CN203602429U - System for separating solid from liquid of electroplating wastewater - Google Patents
System for separating solid from liquid of electroplating wastewater Download PDFInfo
- Publication number
- CN203602429U CN203602429U CN201320690087.0U CN201320690087U CN203602429U CN 203602429 U CN203602429 U CN 203602429U CN 201320690087 U CN201320690087 U CN 201320690087U CN 203602429 U CN203602429 U CN 203602429U
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- Prior art keywords
- water tank
- ceramic membrane
- pump
- outlet
- way valve
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- Expired - Lifetime
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- 238000009713 electroplating Methods 0.000 title claims abstract description 22
- 239000002351 wastewater Substances 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 title claims abstract description 19
- 239000007787 solid Substances 0.000 title abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 238000000926 separation method Methods 0.000 claims abstract description 58
- 239000012528 membrane Substances 0.000 claims abstract description 53
- 239000000919 ceramic Substances 0.000 claims abstract description 48
- 238000001556 precipitation Methods 0.000 claims abstract description 30
- 238000004140 cleaning Methods 0.000 claims abstract description 22
- 239000000126 substance Substances 0.000 claims abstract description 14
- 239000010802 sludge Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 230000008676 import Effects 0.000 claims description 13
- 238000011010 flushing procedure Methods 0.000 claims description 11
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000002516 radical scavenger Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 13
- 229910001385 heavy metal Inorganic materials 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 5
- 238000005189 flocculation Methods 0.000 description 4
- 230000016615 flocculation Effects 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 230000002000 scavenging effect Effects 0.000 description 4
- 238000009388 chemical precipitation Methods 0.000 description 3
- 239000000701 coagulant Substances 0.000 description 3
- 150000002736 metal compounds Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000005374 membrane filtration Methods 0.000 description 2
- 229910000000 metal hydroxide Inorganic materials 0.000 description 2
- 150000004692 metal hydroxides Chemical class 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
Abstract
The utility model discloses a system for separating solid from liquid of electroplating wastewater. The system comprises a chemical pretreatment water tank, a precipitation water tank, a booster pump, a ceramic membrane separating device, a cleaning water pump, a cleaning water tank, a clear water tank, a sludge pump, and a filter press, wherein an outlet of the chemical pretreatment water tank is connected with an inlet of the precipitation water tank, the precipitation water tank, the booster pump and the ceramic membrane separating device are sequentially connected, a concentrated solution outlet of the ceramic membrane separating device is connected with another inlet of the precipitation water tank, a clear water outlet of the ceramic membrane separating device is connected with an inlet of the clear water tank, a sludge discharging hole of the precipitation water tank is connected with the filter press through the sludge pump, and the cleaning water tank, the cleaning water pump and the ceramic membrane separating device are sequentially connected and form a cleaning loop. The system disclosed by the utility model is small in occupation area, and capable of realizing highly self control and improving the solid-liquid separation effect and concentration multiple.
Description
Technical field
The utility model belongs to technology for treating industrial waste water field, is specifically related to a kind of system of electroplating wastewater solid-liquid separation.
Background technology
In electroplating wastewater, contain various heavy composition, conventional treatment process has chemical method, membrane separation technique, ion exchange method and biological process at present.Wherein chemical method and membrane separation technique become the main flow of electroplating wastewater processing.
Chemical precipitation method is one of method the most frequently used in current electroplating wastewater processing, its technical process is: by add chemical reagent in electroplating wastewater, form the best pH of precipitation of hydroxide according to dissimilar metal, regulate waste water ph, form precipitation of hydroxide, and by further dosing coagulant and flocculation agent, the precipitate metal hydroxides of fine particle is formed under the effect of flocculation agent after macrobead suspended solid in settling tank precipitate and separate.Mud-water separation after precipitate metal hydroxides generally adopts settling methods, such as inclined-plate clarifying basin, tube settler etc., due to its load difference, cause this processing workshop section to be taken up an area large, hydraulic detention time is long, processing efficiency is low, and due to adding of coagulating agent and flocculation agent, bring new metal ion into, made the purity drop of heavy metal sewage sludge, reduce recovery value, increased mud handling capacity simultaneously.
