CN110723842A - Integrated multi-effect clarification system and clarification method thereof - Google Patents
Integrated multi-effect clarification system and clarification method thereof Download PDFInfo
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- 238000005352 clarification Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000005189 flocculation Methods 0.000 claims abstract description 65
- 230000016615 flocculation Effects 0.000 claims abstract description 64
- 238000006243 chemical reaction Methods 0.000 claims abstract description 58
- 239000002351 wastewater Substances 0.000 claims abstract description 39
- 239000000701 coagulant Substances 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 239000008394 flocculating agent Substances 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 239000004576 sand Substances 0.000 claims description 6
- 239000006247 magnetic powder Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 3
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses an integrated multi-effect clarification system and a clarification method thereof, which are used for treating wastewater stored in a catchment basin; the system comprises a lift pump, a flocculation reaction tank, a flocculation dosing tank, a multi-effect clarification tank and a dehydrator; inputting the wastewater in the catchment tank into a flocculation reaction tank through a wastewater discharge port by a lift pump, starting an axial flow stirrer, and simultaneously adding a flocculating agent and/or a coagulant; and starting the hydraulic cyclone and the mud scraper to discharge the precipitated water entering the multi-effect clarification tank into the dehydrator, filtering the filtrate by the dehydrator, then refluxing the filtrate to the water collecting tank, and discharging the clear water, the top of which is filtered again by the inclined plate group, through a clear water discharge port. The invention highly integrates various technologies which are beneficial to solid-liquid separation, such as chemical flocculation, mechanical stirring, loading sedimentation, inclined tube separation and the like, maintains high-speed and compact effluent of a multi-effect clarification system, has the advantages of good effluent quality, strong impact resistance and operation cost saving, and increases the flexibility of operation.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to an integrated multi-effect clarification system and a clarification method thereof.
Background
Bleeding, washing water, dust suppression water and rainwater generated in iron ore storage and transportation overshoot are main sources of iron ore storage and transportation wastewater. The wastewater contains a large amount of suspended matters and has high chroma, and according to the practical operation experience of engineering, the concentration of the suspended matters in the wastewater can reach 3000mg/l, and the chroma can reach more than 500. The part of waste water can not be directly discharged and can not be directly recycled, and proper treatment is needed to meet the requirement of recycling water quality. Similarly, in other mine waste water, mine water, coal-containing waste water and other similar industrial fields, the high-suspended substance waste water generated in the production process also needs to be recycled.
The waste water is a mixture of water and fine mud materials, and is mainly characterized by high turbidity, fine solid particle size, more negative charges on the surface of solid particles, and the repulsion among the charges with the same polarity to ensure that the particles are kept in a dispersed state in the water and are influenced by gravity and Brownian motion; due to the interaction (such as adsorption, dissolution, chemical combination, etc.) between the solid particle interfaces in the wastewater, the properties of the wastewater are quite complex, and the wastewater not only has the properties of suspension, but also has the properties of colloid. For the above reasons, it is difficult to naturally clarify the waste water, and the supernatant of the waste water after sedimentation is a pale yellow liquid with a large amount of suspended substances such as fine mud. By adopting the traditional treatment process, only larger solid particles and partial suspended matters can be removed, and a large amount of fine-grained suspended matters and chromaticity in the wastewater cannot be removed at all, so that the development of a new technology and a new process for efficiently treating the fine-grained wastewater is of great significance.
Therefore, how to provide a clarification system and a clarification method with good wastewater treatment effect and high treatment efficiency is an urgent problem to be solved by the technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention provides an integrated multi-effect clarification system and a clarification method thereof, which aims to solve the above problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
an integrated multi-effect clarification system is used for treating wastewater stored in a water collecting pool; the method comprises the following steps: a lift pump, a flocculation reaction tank, a flocculation dosing tank, a multi-effect clarification tank and a dehydrator;
one end of the lifting pump is communicated with the water collecting pool;
a wastewater discharge inlet of the flocculation reaction tank is positioned at the bottom of the flocculation reaction tank and is communicated with the other end of the lifting pump; the top of the flocculation reaction tank is provided with an axial flow stirrer inserted into the flocculation reaction tank;
the flocculation dosing tank is communicated with the flocculation reaction tank through a pipeline and is used for adding a flocculant and/or a coagulant into the flocculation reaction tank;
the side wall of the multi-effect clarification tank is fixedly attached to the side wall of the flocculation reaction tank, and the top of the attachment surface is provided with a communicated water through hole; the top of the multi-effect clarification tank is provided with an inclined plate group, and the bottom of the multi-effect clarification tank is provided with a mud scraper; the top of the side wall of the multi-effect clarification tank corresponding to the flocculation reaction tank is provided with a clean water outlet;
the feed inlet of the dehydrator is communicated with the bottom of the multi-effect clarification tank, the water outlet of the dehydrator is communicated with the water collecting tank, and a mud outlet forms a mud cake.
