CN109336352A - A kind of method for sludge treatment - Google Patents
A kind of method for sludge treatment Download PDFInfo
- Publication number
- CN109336352A CN109336352A CN201811309203.3A CN201811309203A CN109336352A CN 109336352 A CN109336352 A CN 109336352A CN 201811309203 A CN201811309203 A CN 201811309203A CN 109336352 A CN109336352 A CN 109336352A
- Authority
- CN
- China
- Prior art keywords
- sludge
- residue
- dehydrating agent
- filtrate
- treatment
- Prior art date
- 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.)
- Pending
Links
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
-
- 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
-
- 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
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Abstract
The invention discloses a kind of method for sludge treatment, are related to environment protection field, comprising the following steps: S1) it is used as dehydrating agent to mix with sludge for sodium chloride (NaCl), it is uniformly paved in airing field, natural drying obtains dewatered sludge；S2 dewatered sludge described in air thermal cracking) is burned or completely cut off, sludge residue is obtained；S3 the sludge residue) is collected, be dissolved in water filtering, obtains the first filtrate and the first filter residue；S4) first filtrate heating is evaporated, the as described dehydrating agent, and is recycled in step S1.The method of the present invention reduces the cost and pollution of sludge dewatering, energy saving；New dehydrating agent is introduced, by recycling the secondary pollution avoided to soil, is turned waste into wealth.
Description
Technical field
The present invention relates to environment protection field more particularly to a kind of method for sludge treatment.
Background technique
Sludge can be generated after trade effluent and city domestic sewage processing, sludge quantity usually accounts for the 0.3% of sewage quantity volume
~0.5%, quality is about the 1%~2% of sewage load.Composition, property and the quantity of sludge depend primarily on coming for waste water
Source and waste water treatment process.Currently, for sludge processing there are mainly two types of method, composting method and landfill method.
Sludge is different from other solid waste, is made of water, organic matter and inanimate matter, complicated component, wherein organic matter
Including the bacterium colony and the flocculant that is added of when sewage purification in sludge, the iron ion being added when inanimate matter includes sewage purification and
Aluminium ion.Water package is to cause being tightly combined for sludge and hydrone by the organic matters such as the bacterium colony in sludge, causes dehydration difficult
The main reason for, moisture content may be up to 70% or more, and according to analysis, the hydrone in sludge has different phases: 1, certainly
By state water: can be precipitated through gravity and mechanism removes.2, physical combination water: must more energy removal (as heated) this water
It include: capillary, Interstitial Water colloidal state, surface adsorption water.3, chemically combine water: only breaking chemical bond could remove, and be claimed
For " equilibrium water ", this water includes: intracellular water, molecular water.This partial moisture is difficult to burn, and transportation cost is high, and stacking accounts for
Ground area is big, and directly landfill can then be such that landfill yard scraps in advance.Microorganism, pathogen content are high, untreated, directly apply or
Throw aside, may contaminated food chain, odor pollution environment, while to atmosphere emission greenhouse gas (being 20 times of carbon dioxide).
Also contain superfines in sludge, there are biggish danger in heat drying and treatment process.Additionally contain heavy metal, if
Uncontrolled application, possible contaminated land cause irreversible cultivated land degradation.The harm of sludge is also rarely known by the people at present, usually
Illegally taken, cause that the Accumulation of heavy metals in soil is exceeded, the hardening soil, human residential environment and food are polluted unintentionally and
It destroys.
For composting method, since compost needs 10 days~15 days fermentation process, this just brings limitation to sludge treatment
Property, the speed of Treatment of Sludge is affected, so, the processing capacity of sludge treatment field will receive very big limitation, to increase day
Treating capacity just needs to expand sludge treatment field scale, higher cost, industrialization difficulty from certain level；And this method
The part harmful substance in sludge is removed by fermentation process, converts the inorganic matter that plant is easy to absorb for contained organic matter
And small organic molecule, but the heavy metal in sludge can not be removed, therefore, for handling the sludge of industrial wastewater discharge not
It is preferably used as Nutrition Soil, is such as directly used in the fertilising of crops, is likely to result in the enrichment of heavy metal.
