CN107050937A - A kind of processing system and processing method in coal chemical industry Heisui River - Google Patents
A kind of processing system and processing method in coal chemical industry Heisui River Download PDFInfo
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- CN107050937A CN107050937A CN201710242464.7A CN201710242464A CN107050937A CN 107050937 A CN107050937 A CN 107050937A CN 201710242464 A CN201710242464 A CN 201710242464A CN 107050937 A CN107050937 A CN 107050937A
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- suspension media
- chemical industry
- heisui river
- coal chemical
- filter
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
-
- 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
-
- 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
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to a kind of processing system and processing method in coal chemical industry Heisui River, the processing system includes：Gas-liquid separation device, for the coal chemical industry Heisui River for adding flocculant to be removed into gas, obtains the first processing water；Suspension media filter, for the first processing water to be retained by suspension media, suspension media Electrostatic Absorption and gravitational settling, suspension media filter is built with suspension media, clear liquid is obtained on the top of suspension media filter, coal ash particle thing concentrate is obtained in the bottom of suspension media filter.The processing system and processing method in coal chemical industry Heisui River provided by the present invention are compared with traditional sedimentation, and disposal ability is improved, and floor space reduces, and treatment effect is improved, and continuously-running, the low expense of operation energy consumption is few, without changing suspension media and Chemical cleaning.
Description
Technical field
The invention belongs to water-treatment technology field, the processing system in more particularly to a kind of coal chemical industry Heisui River and processing side
Method.
Background technology
In coal chemical industry, one waste water can be produced during industrial chemicals is produced by raw material of coal --- Heisui River,
The waste water contains a certain amount of suspension, mainly based on coal ash.At present, for this strand of waste water, the place generally used in industry
Science and engineering skill is exactly sedimentation process.The principle of the technique is gravity natural subsidence.Therefore the treatment effect of process equipment is with processing pair
As the residence time in equipment is relevant with settlement performance, equipment is taken up an area big, and the residence time is long.Filtered at present by Heisui River
Suspension afterwards is substantially all in more than 100mg/L, although can return tower spray, but still can cause shower nozzle and line clogging.
Filter, it is necessary to design a kind of Heisui River that can adapt between factors above and improve disposal ability and the technique of effect
Reduce the blockage problem of emerged in operation.
The content of the invention
There is provided a kind of processing system in coal chemical industry Heisui River for technological deficiency of the invention for prior art described above presence
System and processing method, compared with traditional sedimentation, disposal ability is improved, and floor space reduces, and treatment effect is improved, and can continuously be transported
OK, the low expense of operation energy consumption is few, without changing suspension media and Chemical cleaning.
The present invention is achieved by the following technical solutions：
A kind of processing system in coal chemical industry Heisui River, including：
Gas-liquid separation device, for the coal chemical industry Heisui River for adding flocculant to be removed into gas, obtains the first processing water；
Suspension media filter, for by first processing water retained by suspension media, suspension media Electrostatic Absorption and
Gravitational settling, suspension media filter obtains clear liquid built with suspension media on the top of suspension media filter, outstanding
The bottom of floating medium filter device obtains coal ash particle thing concentrate.
With suspension media filter processing coal chemical industry Heisui River：Coal chemical industry Heisui River passes through weight in suspension media filter
Power is settled, filtering retention, and after Electrostatic Absorption, clear liquid rises to suspension media filter top, and coal ash particle thing deposits to outstanding
Floating medium filter device bottom.
Preferably, the processing system also includes flocculant chemicals dosing plant and coal chemical industry Heisui River introducing device, the flocculation
Agent chemicals dosing plant is used for flocculant concentration in the introducing device of coal chemical industry Heisui River, obtains adding the coal chemical industry Heisui River of flocculant.
It is highly preferred that coal chemical industry Heisui River introducing device is coal chemical industry Heisui River storage pool or coal chemical industry Heisui River delivery pipe
Road.
Preferably, one or more in also including the following features：
1) bottom of suspension media filter is divided into taper, for settling coal ash particle thing；
2) suspension media is the spherical particles that polyethylene and/or polypropylene are synthesized；
3) processing system also includes clean solution tank, the clear liquid for storing suspension media filter overflow；
4) processing system also includes concentrating liquid pool, and the concentrating liquid pool is connected with suspension media filter；
5) processing system also includes equipment for separating liquid from solid, for the concentrate in concentrating liquid pool to be carried out into solid-liquid point
From obtaining coal ash particle thing, the equipment for separating liquid from solid is connected with concentrating liquid pool.
