CN103482744B - A kind of horizontal sedimentation tank with sludge modification return-flow system and reflow method thereof - Google Patents
A kind of horizontal sedimentation tank with sludge modification return-flow system and reflow method thereof Download PDFInfo
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- CN103482744B CN103482744B CN201310447149.XA CN201310447149A CN103482744B CN 103482744 B CN103482744 B CN 103482744B CN 201310447149 A CN201310447149 A CN 201310447149A CN 103482744 B CN103482744 B CN 103482744B
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- 239000010802 sludge Substances 0.000 title claims abstract description 89
- 238000004062 sedimentation Methods 0.000 title claims abstract description 22
- 230000004048 modification Effects 0.000 title claims abstract description 19
- 238000012986 modification Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 230000007704 transition Effects 0.000 claims abstract description 23
- 239000012190 activator Substances 0.000 claims abstract description 21
- 229920002401 polyacrylamide Polymers 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 12
- 125000000129 anionic group Chemical group 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000000087 stabilizing effect Effects 0.000 abstract description 3
- 238000010992 reflux Methods 0.000 description 16
- 230000015271 coagulation Effects 0.000 description 11
- 238000005345 coagulation Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 8
- 238000005352 clarification Methods 0.000 description 5
- 239000010801 sewage sludge Substances 0.000 description 5
- 239000003814 drug Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to a kind of horizontal sedimentation tank with sludge modification return-flow system and reflow method thereof, wherein horizontal sedimentation tank comprises pond body and is located at water-in and the water outlet at body two ends, pond, pond body comprises is located at nearly water-in one end, the reaction zone set gradually along water (flow) direction and zone of transition, it is characterized in that: also comprise the return-flow system be connected with pond body, return-flow system comprises the sludge pipe connecting zone of transition and reaction zone, and drive mud to be refluxed back through sludge pipe by zone of transition the sludge delivery pump of reaction zone, dosing pump and mud curing box is provided with successively along mud throughput direction in the pipeline of sludge pipe, dosing pump is used for adding activator to the mud in sludge pipe.Use settling tank of the present invention and reflow method thereof, produce water quality stabilizing, energy consumption is low, effective, and on subsequent disposal without impact, and retrofit work amount is also little, and expense is low.
Description
Technical field
The present invention relates to water treatment field, particularly relate to a kind of reaction settling basin.
Background technology
In water treatment field, be no matter take tap water as the water purification industry of representative, or be the pure water industry of representative with thermal power generation, generally all will use reaction settling basin.Reaction settling basin has broad variety, and because China's development of modern industry is more late, reaction precipitation technical equipment is mainly from USSR (Union of Soviet Socialist Republics) and America and Europe.Also mainly be divided into two classes, i.e. advection (labyrinth) formula reaction settling basin (hereinafter referred to as horizontal sedimentation tank) and mechanical agitation type reaction settling basin what use in a large number at present.Both differences are to provide the mode difference of coagulation clarification institute energy requirement.
Sludge reflux technology is increase reaction settling basin subject range, improves the technical matters that reaction settling basin produces water quality, minimizing product ripples move.
Mechanical stirring originally accelerates settling tank, and be all widely used in water conservancy cyclical acceleration settling tank sludge reflux technology, but the sludge reflux application on above two class pond shapes belongs to inner circulation of sludge, the character of uncontrollable mud.In recent years, above two kinds of pond types are seldom applied in new, enlarging and reconstruction project.The main flow pond type of current coagulation clarification is efficient (high-density) settling tank and " micro-whirlpool " settling tank.Wherein potassium permanganate composites is the patented technology of Veolia water utilities, and micro-whirlpool is the proprietary technology of China, and both main differentiations are that the power resources needed for colloid coagulation are different.Because micro-whirlpool reaction settling basin belongs to the optimization of horizontal sedimentation tank, just in labyrinth, with the addition of flap, when making water flow through flap, occur that small whirlpool can provide the gradient of the hydromechanics required for coagulation.Efficiently the coagulation power of (high-density) settling tank is rotated by blade and produces.Therefore, under the condition that production capacity is certain, under the condition that is flow velocity is certain, the hydromechanics gradient that micro-vortex technology provides also is certain.When water fluctuation is comparatively large or other is severe, the pond of micro-whirlpool technology there will be product ripples and moves larger situation, may cause and turn over pond.
