CN109205828A - A kind of method of sulfate-containing wastewater conductivity in reduction carbon white production process - Google Patents
A kind of method of sulfate-containing wastewater conductivity in reduction carbon white production process Download PDFInfo
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- CN109205828A CN109205828A CN201811036714.2A CN201811036714A CN109205828A CN 109205828 A CN109205828 A CN 109205828A CN 201811036714 A CN201811036714 A CN 201811036714A CN 109205828 A CN109205828 A CN 109205828A
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- Prior art keywords
- conductivity
- filters pressing
- pipeline
- sulfate
- pressing mother
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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
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
-
- 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
-
- 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
- C02F2209/05—Conductivity or salinity
Abstract
The invention belongs to white carbon black industrial wastewater processing technology fields, more particularly to a kind of method of sulfate-containing wastewater conductivity in reduction carbon white production process, including press filteration system, the press filteration system includes filter press, filter press draws pipeline one and pipeline two in parallel by outlet tube, the online electric conductivity detector one of installation in the outlet tube, pipeline one are connected to filters pressing mother liquor sedimentation basin, and pipeline two is connected to cesspool；Filters pressing mother liquid disposal pond is connected to the alkali slot equipped with soda ash.The present invention has the advantage that treated that sulfate-containing wastewater conductivity substantially reduces through method in the present invention compared with prior art, environment is polluted after discharge can effectively be avoided, associated apparatus structure is scientific and reasonable, realize the recycling of low conductivity washing water, aqueous sodium sulfate crystal is handled gained metabisulfite solution after supercentrifuge is handled again simultaneously, realize circular treatment, operating cost is low, is suitable for promoting the use of.
Description
Technical field
The invention belongs to white carbon black industrial wastewater processing technology fields, and in particular in a kind of reduction carbon white production process
The method of sulfate-containing wastewater conductivity.
Background technique
White carbon black (hydrated SiO 2) is used as a kind of good rubber reinforcing filler, currently on the market high-temperature silicon disulfide rubber
The precipitation method are mostly used to prepare with white carbon black, traditional precipitated silica preparation process is using waterglass (Na2O·mSiO2) and
Sulfuric acid is raw material preparation；Traditional precipitated silica preparation process be after synthesis be 18-25% solid content suspension
Liquid, suspension, suspension is filtered, washed by filter press, slurrying forms white carbon black underflow material, finally by dry, packaging shape
At white carbon black finished product；Being filtered, washed the stage in filter press needs a large amount of tap water to wash the intermediate products of containing sulfate
It washs, for reducing white carbon black filter cake conductivity, about discharges the high conductivity waste water of 2500-3000 tons of containing sulfates daily, it is unfavorable
In environmental protection, the average conductivity of the high conductivity waste water of containing sulfate is 12000 μ s/cm, mainly by filtering and washing two
A stage generates, and the high conductivity conductivity of waste water of the especially containing sulfate of filtration stage generation is up to 20000 μ s/cm or more,
Therefore the production phase is also the main reason for conductivity of waste water is high, and the high conductivity waste water of containing sulfate is needed by controlling at present
Reason could discharge after being reduced to 5000 μ s/cm, and how to reduce the conductivity of the high conductivity waste water of containing sulfate is to be badly in need of solving
Major issue.
Summary of the invention
The purpose of the present invention is high for a large amount of sulfate generated during precipitated silica are prepared using conventional method
Conductivity wastewater problem provides a kind of method for reducing sulfate-containing wastewater conductivity in carbon white production process.
