CN208120914U - A kind of stable processing system of electroplating wastewater zero - Google Patents
A kind of stable processing system of electroplating wastewater zero Download PDFInfo
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- CN208120914U CN208120914U CN201820231144.1U CN201820231144U CN208120914U CN 208120914 U CN208120914 U CN 208120914U CN 201820231144 U CN201820231144 U CN 201820231144U CN 208120914 U CN208120914 U CN 208120914U
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- infiltration system
- infiltration
- evaporation
- electroplating wastewater
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- 239000002351 wastewater Substances 0.000 title claims abstract description 19
- 238000009713 electroplating Methods 0.000 title claims abstract description 12
- 238000001764 infiltration Methods 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000001704 evaporation Methods 0.000 claims abstract description 33
- 230000008020 evaporation Effects 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 18
- 238000011084 recovery Methods 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 11
- 238000001556 precipitation Methods 0.000 claims abstract description 9
- 239000012528 membrane Substances 0.000 claims abstract description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 238000001223 reverse osmosis Methods 0.000 claims description 7
- UIIMBOGNXHQVGW-UHFFFAOYSA-M sodium bicarbonate Substances [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 2
- 235000021050 feed intake Nutrition 0.000 claims 1
- 238000010025 steaming Methods 0.000 claims 1
- 239000010802 sludge Substances 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 description 4
- 208000028659 discharge Diseases 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000007781 pre-processing Methods 0.000 description 3
- 241001656951 Protheca Species 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010801 sewage sludge Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to a kind of electroplating wastewater zeros to stablize processing system,Including sequentially connected pretreatment unit,Membrane treatment appts and evaporation process system,The pretreatment unit includes neutralization precipitation pond,Two charging devices are arranged in the neutralization precipitation pond,The membrane treatment appts include sequentially connected resin softening plant,First counter-infiltration system,Second counter-infiltration system and third counter-infiltration system,First counter-infiltration system,The pressure rating of second counter-infiltration system and third counter-infiltration system is respectively 1.7-1.9MPa,2.9-3.1MPa,6.4-6.6MPa,The concentrated water outlet of the feed inlet connection third counter-infiltration system of the evaporation process system,The evaporation process system includes evaporation tank,Vapour-recovery unit is set above the evaporation tank,The high-temperature steam of collection passes through heating coil heating evaporation pond.The utility model can lifting waste water reclamation rate, reduce concentrated water evaporation capacity, reduce the moisture content of sludge, whole system stable operation can be made.
Description
Technical field
The present invention relates to environmental technology field, especially a kind of electroplating wastewater zero stablizes processing system.
Background technique
Electroplating wastewater processing project, process route are generally " pretreatment-film process-evaporation and concentration processing ", existing processing
System can really realize zero discharge treatment almost without.Conventional processing systems or the production water rate of recovery are lower, generally 70% ~
80%, remaining concentrated water whole evaporation process causes operating cost very high；The system production water rate of recovery is high, and reachable 80% ~ 90%,
But system does not remove the specific aim means of hardness, causes film processing system and the fouling risk of evaporation and concentration processing system big,
Cleaning frequently, increases labor intensity, shortens equipment life.
Summary of the invention
The purpose of the present invention is being improved and being innovated for disadvantage present in background technique and problem, a kind of band is provided
Have except hardness device, electroplating wastewater zero with long service life stablize processing system.
The technical scheme is that constructing a kind of stable processing system of electroplating wastewater zero, including sequentially connected pre-
Processing unit, membrane treatment appts and evaporation process system, the pretreatment unit include neutralization precipitation pond, the neutralization precipitation
Two charging devices are arranged in pond, and the membrane treatment appts include sequentially connected resin softening plant, the first counter-infiltration system, the
Two counter-infiltration systems and third counter-infiltration system, the discharge outlet of the water inlet connection pretreatment unit of the resin softening plant,
The water outlet of the water inlet connection resin softening plant of first counter-infiltration system, the water inlet of second counter-infiltration system
The concentrated water outlet of the first counter-infiltration system is connected, the concentrated water that the water inlet of third counter-infiltration system connects the second counter-infiltration system goes out
Mouthful, the pressure rating of first counter-infiltration system, the second counter-infiltration system and third counter-infiltration system is respectively 1.7-
1.9MPa, 2.9-3.1MPa, 6.4-6.6MPa, the concentrated water of the feed inlet connection third counter-infiltration system of the evaporation process system
Outlet, the evaporation process system includes evaporation tank, and vapour-recovery unit is arranged above the evaporation tank.