Performance driving economy and the security that directly affect subsequent processing device are understood in the pond of turning over of reaction settling basin.As, filter plant effective run time shortens, and self water consumption increases, and produces water unstable etc.Some special materials, as part colloid, partial organic substances, can only remove in coagulation clarification process, the instability of reaction settling basin can affect the water quality of product water in water purification industry, the work-ing life of follow-up desalter directly can be affected in pure water industry, therefore each water treatment unit is using the most important thing of pre-treatment as whole Production Flow Chart taking coagulation clarification as core, and that does one's utmost carries out coagulation clarification steady running work.
Current horizontal sedimentation tank and " micro-vortex " settling tank improved on its basis, due to the reason of this body structure, cannot control water quality when water occurrence temperature, change of water quality and stablize, the probability producing water deterioration is high, large on the impact of follow-up production capacity and device security.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, provide a kind of with sludge modification return-flow system, produce water quality stabilizing, energy consumption is low, effective, on subsequent disposal without impact, and build or retrofit work amount little, the horizontal sedimentation tank that expense is low.
For achieving the above object, the technical solution used in the present invention is: a kind of horizontal sedimentation tank with sludge modification return-flow system, comprise pond body and be located at water-in and the water outlet at body two ends, pond, described pond body comprises is located at nearly described water-in one end, the reaction zone set gradually along water (flow) direction and zone of transition, it is characterized in that: also comprise the return-flow system be connected with described pond body, described return-flow system comprises the sludge pipe connecting described zone of transition and reaction zone, and drive mud to be refluxed back through sludge pipe by zone of transition the sludge delivery pump of reaction zone, dosing pump and mud curing box is provided with successively along mud throughput direction in the pipeline of described sludge pipe, described dosing pump is used for adding activator to the mud in sludge pipe.
Preferably, the position that described sludge pipe is connected with described reaction zone is no more than 1/2nd places of reaction zone along water (flow) direction width.
Preferably, the position that is connected with described reaction zone of described sludge pipe in reaction zone along 1/1 to two/4th place of water (flow) direction width.
Preferably, described sludge delivery pump is variable frequency pump.
Preferably, described sludge pipe comprises the many spoil disposal pipelines connecting described zone of transition, and part spoil disposal pipeline is connected with described reaction zone, and described spoil disposal pipeline is provided with valve.
Preferably, described activator is the aqueous solution of anionic polyacrylamide, join sludge pipe treat form solution A in returned sluge, the amount that described dosing pump adds activator is less than or equal to 6 ‰ with the mass concentration that anionic polyacrylamide accounts for described solution A and is as the criterion.
Preferably, the amount that described dosing pump adds activator accounts for described solution A mass concentration with anionic polyacrylamide is as the criterion 0.5 ‰-6 ‰.
Preferably, the sludge quantity of described return-flow system backflow is more than or equal in the body of described pond and gets 1% of mud total amount before mud, backflow.
The reflow method of the above-mentioned horizontal sedimentation tank with sludge modification return-flow system is also provided, it is characterized in that, comprise the steps:
(1) coupling end of described sludge pipe and pond body gets mud in zone of transition, is refluxed along sludge pipe by sludge delivery pump to reaction zone;
(2) described dosing pump adds activator to the mud in sludge pipe, is added with mud slaking in described mud curing box of activator, completes modification;
(3) modified described mud is back to described reaction zone along sludge pipe.
Preferably, the position that described sludge pipe is connected with described reaction zone is no more than 1/2nd places of reaction zone along water (flow) direction width.
Preferably, the position that is connected with described reaction zone of described sludge pipe in reaction zone along 1/1 to two/4th place of water (flow) direction width.
Preferably, described sludge delivery pump is variable frequency pump.
