Energy-saving and consumption-reducing sequencing batch active sludge treatment process and energy-saving and consumption-reducing sequencing batch active sludge treatment device

Abstract

The invention discloses an energy-saving and consumption-reducing sequencing batch active sludge treatment process and an energy-saving and consumption-reducing sequencing batch active sludge treatment device. The device comprises an SBR reactor, a dissolved oxygen DO automatic controller, a stirrer, a metal carrier bed and an aeration device, wherein the aeration device is arranged at the bottom in the SBR reactor; the metal carrier bed is mounted in an aerobic area of the SBR reactor; the metal carrier bed is composed of iron scraps after acid pickling; the iron scraps are externally covered with a wire mesh; the dissolved oxygen DO automatic controller and the stirrer are arranged at the upper side of the interior of the SBR reactor; the aeration device adopts a grinding bar for aeration. In the invention, by adopting cheap iron scraps as a metal carrier and forming a coupling process together with a sequencing bath active sludge device, an efficient and energy-saving device is provided for removing nitrogen and phosphorus and organic pollutants in water, synchronous efficient operation of partial nitrification and denitrifying phosphorus removal taking nitrite as an electron acceptor is guaranteed, the nitrogen and phosphorus removal rate is increased, the wastewater treatment efficiency is remarkably improved, and the floor area is reduced.

Description

technical field [0001] The invention relates to the technical field of domestic sewage and animal husbandry wastewater treatment, in particular to an energy-saving and consumption-reducing sequential batch activated sludge treatment process and device. Background technique [0002] Anaerobic-Anoxic-Aerobic (A 2 / O) process is widely used in urban sewage treatment because of its good nitrogen and phosphorus removal effect. However, high operating costs and high energy consumption are still a problem faced by urban sewage treatment plants. Therefore, research on new energy-saving and consumption-reducing A 2 / O process is of great significance for reducing the operating cost of sewage treatment plants. The basic principle of short-cut nitrification and denitrification biological nitrogen removal is to control the nitrification process in the nitrite stage and prevent NO 2 - further nitrification and then direct denitrification. The advantages of short-cut nitrification a...

AI Technical Summary

Problems solved by technology

[0004] In the Chinese invention patent "Integrated Energy Saving and Consumption Reduction Short-cut Nitrification Synchronous Denitrification Phosphorus Removal Coupling Process" 201010128890.6, the improved A 2 / O process, that is, the anaerobic-aerobic-aerobic-anoxic-anoxic-anoxic process has carried out short-range nitrification and simultaneous denitrification to remove phosphorus, but there are still the following shortcomings: large area, low nitrite accumulation rate High, high energy consumption, and cannot effectively remove nitrogen and phosphorus

Images