CN111825293A - Sludge-water separation process for cyclone tank of steel mill - Google Patents
Sludge-water separation process for cyclone tank of steel mill Download PDFInfo
- Publication number
- CN111825293A CN111825293A CN201910318245.1A CN201910318245A CN111825293A CN 111825293 A CN111825293 A CN 111825293A CN 201910318245 A CN201910318245 A CN 201910318245A CN 111825293 A CN111825293 A CN 111825293A
- Authority
- CN
- China
- Prior art keywords
- tank
- sludge
- cyclone
- pump
- newly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Cyclones (AREA)
Abstract
The invention discloses a sludge-water separation process for a cyclone tank of a steel mill, which comprises the following steps: newly building a sludge pre-sedimentation tank; newly building a sludge transfer pool; the sludge at the bottom is pumped out to a steel tank by a submersible stirring wear-resistant slurry pump in a newly-built sludge pre-sedimentation tank, automatically flows to a newly-built sludge transfer tank, and is conveyed to the scale iron steel slag pit beside the cyclone tank through a wear-resistant slag slurry trickle pump; sludge is naturally filtered in the iron scale pit by a special filtering device and then is grabbed to a truck for outward transportation along with the iron scale, and wastewater automatically flows into the cyclone tank. The sludge is grabbed to a truck for outward transportation along with the iron scale after the sludge is naturally filtered by a special filtering device in the iron scale pit, and the wastewater automatically flows into the cyclone tank; the concentration tank and the plate-and-frame filter press are omitted, the process flow is shortened, the occupied area is saved, the workload of equipment operation, maintenance and management is reduced, the labor intensity is reduced, the configuration of workers is reduced, and the operation and maintenance cost of the equipment is greatly reduced.
Description
Technical Field
The invention relates to the technical field of mud-water separation, in particular to a process for separating mud from water in a cyclone tank of a steel mill.
Background
The water treatment system is one of the main measures for environmental protection, energy conservation and consumption reduction of the metallurgical industry production enterprises, and plays an important role in economic cycle development, energy conservation, consumption reduction and clean production of the enterprises. The cyclone tank is a process facility for collecting industrial wastewater in a rolling line water treatment system of a steel mill, which not only ensures the recycling of cooling water of the rolling line system, but also has the function of flushing and collecting iron scale, so that the normal operation of the rolling line system of the whole steel mill is directly influenced by the water level control of the cyclone tank.
When the device works, sewage in the rotational flow tank is conveyed to the sewage treatment tank through the water pump for treatment and then is recycled. In the normal production in-process, according to the arrangement of production output and maintenance and examine the demand, there may be production line shut down state, the intake velocity in whirl pond also can be influenced, need start the water pump of different quantity according to the water level according to whirl pond, realize the stability of whirl pond water level, simultaneously, give with the sufficient settling time in whirl pond, make the cinder in the sewage fully precipitate, then return the ironmaking and continue to use.
The traditional sludge treatment process is long, a concentration tank and a plate-and-frame filter press are required to be used, and equipment maintenance is required to be carried out on the concentration tank and the plate-and-frame filter press regularly, so that the equipment operation and maintenance cost is undoubtedly increased.
Disclosure of Invention
The invention aims to provide a sludge-water separation process for a cyclone tank of a steel mill, sludge is grabbed to a truck for outward transportation along with iron scales after the iron scale pit is naturally filtered by a special filtering device, and wastewater automatically flows into the cyclone tank; the concentration tank and the plate-and-frame filter press are omitted, the process flow is shortened, the occupied area is saved, the workload of equipment operation, maintenance and management is reduced, the labor intensity is reduced, the configuration of workers is reduced, and the equipment operation and maintenance cost is greatly reduced, so that the problems in the background art are solved.
In order to achieve the purpose, the invention provides the following technical scheme:
a process for separating sludge and water in a cyclone tank of a steel mill comprises the following steps:
step 1: newly building a sludge pre-sedimentation tank;
step 2: newly building a sludge transfer pool;
and step 3: the sludge at the bottom is pumped out to a steel tank by a submersible stirring wear-resistant slurry pump in a newly-built sludge pre-sedimentation tank, automatically flows to a newly-built sludge transfer tank, and is conveyed to the scale iron steel slag pit beside the cyclone tank through a wear-resistant slag slurry trickle pump;
and 4, step 4: after being naturally filtered by a special filtering device in the iron scale pit, the sludge is grabbed to a truck for outward transportation along with the iron scale, and the wastewater automatically flows into a rotational flow tank;
and 5: deoiling in a cyclone tank, then conveying the deoiled wastewater to a advection tank through a submersible stirring wear-resistant slurry pump for further deoiling, and conveying the wastewater to a filter through the submersible stirring wear-resistant slurry pump;
step 6: after being filtered by the filter, one part of the waste water enters a pre-concentration tank and then enters a sludge tank, the other part of the waste water enters a cooling tower for cooling, then enters a water absorption well, and finally is pumped out for recycling.