Preferably, described sludge pipe comprises the many spoil disposal pipelines connecting described zone of transition, and part spoil disposal pipeline is connected with described reaction zone, and described spoil disposal pipeline is provided with valve.
Preferably, described activator is the aqueous solution of anionic polyacrylamide, join sludge pipe treat form solution A in returned sluge, the amount that described dosing pump adds activator is less than or equal to 6 ‰ with the mass concentration that anionic polyacrylamide accounts for described solution A and is as the criterion.
Preferably, the amount that described dosing pump adds activator accounts for described solution A mass concentration with anionic polyacrylamide is as the criterion 0.5 ‰-6 ‰.
Preferably, the sludge quantity of described return-flow system backflow is more than or equal in the body of described pond and gets 1% of mud total amount before mud, backflow.
The invention solves the defect existed in background technology, there is following beneficial effect:
1. horizontal sedimentation tank of the present invention, with return-flow system, sludge part in the body of pond can be taken out and be back to Chi Tizhong again through modified, use this settling tank, the backflow of mud can cover water change substantially, in addition the mud being through modification refluxed, colloid in mud, organic taking-up are effective, produce water quality stabilizing.
2. horizontal sedimentation tank of the present invention, can at existing horizontal sedimentation tank and micro-vortex " settling tank is transformed obtain, do not have construction work on the one hand, save manpower, can utilize existing installations and facilities on the other hand, implementation cost is low.Only two propulsion sources are needed: sludge delivery pump and dosing pump, therefore system energy consumption is also low in return-flow system.Dosing pump is arranged on sludge pipe stage casing, activator in the modified sewage sludge refluxed is combined with mud, thus can not penetrates horizontal sedimentation tank pond body and affect subsequent technique.
3. the position control that sludge pipe is connected with reaction zone is no more than 1/2nd of reaction zone length, so that coagulation medicine has water in more time and pond body to react in the modified sewage sludge of backflow, the best is 1/1 to two/4th place at reaction zone length.
4. sludge delivery pump can select variable frequency pump, according to the automatic regulating frequency of return-flow system flow, reduces energy consumption.
5. sludge pipe is except comprising the spoil disposal pipeline connecting zone of transition and reaction zone, can also arrange other spoil disposal pipeline be only connected with zone of transition for according to circumstances directly discharging mud with needs but not carrying out modification backflow.
6. reflow method of the present invention, in the modified sewage sludge of backflow, polyacrylamide combines with mud, and can not penetrate horizontal sedimentation tank pond body affects subsequent technique.Chemical feeding quantity for the anionic polyacrylamide of modified sewage sludge controls the mass concentration 0.5 ‰-6 ‰ in solution A, both saves medicament, and can obtain excellent modified effect again.In addition, owing to also containing a large amount of coagulation medicines in the mud of backflow, therefore can save the new pharmaceutical chemicals dropped into after backflow, saving can reach about 30%.
7. the sludge quantity of return-flow system backflow is according to water water quality survey, and when water water quality is more stable, it is lower that quantity of reflux can control in the scope being not less than 1%, both ensured reflowing result, and avoided waste again.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of the preferred embodiments of the present invention;
Fig. 2 is the system diagram of the preferred embodiments of the present invention;
In figure: 2, Chi Ti, 4, water-in, 6, water outlet, 8, reaction zone, 12, zone of transition, 14, return-flow system.
Embodiment
The present invention is further detailed explanation in conjunction with the accompanying drawings and embodiments now, and these accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
As shown in Figure 1-2, a kind of horizontal sedimentation tank with sludge modification return-flow system, comprise pond body 2 and be located at water-in 4 and the water outlet 6 at pond body 2 two ends, pond body 2 comprises to be located at nearly water-in 4 one end, along the reaction zone 8 that water (flow) direction sets gradually and zone of transition 12, also to comprise the return-flow system 14 be connected with pond body 2.Return-flow system 14 comprises the sludge pipe connecting zone of transition 12 and reaction zone 8, and drive mud to be refluxed back through sludge pipe by zone of transition 12 sludge delivery pump of reaction zone 8, be provided with dosing pump and mud curing box successively along mud throughput direction in the pipeline of sludge pipe, dosing pump is used for adding activator to the mud in sludge pipe.
