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CN-121974535-A - Heavy metal removal method for sludge of sewage treatment plant

CN121974535ACN 121974535 ACN121974535 ACN 121974535ACN-121974535-A

Abstract

The invention discloses a method for removing heavy metals in sludge of a sewage treatment plant, and particularly relates to the field of sludge treatment equipment, comprising a treatment box, wherein a baffle is fixedly arranged on the inner wall of the middle part of the treatment box, support columns are fixedly arranged on two sides of the top of the treatment box, and a batch mechanism and a bulk mixing mechanism are arranged in the treatment box; according to the invention, the belt bearing plate is driven to move upwards by the belt pulling plate to lift up sludge, the belt bearing plate drives the sludge to move upwards to a high position, the sludge falls into the other side of the partition plate, the belt bearing plate is downwards deflected by the belt pulling plate to be sent into a sludge pile by pressing down the top of the side plate, and part of sludge and chemical medicines are mixed by upwards and downwards moving synchronously through the plurality of screw lifting rods and the plurality of transfer strips, and meanwhile, the lifting strips and the clamping plates are driven to move downwards synchronously by the same position strips, and medicines are discharged by the blanking plate through inclined areas on two sides of the lifting strips, so that the mixing effect of the sludge and the chemical medicines is uniformly corresponding, and the high-efficiency removal treatment effect of heavy metals in the sludge is ensured.

Inventors

  • LI ZHIGANG
  • ZHANG HONGBIN
  • LI JIAHUANG
  • CHEN XIAOPING

Assignees

  • 深圳市海创环境治理科技有限公司

Dates

Publication Date
20260505
Application Date
20260401

Claims (9)