And landfill method has actually only delayed pollution, can not fundamentally solve pollution problem of the sludge to environment；
For refuse landfill away from sewage treatment plant farther out the case where, need a big chunk freight；Due to from sewage treatment plant
The sludge moisture content transported is higher, and compacting is relatively difficult, therefore general landfill is filled using sludge and clay layering transpostion interval；
Some hygienic issues such as disease may also can be caused by filling untreated sludge.For burning, there is a pole in pollution control
Its crucial principle will avoid secondary pollution, and the exhaust gas generated when sludge incineration can cause secondary pollution to environment, and
And also have the shortcomings that energy consumption is high, at high cost, Treatment of Sludge level of residue is big.Secondly, wet sludge calorific value is low not to allow easy firing yet,
Sludge is burned after mixing with some auxiliary fuels, needs a large amount of auxiliary fuel, uneconomical reasonable.Also someone is in sludge
Calcium oxide, magnesia, magnesium chloride, aluminum sulfate, ferric sulfate etc. is added and is used as dehydrating agent, but their dehydration rates are low, such as addition oxygen
70% can only be reduced to from 80% moisture percentage in sewage sludge by changing calcium, and the also non-industrialization of other dehydrating agents, at high cost, it is not easy to obtain
?.Most importantly these methods do not account for the problem of dehydrating agent recycling, these inorganic salts are nuzzled together with sludge residue
In soil, the salinization of soil can be inevitably resulted in.
Therefore, those skilled in the art is dedicated to developing a kind of method for sludge treatment, reduce sludge dewatering cost and
Pollution, it is energy saving；New dehydrating agent is introduced, by recycling the secondary pollution avoided to soil, is turned waste into wealth.
Summary of the invention
In view of the above drawbacks of the prior art, the technical problem to be solved by the present invention is to reduce the cost of sludge dewatering
And pollution, and realize recycling.
To achieve the above object, the present invention provides a kind of method for sludge treatment, comprising the following steps:
S1) sodium chloride (NaCl) is mixed as dehydrating agent with sludge, is uniformly paved in airing field, natural drying obtains
Dewatered sludge；
S2 the dewatered sludge) is burned, sludge residue is obtained；
S3 the sludge residue) is collected, be dissolved in water filtering, obtains the first filtrate and the first filter residue；
S4) first filtrate heating is evaporated, the as described dehydrating agent, and is recycled in step S1.
The present invention also provides a kind of method for sludge treatment, comprising the following steps:
S1) sodium chloride (NaCl) is mixed as dehydrating agent with sludge, is uniformly paved in airing field, natural drying obtains
Dewatered sludge；
S2) completely cut off dewatered sludge described in air thermal cracking, obtain sludge residue；
S3 the sludge residue) is collected, be dissolved in water filtering, obtains the first filtrate and the first filter residue；
S4) first filtrate heating is evaporated, the as described dehydrating agent, and is recycled in step S1.
Further, industrial waste acid dissolution filter will be added in first filter residue, obtains the second filtrate and the second filter residue,
It will be filled after second filter residue washing.
Further, second filtrate heating is evaporated, the crystal recycled is used for sewage purification as flocculant.
Further, the industrial waste acid is hydrochloric acid.
Further, the crystal is molysite.
Further, which is characterized in that the dewatered sludge 600 DEG C~1000 DEG C at a temperature of burn or isolation air
Thermal cracking.
Further, which is characterized in that the dehydrating agent is mixed with the sludge with mass ratio 1:5~7.
Further, the sludge is industrial sludge or municipal sludge.
A kind of method for sludge treatment of the present invention, has following technical effect that
1) dehydration dries mode using nature, energy saving, and processing sludge is at low cost, pollution is small.
2) it uses sodium chloride (NaCl) as dehydrating agent, can be recycled after having handled sludge, reduce processing cost, kept away
Exempt from secondary pollution of the abraum salt to soil.Treated, and sludge residue can become resource reutilization.And sodium chloride is industry, the people
Between using at most, price is minimum, and the salt being most readily available, and further reduces costs.
3) the new way to turn waste into wealth, and a kind of novel waste salt treatment are provided for the processing of sodium chloride (NaCl)
Method.
Specific embodiment
Embodiment 1
It takes sodium chloride (NaCl) several, is sufficiently mixed by salt/sludge quality ratio 1:5 with sludge, is uniformly paved in airing field,
It is dried in a few days, the moisture in sludge is sufficiently dried.
Sludge residue after drying burns at 700 DEG C, removes organic matter bacterium colony and flocculating polymer in sludge
Agent.Simultaneously because aluminum chloride sublimation o'clock, at 178 DEG C or so, the aluminium chloride in sludge can be removed with heating sublimation, and sodium chloride
(NaCl) distillation will not be melted in ignition temperature (less than 1000 DEG C), chlorination iron rule can be converted into iron oxide.
