CN107382027A - A kind of fast dewatering curing for the alum sludge pool - Google Patents
A kind of fast dewatering curing for the alum sludge pool Download PDFInfo
- Publication number
- CN107382027A CN107382027A CN201710719325.9A CN201710719325A CN107382027A CN 107382027 A CN107382027 A CN 107382027A CN 201710719325 A CN201710719325 A CN 201710719325A CN 107382027 A CN107382027 A CN 107382027A
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- CN
- China
- Prior art keywords
- sludge
- complex filter
- fast dewatering
- water
- curing
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- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of fast dewatering curing for the alum sludge pool, this method, by carrying out dehydration modification to sludge to adding medicament in sludge lagoon, upper strata clear water is discharged after mud-water separation, then complex filter is inserted in the dense mud of separation, complex filter and vavuum pump are connected using pipeline, dense mud top layer covers antiseepage film, and vacuum pump drainage is directly entered antiseepage film surface.After opening vacuum-pump power supply, the water outlet of complex filter is drained into by antiseepage film surface by suction function and forms gravitional force to sludge blanket, promotes the fast dewatering of sludge blanket.Invention has the advantages of high efficiency, speed is fast, total energy consumption is low, can be inexpensive, and large-scale is applied in the sludge dewatering solidification engineering of waterworks.
Description
Technical field
The present invention relates to sludge in-situ process field, is related specifically to one kind and is removed certainly using vacuum filter and gravity compressed
Carry out the method for waterworks sludge class moisture, it is specifically a kind of to utilize medicament and the method on the complex filter solidification sludge pool.
Background technology
In running water production process, because follow-up sludge treatment technique can not effectively follow up, to ensure production process
Continuity, water factory's aspect can build sludge lagoon with interim storage sludge, pass through natural sedimentation and moisture evaporation concentrates waterworks
Sludge, when sludge dewatering to a certain extent after, by delivering to Treatment of Sludge place outside dredging vehicle.In the course of time, it is this to set temporarily
Apply and reformed into long-term Treatment of Sludge measure, occupy very big land resource, at the same also bring serious potential safety hazard and
Environmental and ecological problems.
Based on inorganic matter, main component adds alum sludge for the fine particle carried in water source and waterworks
The medicament added（Based on aluminium salt）Sediment etc., particulate matter fineness is very thin, based on micron and nano-scale particle, sludge settling
Property is poor, while the specific impedance of sludge is big, and dewatering is poor.For the processing for the sludge lagoon for storing such sludge, main method is pressed
For in major class, it is divided into the processing of in situ and dystopy, in-situ treatment refers to carry out scene to sludge lagoon using physico-chemical process
Processing disposal, dewater treatment is mainly carried out to sludge by curing agent；Dystopy processing refer to by engineering means by sludge from
Separate and handled in sludge lagoon, mainly by add medicament improve dewatering after, utilize plant equipment（Sheet frame pressure
Filter, belt thickener machine, centrifuge etc.）Dewater treatment is carried out to sludge.No matter in situ or dystopy is handled, the sludge after dehydration
Appropriate disposal or recycling need to be carried out.In general, in-situ treatment expense is than relatively low, and dewatered sludge do not reach recycling or
The water content of processing requirement is disposed, and dystopy processing can reach the moisture content of processing disposal, but relative disposal costs are higher.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, there is provided one kind is using medicament and complex filter as technology master
Body, improve the dewatering of alum sludge by adding medicament, it is quick from sludge lagoon using negative pressure of vacuum as power source
Remove moisture.
The purpose of the present invention is achieved through the following technical solutions：
A kind of fast dewatering curing for the alum sludge pool, this method include step in detail below：
Step 1：Sludge conditioning
By to adding medicament in sludge lagoon, using circulating pump to be flowed back to promote sludge to mix and react with medicament, treating mud
Upper strata clear water is discharged after water separation；
Step 2：Sludge vacuum is dehydrated
In the dense mud that complex filter inserting step 1 is isolated, complex filter is connected with vavuum pump using pipeline, dense mud
Top layer covering antiseepage film forms confined space；After opening vacuum-pump power supply, the water outlet of complex filter is led to by suction function
Cross vavuum pump and drain into antiseepage film surface, form the gravitional force to sludge blanket, promote the fast dewatering of sludge blanket.
Medicament is added described in step 1 as the one or more in molysite, aluminium salt, calcium salt, polyacrylamide；Add medicament with
Sludge butt adds part by weight as 1:100-10000.
