CN104973749B - Sludge solidification method - Google Patents

Sludge solidification method Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
sludge
inorganic mineral
firming agent
magnesium
calcium
Prior art date
Application number
CN201510403865.7A
Other languages
Chinese (zh)
Other versions
CN104973749A (en
Inventor
吉国青
Original Assignee
盐城琛丹低碳技术研究院有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 盐城琛丹低碳技术研究院有限公司 filed Critical 盐城琛丹低碳技术研究院有限公司
Priority to CN201510403865.7A priority Critical patent/CN104973749B/en
Publication of CN104973749A publication Critical patent/CN104973749A/en
Application granted granted Critical
Publication of CN104973749B publication Critical patent/CN104973749B/en

Links

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

Sludge curing method
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.
CN201510403865.7A 2015-07-10 2015-07-10 Sludge solidification method CN104973749B (en)

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

Family

ID=54270779

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510403865.7A CN104973749B (en) 2015-07-10 2015-07-10 Sludge solidification method

Country Status (1)

Country Link
CN (1) CN104973749B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CN104973749A (en) 2015-10-14

Similar Documents

Publication Publication Date Title
Nimwinya et al. A sustainable calcined water treatment sludge and rice husk ash geopolymer
Gupta et al. Application of biochar from food and wood waste as green admixture for cement mortar
Bie et al. Characteristics of municipal solid waste incineration fly ash with cement solidification treatment
Sharma et al. Fly ash for the removal of Mn (II) from aqueous solutions and wastewaters
CN103406089B (en) Method for preparation of rime-like titanate by taking organic matters in methacrylic acid wastewater as template agent
Yue et al. Research on the characteristics of red mud granular adsorbents (RMGA) for phosphate removal
Jianli et al. Effect of magnesium oxychloride cement on stabilization/solidification of sewage sludge
Redden et al. Microstructure, strength, and moisture stability of alkali activated glass powder-based binders
Idris et al. Adsorption equilibrium of malachite green dye onto rubber seed coat based activated carbon
CN105419807B (en) The curing agent and methods for making and using same of heavy metal and organic compound contaminated soil
CN104909816B (en) A kind of sintering grow type super light ceramisite produced with mud and its manufacture method
Gong et al. Preparation of a new sorbent with hydrated lime and blast furnace slag for phosphorus removal from aqueous solution
CN100528768C (en) Industrial residue based compound dephosphorization material
CN103894407B (en) A kind of method of restoration of soil polluted by heavy metal
CN101531492B (en) Method for preparing light concrete by municipal solid waste incineration fly ash
CN103130465B (en) LC10 haydite concrete prepared from reclaimed sand and preparation method thereof
CN106904924B (en) Utilize the system and method for municipal waste and Industrial Solid Waste building 3D printing material
CN101265070A (en) Sludge solidifying agent and application thereof
Pan et al. Effect of CO2 curing on demolition recycled fine aggregates enhanced by calcium hydroxide pre-soaking
CN101838034B (en) High efficiency hardening resistant micro-electrolysis material and preparation method thereof
Albayrak et al. Investigation of the effects of fatty acids on the compressive strength of the concrete and the grindability of the cement
CN101810165A (en) Smokeless mosquito incense blank and preparation method thereof
CN101439955A (en) Preparation of 06 grade gypsum based autoclave-free aerated concrete building blocks
KR100812828B1 (en) Solidifying agent for sewage or wastewater sludge and covering material for waste reclamation land prepared using this
CN105316001A (en) Red mud particle soil repairing adhesives and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
GR01 Patent grant