The present invention is achieved by the following technical solutions: sulfate-containing wastewater electricity in a kind of reduction carbon white production process
The method of conductance, including the following contents:
It (1) include press filteration system, the press filteration system includes filter press, and filter press passes through among filling tube and white carbon black suspension
Slot connection, filter press are connected to originally sink by water inlet pipe, and filter press draws pipeline one and pipeline two in parallel by outlet tube,
The online electric conductivity detector one of installation in the outlet tube, pipeline one are connected to filters pressing mother liquor sedimentation basin, and pipeline two is connected to cesspool,
The pipeline one is equipped with solenoid valve one, and pipeline two is equipped with solenoid valve two；
(2) filters pressing mother liquid disposal pond is connected to the alkali slot equipped with soda ash, alkali pump is equipped in alkali slot, alkali pump is used for will be pure
Alkali imports filters pressing mother liquid disposal pond, and online electric conductivity detector two and pH detection dress are equipped in filters pressing mother liquid disposal pond
It sets；
Default conductivity one is set, is gradually added lye in filters pressing mother liquid disposal pond, until being mixed in filters pressing mother liquid disposal pond
After the pH value of liquid is 7-9, conductivity is lower than default conductivity one simultaneously, stop that lye is added；
(3) filters pressing mother liquid disposal pond connects centrifugal type atomizer, and centrifugal type atomizer connects cooling tower, and the cooling tower connects
Connect kiln exhaust duct and moisture discharge pipe；The centrifugal spraying machine is connect with loading head；
After mixed liquor is sufficiently reacted with lye in filters pressing mother liquid disposal pond, gained reaction solution imports centrifugal spraying machine, warp
After the processing of centrifugal spraying machine, aqueous sodium sulfate crystal and water mist is obtained, aqueous sodium sulfate crystal is imported into loading head, it will
Water mist imports in cooling tower, and with high temperature kiln tail gas contact drying, the vapor evaporated is discharged by moisture discharge pipe；
(4) loading head connects supercentrifuge, and aqueous sodium sulfate crystal imports supercentrifuge in loading head, through high speed
The low aqueous sodium persulfate and metabisulfite solution that are separated after centrifuge processing, collect low aqueous sodium persulfate, while by metabisulfite solution
Filters pressing mother liquid disposal pond is reintroduced back to be handled again；
(5) automatic control unit is set, and online electric conductivity detector one, online electric conductivity detector two and pH detection device are examined
It surveys signal and is passed to automatic control unit, automatic control unit is electrically connected solenoid valve one, solenoid valve two, alkali pump.
As further improvement of these options, white carbon black in process of production, in white carbon black suspension medial launder
White carbon black suspension imports filter press by filling tube, and the high conductivity waste water of the containing sulfate being discharged after filtering is filters pressing mother liquor；
It rinses to obtain washing water by the tap water that water inlet pipe accesses after material feeding；
Gained filters pressing mother liquor successively passes through outlet tube and pipeline one imports filters pressing mother liquor sedimentation basin；Start to use after rinsing with ruinning water
Washing water detects real-time conductivity through online electric conductivity detector one, and automatic control unit passes through real-time conductivity and default conductance
Rate two compares the working condition of control solenoid valve one and solenoid valve two.
As further improvement of these options, the default conductivity two is 3000 μ s/cm.
As further improvement of these options, the automatic control unit controls real-time conductivity and is higher than default conductance
When rate, solenoid valve one is disconnected, and solenoid valve two is closed, and washing water enters filters pressing mother liquor sedimentation basin by pipeline one at this time；When real-time
When conductivity is less than or equal to default conductivity, solenoid valve one is closed, and solenoid valve two disconnects, and washing water passes through outlet tube, pipe at this time
Road two enters cesspool.
As further improvement of these options, washing water is connected to originally sink in the cesspool, is re-used for rushing
It washes.
As further improvement of these options, the default conductivity one is 5000 μ s/cm.
As further improvement of these options, the water content of the low aqueous sodium persulfate is 5-7%.
As further improvement of these options, the temperature of the high temperature kiln tail gas is greater than 150 DEG C.
Filter press at work, according to white carbon black different product specification material feeding 20-30 minutes, is then shut off material feeding pump and note
Expect valve, switch to washing system, be rinsed with tap water, the washing water that first 10 minutes generate will be washed and be also introduced into filters pressing mother
The filters pressing mother liquor that liquid processing pond and shot process generate is handled together, and with the extension of wash time, washing water conductivity is reduced
Obviously, being collected in after cesspool after mixing again with tap water can be re-used for rinsing.
