CN-224212540-U - Vertical magnetic cyclone precipitation combined device

CN224212540UCN 224212540 UCN224212540 UCN 224212540UCN-224212540-U

Abstract

The utility model discloses a vertical magnetic cyclone precipitation combined device which comprises a secondary precipitation tank and a cyclone separator arranged in the secondary precipitation tank, wherein the upper part of the cyclone separator is a cylindrical barrel, the lower part of the cyclone separator is of a conical structure, the bottom of the conical structure is provided with an underflow outlet, the cylindrical barrel is externally provided with a rotary magnetic system capable of generating spiral downward magnetic field force, the inner wall of the cylindrical barrel is provided with a spiral magnetic conduction piece for magnetic concentration and steady flow, a central overflow barrel is arranged in the cylindrical barrel, the top of the central overflow barrel is provided with an overflow discharge hole communicated with the secondary precipitation tank, the side surface of the cylindrical barrel is connected with a tangent mud inlet pipe, the tangent mud inlet pipe is connected with a water inlet, and the top of the secondary precipitation tank is provided with a water outlet. The utility model can be used for recovering magnetic media in magnetic coagulation sedimentation or magnetic biomembrane carriers in a magnetic biochemical system. The utility model has the characteristics of reasonable structural design, low energy consumption and wide application range, and has high separation and recovery efficiency on magnetic media and magnetic biomembrane carriers.

Inventors

XU HAOLONG
WANG CHANGZHI
ZHANG YIDAN
BAI JUNYUE
XU GUOHUA
XU LILI
WANG MINGHAO

Assignees

浙江省生态环境科学设计研究院

Dates

Publication Date: 20260508
Application Date: 20250513

Claims (10)

1. The vertical magnetic cyclone precipitation combined device is characterized by comprising a secondary precipitation tank and a cyclone separator arranged in the secondary precipitation tank; the cyclone separator has cylindrical upper part with conic structure, bottom with bottom flow outlet, rotary magnetic system comprising several layers of permanent magnets to produce spiral downward magnetic force, central overflow cylinder with overflow outlet for the secondary settling tank, tangent mud pipe connected to the side of the cylindrical cylinder and water inlet; the top of the secondary sedimentation tank is provided with a water outlet.
2. The vertical magnetic cyclone precipitation combination device according to claim 1, wherein the tangential mud inlet pipe is tangentially connected with the cylindrical barrel along an involute angle, and the cyclone direction in the cyclone separator is consistent with the rotation direction of the rotating magnetic system.
3. The vertical magnetic cyclone precipitation combined device according to claim 1, wherein an outer cylinder is arranged in the secondary precipitation tank, the rotating magnetic system is formed by a plurality of permanent magnets welded on the outer cylinder, the permanent magnets are arranged in a spiral manner downwards, the magnetic induction intensity of the permanent magnets gradually decreases from top to bottom, the outer cylinder is connected with a gear bearing and a gear motor, and the rotating speed of the rotating magnetic system is not more than 60r/min.
4. The vertical magnetic cyclone settling assembly of claim 1, wherein the overflow outlet is provided with a removable overflow cover plate.
5. The vertical magnetic cyclone precipitation assembly of claim 1, wherein the spacing between the cylindrical barrel and the rotating magnet system is less than 3mm.
6. The vertical magnetic cyclone precipitation combined device according to claim 1, wherein the secondary precipitation tank is conical, a mud valve is arranged at the bottom, and the opening of the mud valve is adjustable.
7. The vertical magnetic cyclone precipitation combination device according to claim 1, wherein an adjusting valve is arranged at the bottom flow outlet, and the opening degree of the adjusting valve is adjustable.
8. The vertical magnetic cyclone precipitation assembly of claim 1, wherein the water inlet is located at the top of the vertical magnetic cyclone precipitation assembly.
9. The vertical magnetic cyclone settling assembly of claim 1, wherein an overflow weir is provided at the top of the secondary settling tank, the overflow weir being connected to the drain outlet.
10. The vertical magnetic cyclone precipitation assembly according to claim 1, wherein the magnetic conductive member is a magnetically conductive stainless steel bar.