Summary of the invention
The purpose of this utility model is for the problems referred to above, provide a kind of can economical and efficient electroplating wastewater is carried out to the system of solid-liquid separation.
The purpose of this utility model can reach by following measures:
A kind of system of electroplating wastewater solid-liquid separation, comprise Chemical Pretreatment water tank 4, precipitation water tank 5, topping-up pump 6, ceramic membrane separation device 7, flushing water pump 9, clean water tank 10, clear water water tank 11, sludge pump 12, pressure filter 13, an import of the outlet of described Chemical Pretreatment water tank 4 and described precipitation water tank 5 is connected, described precipitation water tank 5, topping-up pump 6 is connected successively with ceramic membrane separation device 7, another import of the concentrated solution outlet of described ceramic membrane separation device 7 and described precipitation water tank 5 is connected, the clear water output of ceramic membrane separation device 7 is connected with the import of described clear water water tank 11, the mud discharging mouth of described precipitation water tank 5 be connected with pressure filter 13 through sludge pump 12, described cleaning water tank 10, flushing water pump 9 and described ceramic membrane separation device 7 are connected successively and form a scavenger circuit.
Preferably, this system also comprises dosing tank 2 and dosing pump 1, and described dosing tank 2 is connected with described Chemical Pretreatment water tank 4 through dosing pump 1, controls the consumption of precipitation agent by dosing pump 1.
Preferably, this system also comprises the first 3-way valve 8, the second 3-way valve 3 and the 3rd 3-way valve 14; The import of the outlet of described the first 3-way valve 8 and described ceramic membrane separation device 7 communicates, and entrance of the first 3-way valve 8 and the water outlet of topping-up pump 6 communicate, and the water outlet of another entrance and described flushing water pump 9 communicates; The concentrated solution outlet of the entrance of described the second 3-way valve 3 and described ceramic membrane separation device 7 communicates, and an outlet and the described precipitation water tank 5 of the second 3-way valve 3 communicate, and another outlet and described cleaning water tank 10 communicate; The clear water output of the entrance of described the 3rd 3-way valve 14 and described ceramic membrane separation device 7 communicates, and an outlet and the described clear water water tank 11 of the 3rd 3-way valve 14 communicate, and another outlet and described cleaning water tank 10 communicate.
Preferably, the ceramic membrane of described ceramic membrane separation device is the alumina ceramic membrane of aperture 200nm.
Preferably, described pressure filter is plate-and-frame filter press, and the filter cloth of described plate-and-frame filter press is that aperture is 110 object filter clothes.
While using the utility model to carry out solid-liquid separation to electroplating wastewater, first raw material in pretreatment water tank adds precipitation agent to carry out chemical precipitation containing in the electroplating wastewater of heavy metal, the heavy metal mud mixture obtaining enters ceramic membrane separation device through topping-up pump and filters, obtain respectively clear water and contain the not concentrated solution of dissolved salt of metal, wherein clear water part enters and cleans the water for cleaning of water tank as ceramic membrane separation device, most of clear water enters clear water water tank, concentrated solution mixes with the heavy metal mud mixture through electroplating effluent recycling and using, again enter ceramic membrane separation device and carry out circular treatment, when in concentrated solution when the insoluble salt concn >=20000mg/L of metal, enter board and frame machine from the mud discharging mouth of precipitation water tank through sludge pump and carry out solid-liquid separation, obtain the insoluble salt mud cake of metal, further reclaim and obtain heavy metal.
When after system operation for some time, the Graceful water yield of ceramic membrane separation device be reduced to normal aquifer yield 50% time, ceramic membrane to ceramic membrane separation device cleans, detailed process is: successively using mineral acid and clear water as scavenging solution, scavenging solution in cleaning water tank enters the membrane filtration district of ceramic membrane separation device through flushing water pump, after cleaning, clean waste reflux to cleaning water tank.