Further, the sludge pre-sedimentation tank is 50m long, 10 m wide and 4m deep.
Further, the sludge transfer tank is 12m long, 4m wide and 3m deep, and is provided with a wear-resistant slurry trickle delivery pump, wherein the single pump flow rate Q =200m3/H, and the head H =60 m.
Furthermore, a filtering device is arranged in the iron scale pit of the cyclone pool, and the filtering device is 16 meters long, 1 meter wide and 2 meters high.
Further, the filtering device consists of a stainless steel perforated plate and a main body filtering plate.
Furthermore, the power of the wear-resistant slurry trickle delivery pump is 4.5KW, and the wear-resistant slurry trickle delivery pump can be used in the environment with the concentration of 10-40% and the particle size of less than or equal to 14 mm.
Further, the sludge transfer pool is arranged into a cone hopper structure and is provided with a stirrer with 3KW power.
Compared with the prior art, the invention has the beneficial effects that: the process for separating the sludge and the water in the cyclone tank of the steel mill does not change the original process of turbid circulating water in the steel mill, sludge is grabbed to a truck for outward transportation along with iron scales after the iron scale pits are naturally filtered by using a special filtering device, and wastewater automatically flows into the cyclone tank; the concentration tank and the plate-and-frame filter press are omitted, the process flow is shortened, the occupied area is saved, the workload of equipment operation, maintenance and management is reduced, the labor intensity is reduced, the configuration of workers is reduced, and the operation and maintenance cost of the equipment is greatly reduced.
Drawings
FIG. 1 is a process flow diagram of the present invention.
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.
A process flow of sludge-water separation of a cyclone tank of a steel mill is shown in figure 1, and comprises the following steps:
step 1: a sludge pre-sedimentation tank (with the length of 50m, the width of 10 m and the depth of 4 m) is newly built;
step 2: newly building a sludge transfer pool (the length is 12m, the width is 4m, the depth is 3m, and the sludge transfer pool is provided with a wear-resistant slurry trickle delivery pump, the flow rate of a single pump Q =200m3/H and the lift H =60 m), wherein the sludge transfer pool adopts a cone hopper design, is beneficial to slurry sedimentation, and is provided with a 3KW stirrer, and the stirring is carried out frequently to avoid sedimentation;
and step 3: the method comprises the following steps that (1) a scale pit (a filtering device, a stainless steel porous plate and a main body filtering plate are 16 meters long, 1 meter wide and 2 meters high) in a cyclone pool, muddy water at the bottom of the newly-built sludge pre-sedimentation pool is pumped to a steel tank by using a submersible stirring wear-resistant mud pump (a special stirring tool bit is 3 Kw), the muddy water flows to a newly-built sludge transfer pool automatically, and the muddy water is conveyed to the scale pit beside the cyclone pool by a wear-resistant slurry trickle conveying pump (4.5Kw, the pump can be used in the environment with the concentration of 10-40% and the particle size of less than or equal to 14 mm) through the selection;
and 4, step 4: sludge is grabbed to a truck for outward transportation along with iron scales after the iron scale pits are naturally filtered by using a special filtering device, wastewater automatically flows into a rotational flow tank, and an original concentration tank and a plate-and-frame filter press are idle, so that a large amount of operation cost, equipment maintenance cost and dosing cost are saved;
and 5: deoiling in a cyclone tank, then conveying the deoiled wastewater to a advection tank through a submersible stirring wear-resistant slurry pump for further deoiling, and conveying the wastewater to a filter through the submersible stirring wear-resistant slurry pump;
step 6: after being filtered by the filter, one part of the waste water enters a pre-concentration tank and then enters a sludge tank, the other part of the waste water enters a cooling tower for cooling, then enters a water absorption well, and finally is pumped out for recycling.
Compared with the traditional long sludge treatment process, the method has the advantages of short process flow, small occupied area and investment saving. In addition, a concentration tank, a plate-and-frame filter press and the like are omitted, and the equipment operation and maintenance cost is greatly reduced. The operation of the water level and the pump realizes full monitoring (a water inlet treatment central control room PLC), and full automatic operation. The operation can be stabilized only by patrol management. The pre-concentration tank supernatant was still flowing to the advection tank and the system of the present invention was equipped with electrical instrumentation as in table 1.