At least one of it is highly preferred that in also including the following features：
1) feature 2) in, the suspension media is the polyethylene of two-stage distribution up and down and/or the spheroid of polypropylene synthesis
Grain, the suspension media particle diameter of higher level's distribution is 1~2mm, and such as 1~1.5mm or 1.5~2mm, density is 0.05~0.1g/cm3,
Such as 0.05~0.06g/cm3, 0.06~0.08g/cm3Or 0.08~0.1g/cm3, packed height is 0.2~0.4 meter, such as 0.2~
0.25 meter, 0.25~0.3 meter, 0.3~0.35 meter or 0.35~0.4 meter；The suspension media particle diameter of subordinate's distribution is 2~4mm, such as
2~2.5mm, 2.5~2.8mm, 2.8~3mm, 3~3.3mm or 3.3~4mm, density are 0.2~0.4g/cm3, such as 0.2~
0.25g/cm3, 0.25~0.28g/cm3, 0.28~0.3g/cm3, 0.3~0.32g/cm3, 0.32~0.34g/cm3Or 0.34~
0.4g/cm3, packed height is 0.2~0.4 meter, such as 0.2~0.3 meter, 0.3~0.35 or 0.35~0.4 meter；
2) feature 5) in, the equipment for separating liquid from solid is plate and frame filter press.
A kind of processing method in coal chemical industry Heisui River, comprises the following steps：
1) the coal chemical industry Heisui River for adding flocculant is subjected to gas-liquid separation, obtains the first processing water；Isolate coal chemical industry black
The a small amount of air carried in water；
2) by first processing water by suspension media filter, retained through suspension media, suspension media Electrostatic Absorption and
Gravitational settling, clear liquid is obtained on the top of suspension media filter, and coal ash is obtained in the bottom of suspension media filter
Grain thing concentrate.
Larger particle first passes through gravitational settling and sinks to suspension media filter bottom cone in coal chemical industry Heisui River, remaining
Suspension up flows with coal chemical industry Heisui River, is suspended filtering medium layer retention and forms cake layer in filter medium bottom, when
Cake layer thickeies, and coal ash particle can then come off from cake layer sinks to bottom cone, and last coal chemical industry Heisui River is situated between by suspension filter
Colloid substances are by filter medium Electrostatic Absorption during matter layer, so that obtain clear solution enters clean solution tank through the overflow of filter top.
Preferably, one or more in also including the following features：
1) suspension media is the polyethylene of two-stage distribution up and down and/or the spherical particles of polypropylene synthesis, upper fraction
The suspension media particle diameter of cloth is 1~2mm, such as 1~1.5mm or 1.5~2mm, and density is 0.05~0.1g/cm3, such as 0.05~
0.06g/cm3, 0.06~0.08g/cm3Or 0.08~0.1g/cm3, packed height be 0.2~0.4 meter, such as 0.2~0.25 meter,
0.25~0.3 meter, 0.3~0.35 meter or 0.35~0.4 meter；The suspension media particle diameter of subordinate's distribution is 2~4mm, such as 2~
2.5mm, 2.5~2.8mm, 2.8~3mm, 3~3.3mm or 3.3~4mm, density are 0.2~0.4g/cm3, such as 0.2~
0.25g/cm3, 0.25~0.28g/cm3, 0.28~0.3g/cm3, 0.3~0.32g/cm3, 0.32~0.34g/cm3Or 0.34~
0.4g/cm3, packed height is 0.2~0.4 meter, such as 0.2~0.3 meter, 0.3~0.35 or 0.35~0.4 meter；
2) in step 1) also include before：Flocculant is added into coal chemical industry Heisui River；
3) by step 2) discharge of obtained coal ash particle thing concentrate, and separation of solid and liquid is carried out, obtain coal ash particle thing.
It is highly preferred that the flocculant be selected from polyacrylamide, polyaluminium sulfate, aluminium polychloride, bodied ferric sulfate and
One or more in poly-ferric chloride.
