CN102627386A - Method for adding conditioner for dehydrating sludge - Google Patents
Method for adding conditioner for dehydrating sludge Download PDFInfo
- Publication number
- CN102627386A CN102627386A CN2012101026067A CN201210102606A CN102627386A CN 102627386 A CN102627386 A CN 102627386A CN 2012101026067 A CN2012101026067 A CN 2012101026067A CN 201210102606 A CN201210102606 A CN 201210102606A CN 102627386 A CN102627386 A CN 102627386A
- Authority
- CN
- China
- Prior art keywords
- mud
- minutes
- rev
- mins
- sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a method for adding a conditioner for dehydrating sludge, which has high dehydration efficiency and low moisture content of a mud cake. The method comprises the following specific processing steps of: (1) introducing the sludge with the moisture content of 90-98% into a stirring tank or a stirring pool, adding high polymer polymerized ferric salt with a dry mass content of 7-8% of the sludge, quickly stirring at a stirring speed of 200-300 revolutions per minute for 7-10 minutes, and stirring at a slow speed of 80-100 revolutions per minute for 15-20 minutes; (2) adding calcium salt into the sludge subjected to thermal refining in the step (1) so that pH value of the sludge is 8-10, and stirring at a stirring speed of 100-150 revolutions per minute for 5-10 minutes, wherein the calcium salt is a flocculating agent calcium salt; and (3) adding a coagulant aid with a dry mass content of 0.075-0.1% of the sludge into the sludge subjected to thermal refining in the step (2), and stirring at a stirring speed of 60-150 revolutions per minute for 1-2 minutes, wherein the coagulant aid is a high polymer organic flocculating agent.
Description
Technical field
The present invention relates to the technical field of sludge dewatering, be specially a kind of amendment addition means of sludge dewatering.
Background technology
Solid matter in the sludge from wastewater treatment plant mainly is a soil ulmin, and it is made up of hydrophilic electronegative colloidal particle, and is very strong with water avidity; Bigger than resistance, dewatering is poor, brings a lot of problems for processing and disposal; Before mud carries out mechanical dehydration, need to add medicament usually and nurse one's health, for this reason to change mud granule surface properties and component; Destroy the colloidal structure of mud, the avidity of minimizing and water, thus improve dewatering.Existing amendment pH value, amendment compound concentration, mixing condition etc. in the dosing modulation process all can have considerable influence to the floc sedimentation size and the consolidation degree of modulated sludge, thereby influence input speed and press dewatering efficient that mud gets into pressure filter.
Summary of the invention
To the problems referred to above, the invention provides a kind of amendment addition means of sludge dewatering, it makes that input speed was fast when mud after modified got into deeply dehydrating sludge device processes such as diaphragm filter press, dewatering efficiency height and moisture content of the cake are low.
A kind of amendment addition means of sludge dewatering is characterized in that:
Its concrete process step is following:
(1) be that 90% ~ 98% mud is introduced in stirred pot or the agitated pool with water ratio; The high molecular polymerization molysite that adds the solids content 7% ~ 8% of mud; Under 200 rev/mins ~ 300 rev/mins stirring velocity, stirred 7 minutes ~ 10 minutes fast, under 80 rev/mins ~ 100 rev/mins stirring velocity, stirred at a slow speed 15 minutes ~ 20 minutes afterwards;
(2) in the mud after step (1) modifier treatment, add calcium salt, the pH value that makes mud is 8 ~ 10, under 100 rev/mins ~ 150 rev/mins stirring velocity, stirs 5 minutes ~ 10 minutes, and wherein calcium salt is the flocculation agent calcium salt;
(3) coagulant aids of adding mud solids content 0.75 ‰ ~ 1 ‰ in the mud after step (2) modifier treatment stirred 1 minute ~ 2 minutes under 60 rev/mins ~ 150 rev/mins stirring velocity, and wherein said coagulant aids is a macromolecule organic flocculating agent.
It is further characterized in that: the solution that is deployed into 0.3% mass concentration before said macromolecule organic flocculating agent uses.
Adopt of the present invention after, be 8 ~ 10 o'clock at pH value, the Ca in the calcium salt
2+Can impel the oxyhydroxide and the effect of mud granule generation chemical coagulation of iron; The macromolecule organic flocculating agent coagulant aids that mud adds behind chemical coagulation is nursed one's health, and the small flco that forms before making it forms the big and closely knit flco of size under the effect of coagulant aids, filtration velocity is improved; Improve sludge dewatering efficient; Its mud of handling through the present invention is delivered to diaphragm filter press through spiral pump and carries out deeply dehydrating sludge, and behind deep dehydration, the water ratio of mud extraction mud cake is less than 60%; To sum up, make that input speed was fast when mud after modified got into deeply dehydrating sludge device processes such as diaphragm filter press, dewatering efficiency height and moisture content of the cake are low.