TABLE 1 systems outfitted with Electrical instruments categorizing
| Static pressure liquid level transducer | FMX 167A 1ABD1C7 | Table (Ref. Table) | 2 | Effective detection distance is 0-4 m | |
| Towing cable of suction dredge | 3*6+1*4mm2 | Rice and its production process | 300 | ||
| Suction dredgeControl and operation integrated cabinet | Stainless steel material, IP54 | Table (Ref. Table) | 1 | ||
| Integrative cabinet of pump control operation | Stainless steel material, IP54 | Table (Ref. Table) | 2 |
Compared with the traditional advection filtration method, the method of the invention has the following table 2, and the two methods have the treatment capacity of 10000m3The results of the/h comparison are as follows:
through the comparative analysis of the comprehensive economic technology, the invention saves the occupied area by 2500m compared with the traditional advection filtering method2The method has the advantages that more space is reserved for the development of enterprises, the investment is directly saved by more than 1500 ten thousand yuan, the operation and maintenance cost is saved by more than 200 ten thousand yuan every year after the method is built, the process flow is shortened, the workload of equipment operation, maintenance and management is reduced, the labor intensity is reduced, and the configuration of workers is reduced. In the environmentThe method has great advantages in protection, environment optimization and clean production, and reduces the environmental protection risk.
In conclusion, the sludge-water separation process of the cyclone tank of the steel mill provided by the invention does not change the original turbid circulating water process of the steel mill, sludge is grabbed to a truck for outward transportation along with iron scales after the iron scale pits are naturally filtered by using a special filtering device, and wastewater automatically flows into the cyclone tank; the concentration tank and the plate-and-frame filter press are omitted, the process flow is shortened, the occupied area is saved, the workload of equipment operation, maintenance and management is reduced, the labor intensity is reduced, the configuration of workers is reduced, and the operation and maintenance cost of the equipment is greatly reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (7)
1. The process for separating mud from water in the cyclone tank of the steel mill is characterized by comprising the following steps of:
step 1: newly building a sludge pre-sedimentation tank;
step 2: newly building a sludge transfer pool;
and step 3: the sludge at the bottom is pumped out to a steel tank by a submersible stirring wear-resistant slurry pump in a newly-built sludge pre-sedimentation tank, automatically flows to a newly-built sludge transfer tank, and is conveyed to the scale iron steel slag pit beside the cyclone tank through a wear-resistant slag slurry trickle pump;
and 4, step 4: after being naturally filtered by a special filtering device in the iron scale pit, the sludge is grabbed to a truck for outward transportation along with the iron scale, and the wastewater automatically flows into a rotational flow tank;
and 5: deoiling in a cyclone tank, then conveying the deoiled wastewater to a advection tank through a submersible stirring wear-resistant slurry pump for further deoiling, and conveying the wastewater to a filter through the submersible stirring wear-resistant slurry pump;
step 6: after being filtered by the filter, one part of the waste water enters a pre-concentration tank and then enters a sludge tank, the other part of the waste water enters a cooling tower for cooling, then enters a water absorption well, and finally is pumped out for recycling.
2. The process for separating sludge from water in the cyclone tank of the steel mill as claimed in claim 1, wherein the sludge pre-sedimentation tank is 50m long, 10 m wide and 4m deep.
3. The process for separating sludge from water in the cyclone tank of the steel mill as claimed in claim 1, wherein the sludge transfer tank is 12m long, 4m wide and 3m deep, and is provided with an abrasion-resistant slurry trickle delivery pump, the single pump flow rate Q =200m3/H, and the head H =60 m.
4. The process for separating mud from water in the cyclone tank of the steel mill as claimed in claim 1, wherein a filter device is installed in the iron scale pit of the cyclone tank, and the filter device has a length of 16 m, a width of 1 m and a height of 2 m.
5. The process of claim 4, wherein the filtering device comprises a stainless steel perforated plate and a main body filtering plate.
6. The process of claim 1, wherein the power of the abrasion-resistant slurry trickle transfer pump is 4.5KW, and the abrasion-resistant slurry trickle transfer pump can be used in an environment with the concentration of 10-40% and the particle size of 14mm or less.
