CN103771626A - Reactor for integrally treating deeply-dehydrated sludge water and concentrated and dehydrated sludge water - Google Patents
Reactor for integrally treating deeply-dehydrated sludge water and concentrated and dehydrated sludge water Download PDFInfo
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- CN103771626A CN103771626A CN201410049155.4A CN201410049155A CN103771626A CN 103771626 A CN103771626 A CN 103771626A CN 201410049155 A CN201410049155 A CN 201410049155A CN 103771626 A CN103771626 A CN 103771626A
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Abstract
The invention relates to a reactor for integrally treating deeply-dehydrated sludge water and concentrated and dehydrated sludge water. The reactor comprises a filtering unit, a mixed reaction unit and a sedimentation unit which are integrally arranged, wherein the filtering unit is provided with a concentrated and dehydrated sludge water inlet, a concentrated and dehydrated sludge water sludge outlet, a filtering assembly and a concentrated and dehydrated sludge water filtration water outlet; the mixed reaction unit is provided with a deeply-dehydrated sludge water inlet and a stirrer; and the sedimentation unit is provided with a sediment collecting hole and a purified sludge water outlet. Compared with the prior art, the reactor has the advantages that over 95% of suspended solids in the concentrated and dehydrated sludge water are removed by using an efficient filtering device, the turbidity of effluent is lower than 5NTU, and then, the effluent and the deeply-dehydrated sludge water are subjected to mixed reaction, the pollutant removal effect can be improved, the phosphorus content of the generated sediment is also remarkably increased, and the phosphorus in the sewage can be favorably recycled.
Description
Technical field
The invention belongs to sewage treatment area, relate to a kind of waste disposal plant, especially relate to the reactor of a kind of close-coupled processing deep dehydration sludge water and thickening sludge water.
Background technology
Dirty water living creature processing technique take activated sludge process as representative can be discharged a large amount of water ratio higher than 99% excess sludge in sewage purification, concentrates and dehydration realizes the conventional sludge treatment technique that reducing sludge volume is sewage work by mud.The waste water producing in the concentrated and dehydration of mud, is called thickening sludge water.Along with the further raising of Urbanization Construction, China's sewage load increases, sludge quantity also rolls up thereupon, but land resources is more and more nervous, after thickening, the mud of water ratio 80% left and right can not meet landfill requirement, and mud need reach water ratio through further conditioning and deep dehydration just can carry out landfill below 60%.In deeply dehydrating sludge treatment process, need in mud, add FeCl
3, unslaked lime etc. nurses one's health, and discharges in conjunction with water, planar water and internal water by cell wall breaking, improves the dewatering of mud, then high-pressure compressing dewaters to water ratio lower than 60%, special conditions reaches below 50%.At present, deeply dehydrating sludge technology is in Hangzhou seven lattice, Wu Xilu village, Xiamen, the practical application of Ji Meideng sewage work.The waste water producing in deeply dehydrating sludge process, is called deep dehydration sludge water.
Along with Sludge landfill is disposed the raising to water content requirement, the deep dehydration mud water yield rose to 8220t/d in 2013 from the 220t/d of 2006, and engineering quantity rises to 37 in 2013 from 1 in 2006.At present, most of large-scale wastewater treatment plant has thickening sludge water and two kinds of sludge waters of deep dehydration sludge water.In thickening sludge water, suspended substance, organism and positive phosphorus concentration are higher, organism and Ca in deep dehydration sludge water
2+ionic concn is higher.Deep dehydration sludge water and thickening sludge water are mixed to the Ca in deep dehydration sludge water
2+meeting generates the precipitations such as calcium phosphate and hydroxyapatite with the positive phosphorus reaction in thickening sludge water, goes back part that can be removed organism simultaneously.But thickening sludge water suspended substance solid is higher, two kinds of direct mixing of sludge water not only can reduce contaminant removal efficiency, and in the solid forming, available phosphorus content is lower, is unfavorable for recycling.
Summary of the invention
Object of the present invention is exactly the reactor that a kind of simple in structure, significant close-coupled processing deep dehydration sludge water of wastewater treatment efficiency and thickening sludge water are provided in order to overcome the defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
The reactor of close-coupled processing deep dehydration sludge water and thickening sludge water, this reactor comprises filtering unit, hybrid reaction unit and the precipitation unit of integrated setting, described filtering unit is provided with thickening sludge water water-in, thickening sludge water mud discharging mouth, filter assemblies and thickening sludge water and filters out the mouth of a river, described hybrid reaction unit is provided with deep dehydration sludge water water-in and agitator, and described precipitation unit is provided with throw out and collects mouth and purify sludge water outlet;
Thickening sludge water enters into filtering unit from thickening sludge water water-in, after filtration after components apart, particulate matter is trapped, and discharge from thickening sludge water mud discharging mouth, thickening sludge water filtration water outlet filters out the mouth of a river from thickening sludge water and enters into hybrid reaction unit, react with the deep dehydration sludge water mix and blend entering from deep dehydration sludge water water-in, the precipitation forming is collected a mouthful discharge by throw out, supernatant liquor, for purifying sludge water, is discharged from purifying sludge water outlet.
