CN105967484A - Sludge deep dehydration method for processing flue gas desulfurization wastewater sludge - Google Patents
Sludge deep dehydration method for processing flue gas desulfurization wastewater sludge Download PDFInfo
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- CN105967484A CN105967484A CN201511009243.2A CN201511009243A CN105967484A CN 105967484 A CN105967484 A CN 105967484A CN 201511009243 A CN201511009243 A CN 201511009243A CN 105967484 A CN105967484 A CN 105967484A
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- sludge
- mud
- flue gas
- gas desulfurization
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a sludge deep dehydration method for processing flue gas desulfurization wastewater sludge. The method comprises the following steps: 1) flue gas desulfurization wastewater sludge is primarily conditioned to the sludge with water content of 90%-97% by a water-adding method for dilution or a concentration method; 2) the sludge with water content of 90%-97% obtained in the step 1) is added in a sludge conditioner; and 3) powdery polyferric sulfate with adding amount being 0.02-0.2% (metered by dry material weight) is added, wherein the addition time is more than 5 minutes. The dehydration method has the following advantages: 1) operation is simple, equipment is less, large-scale equipment is not required, good treatment effect can be achieved by only grasping the simple addition method; 2) aluminum salt and iron salt are mixed, usage of a polymeric flocculant is greatly reduced, and the processing cost is reduced; and 3) the combustion heat value of the dried sludge is less reduced.
Description
Technical field
A kind of method that the present invention relates to deeply dehydrating sludge processing flue gas desulfurization waste-water mud, belongs to the technical field of Treatment of Sludge.
Background technology
In wet desulphurization waste water, suspension content is relatively big, wherein mainly contains the hydroxide of gypsum particle, SiO2, Al and Fe.Desulfurization wastewater mud mainly contains limestone, hydroxide precipitate, calcium precipitation thing, and mud has salinity height, is difficult to the characteristics such as dehydration.
Sludge conditioning main purpose is to improve the dewatering of mud, improves mechanical dehydration ability and the production efficiency of mechanical dewatering equipment.
Aluminum system salt and ferrum system salt are used in mixed way by this method, can neutralize the negative charge of mud, with the use of high polymer coagulant (cationic PAM), by bridging effect by many particle aggregations together, the moisture of release mud, make mud be more suitable for mechanism filter-pressing.If change occurs in order of addition of ingredients, the Tower Bridge effect of PAM can be caused significantly to weaken, the substitute is charging neutrality effect, reduce the property of medicine of PAM.
The most domestic Treatment of Sludge many uses high polymer coagulant polyacrylamide (0.3%DS) conditioning produced for this type of waste water, carries out filter-press dehydration the most again, but dehydrated sludge moisture content remains unchanged higher, about at 70%-80%.It is difficult to reach the standard (CJT249-2007) of the sanitary landfills of national regulation.Mud after the process of current this method does not the most possess the condition of the follow-up disposal of mud.
Summary of the invention
Goal of the invention: it is an object of the invention to provide a kind of dewatering improving mud, the method improving the deeply dehydrating sludge processing flue gas desulfurization waste-water mud of the production efficiency of mechanical dehydration ability and mechanical dewatering equipment
Technical scheme: the method for the deeply dehydrating sludge of process flue gas desulfurization waste-water mud of the present invention, comprises the following steps:
1) flue gas desulfurization waste-water mud is tentatively nursed one's health the mud into moisture content 90%-97% by the method for dilute or concentration；
2) by step 1) mud of moisture content 90%-97% that obtains adds in sludge conditioning pond；
3) powdered polymeric iron sulfate, dosage 0.02%-0.2% (in terms of over dry thing), more than administration timing of drug 5min are added；
4) adding powdered polymeric aluminum chloride, dosage is than 0.04%-0.4% (in terms of over dry thing), more than administration timing of drug 5min；
5) add the liquid polypropylene amide configured, add mass ratio 0.001%-0.01% (in terms of over dry thing), more than administration timing of drug 5min.