Embodiment
Embodiment one:
(1) is that 90% mud is introduced in the agitated pool with water ratio, adds the high molecular polymerization molysite of the solids content 8% of mud, under 200 rev/mins stirring velocity, stirred 30 minutes;
(2) the flocculation agent calcium salt of adding mud solids content 6% in the mud after step (1) modifier treatment stirred 10 minutes under 100 rev/mins stirring velocity;
(3) macromolecule organic flocculating agent of adding mud solids content 0.75 ‰ in the mud after step (2) modifier treatment; Under 60 rev/mins stirring velocity, stirred 2 minutes, be deployed into the solution of 0.3% mass concentration before wherein macromolecule organic flocculating agent uses.
Mud after modifier treatment is delivered to 0.8m * 0.8m diaphragm filter press through spiral pump and carries out deeply dehydrating sludge, and the pressure of diaphragm filter press is greater than 1.5MPa, and behind deep dehydration, the water ratio of mud extraction mud cake is 60%.
Embodiment two:
(1) be that 98% mud is introduced in the stirred pot with water ratio; The high molecular polymerization molysite that adds the solids content 8% of mud; Under 200 ~ 300 rev/mins stirring velocity, stirred 10 minutes fast, stirred at a slow speed under 80 ~ 100 rev/mins the stirring velocity 20 minutes again;
(2) in the mud after step (1) modifier treatment, add the flocculation agent calcium salt, making the pH value is 8 ~ 10, under 100 rev/mins stirring velocity, stirs 10 minutes;
(3) macromolecule organic flocculating agent of adding mud solids content 0.75 ‰ in the mud after step (2) modifier treatment; Under 80 rev/mins stirring velocity, stirred 2 minutes, be deployed into the solution of 0.3% mass concentration before wherein macromolecule organic flocculating agent uses.
Mud after modifier treatment is delivered to 0.8m * 0.8m diaphragm filter press through spiral pump and carries out deeply dehydrating sludge, and the pressure of diaphragm filter press is greater than 1.5MPa, and behind deep dehydration, the water ratio of mud extraction mud cake is 58%.
Embodiment three:
(1) be that 98% mud is introduced in stirred pot or the agitated pool with water ratio; The high molecular polymerization molysite that adds the solids content 8% of mud; Under 200 rev/mins stirring velocity, stirred 10 minutes fast, stirred at a slow speed under 80 rev/mins the stirring velocity 20 minutes again;
(2) in the mud after step (1) modifier treatment, add the flocculation agent calcium salt, making the pH value is 8 ~ 10, under 125 rev/mins stirring velocity, stirs 10 minutes;
(3) macromolecule organic flocculating agent of adding mud solids content 0.75 ‰ in the mud after step (2) modifier treatment; Under 150 rev/mins stirring velocity, stirred 2 minutes, be deployed into the solution of 0.3% mass concentration before wherein macromolecule organic flocculating agent uses.
Mud after modifier treatment is delivered to 0.8m * 0.8m diaphragm filter press through spiral pump and carries out deeply dehydrating sludge, and the pressure of diaphragm filter press is greater than 1.5MPa, and behind deep dehydration, the water ratio of mud extraction mud cake is 57%.
Embodiment four:
(1) be that 95% mud is introduced in stirred pot or the agitated pool with water ratio; The high molecular polymerization molysite that adds the solids content 12% of mud; Under 250 rev/mins stirring velocity, stirred 8 minutes fast, stirred at a slow speed under 100 rev/mins the stirring velocity 15 minutes again;
(2) in the mud after step (1) modifier treatment, add the flocculation agent calcium salt, making the pH value is 8 ~ 10, under 150 rev/mins stirring velocity, stirs 5 minutes;
(3) macromolecule organic flocculating agent of adding mud solids content 0.85 ‰ in the mud after step (2) modifier treatment; Under 100 rev/mins stirring velocity, stirred 1 minute, be deployed into the solution of 0.3% mass concentration before wherein macromolecule organic flocculating agent uses.