The present invention is had the advantage that compared with prior art through treated the sulfate-containing wastewater conductance of method in the present invention
Rate substantially reduces, and pollutes environment after capable of effectively avoiding discharge, can generate good social benefit and environmental benefit, make enterprise
Due contribution；Associated apparatus structure is scientific and reasonable, realizes the recycling of low conductivity washing water, while by aqueous sulphur
Sour sodium crystal is handled gained metabisulfite solution after supercentrifuge is handled again, realizes circular treatment, and operating cost is low, is fitted
In popularization and use.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
The following further describes the present invention with reference to the drawings.
As shown in fig. 1, a method of reducing sulfate-containing wastewater conductivity in carbon white production process, including following
Content:
It (1) include press filteration system, the press filteration system includes filter press 1, and filter press 1 passes through filling tube 12 and white carbon black suspension
Medial launder 2 is connected to, and filter press 1 is connected to originally sink 3 by water inlet pipe 13, and filter press 1 draws pipe in parallel by outlet tube 11
Road 1 and pipeline 2 14, the interior online electric conductivity detector 1 of installation of the outlet tube 11, pipeline 1 are connected to filters pressing mother liquor
Sedimentation basin 5, pipeline 2 14 are connected to cesspool 4, and the pipeline 1 is equipped with solenoid valve 1, and pipeline 2 14 is equipped with solenoid valve
2 17；
(2) filters pressing mother liquid disposal pond 5 is connected to the alkali slot 6 equipped with soda ash, and alkali pump 19, alkali pump 19 are equipped in alkali slot 6
For soda ash to be imported filters pressing mother liquid disposal pond 5, online electric conductivity detector 2 21 is installed in filters pressing mother liquid disposal pond 5
With pH detection device 22；
Default conductivity one is set, is gradually added lye in filters pressing mother liquid disposal pond 5, until being mixed in filters pressing mother liquid disposal pond 5
After the pH value for closing liquid is 7-9, conductivity is lower than default conductivity one simultaneously, stop that lye is added；
(3) filters pressing mother liquid disposal pond 5 connects centrifugal type atomizer 7, and centrifugal type atomizer 7 connects cooling tower 8, the cooling
Tower 8 connects kiln exhaust duct 24 and moisture discharge pipe 23；The centrifugal spraying machine 7 is connect with loading head 9；
After mixed liquor is sufficiently reacted with lye in filters pressing mother liquid disposal pond 5, gained reaction solution imports centrifugal spraying machine 7,
After the processing of centrifugal spraying machine 7, aqueous sodium sulfate crystal and water mist is obtained, aqueous sodium sulfate crystal is imported into loading head
9, water mist is imported in cooling tower 8, with high temperature kiln tail gas contact drying, the vapor evaporated passes through moisture discharge pipe
23 discharges；
(4) loading head 9 connects supercentrifuge 10, and aqueous sodium sulfate crystal imports supercentrifuge 10 in loading head 9,
The low aqueous sodium persulfate and metabisulfite solution that are separated after the processing of supercentrifuge 10, collect low aqueous sodium persulfate, while by sulphur
Acid sodium solution is reintroduced back to filters pressing mother liquid disposal pond 5 and is handled again；
(5) automatic control unit, online electric conductivity detector 1, online electric conductivity detector 2 21 and pH detection device are set
22 detected signals are passed to automatic control unit, and automatic control unit is electrically connected solenoid valve 1, solenoid valve 2 17, alkali pump
19。
Wherein, in process of production, the white carbon black suspension in white carbon black suspension medial launder 2 passes through filling tube to white carbon black
12 import filter press 1, and the high conductivity waste water of the containing sulfate being discharged after filtering is filters pressing mother liquor；Pass through water inlet pipe after material feeding
The tap water of 13 accesses rinses to obtain washing water；
Gained filters pressing mother liquor successively passes through outlet tube 11 and pipeline 1 imports filters pressing mother liquor sedimentation basin 5；Start to be rushed with tap water
Washing water after washing detects real-time conductivity through online electric conductivity detector 1, automatic control unit by real-time conductivity and
Default 2 3000 μ s/cm of conductivity compares the working condition of control solenoid valve 1 and solenoid valve 2 17；
When the automatic control unit controls real-time conductivity higher than default conductivity, solenoid valve 1 is disconnected, solenoid valve 2 17
Closure, washing water enters filters pressing mother liquor sedimentation basin 5 by pipeline 1 at this time；When real-time conductivity is less than or equal to default conductivity
When, solenoid valve 1 is closed, and solenoid valve 2 17 disconnects, and washing water enters cesspool by outlet tube 11, pipeline 2 14 at this time.