7. The process of claim 1, wherein the sludge transfer tank is of a cone bucket structure and is provided with a stirrer with 3KW power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910318245.1A CN111825293A (en) | 2019-04-19 | 2019-04-19 | Sludge-water separation process for cyclone tank of steel mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910318245.1A CN111825293A (en) | 2019-04-19 | 2019-04-19 | Sludge-water separation process for cyclone tank of steel mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111825293A true CN111825293A (en) | 2020-10-27 |
Family
ID=72911394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910318245.1A Pending CN111825293A (en) | 2019-04-19 | 2019-04-19 | Sludge-water separation process for cyclone tank of steel mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111825293A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006212569A (en) * | 2005-02-04 | 2006-08-17 | Nippon Steel Corp | Slurry concentrating method |
| CN101417843A (en) * | 2008-11-21 | 2009-04-29 | 韶关市雅鲁环保实业有限公司 | Secondary cooling water recycling process of steel plant continuous casting |
| CN102557385A (en) * | 2012-02-08 | 2012-07-11 | 韶关市雅鲁环保实业有限公司 | Treatment process of sludge from turbid circulating system of steel enterprise hot rolling factory |
| CN102730919A (en) * | 2012-06-20 | 2012-10-17 | 内蒙古包钢钢联股份有限公司 | Method for processing sludge in steel rolling direct cooling recirculated cooling water system |
| CN104261609A (en) * | 2014-10-10 | 2015-01-07 | 重庆钢铁股份有限公司 | Continuous casting turbid circulating water treatment system and technology |
| CN105776662A (en) * | 2016-04-14 | 2016-07-20 | 北京绿恒科技有限公司 | Short-process treatment technology for hot rolling turbid circulating water |
-
2019
- 2019-04-19 CN CN201910318245.1A patent/CN111825293A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006212569A (en) * | 2005-02-04 | 2006-08-17 | Nippon Steel Corp | Slurry concentrating method |
| CN101417843A (en) * | 2008-11-21 | 2009-04-29 | 韶关市雅鲁环保实业有限公司 | Secondary cooling water recycling process of steel plant continuous casting |
| CN102557385A (en) * | 2012-02-08 | 2012-07-11 | 韶关市雅鲁环保实业有限公司 | Treatment process of sludge from turbid circulating system of steel enterprise hot rolling factory |
| CN102730919A (en) * | 2012-06-20 | 2012-10-17 | 内蒙古包钢钢联股份有限公司 | Method for processing sludge in steel rolling direct cooling recirculated cooling water system |
| CN104261609A (en) * | 2014-10-10 | 2015-01-07 | 重庆钢铁股份有限公司 | Continuous casting turbid circulating water treatment system and technology |
| CN105776662A (en) * | 2016-04-14 | 2016-07-20 | 北京绿恒科技有限公司 | Short-process treatment technology for hot rolling turbid circulating water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103823418A (en) | PLC control system for urban sewage treatment plants | |
| CN206289131U (en) | A kind of sewage treatment control system based on PLC | |
| CN108558063A (en) | Chemical enterprise concentration organic wastewater disposal process and system | |
| CN105366850A (en) | Electronic coagulation process and facility for coal-bearing wastewater | |
| CN202881049U (en) | Buried type sewage treatment device | |
| CN111807662A (en) | Continuous flow modularization mud storage pool with online concentration function | |
| CN102491598B (en) | Sewage disposal system | |
| CN206769017U (en) | A kind of hole pumping system with precipitation function | |
| CN203474555U (en) | Rainwater collecting and processing system | |
| CN104609635B (en) | A kind of movable type well-flushing Waste Water Treatment | |
| CN202369475U (en) | Sewage treatment system | |
| CN211998979U (en) | Full-automatic intelligent sewage treatment system | |
| CN112794505A (en) | Electric furnace short-flow steel plant water treatment and wastewater zero discharge process | |
| CN202390268U (en) | In-situ reuse treatment system for downhole directional drilling machine medium circulation water | |
| CN208327610U (en) | Coal gasification ash water recycling reutilization system | |
| CN111825293A (en) | Sludge-water separation process for cyclone tank of steel mill | |
| CN216005591U (en) | Equipment for preparing fine gypsum from wet desulfurization sludge | |
| CN212770244U (en) | Grit material waste water processing system | |
| CN202482182U (en) | Sludge processing system and sewage and sludge processing system | |
| CN205241438U (en) | Contain coal waste water electron flocculation facility | |
| CN209481423U (en) | A kind of urban sewage treatment system based on PLC | |
| CN209797634U (en) | High-efficient water purification system | |
| CN204385027U (en) | A kind of SBR water treatment device | |
| CN204873983U (en) | Filter equipment backwash water processing system | |
| CN209052501U (en) | Vacuum pump circulating water cooling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201027 |
|
| WD01 | Invention patent application deemed withdrawn after publication |