Through the technical scheme, the invention provides the improvement based on the most advanced high-efficiency loading sedimentation tank at present, and various technologies beneficial to solid-liquid separation, such as chemical flocculation, mechanical stirring, loading sedimentation, inclined tube separation and the like, are highly integrated, so that the high-speed and compact water outlet of a multi-effect clarification system is maintained, the water outlet quality is good, the impact resistance is strong, the operation cost is saved, the operation flexibility is increased, and the addition of different media can be realized aiming at different water qualities and applications, or the addition flexibility is not needed.
Preferably, in the integrated multi-effect clarification system, the flocculation reaction tank is of a secondary reaction structure and is formed by attaching two reaction tank units arranged in parallel, and the bottoms of the attached side walls of the two reaction tank units are communicated; and each reaction tank unit is provided with the axial flow stirrer. The flocculation effect on the waste water can be further improved.
Preferably, in the above integrated multiple-effect clarification system, a base is further included; the flocculation reaction tank, the flocculation dosing tank, the multi-effect clarification tank and the dehydrator are all fixedly arranged on the base. The fixed mounting of being convenient for, and can with base monolithic stationary on large-scale truck, remove and drag the line, convenient to use.
Preferably, in the above integrated multiple-effect clarification system, the flocculation reaction tank, the multiple-effect clarification tank and the flocculation dosing tank are arranged in parallel in sequence. The space is saved, and the arrangement is reasonable.
Preferably, in the above-mentioned one integrated multi-effect clarification system, the flocculant is a polyacrylamide substance with a relatively large molecular weight; the coagulant is an aluminum salt or iron salt coagulant. The flocculation effect can be improved.
Preferably, in the above integrated multi-effect clarification system, the inclined tube group is formed by obliquely arranging a plurality of tube bodies made of PP material and having a tube diameter of 80 mm. The filter effect can be effectively improved, the design of the inclined plate group improves the hydraulic ascending flow speed on one hand, the occupied area is saved, on the other hand, the residual alum blossom escaping from the pre-settling area is further separated, and excellent clear water outlet is ensured. The uniform water distribution of the whole inclined plate group is very important, and the short circuit of water flow can be avoided, so that the precipitation is finished under the optimal state.
Preferably, in the above integrated multiple-effect clarification system, the mud scraper is a suspended central transmission mud scraper. The mud scraping effect can be improved.
Preferably, in the integrated multi-effect clarification system, a hydrocyclone which is communicated up and down is installed in the multi-effect clarification tank. The hydrocyclone can ensure the recovery efficiency of the medium, so that most of the medium can be effectively recovered.
A clarification method of an integrated multi-effect clarification system, comprising the following steps:
s1, inputting the wastewater in the catchment tank into a flocculation reaction tank through a wastewater discharge port by a lift pump, starting an axial flow stirrer, and adding a flocculating agent and/or a coagulant;
and S2, starting the hydrocyclone and the mud scraper to discharge the precipitated water entering the multi-effect clarification tank into the dehydrator, filtering the precipitated water by the dehydrator, then refluxing the filtered water to the water collecting tank, and discharging the clear water, the top of which is filtered again by the inclined plate group, through the clear water discharge port.