The complex filter of the step 2 is tubular structure, be respectively from internal layer to outer layer water-permeable pipe, hyperfiltration membrane assembly,
Connecting interface is left on nonwoven layer, drainage layer and nonwoven layer, water-permeable pipe top.
A diameter of 10-50mm of the complex filter, length 500-3000mm.
The complex filter is arranged in parallel, and array installation, spacing is maintained at 10-1000mm.
The vacuum pump pressure is 10-5000Pa；Single tube water velocity is 1-100m/h.
Beneficial effects of the present invention：
Improve the dewatering of sludge by way of adding medicament, make sludge fast dewatering using gravity and negative pressure, reach dirty
Mire sludge fast dewatering and the purpose of solidification.
The present invention needs fully to be mixed with sludge when medicament is added, and fully passes through downflow weir draining after reaction.
Treat that sludge passes through after dehydrating and curing, carry out excavating transhipment landfill or recycling, realize the final disposal of sludge.The present invention is to certainly
Carrying out water factory's sludge lagoon sludge dewatering has the characteristics that efficiency high, time are short, energy consumption is low, overall operation processing cost is low, can be achieved
Scale practical application.
Brief description of the drawings
Fig. 1 is schematic diagram of the embodiment of the present invention；
Fig. 2 is complex filter structural representation of the embodiment of the present invention；
Fig. 3 is complex filter stereogram of the embodiment of the present invention；
In Fig. 1,1- antiseepage films, 2- peripheries soil, 3- sludge to be drained off, 4- complex filters, 5- vavuum pumps, 6- drainpipes, 7-
Preserved pipeline interface；
In Fig. 2, Fig. 3,41- water-permeable pipes, 42- hyperfiltration membrane assemblies, 43- nonwoven layers, 44- drainage layers, 45- nonwoven layers, 46- companies
Connection interface.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention is described in detail.
The present invention includes sludge conditioning and sludge vacuum is dehydrated, wherein, sludge conditioning detailed process is：By to sludge lagoon
Medicament is inside added, uses circulating pump to be flowed back to promote sludge to mix and react with medicament, upper strata is discharged after mud-water separation
Clear water.Sludge vacuum is dehydrated detailed process：After medicament is added to sludge lagoon and carries out separation of solid and liquid, complex filter 4 is put
In sludge 3 to be drained off, antiseepage film 1 is covered on sludge 3 to be drained off, and closed environment, vavuum pump 5 are formed with peripheral soil 2
Connected by vacuum tube with the preserved pipeline interface 7 on complex filter 4, after connecting power supply, vavuum pump 5 is that closed environment carries
For negative pressure, water outlet is discharged into antiseepage film 1 by drainpipe 6 and forms gravitional force, promotes the further dehydration of sludge 3 to be drained off.
The complex filter 4 of the present invention is tubular structure, is respectively water-permeable pipe 41, hyperfiltration membrane assembly from internal layer to outer layer
42nd, connecting interface 46 is left on nonwoven layer 43, drainage layer 44 and nonwoven layer 45, water-permeable pipe top.
Embodiment
Refering to Fig. 1, for the pilot scale plant schematic diagram of certain alum sludge pool dehydrating and curing.Before dehydration experiment is carried out,
Analyzed by field sampling, obtain the moisture content and main component parameter of sludge, estimate sludge lagoon sludge quantity, and on this basis
Sludge dewatering agent is configured, sludge specific resistance experiment is carried out, determines the best dosage.According to the best dosage to pilot scale
Sludge lagoon adds medicament, is flowed back using sludge pump, fully after reaction, discharges upper strata clear water, while dense mud is dehydrated
Solidification.Dehydrating and curing process：Complex filter 4 is placed in sludge 3 to be drained off, antiseepage film 1 is covered on sludge 3 to be drained off,
Closed environment is formed with peripheral soil 2, vavuum pump 5 passes through vacuum tube and the phase of preserved pipeline interface 7 on complex filter 4
Connect, open vavuum pump 5, water outlet is discharged into antiseepage film 1 by drainpipe 6.The opening ways of vavuum pump 5 are to be grasped with high negative pressure early stage
Make, to promote sludge dewatering, power should be reduced in the later stage, promote sludge dewatering to solidify using gravity and negative pressure synergy.Should
System has basically reached the relevant regulations of outward transport in two weeks.
