CN104973749B - Sludge solidification method - Google Patents
Sludge solidification method Download PDFInfo
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- CN104973749B CN104973749B CN201510403865.7A CN201510403865A CN104973749B CN 104973749 B CN104973749 B CN 104973749B CN 201510403865 A CN201510403865 A CN 201510403865A CN 104973749 B CN104973749 B CN 104973749B
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- sludge
- inorganic mineral
- firming agent
- curing method
- magnesium
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Abstract
The present invention discloses a sludge solidification method, which comprises: pouring raw sludge into a mixing stirrer, pouring a curing agent having the amount of 3-6% of the weight of the raw sludge, starting the stirrer, carrying out room temperature stirring for 5-10 min so as to uniformly stir the sludge, loading the uniformly-stirred sludge into a dryer, and drying for at least half an hour or carrying out air-placing for at least three days to obtain the sludge with the water content of not more than 25%. With the sludge solidification method of the present invention, the water content of the treated sludge is low.
Description
Technical field
The present invention relates to technical field of sludge treatment, more particularly, to a kind of sludge curing method.
Background technology
A large amount of sludge can be produced in sewage disposal process.Aforementioned sludge is a kind of very high hypermedia thing of water content
Matter, wherein in addition to containing substantial amounts of moisture, also containing the material such as pathogen, microorganism, Organic substance and heavy metal, salt.
Moisture percentage in sewage sludge after filter pressing is processed is 70% to 80%.Higher moisture content can bring very big to later stage Treatment of Sludge
Trouble, it is mishandling to cause serious secondary pollution.Meanwhile, the purposes of current sludge is mainly filled, is burned, making agricultural
Fertilizer.And, the phenomenon that substantial amounts of sludge is arbitrarily piled up is deposited at present.Therefore, the problem of the secure and cheap disposal of sludge is also increasingly
It is prominent.Harmful garbage is changed into into harmless material, that is, is turned waste into wealth and is only the only way of Treatment of Sludge.
The content of the invention
It is an object of the invention to provide a kind of sludge curing method, it has the relatively low spy of the moisture percentage in sewage sludge after processing
Point.
The technical solution adopted in the present invention is：Sludge curing method, comprises the following steps：
1）Primary sludge is added to into mixing and blending machine, the firming agent of primary sludge weight 3 ~ 6% is added；
2）Blender is started, stirring at normal temperature makes sludge agitation uniform for 5 ~ 10 minutes, afterwards, the sludge for stirring is loaded
Drying machine drying at least half an hour hangs at least 3 days, obtains the sludge that moisture content is not more than 25%.
With weight ratio meter, the firming agent is included：The inorganic mineral 12% ~ 15% of the inorganic mineral 50% ~ 60%, calcium of magnesium,
Clay mineral 5% ~ 10%, activated alumina 5% ~ 10%.
The inorganic mineral of the magnesium is magnesium oxide.
The inorganic mineral of the calcium is Calcium Carbonate.
The particle diameter of the firming agent is less than 120um.
The blender is turbine centrifugal blender.
The drying machine is blast drier.
Advantage for present invention is：Moisture percentage in sewage sludge after process is relatively low.The sludge curing method of the present invention passes through
Firming agent is mixed with primary sludge, is made the crystal that solidification is produced play a part of skeleton in being embedded into primary sludge, is made primary
Sludge is more stable, and the heavy metal in primary sludge generates more stable precipitation, and those precipitations are adsorbed by ion surface
Stick to the surface of nucleus.Jing test, it is processed by the invention after moisture percentage in sewage sludge be not more than 25%.
Specific embodiment
Embodiment, sludge curing method, comprises the following steps：
1）Moisture content is added to into mixing and blending machine more than 80% primary sludge, adds firming agent, the firming agent is added
Measure 3 ~ 6% for primary sludge weight.Such as, the dosage of firming agent is 3%, 5% or the 6% of primary sludge weight.