Sodium chloride (NaCl) is recycled finally by the method for the filtering that is dissolved in water.Remaining sludge residue (its not soluble in water
Predominantly iron oxide and sandy soil) it can be by reacting and filtering with industrial waste acid (predominantly hydrochloric acid), filtrate obtains after being evaporated
Molysite can replace sewage plant polyaluminium salts use.Filter residue fills after washing.
Embodiment 2
It takes industrial waste salt several, is sufficiently mixed by salt/sludge quality ratio 1:6 with sludge, is uniformly paved in airing field, pass through
It dries within several days, the moisture in sludge is sufficiently dried.
Sludge residue after drying is passed through completely cuts off air heating cracking at 800 DEG C, removes the organic matter bacterium colony in sludge, with
And high polymer coagulant.Simultaneously because aluminum chloride sublimation o'clock, at 178 DEG C or so, the aluminium chloride in sludge can be removed with heating sublimation
It goes, and sodium chloride (NaCl) will not melt distillation in heating temperature (less than 1000 DEG C), due to residual air in thermal cracking container,
Molysite then can partly or entirely be converted into iron oxide.
Sodium chloride (NaCl) is recycled finally by the method for the filtering that is dissolved in water.In the dehydrating agent sodium chloride (NaCl) of recycling
A small amount of iron chloride can be contained, but do not influence the effect of dehydrating agent sodium chloride (NaCl) completely).Remaining sludge residue not soluble in water
(it is mainly iron oxide and sandy soil) can be by reacting and filtering with industrial waste acid (predominantly nitric acid), and filtrate obtains after being evaporated
The molysite arrived can replace the polyaluminium salts of sewage plant to use.Filter residue fills after washing.
Embodiment 3
It takes the untreated crude salt of evaporation of seawater several, is sufficiently mixed by salt/sludge quality ratio 1:7 with sludge, in airing field
It uniformly paves, is dried in a few days, the moisture in sludge is sufficiently dried.
Sludge residue after drying is passed through completely cuts off air heating cracking at 900 DEG C, removes having in sludge) machine matter bacterium colony,
And high polymer coagulant.Simultaneously because aluminum chloride sublimation o'clock, at 178 DEG C or so, the aluminium chloride in sludge can be with heating sublimation
It removes, and sodium chloride (NaCl) will not melt distillation in heating temperature (less than 1000 DEG C), due to remaining empty in thermal cracking container
Gas, molysite then can partly or entirely be converted into iron oxide.
Sodium chloride (NaCl) is recycled finally by the method for the filtering that is dissolved in water.In the dehydrating agent sodium chloride (NaCl) of recycling
A small amount of iron chloride can be contained, but do not influence dehydrating agent sodium chloride (effect of NaCl) completely.Remaining sludge residue not soluble in water
(it is mainly iron oxide and sandy soil) can be by reacting and filtering with industrial waste acid (predominantly sulfuric acid), and filtrate obtains after being evaporated
The molysite arrived can replace the polyaluminium salts of sewage plant to use.Filter residue fills after washing.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be within the scope of protection determined by the claims.
Claims (9)
1. a kind of method for sludge treatment, which comprises the following steps:
S1) sodium chloride (NaCl) is mixed as dehydrating agent with sludge, is uniformly paved in airing field, natural drying is dehydrated
Sludge；
S2 the dewatered sludge) is burned, sludge residue is obtained；
S3 the sludge residue) is collected, be dissolved in water filtering, obtains the first filtrate and the first filter residue；
S4) first filtrate heating is evaporated, the as described dehydrating agent, and is recycled in step S1.
2. a kind of method for sludge treatment, which comprises the following steps:
S1) sodium chloride (NaCl) is mixed as dehydrating agent with sludge, is uniformly paved in airing field, natural drying is dehydrated
Sludge；
S2) completely cut off dewatered sludge described in air thermal cracking, obtain sludge residue；
S3 the sludge residue) is collected, be dissolved in water filtering, obtains the first filtrate and the first filter residue；
S4) first filtrate heating is evaporated, the as described dehydrating agent, and is recycled in step S1.
3. a kind of method for sludge treatment as described in claim 1 or claim 2, which is characterized in that by first filter residue
Middle addition industrial waste acid dissolution filter, obtains the second filtrate and the second filter residue, will fill after second filter residue washing.
4. a kind of method for sludge treatment as claimed in claim 3, which is characterized in that be evaporated second filtrate heating, return
Obtained crystal is received as flocculant for sewage purification.
5. a kind of method for sludge treatment as claimed in claim 3, which is characterized in that the industrial waste acid is hydrochloric acid.
