CN103818989A - Method and device for delayed stirring and coagulating granulation treatment of waste water in high-suspension system - Google Patents
Method and device for delayed stirring and coagulating granulation treatment of waste water in high-suspension system Download PDFInfo
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- CN103818989A CN103818989A CN201410085481.0A CN201410085481A CN103818989A CN 103818989 A CN103818989 A CN 103818989A CN 201410085481 A CN201410085481 A CN 201410085481A CN 103818989 A CN103818989 A CN 103818989A
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Abstract
A method for delayed stirring and coagulating granulation treatment of waste water in a high-suspension system comprises the steps as follows: waste water in the high-suspension system is subjected to high shearing force field breakage to finish homogenization of impurity granules in the suspension system; and the homogenized waste water is subjected to delayed stirring and coagulating granulation, that is, firstly, a flocculating agent is added to destabilize and agglomerate suspensoid in the waste water to realize rapid flocculation, secondly, a coagulant aiding agent is added for agglomeration granulation under the proper hydraulic shearing action, and finally, the hydraulic power operation condition is optimized to densify granule sludge formed by agglomeration granulation; and the granule sludge formed in a densification reaction is separated from water easily, so that waste water in the high-suspension system is treated efficiently and rapidly. The invention further provides a corresponding treatment device. The size distribution of impurity granules in the suspension system is changed through high shearing force field breakage, so that granule homogenization is realized, further, coagulating granulation of waste water is performed under the specific coagulating operation condition, densification of sludge granules is completed simultaneously, and the formed sludge granules are high in settling velocity and easy to separate.
Description
Technical field
The invention belongs to technical field of sewage, particularly a kind of high system waste water time delay stirring coagulation method of granulating and device of being suspended.
Background technology
Height is suspended system waste water and refers to the waste water that also has inorganic particle, emulsion and organic colloid that a large amount of particle diameter difference is large in water in water, adopting coagulating treatment technique for this kind of waste water is optimal selection, and this technique can be removed suspended substance in water, colloidal solid and larger molecular organics.This process is generally divided into two steps: flocculation and cohesion, flocculation refers to that fine particle, colloid and solvability macromolecular substance by adding in water in flocculation agent and water have an effect, change its surface charge property and impel such material mutually to assemble, form fine particles; Cohesion refers under suitable hydraulic shear effect, by polymer substance adsorption bridging, makes the particulate forming in flocculation mutually cohere and form the more process of big scale insoluble particles.
But, be suspended system waste water for height, owing to wherein containing the great inorganic particle of a large amount of particle diameter differences, emulsion and organic colloid, while directly adopting conventional coagulation process to process, can form the flco that size is different, porosity is high in the flocculation stage, and then form loosely organized, the high mud of water ratio at agglomeration phase, and in mud flco, contain lightweight emulsion, directly cause the settling property extreme difference of mud.After quiet heavy 1h, sludge volume still can be up to 60～80% under normal circumstances, cause coagulating treatment to lose its due value.Therefore, develop the coagulation removal technology that is applicable to high suspensoid waste water for improving such wastewater treatment rate, reduce cost for wastewater treatment, cutting down pollutent to the discharge of periphery water body, guarantee that environmental quality is all significant.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of high system waste water time delay stirring coagulation method of granulating that is suspended, be suspended system impurity particle size distribution by broken change the in the high-shear field of force, making it particle homogenizes, and under specific coagulation operational condition, carry out the coagulation granulation of waste water, complete the densification of mud granule simultaneously, and the heavy speed of the mud granule forming fast, be easy to separate.
To achieve these goals, the technical solution used in the present invention is:
A kind of high system waste water time delay stirring coagulation method of granulating that is suspended, comprises the steps:
Height is suspended to system waste water and carries out the fragmentation of the high-shear field of force, complete and be suspended homogenizing of system impurity particle;
The waste water that to process through homogenizing carry out time delay and stir coagulation granulation, first, add flocculation agent and will make that suspensoid in waste water is de-surely to be assembled to realize rapid flocculation; Secondly, add coagulant aids and condense granulation under suitable hydraulic shear effect; Finally, Optimum Hydraulic operational condition makes to condense the granule sludge densification that granulation forms.
The crushing strength of described high-shear field of force fragmentation is 300s
-1< G < 350s
-1, the time length is 15～20min.
In described rapid flocculation process, stirring intensity maintains 130s
-1< G < 150s
-1, adopting aluminium saline flocculating agent, dosage is controlled at 80～200mg/L, reaction times 1～2min.
In described cohesion granulation process, stirring intensity maintains 15s
-1< G < 20s
-1, adopting cationic-type polyacrylamide, dosage is controlled at 5～15mg/L, reaction times 8～10min.
In described densification process, stirring intensity maintains 25s
-1< G < 30s
-1, time length 15～20min.
The granularity that described densification forms is 200～300 μ m, and water ratio is less than 85%.