6) by step 5) mud that obtains with pumping in filter press, board and frame machine feed time 40min-120min, operating pressure 0.1Mpa-0.5Mpa；
7) board and frame machine secondary pressurized is carried out, persistent period 10min-40min, operating pressure 0.8Mpa-1.4Mpa；
8) filter plate is unclamped, removal mud cake；
9) filter plate, filter cloth are cleaned.
Further, in described step 1)～5) while, the continuously stirred described sludge conditioning pond of blender.
Further, in described step 5) afterwards with step 6) front further comprising the steps of: keep conditioner continue stirring half an hour more than.
Liquid polypropylene amide in further, it is characterised in that step 5) is polyacrylamide solution.
The present invention is a kind of method of deeply dehydrating sludge processing flue gas desulfurization waste-water mud, the method i.e. using the sludge conditioner fitted in by high polymer coagulant, bodied ferric sulfate and aluminium polychlorid that flue gas desulfurization waste-water mud is carried out deep dehydration, belongs to field of sludge treatment.The present invention includes two steps: 1, sludge conditioning；2, sludge dewatering.Moisture percentage in sewage sludge after treatment below 60%, slightly do air-dry process, moisture content can near less than 50%, the beneficially follow-up disposal of mud.
Step: sludge conditioning process: 1. in sewage sludge storage pond or concentration basin, the flue gas desulfurization waste-water mud of certain moisture content is tentatively nursed one's health the mud into moisture content 90%-97% by the method for dilute or concentration.The mud of moisture content 90%-97% is pumped in mud dosing conditioner, full to pond；2. powdered polymeric iron sulfate, dosage 0.02%-0.2% (in terms of over dry thing), more than administration timing of drug 5min are added；3. adding powdered polymeric aluminum chloride (liquid being configured to valid density 30% adds), dosage is than 0.04%-0.4% (in terms of over dry thing), more than administration timing of drug 5min；5. add the liquid polypropylene amide (cation) configured, add mass ratio 0.001%-0.01% (in terms of over dry thing), more than administration timing of drug 5min.
Sludge dehydration process: 1. conditioned mud screw pump is pumped in filter press, board and frame machine feed time 40min-120min, operating pressure 0.1Mpa-0.5Mpa.2. board and frame machine secondary pressurized, persistent period 10min-40min, operating pressure 0.8Mpa-1.4Mpa are carried out.3. filter plate, removal mud cake are unclamped.4. filter plate, filter cloth are cleaned.
The common method for sludge treatment in this area is difficult to reach the requirement of concerned countries standard.Inventor gropes through the most substantial amounts of experiment, finds for the requirement reaching concerned countries standard, it is necessary to meet especially in sludge dehydration process following what time: during the most whole conditioning dosing, blender cannot be shut down；2. enter after mud dosing worked, conditioner need to be kept to continue more than stirring half an hour；3. the process that adds of polyacrylamide (cation) slowly, uniformly should need to be configured to liquid preparation and add；4. order of addition of ingredients need to be carried out by as above step, can not change order of addition of ingredients.When 5. carrying out secondary pressurized, pressure should be at more than 0.8Mpa.
Compared with prior art, it provides the benefit that the present invention: the most simple to operate, equipment is less, and the method is without main equipment, and only need to grasp simple adding method thereof can obtain preferable treatment effect.2. aluminum system salt and ferrum system salt are used in mixed way, the use of high polymer coagulant can be reduced in a large number, reduce processing cost.3. the combustion heat value of dewatered sludge declines less.
Accompanying drawing explanation
Fig. 1 is the method flow schematic diagram of the deeply dehydrating sludge of process flue gas desulfurization waste-water mud of the present invention.
Detailed description of the invention
Below technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
Embodiment 1:
For the experiment of flue gas desulfurization waste-water sludge conditioning, we choose the desulfurization wastewater mud product of Taizhou state electricity is experimental raw, and filtering equipment is the pressure filter that Zhejiang Longyuan Filter Press Co., Ltd. produces
1. the Sludge from primary sedimentation tank taking moisture content 93.4% pumps into conditioner, opens blender.2. medicament bodied ferric sulfate, dosage 0.04%, administration timing of drug 5min are added.3. medicament aluminium polychlorid, dosage 0.04%, administration timing of drug 5min are added.4. medicament polyacrylamide (cation) (being configured to 0.3% solution add), dosage 0.002%, administration timing of drug 5min are added.5. stirring conditioning 30min is continued.6. by screw pump, the mud mixed up is injected in filter press, feed pressure 0.2Mpa, feed time 60min, after having fed, air compressor machine secondary pressurized to 1.1Mpa, pressurize 20min, sloughs the moisture in mud.7. after secondary pressurized terminates, venting, unclamp filter plate, discharging also cleans filter plate, filter cloth.
