CN-121974484-A - Sewage treatment system

CN121974484ACN 121974484 ACN121974484 ACN 121974484ACN-121974484-A

Abstract

The invention relates to the technical field of rural domestic sewage treatment, in particular to a sewage treatment system. The device comprises an aeration tank, wherein a sliding part is arranged at the upper end of the aeration tank, a plurality of defoaming and slag blocking components are arranged at the lower end of the sliding part, each defoaming and slag blocking component comprises an upper conical block fixed at the lower end of the sliding part, an upper conical ring is arranged on the outer edge of each upper conical block in an embedded and rotated mode, bristles are fixed on the outer edge of each upper conical ring, a lower conical block is concentrically arranged below each upper conical block, the upper ends of the upper conical blocks are fixedly connected with the lower ends of the lower conical blocks through a plurality of fixing rods, a lower conical ring is arranged on the outer edge of each lower conical block in an embedded and rotated mode, a stirring and conveying component is arranged at the lower end of each upper conical block, and vortex elastic sheets are arranged on the outer sides of the lower conical rings. The system actively sucks bubbles and scum on the sewage liquid level through the stirring and conveying assembly, and conveys the bubbles and scum to the vortex storage tank, wherein the bubbles are broken in the vortex storage tank, and liquid flows back to the aeration tank through the filter screen, so that the bubbles are prevented from covering the sewage surface, and the air is ensured to be in direct contact with sewage.

Inventors

LU WEINA
WU HUAIJING
LI YA
ZHANG BONAN
LI FENG
CHEN XINLIN
ZHANG SHUJUN
LI XIN
ZHU YONGXING
XU FANG
LI NA
CHENG MING

Assignees

河南农业职业学院
河南中之能生态环境技术研究院

Dates

Publication Date: 20260505
Application Date: 20260129

Claims (9)

1. The sewage treatment system comprises an aeration tank (1), wherein a sliding piece capable of sliding along the length direction of the aeration tank (1) is arranged at the upper end of the aeration tank (1), and the sewage treatment system is characterized in that a plurality of defoaming and slag blocking components are arranged at the lower end of the sliding piece; the defoaming slag blocking component comprises an upper conical block (4) fixed at the lower end of a sliding piece, the upper end of the upper conical block (4) is large, the lower end of the upper conical block is small, an upper conical ring (19) is arranged on the outer edge of the upper conical block (4) in an embedded and rotated mode, an upper driving component capable of driving the upper conical ring (19) to rotate is arranged in the upper conical block (4), bristles are fixed on the outer edge of the upper conical ring (19), a lower conical block (6) is concentrically arranged below the upper conical block (4), the upper end of the lower conical block (6) is small, the lower end of the upper conical block (4) is large, the upper end of the upper conical block (4) is fixedly connected with the lower end of the lower conical block (6) through a plurality of fixing rods (5), an inner hole (27) is formed in the lower conical block (6), a lower driving component capable of driving the lower conical ring (15) to rotate is arranged in the lower conical block (6), the lower end of the upper conical block (19) is fixedly provided with a stirring conveying component, the stirring conveying component penetrates through the inner hole (27), the outer side of the lower conical ring (15) is provided with a vortex (7) and comprises a narrow vortex section (72) on the upper side and a vortex section (72), a gap is formed between a narrow section (72) of a vortex spring piece (7) and the outer edge of a lower conical ring (15), a wide section (71) of the vortex spring piece (7) is in contact with the outer edge of the lower conical ring (15), a vortex storage tank is formed between the wide section (71) of the vortex spring piece (7) and the outer edge of the lower conical ring (15), a baffle (51) is fixed at the lower end of one fixing rod (5), the baffle (51) is used for plugging the lower port of the vortex storage tank, a first sliding rod (10) which is vertically arranged is fixed at the lower end of the wide section (71) of the vortex spring piece (7), the first sliding rod (10) is in sliding connection with an upper conical block (4), a driving unit which can drive the first sliding rod (10) to lift is arranged on the upper conical block (4), a vertical second sliding rod (11) is fixed at the upper end of the narrow section (72) of the vortex spring piece (7), a plurality of through holes (8) are formed in the wide section (71) of the vortex spring piece (7) which is in sliding connection with the upper conical ring, a filter screen (9) is internally fixed in the through holes (8), and the first sliding rod (10) can be attached to the outer side of the vortex spring piece (19).
2. The sewage treatment system according to claim 1, wherein the sliding member comprises a transverse plate (3), electric control sliding rails (2) are fixed on two sides of the upper end of the aeration tank (1), sliding parts of the electric control sliding rails (2) are fixedly connected with the transverse plate (3), and the defoaming and slag blocking assembly is fixed at the lower end of the transverse plate (3).
3. A sewage treatment system according to claim 1, wherein the upper driving assembly comprises a second toothed ring (20) fixed on the inner side of the upper conical ring (19), the second toothed ring (20) is rotatably arranged in an annular groove on the outer side of the upper conical block (4), a third motor (22) is fixed in the upper conical block (4), a third gear (21) is concentrically fixed on an output shaft of the third motor (22), and the third gear (21) is meshed with the second toothed ring (20).
4. A sewage treatment system according to claim 1, wherein the lower driving assembly comprises a first toothed ring (16) fixed on the inner side of the lower conical ring (15), the first toothed ring (16) is rotatably arranged in an annular groove on the outer side of the lower conical block (6), a second motor (18) is fixed in the lower conical block (6), a second gear (17) is concentrically fixed on an output shaft of the second motor (18), and the second gear (17) is meshed with the first toothed ring (16).
5. A sewage treatment system according to claim 1, wherein the conicity of the upper cone block (4), the lower cone block (6), the upper cone ring (19) and the lower cone ring (15) are equal.
6. A sewage treatment system according to claim 1, wherein the driving unit comprises a rack (12) fixed on the first slide bar (10), the rack (12) is vertically arranged, a first motor (14) is fixed in the upper conical block (4), a first gear (13) is concentrically fixed on an output shaft of the first motor (14), and the first gear (13) is meshed with the first rack (12).
7. The sewage treatment system according to claim 1, wherein a vertically arranged stepped hole (112) is formed in the upper conical table, the stepped hole (112) is large in upper portion and small in lower portion, a sliding block (111) is slidably arranged in a large hole of the stepped hole (112), and the upper end of the second sliding rod (11) penetrates through a small hole of the stepped hole (112) and is fixedly connected with the sliding block (111).
8. A sewage treatment system according to claim 1, wherein an aeration pipe (26) is fixed in the lower end of the aeration tank (1).
9. A sewage treatment system according to claim 1, wherein the stirring and conveying assembly comprises a fourth motor (23) concentrically fixed in the lower end of the upper conical block (4), a stirring rod (24) is concentrically fixed on the output shaft of the fourth motor (23), the stirring rod (24) penetrates through the inner hole (27), a spiral fan blade (25) is fixed on the stirring rod (24) in the inner hole (27), and a plurality of stirring blades (28) are fixed on the stirring rod (24) on the lower side of the lower conical block (6).

