CN113149161A - High-flux rotating disc sewage magnetic separation device and separation method - Google Patents
High-flux rotating disc sewage magnetic separation device and separation method Download PDFInfo
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/481—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a high-flux rotating disc sewage magnetic separation device and a separation method. The automatic control system comprises a magnetic material detector, a control cabinet and a PC. The automatic control system controls the water pump at the feeding port, the mixing knife and the magnetic disc to work, the mixing knife uniformly mixes materials fed into the box groove, and the magnetic disc uninterruptedly separates the magnetic materials and discharges the materials through the scraper. The device organically combines a magnetic field and mechanical force, is applied to the efficient separation of magnetic particles, has simple process and convenient operation when being used for waste water or ore pulp, simultaneously has lower energy consumption, can continuously process the feed, and meets the requirement of industrial production.
Description
Technical Field
The invention discloses a high-flux rotating disc sewage magnetic separation device, belongs to the field of water treatment, and mainly relates to purification of solid suspended matters, organic matters and heavy metal ions.
Background
With the rapid development of China, national policies attach great importance to the problem of civil security. In recent years, the degree of importance of sewage treatment in China is continuously improved, as of 2012, the number of 1670 sewage treatment plants built in China is greatly increased compared with 427 sewage treatment plants in 2000, and as of 2012, the sewage treatment capacity of the sewage treatment plants in China is 1.17 hundred million tons, and the sewage treatment rate is increased from 34% in 2000 to 87%. In 2013, the dispersive sewage treatment facility of China reaches 1706, the sewage treatment plant reaches 3926 and the industrial sewage treatment facility 492. By 2015, urban sewage treatment plants in China are increased to 6 and 910 seats, and daily treatment capacity of urban sewage is increased to 1.87 hundred million tons, so that the urban sewage treatment plant becomes one of the countries with the highest global sewage treatment capacity. Various data show that China pays attention to the construction of sewage treatment facilities, the sewage treatment facilities become important contents of the total pollutant amount control work, and meanwhile, the construction of the sewage treatment facilities becomes a main control means for sewage treatment of urban domestic sewage and industrial production.
The problem of high-efficiency solid-liquid separation is inevitably faced in the water treatment process, and the traditional solid-liquid separation technology mainly focuses on the aspects of filtration, filter pressing, gravity settling and the like. First, in the filtration technology, a disc filter is basically used industrially, solid and liquid are separated by vacuum to form a filter cake, and the filtrate is recycled, but the effect of dewatering viscous materials is poor. The sedimentation technology has wide application range and can be seen in mineral processing plants and water plants, such as various sedimentation tanks, clarification tanks, concentration tanks and the like. The settling process and the equipment used are relatively simple, making gravity settling the least expensive of the various solid-liquid separation techniques. Some materials which are difficult to filter can be effectively separated by means of a sedimentation method, but the separation efficiency is low, the occupied area is large, and the treatment effect on ultrafine particles is not ideal. The drying and separating technology is mainly used for concentrate dehydration in cold regions to prevent freezing. The screening separation technology is mainly applied to the dehydration of large materials. Although the traditional solid-liquid separation technology plays an important role in the development of the industrial and mining industries of various countries in the world, the development of the times requires that the more advanced and accurate solid-liquid separation technology is applied to modern industrial and mining enterprises and even family life.
The water treatment solid suspended substance has the characteristics of low solid content, fine granularity, low specific gravity and the like, and the traditional solid-liquid separation is difficult to achieve the ideal effect. The magnetic separation technology is a physical separation method for separating different magnetic substances by means of the action of magnetic field force. The magnetic separation technology is an old and mature technology, and is applied to mineral separation and porcelain clay industry for the earliest time. In 1845, the U.S. issued a patent for a commercial magnetic separator. The magnetic separation technology is widely applied to the fields of ore concentration, coal desulfurization, iron removal of glass, cement and the like, purification of kaolin, cell separation in bioengineering, catalyst recovery in petrochemical industry and the like as a means for separating two or more substances with magnetic differences. The magnetic separation technology is used for water treatment engineering, and can be called as an emerging technology. From the 60 s of the last century, the soviet union treated the dust removal wastewater of steel mills by magnetic coagulation, at the end of the 60 s, the high gradient magnetic filter of the commander of crom in MIT of the united states, and the wastewater of steel, food, chemical industry, paper making and the like by magnetic flocculation and high gradient magnetic separation in the united states in the 70 s. In 1974 sweden began treating steel rolling wastewater by the disk method, followed by the development of a disk type "two-second separator" in japan in 75 years. In China, from the middle of the 70 s to the early of the 80 s, a magnetic coagulation method, a magnetic disc method and a high-gradient magnetic separation method are used for treating steel-making and steel-rolling wastewater. In recent years, magnetic separation technology has achieved certain research results in the treatment aspects of electroplating wastewater, phenol-containing wastewater, lake water, food fermentation wastewater, municipal wastewater, steel wastewater, kitchen wastewater, slaughter wastewater, petroleum produced water and the like, and some of the magnetic separation technology has been well applied to actual wastewater treatment.
