CN101691271A - Method for removing heavy ion by activated sludge by using industrial waste liquid - Google Patents
Method for removing heavy ion by activated sludge by using industrial waste liquid Download PDFInfo
- Publication number
- CN101691271A CN101691271A CN200910110707A CN200910110707A CN101691271A CN 101691271 A CN101691271 A CN 101691271A CN 200910110707 A CN200910110707 A CN 200910110707A CN 200910110707 A CN200910110707 A CN 200910110707A CN 101691271 A CN101691271 A CN 101691271A
- Authority
- CN
- China
- Prior art keywords
- add
- heavy metal
- active sludge
- soup
- waste liquid
- 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
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention discloses a method for removing heavy ion by activated sludge by using industrial waste liquid, namely, a liquid medicine is generated by adding an auxiliary and a catalyst of the invention into a large amount of acid-containing waste liquid discharged out by titanium dioxide factory, in order to achieve the purpose of removing heavy ion by the activated sludge through the liquid medicine processing of the invention after the activated sludge is disintegrated; the method solves the problems in removing heavy ion by the liquid phase method of the activated sludge and has the advantages of using waste to treat waste, easy process, simple apparatus and easy operation, etc.; therefore, a new solution for harmless and resourceful activated sludge is provided. The method is extensively suitable for the use in removing heavy ion by the activated sludge.
Description
Technical field the present invention relates to the method that a kind of active sludge is removed heavy metal, more particularly, relates to a kind of method of utilizing industrial effluent to remove heavy metal of activated sludge.
Background technology is current, and the China environmental protection career development is rapid, in all parts of the country a large amount of builds municipal sewage treatment factory, and the disposal of the accessory substance active sludge of Sewage Plant with utilize problem, also do not obtain adequate solution.Contain 4/5ths water and 1/5th suspension organic substance in the active sludge, contain nitrogen, phosphorus, potassium beneficial element and a large amount of biomasses, contain heavy metal complex such as pathogenic bacterium, parasitic ovum and chromium, cadmium, lead, arsenic, mercury again.Therefore, the innoxious and resource utilization of active sludge, must solve Three Difficult Issues: one is the sterilization and disinfection deodorizing, and two is dehydration and drying, and three is removing heavy metals; And wherein more scabrous be the removing heavy metals problem; On the one hand,, should administer, supervise its qualified discharge in the source of each blowdown point to newly-built sewage disposal plant; On the other hand, for building up the sewage disposal plant that is turning round, the active sludge that it is discharged, often some heavy metal components exceeds standard, and carries out agriculturally if active sludge will be become resource utilization, just needs to remove heavy metal; Up to the present, the active sludge removing heavy metals also is in the starting conceptual phase, also needs further research and development, could realize the suitability for industrialized production of active sludge removing heavy metals.
Summary of the invention the object of the present invention is to provide a kind of technology rationally, the treatment of wastes with processes of wastes against one another, utilize industrial effluent to remove the method for heavy metal of activated sludge.That utilizes promptly that titanium dioxide factory discharges contains acid waste liquid in a large number, adds auxiliary agent of the present invention and catalyzer, generates a kind of soup, through under the prerequisite that cracks, by this soup art breading, realizes that active sludge removes the method for heavy metal at active sludge.
In order to achieve the above object, the present invention has adopted following technical scheme:
A, soup system is joined: with a large amount of accessory substances of Titanium White Production By Sulfuric Acid Process factory: contain spent acid 5～30% (weight percent), under agitation condition, add Potassium Persulphate and make auxiliary agent, add strontium peroxide again and make catalyzer, make soup of the present invention; B, active sludge cracks: in the presence of defoamer, active sludge cracks the somatic cells wall under the high-speed stirring condition; C, the heavy metal chemical reaction in the active sludge: the active sludge after cracking, add soup of the present invention, generate the heavy metal salt material of indissoluble by chemical reaction; D through settlement separate, realizes removing the purpose of heavy metal with reacted material.
The present invention utilizes industrial effluent to remove the method for heavy metal of activated sludge, comprises that soup preparation, sludge disintegration, technological reaction, settlement separate, heavy metal send steps such as cement mill sintering.Its specific operation process is:
(1) sulfuric acid method titanium pigment production plant, one ton of product of every production, can pay produce contain acid 5～30% (weight percents, as follows) contain acid waste liquid more than 3 tons, to pay to produce and contain acid waste liquid and make the soup major constituent, make soup preparation jar with the normal temperature and pressure container that band stirs, in jar, add the acid waste liquid that contains that the titanium dioxide factory that contains acid 5～30% pays product earlier; Under agitation condition, in containing acid waste liquid, add 2.5～4.5% Potassium Persulphate pulvis and make auxiliary agent; Under agitation condition, add 0.25～0.45% strontium peroxide pulvis then again and make catalyzer; Continue to stir 8～10 minutes, promptly get soup of the present invention;
(2) have in the stirred pot of adjustable speed at another, add moisture 75～82% active sludge, at normal temperatures and pressures, in active sludge, add four fourth fat defoamers, add-on is 0.3～0.5% of an active sludge weight, starts agitator then, and the control mixing speed is 250～500 rev/mins, fully stirred 15～25 minutes, active sludge somatic cells wall is cracked;
(3) in the stirred pot of above-mentioned adjustable speed, at normal temperatures and pressures, active sludge is after cracking, continue to stir, but mixing speed should be reduced to 30～60 rev/mins and finish following operation: add aforementioned soup of the present invention while stir, add-on is 5～20% of an active sludge weight, stirs 15～30 minutes, make the heavy metal components reaction in soup and the mud, generate the heavy metal salt material of indissoluble;
(4) in the stirred pot of above-mentioned adjustable speed, stop stirs, and leaves standstill 8～12 hours, makes the heavy metal salt go into bottom because of the big sedimentation of proportion; Earlier the bottom material is emitted, obtain being rich in the bed material of heavy metal, bed material is dried, send to the cement mill and carry out sintering as cement raw material; Material in the remaining jar is the active sludge of removing heavy metal, and generally about 2/3rds, the active sludge that the gained heavy metal content does not exceed standard is mud up to standard to removal rate of heavy metal, can make agricultural organic fertilizer in the active sludge.
In implementing process of the present invention, active sludge is the accessory substance mud of moisture 75～82% Sewage Plant, and the waste liquid that titanium dioxide factory produces is the waste liquid that contains acid 5～30%, and the Potassium Persulphate of adding is the technical grade salable product, chemical formula K
2S
2O
8, molecular weight 270.33, colourless or white crystalline powder, quality standard: HG/T2155-91 contains Potassium Persulphate 〉=98.0%, contains free acid (with H
2SO
4Meter)≤0.3%, iron content (Fe)≤0.005%, chloride (in Cl)≤0.015%, ammonium salt-containing is (with NH
4Meter)≤0.9%, moisture≤0.03%, it works the promoter effect of removing heavy metal; Adding strontium peroxide is the technical grade salable product, chemical formula SrO
2, molecular weight 119.6, white crystalline powder, technical grade C class standard: contain available oxygen 〉=12.3%, moisture≤0.10%, other requirements can be ignored, and it works the catalyst action of removing heavy metal; Add four fourth fat technical grade product defoamers, can eliminate the foam that reaction generates; Above-mentioned utilization industry contains acid waste liquid and adds Potassium Persulphate and be catalyzer for auxiliary agent, strontium peroxide, and under active sludge cracks condition, make the heavy metal reaction generate salts substances and remove, be characteristics of the present invention.
In implementing process of the present invention, must grasp the degree of depth that reaction is carried out, control three big factors are controlled reaction depth: (1) adds the quantity of soup; (2) crack stirring intensity; (3) reaction churning time and settling time.Add that soup is too much, stirring intensity is excessive, reaction and settling time are long, though can improve removing heavy metals efficient, handle active sludge later, because of PH diminishes too much, and need with in the lime with could use; Otherwise then removing heavy metals is up to standard and resource utilization that influence next step is used.
Compared with prior art, the present invention has following tangible advantage: the treatment of wastes with processes of wastes against one another of the present invention, both solved the difficult problem of active sludge removing heavy metals, make again titanium dioxide factory contain in a large number the comprehensive utilization of acid waste liquid many an outlet; The removing heavy metals method is simple, device simple, and operation easily is for the active sludge harmless resource utilization provides a solution.
Be description of drawings of the present invention below the description of drawings:
Fig. 1 is that the present invention utilizes industrial effluent to remove the process flow diagram of heavy metal of activated sludge; Clearly represented the production operation whole process to mud up to standard among the figure from waste liquid.