Claims (6)
1. a kind of fast dewatering curing for the alum sludge pool, it is characterised in that this method is included in detail below
Step：
Step 1：Sludge conditioning
By to adding medicament in sludge lagoon, using circulating pump to be flowed back to promote sludge to mix and react with medicament, treating mud
Upper strata clear water is discharged after water separation；
Step 2：Sludge vacuum is dehydrated
In the dense mud that complex filter inserting step 1 is isolated, complex filter is connected with vavuum pump using pipeline, dense mud
Top layer covering antiseepage film forms confined space；After opening vacuum-pump power supply, the water outlet of complex filter is led to by suction function
Cross vavuum pump and drain into antiseepage film surface, form the gravitional force to sludge blanket, promote the fast dewatering of sludge blanket.
2. fast dewatering curing as claimed in claim 1, it is characterised in that：Medicament is added described in step 1 as molysite, aluminium
One or several kinds in salt, calcium salt, polyacrylamide；The weight ratio for adding medicament and sludge butt is 1:100-10000.
3. fast dewatering curing as claimed in claim 1, it is characterised in that：The complex filter of the step 2 is pipe
Formula structure, is respectively water-permeable pipe, hyperfiltration membrane assembly, nonwoven layer, drainage layer and nonwoven layer from internal layer to outer layer, on water-permeable pipe
Leave connecting interface in portion.
4. fast dewatering curing as claimed in claim 1, it is characterised in that：A diameter of 10- of the complex filter
50mm, length 500-3000mm.
5. fast dewatering curing as claimed in claim 1, it is characterised in that：The complex filter is arranged in parallel, battle array
Row installation, spacing are maintained at 10-1000mm.
6. fast dewatering curing as claimed in claim 1, it is characterised in that：The vacuum pump pressure is 10-5000Pa；
Single tube water velocity is 1-100m/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710719325.9A CN107382027A (en) | 2017-08-21 | 2017-08-21 | A kind of fast dewatering curing for the alum sludge pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710719325.9A CN107382027A (en) | 2017-08-21 | 2017-08-21 | A kind of fast dewatering curing for the alum sludge pool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107382027A true CN107382027A (en) | 2017-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710719325.9A Pending CN107382027A (en) | 2017-08-21 | 2017-08-21 | A kind of fast dewatering curing for the alum sludge pool |
Country Status (1)
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| CN (1) | CN107382027A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915060A (en) * | 2018-07-09 | 2018-11-30 | 北京中岩大地科技股份有限公司 | A kind of dewatering of big scale of construction high-moisture low-permeability waste residue |
| CN114315063A (en) * | 2022-01-05 | 2022-04-12 | 三峡大学 | Sludge curing device and sludge curing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06269799A (en) * | 1993-03-17 | 1994-09-27 | Nkk Corp | Treatment of sludge |
| CN101759342A (en) * | 2009-12-09 | 2010-06-30 | 华侨大学 | Sludge vacuum subcharge combined compressing and dewatering device |
| CN103866757A (en) * | 2014-04-10 | 2014-06-18 | 宜兴市良旭焊接瓷件有限公司 | Soil dehydration desiccation or solidification method |
| CN103435245B (en) * | 2013-08-13 | 2014-07-23 | 浙江大学 | In-situ chemical conditioning and vacuum preloading reduction method and conditioning device for landfill sludge |
-
2017
- 2017-08-21 CN CN201710719325.9A patent/CN107382027A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06269799A (en) * | 1993-03-17 | 1994-09-27 | Nkk Corp | Treatment of sludge |
| CN101759342A (en) * | 2009-12-09 | 2010-06-30 | 华侨大学 | Sludge vacuum subcharge combined compressing and dewatering device |
| CN103435245B (en) * | 2013-08-13 | 2014-07-23 | 浙江大学 | In-situ chemical conditioning and vacuum preloading reduction method and conditioning device for landfill sludge |
| CN103866757A (en) * | 2014-04-10 | 2014-06-18 | 宜兴市良旭焊接瓷件有限公司 | Soil dehydration desiccation or solidification method |
Non-Patent Citations (1)
| Title |
|---|
| 高艳玲: "《城市污水处理技术及工艺运行管理》", 31 July 2012, 北京：中国建材工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915060A (en) * | 2018-07-09 | 2018-11-30 | 北京中岩大地科技股份有限公司 | A kind of dewatering of big scale of construction high-moisture low-permeability waste residue |
| CN114315063A (en) * | 2022-01-05 | 2022-04-12 | 三峡大学 | Sludge curing device and sludge curing method |
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Application publication date: 20171124 |