is communicated with a water outlet of the equipment body and extends into the main reaction zone; a water outlet pipe is communicated with bottom water outlets of the water outlet zones; a dross discharge pipe iscommunicated with a dross outlet of the dross zone. Secondary effluent is regenerated by use of the synergistic effect of ozonation and coagulation, an ozone floatation technology and the like, and organic matter, colloidal substances, suspended substances and other stink substances in water can be effectively removed.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and more specifically relates to a secondary effluent regeneration treatment system of an urban sewage treatment plant and a secondary effluent regeneration treatment method thereof. Background technique [0002] The secondary effluent of urban sewage treatment plants has the characteristics of stable water quality and quantity, centralized and reliable supply. If the treated secondary effluent is regenerated and reused, it can fill the huge gap in urban water shortage, alleviate the shortage of water resources in the country, reduce sewage discharge, and achieve the unity of economic and environmental benefits. [0003] Conventional methods for urban sewage regeneration include activated carbon adsorption, coagulation sedimentation filtration, and membrane separation. In terms of energy consumption, operating costs and other aspects, each method has limitations in principle and deficiencies in t...

AI Technical Summary

Problems solved by technology

Although the membrane separation method treats the effluent water quality is good, but the cost of the membrane process is high, which makes the infrastructure investment of the process reactor generally higher than other sewage treatment processes, and the sewage containing a large amount of impurities will accelerate the membrane fouling and increase the treatment cost.

[0007] The above-mentioned conventional regeneration treatment process generally has the disadvantages of huge energy consumption, high operating cost, and lack of universal applicability. It is such limitations that make most of the processes unable to be fully promoted and applied on a large scale

Images