Wherein, the default conductivity one is 5000 μ s/cm；The water content of the low aqueous sodium persulfate is 5-7%；The height
The temperature of warm kiln tail gas is greater than 150 DEG C.
Filter press 1 at work, according to white carbon black different product specification material feeding 20-30 minutes, be then shut off material feeding pump and
Material feeding valve, switches to washing system, is rinsed with tap water, will wash the washing water that first 10 minutes generate and is also introduced into filters pressing
The filters pressing mother liquor that mother liquid disposal pond 5 and shot process generate is handled together, with the extension of wash time, washs water conductivity
Reduce obvious, being collected in after cesspool 4 after mixing again with tap water can be re-used for rinsing.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of method for reducing sulfate-containing wastewater conductivity in carbon white production process, which is characterized in that including following interior
Hold:
It (1) include press filteration system, the press filteration system includes filter press, and filter press passes through among filling tube and white carbon black suspension
Slot connection, filter press are connected to originally sink by water inlet pipe, and filter press draws pipeline one and pipeline two in parallel by outlet tube,
The online electric conductivity detector one of installation in the outlet tube, pipeline one are connected to filters pressing mother liquor sedimentation basin, and pipeline two is connected to cesspool,
The pipeline one is equipped with solenoid valve one, and pipeline two is equipped with solenoid valve two；
(2) filters pressing mother liquid disposal pond is connected to the alkali slot equipped with soda ash, alkali pump is equipped in alkali slot, alkali pump is used for will be pure
Alkali imports filters pressing mother liquid disposal pond, and online electric conductivity detector two and pH detection dress are equipped in filters pressing mother liquid disposal pond
It sets；
Default conductivity one is set, is gradually added lye in filters pressing mother liquid disposal pond, until being mixed in filters pressing mother liquid disposal pond
After the pH value of liquid is 7-9, conductivity is lower than default conductivity one simultaneously, stop that lye is added；
(3) filters pressing mother liquid disposal pond connects centrifugal type atomizer, and centrifugal type atomizer connects cooling tower, and the cooling tower connects
Connect kiln exhaust duct and moisture discharge pipe；The centrifugal spraying machine is connect with loading head；
After mixed liquor is sufficiently reacted with lye in filters pressing mother liquid disposal pond, gained reaction solution imports centrifugal spraying machine, warp
After the processing of centrifugal spraying machine, aqueous sodium sulfate crystal and water mist is obtained, aqueous sodium sulfate crystal is imported into loading head, it will
Water mist imports in cooling tower, and with high temperature kiln tail gas contact drying, the vapor evaporated is discharged by moisture discharge pipe；
(4) loading head connects supercentrifuge, and aqueous sodium sulfate crystal imports supercentrifuge in loading head, through high speed
The low aqueous sodium persulfate and metabisulfite solution that are separated after centrifuge processing, collect low aqueous sodium persulfate, while by metabisulfite solution
Filters pressing mother liquid disposal pond is reintroduced back to be handled again；
(5) automatic control unit is set, and online electric conductivity detector one, online electric conductivity detector two and pH detection device are examined
It surveys signal and is passed to automatic control unit, automatic control unit is electrically connected solenoid valve one, solenoid valve two, alkali pump.
2. a kind of method for reducing sulfate-containing wastewater conductivity in carbon white production process as described in claim 1, feature
It is, in process of production, the white carbon black suspension in white carbon black suspension medial launder imports filters pressing by filling tube to white carbon black
Machine, the high conductivity waste water of the containing sulfate being discharged after filtering are filters pressing mother liquor；After material feeding originally by water inlet pipe access
Water rinses to obtain washing water；
Gained filters pressing mother liquor successively passes through outlet tube and pipeline one imports filters pressing mother liquor sedimentation basin；Start to use after rinsing with ruinning water
Washing water detects real-time conductivity through online electric conductivity detector one, and automatic control unit passes through real-time conductivity and default conductance
Rate two compares the working condition of control solenoid valve one and solenoid valve two.