Mud after modifier treatment is delivered to 0.8m * 0.8m diaphragm filter press through spiral pump and carries out deeply dehydrating sludge, and the pressure of diaphragm filter press is greater than 1.5MPa, and behind deep dehydration, the water ratio of mud extraction mud cake is 55%.
Embodiment five:
(1) be that 90% mud is introduced in stirred pot or the agitated pool with water ratio; The high molecular polymerization molysite that adds the solids content 7% of mud; Under 300 rev/mins stirring velocity, stirred 7 minutes fast, stirred at a slow speed under 90 rev/mins the stirring velocity 18 minutes again;
(2) in the mud after step (1) modifier treatment, add the flocculation agent calcium salt, making the pH value is 8 ~ 10, under 100 rev/mins stirring velocity, stirs 8 minutes;
(3) macromolecule organic flocculating agent of adding mud solids content 1 ‰ in the mud after step (2) modifier treatment; Under 60 rev/mins stirring velocity, stirred 1.5 minutes, be deployed into the solution of 0.3% mass concentration before wherein macromolecule organic flocculating agent uses.
Mud after modifier treatment is delivered to 0.8m * 0.8m diaphragm filter press through spiral pump and carries out deeply dehydrating sludge, and the pressure of diaphragm filter press is greater than 1.5MPa, and behind deep dehydration, the water ratio of mud extraction mud cake is 58%.
Claims (2)
1. the amendment addition means of a sludge dewatering is characterized in that:
Its concrete process step is following:
(1) be that 90% ~ 98% mud is introduced in stirred pot or the agitated pool with water ratio; The high molecular polymerization molysite that adds the solids content 7% ~ 8% of mud; Under 200 rev/mins ~ 300 rev/mins stirring velocity, stirred 7 minutes ~ 10 minutes fast, under 80 rev/mins ~ 100 rev/mins stirring velocity, stirred at a slow speed 15 minutes ~ 20 minutes afterwards;
(2) in the mud after step (1) modifier treatment, add calcium salt, the pH value that makes mud is 8 ~ 10, under 100 rev/mins ~ 150 rev/mins stirring velocity, stirs 5 minutes ~ 10 minutes, and wherein calcium salt is the flocculation agent calcium salt;
(3) coagulant aids of adding mud solids content 0.75 ‰ ~ 1 ‰ in the mud after step (2) modifier treatment stirred 1 minute ~ 2 minutes under 60 rev/mins ~ 150 rev/mins stirring velocity, and wherein said coagulant aids is a macromolecule organic flocculating agent.
2. the amendment addition means of a kind of sludge dewatering according to claim 1 is characterized in that: the solution that is deployed into 0.3% mass concentration before said macromolecule organic flocculating agent uses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101026067A CN102627386A (en) | 2012-04-10 | 2012-04-10 | Method for adding conditioner for dehydrating sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101026067A CN102627386A (en) | 2012-04-10 | 2012-04-10 | Method for adding conditioner for dehydrating sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102627386A true CN102627386A (en) | 2012-08-08 |
Family
ID=46585817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101026067A Pending CN102627386A (en) | 2012-04-10 | 2012-04-10 | Method for adding conditioner for dehydrating sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102627386A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102807276A (en) * | 2012-08-13 | 2012-12-05 | 中国石油天然气股份有限公司 | Wastewater treatment agent for oil well fracturing flowback wastewater and treatment method |
| CN104058570A (en) * | 2014-06-19 | 2014-09-24 | 陕西九环新材料有限责任公司 | Slurry destabilizing agent for membrane filter press and using method thereof |
| CN105967484A (en) * | 2015-12-29 | 2016-09-28 | 南京紫鑫汇萃环境科技有限公司 | Sludge deep dehydration method for processing flue gas desulfurization wastewater sludge |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5851997A (en) * | 1981-09-21 | 1983-03-26 | Ebara Infilco Co Ltd | Method of dehydrating sludge |
| CN101234841A (en) * | 2008-01-02 | 2008-08-06 | 广州普得环保设备有限公司 | Sludge concentration dehydration method |
| CN101367600A (en) * | 2008-09-17 | 2009-02-18 | 广州绿由工业弃置废物回收处理有限公司 | Additive for sludge dewatering and sludge dewatering method |
| CN101863610A (en) * | 2010-06-13 | 2010-10-20 | 东南大学 | Method for secondary deep dewatering of dewatered sludge |
-
