Method for strengthening short-cut nitrification reactor by embedded cathode dynamic membrane

Abstract

The invention relates to a method for strengthening a short-cut nitrification reactor by an embedded cathode dynamic membrane. The method comprises the following steps: preparing a continuous flow reactor, successfully domesticated short-cut nitrification sludge, a dynamic membrane assembly, an iron plate, an electrochemical workstation, a water inlet tank, a peristaltic pump, an aeration pump, a differential pressure gauge and a water outlet pump; installing the dynamic membrane assembly in the continuous flow reactor, adopting a stainless steel lining as a cathode in the dynamic membrane assembly, adopting the iron plate as an anode, and respectively connecting the cathode and the anode with the electrochemical workstation; arranging the aeration pump in the continuous flow reactor, and adding the short-cut nitrification sludge; enabling the continuous flow reactor to operate in a continuous water inlet mode, controlling high ammonia nitrogen load and low dissolved oxygen concentration of inlet water, performing intermittent aeration in different periods, and controlling the aeration intensity; and enhancing the operation effect of the reactor by combining an electrochemical means of controlling current and electrifying time, increasing the content of bacteria related to short-cut nitrification, and reducing the membrane pollution rate. The method is beneficial to reducing the membrane pollution rate and prolonging the membrane operation cycle.

Description

technical field [0001] The invention belongs to the technical field of wastewater biological treatment, and in particular relates to a method for strengthening a short-range nitrification reactor with a built-in cathode dynamic membrane. Background technique [0002] The traditional biological denitrification process has problems such as high construction cost, large amount of sludge production, high operating costs such as aeration and chemicals, so the new and efficient biological denitrification sewage treatment technology is currently a hot spot in research and development. As a new type of autotrophic biological denitrification technology, short-range nitrification has the advantages of small land occupation, small amount of sludge production, small amount of aeration and chemical dosage, etc., but the functional bacteria of this technology are nitrous bacteria. , the growth and reproduction are relatively slow, and the loss of sludge limits its further development and ...

AI Technical Summary

Problems solved by technology

However, cultivating short-path nitrifying bacteria in a dynamic membrane bioreactor can effectively alleviate the problem of sludge loss, but the problem of slow growth of short-path nitrifying bacteria as an autotrophic bacteria is still the key to restricting the further engineering application of this process

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