Concrete, return-flow system 14 comprise is communicated with zone of transition 12 get mud unit, the reflux unit be communicated with reaction zone 8, and the activation unit of mud unit and reflux unit is got in connection.Get mud unit to comprise spoil disposal pipeline and be located at the sludge delivery pump in shore pipe road pipeline.Activation unit comprises sludge carrier pipe road, the chemical tank be communicated with sludge carrier pipe road and dosing pump, and is located at the mud curing box of sludge carrier pipe road tail end.Reflux unit comprises the reflux line be connected with mud curing box and the valve be located in reflux line.Spoil disposal pipeline comprises the first spoil disposal pipeline and two second spoil disposal pipelines that are connected with zone of transition 12 respectively, and the first spoil disposal pipeline is communicated with sludge carrier pipe road, refluxes for sludge modification; Second spoil disposal pipeline is provided with valve, can be used for direct spoil disposal.First spoil disposal pipeline, sludge carrier pipe road and reflux line connect to form sludge reflux pipeline successively.The position that reflux line is connected with reaction zone 8 in reaction zone 8 along 1/1 to two/3rd place of water (flow) direction width.
Sludge delivery pump is variable frequency pump, according to the automatic regulating frequency of return-flow system 14 flow, is conducive to reducing energy consumption.Controller (not shown) can also be set in return-flow system 14 of the present invention, controller is electrically connected with the valve on sludge delivery pump and reflux line respectively, thus according to the frequency of water quality fluctuation fuzzy control sludge delivery pump, mud amount is got in control, and return flow, control sludge back flow quantity, obtain suitable reflowing result with lower cost.
With the reflow method of the horizontal sedimentation tank of sludge modification return-flow system, comprise the steps:
(1) get mud by the first spoil disposal pipeline in pond body 2 zone of transition 12, refluxed to reaction zone 8 along sludge carrier pipe road by sludge delivery pump;
(2) dosing pump adds activator to the mud in sludge carrier pipe road, is added with mud slaking in mud curing box of activator, completes modification;
(3) modified mud is back to the reaction zone 8 of pond body 2 along reflux line.
Concrete, in step (2), activator is the aqueous solution of anionic polyacrylamide, join sludge pipe treat form solution A in returned sluge, dosing pump adds the amount of activator accounts for solution A mass concentration with anionic polyacrylamide and is as the criterion 0.5 ‰-6 ‰.
Mud curing box belongs to prior art, and be a corrosion-resistant casing slowly stirred, control curing temperature is 5-50 DEG C, and the curing time is 5-30min.
Return-flow system 14 reflux sludge quantity be more than or equal in pond body 2 get mud, backflow before mud total amount 1%.
Be back in the modified sewage sludge in pond body 2 reaction zone 8 and have coagulation medicine due to also surplus, can continue to participate in reaction, save and newly add chemical reagent.
Above according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, related personnel in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification sheets, must determine technical scope according to right.
Claims (5)
1. the horizontal sedimentation tank with sludge modification return-flow system, comprise pond body and be located at water-in and the water outlet at body two ends, pond, described pond body comprises is located at nearly described water-in one end, the reaction zone set gradually along water (flow) direction and zone of transition, it is characterized in that: also comprise the return-flow system be connected with described pond body, described return-flow system comprises the sludge pipe connecting described zone of transition and reaction zone, and drive mud to be refluxed back through sludge pipe by zone of transition the sludge delivery pump of reaction zone, dosing pump and mud curing box is provided with successively along mud throughput direction in the pipeline of described sludge pipe, described dosing pump is used for adding activator to the mud in sludge pipe,
The position that described sludge pipe is connected with described reaction zone is no more than 1/2nd places of reaction zone along water (flow) direction width;
Described activator is the aqueous solution of anionic polyacrylamide, join sludge pipe treat form solution A in returned sluge, the amount that described dosing pump adds activator accounts for described solution A mass concentration with anionic polyacrylamide is as the criterion 0.5 ‰-6 ‰;
The sludge quantity of described return-flow system backflow is more than or equal in the body of described pond gets 1% of mud total amount before mud, backflow.