Preferably, in the above-mentioned one integrated multi-effect clarification method, in S1, fine sand and/or magnetic powder heavy medium carrier is added. The addition of heavy media carriers such as fine sand, magnetic powder and the like enables flocs generated after coagulation and flocculation reactions to be more compact and increase the specific gravity, thereby accelerating the sedimentation speed of the flocs, improving the ascending flow rate, ensuring the quality of effluent and reducing the occupied area. Because the wastewater contains small granular substances such as ore sand, slime and the like, the wastewater has the characteristic of a carrier, and floc can be rapidly settled without adding the carrier. Therefore, carriers such as fine sand, magnetic powder and the like are not added in the conventional treatment process of the wastewater, and the wastewater is only used in emergency (the concentration of raw water is low or the treated water amount is increased suddenly).
According to the technical scheme, compared with the prior art, the invention discloses and provides an integrated multi-effect clarification system and a clarification method thereof, integrates the characteristics of various sedimentation technologies, and mainly embodies the aspects of high sedimentation efficiency, stable and excellent effluent quality, small occupied area, strong impact resistance, flexible and reliable operation, operation consumption saving and the like:
1. the precipitation efficiency is high: the multi-effect clarification tank creates good conditions for forming alum blossom capable of rapidly precipitating, and simultaneously, the characteristics of additional medium, inclined tube separation and perfect hydraulic design are assisted, so that the ascending flow rate of the system is extremely achieved.
2. Excellent water outlet stability: the good coagulation and flocculation conditions strengthen the capture and aggregation of pollutants; the inclined pipe can remove the residual alum blossom to produce high-quality effluent. The excellent suspended matter removing capacity can be compared with that of the conventional filtration.
3. The occupied area is small: the ultra-high rising flow rate, the extremely short reaction time requirement and the compact structural design make the multi-effect clarification one of the most compact sedimentation systems at present. The occupied area of the sedimentation tank is over 50 percent less than that of the currently and commonly used high-efficiency sedimentation tank.
4. Strong impact resistance: the method is characterized in that the extremely high sludge concentration (about 4-8 g/L) of the flocculation reaction tank is controlled through sludge backflow, and is a normal working condition of the multi-effect clarification tank, compared with the sludge concentration in raw water, the concentration of circulating sludge is much higher, and the working condition cannot be influenced by the change of the raw water concentration, so that the formation of alum floc cannot be damaged, and the normal operation of a system cannot be influenced.
5. Saving the operation medicament: perfect stirring reaction design has improved the reaction efficiency of medicament, and the setting of mud backward flow can further recycle the medicament of not reacting completely simultaneously for the system reaches the required medicament greatly reduced of same reaction efficiency. The using amount of the medicament is saved, thereby obviously saving the operating cost.
6. The system head loss is small: the compact structural design and the reasonable hydraulic design reduce the head loss of the integrated multi-effect clarification system.
7. The advantages of the integrated system are as follows: the quality is stable and reliable in industrialized production: the integrated system is manufactured in a factory through a design specialization system, a production industrialization system, an assembly process system and a quality standardization system, and the quality is stable and reliable. Modular design does benefit to later stage enlargement: the integrated system adopts standardized module design, the occupied area of the equipment is small, the civil engineering construction is less, and the later-stage extension of the project is facilitated. The civil construction is few, and construction period shortens: the integrated system complete equipment is processed in a factory, civil construction only needs an equipment foundation, equipment installation only needs simple pipelines and cables for connection, the construction period is greatly shortened, and investment cost is indirectly saved. The vehicular design, the convenient removal operation: the vehicle-mounted integrated multi-effect clarification system does not need civil construction, is convenient to move, can be quickly delivered, and can immediately start to operate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a flow structure provided by the present invention;
fig. 2 is a schematic structural diagram provided by the present invention.