Description

Vertical magnetic cyclone precipitation combined device Technical Field The utility model relates to the technical field of magnetic separation water treatment, in particular to a vertical magnetic cyclone precipitation combined device which can be used for efficiently recycling magnetic media in magnetic coagulation precipitation or magnetic biomembrane carriers in a magnetic biochemical system. Background In addition, the problems of large fluctuation of inflow water quality, more refractory pollutants, lower carbon nitrogen ratio and the like of industrial and domestic mixed sewage treatment plants are generally solved, higher requirements are put forward on upgrading and improving the existing treatment process of the sewage treatment plants, so that the traditional biological denitrification and dephosphorization processes such as A 2/O and the like are difficult to achieve the stable standard of high-efficiency denitrification and dephosphorization and tail water at the same time, the magnetic coagulation high-density sedimentation tank constructed by combining the traditional coagulation sedimentation process and magnetic separation equipment can greatly accelerate the sedimentation and separation efficiency of sludge flocs, greatly reduce the occupied area of structures, improve the sedimentation volume load of sewage treatment structures, facilitate the promotion of the treatment effect of the final sedimentation tank of the sewage treatment plants, save the occupied area, promote the rapid sedimentation of the sludge flocs by adopting the magnet mineral powder as a magnetic medium in the upgrading process of the sewage treatment plants, and enable the magnetic medium in the sludge flocs to pass through a high-speed shearing machine to pass through a magnetic separator (after being recycled by a magnetic separator with the magnetic induction density of 5000-8000 g). The method is characterized in that the concentration of activated sludge and the diversity of biological flora are increased on the basis of the existing structures of the sewage treatment plant, so that the biochemical efficiency is enhanced, the quality improvement and efficiency enhancement of the sewage treatment plant are realized, the common processes comprise MBBR and a high-concentration powder carrier biological fluidized bed, and the MBBR process has the problems of small specific surface area of filler, local accumulation of filler, poor mixing state, high stirring and oxygenation energy consumption and the like; the high-concentration powder carrier biological fluidized bed is characterized in that powder carriers (diatomite, bentonite, attapulgite and the like) are put into a biochemical pond to be induced to form the biological fluidized bed which takes the powder carriers as a core and is adhered and grown by microorganisms with larger adhesion force so as to improve the diversity of biological bacterial groups, the double-mud-age process can be realized on the basis of the double-mud-process and the denitrification and dephosphorization effect can be synchronously improved, meanwhile, the powder carriers in sludge are required to be separated and recovered after mud-water separation of a secondary sedimentation tank, the powder carriers are mainly recovered through a hydrocyclone based on the density difference of powder carrier particles and biological flocs, and in the background, the hydrocyclone has low recovery efficiency of the powder carriers with low density and small particle size, and in recent years, the magnetic carriers can be rapidly and efficiently separated and recovered under the action of magnetic field force due to the good magnetic responsiveness, and the magnetic carrier biological fluidized bed process has good application potential in the quality improvement and the carbon reduction of the existing sewage treatment plants, and the development of a combined device of the magnetic biological film high-efficiency sedimentation carrier applicable to weak magnetic biological film is urgently required to be recovered. The patent specification with the publication number of CN219502981U discloses a magnetic cyclone separation device and a magnetic carrier biological fluidized bed system, which comprises a rotating magnetic system, a tangential mud inlet pipe, a vertical induction magnetic drum, a conical sedimentation tank and an overflow separation area, wherein the rotating magnetic system capable of generating downward magnetic field force is arranged at the inner side of a second cylinder, the sludge containing the magnetic carrier moves to the outer side of the second cylinder under the action of centrifugal force after passing through the second cylinder of the tangential mud inlet pipe, the magnetic carrier is subjected to the magnetic field force and the centrifugal force in opposite directions, and the magnetic carrier is subjected to the combined action of the magnetic field force, the fluid fo