CN110482832A - A kind of sludge from wastewater treatment plant is dry, stabilizes and recycling processing method - Google Patents
A kind of sludge from wastewater treatment plant is dry, stabilizes and recycling processing method Download PDFInfo
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- CN110482832A CN110482832A CN201910772916.1A CN201910772916A CN110482832A CN 110482832 A CN110482832 A CN 110482832A CN 201910772916 A CN201910772916 A CN 201910772916A CN 110482832 A CN110482832 A CN 110482832A
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- sludge
- desulphurization
- fecl
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- drying
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- 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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- 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
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
-
- 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
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
- C02F11/145—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances using calcium compounds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (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)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of sludge from wastewater treatment plant drying, stabilisation and recycling processing methods, it is related to technical field of sewage, its key points of the technical solution are that: the following steps are included: 1) Treatment of Sludge raw material preparation, chooses the raw material of Desulphurization and Fecl3 as sludge conditioning；2) Desulphurization and Fecl are determined3Dosage；3) sludge conditioning using successive addition method or mixes addition method for Desulphurization and Fecl3Investment improves sludge into sludge；4) sludge dewatering is carried out dehydrating sludge using press mold dehydration device；5) drying sludge carries out deep dehydration to sludge using Single-channel Rolling formula drying machine；6) Indexs measure is analyzed, and is tested and analyzed to indexs such as the moisture content, content of beary metal and pH value of clod.The moisture content of treated sludge is enabled to meet the requirements, and in the process of processing, without secondary pollution and highly-safe, Treatment of Sludge is at low cost to sludge, and product resourcebility utilizes after sludge drying.
Description
Technical field
The present invention relates to technical field of sewage, more specifically, it relates to which a kind of sludge from wastewater treatment plant is dry
Dry, stabilisation and recycling processing method.
Background technique
In recent years, with the quickening of China's economic development and urbanization process, the municipal drainage and sewage treatment in China
Infrastructure construction has been made significant headway, and the quantity of sewage treatment plant increases to 4063 in 2017 from 35 of 1977
Seat, sewage treatment capacity rise to daily processing sewage nearly 1.78 in 2017 from past daily more than 100 ten thousand tons of sewage of processing
Billion cubic meter/day, wastewater treatment rate are up to 90% or more.It may be said that four during the decade, wastewater treatment in China industry obtained across
More formula develops, and sewage treatment plant's quantity is nearly 120 times before 40 years, and day sewage treatment capacity promotes 4 orders of magnitude.With
The ability of the construction of sewage treatment plant all over China, water pollution control continues to increase, and the environmental problem of association at the same time is
Sludge yield is increasing, and relevant speciality department prediction data is shown, the sludge yield of coming years China will also be a large amount of
Increase.Now, the processing disposition of sludge has become new difficult point and new challenge in comprehensive environmental improvement work.
The processing of sludge is extremely urgent, the coke which has become government, industry specialists, the public pay close attention to jointly
Point.The target that sludge problem has built beautiful China with China is runed counter to, it is necessary to be taken effective technological means, be solved this
Environmental problem.Municipal sludge is a kind of special solid waste, how yield is huge, complicated component sewage sludge harmlessness, money
Source realizes that sludge " turning waste into wealth " is the developing direction and trend of sludge joint disposal now.
Currently, Chinese specific resistance to filtration level is lower, sludge is after conventional thickening, due to moisture content mistake
The requirements for sale of refuse landfill is not achieved in height, much all directly throws aside in the natural environment.Treatment of Sludge in the prior art
Method does not reach the requirement of sludge " minimizing, stabilisation, innoxious and recycling ", be easy to cause secondary environmental pollution, makes
Pollution sources are obtained further to shift.Meanwhile sludge cannot properly dispose the normal operation for also having seriously affected sewage treatment plant, greatly
The place to go problem for measuring 80% sludge of moisture content after mechanical dehydration, at the technical problem of many sewage plants of puzzlement.