The magnetic separation equipment mainly comprises two types of HGMS and disc type magnetic separators. HGMS is characterized by high gradient, and ReMagdiscTM in the magnetic disc separator is characterized by high field intensity, and has been developed. The superconducting magnetic separator has the characteristics of both, but the practical application is not mature. Since Kolm et al succeeded in developing the 1 st high-gradient magnetic separation experimental device at the end of the 60's in the 20 th century, the development of high-gradient magnetic separators has been rapidly developed. At present, various high-gradient magnetic separators have been developed at home and abroad, such as Sala type high-gradient magnetic separator, VMS type high-gradient magnetic separator, Jones-like SHP series wet-type strong magnetic separator, Slon type pulsating high-gradient vertical ring magnetic separator, SSS-II double-frequency pulse double-vertical ring high-gradient magnetic separator and DMG type vertical ring pulsating high-gradient magnetic separator, which are all electromagnetic systems, so that the high-gradient magnetic separator has the advantages of complex structure, high manufacturing cost, high energy consumption, large water consumption and small treatment amount. And the existing magnetic separator is mainly dedicated to the separation of magnetic materials and non-magnetic materials, and is not suitable for the field of water treatment.
Therefore, the design of the novel magnetic separator which can be used for separating magnetic materials and non-magnetic materials and can also be used in the field of water treatment has great significance for the water treatment field in China and even the world.
Disclosure of Invention
Aiming at the defects of large water consumption, small treatment capacity, complex structure and the like in the prior art, the invention aims to provide the low-cost and high-efficiency magnetic separation device, which can realize the continuous separation of liquid and solid, has large treatment capacity, is convenient to operate, does not need water and is beneficial to industrial application.
In order to achieve the technical purpose, the invention provides a high-flux rotary disc sewage magnetic separation device which comprises a tank and a magnetic disc sorting system, wherein a sewage treatment cavity with sealed periphery and bottom and an open top is arranged in the tank, one side of the sewage treatment cavity is a scraping area, the other side of the sewage treatment cavity is a feeding area, a feeding port and a material mixing device are arranged in the feeding area in the sewage treatment cavity, a water outlet and the magnetic disc sorting system are arranged in the scraping area, the magnetic disc sorting system comprises a magnetic disc, a rotating shaft and a rotary magnetic disc motor, the rotating shaft is horizontally arranged on the tank, the magnetic disc is arranged on the rotating shaft and is driven to rotate by the rotary magnetic disc motor, at least part of the magnetic disc is arranged in the sewage treatment cavity, and the scraping area is provided with a discharge port on the side wall of the tank, the box groove is fixed with on the discharge gate with magnetism disc position, quantity assorted scraper group, scraper group comprises two scrapers that set up in magnetism disc both sides, the interval of scraper and magnetism disc is less than the diameter of taking the magnetism material, the outside in box groove is equipped with the play hopper that corresponds with the discharge gate under scraper group.
In this embodiment, the mixing device comprises a mixing knife, a crank and rocker mechanism and a mixing knife motor, wherein the mixing knife is arranged at the bottom of the sewage treatment cavity, and the mixing knife motor drives the mixing knife to move back and forth at the bottom of the sewage treatment cavity through the crank and rocker mechanism.
In this embodiment, still include automatic control system, automatic control system includes magnetism material detector, switch board and PC, the switch board is connected with feed inlet water pump, compounding sword motor, rotatory magnetism disc motor 11, magnetism material detector, the PC that is used for the feed inlet to intake, magnetism material detector is located the water outlet, and magnetism material detector is connected with the PC, and the content of magnetism material in the magnetism material detector dynamic detection delivery port feeds back data to the PC, and the PC sets for the feed speed of magnetism disc rotation speed and feed inlet water pump through the switch board according to magnetism material content.
