CN-118405779-B - Electrolytic catalytic biological denitrification reactor

CN118405779BCN 118405779 BCN118405779 BCN 118405779BCN-118405779-B

Abstract

The invention discloses an electrolytic catalytic biological denitrification reactor, which relates to the technical field of sewage treatment and comprises a reactor body and an external power supply connected with the reactor body, wherein the inner cavity of the reactor body is divided into an anaerobic reaction chamber and an aerobic reaction chamber through a first partition wall, a first drainage hole is formed in the first partition wall, a water inlet is formed in the outer side wall of the anaerobic reaction chamber, a unit cathode and a water flow propeller are fixed in the anaerobic reaction chamber, a water outlet is formed in the outer side wall of the aerobic reaction chamber, a unit anode and a water flow propeller are fixed in the aerobic reaction chamber, the unit anode and the unit cathode are connected in parallel through a wire, and the wire is connected to the external power supply. The invention is provided with the electrochemical cathode polar plate and the anode polar plate in the traditional anoxic-aerobic biodegradation reactor, can effectively improve the biological denitrification efficiency, reduce the pollution to the environment, has stronger adaptability to water quality fluctuation, has good sludge sedimentation performance, is easy to maintain and manage and operate, has high denitrification efficiency and small occupied area.

Inventors

PEI YANYAN
CHEN JINGZHEN
PAN CHUNTAO
Zou Yangchenpan

Assignees

福建工程学院

Dates

Publication Date: 20260508
Application Date: 20230428

Claims (5)

1. The electrolytic catalytic biological denitrification reactor comprises a reactor body (1) and an external power supply (9), and is characterized in that the inner cavity of the reactor body (1) is divided into an anaerobic reaction chamber (2) and an aerobic reaction chamber (3) through a first partition wall (15), a first drainage hole (12) is formed in the first partition wall (15), and water flow thrusters (11) are fixed in the anaerobic reaction chamber (2) and the aerobic reaction chamber (3); A water inlet (6) is formed in the outer side wall of the anaerobic reaction chamber (2), and a unit cathode (4) is fixed in the anaerobic reaction chamber (2); The device comprises an aerobic reaction chamber (3), wherein a water outlet (7) is formed in the outer side wall of the aerobic reaction chamber (3), a unit anode (5) is fixed in the aerobic reaction chamber (3), the unit anode (5) and the unit cathode (4) are connected in parallel through a wire, the wire is electrically connected with an external power supply (9), and an adjustable resistor (10) is electrically connected with the external power supply (9); The unit anodes (5) are composed of metals with catalytic functions, and perform oxidation reaction, wherein the oxidation reaction can promote the nitrification reaction, and the electrolysis reaction is used for electrolyzing organic matters in raw water to generate soluble CO 2 ; The number of the unit cathodes (4) is not less than two, the unit cathodes (4) are made of graphite materials, and the unit cathodes (4) perform reduction reaction to convert more nitrate and nitrite into N 2 、N 2 O, NO and discharge the N 2 、N 2 O, NO.
2. An electrolytic catalytic biological denitrification reactor according to claim 1, wherein the water inlet (6) is arranged offset to the first drainage hole (12), and the first drainage hole (12) is arranged offset to the water outlet (7).
3. The electrolytic catalytic biological denitrification reactor according to claim 1, wherein an aeration device (13) is fixedly connected to the bottom of the aerobic reaction chamber (3).
4. The electrolytic catalytic biological denitrification reactor according to claim 1, wherein the inner cavity of the aerobic reaction chamber (3) is divided into a first aerobic reaction chamber (31) and a second aerobic reaction chamber (32) by a second partition wall (16), the first aerobic reaction chamber (31) is communicated with the anaerobic reaction chamber (2) by the first drainage hole (12), the second partition wall (16) is provided with a second drainage hole (14), and the outer side wall of the second aerobic reaction chamber (32) is provided with a water outlet (7).
5. The electrolytic catalytic biological denitrification reactor according to claim 4, wherein the water inlet (6) is arranged in a staggered manner with the first drainage hole (12), the first drainage hole (12) is arranged in a staggered manner with the second drainage hole (14), and the second drainage hole (14) is arranged in a staggered manner with the water outlet (7).