Summary of the invention
That the object of the present invention is to provide a kind of sludge from wastewater treatment plant is dry, stabilizes and recycling processing method,
Enable to the moisture content of treated sludge to meet the requirements, and to sludge in the process of processing, it is without secondary pollution
And it is highly-safe, Treatment of Sludge is at low cost, and product resourcebility utilizes after sludge drying.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of municipal sewage plant is dirty
Mud drying, stabilisation and recycling processing method, comprising the following steps:
1) Treatment of Sludge raw material preparation chooses the former material of Desulphurization and Fecl3 as sludge conditioning in sludge handling process
Material；
2) Desulphurization and Fecl are determined3Dosage, according to municipal sewage plant's concentration basin moisture percentage in sewage sludge, in Desulphurization
With Fecl3Under conditions of mass ratio is 5:1, calculated respectively using Desulphurization when successive addition method and mixing addition method and Fecl3's
Dosage；
3) sludge conditioning, according to the Desulphurization and Fecl determined in step 2)3Dosage, using successive addition method or mixed
Addition method is closed by Desulphurization and Fecl3Investment improves sludge into sludge；
4) sludge dewatering is carried out dehydrating sludge using press mold dehydration device；
5) drying sludge carries out deep dehydration to sludge using Single-channel Rolling formula drying machine, obtains dehydration rate≤60%
Clod；
6) Indexs measure is analyzed, according to CJT249-2007 " urban sewage treatment plant sludge disposes blended landfill shale " mark
Standard, referring to CJ/T221-2005 " the sludge from wastewater treatment plant method of inspection ", test and analyze the moisture content of clod in step 5),
The indexs such as content of beary metal and pH value.
No biotoxicity is utilized by the preparation of the Treatment of Sludge raw material of step 1) by using above-mentioned technical proposal
Desulphurization, convenient for improve sludge dewatering；Utilize Fecl3, convenient for as traditional Ferric Salt Flocculants, so that
Fecl3The cation that dissociation obtains is positively charged, which attracts each other and neutralize with the negative electrical charge on mud granule, so that
The charge of sludge reduces, and reduces the repulsive force in sludge between particle, increases intergranular absorption, and reduce particle and
The affinity of hydrone, makes particle increase the cohesion and coarsening, so as to improve the deposition dehydrating performance of sludge；By step 2)
The Desulphurization and Fecl of middle determination3Dosage, convenient for determining Desulphurization and Fecl3Optimal dosage changes consequently facilitating improving
The quality of kind dewatering performance of sludge；By step 3), by determining Desulphurization and Fecl3Optimal dosage, using successive
Addition method mixes addition method for Desulphurization and Fecl3Investment is improved into sludge convenient for the dewatering to sludge；It is logical
It crosses step 4) to be carried out dehydrating sludge using press mold dehydration device, convenient for carrying out dehydrating operations to sludge, and dirt can be made
The dehydration rate of mud reaches 40% or more, so that meeting the requirements to the dehydration rate of sludge sludge in the process of processing；It is logical
Cross step 5) using Single-channel Rolling formula drying machine to sludge carry out deep dehydration, convenient for carry out dehydrating operations after sludge into
The operation of row deep dehydration；It is analyzed by step 6) Indexs measure, is contained convenient for moisture content, the heavy metal to the sludge handled
The indexs such as amount and pH value are tested and analyzed, to guarantee the quality handled sludge；Pass through step 1) to step 6)
Sludge from wastewater treatment plant it is dry, stabilize and recycling processing method, enable to the aqueous of treated sludge
Rate is met the requirements, and to sludge, in the process of processing, without secondary pollution and highly-safe, Treatment of Sludge is at low cost, and
And product resourcebility utilizes after sludge drying.
The present invention is further arranged to: the Desulphurization in step 1) is that the Desulphurization that steel mill directly takes or stockyard are placed for a long time
Desulphurization afterwards.