In this embodiment, the magnetic disk is a magnetic disk processed by a permanent magnet.
In this embodiment, the bottom of the magnetic disk is close to the bottom of the sewage treatment cavity and does not interfere with the mixing knife.
In the embodiment, an included angle of 10-30 degrees is formed between the scraper and the side face of the magnetic disc, and the blade part of the scraper is in contact with the magnetic disc.
In this embodiment, the feeding port is disposed at the bottom of one side of the tank, and the water outlet is disposed at the bottom of the other side of the tank and opposite to the feeding port.
In this embodiment, the magnetic disc is formed by fixing a plurality of magnetic blocks between two symmetrical metal disc molds.
In this embodiment, a plurality of magnetic disks are installed in parallel and at equal intervals on the rotating shaft.
A method for separating magnetic particles in sewage is characterized in that the high-flux rotary disc sewage magnetic separation device is utilized, firstly, materials with magnetic particle adsorption are put into sewage, the sewage with the magnetic particle adsorption materials enters a box groove from a feeding port, a mixing knife motor and a rotary magnetic disc motor are started to respectively drive a mixing knife and a magnetic disc sorting system to rotate, the materials with the magnetic particle adsorption materials are adsorbed onto a magnetic disc, the materials rotate to a scraper along with the magnetic disc, magnetic materials are scraped to a discharge hopper to be discharged, and non-magnetic materials are discharged from a water outlet.
The design principle is based on: the magnetic disc is mainly based on a magnetic separation principle, and magnetic components are adsorbed on the surface of the magnetic disc under the action of a permanent magnet and are driven to a scraper by a rotating shaft for separation; in the case of the non-magnetic fraction, it will leave the tank at a fixed area under the action of gravity, thus achieving separation of the magnetic fraction and the non-magnetic fraction.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the discharging scheme adopted by the invention is that the scraper is used for scraping the materials from the magnetic disc, the materials can be continuously and automatically discharged in a high efficiency manner in the working process, and the materials can directly enter the discharging area to be treated in the next step. And the scheme of adopting the scraper to unload makes need not the water and unloads, can reduce the water consumption of device, and the scraper is wear-resisting and easily changes the maintenance, and is with low costs.
2. The invention can work by using a plurality of magnetic rotating disks at the same time, has simple device and can realize the separation of a large amount of materials quickly, efficiently and at low cost.
3. The invention has small floor area, simple structure and easy maintenance, and is suitable for being used in various working environments.
4. The rotary disc magnetic separation device can be continuously operated in the process of treating materials, has simple process, convenient and automatic operation and meets the requirement of industrial production.
Drawings
FIG. 1 is a top view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a right side view of the present invention.
FIG. 4 is a flowchart of embodiment 1 of the present invention.
FIG. 5 is a flowchart of embodiment 2 of the present invention.
FIG. 6 is a flowchart of embodiment 3 of the present invention.
FIG. 7 is a flowchart of embodiment 4 of the present invention.
FIG. 8 is a flowchart of embodiment 5 of the present invention.
Wherein, 1, a tank groove; 2. a feed port; 3. a magnetic disc sorting system; 4. a scraper; 5. a discharge hopper; 6. a water outlet; 7. A mixing knife; 8. a mixing knife motor; 9. a magnetic disk; 10. a rotating shaft; 11. a rotating magnetic disk motor; 12. an automatic control system; 13. a magnetic material detector; 14. a control cabinet; 15. and (3) a PC.
Detailed Description
The present invention is further described in detail with reference to the drawings and the embodiments, and for the purpose of more clearly explaining the embodiments of the present patent or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings may be obtained based on these drawings without any creative effort.