6. a kind of method for sludge treatment as claimed in claim 4, which is characterized in that the crystal is molysite.
7. a kind of method for sludge treatment as described in claim 1 or claim 2, which is characterized in that the dewatered sludge exists
Air thermal cracking is burned or completely cut off at a temperature of 600 DEG C~1000 DEG C.
8. a kind of method for sludge treatment as described in claim 1 or claim 2, which is characterized in that the dehydrating agent and institute
Sludge is stated with the mixing of mass ratio 1:5~7.
9. a kind of method for sludge treatment as described in claim 1 or claim 2, which is characterized in that the sludge is industry
Sludge or municipal sludge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811309203.3A CN109336352A (en) | 2018-11-05 | 2018-11-05 | A kind of method for sludge treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811309203.3A CN109336352A (en) | 2018-11-05 | 2018-11-05 | A kind of method for sludge treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109336352A true CN109336352A (en) | 2019-02-15 |
Family
ID=65314044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811309203.3A Pending CN109336352A (en) | 2018-11-05 | 2018-11-05 | A kind of method for sludge treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109336352A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5898200A (en) * | 1981-12-03 | 1983-06-10 | Mitsubishi Heavy Ind Ltd | Dehydration of sludge |
| JPS61174112A (en) * | 1985-01-29 | 1986-08-05 | Ebara Corp | Treatment of incineration ash of municipal refuse |
| JPH01284399A (en) * | 1988-05-11 | 1989-11-15 | Ngk Insulators Ltd | Incineration treatment of sludge and extrusion kneading machine used therein |
| CN1614307A (en) * | 2004-12-08 | 2005-05-11 | 杭州华章电气工程有限公司 | Method for removing ink from waste paper by firing |
| CN1978348A (en) * | 2005-12-05 | 2007-06-13 | 陈梅铭 | City sludge comprehensive utilization |
| KR100799261B1 (en) * | 2007-02-01 | 2008-01-29 | (주) 빛과환경 | Method for dewatering sludge to enhance its recycling usability with titanium salts as dewatering coagulant aid |
| CN101823826A (en) * | 2010-04-20 | 2010-09-08 | 上海大学 | Method for adjusting and treating municipal residual sludge by using salinferous brine or seawater |
| CN102140003A (en) * | 2010-02-03 | 2011-08-03 | 北京中矿环保科技股份有限公司 | Sludge drying method, incineration method, sludge incineration device, thermal power plant and system |
| CN102583951A (en) * | 2012-02-21 | 2012-07-18 | 南京大学 | Acid lixiviation based recycling treatment method of aluminum circulating coagulation sludge |
| WO2012095226A1 (en) * | 2011-01-11 | 2012-07-19 | Siemens Aktiengesellschaft | Method and apparatus for dehydration treatment, and treatment before dehydration of a sludge substance |
| CN102849918A (en) * | 2012-10-09 | 2013-01-02 | 浙江大学 | Treatment method for strengthening dewatering performance of excess activated sludge |
| CN108017258A (en) * | 2017-12-13 | 2018-05-11 | 江苏和合环保集团有限公司 | A kind of industrial residue sludge drying agent and its application method |
| US20180208481A1 (en) * | 2017-01-25 | 2018-07-26 | Institut national de Recherche en Sciences et Technologies pour I'Environnement et I'Agriculture | Method of recovering iron and/or phosphorus from sludge of waste water treatment plants |
| CN108423960A (en) * | 2018-03-06 | 2018-08-21 | 华东理工大学 | Sludge Hydrocracking utilizes method and device |
-
2018
- 2018-11-05 CN CN201811309203.3A patent/CN109336352A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5898200A (en) * | 1981-12-03 | 1983-06-10 | Mitsubishi Heavy Ind Ltd | Dehydration of sludge |
| JPS61174112A (en) * | 1985-01-29 | 1986-08-05 | Ebara Corp | Treatment of incineration ash of municipal refuse |
| JPH01284399A (en) * | 1988-05-11 | 1989-11-15 | Ngk Insulators Ltd | Incineration treatment of sludge and extrusion kneading machine used therein |
| CN1614307A (en) * | 2004-12-08 | 2005-05-11 | 杭州华章电气工程有限公司 | Method for removing ink from waste paper by firing |
| CN1978348A (en) * | 2005-12-05 | 2007-06-13 | 陈梅铭 | City sludge comprehensive utilization |
| KR100799261B1 (en) * | 2007-02-01 | 2008-01-29 | (주) 빛과환경 | Method for dewatering sludge to enhance its recycling usability with titanium salts as dewatering coagulant aid |