  1. 1. The utility model provides a remove device of heavy metal in sewage treatment plant mud, includes treatment box (1), the middle part inner wall fixed mounting of treatment box (1) has baffle (2), the top both sides fixed mounting of treatment box (1) has support column (3), a serial communication port, the inside of treatment box (1) is provided with batcher (4) and scattered mixed mechanism (5), batcher (4) can lift up the mud out many times, scattered mixed mechanism (5) can be reciprocal stirring mud and chemical from top to bottom, improves the even effect of mixing, the top of treatment box (1) is provided with scattered mechanism (6), with scattered mechanism (6) can reciprocal input even chemical, reaches the even ratio of chemical and mud.
  2. 2. The device for removing heavy metals from sludge in a sewage treatment plant according to claim 1, wherein the batching mechanism (4) comprises a motor (41) fixedly installed at the top of the supporting column (3), a reciprocating threaded rod (42) is fixedly installed at the output end of the bottom of the motor (41), the reciprocating threaded rod (42) is vertically downwards arranged, a belt pulling plate (43) is in threaded connection with the outer wall of the reciprocating threaded rod (42), the belt pulling plate (43) is slidably installed on the outer wall of the supporting column (3), and the belt pulling plate (43) is horizontally arranged.
  3. 3. The device for removing heavy metals from sludge in a sewage treatment plant according to claim 2, wherein pull ropes (44) are fixedly arranged at the bottoms of two sides of the pull plates (43), the two pull ropes (44) are symmetrically arranged, rotating blocks (45) are fixedly arranged at the tops of the two pull ropes (44), a carrier plate (46) is rotatably arranged on the outer walls of the two rotating blocks (45) in a common mode, side plates (47) are fixedly arranged at the tops of two sides of the carrier plate (46), the two side plates (47) are arranged in a vertical mode, a rotating shaft block (48) is rotatably arranged at one side of the carrier plate (46), the rotating shaft block (48) is slidably arranged on the outer wall of the partition plate (2), a rear cover plate (49) is rotatably arranged at the top of the rotating shaft block (48), and the rear cover plate (49) is arranged in a vertical mode.
  4. 4. The device for removing heavy metals from sludge in a sewage treatment plant according to claim 3, wherein a pressing strip (410) is arranged at the top of each of the two side plates (47), the two pressing strips (410) are fixedly arranged on the belt pulling plate (43), the two pressing strips (410) are arranged in a vertical state, and the bottoms of the two pressing strips (410) are arranged in parallel with the top of each of the side plates (47).
  5. 5. The device for removing heavy metals from sludge in a sewage treatment plant according to claim 2, wherein the bulk mixing mechanism (5) comprises a transverse pushing plate (51) fixedly arranged on the outer wall of one side of the belt pulling plate (43), the transverse pushing plate (51) is horizontally arranged, a parity strip (52) is fixedly arranged on one side of the transverse pushing plate (51), a plurality of screw lifting rods (53) are rotatably arranged at the bottom of the parity strip (52), a plurality of screw lifting rods (53) are vertically arranged, and a plurality of screw lifting rods (53) are equidistantly arranged.
  6. 6. The device for removing heavy metals from sludge in a sewage treatment plant according to claim 5, wherein a plurality of transfer strips (54) are fixedly arranged on the outer walls of the bottoms of the screw lifting rods (53), the outer walls of the screw lifting rods (53) are in threaded connection with a limiting plate (55), and the limiting plate (55) is fixedly arranged on the top of the partition plate (2).
  7. 7. The device for removing heavy metals from sludge in a sewage treatment plant according to claim 5, wherein the co-dispersing mechanism (6) comprises a feed box (61) fixedly installed at the top of one side of the treatment box (1), a slot is formed in the bottom of the feed box (61), a clamping plate (62) is arranged on the inner wall of the slot, the outer wall of the clamping plate (62) is mutually attached to the slot, a blanking plate (63) is fixedly installed at the bottom of the clamping plate (62), two sides of the top of the blanking plate (63) are arranged in an inclined state, and the blanking plate (63) and the clamping plate (62) are arranged in parallel.
  8. 8. The device for removing heavy metals from sludge in a sewage treatment plant according to claim 7, wherein a lifting slat (64) is fixedly arranged at the top of the clamping plate (62), the lifting slat (64) is slidably arranged on the outer wall of the feed box (61), the lifting slat (64) is arranged in a shape like a Chinese character 'men', a squeezing plate (65) is fixedly arranged on the outer wall of the other side of the lifting slat (64), the squeezing plate (65) and the lifting slat (64) are mutually perpendicular, the top of the lifting slat (64) is mutually attached to the bottom of the parity strip (52), a reset spring (66) is fixedly arranged on the inner wall of the bottom of the squeezing plate (65), and the reset spring (66) is fixedly arranged at the top of the feed box (61).
  9. 9. A method for removing heavy metals in sludge of a sewage treatment plant, which adopts the device for removing heavy metals in sludge of a sewage treatment plant according to any one of claims 1 to 8, and is characterized by comprising the following steps: The motor (41) drives the reciprocating threaded rod (42) to rotate so that the belt pulling plate (43) moves up and down in a reciprocating way, when the belt pulling plate (43) moves up, the pulling ropes (44) on two sides are pulled to drive the rotating blocks (45) to lift the bearing plate (46), and the bearing plate (46) drives the side plates (47) to deflect upwards through the rotating shaft blocks (48) to lift sludge; Step two, after the carrier plate (46) drives the sludge to move up to a high position, the inclined carrier plate (46) drives the sludge to pass through the top of the partition board (2), and then the rear cover plate (49) is extruded to turn backwards, so that the sludge falls into the other side of the partition board (2); Step three, the transverse pushing plate (51) is driven to synchronously move by the movement of the pull plate (43), the parity strip (52) and the plurality of screw lifting rods (53) are driven to synchronously move up and down by the transverse pushing plate (51), the plurality of screw lifting rods (53) drive the plurality of transfer strips (54) to synchronously move up and down, and when the plurality of screw lifting rods (53) pass through the limiting plate (55), the limiting plate (55) extrudes and drives the plurality of screw lifting rods (53) and the plurality of transfer strips (54) to synchronously rotate, namely the plurality of transfer strips (54) reciprocate up and down to synchronously rotate; Step four, when the belt pulling plate (43) moves downwards, the pressing bar (410) is driven to press down the top of the side plate (47) so that the bearing plate (46) deflects downwards and is sent into the sludge pile, and the sludge is conveniently lifted up next time; Step five, discharging chemical medicines in the feed box (61) through grooves, and loading medicines in inclined areas on two sides of the top of the feed plate (63) when the feed plate (63) and the clamping plate (62) move downwards in the feed box (61); Step six, the parity strips (52) move downwards to extrude the extruding plate (65) to move downwards synchronously, the extruding plate (65) drives the pulling and lifting plate (64) and the clamping plate (62) to move downwards synchronously, and the reset spring (66) is compressed, at the moment, after the blanking plate (63) stretches out of the bottom of the feed box (61), medicines are discharged through inclined areas on two sides, and meanwhile, the clamping plate (62) blocks a slot of the feed box (61).