By using above-mentioned technical proposal, the Desulphurization directly taken by steel mill or stockyard Desulphurization after a long time placement, energy
Enough improve the dewatering of sludge using the main component CaO in Desulphurization；Pass through, the Desulphurization or heap directly taken using steel mill
Field Desulphurization after a long time placement, reduces the cost handled sludge.
The present invention is further arranged to: the specific steps of successive addition method described in step 3) are as follows: 200ml sludge is taken,
It is firstly added Desulphurization in sludge, and quickly stirs 30s under conditions of revolving speed is 350rmin-1, stands 10min, so
After add Fecl3, and 30s is quickly stirred under conditions of revolving speed is 350rmin-1, it is then 50rmin- in revolving speed
15min is mixed slowly under conditions of 1, stands 30min.
Fecl is added by the way that Desulphurization is first added by using above-mentioned technical proposal3Successive addition method, convenient for pair
The dewatering of sludge is improved.
The present invention is further arranged to: the specific steps of addition method are mixed described in step 3) are as follows: 200ml sludge is taken,
Desulphurization and Fecl are added in sludge3Mixture, and revolving speed be 350rmin-1 under conditions of quickly stir 30s, so
15min is mixed slowly under conditions of revolving speed is 50rmin-1 afterwards, stands 30min.
By using above-mentioned technical proposal, by the way that Desulphurization and Fecl are added in sludge3Mixture, convenient for sludge
Dewatering improved.
In conclusion the invention has the following advantages: the preparation of the Treatment of Sludge raw material by step 1), utilizes
The Desulphurization of no biotoxicity, convenient for improving the dewatering of sludge；Utilize Fecl3, convenient for as traditional molysite wadding
Solidifying agent, so that Fecl3The cation that dissociation obtains is positively charged, and the negative electrical charge on the cation and mud granule is attracted each other simultaneously
It neutralizes, so that the charge of sludge reduces, and reduces the repulsive force in sludge between particle, increases intergranular absorption, and
The affinity for reducing particle and hydrone, makes particle increase the cohesion and coarsening, so as to improve the deposition dehydrating performance of sludge；
Pass through the Desulphurization and Fecl determined in step 2)3Dosage, convenient for determining Desulphurization and Fecl3Optimal dosage, thus
Convenient for improving the quality for improving dewatering performance of sludge；By step 3), by determining Desulphurization and Fecl3Optimal add
Amount using successive addition method or mixes addition method for Desulphurization and Fecl3Investment is into sludge, convenient for the dehydration property to sludge
It can be carried out conditioning；Sludge is carried out dehydrating using press mold dehydration device by step 4), convenient for carrying out dehydration behaviour to sludge
Make, and the dehydration rate of sludge can be made to reach 40% or more, so that the dehydration to sludge sludge in the process of processing
Rate is met the requirements；Deep dehydration is carried out to sludge using Single-channel Rolling formula drying machine by step 5), convenient for being dehydrated
Sludge after operation carries out deep dehydration operation；It is analyzed by step 6) Indexs measure, convenient for containing to the sludge handled
The indexs such as water rate, content of beary metal and pH value are tested and analyzed, to guarantee the quality handled sludge；Pass through step
1) it to sludge from wastewater treatment plant drying, stabilisation and the recycling processing method of step 6), enables to treated
The moisture content of sludge is met the requirements, and to sludge in the process of processing, without secondary pollution and highly-safe, Treatment of Sludge
It is at low cost, and product resourcebility utilizes after sludge drying.
Detailed description of the invention
Fig. 1 is the flow chart in the embodiment of the present invention.
Specific embodiment
Below in conjunction with attached drawing 1, invention is further described in detail.
Embodiment: a kind of sludge from wastewater treatment plant is dry, stabilizes and recycling processing method, as shown in Figure 1, packet
Include following steps:
1) Treatment of Sludge raw material preparation chooses the former material of Desulphurization and Fecl3 as sludge conditioning in sludge handling process
Material.