| CN102140003A (en) * | 2010-02-03 | 2011-08-03 | 北京中矿环保科技股份有限公司 | Sludge drying method, incineration method, sludge incineration device, thermal power plant and system |
| CN101823826A (en) * | 2010-04-20 | 2010-09-08 | 上海大学 | Method for adjusting and treating municipal residual sludge by using salinferous brine or seawater |
| WO2012095226A1 (en) * | 2011-01-11 | 2012-07-19 | Siemens Aktiengesellschaft | Method and apparatus for dehydration treatment, and treatment before dehydration of a sludge substance |
| CN102583951A (en) * | 2012-02-21 | 2012-07-18 | 南京大学 | Acid lixiviation based recycling treatment method of aluminum circulating coagulation sludge |
| CN102849918A (en) * | 2012-10-09 | 2013-01-02 | 浙江大学 | Treatment method for strengthening dewatering performance of excess activated sludge |
| US20180208481A1 (en) * | 2017-01-25 | 2018-07-26 | Institut national de Recherche en Sciences et Technologies pour I'Environnement et I'Agriculture | Method of recovering iron and/or phosphorus from sludge of waste water treatment plants |
| CN108017258A (en) * | 2017-12-13 | 2018-05-11 | 江苏和合环保集团有限公司 | A kind of industrial residue sludge drying agent and its application method |
| CN108423960A (en) * | 2018-03-06 | 2018-08-21 | 华东理工大学 | Sludge Hydrocracking utilizes method and device |
Non-Patent Citations (5)
| Title |
|---|
| MICKAEL RAYNAUD等: ""Compression dewatering of municipal activated sludge: Effects of salt and pH"", 《WATER RESEARCH》 * |
| 廖健: "《铝合金挤压材生产与应用》", 31 March 2018, 冶金工业出版社 * |
| 王宁: ""水处理污泥中铝盐、铁盐回收利用的研究"", 《中国硕士论文全文数据库工程科技I辑》 * |
| 肖羽棠: "《城市污水处理技术》", 31 July 2015, 中国建材工业出版社 * |
| 辽宁省石油化工技术情报总站主编: "《化工三废治理技术》", 31 December 1983 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ahmad et al. | Sustainable management of water treatment sludge through 3 ‘R’concept | |
| Wang et al. | Possible solutions for sludge dewatering in China | |
| CN101823825B (en) | Sludge dehydrating and drying process method and device | |
| CN102183027B (en) | Treatment method of high calorific value excess sludge | |
| CN101823768B (en) | Method for preparing flocculant, fertilizer and methane with algae-containing sludge | |
| WO2008128465A1 (en) | System and progress for treating wet sludge by drying and incinerating | |
| CN105417777A (en) | Sewage coagulation and adsorption sedimentation separation-separator anaerobic bio-gas regeneration treatment method | |
| CN101265009B (en) | Clean energy-saving sludge drying method for reclaiming and utilizing tail gas residual heat | |
| CN101274813B (en) | Tail gas waste heat recovery and reutilization sludge drying system | |
| CN104671621B (en) | A kind of processing method of urban wastewater treatment firm mud | |
| CN101792247A (en) | Sludge treatment method capable of combining powerful dehydration with low-temperature mummification | |
| CN105347653A (en) | Sludge dehydration conditioning agent and its preparation method and use method | |
| CN105236707B (en) | A kind of fixing agent of sewage treatment plant's waste sludge and its preparation and application | |
| Łukasiewicz | Post-coagulation sludge management for water and wastewater treatment with focus on limiting its impact on the environment | |
| Cusidó et al. | Atomized sludges via spray-drying at low temperatures: An alternative to conventional wastewater treatment plants | |
| CN101838097A (en) | Sludge drying agent and preparation method and using method thereof | |
| CN109336352A (en) | A kind of method for sludge treatment | |
| CN103274421A (en) | Method for recycling silica and polyaluminum ferric chloride in coal ash by using iron and steel pickling waste water | |
| Van Berg | Effects of sewage sludge disposal | |
| CN104129897A (en) | Dehydration technology of domestic sludge | |
| CN108249735A (en) | A kind of municipal sludge processing method | |
| KR100687627B1 (en) | Method for solidifying sewage sludge | |
| RU2708595C1 (en) | Method of complex treatment of sewage sludge | |
| CN105254165A (en) | System and method for treating urban domestic sludge into building materials | |
| Politaeva et al. | A new approach for recycling of spent activated sludge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |