CN-121651607-B - High-efficiency sewage treatment flocculation precipitation device and method thereof

CN121651607BCN 121651607 BCN121651607 BCN 121651607BCN-121651607-B

Abstract

The invention discloses a high-efficiency sewage treatment flocculation precipitation device and a method thereof, and relates to the field of sewage treatment. This high-efficient sewage treatment flocculation precipitation device, include, folded plate flocculation tank, advection sedimentation tank, unsettled sand filter of a plurality of groups and walking formula suction dredge unit, carry out flocculation work after folded plate flocculation tank lets in folded plate flocculation tank with sewage, advection sedimentation tank sets up in the play water end of folded plate flocculation tank, and shaping is pour in an organic whole to a plurality of unsettled sand filter one ends and advection sedimentation tank's inner wall, the bracing piece is installed to unsettled sand filter's the other end, and walking formula suction dredge unit activity sets up the top at the advection sedimentation tank. This high-efficient sewage treatment flocculation precipitation device, unsettled formula sand filter can not interfere the walking route of walking formula suction dredge unit, has effectively eliminated the peripheral clearance dead angle of sand filter, and walking formula suction dredge unit can follow advection sedimentation tank length direction reciprocating motion, can clear up the sediment mud of advection sedimentation tank inner bottom wall comprehensively.

Inventors

SHAO PEI
WANG XUEFEI
LI ZHUANG
WANG ZHICHAO
Tian Chengbin
SHAO ZHIYUAN
YAO DAN

Assignees

志峰（北京）环境科技集团有限公司

Dates

Publication Date: 20260508
Application Date: 20260109

Claims (7)