As shown in fig. 1 to 3, a rotary disk magnetic separation apparatus includes a tank 1 fixed on the ground, a magnetic disk sorting system 3, and an automatic control system 12. A sealed sewage treatment cavity is arranged in the box groove 1, the sewage treatment cavity is provided with a feed port 2 and a water outlet 6, the feed port 2 is arranged at the bottom of one side of the box groove 1, the water outlet 6 is arranged at the bottom of the other side of the box groove 1 and is opposite to the feed port 2, a mixing device and a magnetic disc sorting system 3 are arranged in the sewage treatment cavity, the mixing device comprises a mixing knife 7, a crank rocker mechanism and a mixing knife motor 8, the mixing knife 7 is arranged at the bottom of the sewage treatment cavity, the mixing knife motor 8 drives the mixing knife 7 to move back and forth at the bottom of the sewage treatment cavity through the crank rocker mechanism, the magnetic disc sorting system 3 comprises a magnetic disc 9, a rotating shaft 10 and a rotating magnetic disc motor 11, the magnetic disc 9 is processed by a permanent magnet, and a plurality of magnetic discs 9 are parallelly and equidistantly arranged on the rotating shaft 10, the rotary shaft 10 is horizontally arranged on the box groove 1 and is driven to rotate by a rotary magnetic disc motor 11, the magnetic disc 9 is arranged in the sewage treatment cavity, preferably, the bottom of the magnetic disc 9 is close to the bottom of the sewage treatment cavity and does not interfere with a mixing knife, a scraping area is arranged on one side of the box groove 1, a scraper set matched with the magnetic disc 9 in position and quantity is arranged on the scraping area, the scraper set is composed of two scrapers 4 arranged on the magnetic disc 9, the distance between each scraper 4 and the magnetic disc 9 is smaller than the diameter of a magnetic material, a discharge hopper 5 is arranged under the scraper set in the scraping area, and the magnetic disc 9 continuously moves to enable the magnetic material in the sewage treatment cavity to be continuously sucked by the magnetic disc 9 and then scraped from the magnetic disc 9 through the scraper set, fall into a discharge hopper 5 for direct discharge. The automatic control system 12 comprises a magnetic material detector 13, a control cabinet 14 and a PC 15. The control cabinet 14 is connected with the water pump at the feeding port, the mixing knife motor 8, the rotating magnetic disk motor 11, the magnetic material detector 13 and the PC15 and is used for starting the mixing knife motor 8, the rotating magnetic disk motor 11, the magnetic material detector 13, the PC15 and the water pump at the feeding port. The magnetic material detector 13 is positioned in the water outlet 6, the magnetic material detector 1 is connected with the PC15, the magnetic material detector 1 dynamically detects the content of the magnetic material in the water outlet 6, data are fed back to the PC15, and the PC15 sets the rotation speed and the feeding speed of the magnetic disc 9 through the control cabinet according to the content of the magnetic material.
The process of the invention for treating a mixture containing magnetic particles and non-magnetic particles is as follows:
go into case groove 1 through the feed inlet water pump with the material from feed inlet 2 pump, open compounding sword motor 8 and rotatory magnetism disc motor 11 and drive compounding sword 7 and magnetism disc sorting system 3 respectively and rotate, magnetic particle material adsorbs to magnetism disc 9 on, along with magnetism disc 9 is rotatory to scraper 4 department, magnetic substance is scraped to go out hopper 5 and is unloaded, and non-magnetic substance unloads from delivery port 6, realizes magnetic solid material and non-magnetic material separation like this.
Example 1:
as shown in FIG. 4, most (70-80%) of the phosphorus-containing components in the phosphorus-containing starch wastewater are phosphate radicals, and the small part (20-30%) of the phosphorus-containing components are phosphorus-containing organic matters. Ca. Metal ions such as Fe and the like can form phosphate precipitates with phosphate radicals, so that most of phosphate radicals can be effectively removed, but the precipitates are fine in particle size, strong in dispersity and extremely difficult to settle and filter, and the problem can be perfectly solved by a magnetic separation technology; the magnetic crystal nucleus with specific granularity characteristic has certain adsorption capacity on organic phosphorus and can be used as a magnetic separation crystal nucleus to play a key role in the purification treatment of the phosphorus-containing starch wastewater. The purification scheme of the biochemical phosphorated starch wastewater of Ming Yang is a magnetic fluid crystal nucleus induction technology, and the specific parameters are as follows: lime (pH9-10) or ferric salt to purify phosphate radical, 20mg/L of magnetic crystal nucleus TK1 less than 1g/L, PFS, and 20mg/L of flocculating agent PAM10-15 mg/L.
As shown in tables 1 and 2, the purification step: adding lime and magnetic crystal nucleus TK1 into the tank 1, and mechanically stirring by a mixing device at a rotating speed of 150r/min for 5 min; PFS is added, and a mixing device is mechanically stirred for 5min at the rotating speed of 150 r/min; adding PAM, and mechanically stirring for 5min by a mixing device at a rotating speed of 100 r/min; then magnetic separation is carried out by utilizing the device. The results of the assay are shown in tables 1 and 2. The purification results show that: the phosphorus purification rate reaches 90%, COD is reduced to a certain extent (due to higher biochemical degradation efficiency, deep consideration is not made), and the introduction of the magnetic crystal nucleus greatly improves the purification efficiency of the solid suspended substances, and the content of the solid suspended substances is 23 mg/L.