2) Desulphurization and Fecl are determined3Dosage, according to municipal sewage plant's concentration basin moisture percentage in sewage sludge, in Desulphurization
With Fecl3Under conditions of mass ratio is 5:1, calculated respectively using Desulphurization when successive addition method and mixing addition method and Fecl3's
Dosage.
3) sludge conditioning, according to the Desulphurization and Fecl determined in step 2)3Dosage, using successive addition method or mixed
Addition method is closed by Desulphurization and Fecl3Investment improves sludge into sludge.
4) sludge dewatering is carried out dehydrating sludge using press mold dehydration device.
5) drying sludge carries out deep dehydration to sludge using Single-channel Rolling formula drying machine, obtains dehydration rate≤60%
Clod.
6) Indexs measure is analyzed, according to CJT249-2007 " urban sewage treatment plant sludge disposes blended landfill shale " mark
Standard, referring to CJ/T221-2005 " the sludge from wastewater treatment plant method of inspection ", test and analyze the moisture content of clod in step 5),
The indexs such as content of beary metal and pH value.
In the present embodiment, by the preparation of the Treatment of Sludge raw material of step 1), using the Desulphurization of no biotoxicity,
Convenient for improving the dewatering of sludge, consequently facilitating the stabilization desiccation of sludge.Utilize Fecl3, convenient for as traditional iron
Salt flocculant, so that Fecl3The cation that dissociation obtains is positively charged, and the cation and the negative electrical charge on mud granule are mutually attracting
Draw and neutralize, so that the charge of sludge reduces, and reduces the repulsive force in sludge between particle, increases intergranular suction
It is attached, and the affinity of particle and hydrone is reduced, so that particle is increased the cohesion and coarsening, so as to improve the deposition dehydrating of sludge
Performance.Pass through the Desulphurization and Fecl determined in step 2)3Dosage, convenient for determining Desulphurization and Fecl3It is optimal to add
Amount, consequently facilitating improving the quality for improving dewatering performance of sludge.By step 3), by determining Desulphurization and Fecl3It is best
Dosage, using successive addition method or mixing addition method by Desulphurization and Fecl3Investment is into sludge, convenient for taking off to sludge
It is aqueous to can be carried out conditioning.Sludge is carried out dehydrating using press mold dehydration device by step 4), convenient for being taken off to sludge
Water operation, and can make the dehydration rate of sludge reach 40% or more, so as to sludge sludge in the process of processing
Dehydration rate is met the requirements.Deep dehydration is carried out to sludge using Single-channel Rolling formula drying machine by step 5), convenient for progress
Sludge after dehydrating operations carries out deep dehydration operation.It is analyzed by step 6) Indexs measure, convenient for the sludge handled
The indexs such as moisture content, content of beary metal and pH value tested and analyzed, to guarantee the quality handled sludge.Pass through
Step 1) is enabled to sludge from wastewater treatment plant drying, stabilisation and the recycling processing method of step 6) by place
The moisture content of the sludge of reason is met the requirements, and to sludge in the process of processing, without secondary pollution and highly-safe, sludge
Processing cost is low, and product resourcebility utilizes after sludge drying.
Desulphurization in step 1) is the Desulphurization that steel mill directly takes or stockyard Desulphurization after a long time placement.