2）Blender is started, stirring at normal temperature makes sludge agitation uniform in 5 ~ 10 minutes.Such as, stir 5 minutes, 8 minutes, 10 points
Clock.Afterwards, the sludge for stirring is loaded drying machine to dry at least 30 minutes.Such as：Drying 30 minutes, 60 minutes or
120 minutes.Can also hang 3 days.Such as：Hang 3 days, 6 days, 12 days.Obtain the sludge that moisture content is not more than 25%.
Wherein, with weight ratio meter, the firming agent include the inorganic mineral 12% of the inorganic mineral 50% ~ 60%, calcium of magnesium ~
15%th, clay mineral 5% ~ 10%, activated alumina 5% ~ 10%.Such as：The nothing of the inorganic mineral 50%, calcium of magnesium is included in firming agent
Machine mineral 12%, clay mineral 5%, activated alumina 5%；Or, include in firming agent magnesium inorganic mineral 55%, calcium it is inorganic
Mineral 13%, clay mineral 8%, activated alumina 8%；Or, firming agent includes the inorganic mineral of the inorganic mineral 60%, calcium of magnesium
15%th, clay mineral 10%, activated alumina 10%.Preferably, the inorganic mineral of the magnesium is magnesium oxide, and the inorganic mineral of the calcium is
Calcium Carbonate.
In order to reach more preferable solidification effect, the particle diameter of the firming agent for being adopted is less than 120um.Such as particle diameter is：
100um、80um、110um。
Aforementioned blender adopts blast drier preferably with turbine centrifugal blender, drying machine.
Jing actual tests several times, it is premenstrual state method process sludge moisture content be：20%th, the numerical value such as 22%, 15%, 18%,
Not less than 25%.
The principle of the present invention：The firming agent of addition is mixed with primary sludge, and a series of thing can occur in this process
Physicochemical reacts, and interionic generates the carbonate of magnesium and stirs together, solidifies during the crystal for producing is embedded into primary sludge and rises
To the effect of skeleton, make primary sludge more stable, the small nucleus of magnesium carbonate that silica sand ion surface is generated grows into needle-like,
Discharge hydroxide radical ion simultaneously, more stable precipitation can be generated with the heavy metal in primary sludge, by ion table
Face absorption sticks to the surface of nucleus.And, Calcium Carbonate can destroy the structure of cell in primary sludge, discharge cellular water
Come, it is rapid to volatilize, reach the purpose of dehydration.Sludge after solidification has stable structure, has general mud soil characteristics, with not
Reversibility.And, the method adopts room temperature or cold drying, can be effectively prevented the poisonous and harmfuls such as generation stench, bioxin
Gas.
The preferred embodiments of the present invention are the foregoing is only, the scope of the claims of the present invention, every utilization is not thereby limited
Equivalent structure or equivalent flow conversion that present specification is made, or directly or indirectly it is used in other related technologies
Field, is included within the scope of the present invention.
Claims (4)
1. sludge curing method, comprises the following steps：
1）Primary sludge is added to into mixing and blending machine, the firming agent of primary sludge weight 3 ~ 6% is added；
2）Blender is started, stirring at normal temperature makes sludge agitation uniform for 5 ~ 10 minutes, afterwards, the sludge for stirring is loaded drying
Machine drying at least half an hour hangs at least 3 days, obtains the sludge that moisture content is not more than 25%；
With weight ratio meter, the firming agent is included：The inorganic mineral 12% ~ 15%, clay of the inorganic mineral 50% ~ 60%, calcium of magnesium
Mineral 5% ~ 10%, activated alumina 5% ~ 10%；
The particle diameter of the firming agent is 100um, 80um or 110um；
The blender is turbine centrifugal blender.
2. sludge curing method according to claim 1, it is characterised in that：The inorganic mineral of the magnesium is magnesium oxide.
3. sludge curing method according to claim 1, it is characterised in that：The inorganic mineral of the calcium is Calcium Carbonate.