Wherein:
1-a water collecting pool;
2-a lift pump;
3-a flocculation reaction tank;
31-a wastewater discharge port;
4-flocculation dosing tank;
5-a multi-effect clarification tank;
51-water through port;
52-clear water discharge port;
6-dewatering machine;
7-axial flow agitator;
8-inclined plate group;
9-a mud scraper;
10-a base;
11-hydrocyclone.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to the attached drawings 1 and 2, the embodiment of the invention discloses an integrated multi-effect clarification system for treating wastewater stored in a water collecting tank 1; the method comprises the following steps: a lift pump 2, a flocculation reaction tank 3, a flocculation dosing tank 4, a multi-effect clarification tank 5 and a dehydrator 6;
one end of the lift pump 2 is communicated with the water collecting tank 1;
a wastewater discharge inlet of the flocculation reaction tank 3 is positioned at the bottom of the flocculation reaction tank and is communicated with the other end of the lifting pump 2; the top of the flocculation reaction tank 3 is provided with an axial flow stirrer 7 inserted into the flocculation reaction tank;
the flocculation dosing tank 4 is communicated with the flocculation reaction tank 3 through a pipeline and is used for adding a flocculant and/or a coagulant into the flocculation reaction tank 3;
the side wall of the multi-effect clarification tank 5 is fixedly attached to the side wall of the flocculation reaction tank 3, and the top of the attachment surface is provided with a water through hole 51 which is communicated with the attachment surface; the top of the multi-effect clarification tank 5 is provided with an inclined plate group 8, and the bottom is provided with a mud scraper 9; the top of the side wall of the multi-effect clarification tank 5 corresponding to the flocculation reaction tank 3 is provided with a clean water outlet 52;
the feed inlet of the dewatering machine 6 is communicated with the bottom of the multi-effect clarification tank 5, the water outlet is communicated with the water collecting tank 1, and a mud outlet forms mud cakes.
In order to further optimize the technical scheme, the flocculation reaction tank 3 is of a secondary reaction structure and is formed by jointing two reaction tank units which are arranged in parallel, and the bottoms of the jointed side walls of the two reaction tank units are communicated; each reaction cell unit is provided with an axial flow stirrer 7.
In order to further optimize the technical scheme, the device also comprises a base 10; the flocculation reaction tank 3, the flocculation dosing tank 4, the multi-effect clarification tank 5 and the dehydrator 6 are all fixedly arranged on the base 10.
In order to further optimize the technical scheme, the flocculation reaction tank 3, the multi-effect clarification tank 5 and the flocculation dosing tank 4 are sequentially arranged in parallel.
In order to further optimize the technical scheme, the flocculating agent is a polyacrylamide substance with larger molecular weight; the coagulant is aluminum salt or iron salt coagulant.
In order to further optimize the technical scheme, the inclined tube group 8 is formed by obliquely arranging a plurality of tube bodies made of PP materials and having a tube diameter of 80 mm.
In order to further optimize the above technical solution, the mud scraper 9 is a suspended central transmission mud scraper.
In order to further optimize the technical scheme, a hydrocyclone 11 which is communicated up and down is arranged in the multi-effect clarification tank 5.
Example 2:
referring to the attached figures 1 and 2, the embodiment discloses an integrated multi-effect clarification method, which comprises the following steps:
s1, inputting the wastewater in the water collecting tank 1 into the flocculation reaction tank 3 through the wastewater discharge port 31 by the lift pump 2, starting the axial flow stirrer 7, and adding a flocculating agent and/or a coagulant;
s2, starting the hydrocyclone 11 and the mud scraper 9, discharging the precipitated water entering the multi-effect clarification tank 5 into the dehydrator 6, filtering the water by the dehydrator 6, then refluxing the filtered water to the water collecting tank 1, and discharging the clear water, the top of which is filtered again by the inclined plate group 8, through the clear water discharge port 52.
In order to further optimize the above technical solution, in S1, fine sand and/or magnetic powder heavy medium carriers are added.
The specific principle of the embodiment is as follows:
the existing water collecting tank 1 is utilized, two lifting pumps 2 are additionally arranged, and the collected waste water is lifted to an integrated multi-effect clarification system through a submersible sewage pump.
The wastewater is sent into an integrated multi-effect clarification system by a lift pump 2 and then firstly enters a flocculation reaction tank 3, suspended matters in the wastewater to be treated entering are promoted to form larger flocs through adsorption, electric neutralization and mutual bridging action by a flocculating agent/coagulant, and the medicament and the flocs can be fully mixed without damaging the formed large flocs under the action of a slow axial flow stirrer 7.
The sewage which forms the floc through the flocculation reaction enters the multi-effect clarification tank 5 at a low speed, and the floc is ensured not to be damaged. Then enters a settling zone, and the coagulated flocs settle to the bottom of the tank in the zone. The upper part of the settling zone is provided with the inclined plate group, the main function is flow guiding, the transverse flow of water flow is avoided, and the influence of the transverse flow on the settling effect is reduced). The fine flocs are further removed on the inclined tube. The clarified supernatant reaches the standard and is discharged into a water pipeline.