Erosion resistant coating is respectively set in two charging device inner walls in one of the embodiments, respectively correspond NaOH and
NaHCO3Anti-corrosion.
First counter-infiltration system, the second counter-infiltration system and the reverse osmosis system of third in one of the embodiments,
The pressure rating of system is respectively 1.8MPa, 3.0MPa, 6.5MPa.
Heating coil is set on the outside of the evaporation tank in one of the embodiments, and the import of the heating coil connects
The vapour-recovery unit is connect, so that the high-temperature steam that vapour-recovery unit is collected passes through heating coil.
The advantages of the present invention：The present invention, can be by waste water hardness by " Dual alkali " in preprocessing process
50ppm is reduced to hereinafter, even to 20ppm or less；In membrane treatment appts system, it is additionally arranged resin softening plant, by waste water
In hardness handle to almost without, it is ensured that the operation steady in a long-term of subsequent high-recovery film device and evaporation concentration system；It adopts
The counter-infiltration system of three kinds of different pressure levels is taken to improve the rate of recovery.Using pressure rating be followed successively by 1.8MPa, 3.0MPa,
The counter-infiltration system of 6.5MPa, the water inlet of rear enclosure counter-infiltration system are the reverse osmosis concentrated water of protheca, reduce the amount of concentrated water to the greatest extent, drop
The water load of low evaporation process system reduces operating cost；To Treatment of Sludge and evaporate mother liquid disposal innovative design drying
Process flow moisture percentage in sewage sludge can be greatly reduced using residual steam；Moisture content can be stablized 60% or even 50% or less.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to the disclosure.
It should be noted that when element be considered as " setting " on the other element, it can be directly setting or company
Connect on the other element or may be simultaneously present centering elements.
Unless otherwise defined, the skill of all technical and scientific terms and technical field of the invention used herein
The normally understood meaning of art personnel is identical.Term used in the description is intended merely to describe specifically to implement purpose, is not
It is intended to limit the present invention.
Embodiment
As shown in Figure 1, a kind of electroplating wastewater zero stablizes processing system, including sequentially connected pretreatment unit 1, film
Processing unit 2 and evaporation process system 3, the pretreatment unit 1 include neutralization precipitation pond 11, and the neutralization precipitation pond 11 is set
Two charging devices 12 are set, the membrane treatment appts 2 include sequentially connected resin softening plant 21, the first counter-infiltration system
22, the second counter-infiltration system 23 and third counter-infiltration system 24, the water inlet connection pretreatment dress of the resin softening plant 21
1 discharge outlet is set, the water outlet of the water inlet connection resin softening plant 21 of first counter-infiltration system 22, described second is anti-
The water inlet of osmosis system 23 connects the concentrated water outlet of the first counter-infiltration system 22, the water inlet connection of third counter-infiltration system 24
The concentrated water of second counter-infiltration system 23 exports, and first counter-infiltration system 22, the second counter-infiltration system 23 and third are reverse osmosis
The pressure rating of system 24 is respectively 1.8MPa, 3.0MPa, 6.5MPa, and the feed inlet of the evaporation process system 3 connects third
The concentrated water of counter-infiltration system 24 exports, and the evaporation process system 3 includes evaporation tank 31, and 31 top of evaporation tank is arranged in
Vapour-recovery unit 32, is arranged heating coil 33 on the outside of the evaporation tank 31, described in the import connection of the heating coil 33
Vapour-recovery unit 32, so that the high-temperature steam that vapour-recovery unit 32 is collected passes through heating coil 33.
More preferably, erosion resistant coating is respectively set in two charging devices, 12 inner wall, respectively corresponds NaOH and NaHCO3It is anti-
It is rotten.
In the above-described embodiments, rigidity detection device can also be arranged in the pretreatment unit, including protrudes into neutralization and sink
Detection probe inside the pond of shallow lake, and the output device near neutralization precipitation pond is arranged in by monitor mounting bracket（It is aobvious
Display screen etc.）, make operator that the hardness of water body can be monitored in real time, quickly echo the proportion for adjusting double alkali neutralization materials.
The present invention can reach following beneficial effect：
One, the measure of double reduction waste water hardness is taken.1, in preprocessing process, pH value is adjusted using " Dual alkali ",
NaOH and NaHCO are added simultaneously3, when hardness is 120ppm, the dosage of NaHCO3 is about 100ppm, after Dual alkali,
The hardness of waste water can be stabilized under 50ppm, and 20ppm or less can be stabilized to when having run.2, in membrane treatment appts system,
Be additionally arranged resin softening plant, by the hardness in waste water handle to almost without, it is ensured that subsequent high-recovery film device and evaporation
The operation steady in a long-term of concentration systems.