2. a kind of horizontal sedimentation tank with sludge modification return-flow system according to claim 1, is characterized in that: the position that described sludge pipe is connected with described reaction zone in reaction zone along 1/1 to two/4th place of water (flow) direction width.
3. a kind of horizontal sedimentation tank with sludge modification return-flow system according to claim 1, is characterized in that: described sludge delivery pump is variable frequency pump.
4. a kind of horizontal sedimentation tank with sludge modification return-flow system according to claim 1, it is characterized in that: described sludge pipe comprises the many spoil disposal pipelines connecting described zone of transition, part spoil disposal pipeline is connected with described reaction zone, and described spoil disposal pipeline is provided with valve.
5. according to claim 1-4
in arbitrary claimthe reflow method of the described horizontal sedimentation tank with sludge modification return-flow system, is characterized in that, comprise the steps:
(1) coupling end of described sludge pipe and pond body gets mud in zone of transition, is refluxed along sludge pipe by sludge delivery pump to reaction zone;
(2) described dosing pump adds activator to the mud in sludge pipe, is added with mud slaking in described mud curing box of activator, completes modification;
(3) modified described mud is back to described reaction zone along sludge pipe.
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| CN201310447149.XA CN103482744B (en) | 2013-09-27 | 2013-09-27 | A kind of horizontal sedimentation tank with sludge modification return-flow system and reflow method thereof |
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| CN201310447149.XA CN103482744B (en) | 2013-09-27 | 2013-09-27 | A kind of horizontal sedimentation tank with sludge modification return-flow system and reflow method thereof |
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| CN103482744B true CN103482744B (en) | 2016-01-20 |
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| CN107804942A (en) * | 2016-09-08 | 2018-03-16 | 哈尔滨理工大学 | A kind of mine water treatment system of the acidity containing suspension |
| CN112358115A (en) * | 2020-09-28 | 2021-02-12 | 安徽普氏生态环境工程有限公司 | Efficient sludge backflow reinforced magnetic coagulation system and sedimentation method thereof |
| CN114702150A (en) * | 2022-03-30 | 2022-07-05 | 乾通环境科技(苏州)有限公司 | Pretreatment system for high-turbidity oil-containing seawater for small and medium-sized seawater desalination plants |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101172695A (en) * | 2007-10-15 | 2008-05-07 | 上海市政工程设计研究总院 | Centralized aerobic mud pulling sedimentation tank |
| CN102020346A (en) * | 2010-12-19 | 2011-04-20 | 杭州（火炬）西斗门膜工业有限公司 | Efficient coagulating sedimentation basin |
| CN201848130U (en) * | 2010-11-18 | 2011-06-01 | 中国石油化工集团公司 | Activated sludge settling tank |
| CN202410256U (en) * | 2012-01-16 | 2012-09-05 | 中冶赛迪工程技术股份有限公司 | Circulating clarifier for sludge |
| CN203486952U (en) * | 2013-09-27 | 2014-03-19 | 乾通环境科技(苏州)有限公司 | Horizontal sedimentation tank with sludge modified backflow system |
-
2013
- 2013-09-27 CN CN201310447149.XA patent/CN103482744B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172695A (en) * | 2007-10-15 | 2008-05-07 | 上海市政工程设计研究总院 | Centralized aerobic mud pulling sedimentation tank |
| CN201848130U (en) * | 2010-11-18 | 2011-06-01 | 中国石油化工集团公司 | Activated sludge settling tank |
| CN102020346A (en) * | 2010-12-19 | 2011-04-20 | 杭州（火炬）西斗门膜工业有限公司 | Efficient coagulating sedimentation basin |
| CN202410256U (en) * | 2012-01-16 | 2012-09-05 | 中冶赛迪工程技术股份有限公司 | Circulating clarifier for sludge |
| CN203486952U (en) * | 2013-09-27 | 2014-03-19 | 乾通环境科技(苏州)有限公司 | Horizontal sedimentation tank with sludge modified backflow system |
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