Description

Sewage treatment system Technical Field The invention relates to the technical field of rural domestic sewage treatment, in particular to a sewage treatment system. Background Rural human settlement environment is a core task of rural construction. The domestic sewage treatment is a key link for improving the ecological environment of the village, and particularly has irreplaceable effects in water resource protection, sanitary condition improvement and ecological livability target realization. The traditional rural domestic sewage treatment usually adopts an activated sludge process, and a core aeration tank of the traditional rural domestic sewage treatment promotes microorganism degradation of pollutants by injecting air into sewage, but the traditional rural domestic sewage treatment faces significant challenges in actual operation. A large amount of viscous foam and organic scum generated in the sewage aeration process can continuously cover the sewage liquid level to form a physical isolation layer. This not only prevents the effective transfer of oxygen to the water body and reduces the microbial metabolism efficiency, but also causes uneven distribution of dissolved oxygen concentration and seriously affects the treatment efficiency. More notably, in rural areas with large population density fluctuation, seasonal changes of sewage components are remarkable (such as rapid increase of holiday detergent concentration), foam accumulation is particularly remarkable, and the traditional manual salvage mode is low in efficiency and high in operation and maintenance cost. The partial aeration tank foam removing equipment mostly adopts a fixed mechanical slag scraping structure, the coverage range of the partial aeration tank foam removing equipment is limited, and the dynamic response to the change of a foam generating area is difficult. Rural sewage treatment sites are often distributed and dispersed, the operation and maintenance forces are weak, the failure rate can be aggravated due to insufficient adaptability of equipment to complex water quality fluctuation, and the linkage problems of equipment blockage, aeration head scaling and the like are caused due to incomplete scum removal, so that the system is stopped. This is in sharp contradiction with the "low cost, easy maintenance, sustainable" rural infrastructure construction principle. Meanwhile, the foam which cannot be removed in time carries a large amount of undegraded organic matters and pathogenic microorganisms, and the foam can pollute surrounding soil and crops after being diffused along with wind, so that ecological safety of villages is threatened. If nutrient substances such as nitrogen, phosphorus and the like enriched in the foam are directly crushed and refluxed, the processing load is increased, and the recycling recovery window is missed. The problems are common problems for restricting the stable operation and long-acting service of rural sewage treatment facilities. In the stage of switching from engineering construction to fine management in rural construction, an aeration system with intelligent defoaming, dynamic deslagging and self-cleaning capabilities needs to be developed so as to break through the limitation of the traditional process and support the sustainable development of rural water environment treatment. Disclosure of Invention The invention mainly aims to provide a sewage treatment system capable of effectively defoaming and intercepting scum in the process of aerating sewage. The defoaming and scum interception components in the system are convenient to clean. In order to achieve the above purpose, the technical scheme provided by the invention is as follows: The sewage treatment system comprises an aeration tank, wherein a sliding piece capable of sliding along the length direction of the aeration tank is arranged at the upper end of the aeration tank, and a plurality of defoaming and slag blocking assemblies are arranged at the lower end of the sliding piece; the defoaming slag blocking component comprises an upper conical block fixed at the lower end of the sliding piece, the upper end of the upper conical block is big, the lower end of the upper conical block is small, an upper conical ring is arranged at the outer edge of the upper conical block in an embedded and rotating manner, an upper driving component capable of driving the upper conical ring to rotate is arranged in the upper conical block, bristles are fixed at the outer edge of the upper conical ring, a lower conical block is concentrically arranged below the upper conical block, the upper end of the lower conical block is small, the lower end of the upper conical block is big, the upper end of the upper conical block is fixedly connected with the lower end of the lower conical block through a plurality of fixing rods, an inner hole is formed in the lower conical block, a lower conical ring is arranged at the outer edge of the lower conical block in