In the present embodiment, by Desulphurization be the Desulphurization (faint yellow Desulphurization) that directly takes of steel mill or stockyard for a long time
Desulphurization (canescence Desulphurization) two chemical composition, radioactivity and the pH value of Desulphurizations and the survey of content of beary metal after placement
Examination, test result are as follows: nickel, copper, zinc, lead, chromium, mercury and the arsenic testing result of two kinds of Desulphurizations are well below soil pollution risk
Screening value.And a little higher than risk screening value 0.8mg/kg of the testing result (actual measurement of the heavy metal cadmium of faint yellow Desulphurization
1.24mg/kg), but it is far below farming land soil pollution risk control value 4.0mg/kg.An and opposite huge sum of money with farming land soil
Belonging to prohibitive content requirement, the requirement of sewage sludge after sewage treatment is loosely very much, therefore, the weight for the Desulphurization which directly takes
Tenor meets general operational requirement.Using the Desulphurization or stockyard directly taken by steel mill Desulphurization after a long time placement, energy
Enough improve the dewatering of sludge using the main component CaO in Desulphurization.Pass through, the Desulphurization or heap directly taken using steel mill
Field Desulphurization after a long time placement, reduces the cost handled sludge.
The specific steps of successive addition method in step 3) are as follows: 200ml sludge is taken, Desulphurization is firstly added in sludge,
And 30s is quickly stirred under conditions of revolving speed is 350rmin-1,10min is stood, Fecl is then added3, and in revolving speed be
30s is quickly stirred under conditions of 350rmin-1, then mixes slowly 15min under conditions of revolving speed is 50rmin-1, it is quiet
Set 30min.
In the present embodiment, by the way that Desulphurization is first added, Fecl is added3Successive addition method, convenient for being taken off to sludge
It is aqueous to can be carried out conditioning.
In step 3) mixing addition method specific steps are as follows: take 200ml sludge, in sludge be added Desulphurization and
Fecl3Mixture, and revolving speed be 350rmin-1 under conditions of quickly stir 30s, then revolving speed be 50rmin-1
Under conditions of mix slowly 15min, stand 30min.
In the present embodiment, by the way that Desulphurization and Fecl are added in sludge3Mixture, convenient for the dehydration property to sludge
It can be carried out conditioning.
Working principle: municipal sewage plant to sludge in the process of processing, pass through the Treatment of Sludge of step 1)
The preparation of raw material, using the Desulphurization of no biotoxicity, convenient for improving the dewatering of sludge.Utilize Fecl3, it is convenient for it
As traditional Ferric Salt Flocculants, so that Fecl3It is positively charged to dissociate obtained cation, on the cation and mud granule
Negative electrical charge is attracted each other and is neutralized, so that the charge of sludge reduces, and reduces the repulsive force in sludge between particle, increases
Intergranular absorption, and the affinity of particle and hydrone is reduced, so that particle is increased the cohesion and coarsening, so as to improve sludge
Deposition dehydrating performance.Pass through the Desulphurization and Fecl determined in step 2)3Dosage, convenient for determining Desulphurization and Fecl3Most
Good dosage, consequently facilitating improving the quality for improving dewatering performance of sludge.By step 3), by determining Desulphurization and
Fecl3Optimal dosage, using successive addition method or mixing addition method by Desulphurization and Fecl3Investment is convenient for into sludge
The dewatering of sludge is improved.Sludge is carried out dehydrating by step 4) using press mold dehydration device, convenient for pair
Sludge carries out dehydrating operations, and the dehydration rate of sludge can be made to reach 40% or more, so that the mistake handled sludge
The dehydration rate of sludge is met the requirements in journey.Deep dehydration is carried out to sludge using Single-channel Rolling formula drying machine by step 5),
Convenient for carrying out deep dehydration operation to the sludge after progress dehydrating operations.It is analyzed by step 6) Indexs measure, convenient for progress
The indexs such as moisture content, content of beary metal and the pH value of the sludge of processing are tested and analyzed, to guarantee to handle sludge