Dehydrated sludge moisture content is 53.56%, meets and processes requirement.
Embodiment 2:
Use equipment is with embodiment 1.1. the Sludge from primary sedimentation tank taking moisture content 93.4% pumps into conditioner, opens blender.2. medicament bodied ferric sulfate, dosage 0.04%, administration timing of drug 5min are added.3. medicament aluminium polychlorid, dosage 0.04%, administration timing of drug 5min are added.4. medicament polyacrylamide (cation) (being configured to 0.3% solution add), dosage 0.002%, administration timing of drug 5min are added.5. stirring conditioning 30min is continued.6. by screw pump, the mud mixed up is injected in filter press, feed pressure 0.2Mpa, feed time 60min, after having fed, air compressor machine secondary pressurized to 0.8Mpa, pressurize 20min, sloughs the moisture in mud.7. after secondary pressurized terminates, venting, unclamp filter plate, discharging also cleans filter plate, filter cloth.
Dehydrated sludge moisture content is 57.85%, meets and processes requirement.
Embodiment 3:
Use equipment is with embodiment 1.1. the Sludge from primary sedimentation tank taking moisture content 93.4% pumps into conditioner, opens blender.2. medicament bodied ferric sulfate, dosage 0.02%, administration timing of drug 5min are added.3. medicament aluminium polychlorid, dosage 0.02%, administration timing of drug 5min are added.4. medicament polyacrylamide (cation) (being configured to 0.3% solution add), dosage 0.002%, administration timing of drug 5min are added.5. stirring conditioning 30min is continued.6. by screw pump, the mud mixed up is injected in filter press, feed pressure 0.2Mpa, feed time 60min, after having fed, air compressor machine secondary pressurized to 0.8Mpa, pressurize 20min, sloughs the moisture in mud.7. after secondary pressurized terminates, venting, unclamp filter plate, discharging also cleans filter plate, filter cloth.
Dehydrated sludge moisture content is 58.62%, meets and processes requirement.
Embodiment 4:
Use equipment is with embodiment 1.1. the Sludge from primary sedimentation tank taking moisture content 93.4% pumps into conditioner, opens blender.2. medicament polyacrylamide (cation) (being configured to 0.3% solution add), dosage 0.002%, administration timing of drug 5min are added.3. medicament bodied ferric sulfate, dosage 0.04%, administration timing of drug 5min are added.4. medicament aluminium polychlorid, dosage 0.04%, administration timing of drug 5min are added.5. stirring conditioning 30min is continued.6. by screw pump, the mud mixed up is injected in filter press, feed pressure 0.2Mpa, feed time 60min, after having fed, air compressor machine secondary pressurized to 1.1Mpa, pressurize 20min, sloughs the moisture in mud.7. after secondary pressurized terminates, venting, unclamp filter plate, discharging also cleans filter plate, filter cloth.
Dehydrated sludge moisture content is 63.73%, is unsatisfactory for processing requirement in the case of changing order of addition of ingredients.
Embodiment 5:
Use equipment is with embodiment 1.1. the Sludge from primary sedimentation tank taking moisture content 93.4% pumps into conditioner, opens blender.2. medicament polyacrylamide (cation) (being configured to 0.3% solution add), dosage 0.002%, administration timing of drug 5min are added.3. stirring conditioning 30min is continued.4. by screw pump, the mud mixed up is injected in filter press, feed pressure 0.2Mpa, feed time 60min, after having fed, air compressor machine secondary pressurized to 1.1Mpa, pressurize 20min, sloughs the moisture in mud.5. after secondary pressurized terminates, venting, unclamp filter plate, discharging also cleans filter plate, filter cloth.