Embodiment is following carries out more detailed description by specific embodiment to the present invention:
With reference to Fig. 1, sulfuric acid method titanium pigment production plant is paid the acid waste liquid that contains of product and make the soup major constituent, make soup preparation jar with the normal temperature and pressure container that band stirs, in jar, add the acid waste liquid that contains that the titanium dioxide factory that contains acid 20% (weight percent, as follows) pays product earlier; Under agitation condition, the Potassium Persulphate pulvis of adding 3.5% is made auxiliary agent in containing acid waste liquid; Under agitation condition, add 0.35% strontium peroxide pulvis then again and make catalyzer; Continue to stir 10 minutes, get soup of the present invention;
Have in the stirred pot of adjustable speed at another, add moisture 78% active sludge, at normal temperatures and pressures, in active sludge, add four fourth fat defoamers, add-on is 0.4% of an active sludge weight, starts agitator then, and the control mixing speed is 400 rev/mins, fully stirred 20 minutes, active sludge somatic cells wall is cracked;
In the stirred pot of above-mentioned adjustable speed, at normal temperatures and pressures, active sludge is after cracking, continue to stir, but mixing speed should be reduced to 40 rev/mins and finish following operation: add aforementioned soup of the present invention while stir, add-on is 10% of an active sludge weight, stirs 20 minutes, make the heavy metal components reaction in soup and the mud, generate the heavy metal salt material of indissoluble;
In the stirred pot of above-mentioned adjustable speed, stop stirs, and leaves standstill 10 hours, makes the heavy metal salt go into bottom because of the big sedimentation of proportion; With the bottom material emit dry after, send to the cement mill and carry out sintering as cement raw material; Material in the remaining jar is the active sludge of removing heavy metal, can be used as agricultural organic fertilizer raw material.
Claims (1)
1. method of utilizing industrial effluent to remove heavy metal of activated sludge comprises that soup preparation, sludge disintegration, technological reaction, settlement separate, heavy metal send steps such as cement mill sintering, is characterized in that:
A, sulfuric acid method titanium pigment production plant, pay and produce the acid waste liquid that contains that contains acid 5～30% (weight percents, as follows), to pay to produce and contain acid waste liquid and make the soup major constituent, make soup preparation jar with the normal temperature and pressure container that band stirs, in jar, add the acid waste liquid that contains that the titanium dioxide factory that contains acid 5～30% pays product earlier; Under agitation condition, in containing acid waste liquid, add 2.5～4.5% Potassium Persulphate pulvis and make auxiliary agent; Under agitation condition, add 0.25～0.45% strontium peroxide pulvis then again and make catalyzer; Continue to stir 8～10 minutes, get soup of the present invention;
B, have in the stirred pot of adjustable speed at another, add moisture 75～82% active sludge, at normal temperatures and pressures, add four fourth fat defoamers in active sludge, add-on is 0.3～0.5% of an active sludge weight, start agitator then, the control mixing speed is 250～500 rev/mins, fully stirs 15～25 minutes, and active sludge somatic cells wall is cracked;
C, in the stirred pot of above-mentioned adjustable speed, at normal temperatures and pressures, active sludge continues to stir after cracking, and finishes following operation but mixing speed should be reduced to 30～60 rev/mins: add aforementioned soup of the present invention while stir, add-on is 5～20% of an active sludge weight, stirred 15～30 minutes, and made the heavy metal components reaction in soup and the mud, generate the heavy metal salt material of indissoluble;
D, in the stirred pot of above-mentioned adjustable speed, stop stirs, and leaves standstill 8～12 hours, makes the heavy metal salt go into bottom because of the big sedimentation of proportion; Earlier the bottom material is emitted, obtain being rich in the bed material of heavy metal, bed material is dried, send to the cement mill and carry out sintering as cement raw material; Material in the remaining jar is the active sludge of removing heavy metal, can make agricultural organic fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910110707A CN101691271A (en) | 2009-10-13 | 2009-10-13 | Method for removing heavy ion by activated sludge by using industrial waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910110707A CN101691271A (en) | 2009-10-13 | 2009-10-13 | Method for removing heavy ion by activated sludge by using industrial waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101691271A true CN101691271A (en) | 2010-04-07 |