The bottom of the multi-effect clarification tank 5 is a sludge area, a mud scraper 9 is arranged to scrape sludge to a central mud bucket and discharge the sludge into a dehydrator 6, filtrate of the dehydrator 6 flows back to the water collecting tank 1, and clear water filtered again through the inclined plate group 8 at the top is discharged through a clear water discharge port 52.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An integrated multi-effect clarification system is used for treating wastewater stored in a water collecting tank (1); it is characterized by comprising: a lift pump (2), a flocculation reaction tank (3), a flocculation dosing tank (4), a multi-effect clarification tank (5) and a dehydrator (6);
one end of the lifting pump (2) is communicated with the water collecting tank (1);
a wastewater discharge inlet of the flocculation reaction tank (3) is positioned at the bottom of the flocculation reaction tank and is communicated with the other end of the lifting pump (2); the top of the flocculation reaction tank (3) is provided with an axial flow stirrer (7) inserted into the flocculation reaction tank;
the flocculation dosing tank (4) is communicated with the flocculation reaction tank (3) through a pipeline and is used for adding a flocculant and/or a coagulant into the flocculation reaction tank (3);
the side wall of the multi-effect clarification tank (5) is fixedly attached to the side wall of the flocculation reaction tank (3), and the top of the attachment surface is provided with a water through hole (51) which is communicated with the attachment surface; the top of the multi-effect clarification tank (5) is provided with an inclined plate group (8), and the bottom is provided with a mud scraper (9); the top of the side wall of the multi-effect clarification tank (5) corresponding to the flocculation reaction tank (3) is provided with a clear water outlet (52);
the feed inlet of the dehydrator (6) is communicated with the bottom of the multi-effect clarification tank (5), the water outlet is communicated with the water collecting tank (1), and a mud outlet forms a mud cake.
2. The integrated multi-effect clarification system according to claim 1, wherein the flocculation reaction tank (3) is of a secondary reaction structure and is formed by jointing two reaction tank units which are arranged in parallel, and the bottoms of the jointed side walls of the two reaction tank units are communicated; each reaction tank unit is provided with the axial flow stirrer (7).
3. The integrated multi-effect clarification system according to claim 1, further comprising a base (10); the flocculation reaction tank (3), the flocculation dosing tank (4), the multi-effect clarification tank (5) and the dehydrator (6) are all fixedly arranged on the base (10).
4. The integrated multi-effect clarification system according to claim 3, wherein the flocculation reaction tank (3), the multi-effect clarification tank (5) and the flocculation dosing tank (4) are arranged in parallel in sequence.
5. The integrated multi-effect clarification system according to claim 1, wherein the flocculant is a relatively high molecular weight polyacrylamide; the coagulant is an aluminum salt or iron salt coagulant.
6. The integrated multi-effect clarification system according to claim 1, wherein the inclined tube group (8) is formed by obliquely arranging a plurality of tube bodies which are made of PP materials and have the tube diameters of 80 mm.
7. The integrated multi-effect clarification system according to claim 1, wherein the mud scraper (9) is a suspended central transmission mud scraper.
8. The integrated multi-effect clarification system according to claim 1, characterized in that a hydrocyclone (11) is installed in the multi-effect clarification tank (5) and is communicated up and down.
9. A clarification method using the integrated multi-effect clarification system of any one of claims 1-9, characterized by the steps of:
s1, inputting the wastewater in the water collecting tank (1) into a flocculation reaction tank (3) through a wastewater discharge port (31) by a lift pump (2), starting an axial flow stirrer (7), and adding a flocculating agent and/or a coagulant;
s2, starting the hydraulic cyclone (11) and the mud scraper (9), discharging the precipitated water entering the multi-effect clarification tank (5) into the dehydrator (6), filtering the water by the dehydrator (6), returning the filtered water to the water collecting tank (1), and discharging the clear water filtered again by the inclined plate group (8) from the top through the clear water discharge port (52).
10. The integrated multi-effect clarification method according to claim 9, wherein in S1, fine sand and/or magnetic powder heavy medium carrier is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911174809.5A CN110723842A (en) | 2019-11-26 | 2019-11-26 | Integrated multi-effect clarification system and clarification method thereof |
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