Dehydrated sludge moisture content is 66.99%, and routine adds polyacrylamide can not meet process requirement.
Embodiment 6:
The other the same as in Example 1, but during conditioning dosing, blender is shut down；
Result: dehydrated sludge moisture content is 64.23%
Embodiment 7:
Other are with embodiment 1, but do not carry out step: 5. continue stirring conditioning 30min
Result: dehydrated sludge moisture content is 70.68%
Embodiment 8:
Other are with embodiment 1, but polyacrylamide uses solid chemicals method to add；
Result: dehydrated sludge moisture content is 63.62%
Embodiment 9:
Other are with embodiment 1, and when carrying out secondary pressurized, pressure maintains 0.7Mpa；
Result: dehydrated sludge moisture content is 62.50%
In sum, the technical know-how during the present invention passes through the repetition test exploration discovery deeply dehydrating sludge not being known so that the mud after dehydration meets related request.
Although as it has been described above, represented and described the present invention with reference to specific preferred embodiment, but it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention premise defined without departing from claims, can various changes can be made in the form and details to it.
Claims (4)
1. the method for the deeply dehydrating sludge processing flue gas desulfurization waste-water mud, it is characterised in that include
Following steps:
1) flue gas desulfurization waste-water mud is tentatively nursed one's health as moisture content by the method for dilute or concentration
The mud of 90%-97%；
2) by step 1) mud of moisture content 90%-97% that obtains adds in sludge conditioning pond, adds polymerised sulphur
Acid ferrum, aluminium polychlorid and polyacrylamide, stirring reaction more than 5min.
3) such as step 2) as described in bodied ferric sulfate be powdered polymeric iron sulfate, dosage is according to mud dry mass
Mass fraction 0.02%-0.2% add, dosing response time more than 5min；
4) such as step 2) as described in aluminium polychlorid be powdered polymeric aluminum chloride, dosage is according to mud dry mass
Mass fraction 0.04%-0.4% add, dosing response time more than 5min；
5) such as step 2) as described in polyacrylamide be the liquid polypropylene amide configured, add according to mud do
The mass fraction 0.001%-0.01% of quality adds, dosing response time more than 5min；
6) by step 2) mud that obtains is with pumping in filter press, and board and frame machine feed time keeps
40min-120min, feed pressure keeps 0.1Mpa-0.5Mpa；
7) board and frame machine secondary pressurized is carried out, persistent period 10min-40min, operating pressure 0.8Mpa-1.4Mpa；
8) filter plate is unclamped, removal mud cake, cleans filter plate filter cloth, mud carries out next step and disposes.
The method of the deeply dehydrating sludge of process flue gas desulfurization waste-water mud the most according to claim 1, its
It is characterised by, in described step 1)～5) while, the continuously stirred described sludge conditioning pond of blender.
The method of the deeply dehydrating sludge of process flue gas desulfurization waste-water mud the most according to claim 1, its
Be characterised by, in described step 5) afterwards with step 6) front further comprising the steps of: keep conditioner continue stirring
More than half an hour.
