CN-224212512-U - Low-temperature reactor with stable coexistence of short-cut denitrification and anaerobic ammonia oxidation

CN224212512UCN 224212512 UCN224212512 UCN 224212512UCN-224212512-U

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a low-temperature reactor with stable coexistence of short-cut denitrification and anaerobic ammonia oxidation, which not only realizes efficient cooperation of two bacterial groups by the synergistic effect of short-cut denitrification and anaerobic ammonia oxidation through partition design and a heat preservation structure, but also precipitates and retains sludge, provides a proper growth environment for anaerobic ammonia oxidation bacterial groups and ensures that the bacterial groups are sufficient in quantity; the device comprises a low-temperature reactor, a heat exchange mechanism, a cleaning mechanism, a sedimentation mechanism and a sludge discharge mechanism, wherein the heat exchange mechanism is arranged on the low-temperature reactor and is convenient for heating water by utilizing waste heat, the cleaning mechanism is arranged on the heat exchange mechanism and is used for avoiding sludge residue blocking, the sedimentation mechanism is arranged on the low-temperature reactor and is convenient for sludge sedimentation and culture of oxyammox bacteria, and the sludge discharge mechanism is arranged on the sedimentation mechanism and is used for discharging sludge.

Inventors

YANG KAI
YU BO
LI BAOLIANG
LI YONG
JIANG YONGCHANG

Assignees

大连恺昌环境工程有限公司

Dates

Publication Date: 20260508
Application Date: 20250522

Claims (7)

1. A low-temperature reactor with stable coexistence of short-cut denitrification and anaerobic ammonia oxidation comprises a low-temperature reactor (01) and is characterized by further comprising a heat exchange mechanism (02), a cleaning mechanism (03), a precipitation mechanism (04) and a sludge discharge mechanism (05), wherein the heat exchange mechanism (02) is arranged on the low-temperature reactor (01) and is convenient for heating inflow water by waste heat, the cleaning mechanism (03) is arranged on the heat exchange mechanism (02) and is free from sludge residue blockage, the precipitation mechanism (04) is arranged on the low-temperature reactor (01) and is convenient for sludge precipitation culture of ammonia oxidation bacteria, and the sludge discharge mechanism (05) is arranged on the precipitation mechanism (04) and is used for discharging sludge.
2. The low-temperature reactor with stable coexistence of short-cut denitrification and anaerobic ammoxidation according to claim 1, wherein the low-temperature reactor (01) comprises a heat preservation shell (11), a nitrogen circulating pump (12), a porous polyethylene biological filler (13), a flow guide baffle (14) and a honeycomb ceramic carrier (15), the bottom end of the heat preservation shell (11) is connected with the ground, a cavity is arranged in the heat preservation shell (11), the nitrogen circulating pump (12) is arranged on the heat preservation shell (11), the porous polyethylene biological filler (13) is arranged in the cavity of the heat preservation shell (11), the flow guide baffle (14) is arranged in the cavity of the heat preservation shell (11), and the honeycomb ceramic carrier (15) is arranged in the cavity of the heat preservation shell (11).
3. A low temperature reactor in which short-cut denitrification and anammox coexist stably as claimed in claim 2, further comprising a heat-insulating casing (11) of a double-layer structure with a polyurethane foam layer embedded in the interlayer.
4. A short-cut denitrification and anammox stable coexisting low temperature reactor according to claim 2, wherein the heat exchanging mechanism (02) comprises a water inlet pipe (21), a heat exchanging pipe (22), a sleeve (23) and a uniform dispersion tank (24), the water inlet pipe (21) is communicated with the interior of the sewage delivery pump, the heat exchanging pipe (22) is communicated with the interior of the water inlet pipe (21) and the heat exchanging pipe (22) is spirally installed in the cavity of the heat insulating housing (11), the sleeve (23) is communicated with the interior of the heat exchanging pipe (22) and the sleeve (23) is installed at the top end of the interior of the cavity of the heat insulating housing (11), the top end of the uniform dispersion tank (24) is communicated with the bottom end of the sleeve (23), and meshes are formed on the uniform dispersion tank (24).
5. The low-temperature reactor in which short-cut denitrification and anaerobic ammonia oxidation coexist stably according to claim 4, wherein the cleaning mechanism (03) comprises a first motor (31), a first speed reducer (32), a first transmission shaft (33) and three groups of cleaning brushes (34), the bottom end of the first motor (31) is connected with the top end of the heat-preserving shell (11), the bottom end of the first speed reducer (32) is connected with the top end of the heat-preserving shell (11), the first transmission shaft (33) is rotatably arranged in the sleeve (23) and is longitudinally connected with the first speed reducer (32), and the three groups of cleaning brushes (34) are all arranged on the first transmission shaft (33).
6. A short-cut denitrification and anammox stable coexisting low temperature reactor according to claim 2, wherein the sedimentation mechanism (04) includes a sedimentation tank (41), a hinge (42), a seal cover (43), a handle (44), a drain pipe (45) and a valve (46), a top end of the sedimentation tank (41) is internally communicated with a bottom end of the heat-insulating housing (11), the hinge (42) is mounted on the sedimentation tank (41), the seal cover (43) is mounted on the hinge (42), the handle (44) is mounted on the seal cover (43), the drain pipe (45) is mounted on the sedimentation tank (41) and is internally communicated with the sedimentation tank (41), and the valve (46) is mounted on the drain pipe (45).
7. The low-temperature reactor in which short-cut denitrification and anaerobic ammonia oxidation coexist stably according to claim 6, wherein the sludge discharging mechanism (05) comprises a second motor (51), a second speed reducer (52), a second transmission shaft (53) and a helical blade (54), the second motor (51) is arranged on the sedimentation tank (41), the second speed reducer (52) is arranged on the sedimentation tank (41), the second transmission shaft (53) is rotatably arranged in the sedimentation tank (41) and is in transmission connection with the second speed reducer (52), and the helical blade (54) is arranged on the second transmission shaft (53).