3. a kind of method for reducing sulfate-containing wastewater conductivity in carbon white production process as claimed in claim 2, feature
It is, the default conductivity two is 3000 μ s/cm.
4. a kind of method for reducing sulfate-containing wastewater conductivity in carbon white production process as claimed in claim 3, feature
It is, when the automatic control unit controls real-time conductivity higher than default conductivity, solenoid valve one is disconnected, and solenoid valve two closes
It closes, washing water enters filters pressing mother liquor sedimentation basin by pipeline one at this time；When real-time conductivity is less than or equal to default conductivity, electricity
Magnet valve one is closed, and solenoid valve two disconnects, and washing water enters cesspool by outlet tube, pipeline two at this time.
5. a kind of method for reducing sulfate-containing wastewater conductivity in carbon white production process as claimed in claim 4, feature
It is, washing water is connected to originally sink in the cesspool, is re-used for rinsing.
6. a kind of method for reducing sulfate-containing wastewater conductivity in carbon white production process as described in claim 1, feature
It is, the default conductivity one is 5000 μ s/cm.
7. a kind of method for reducing sulfate-containing wastewater conductivity in carbon white production process as described in claim 1, feature
It is, the water content of the low aqueous sodium persulfate is 5-7%.
8. a kind of method for reducing sulfate-containing wastewater conductivity in carbon white production process as described in claim 1, feature
It is, the temperature of the high temperature kiln tail gas is greater than 150 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811036714.2A CN109205828B (en) | 2018-09-06 | 2018-09-06 | Method for reducing conductivity of sulfate-containing wastewater in white carbon black production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811036714.2A CN109205828B (en) | 2018-09-06 | 2018-09-06 | Method for reducing conductivity of sulfate-containing wastewater in white carbon black production process |
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| Publication Number | Publication Date |
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| CN109205828A true CN109205828A (en) | 2019-01-15 |
| CN109205828B CN109205828B (en) | 2021-11-19 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009041456A1 (en) * | 2009-09-12 | 2011-03-24 | K-Utec Ag Salt Technologies | Producing high percentage potassium chloride from polymineralic, magnesium sulfate rich crude potassium salt or from crude salt fraction obtained during dry treatment of crude salt, comprises hot dissolution-cold crystallization process |
| CN202876465U (en) * | 2012-10-29 | 2013-04-17 | 无锡恒诚硅业有限公司 | Filter press washing water recycling system for white carbon black production |
| CN103539281A (en) * | 2013-02-05 | 2014-01-29 | 金能科技股份有限公司 | White carbon black production wastewater treatment technology |
| CN108358369A (en) * | 2018-03-09 | 2018-08-03 | 江苏中圣高科技产业有限公司 | A kind of brine waste is concentrated by evaporation mother liquor and divides salt treatment process method and device |
| US20180222758A1 (en) * | 2015-07-28 | 2018-08-09 | Rhodia Operations | Process for the recovery of sodium sulfate |
-
2018
- 2018-09-06 CN CN201811036714.2A patent/CN109205828B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009041456A1 (en) * | 2009-09-12 | 2011-03-24 | K-Utec Ag Salt Technologies | Producing high percentage potassium chloride from polymineralic, magnesium sulfate rich crude potassium salt or from crude salt fraction obtained during dry treatment of crude salt, comprises hot dissolution-cold crystallization process |
| CN202876465U (en) * | 2012-10-29 | 2013-04-17 | 无锡恒诚硅业有限公司 | Filter press washing water recycling system for white carbon black production |
| CN103539281A (en) * | 2013-02-05 | 2014-01-29 | 金能科技股份有限公司 | White carbon black production wastewater treatment technology |
| US20180222758A1 (en) * | 2015-07-28 | 2018-08-09 | Rhodia Operations | Process for the recovery of sodium sulfate |
| CN108358369A (en) * | 2018-03-09 | 2018-08-03 | 江苏中圣高科技产业有限公司 | A kind of brine waste is concentrated by evaporation mother liquor and divides salt treatment process method and device |
Non-Patent Citations (1)
| Title |
|---|
| 贡长生: "《现代工业化学》", 31 August 1999, 湖北科学技术出版社 * |
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