It is highly preferred that as concentration of suspension >=1000mg/L in coal chemical industry Heisui River, flocculant is polyaluminium sulfate, polymerization
One kind and polyacrylamide in aluminium chloride, bodied ferric sulfate and poly-ferric chloride；As coal chemical industry Heisui River concentration of suspension ＜
During 1000mg/L, flocculant is one kind in polyaluminium sulfate, aluminium polychloride, bodied ferric sulfate and poly-ferric chloride.
The dosage of polyacrylamide is 1~3ppm, such as 1~1.5ppm, 1.5~2ppm, 2~2.5ppm or 2.5~
3ppm。
A kind of dosage in polyaluminium sulfate, aluminium polychloride, bodied ferric sulfate and poly-ferric chloride is 10-30ppm,
Such as 10-15ppm, 15-25ppm or 25-30ppm.
Even more preferably, the flocculant is polyaluminium sulfate, aluminium polychloride, bodied ferric sulfate and polyaluminium
One kind and polyacrylamide in iron, further it is highly preferred that polyaluminium sulfate, aluminium polychloride, bodied ferric sulfate and poly-
The mass ratio for closing a kind of and polyacrylamide in iron chloride is 10~30：1, such as 10~15：1st, 15~25：1 or 25~30：1.
It is highly preferred that feature 3) in, the bottom of the suspension media filter is divided into taper, when filter base sludge
When being highly more than 2/3rds of cone height, by step 2) discharge of obtained coal ash particle thing concentrate.
Even more preferably, as more than 2/3rds of filter bottom centrum sludge accumulation height vertebral height,
Backwashed simultaneously using the stillness of night：1.5~2m is discharged in 10~15 seconds3Concentrate.
The present invention at least includes at least one in following beneficial effect：
1) of the invention compared with traditional sedimentation, disposal ability is improved, and floor space reduces, and treatment effect is improved；
2) suspension media filter running surface load can reach 5~6m3/m2.h, handle out aqueous suspension≤
30mg/L；
2) continuously-running of the present invention, spoil disposal recoils without termination of pumping, and the low expense of operation energy consumption is few, without changing suspension media
And Chemical cleaning；
3) removal efficiency of the invention is high and stably, and strong shock resistance, effluent quality will not be by influent quality ripple
Dynamic influence；
4) suspension media filtration method and the comparison of traditional sedimentation, suspension media filtration method floor space is smaller, when stopping
Between shorter and better processing effect.
Brief description of the drawings
Fig. 1 is that the processing system in the coal chemical industry Heisui River of the present invention is unified.
Fig. 2 is the processing system two in the coal chemical industry Heisui River of the present invention.
Reference：
1- gas-liquid separation devices；
2- suspension media filters；
3- flocculant chemicals dosing plants；
41- coal chemical industries Heisui River storage pool；42- coal chemical industries Heisui River conveyance conduit；
5- clean solution tanks；
6- concentrating liquid pools；
7- equipment for separating liquid from solid.
Embodiment
Illustrate technical scheme below by way of specific instantiation.It should be understood that the present invention mention one or
Multiple method and steps, which do not repel before and after the combination step, also has other method step or the step specifically mentioned at these
Other method step can also be inserted between rapid；It should also be understood that these embodiments are merely to illustrate the present invention rather than limitation
The scope of the present invention.Moreover, unless otherwise indicated, the numbering of various method steps is only the convenient tool for differentiating various method steps,
Rather than ordering or restriction enforceable scope of the invention, the change of its relativeness or tune for limitation various method steps
It is whole, in the case of without essence change technology contents, when being also considered as enforceable category of the invention.
With reference to specific embodiment, the present invention will be further described：
Embodiment 1
Heisui River 4800m is discharged with Jiangsu man coal chemical industry production process3/ d, main suspension is coal ash particle thing, is suspended
Thing concentration 5000-12000mg/L, average 8000mg/L.