TABLE 1 starch wastewater purification test results
| TP/mg/L | CODcr/mg/L | SS/mg/L | |
| Raw water | 134.34 | 6387.69 | - |
| After treatment | 16.88 | 5661.54 | 23.00 |
TABLE 2 Metal ion content of purified starch wastewater
Note: in the table, "- - -" indicates no detection.
Example 2:
as shown in figure 5, the rotating disc magnetic separation device is utilized, ethanol and stearic acid are selected to modify Fe3O4 with the mass fraction of more than 98%, the device is used for treating oil-polluted deep well underground water, and the effluent can meet the water quality standard of industrial water by combining an activated carbon adsorption method.
Example 3:
as shown in figure 6, the device is used for treating urban sewage, ferroferric oxide with the purity of more than 98% is selected as a magnetic seed, and under the combined action of a coagulant, namely aluminum sulfate and a coagulant aid, namely PAM, the removal rates of phosphorus and COD in the sewage are respectively 98.35% and 70.8%.
Example 4:
as shown in figure 7, the device is used for processing the pickle liquor of the electroplating sludge containing chromium and the pickle liquor of the laterite nickel ore. And injecting the electroplating sludge pickle liquor into a reaction kettle, stirring at 80r/min, and keeping the temperature at 85 ℃. Pre-weighed Electric Arc Furnace (EAF) dust, i.e. magnetic seeds, was regularly added in equal amounts to the reaction vessel throughout the reaction. In addition, the pickle liquor of lateritic nickel ores (as an additional iron source) is also gradually pumped into the tank during the whole reaction process. Pumping sodium hydroxide solution (6.0mol/L) at a fixed rate, and adjusting the pH value to be within the range of 2.5-4.0. Hydrogen peroxide solution (6%) was pumped in at a constant rate (0.6mL/min), fe (ii) was slowly oxidized to fe (iii), and a low concentration of iron (<1g/L) was maintained in the reactor. The solution is pumped into the device and then is magnetically separated by the device.
As shown in tables 3-5, the process allows for the efficient recovery of iron and chromium with less loss of nickel, copper and zinc. For example, under the condition of pH 3.0-3.5, the recovery rates of iron and chromium of 5g/L of magnetic seeds were 88.33% and 82.24%, respectively, while the loss rates of nickel, copper and zinc were 5.15%, 3.68% and 9.69%, respectively.
TABLE 3 chemical analysis of pickle liquor of electroplating sludge
TABLE 4 chemical analysis of the pickle liquor of nickel laterite ores
TABLE 5 grades of different metal ions in products obtained by magnetic separation at different pH values
Example 5:
as shown in figure 8, the oxygen pressure pickle liquor of vanadium-containing stone coal is processed by the device. Firstly, adding the required amount of magnetic carrier particles (EAF or magnetite samples) into the oxygen pressure pickle liquor of the vanadium-containing stone coal, stirring at the rotating speed of 350r/min, slowly adding the required polymer solution, continuing stirring for 5 minutes, and then pumping the treated suspension into the device for magnetic separation.
As shown in Table 6, by the method, the cost of disposing the oxygen pressure pickle liquor and the future solid suspension of the vanadium-containing stone coal can be obviously reduced, and compared with the traditional sedimentation method, the magnetic flocculation process does not need lime neutralization and water washing, so that V in the solution is obtained2O5And H+The content of (A) is higher, which is beneficial to subsequent treatment.
TABLE 6 removal of suspended solids before and after V2O5And H+Change in concentration of
| Species of | Untreated | Conventional processing method | Magnetic separation method |
| V2O5Concentration (g/L) | 6.54 | 1.82 | 5.85 |
| H+Concentration (mol/L) | 1.26 | 0.37 | 1.16 |
In addition, it should be noted that the present invention is not limited to the above embodiments, as long as the specific size or shape of the components is not described, the components can be any size or shape corresponding to the structure, and no matter any change is made in the material composition, the structural design provided by the present invention is a modification of the present invention, and should be considered to be within the protection scope of the present invention.