Family
ID=42080010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910110707A Pending CN101691271A (en) | 2009-10-13 | 2009-10-13 | Method for removing heavy ion by activated sludge by using industrial waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101691271A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948226A (en) * | 2010-09-15 | 2011-01-19 | 长沙达华污泥处理科技有限公司 | Method for removing heavy metal from sludge in sewage treatment plant |
| CN104876408A (en) * | 2015-05-27 | 2015-09-02 | 青海师范大学 | Sludge treatment method and system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020093732A (en) * | 2002-11-21 | 2002-12-16 | 조경제 | The method of heavy metal extraction from sludge with acid treatment and heavy metal removal |
-
2009
- 2009-10-13 CN CN200910110707A patent/CN101691271A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020093732A (en) * | 2002-11-21 | 2002-12-16 | 조경제 | The method of heavy metal extraction from sludge with acid treatment and heavy metal removal |
Non-Patent Citations (4)
| Title |
|---|
| MARINA ET AL.: "Heavy metals precipitation in sewage sludge", 《SEPARATION SCIENCE AND TECHNOLOGY》 * |
| 和苗苗等,: "去除污泥中重金属的研究进展", 《农机化研究》 * |
| 郑国河等,: "污泥重金属的非生物处理方法研究进展", 《污染防治技术》 * |
| 马海涛: "城市污泥中重金属形态分布及淋溶特性研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948226A (en) * | 2010-09-15 | 2011-01-19 | 长沙达华污泥处理科技有限公司 | Method for removing heavy metal from sludge in sewage treatment plant |
| CN104876408A (en) * | 2015-05-27 | 2015-09-02 | 青海师范大学 | Sludge treatment method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB654917A (en) | Improvements in or relating to a process of removing pollute from sewage | |
| CN101306849A (en) | Modification process of fly ash zeolite and wastewater treatment process for paper making | |
| CN108892347A (en) | A method of improving aerobic digested sludge dewatering | |
| CN101774673A (en) | Processing method of hardly degraded organic substance | |
| CN110467251A (en) | A kind of composite water treatment agent and the preparation method and application thereof | |
| CN101774669A (en) | Composite dephosphorizing agent for treating acidic wastewater containing phosphorus and preparation and application methods thereof | |
| CN102344230A (en) | Method for processing biological sludge slurry | |
| CN102303918B (en) | Method for treating acidic high-iron and high-manganese mine water and method for modifying fly ash | |
| CN102234168A (en) | Preparation and application method of mineral substance stabilizing agent for controlling releasing of phosphorus and heavy metals in dredged bottom sediment | |
| Ou et al. | Removal of ammonia nitrogen and phosphorus by porous slow-release Ca2+ ceramsite prepared from industrial solid wastes | |
| CN102775026A (en) | Method for treating biogas slurry by using modified fly ash | |
| CN101851054B (en) | Sludge dewatering conditioner, and preparation method and application thereof | |
| CN105540798A (en) | Compound denitrification agent for treating aquaculture wastewater and using method thereof | |
| CN101691271A (en) | Method for removing heavy ion by activated sludge by using industrial waste liquid | |
| KR100450882B1 (en) | Organic waste cleanser and method of recycling organic waste | |
| KR20130123799A (en) | Method for treating organic waste matter | |
| CN106348560B (en) | A kind of ozone-hydroxyl radical free radical joint catalysis oxidation sludge conditioning method | |
| CN105217923A (en) | Sludge slurry deep dehydration amendment and preparation method thereof | |
| CN109231724A (en) | A kind of coal chemical industry high concentration hard-degraded organic waste water processing method | |
| CN108328888A (en) | A method of using flyash to Treatment of Sludge | |
| CN109896656B (en) | Method for treating water chestnut starch processing wastewater | |
| CN102078795B (en) | Fly ash forming material for controlling growth of algae in landscape water and applications of fly ash forming material | |
| Amoohadi et al. | A comparative study on polyaluminum chloride (PACl) and Moringa oleifera (MO) chemically enhanced primary treatment (CEPT) in enhanced biogas production: anaerobic digestion performance and the Gompertz model | |
| JP2015091566A (en) | Slurry for recovering phosphorus, method for preparing the slurry, and method for recovering phosphorus from phosphorus-containing waste water | |
| CN105923747B (en) | Industrial Wastewater Treatment biology in situ growth-promoting intensifying device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100407 |