Processing system is as shown in figure 1, the processing system includes gas-liquid separation device 1, suspension media filter 2, wadding
Solidifying agent chemicals dosing plant 3, coal chemical industry Heisui River storage pool 41, clean solution tank 5, concentrating liquid pool 6 and equipment for separating liquid from solid 7, suspension media mistake
The bottom of filter device is divided into taper, and the Heisui River gravity flow of coal chemical industry process units discharge enters gas-liquid separation device 1, enters gas-liquid separation
Flocculant is added to coal chemical industry Heisui River storage pool 41 before device 1, then gravity flow enters in gas-liquid separation device 1, and clear liquid is from gas-liquid
The top overflow of separator 1 enters clean solution tank 5, and the bottom cone of concentrate from suspension media filter 2 is expelled to concentrate
Pond 6, be then fed into equipment for separating liquid from solid 7 such as plate and frame filter press carry out press filtration, a diameter of 3300mm of suspension media filter,
Suspension media is the spherical particles of the polypropylene synthesis of two-stage distribution up and down, and separate unit disposal ability is 40m3/ h, has been served as totally by 5
Filter bottom centrum sludge accumulation height vertebral height more than 2/3rds when, by the coal ash particle thing concentrate of concentrating liquid pool
Discharge, and separation of solid and liquid is carried out, coal ash particle thing is obtained, meanwhile, backwashed using the stillness of night：1.5 are discharged in 10~15 seconds
~2m3Concentrate.
The suspension media that suspension media filter is used is as follows：
Field measurement data are as follows：
Embodiment 2
With Henan man Ammonia Production factory coal chemical industry production process discharge Heisui River 1000m3/ d, main suspension is coal ash
Particulate matter, concentration of suspension 400-800mg/L, average 600mg/L.
Processing system is as shown in Fig. 2 the processing system includes gas-liquid separation device 1, suspension media filter 2, wadding
Solidifying agent chemicals dosing plant 3, coal chemical industry Heisui River conveyance conduit 42, clean solution tank 5, concentrating liquid pool 6 and equipment for separating liquid from solid 7, suspension media
The bottom of filter is divided into taper, and the Heisui River gravity flow of coal chemical industry process units discharge enters gas-liquid separation device 1, enters gas-liquid point
From flocculant is added to coal chemical industry Heisui River conveyance conduit 42 before device 1, then gravity flow enter gas-liquid separation device 1 in, clear liquid from
The top overflow of gas-liquid separation device 1 enters clean solution tank 5, and the bottom cone of concentrate from suspension media filter 2 is expelled to dense
Contracting liquid pool 6, be then fed into equipment for separating liquid from solid 7 such as plate and frame filter press carry out press filtration, suspension media filter it is a diameter of
3300mm, suspension media is the spherical particles of the polypropylene synthesis of two-stage distribution up and down, and separate unit disposal ability is 50m3/ h, totally 1
Platform, as more than 2/3rds of filter bottom centrum sludge accumulation height vertebral height, by the coal ash particle of concentrating liquid pool
Thing concentrate is discharged, and carries out separation of solid and liquid, obtains coal ash particle thing, meanwhile, backwashed using the stillness of night：In 10~15 seconds
Discharge 1.5~2m3Concentrate.
The suspension media that suspension media filter is used is as follows：
| Suspension media filter is numbered | F |
| The suspension media average grain diameter (mm) of higher level's distribution | 1.5 |
| Suspension media averag density (the g/cm of higher level's distribution3) | 0.06 |
| The suspension media packed height (m) of higher level's distribution | 0.2 |
| The suspension media average grain diameter (mm) of subordinate's distribution | 3 |
| Suspension media averag density (the g/cm of subordinate's distribution3) | 0.28 |
| The suspension media packed height (m) of subordinate's distribution | 0.3 |
| Floor space (m2) | 14 |
| The effective residence time (h) of waste water | 0.6 |
Field measurement data are as follows：
Claims (10)
1. a kind of processing system in coal chemical industry Heisui River, it is characterised in that including：
Gas-liquid separation device (1), for the coal chemical industry Heisui River for adding flocculant to be removed into gas, obtains the first processing water；
Suspension media filter (2), for the first processing water to be retained by suspension media, suspension media Electrostatic Absorption and again
Power is settled, and suspension media filter (2) obtains clear liquid built with suspension media on the top of suspension media filter (2),
Coal ash particle thing concentrate is obtained in the bottom of suspension media filter (2).
2. processing system as claimed in claim 1, it is characterised in that the processing system also includes flocculant chemicals dosing plant
(3) and coal chemical industry Heisui River introducing device, the flocculant chemicals dosing plant (3) is used to introduce flocculant concentration in coal chemical industry Heisui River
In device, obtain adding the coal chemical industry Heisui River of flocculant.