The present invention also provides a kind of high system waste water time delay stirring coagulation granulation treatment unit that is suspended, and comprising:
The treatment zone that homogenizes, utilizes hydraulic shear effect to be suspended the fragmentation of system waste water to height, completes and is suspended homogenizing of system impurity particle;
Rapid flocculation district, is wherein provided with whipping appts and is connected with flocculating agent feeding device, by de-the suspensoid homogenizing in waste water after treatment steady gathering;
Cohesion granulation zone, is wherein provided with whipping appts and is connected with coagulant aids throwing device, by the de-steady suspensoid cohesion granulation of assembling;
Time delay stirring area, is wherein provided with whipping appts, the granule sludge densification that cohesion granulation is formed.
The described shearing force homogenizing in treatment zone is from the spiral agitator being arranged at wherein.
Compared with prior art, the invention has the beneficial effects as follows:
1, present method is easy and simple to handle, easily realizes mass-producing application.
2, present method suitability is strong, adopts the Sewage Plant of different biological treatments all can apply.
3, present method processing efficiency is high, and sludge water can directly discharge after treatment.
4, present method processing cost is low.
Embodiment
Describe embodiments of the present invention in detail below in conjunction with embodiment.
A kind of high system waste water time delay stirring coagulation granulation treatment unit that is suspended of the present invention, comprising: the treatment zone that homogenizes, and the hydraulic shear effect that the spiral agitator of establishing in utilization produces is suspended the fragmentation of system waste water to height, completes and is suspended homogenizing of system impurity particle; Rapid flocculation district, is wherein provided with whipping appts and is connected with flocculating agent feeding device, by de-the suspensoid homogenizing in waste water after treatment steady gathering; Cohesion granulation zone, is wherein provided with whipping appts and is connected with coagulant aids throwing device, by the de-steady suspensoid cohesion granulation of assembling; Time delay stirring area, is wherein provided with whipping appts, the granule sludge densification that cohesion granulation is formed.
Height according to the present invention is suspended the time delay of system waste water and stirs coagulation prilling process:
Embodiment mono-
First the crushing strength that, control high-shear field force break process homogenizes in reaction is 300s
-1, (the about 800r/min of whipping appts rotating speed), time length 10min, is suspended system waste water to height and carries out the fragmentation of the high-shear field of force and be suspended homogenizing of system impurity particle to complete.
Subsequently, enter coagulation granulation zone through the waste water of processing that homogenizes; Coagulation granulation has three steps:
Rapid flocculation district, the stirring intensity of controlling whipping appts maintains 130s
-1, adopting aluminium saline flocculating agent, dosage is controlled at 200mg/L, and reaction times 1min makes de-steady gathering of suspensoid in waste water;
Cohesion granulation zone, the stirring intensity of controlling whipping appts maintains 15s
-1, adopting cationic-type polyacrylamide, dosage is controlled at 15mg/L, and reaction times 8min, condenses granulation;
Time delay stirring area, the stirring intensity of controlling whipping appts maintains 25s
-1, time length 20min, makes to condense the granule sludge densification that granulation forms.
Finally, after measured, the mud particle diameter of densification mud granule is 220～280 μ m, and water ratio is less than 85%.
Embodiment bis-
First the crushing strength that, control high-shear field force break process homogenizes in reaction is 350s
-1, (the about 1200r/min of whipping appts rotating speed), the time length is 15min, height is suspended to system waste water and carries out the fragmentation of the high-shear field of force and be suspended homogenizing of system impurity particle to complete.
Subsequently, enter coagulation granulation zone through the waste water of processing that homogenizes; Coagulation granulation has three steps:
Rapid flocculation district, the stirring intensity of controlling whipping appts maintains 150s
-1, adopting aluminium saline flocculating agent, dosage is controlled at 80mg/L, and reaction times 2min makes de-steady gathering of suspensoid in waste water;
Cohesion granulation zone, the stirring intensity of controlling whipping appts maintains 20s
-1, adopting cationic-type polyacrylamide, dosage is controlled at 5mg/L, and reaction times 10min, condenses granulation;
Time delay stirring area, the stirring intensity of controlling whipping appts maintains 30s
-1, time length 15min, makes to condense the granule sludge densification that granulation forms.
Finally, after measured, the mud particle diameter of densification mud granule is 260～300 μ m, and water ratio is less than 85%.
Embodiment tri-
First the crushing strength that, control high-shear field force break process homogenizes in reaction is 315s
-1, (the about 1000r/min of whipping appts rotating speed), the time length is 12min, height is suspended to system waste water and carries out the fragmentation of the high-shear field of force and be suspended homogenizing of system impurity particle to complete.