Two, the counter-infiltration system of three kinds of different pressure levels is taken to improve the rate of recovery.It is followed successively by using pressure rating
The counter-infiltration system of 1.8MPa, 3.0MPa, 6.5MPa, the water inlet of rear enclosure counter-infiltration system are the reverse osmosis concentrated water of protheca, as far as possible
The amount of concentrated water is reduced, the water load of evaporation process system is reduced, reduces operating cost.
Three, the process flow dry to Treatment of Sludge and evaporation mother liquid disposal innovative design using residual steam can be big
Width reduces moisture percentage in sewage sludge；Moisture content can be stablized 60% or even 50% or less.
Compared with conventional system, the present invention can lifting waste water reclamation rate, reduce concentrated water evaporation capacity, reduce the aqueous of sludge
Rate can make whole system stable operation.
Embodiment of the present invention is only the description carried out to the preferred embodiment of the present invention, not to the present invention
Conception and scope is defined, and under the premise of not departing from design philosophy of the present invention, engineers and technicians are to this hair in this field
The all variations and modifications that bright technical solution is made should all fall into protection scope of the present invention, the claimed skill of the present invention
Art content, is all described in the claims.
Claims (4)
1. a kind of electroplating wastewater zero stablizes processing system, it is characterised in that：At sequentially connected pretreatment unit, film
It manages device and evaporation process system, the pretreatment unit includes neutralization precipitation pond, two throwings are arranged in the neutralization precipitation pond
Expect device, the membrane treatment appts include sequentially connected resin softening plant, the first counter-infiltration system, the second counter-infiltration system
With third counter-infiltration system, the discharge outlet of the water inlet connection pretreatment unit of the resin softening plant, first reverse osmosis
The water outlet of the water inlet connection resin softening plant of permeable system, the water inlet of second counter-infiltration system connect the first reverse osmosis
The concentrated water of permeable system exports, and the concentrated water that the water inlet of third counter-infiltration system connects the second counter-infiltration system exports, and described first
The pressure rating of counter-infiltration system, the second counter-infiltration system and third counter-infiltration system is respectively 1.7-1.9MPa, 2.9-
3.1MPa, 6.4-6.6MPa, the concentrated water outlet of the feed inlet connection third counter-infiltration system of the evaporation process system, the steaming
Sending out processing system includes evaporation tank, and vapour-recovery unit is arranged above the evaporation tank.
2. electroplating wastewater zero according to claim 1 stablizes processing system, it is characterised in that：Described two dresses that feed intake
It sets inner wall and erosion resistant coating is respectively set, respectively correspond NaOH and NaHCO3Anti-corrosion.
3. electroplating wastewater zero according to claim 1 stablizes processing system, it is characterised in that：First reverse osmosis
The pressure rating of permeable system, the second counter-infiltration system and third counter-infiltration system is respectively 1.8MPa, 3.0MPa, 6.5MPa.
4. electroplating wastewater zero according to claim 1 stablizes processing system, it is characterised in that：Outside the evaporation tank
Heating coil is arranged in side, and the import of the heating coil connects the vapour-recovery unit, so that vapour-recovery unit was collected
High-temperature steam passes through heating coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820231144.1U CN208120914U (en) | 2018-02-09 | 2018-02-09 | A kind of stable processing system of electroplating wastewater zero |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820231144.1U CN208120914U (en) | 2018-02-09 | 2018-02-09 | A kind of stable processing system of electroplating wastewater zero |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208120914U true CN208120914U (en) | 2018-11-20 |
Family
ID=64207543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820231144.1U Active CN208120914U (en) | 2018-02-09 | 2018-02-09 | A kind of stable processing system of electroplating wastewater zero |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208120914U (en) |
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2018
- 2018-02-09 CN CN201820231144.1U patent/CN208120914U/en active Active
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Address after: 610021 22nd Floor, Block A, China Resources Plaza, Section 5, Second Ring Road East, Chengdu, Sichuan Province Patentee after: Sichuan Demai Environmental Technology Group Co.,Ltd. Country or region after: China Address before: 610021 22nd Floor, Block A, China Resources Plaza, Section 5, Second Ring Road East, Chengdu, Sichuan Province Patentee before: SICHUAN DEMAI ENVIRONMENTAL PROTECTION ENGINEERING CO.,LTD. Country or region before: China |