Description

Heavy metal removal method for sludge of sewage treatment plant Technical Field The invention relates to the technical field of sludge treatment equipment, in particular to a method for removing heavy metals in sludge of a sewage treatment plant. Background Sludge generated during urban life and urban municipal facilities related to urban life activities in operation and maintenance processes. According to the source, the sludge can be divided into sewage plant sludge, water supply plant sludge, drainage pipeline sludge, dredging sludge, building sludge and the like. The sludge with different sources has very different properties, the corresponding treatment technical requirements and the resource utilization ways are different, and the sludge also contains a large amount of heavy metals. Heavy metals in sludge of a traditional sewage treatment plant are removed by adding some chemical medicaments to precipitate the heavy metals so as to achieve the aim of treatment, but the sludge in the prior art is accumulated together in a concentrated way during treatment, and most of the sludge cannot be kept timely and effectively when being mixed with the chemical medicaments due to the lack of a structure capable of being uniformly treated in batches, and is unevenly mixed; Meanwhile, the prior art lacks a matched treatment structure for chemical medicaments and sludge, namely the mixing effect of the sludge and the chemical medicaments cannot be uniformly corresponding, so that the high-efficiency removal treatment effect of heavy metals in the sludge cannot be ensured. In view of the technical drawbacks described above, a solution is now provided. Disclosure of Invention The invention provides a method for removing heavy metals in sludge of a sewage treatment plant, which aims to solve the technical problems that the sludge in the prior art cannot be kept timely and effectively when being mixed with chemical medicines and is unevenly mixed. The device comprises a treatment box, wherein a partition plate is fixedly arranged on the inner wall of the middle part of the treatment box, supporting columns are fixedly arranged on two sides of the top of the treatment box, a batch mechanism and a bulk mixing mechanism are arranged in the treatment box, the batch mechanism can lift and send out sludge for many times in batches, the bulk mixing mechanism can stir the sludge and chemical medicine up and down in a reciprocating manner, the mixing uniformity effect is improved, the top of the treatment box is provided with a co-dispersing mechanism, and the co-dispersing mechanism can throw in uniform chemical medicine in a reciprocating manner, so that the uniform proportion of the chemical medicine and the sludge is achieved. In a preferred embodiment, the batch mechanism comprises a motor fixedly mounted at the top of the support column, a reciprocating threaded rod is fixedly mounted at the bottom output end of the motor, the reciprocating threaded rod is vertically downwards arranged, the outer wall of the reciprocating threaded rod is in threaded connection with a belt pulling plate, the belt pulling plate is slidably mounted on the outer wall of the support column, and the belt pulling plate is horizontally arranged. In a preferred embodiment, the two sides bottom of taking the arm-tie is fixed mounting and is drawn the red and green and take the rope, two draw the red and green and take the rope and be mutual symmetry setting, two draw the top fixed mounting of red and green and take the rope and have the commentaries on classics piece, two the outer wall of commentaries on classics piece rotates jointly and installs the bearing plate, the bearing plate is the level setting, the both sides top fixed mounting of bearing plate has the curb plate, two the curb plate is the vertical setting, one side rotation of bearing plate installs the pivot piece, pivot piece slidable mounting is at the outer wall of baffle, the top rotation of pivot piece is installed the back shroud, the back shroud is the vertical setting. In a preferred embodiment, the tops of the two side plates are provided with pressing strips, the two pressing strips are fixedly arranged on the belt pulling plate, the two pressing strips are arranged in a vertical state, and the bottoms of the two pressing strips are arranged in parallel with the tops of the side plates. In a preferred embodiment, the bulk mixing mechanism comprises a transverse pushing plate fixedly mounted on the outer wall of one side of the pull plate, the transverse pushing plate is arranged in a horizontal state, a parity strip is fixedly mounted on one side of the transverse pushing plate, a plurality of screw thread lifting rods are rotatably mounted at the bottom of the parity strip, the screw thread lifting rods are arranged in a vertical state, and the screw thread lifting rods are arranged in an equidistant mode. In a preferred embodiment, a plurality of turning strips are fixedly