CN103771626B - 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 PDF

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CN103771626B
CN103771626B CN201410049155.4A CN201410049155A CN103771626B CN 103771626 B CN103771626 B CN 103771626B CN 201410049155 A CN201410049155 A CN 201410049155A CN 103771626 B CN103771626 B CN 103771626B
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sludge water
water
thickening
unit
reactor
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CN103771626A (en
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周振
胡大龙
任伟超
乔卫敏
沈雪莲
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HUADIAN WATER ENGINEERING Co.,Ltd.
Huadian Water Technology Co.,Ltd.
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Shanghai University of Electric Power
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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

The reactor of close-coupled processing deep dehydration sludge water and thickening sludge water
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
Be that the dirty water living creature processing technique of representative can discharge a large amount of water ratio higher than the excess sludge of 99% while sewage purification with activated sludge process, realize by sludge condensation and dehydration the conventional sludge treatment technique that reducing sludge volume is sewage work.The waste water produced in sludge condensation and dehydration, 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 about 80% can not meet landfill requirement, and mud need reach water ratio less than 60% through further conditioning and deep dehydration just can carry out landfill.In deeply dehydrating sludge treatment process, FeCl need be added in mud 3, unslaked lime etc. nurses one's health, discharge Bound moisture, planar water and internal water by cell wall breaking, improve the dewatering of mud, then high-pressure compressing dehydration to water ratio lower than 60%, special conditions reaches less than 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 produced in deeply dehydrating sludge process, is called deep dehydration sludge water.
Along with Sludge landfill disposes raising to water content requirement, the deep dehydration mud water yield rises to 8220t/d in 2013 from the 220t/d of 2006, and engineering quantity rises to 37 in 2013 from 2006 1.At present, most of large-scale wastewater treatment plant has thickening sludge water and deep dehydration sludge water two kinds of sludge waters.In thickening sludge water, suspended substance, organism and positive phosphorus concentration are higher, deep dehydration mud Organic substance in water and Ca 2+ionic concn is higher.By deep dehydration sludge water and the mixing of thickening sludge water, the Ca in deep dehydration sludge water 2+the precipitation such as calcium phosphate and hydroxyapatite can be generated with the positive phosphorus reaction in thickening sludge water, go back part that can be removed organism simultaneously.But thickening sludge water suspended solids is higher, two kinds of sludge waters directly mix not only can reduce contaminant removal efficiency, and in the solid formed, available phosphorus content is lower, is unfavorable for recycling.
Summary of the invention
Object of the present invention be exactly provide that a kind of structure is simple to overcome defect that above-mentioned prior art exists, the reactor of the significant close-coupled processing deep dehydration sludge water of wastewater treatment efficiency and thickening sludge water.
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 the filtering unit of integrated setting, hybrid reaction unit and precipitation unit, 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 the outlet of purification sludge water;
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 entered from deep dehydration sludge water water-in, the precipitation formed is collected mouth by throw out and is discharged, supernatant liquor is purification sludge water, discharges from the outlet of purification sludge water.
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 upside that the mouth of a river is located at 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 blade propeller agitator.
Utilize the concrete steps of reactor of the present invention close-coupled processing deep dehydration sludge water and thickening sludge water as follows:
First thickening sludge water enters filtering unit from thickening sludge water water-in and flows from bottom to top, through filter assemblies (small-bore filter screen), macrobead in thickening sludge water can directly sedimentation in this unit, small-particle then 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 then pumps into hybrid reaction unit according to certain flow ratio, the Ca in deep dehydration sludge water 2+the PO in water outlet is filtered 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 that water outlet and the reaction of deep dehydration sludge water formed can sedimentation under gravity, and collect mouth by throw out and discharge, supernatant liquor is purification sludge water, discharges from the outlet of purification sludge water.
Compared with prior art, the present invention eliminates the suspended solids of thickening sludge water more than 95% due to effective filter, delivery turbidity is lower than 5NTU, again with deep dehydration sludge water hybrid reaction, not only pollutant removal can be improved, and generation throw out phosphorus content also significantly improves, and is 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 and thickening sludge water volume ratio, 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 filter out the mouth of a river for thickening sludge water, and 5 is deep dehydration sludge water water-in, and 6 is agitator, 7 is the outlet of purification sludge water, and 8 is throw out collection mouth.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