Description

Low-temperature reactor with stable coexistence of short-cut denitrification and anaerobic ammonia oxidation Technical Field The utility model relates to the technical field of sewage treatment, in particular to a low-temperature reactor with stable coexistence of short-range denitrification and anaerobic ammonia oxidation. Background In the technical field of sewage treatment, in particular to a denitrification reactor suitable for a low-temperature environment (15-25 ℃), stable coexistence of short-range denitrification and anaerobic ammonia oxidation flora is realized through structural optimization, and the denitrification efficiency at low temperature is improved. The main structure of the wastewater denitrification reactor comprises a reaction tank, a filter tank and clamping plates, wherein the filter tank is arranged in the reaction tank, grooves are formed in the top and bottom sides of the filter tank, the grooves in the top of the filter tank are clamped with the bottoms of the clamping plates, one side of the clamping plates is clamped and connected to the groove wall of the filter tank, one side of the clamping plates, which is close to the reaction tank and one side of the groove wall of the filter tank, is provided with wall brushes, and when the wastewater denitrification reactor is used, a stirring shaft is arranged to rotate to drive a first stirring blade and the clamping plates in the filter tank, so that wastewater drives internal impurities to rotate in the filter tank, the filtering flow of the wastewater is accelerated, and meanwhile, the clamping plates drive the filter tank brushes to brush the filter eyes of the filter tank, so that the filter eyes are prevented from being blocked by the impurities, and the sewage flow is prevented. However, the existing reactor mostly adopts a single process or medium-temperature condition to operate, so that the synergistic effect of short-range denitrification and anaerobic ammonia oxidation is difficult to realize synchronously at low temperature, and the anaerobic ammonia oxidation flora grows slowly and easily runs off along with sludge, so that a sufficient flora is difficult to form. Disclosure of utility model In order to solve the technical problems, the utility model provides the low-temperature reactor which not only realizes the efficient cooperation of two bacterial groups by the synergistic effect of short-cut denitrification and anaerobic ammonia oxidation through a partition design and a heat preservation structure, but also precipitates and retains sludge, provides a proper growth environment for anaerobic ammonia oxidation bacterial groups and ensures stable coexistence of short-cut denitrification and anaerobic ammonia oxidation with sufficient bacterial groups. The utility model discloses a low-temperature reactor with stable coexistence of short-range denitrification and anaerobic ammonia oxidation, which comprises a low-temperature reactor, and further comprises a heat exchange mechanism, a cleaning mechanism, a precipitation mechanism and a sludge discharge mechanism, wherein the heat exchange mechanism is arranged on the low-temperature reactor and is convenient for heating inflow water by utilizing waste heat, the cleaning mechanism is arranged on the heat exchange mechanism and is used for avoiding residual blockage of sludge, the precipitation mechanism is arranged on the low-temperature reactor and is convenient for sludge precipitation culture of ammonia oxidation bacteria, the sludge discharge mechanism is arranged on the precipitation mechanism and is used for discharging sludge, the heat exchange mechanism and sewage in the low-temperature reactor exchange heat, then sewage is sprayed into the low-temperature reactor, the denitrifying bacteria on the low-temperature reactor is used for converting nitrate into nitrite, the nitrite and ammonia nitrogen in the sewage generate nitrogen under the action of the anaerobic ammonia oxidation bacteria, the sludge in the sewage is precipitated in the precipitation mechanism and is convenient for the growth and reproduction of the anaerobic ammonia oxidation bacteria, and the sludge in the precipitation mechanism is discharged after a certain time. Preferably, the low-temperature reactor comprises a heat preservation shell, a nitrogen circulating pump, porous polyethylene biological filler, a flow guide baffle and a honeycomb ceramic carrier, wherein the bottom end of the heat preservation shell is connected with the ground, a cavity is formed in the heat preservation shell, the nitrogen circulating pump is arranged on the heat preservation shell, the porous polyethylene biological filler is arranged in the cavity of the heat preservation shell, the flow guide baffle is arranged in the cavity of the heat preservation shell, the honeycomb ceramic carrier is arranged in the cavity of the heat preservation shell, the nitrogen circulating pump is started to maintain the anaerobic