Claims (10)
1. The utility model provides a high flux rotating disc sewage magnetic separation device which characterized in that: comprises a box groove (1) and a magnetic disc sorting system (3), wherein a sewage treatment cavity with the periphery and the bottom sealed and the top opened is arranged in the box groove (1), one side of the sewage treatment cavity is a scraping area, the other side of the sewage treatment cavity is a feeding area, the feeding area in the sewage treatment cavity is provided with a feeding port (2) and a mixing device, the scraping area is provided with a water outlet (6) and the magnetic disc sorting system (3), the magnetic disc sorting system (3) comprises a magnetic disc, a rotating shaft (10) and a rotating magnetic disc motor (11), the rotating shaft (10) is horizontally arranged on the box groove (1), the magnetic disc is arranged on the rotating shaft (10) and is driven to rotate by the rotating magnetic disc motor (11), at least part of the magnetic disc is arranged in the sewage treatment cavity, the scraping area is provided with a discharge port on the side wall of the box groove (1), case groove (1) is fixed with on the discharge gate with magnetism disc position, quantity assorted scraper group, scraper group comprises two scrapers (4) that set up in magnetism disc both sides, the interval of scraper (4) and magnetism disc is less than the diameter of taking the magnetism material, be equipped with hopper (5) that correspond with the discharge gate under the scraper group in the outside of case groove (1).
2. The high throughput rotating disc magnetic separation apparatus of sewage of claim 1, wherein: the mixing device comprises a mixing knife, a crank and rocker mechanism and a mixing knife motor (8), the mixing knife is arranged at the bottom of the sewage treatment cavity, and the mixing knife motor (8) drives the mixing knife to move back and forth at the bottom of the sewage treatment cavity through the crank and rocker mechanism.
3. The high throughput rotating disc magnetic separation apparatus of sewage of claim 2, wherein: also comprises an automatic control system (12), wherein the automatic control system (12) comprises a magnetic material detector (13), a control cabinet (14) and a PC (15), the control cabinet (14) is connected with a feed inlet water pump, a mixing knife motor (8), a rotary magnetic disc motor (11), a magnetic material detector (13) and a PC (15), the feeding port water pump is used for feeding water into the feeding port (2), the magnetic material detector (13) is positioned in the water outlet (6), the magnetic material detector (13) is connected with the PC (15), the magnetic material detector (13) dynamically detects the content of the magnetic material in the water gap (6), data is fed back to the PC (15), the PC (15) feeds back the data to the PC (15) according to the content of the magnetic material, the rotating speed of the rotating magnetic disc motor (11) and the feeding speed of the water pump at the feeding port are set through a control cabinet (14).
4. The high throughput rotating disc magnetic separation apparatus of sewage of claim 1, wherein: the magnetic disc is a magnetic disc processed by a permanent magnet.
5. The high throughput rotating disc magnetic separation apparatus of sewage of claim 1, wherein: the magnetic disc is formed by fixing a plurality of magnetic blocks between two symmetrical metal disc type moulds.
6. The high throughput rotating disc magnetic separation apparatus of sewage of claim 1, wherein: the bottom of the magnetic disc is close to the bottom of the sewage treatment cavity and does not interfere with the mixing knife.
7. The high throughput rotating disc magnetic separation apparatus of sewage of claim 1, wherein: and an included angle of 10-30 degrees is formed between the scraper (4) and the side face of the magnetic disc.
8. The high throughput rotating disc magnetic separation apparatus of sewage of claim 1, wherein: the blade part of the scraper (4) is in contact with the magnetic disc.
9. The high throughput rotating disc magnetic separation apparatus of sewage of claim 1, wherein: the rotating shaft (10) is provided with a plurality of magnetic discs which are arranged in parallel and at equal intervals.
10. A method for separating magnetic particles from wastewater using the high flux rotating disc magnetic wastewater separation unit of claim 3, wherein: firstly, put in the sewage and take magnetic particle to adsorb the material, the sewage that will have taken magnetic particle to adsorb the material gets into case groove (1) from feed inlet (2), open compounding sword motor (8) and rotatory magnetism disc motor (11) and drive compounding sword and magnetism disc sorting system (3) rotation respectively, take magnetic particle to adsorb the material and adsorb to the magnetism disc on, rotatory to scraper (4) department along with the magnetism disc, magnetic substance is scraped and is fallen to play hopper (5) and unload, non-magnetic substance unloads from delivery port (6) department.
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