4. sludge curing method according to claim 1, it is characterised in that：The drying machine is blast drier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510403865.7A CN104973749B (en) | 2015-07-10 | 2015-07-10 | Sludge solidification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510403865.7A CN104973749B (en) | 2015-07-10 | 2015-07-10 | Sludge solidification method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104973749A CN104973749A (en) | 2015-10-14 |
| CN104973749B true CN104973749B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510403865.7A Expired - Fee Related CN104973749B (en) | 2015-07-10 | 2015-07-10 | Sludge solidification method |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217926A (en) * | 2015-10-20 | 2016-01-06 | 盐城琛丹低碳技术研究院有限公司 | Sludge reduction method |
| CN105254166B (en) * | 2015-11-14 | 2017-10-20 | 辽宁工程技术大学 | A kind of dewatered sludge curing agent, preparation method and application method |
| CN105481224A (en) * | 2016-01-21 | 2016-04-13 | 盐城琛丹低碳技术研究院有限公司 | Air source sludge drying method |
| CN106045562A (en) * | 2016-06-03 | 2016-10-26 | 盐城琛丹低碳技术研究院有限公司 | Preparing method of ultra-light material |
| CN106007324A (en) * | 2016-07-06 | 2016-10-12 | 无锡市华东电力设备有限公司 | Solidification and desiccation process of sludge |
| CN106316072B (en) * | 2016-10-14 | 2019-01-25 | 盐城琛丹低碳技术研究院有限公司 | The preparation method of High Efficiency Agent of Sludge Dehydration |
| CN107235669B (en) * | 2017-06-15 | 2020-01-03 | 盐城琛丹低碳技术研究院有限公司 | Preparation method of riprap material |
| CN107976379B (en) * | 2017-11-22 | 2020-04-21 | 河海大学 | Method for measuring mixing amount of freshly-mixed solidified sludge solidifying material |
| CN110339527A (en) * | 2019-07-23 | 2019-10-18 | 哈德逊（苏州）水技术有限公司 | A kind of incineration of refuse flyash curing agent |
Citations (5)
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|---|---|---|---|---|
| CN1884155A (en) * | 2006-07-03 | 2006-12-27 | 张明罡 | Curing agent for waste drilling mud and use method therefor |
| CN101456662A (en) * | 2008-12-24 | 2009-06-17 | 深圳市津港环保技术有限公司 | Urban sludge chemical curing method |
| CN101792248A (en) * | 2009-05-12 | 2010-08-04 | 上海久桓环境资源开发有限公司 | Sludge diffusing, dehydrating and curing process |
| CN103253842A (en) * | 2013-03-28 | 2013-08-21 | 上海同臣环保有限公司 | Sludge deep dewatering treatment system and process |
| CN104556596A (en) * | 2013-10-25 | 2015-04-29 | 中国石油化工股份有限公司 | Sludge treatment method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103613268B (en) * | 2013-12-03 | 2016-03-30 | 湖南科技大学 | A kind of sludge dehydration conditioner and deep dehydration method thereof |
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2015
- 2015-07-10 CN CN201510403865.7A patent/CN104973749B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884155A (en) * | 2006-07-03 | 2006-12-27 | 张明罡 | Curing agent for waste drilling mud and use method therefor |
| CN101456662A (en) * | 2008-12-24 | 2009-06-17 | 深圳市津港环保技术有限公司 | Urban sludge chemical curing method |
| CN101792248A (en) * | 2009-05-12 | 2010-08-04 | 上海久桓环境资源开发有限公司 | Sludge diffusing, dehydrating and curing process |
| CN103253842A (en) * | 2013-03-28 | 2013-08-21 | 上海同臣环保有限公司 | Sludge deep dewatering treatment system and process |
| CN104556596A (en) * | 2013-10-25 | 2015-04-29 | 中国石油化工股份有限公司 | Sludge treatment method |
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| CN104973749A (en) | 2015-10-14 |
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