The reactor of close-coupled processing deep dehydration sludge water and thickening sludge water, as shown in Figure 1, this reactor comprises the filtering unit A of integrated setting, hybrid reaction unit B and precipitation unit C, 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, precipitation unit C and is provided with throw out and collects mouth 8 and purify sludge water and export 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 upside that the mouth of a river 4 is located at 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 blade propeller agitator.
Utilize the concrete steps of this reactor close-coupled processing deep dehydration sludge water and thickening sludge water as follows:
First thickening sludge water enters filtering unit A from thickening sludge water water-in 1 and flows from bottom to top, through filter assemblies 3 (small-bore filter screen), macrobead in thickening sludge water can directly sedimentation in this unit, small-particle then 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 then 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 blade propeller agitator, temperature field, the rapid Homogeneous phase mixing of concentration field, fully react after certain hydraulic detention time, the Ca in deep dehydration sludge water 2+the PO in water outlet is filtered 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 that water outlet and the reaction of deep dehydration sludge water formed can sedimentation under gravity, and collect mouth 8 by throw out and discharge, supernatant liquor is purification sludge water, discharge from purification sludge water outlet 7, enter follow-up system.
Embodiment 2
The close-coupled processing deep dehydration sludge water utilizing embodiment 1 to describe and the reactor of thickening sludge water, carried out deep dehydration sludge water process thickening sludge water test in place in Shanghai City Bai Longgang sewage work, the thickening sludge water process water yield is 200L/d.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 through 500 order microgrids, hydraulic detention time 30min, sludge discharging period 2h.Thickening sludge water filtration water outlet filters out the mouth of a river 4 from thickening sludge water and enters hybrid reaction unit B, with the deep dehydration sludge water entered by deep dehydration sludge water water-in 5 at stirring intensity G=100s -1three blade propeller agitator under Homogeneous phase mixing, hydraulic detention time 30min.The phosphorous solid product generated after reaction enters precipitation unit C under gravity and hydraulics effect, solid-liquid separation, solid precipitation accumulates in bottom, and discharge from throw out collection mouth 8, sludge discharging period 4h, reacted purification sludge water exports 7 turnover, hydraulic detention time 45min by purifying sludge water.
Under different deep dehydration sludge waters and thickening sludge water volume ratio, adopt conventional art respectively and utilize this reactor to carry out close-coupled processing deep dehydration sludge water and thickening sludge water,
Traditional thickening technical finesse refers to: add the coagulating agent such as aluminium salt, molysite or polyacrylamide in thickening sludge water after, adopts the mode of stirring reaction and depositions settle to process thickening sludge water.This technology not only needs to add a large amount of medicaments, and the suspended substance in sludge liquid can cause dephosphorization efficiency by using to decline, and a large amount of mud flco enters throw out, causes throw out phosphorus content lower.
Adopt the dephosphorization efficiency by using of the thickening sludge water before and after deep dehydration sludge water process 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 process, and supernatant liquor refers to the thickening sludge water after solid-liquid separation process.
With the supernatant liquor that this integrated reactor process two kinds of sludge waters obtain, the dephosphorization efficiency by using under dephosphorization efficiency by using mixes apparently higher than tradition containing high concentration suspended matter sludge water.When deep dehydration sludge water and thickening sludge water volume ratio 8%, after increasing 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 the citing of embodiments of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from 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 (4)

1. the reactor of close-coupled processing deep dehydration sludge water and thickening sludge water, it is characterized in that, this reactor comprises the filtering unit of integrated setting, hybrid reaction unit and precipitation unit, 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 the outlet of purification sludge water;
Described filtering unit, hybrid reaction unit and precipitation unit are arranged side by side;
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 upside that the mouth of a river is located at filter assemblies;
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;
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 entered from deep dehydration sludge water water-in, the precipitation formed is collected mouth by throw out and is discharged, supernatant liquor is purification sludge water, discharges from the outlet of purification sludge water.
2. the reactor of close-coupled processing deep dehydration sludge water according to claim 1 and thickening sludge water, is characterized in that, described filter assemblies is filtering net.
3. the reactor of close-coupled processing deep dehydration sludge water according to claim 2 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.
4. 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 blade propeller agitator.
CN201410049155.4A 2014-02-12 2014-02-12 Reactor for integrally treating deeply-dehydrated sludge water and concentrated and dehydrated sludge water Active CN103771626B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105036488B (en) * 2015-08-21 2017-03-01 上海电力学院 A kind of sludge water total system
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

Citations (5)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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

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