Compared to the prior art, the beneficial effects of the utility model:
The utility model is reasonable in design, and hold facility place is little, can realize height automatic control; Apply this device and solved existing installation to the high defect of suspended substance gravity settling performance requriements in waste water, improved effect and the cycles of concentration of solid-liquid separation, do not need dosing coagulant and flocculation agent in solid-liquid separation process, reagent consumption significantly reduces.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In Fig. 1,1-dosing pump, 2-dosing tank, 3-the second 3-way valve, 4-Chemical Pretreatment water tank, 5-precipitates water tank, 6-topping-up pump, 7-ceramic membrane separation device, 8-the first 3-way valve, 9-flushing water pump, 10-cleans water tank, 11-clear water water tank, 12-sludge pump, 13-pressure filter, 14-the 3rd 3-way valve.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, a system for electroplating wastewater solid-liquid separation, comprises dosing pump 1, dosing tank 2, the second 3-way valve 3, Chemical Pretreatment water tank 4, precipitation water tank 5, topping-up pump 6, ceramic membrane separation device 7, the first 3-way valve 8, flushing water pump 9, cleans water tank 10, clear water water tank 11, sludge pump 12, plate-and-frame filter press 13, the 3rd 3-way valve 14; Described dosing tank 2 is connected with described pretreatment water tank 4 through dosing pump 1, controls the consumption of precipitation agent by dosing pump 1; An import of the outlet of described Chemical Pretreatment water tank 4 and described precipitation water tank 5 is connected; The inlet ductwork of described ceramic membrane separation device 7 is provided with the first 3-way valve 8, described precipitation water tank 5, topping-up pump 6 are connected with ceramic membrane separation device 7 successively through an entrance of the first 3-way valve 8, and described cleaning water tank 10, flushing water pump 9 are connected with described ceramic membrane separation device 7 successively through another entrance of the first 3-way valve 8; The concentrated solution outlet place of described ceramic membrane separation device 7 is provided with the second 3-way valve 3, and an outlet of described the second 3-way valve 3 and another import of described precipitation water tank 5 communicate, and the import of another outlet and described cleaning water tank 10 communicates; The clear water output place of described ceramic membrane separation device 7 is provided with the 3rd 3-way valve 14, and an outlet of described the 3rd 3-way valve 14 and the import of described clear water water tank 11 communicate, and the import of another outlet and described cleaning water tank 10 communicates; The mud discharging mouth of described precipitation water tank 5 be connected with plate-and-frame filter press 13 through sludge pump 12.
The ceramic membrane of described ceramic membrane separation device is the alumina ceramic membrane of aperture 200nm.
The filter cloth of described plate-and-frame filter press is that aperture is 110 object filter clothes.
While using the utility model to carry out solid-liquid separation to electroplating wastewater, first raw material in pretreatment water tank adds precipitation agent to carry out chemical precipitation containing in the electroplating wastewater of heavy metal, the mixed solution containing insoluble heavy metal compound obtaining enters ceramic membrane separation device through topping-up pump and filters, obtain respectively clear water and the concentrated solution containing insoluble heavy metal compound, wherein clear water part enters and cleans the water for cleaning of water tank as ceramic membrane separation device, most of clear water enters clear water water tank, concentrated solution mixes with the mixed solution containing insoluble heavy metal compound through electroplating effluent recycling and using, again enter ceramic membrane separation device and carry out circular treatment, when in concentrated solution when the insoluble salt concn >=20000mg/L of metal, enter board and frame machine from the mud discharging mouth of precipitation water tank through sludge pump and carry out solid-liquid separation, obtain the insoluble salt mud cake of metal, further reclaim and obtain heavy metal.
When after system operation for some time, the Graceful water yield of ceramic membrane separation device be reduced to normal aquifer yield 50% time, ceramic membrane to ceramic membrane separation device cleans, detailed process is: successively using mineral acid and clear water as scavenging solution, scavenging solution in cleaning water tank enters the membrane filtration district of ceramic membrane separation device through flushing water pump, after cleaning, clean waste reflux to cleaning water tank.