Described thickening sludge water water-in and thickening sludge water mud discharging mouth are located at the downside of filter assemblies, and described thickening sludge water filters out the mouth of a river and be located at the upside of filter assemblies.
Described filter assemblies is filtering net.
Described filtering net is bilayer structure, and downside is 150 order filtering nets, and upside is 500 order filtering nets.
Described filtering unit is a cone-shaped body, and described hybrid reaction unit and precipitation unit share a cone-shaped body, and the bottom of hybrid reaction unit is communicated with precipitation unit.
Described agitator is three leaf paddle stirrers.
Utilize the concrete steps of the close-coupled processing deep dehydration sludge water of reactor of the present invention and thickening sludge water as follows:
First thickening sludge water enters filtering unit and flows from bottom to top from thickening sludge water water-in, through filter assemblies (small-bore filter screen), macrobead in thickening sludge water is directly sedimentation in this unit, small-particle can be removed through small-bore strainer filtering, and discharges from thickening sludge water mud discharging mouth.
Thickening sludge water filtration water outlet filters out the mouth of a river from thickening sludge water and enters into hybrid reaction unit, and deep dehydration sludge water pumps into hybrid reaction unit according to certain flow ratio, the Ca in deep dehydration sludge water
2+filter the PO in water outlet with thickening sludge water
4 3-precipitin reaction occurs, and partial organic substances can be removed by the form of co precipitation.
In precipitation unit, thickening sludge water filters the throw out of water outlet and deep dehydration sludge water reaction formation can, in sedimentation under action of gravity, collect a mouthful discharge by throw out, and supernatant liquor is for purifying sludge water, from purification sludge water outlet discharge.
Compared with prior art, the present invention is because effective filter has been removed more than 95% suspended solids of thickening sludge water, delivery turbidity is lower than 5NTU, again with deep dehydration sludge water hybrid reaction, not only can improve pollutant removal, and generate throw out phosphorus content and also significantly improve, be conducive to the resource utilization of phosphor in sewage.
Accompanying drawing explanation
Fig. 1 is the structural representation of reactor of the present invention;
Fig. 2 is under different deep dehydration sludge waters compares with thickening sludge water volume, conventional art and dephosphorization efficiency by using of the present invention contrast schematic diagram.
Number in the figure: A is filtering unit, B is hybrid reaction unit, C is precipitation unit, and 1 is thickening sludge water water-in, and 2 is thickening sludge water mud discharging mouth, 3 is filter assemblies, 4 for thickening sludge water filters out the mouth of a river, and 5 is deep dehydration sludge water water-in, and 6 is agitator, 7 for purifying sludge water outlet, and 8 is throw out collection mouthful.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The reactor of close-coupled processing deep dehydration sludge water and thickening sludge water, as shown in Figure 1, this reactor comprises filtering unit A, hybrid reaction unit B and the precipitation unit C of integrated setting, filtering unit A is provided with thickening sludge water water-in 1, thickening sludge water mud discharging mouth 2, filter assemblies 3 and thickening sludge water and filters out the mouth of a river 4, hybrid reaction unit B is provided with deep dehydration sludge water water-in 5 and agitator 6, and precipitation unit C is provided with throw out and collects mouth 8 and purify sludge water outlet 7; Thickening sludge water water-in 1 and thickening sludge water mud discharging mouth 2 are located at the downside of filter assemblies 3, and thickening sludge water filters out the mouth of a river 4 and be located at the upside of filter assemblies 3.Filter assemblies 3 is filtering net.Filtering net is bilayer structure, and downside is 150 order filtering nets, and upside is 500 order filtering nets.Filtering unit A is a cone-shaped body, and hybrid reaction unit B and precipitation unit C share a cone-shaped body, and the bottom of hybrid reaction unit B is communicated with precipitation unit C.Agitator 6 is three leaf paddle stirrers.
Utilize the concrete steps of the close-coupled processing deep dehydration sludge water of this reactor and thickening sludge water as follows:
First thickening sludge water enters filtering unit A and flows from bottom to top from thickening sludge water water-in 1, through filter assemblies 3 (small-bore filter screen), macrobead in thickening sludge water is directly sedimentation in this unit, small-particle can be removed through small-bore strainer filtering, and discharges from thickening sludge water mud discharging mouth 2.