Subsequently, enter coagulation granulation zone through the waste water of processing that homogenizes; Coagulation granulation has three steps:
Rapid flocculation district, the stirring intensity of controlling whipping appts maintains 140s
-1, adopting aluminium saline flocculating agent, dosage is controlled at 120mg/L, and reaction times 1min makes de-steady gathering of suspensoid in waste water;
Cohesion granulation zone, the stirring intensity of controlling whipping appts maintains 18s
-1, adopting cationic-type polyacrylamide, dosage is controlled at 10mg/L, and reaction times 9min condenses granulation under suitable hydraulic shear effect;
Time delay stirring area, the stirring intensity of controlling whipping appts maintains 26s
-1, time length 18min, makes to condense the granule sludge densification that granulation forms.
Densification mud granule, its mud particle diameter is 200～220 μ m, water ratio is less than 85%.
Claims (8)
1. the high system waste water time delay stirring coagulation method of granulating that is suspended, is characterized in that, comprises the steps:
Height is suspended to system waste water and carries out the fragmentation of the high-shear field of force, complete and be suspended homogenizing of system impurity particle;
The waste water that to process through homogenizing carry out time delay and stir coagulation granulation, first, add flocculation agent and will make that suspensoid in waste water is de-surely to be assembled to realize rapid flocculation; Secondly, add coagulant aids and condense granulation under suitable hydraulic shear effect; Subsequently, Optimum Hydraulic operational condition makes to condense the granule sludge densification that granulation forms; Finally, the reacted processing water of densification is precipitated, realize the high fast processing that is suspended system waste water.
2. height according to claim 1 is suspended the time delay of system waste water and stirs coagulation method of granulating, it is characterized in that, the crushing strength of described high-shear field of force fragmentation is 300s
-1< G < 350s
-1, the time length is 15～20min.
3. height according to claim 1 is suspended the time delay of system waste water and stirs coagulation method of granulating, it is characterized in that, in described rapid flocculation process, stirring intensity maintains 130s
-1< G < 150s
-1, adopting aluminium saline flocculating agent, dosage is controlled at 80～200mg/L, reaction times 1～2min.
4. height according to claim 1 is suspended the time delay of system waste water and stirs coagulation method of granulating, it is characterized in that, in described cohesion granulation process, stirring intensity maintains 15s
-1< G < 20s
-1, adopting cationic-type polyacrylamide, dosage is controlled at 5～15mg/L, reaction times 8～10min.
5. height according to claim 1 is suspended the time delay of system waste water and stirs coagulation method of granulating, it is characterized in that, in described densification process, stirring intensity maintains 25s
-1< G < 30s
-1, time length 15～20min.
6. height according to claim 1 is suspended the time delay of system waste water and stirs coagulation method of granulating, it is characterized in that, the granularity that described densification forms is 200～300 μ m, and water ratio is less than 85%.
7. the high system waste water time delay stirring coagulation granulation treatment unit that is suspended, is characterized in that, comprising:
The treatment zone that homogenizes, utilizes hydraulic shear effect to be suspended the fragmentation of system waste water to height, completes and is suspended homogenizing of system impurity particle;
Rapid flocculation district, is wherein provided with whipping appts and is connected with flocculating agent feeding device, by de-the suspensoid homogenizing in waste water after treatment steady gathering;
Cohesion granulation zone, is wherein provided with whipping appts and is connected with coagulant aids throwing device, by the de-steady suspensoid cohesion granulation of assembling;
Time delay stirring area, is wherein provided with whipping appts, the granule sludge densification that cohesion granulation is formed.
8. height according to claim 7 is suspended the time delay of system waste water and stirs coagulation granulation treatment unit, it is characterized in that, described in the shearing force that homogenizes in treatment zone from the spiral agitator being arranged at wherein.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410085481.0A CN103818989B (en) | 2014-03-10 | 2014-03-10 | Method and device for delayed stirring and coagulating granulation treatment of waste water in high-suspension system |
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|---|---|---|---|
| CN201410085481.0A CN103818989B (en) | 2014-03-10 | 2014-03-10 | Method and device for delayed stirring and coagulating granulation treatment of waste water in high-suspension system |
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| CN103818989A true CN103818989A (en) | 2014-05-28 |
| CN103818989B CN103818989B (en) | 2015-05-27 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101117250A (en) * | 2007-06-01 | 2008-02-06 | 华电水处理技术工程有限公司 | Method and equipment for purifying recirculated cooling water or town B-grade sewage |
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- 2014-03-10 CN CN201410085481.0A patent/CN103818989B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101117250A (en) * | 2007-06-01 | 2008-02-06 | 华电水处理技术工程有限公司 | Method and equipment for purifying recirculated cooling water or town B-grade sewage |
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Inventor after: Jin Pengkang Inventor after: Wang Xiaochang Inventor before: Jin Pengkang Inventor before: Ren Wuang Inventor before: Wang Xiaochang |
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Effective date of registration: 20210705 Address after: 721000 No.1, north section of Fenghuang 6th Road, high tech Development Zone, Baoji City, Shaanxi Province Patentee after: SHAANXI URSTAR ENVIRONMENTAL SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 710055 No. 13, Yanta Road, Shaanxi, Xi'an Patentee before: XI'AN University OF ARCHITECTURE & TECHNOLOGY |
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