Quality.Dry, stabilisation and recycling processing method by the sludge from wastewater treatment plant of step 1) to step 6), can
So that the moisture content of treated sludge is met the requirements, and to sludge in the process of processing, it is without secondary pollution and pacify
Quan Xinggao, Treatment of Sludge is at low cost, and product resourcebility utilizes after sludge drying.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (4)
1. a kind of sludge from wastewater treatment plant drying, stabilisation and recycling processing method, it is characterized in that: including following step
It is rapid:
1) Treatment of Sludge raw material preparation chooses Desulphurization and Fecl3Raw material as sludge conditioning in sludge handling process；
2) Desulphurization and Fecl are determined3Dosage, according to municipal sewage plant's concentration basin moisture percentage in sewage sludge, Desulphurization with
Fecl3Under conditions of mass ratio is 5:1, calculated respectively using Desulphurization when successive addition method and mixing addition method and Fecl3Throwing
Dosage；
3) sludge conditioning, according to the Desulphurization and Fecl determined in step 2)3Dosage, using successive addition method or mixing plus
Enter method for Desulphurization and Fecl3Investment improves sludge into sludge；
4) sludge dewatering is carried out dehydrating sludge using press mold dehydration device；
5) drying sludge carries out deep dehydration to sludge using Single-channel Rolling formula drying machine, obtains the mud of dehydration rate≤60%
Block；
6) Indexs measure is analyzed, according to CJT249-2007 " urban sewage treatment plant sludge disposes blended landfill shale " standard, ginseng
According to CJ/T221-2005 " the sludge from wastewater treatment plant method of inspection ", moisture content, the huge sum of money of clod in step 5) are tested and analyzed
Belong to the indexs such as content and pH value.
2. a kind of sludge from wastewater treatment plant drying, stabilisation and recycling processing method according to claim 1,
Be characterized in: the Desulphurization in step 1) is the Desulphurization that steel mill directly takes or stockyard Desulphurization after a long time placement.
3. a kind of sludge from wastewater treatment plant drying, stabilisation and recycling processing method according to claim 1,
It is characterized in: the specific steps of successive addition method described in step 3) are as follows: take 200ml sludge, desulfurization is firstly added in sludge
Ash, and 30s is quickly stirred under conditions of revolving speed is 350rmin-1,10min is stood, Fecl is then added3, and turning
Speed quickly stirs 30s under conditions of being 350rmin-1, then mixes slowly under conditions of revolving speed is 50rmin-1
15min stands 30min.
4. a kind of sludge from wastewater treatment plant drying, stabilisation and recycling processing method according to claim 1,
Be characterized in: described in step 3) mix addition method specific steps are as follows: take 200ml sludge, in sludge be added Desulphurization and
Fecl3Mixture, and revolving speed be 350rmin-1 under conditions of quickly stir 30s, then revolving speed be 50rmin-1
Under conditions of mix slowly 15min, stand 30min.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746477A (en) * | 2016-12-13 | 2017-05-31 | 北京城市排水集团有限责任公司 | A kind of urban wastewater treatment firm Treatment of Sludge and resource utilization method |
| CN107601814A (en) * | 2017-09-01 | 2018-01-19 | 唐山钢铁集团有限责任公司 | Contain blast furnace Desulphurization medicament and preparation and application for sludge dewatering |
| CN108358430A (en) * | 2018-03-13 | 2018-08-03 | 南京城建环保水务股份有限公司 | A kind of Treatment of Sludge conditioning medicament and its application method |
-
2019
- 2019-08-21 CN CN201910772916.1A patent/CN110482832A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746477A (en) * | 2016-12-13 | 2017-05-31 | 北京城市排水集团有限责任公司 | A kind of urban wastewater treatment firm Treatment of Sludge and resource utilization method |
| CN107601814A (en) * | 2017-09-01 | 2018-01-19 | 唐山钢铁集团有限责任公司 | Contain blast furnace Desulphurization medicament and preparation and application for sludge dewatering |
| CN108358430A (en) * | 2018-03-13 | 2018-08-03 | 南京城建环保水务股份有限公司 | A kind of Treatment of Sludge conditioning medicament and its application method |
Non-Patent Citations (1)
| Title |
|---|
| 陈巍等: "脱硫灰-FeCl3联合作用改善污泥的脱水性能", 《工程科学学报》 * |
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