1. High-efficient sewage treatment flocculation precipitation device, its characterized in that includes: The folded plate flocculation tank (1) is used for flocculating sewage after the sewage is introduced into the folded plate flocculation tank (1); The advection sedimentation tank (2) is arranged at the water outlet end of the folded plate flocculation tank (1), and flocculated sewage is discharged into the advection sedimentation tank (2) for sedimentation; One end of each group of suspended sand filters (3) is integrally cast and formed with the inner wall of the advection sedimentation tank (2) and is positioned at one end far away from the folded plate flocculation tank (1), the other end of each suspended sand filter (3) is provided with a supporting rod (32), and the end part of each supporting rod (32) is fixedly arranged on the inner wall of the advection sedimentation tank (2); The walking type mud pumping unit (4) is movably arranged at the top of the advection sedimentation tank (2) and can reciprocate along the length direction of the advection sedimentation tank (2) for pumping mud deposited on the inner bottom wall of the advection sedimentation tank (2); The walking type mud pumping unit (4) comprises a walking frame (41) arranged at the top of the advection sedimentation tank (2) in a sliding manner through a sliding rail (22), a hard mud pumping pipe fitting (42) connected with the walking frame (41), a mud stirring claw group (43) for stirring mud at the bottom wall in the advection sedimentation tank (2) and an adjusting component (44) in transmission connection with the mud stirring claw group (43); The hard mud pumping pipe fitting (42) comprises a main pipe (421) connected with an external self-priming mud pump and a mud pumping pipe (422) extending into a advection sedimentation tank (2), the main pipe (421) is arranged above a travelling frame (41), two mud pumping pipes (422) are symmetrically arranged by an intermediate wall (21), the mud pumping pipes (422) are arranged in an L shape, the top ends of vertical sections of the mud pumping pipes (422) are communicated with the main pipe (421), the horizontal sections of the mud pumping pipes (422) are parallel to the inner bottom wall in the advection sedimentation tank (2), two sides of the horizontal sections of the mud pumping pipes (422) are respectively provided with a plurality of first mud pumping cylinders (423) and a plurality of second mud pumping cylinders (424), one ends of the first mud pumping cylinders (423) and the second mud pumping cylinders (424) which are far away from the mud pumping pipes (422) are obliquely downwards arranged, the outer sides of the first mud pumping cylinders (423) and the second mud pumping cylinders (424) are provided with mud pumping holes (425) which are arranged in a plurality of staggered mode; The mud stirring claw group (43) comprises a first mud stirring claw (431) fixedly installed at the bottom end of the first mud pumping barrel (423), a second mud stirring claw (432) fixedly installed at the bottom end of the second mud pumping barrel (424) and a plurality of encryption mud stirring claws (433) installed below the horizontal section of the mud pumping pipe (422), the encryption mud stirring claws (433) are positioned between the adjacent first mud stirring claws (431) and the adjacent second mud stirring claws (432), and the adjusting assembly (44) is in transmission connection with the plurality of encryption mud stirring claws (433) and used for driving the plurality of encryption mud stirring claws (433) to rotate so as to realize the switching between a vertical mud stirring operation state and a transverse storage state.
2. The efficient sewage treatment flocculation precipitation device according to claim 1, wherein overflow holes are formed in the outer side of the suspended sand filter (3), a sand layer (31) is filled in the suspended sand filter (3), a drain pipe connected with the outside is inserted in the sand layer (31), the precipitated sewage supernatant enters the suspended sand filter (3) through the overflow holes and is discharged through the drain pipe after being filtered by the sand layer (31), a stirring tank (5) is arranged at the water inlet end of the folded plate flocculation tank (1), and sewage is added with a coagulant in the stirring tank (5) for stirring and mixing, and then is introduced into the folded plate flocculation tank (1).
3. The efficient sewage treatment flocculation precipitation device according to claim 1, wherein an intermediate wall (21) is longitudinally poured in the middle of the inner wall of the advection precipitation tank (2), and sliding rails (22) are symmetrically paved at the top of the advection precipitation tank (2) along the length direction of the advection precipitation tank.
4. A high efficiency sewage treatment flocculation precipitation device according to claim 3, wherein the adjusting assembly (44) comprises an adjusting bar (441), a plurality of adjusting seats (442), a first transmission case (443) and a second transmission case (444), the adjusting seats (442) are fixedly arranged at the bottom of the horizontal section of the mud pumping pipe (422), the end parts of the encryption mud stirring claws (433) are rotatably connected with the inner wall of the adjusting seats (442), the adjusting bar (441) penetrates through the plurality of adjusting seats (442) and is in sliding connection with the inner wall of the adjusting seats (442), the first transmission case (443) and the second transmission case (444) are fixedly connected at the joints of the horizontal section and the vertical section of the mud pumping pipe (422), a protection sleeve (445) is fixedly connected between the top end of the second transmission case (444) and the lower side of the walking frame (41), a driving motor (446) is fixedly arranged above the walking frame (41), the driving motor (446) is in transmission connection with a driving rod (447), and the bottom end of the driving rod (447) penetrates through the driving rod (447) to move, and the driving rod (447) is used for moving.
5. The efficient sewage treatment flocculation precipitation device according to claim 4, wherein a plurality of groups of tooth grooves (4411) are formed below the adjusting strip (441), a quarter gear (4412) is installed at the end part of the encryption mud stirring claw (433), the quarter gear (4412) is meshed with the tooth grooves (4411), a limit groove (4413) penetrating front and back is formed in the adjusting strip (441), a limit block (4414) arranged in the limit groove (4413) in a sliding manner is fixedly installed on the inner wall of the adjusting seat (442), an inner threaded sleeve (4431) is connected to the inner wall of the first transmission case (443) in a rotating manner, a screw rod (4432) is connected to the inner wall of the inner threaded sleeve (4431) in a threaded manner, the end part of the screw rod (4432) extends outwards and is fixedly connected with the end part of the adjusting strip (4411), the other end of the inner threaded sleeve (4431) and the bottom end of the driving rod (447) are both provided with conical gears (447) in a fixed sleeve manner, and the conical gears (447) are meshed with the two conical gears (447).
6. The efficient sewage treatment flocculation precipitation device according to claim 5, wherein a driving wheel (4461) is sleeved on the outer side of the output end of the driving motor (446), driven wheels (4472) are fixedly sleeved on the top ends of the two driving rods (447) penetrating through the walking frame (41), the driving wheel (4471) is connected with the two driven wheels (4472) through a belt transmission, a protective cover is fixedly installed on the outer sides of the driving wheel (4461) and the driven wheels (4472), the protective cover is fixedly connected above the walking frame (41), and the driving motor (446) is fixedly installed on the top of the protective cover.
7. A high efficiency sewage treatment flocculation precipitation method, adopting the high efficiency sewage treatment flocculation precipitation device as claimed in any one of claims 1-6, characterized in that the method comprises the following steps: Firstly, coagulation pretreatment, namely introducing sewage to be treated into a stirring pool (5), adding a preset dose of coagulant into the stirring pool (5), and starting a stirring mechanism in the stirring pool (5) to fully mix the sewage with the coagulant to form a preliminary floc suspension; Step two, flap flocculation reaction, the floc suspension obtained in the step one is introduced into a flap flocculation tank (1), and the primary flocs are further collided and coagulated to form large-particle flocs by utilizing vortex and turbulence effect generated by flap structures in the flap flocculation tank (1); discharging the sewage after flocculation reaction into a advection sedimentation tank (2), slowly flowing the sewage along channels at two sides of an intermediate wall (21) in the advection sedimentation tank (2), gradually settling flocs to the inner bottom wall of the advection sedimentation tank (2) under the action of gravity, and realizing preliminary solid-liquid separation, wherein supernatant flows towards one end of the advection sedimentation tank (2) far away from a folded plate flocculation tank (1); Step four, deep purification of sand filtration, wherein supernatant fluid in the step three enters the suspended sand filtration tank (3) through overflow holes at the outer side of the suspended sand filtration tank (3), passes through a filled sand layer (31), and removes fine suspended particles remained in the supernatant fluid by utilizing interception and adsorption effects of the sand layer (31), and purified water is discharged through a drain pipe inserted in the sand layer (31); And fifthly, extracting and cleaning the sludge, and starting a walking type sludge extracting unit (4) and an external self-priming sludge pump to extract the sludge to a designated sludge treatment area at the same time of or after the precipitation is completed in the step three.