Claims (5)
1. the system of the solid-liquid separation of an electroplating wastewater, it is characterized in that comprising Chemical Pretreatment water tank (4), precipitation water tank (5), topping-up pump (6), ceramic membrane separation device (7), flushing water pump (9), clean water tank (10), clear water water tank (11), sludge pump (12), pressure filter (13), an import of the outlet of described Chemical Pretreatment water tank (4) and described precipitation water tank (5) is connected, described precipitation water tank (5), topping-up pump (6) is connected successively with ceramic membrane separation device (7), the concentrated solution outlet of described ceramic membrane separation device (7) is connected with another import of described precipitation water tank (5), the clear water output of ceramic membrane separation device (7) is connected with the import of described clear water water tank (11), the mud discharging mouth of described precipitation water tank (5) be connected with pressure filter (13) through sludge pump (12), described cleaning water tank (10), flushing water pump (9) and described ceramic membrane separation device (7) are connected successively and form a scavenger circuit.
2. the system of the solid-liquid separation of electroplating wastewater according to claim 1, it is characterized in that this system also comprises dosing tank (2) and dosing pump (1), described dosing tank (2) is connected with described Chemical Pretreatment water tank (4) through dosing pump (1).
3. the system of the solid-liquid separation of electroplating wastewater according to claim 1, is characterized in that this system also comprises the first 3-way valve (8), the second 3-way valve (3) and the 3rd 3-way valve (14); The import of the outlet of described the first 3-way valve (8) and described ceramic membrane separation device (7) communicates, entrance of the first 3-way valve (8) and the water outlet of topping-up pump (6) communicate, and the water outlet of another entrance and described flushing water pump (9) communicates; The concentrated solution outlet of the entrance of described the second 3-way valve (3) and described ceramic membrane separation device (7) communicates, outlet and the described precipitation water tank (5) of the second 3-way valve (3) communicate, and another outlet and described cleaning water tank (10) communicate; The clear water output of the entrance of described the 3rd 3-way valve (14) and described ceramic membrane separation device (7) communicates, outlet and the described clear water water tank (11) of the 3rd 3-way valve (14) communicate, and another outlet and described cleaning water tank (10) communicate.
4. according to the system of the solid-liquid separation of the electroplating wastewater described in claim 1,2 or 3, the ceramic membrane that it is characterized in that described ceramic membrane separation device is the alumina ceramic membrane of aperture 200nm.
5. according to the system of the solid-liquid separation of the electroplating wastewater described in claim 1,2 or 3, it is characterized in that described pressure filter is plate-and-frame filter press, the filter cloth of described plate-and-frame filter press is that aperture is 110 object filter clothes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690087.0U CN203602429U (en) | 2013-11-04 | 2013-11-04 | System for separating solid from liquid of electroplating wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690087.0U CN203602429U (en) | 2013-11-04 | 2013-11-04 | System for separating solid from liquid of electroplating wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203602429U true CN203602429U (en) | 2014-05-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320690087.0U Expired - Lifetime CN203602429U (en) | 2013-11-04 | 2013-11-04 | System for separating solid from liquid of electroplating wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203602429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153744A1 (en) * | 2018-02-08 | 2019-08-15 | 福建希海环保科技有限公司 | Solid-liquid separation system |
-
2013
- 2013-11-04 CN CN201320690087.0U patent/CN203602429U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153744A1 (en) * | 2018-02-08 | 2019-08-15 | 福建希海环保科技有限公司 | Solid-liquid separation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: System for separating solid from liquid of electroplating wastewater Effective date of registration: 20170922 Granted publication date: 20140521 Pledgee: Bank of Nanjing, Zhujiang branch, Limited by Share Ltd. Pledgor: NANJING SPRING ENVIRONMENTAL SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: 2017990000898 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |
|
| CX01 | Expiry of patent term |