Description

Electrolytic catalytic biological denitrification reactor Technical Field The invention relates to the technical field of sewage treatment, in particular to an electrolytic catalytic biological denitrification reactor. Background Because of the large discharge of industrial wastewater and town sewage, the water source is seriously polluted, and the concentration of trace organic matters in the water source with the exceeding nitric acid content often exceeds the standard, the water quality of the water source is more difficult to purify, and the water source has more lasting negative influence on human health and industrial and agricultural production. The pollution of pollutants discharged by people in life and production processes to the water quality of source water has been increasingly developed, the pollution degree of the source water is more and more serious, and the organic substances in the water are gradually increased. Meanwhile, along with the gradual improvement of water quality analysis technology, the types of trace pollutants which can be measured in water sources and drinking water are also increased continuously, and people encounter new problems in the water quality purification of the drinking water. In response to the new pollution problem occurring in the source water, research on new technologies for purifying water quality is started, and many technologies are already applied in actual production. At present, main treatment technologies of micro-polluted water sources include a physical method, a chemical method, a biological method and the like. The physical and chemical methods include adsorption method, coagulation precipitation method and membrane separation method, in which the adsorption method can only transfer micropollutants, and does not decompose and eliminate them, the coagulation precipitation method is to make colloid and fine suspended matter in water aggregate into floccule by adding coagulant, then make solid-liquid separation by precipitation, and often can introduce secondary pollution, and the membrane separation method has the defects of high cost, high energy consumption and poor selectivity. The biological method is to convert organic pollutants, acid-base salts and the like in water into inorganic CO 2、H2 O and N 2 by utilizing the metabolism of microorganisms, so as to achieve the aim of purification, but the biological treatment process is difficult to effectively run due to the fact that the organic matters, the acid-base salts and the like in the raw water are low in concentration and the influence of various uncertain factors such as the living environment of the microorganisms, and the like, so that the efficiency of a single biological treatment technology is low, the effect is poor, and the activity of the microorganisms is inhibited by refractory organic matters in the water. Therefore, how to provide an electrolytic catalytic biological denitrification reactor, which combines electrochemical electron transfer and biological oxidation-reduction to make up for the defects in the process of independently treating micro-polluted water sources by a chemical method and a biological method, is a problem to be solved by the technicians in the field. Disclosure of Invention In view of this, the present invention provides an electrolytic catalytic biological denitrification reactor for treating micro-polluted water sources by combining chemical and biological methods. In order to achieve the above purpose, the present invention adopts the following technical scheme: an electrolytic catalytic biological denitrification reactor comprises a reactor body and an external power supply connected with the reactor body, wherein the inner cavity of the reactor body is divided into an anaerobic reaction chamber and an aerobic reaction chamber by a first partition wall, a first drainage hole is formed in the first partition wall, and water flow thrusters are fixed in the anaerobic reaction chamber and the aerobic reaction chamber; A water inlet is formed in the outer side wall of the anaerobic reaction chamber; a unit cathode is fixed in the anaerobic reaction chamber; the aerobic reaction chamber is internally fixed with a unit anode, the unit anode and the unit cathode are connected in parallel through a lead, and the lead is electrically connected with an external power supply. Through the technical scheme, the electrolytic catalytic biological denitrification reactor provided by the invention is characterized in that the electrochemical cathode polar plate and the anode polar plate are respectively arranged in the traditional anoxic-aerobic biological degradation reactor, so that the biological denitrification efficiency can be effectively improved, the pollution to the environment is reduced, the adaptability to water quality fluctuation is high, the sludge sedimentation performance is good, the maintenance and the operation are easy, the denitrification efficiency