Description

High-efficiency sewage treatment flocculation precipitation device and method thereof Technical Field The invention relates to the field of sewage treatment, in particular to a high-efficiency sewage treatment flocculation precipitation device and a method thereof. Background In the sewage treatment process, flocculation precipitation is a key link for removing suspended impurities in sewage, and the treatment effect directly influences the quality of subsequent effluent. In order to simplify the treatment flow, shorten the sewage conveying path and reduce the occupied area of equipment, the existing flocculation precipitation device mostly adopts an integrated design of directly arranging a sand filter in a advection precipitation tank, and aims to improve the space utilization rate through compact layout, reduce head loss and reduce equipment investment and operation energy consumption. However, the integrated design causes insufficient cooperativity between sedimentation and sand filtration and sludge cleaning links of the advection sedimentation tank, which restricts the improvement of the overall treatment efficiency of the device. On one hand, the built-in installation position of the sand filter is easy to interfere with the travelling path of the travelling type mud pumping frame, so that the travelling range of the travelling type mud pumping frame is limited, a cleaning dead angle is formed on the periphery of the sand filter, deposited sludge is difficult to effectively clean, bacteria are easy to breed after long-term accumulation, and water quality is influenced; on the other hand, the mud scraping claw structure that current walking mud frame was equipped with is fixed, and is great to the disturbance of pond internal water flow in the walking mud scraping process, easily destroys the sediment balance, leads to the floc that has subsided to suspend again, reduces the sedimentation effect, and scrapes the distribution density of mud claw and can't be according to the nimble adjustment of mud deposit thickness, easily excessively disturbance water when aiming at thin mud layer, is difficult to thoroughly break up the hardening mud again when aiming at thick mud layer, and the suitability is relatively poor. Disclosure of Invention The invention aims to provide a high-efficiency sewage treatment flocculation precipitation device and a method thereof, so as to solve the problems in the background technology. In order to achieve the purpose, the invention provides the following technical scheme that the high-efficiency sewage treatment flocculation precipitation device comprises: The folded plate flocculation tank is used for flocculating sewage after the sewage is introduced into the folded plate flocculation tank; The horizontal sedimentation tank is arranged at the water outlet end of the folded plate flocculation tank, and flocculated sewage is discharged into the horizontal sedimentation tank for sedimentation; One end of each group of suspended sand filters is integrally cast with the inner wall of the advection sedimentation tank and is positioned at one end far away from the folded plate flocculation tank, the other end of each suspended sand filter is provided with a supporting rod, and the end parts of the supporting rods are fixedly arranged on the inner wall of the advection sedimentation tank; the walking type mud pumping unit is movably arranged at the top of the advection sedimentation tank, can reciprocate along the length direction of the advection sedimentation tank and is used for pumping mud deposited on the bottom wall of the advection sedimentation tank. Preferably, the overflow hole has been seted up in unsettled formula sand filter outside, just the inside of unsettled formula sand filter is filled with the sand bed, peg graft in the sand bed have the drain pipe that is connected with the external world, the inside that gets into unsettled formula sand filter through the overflow hole through the sewage supernatant of deposit to discharge through the drain pipe after the sand bed filters, the stirring pond is installed to the water inlet end of folded plate flocculation basin, and sewage is stirred in the mixing pond and is mixed the back and lets in the folded plate flocculation basin. Preferably, an intermediate wall is longitudinally poured in the middle of the inner wall of the advection sedimentation tank, and sliding rails are symmetrically paved at the top of the advection sedimentation tank along the length direction of the advection sedimentation tank. Preferably, the walking type mud pumping unit comprises a walking frame arranged at the top of the advection sedimentation tank in a sliding manner through a sliding rail, a hard mud pumping pipe fitting connected with the walking frame, a mud stirring claw group for stirring mud at the bottom wall in the advection sedimentation tank, and an adjusting component in transmission connection with the mud stirring claw gro