Thickening sludge water filtration water outlet filters out the mouth of a river 4 from thickening sludge water and enters into hybrid reaction unit B, deep dehydration sludge water pumps into hybrid reaction unit B according to certain flow ratio from deep dehydration sludge water water-in 5, under the stirring action of three leaf paddle stirrers, temperature field, concentration field evenly mix rapidly, fully reaction after certain hydraulic detention time, the Ca in deep dehydration sludge water
2+filter the PO in water outlet with thickening sludge water
4 3-precipitin reaction occurs, and partial organic substances can be removed by the form of co precipitation.
In precipitation unit C, thickening sludge water filters the throw out of water outlet and deep dehydration sludge water reaction formation can, in sedimentation under action of gravity, collect mouthful 8 discharges by throw out, and supernatant liquor is for purifying sludge water, discharge from purifying sludge water outlet 7, enter follow-up system.
Utilize close-coupled processing deep dehydration sludge water that embodiment 1 describes and the reactor of thickening sludge water, carried out deep dehydration sludge water in Shanghai City Bai Longgang sewage work and processed thickening sludge water test in place, it is 200L/d that thickening sludge water is processed the water yield.Thickening sludge water and the positive phosphorus concentration of deep dehydration sludge water are respectively 10.32mg/L and 0.08mg/L, Ca
2+concentration is respectively 72.54mg/L and 3057.11mg/L.The former water of thickening sludge water enters filtering unit A by thickening sludge water water-in 1, first through 150 order microgrids, then filters hydraulic detention time 30min, sludge discharging period 2h through 500 order microgrids.Thickening sludge water filters water outlet and filters out the mouth of a river 4 from thickening sludge water and enter hybrid reaction unit B, with the deep dehydration sludge water being entered by deep dehydration sludge water water-in 5 at stirring intensity G=100s
-1three leaf paddle stirrers under evenly mix, hydraulic detention time 30min.The phosphorous solid product generating after reaction enters precipitation unit C under gravity and hydraulics effect, solid-liquid separation, solid precipitation accumulates in bottom, and collect mouthful 8 discharges from throw out, sludge discharging period 4h, reacted purification sludge water is by purifying sludge water outlet 7 turnover, hydraulic detention time 45min.
Under different deep dehydration sludge waters and thickening sludge water volume compare, adopt respectively conventional art and utilize this reactor to carry out close-coupled processing deep dehydration sludge water and thickening sludge water,
Traditional thickening technical finesse refers to: in thickening sludge water, add after the coagulating agent such as aluminium salt, molysite or polyacrylamide, adopt the mode of stirring reaction and throw out deposition to process thickening sludge water.This technology not only needs to add a large amount of medicaments, and suspended substance in sludge liquid can cause dephosphorization efficiency by using to decline, and a large amount of mud flcos enter throw out, cause throw out phosphorus content lower.
The dephosphorization efficiency by using of the thickening sludge water before and after employing deep dehydration sludge water processing solid-liquid separation as shown in Figure 2, X-coordinate in figure: dark/dense expression deep dehydration sludge water and thickening sludge water volume ratio, former water refers to the thickening sludge water without solid-liquid separation processing, and supernatant liquor refers to solid-liquid separation thickening sludge water after treatment.
Process two kinds of supernatant liquors that sludge water obtains with this integrated reactor, the dephosphorization efficiency by using under dephosphorization efficiency by using mixes containing high concentration suspended matter sludge water apparently higher than tradition.After deep dehydration sludge water and thickening sludge water volume are than 8% time, increase filter assemblies, dephosphorization efficiency by using is increased to 92.2% by 82.4%, generates throw out phosphorus content (with P
2o
5meter) be increased to 16.8% by 10.3%, the rising of throw out phosphorus content is more conducive to the recycling of phosphorus.
The above is only giving an example of embodiments of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (6)
1. the reactor of close-coupled processing deep dehydration sludge water and thickening sludge water, it is characterized in that, this reactor comprises filtering unit, hybrid reaction unit and the precipitation unit of integrated setting, described filtering unit is provided with thickening sludge water water-in, thickening sludge water mud discharging mouth, filter assemblies and thickening sludge water and filters out the mouth of a river, described hybrid reaction unit is provided with deep dehydration sludge water water-in and agitator, and described precipitation unit is provided with throw out and collects mouth and purify sludge water outlet;
Thickening sludge water enters into filtering unit from thickening sludge water water-in, after filtration after components apart, particulate matter is trapped, and discharge from thickening sludge water mud discharging mouth, thickening sludge water filtration water outlet filters out the mouth of a river from thickening sludge water and enters into hybrid reaction unit, react with the deep dehydration sludge water mix and blend entering from deep dehydration sludge water water-in, the precipitation forming is collected a mouthful discharge by throw out, supernatant liquor, for purifying sludge water, is discharged from purifying sludge water outlet.