The method of the deeply dehydrating sludge of process flue gas desulfurization waste-water mud the most according to claim 1, its
Be characterised by step 5) in liquid polypropylene amide be polyacrylamide solution.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517599A (en) * | 2016-12-28 | 2017-03-22 | 武汉凯迪电力环保有限公司 | Device and method for desulfurized sludge deep dehydration and heavy metal curing coordinated treatment |
| CN107487826A (en) * | 2017-09-20 | 2017-12-19 | 北京美斯顿科技开发有限公司 | A kind of flue gas desulphurization waste solution processing compound coagulant and its preparation method and application |
| CN109939523A (en) * | 2019-03-28 | 2019-06-28 | 北海市传创环保科技有限公司 | A kind of petrochemical industry VOC gas improvement detection device with cycle detection structure |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11179399A (en) * | 1997-10-13 | 1999-07-06 | 忠幸 ▲吉▼田 | Sludge treating agent and treating method for sludge using it |
| KR20000040934A (en) * | 1998-12-21 | 2000-07-15 | 이구택 | Preliminary treatment in dewatering sludge process |
| CN101050044A (en) * | 2007-05-14 | 2007-10-10 | 庞鹏远 | Method for carrying out advanced treatment on papermaking sewage |
| CN101691272A (en) * | 2009-10-01 | 2010-04-07 | 厦门水务集团有限公司 | Sludge dewatering method |
| CN101704629A (en) * | 2009-09-18 | 2010-05-12 | 东莞玖龙纸业有限公司 | Method for dynamically controlling continuous feeding in dehydration of papermaking sludge |
| CN101973687A (en) * | 2010-10-29 | 2011-02-16 | 广东理文造纸有限公司 | Sludge treatment method |
| CN102603152A (en) * | 2012-03-08 | 2012-07-25 | 佛山市环保技术与装备研发专业中心 | Sludge deep dehydration conditioning agent and application thereof |
| CN102627386A (en) * | 2012-04-10 | 2012-08-08 | 无锡国联环保科技有限公司 | Method for adding conditioner for dehydrating sludge |
| CN103011548A (en) * | 2012-12-27 | 2013-04-03 | 哈尔滨工业大学水资源国家工程研究中心有限公司 | Conditioner for combinedly conditioning sludge and method for dehydrating sludge through utilizing conditioner |
| CN103896474A (en) * | 2014-03-13 | 2014-07-02 | 南京道科环境科技有限公司 | Efficient dehydrating method for sludge |
-
2015
- 2015-12-29 CN CN201511009243.2A patent/CN105967484A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11179399A (en) * | 1997-10-13 | 1999-07-06 | 忠幸 ▲吉▼田 | Sludge treating agent and treating method for sludge using it |
| KR20000040934A (en) * | 1998-12-21 | 2000-07-15 | 이구택 | Preliminary treatment in dewatering sludge process |
| CN101050044A (en) * | 2007-05-14 | 2007-10-10 | 庞鹏远 | Method for carrying out advanced treatment on papermaking sewage |
| CN101704629A (en) * | 2009-09-18 | 2010-05-12 | 东莞玖龙纸业有限公司 | Method for dynamically controlling continuous feeding in dehydration of papermaking sludge |
| CN101691272A (en) * | 2009-10-01 | 2010-04-07 | 厦门水务集团有限公司 | Sludge dewatering method |
| CN101973687A (en) * | 2010-10-29 | 2011-02-16 | 广东理文造纸有限公司 | Sludge treatment method |
| CN102603152A (en) * | 2012-03-08 | 2012-07-25 | 佛山市环保技术与装备研发专业中心 | Sludge deep dehydration conditioning agent and application thereof |
| CN102627386A (en) * | 2012-04-10 | 2012-08-08 | 无锡国联环保科技有限公司 | Method for adding conditioner for dehydrating sludge |
| CN103011548A (en) * | 2012-12-27 | 2013-04-03 | 哈尔滨工业大学水资源国家工程研究中心有限公司 | Conditioner for combinedly conditioning sludge and method for dehydrating sludge through utilizing conditioner |
| CN103896474A (en) * | 2014-03-13 | 2014-07-02 | 南京道科环境科技有限公司 | Efficient dehydrating method for sludge |
Non-Patent Citations (2)
| Title |
|---|
| 李素芹: "《钢铁工业水处理实用技术与应用》", 30 June 2015 * |
| 李艳辉: "《无机及分析化学实验》", 30 September 2006 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517599A (en) * | 2016-12-28 | 2017-03-22 | 武汉凯迪电力环保有限公司 | Device and method for desulfurized sludge deep dehydration and heavy metal curing coordinated treatment |
| CN107487826A (en) * | 2017-09-20 | 2017-12-19 | 北京美斯顿科技开发有限公司 | A kind of flue gas desulphurization waste solution processing compound coagulant and its preparation method and application |
| CN109939523A (en) * | 2019-03-28 | 2019-06-28 | 北海市传创环保科技有限公司 | A kind of petrochemical industry VOC gas improvement detection device with cycle detection structure |
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