3. processing system as claimed in claim 2, it is characterised in that coal chemical industry Heisui River introducing device is coal chemical industry Heisui River
Storage pool (41) or coal chemical industry Heisui River conveyance conduit (42).
4. processing system as claimed in claim 1, it is characterised in that one or more in also including the following features：
1) bottom of suspension media filter (2) is divided into taper, for settling coal ash particle thing；
2) suspension media is the spherical particles that polyethylene and/or polypropylene are synthesized；
3) processing system also includes clean solution tank (5), the clear liquid for storing suspension media filter overflow；
4) processing system also includes concentrating liquid pool (6), and the concentrating liquid pool is connected with suspension media filter (2)；
5) processing system also includes equipment for separating liquid from solid (7), for the concentrate in concentrating liquid pool (6) to be carried out into solid-liquid point
From obtaining coal ash particle thing, the equipment for separating liquid from solid (7) connects with concentrating liquid pool (6).
At least one of 5. processing system as claimed in claim 4, it is characterised in that in also including the following features：
1) feature 2) in, the spherical particles that the suspension media synthesizes for the polyethylene and/or polypropylene of two-stage distribution up and down, on
The suspension media particle diameter of level distribution is 1~2mm, and density is 0.05~0.1g/cm3, packed height is 0.2~0.4 meter；Lower fraction
The suspension media particle diameter of cloth is 2~4mm, and density is 0.2~0.4g/cm3, packed height is 0.2~0.4 meter；
2) feature 5) in, the equipment for separating liquid from solid is plate and frame filter press.
6. a kind of processing method in coal chemical industry Heisui River, it is characterised in that comprise the following steps：
1) the coal chemical industry Heisui River for adding flocculant is subjected to gas-liquid separation, obtains the first processing water；
2) by the first processing water by suspension media filter, retained through suspension media, suspension media Electrostatic Absorption and gravity
Sedimentation, obtains clear liquid on the top of suspension media filter, coal ash particle thing is obtained in the bottom of suspension media filter
Concentrate.
7. processing method according to claim 6, it is characterised in that one or more in also including the following features：
1) spherical particles that the suspension media synthesizes for the polyethylene and/or polypropylene of two-stage distribution up and down, higher level's distribution
Suspension media particle diameter is 1~2mm, and density is 0.05~0.1g/cm3, packed height is 0.2~0.4 meter, and specific surface area is 3000
~5000m2/m3；The suspension media particle diameter of subordinate's distribution is 2~4mm, and density is 0.2~0.4g/cm3, packed height be 0.2~
0.4 meter, specific surface area is 2000~3000m2/m3；
2) in step 1) also include before：Flocculant is added into coal chemical industry Heisui River；
3) by step 2) discharge of obtained coal ash particle thing concentrate, and separation of solid and liquid is carried out, obtain coal ash particle thing.
8. processing method according to claim 7, it is characterised in that feature 2) in, the flocculant is selected from polyacrylamide
One or more in amine, polyaluminium sulfate, aluminium polychloride, bodied ferric sulfate and poly-ferric chloride.
9. processing method according to claim 7, it is characterised in that feature 3) in, the suspension media filter
Bottom is divided into taper, when filter base sludge is highly more than 2/3rds of cone height, by step 2) obtained coal
Ash particle thing concentrate is discharged.
10. processing method according to claim 9, it is characterised in that when filter bottom centrum sludge accumulation height vertebra
Body height more than 2/3rds when, while being backwashed using the stillness of night：1.5~2m is discharged in 10~15 seconds3Concentrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710242464.7A CN107050937A (en) | 2017-04-13 | 2017-04-13 | A kind of processing system and processing method in coal chemical industry Heisui River |
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| CN201710242464.7A CN107050937A (en) | 2017-04-13 | 2017-04-13 | A kind of processing system and processing method in coal chemical industry Heisui River |
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| CN107050937A true CN107050937A (en) | 2017-08-18 |
Family
ID=59599555
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| CN201710242464.7A Pending CN107050937A (en) | 2017-04-13 | 2017-04-13 | A kind of processing system and processing method in coal chemical industry Heisui River |
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Application publication date: 20170818 |