2. the reactor of close-coupled processing deep dehydration sludge water according to claim 1 and thickening sludge water, it is characterized in that, described thickening sludge water water-in and thickening sludge water mud discharging mouth are located at the downside of filter assemblies, and described thickening sludge water filters out the mouth of a river and be located at the upside of filter assemblies.
3. the reactor of close-coupled processing deep dehydration sludge water according to claim 1 and 2 and thickening sludge water, is characterized in that, described filter assemblies is filtering net.
4. the reactor of close-coupled processing deep dehydration sludge water according to claim 3 and thickening sludge water, is characterized in that, described filtering net is bilayer structure, and downside is 150 order filtering nets, and upside is 500 order filtering nets.
5. the reactor of close-coupled processing deep dehydration sludge water according to claim 1 and thickening sludge water, it is characterized in that, described filtering unit is a cone-shaped body, described hybrid reaction unit and precipitation unit share a cone-shaped body, and the bottom of hybrid reaction unit is communicated with precipitation unit.
6. the reactor of close-coupled processing deep dehydration sludge water according to claim 1 and thickening sludge water, is characterized in that, described agitator is three leaf paddle stirrers.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036488A (en) * | 2015-08-21 | 2015-11-11 | 上海电力学院 | Comprehensive sludge water treatment system |
| CN105417785A (en) * | 2015-12-10 | 2016-03-23 | 上海电力学院 | Reaction device and method for treating high-concentration phosphorus-containing wastewater |
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| CN2565816Y (en) * | 2002-07-29 | 2003-08-13 | 罗德春 | Special equipment for separating oil and mud |
| CN201193213Y (en) * | 2008-01-31 | 2009-02-11 | 上海峰渡水净化工程有限公司 | Multifunctional integral water purifying device |
| CN201347392Y (en) * | 2008-12-30 | 2009-11-18 | 福州制来水设备有限公司 | Integral water purifier for muddy water circulation accelerated reaction |
| CN202538427U (en) * | 2012-03-02 | 2012-11-21 | 江苏恒博环境工程设备有限公司 | Sludge concentration sludge collector |
| CN103449628A (en) * | 2013-08-05 | 2013-12-18 | 上海电力学院 | Method for removing phosphorus in concentred and dewatered sludge water by virtue of deeply-dewatered sludge water |
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2014
- 2014-02-12 CN CN201410049155.4A patent/CN103771626B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2565816Y (en) * | 2002-07-29 | 2003-08-13 | 罗德春 | Special equipment for separating oil and mud |
| CN201193213Y (en) * | 2008-01-31 | 2009-02-11 | 上海峰渡水净化工程有限公司 | Multifunctional integral water purifying device |
| CN201347392Y (en) * | 2008-12-30 | 2009-11-18 | 福州制来水设备有限公司 | Integral water purifier for muddy water circulation accelerated reaction |
| CN202538427U (en) * | 2012-03-02 | 2012-11-21 | 江苏恒博环境工程设备有限公司 | Sludge concentration sludge collector |
| CN103449628A (en) * | 2013-08-05 | 2013-12-18 | 上海电力学院 | Method for removing phosphorus in concentred and dewatered sludge water by virtue of deeply-dewatered sludge water |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036488A (en) * | 2015-08-21 | 2015-11-11 | 上海电力学院 | Comprehensive sludge water treatment system |
| CN105417785A (en) * | 2015-12-10 | 2016-03-23 | 上海电力学院 | Reaction device and method for treating high-concentration phosphorus-containing wastewater |
| CN105417785B (en) * | 2015-12-10 | 2018-03-13 | 上海电力学院 | A kind of reaction unit and method for handling high-concentration phosphorus-containing wastewater |
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Address after: 200090 Pingliang Road, Shanghai, No. 2103, No. Patentee after: Shanghai Electric Power University Address before: 200090 Pingliang Road, Shanghai, No. 2103, No. Patentee before: SHANGHAI University OF ELECTRIC POWER |
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Effective date of registration: 20201028 Address after: The 100035 Beijing Seahawks Fengtai District Science City Road No. 9 Building No. 2 room 313 Patentee after: HUADIAN WATER ENGINEERING Co.,Ltd. Address before: 200090 Pingliang Road, Shanghai, No. 2103, No. Patentee before: Shanghai Electric Power University |
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Effective date of registration: 20201216 Address after: 100070 Unit 601-1, Unit 1, Building 1, No. 6 Courtyard, East Road, Automobile Museum, Fengtai District, Beijing Patentee after: Huadian Water Technology Co.,Ltd. Patentee after: HUADIAN WATER ENGINEERING Co.,Ltd. Address before: Room 313, building 2, No.9, Haiying Road, Science City, Fengtai District, Beijing 100035 Patentee before: HUADIAN WATER ENGINEERING Co.,Ltd. |
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