2012
- 2012-04-10 CN CN2012101026067A patent/CN102627386A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5851997A (en) * | 1981-09-21 | 1983-03-26 | Ebara Infilco Co Ltd | Method of dehydrating sludge |
| CN101234841A (en) * | 2008-01-02 | 2008-08-06 | 广州普得环保设备有限公司 | Sludge concentration dehydration method |
| CN101367600A (en) * | 2008-09-17 | 2009-02-18 | 广州绿由工业弃置废物回收处理有限公司 | Additive for sludge dewatering and sludge dewatering method |
| CN101863610A (en) * | 2010-06-13 | 2010-10-20 | 东南大学 | Method for secondary deep dewatering of dewatered sludge |
Non-Patent Citations (1)
| Title |
|---|
| 柳海波等: "投加调理剂与表面活性剂对污泥脱水性能的影响", 《中国给水排水》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102807276A (en) * | 2012-08-13 | 2012-12-05 | 中国石油天然气股份有限公司 | Wastewater treatment agent for oil well fracturing flowback wastewater and treatment method |
| CN102807276B (en) * | 2012-08-13 | 2014-11-26 | 中国石油天然气股份有限公司 | Wastewater treatment agent for oil well fracturing flowback wastewater and treatment method |
| CN104058570A (en) * | 2014-06-19 | 2014-09-24 | 陕西九环新材料有限责任公司 | Slurry destabilizing agent for membrane filter press and using method thereof |
| CN104058570B (en) * | 2014-06-19 | 2016-04-20 | 陕西九环新材料有限责任公司 | A kind of mud coagulant of diaphragm filter press and using method thereof |
| CN105967484A (en) * | 2015-12-29 | 2016-09-28 | 南京紫鑫汇萃环境科技有限公司 | Sludge deep dehydration method for processing flue gas desulfurization wastewater sludge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sahu et al. | Review on chemical treatment of industrial waste water | |
| Yang et al. | Flocculation of both anionic and cationic dyes in aqueous solutions by the amphoteric grafting flocculant carboxymethyl chitosan-graft-polyacrylamide | |
| CN105540797B (en) | Efficient water treatment composite flocculant | |
| CN104085969B (en) | Spent acid is utilized to produce the method for compound polynary flocculant poly silicic acid chloro sulphuric acid ferro-aluminum | |
| EP3385230B1 (en) | Process of extracting and purifying humic substances from sanitary landfill leachate | |
| CN102249362B (en) | Method for processing industrial wastewater of polytetrafluoroethylene dispersion resins | |
| Li et al. | Extracting humic acids from digested sludge by alkaline treatment and ultrafiltration | |
| CN104724809B (en) | A kind of ternary polymerization flocculant based on natural polymer and preparation method thereof | |
| Asharuddin et al. | Performance assessment of cassava peel starch and alum as dual coagulant for turbidity removal in dam water | |
| CN101323473A (en) | Polyaluminium chloride e-poly-dimethyl-diallyl-ammonium chloride composite flocculent, preparation and use method thereof | |
| CN105692850B (en) | A kind of preparation method of water process banana skin high-molecular coagulant adopting | |
| CN101274780A (en) | Polymeric ferric polysulfate composite coagulant and application thereof | |
| JP2018020292A (en) | Low acrylamide flocculant composition and method for using low acrylamide flocculant composition | |
| CN104725644B (en) | A kind of amphoteric flocculating agent based on natural polymer and preparation method thereof | |
| KR20100074579A (en) | Chitosan-nipam thermosensitive polymer coagulant and method for the preparation therefor | |
| CN110713240A (en) | Composite flocculant and method for treating sewage or sludge by using same | |
| CN104261652A (en) | Efficient sludge dewatering flocculant | |
| CN102627386A (en) | Method for adding conditioner for dehydrating sludge | |
| Zhou et al. | Efficient separation of water-soluble humic acid using (3-aminopropyl) triethoxysilane (APTES) for carbon resource recovery from wastewater | |
| Bhatia et al. | Palm oil mill effluent pretreatment using Moringa oleifera seeds as an environmentally friendly coagulant: laboratory and pilot plant studies | |
| Li et al. | Performance and mechanisms of dredged sludge dewaterability enhancement with slag-based polymeric titanium aluminum coagulant | |
| JP2009214069A (en) | Treatment method for sewage sludge | |
| CN104671634A (en) | Iron inorganic flocculant sludge dewatering agent | |
| CN102863130B (en) | The treatment process of active sludge | |
| JP2006297228A (en) | Method of treating livestock wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120808 |