CN109320050A - A kind of conditioner and preparation method and application suitable for municipal sludge recycling - Google Patents
A kind of conditioner and preparation method and application suitable for municipal sludge recycling Download PDFInfo
- Publication number
- CN109320050A CN109320050A CN201811507930.0A CN201811507930A CN109320050A CN 109320050 A CN109320050 A CN 109320050A CN 201811507930 A CN201811507930 A CN 201811507930A CN 109320050 A CN109320050 A CN 109320050A
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- China
- Prior art keywords
- sludge
- mesh
- conditioner
- powder
- dolime
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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
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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
Abstract
The invention discloses a kind of conditioners and preparation method and application suitable for municipal sludge recycling, it is made of dolime, it can also be bentonite including other inorganic powders, other inorganic powders, the mixture of any one or a few in diatomite, flyash, Paris white, kaolin powder, dolomite dust, electric appliance mountain flour, talcum powder, medical stone powder, conch meal, vermiculite power, pulverized limestone, cement, gypsum.Raw material sources of the present invention are extensive, low in raw material price and preparation process is simple.Sludge conditioner prepared by the present invention, high treating effect, sludge product that treated can realize resource utilization.
Description
Technical field
The present invention relates to municipal sludge processing technology fields, more particularly to a kind of tune suitable for municipal sludge recycling
Manage agent.
Background technique
Municipal sludge is generation (partly) solid-state castoff after municipal wastewater processing.As domestic municipal wastewater is (following
Referred to as " sewage ") processing cause development, sewage plant total process water yield and degree for the treatment of constantly will expand and improve, the city of generation
Political affairs sludge (hereinafter referred to as " sludge ") amount also increasingly increases.It removes in sludge and is sought containing a large amount of organic matter and nitrogen abundant, phosphorus etc.
It supports outside substance, also containing harmful organic substances such as a large amount of pathogenic microorganisms, heavy metals.Secondary pollution and guarantor caused by prevent it
Demonstrate,prove the normal operation and treatment effect of sewage treatment plant, the position that the processing handling problems of sludge are occupied in municipal sewage treatment
It has become increasingly conspicuous.
The treatment approach of sludge mainly includes the sides such as sanitary landfills after land use, desiccation, burning disposal and water body consumption
Method, although these methods can accommodate a large amount of sludge, there are still technology not yet full maturitys, occupy large amount of land resources,
The problems such as comprehensive utilization of mud efficiency is relatively low.
China is a large agricultural country, and the land use of sludge should be the main direction of development of sludge treatment.With state
Requirement of the family to environmental improvement standard is increasingly stringenter, and scale sewage treatment plant necessarily gradually increases.China has been put into effect at present
The sludge that sewage treatment plant generates can be used for landfill and urban afforestation by multinomial policy and standard after being effectively treated, or
Sludge is made into matrix production compound fertilizer and is used for agricultural etc..But as in sludge management aspect to pathogen, a huge sum of money contained by sludge
Belong to and the attention degree of the organoleptic indicators such as the physical and chemical indexes and foul smell control such as harmful organic substance is high not enough and treatment process in
The problems such as odor pollution of generation and excessive treated output object alkalinity, greatly limit the resource utilization to sludge.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of conditioner suitable for municipal sludge recycling and preparation sides
Method and application.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of conditioner suitable for municipal sludge recycling, is made of dolime.Dolomite main component is
CaMg(CO3)2, belong to the carbonate mineral of trigonal system.
Conditioner of the present invention, wherein further include other inorganic powders, other inorganic powders are bentonite, diatom
Soil, flyash, Paris white, kaolin powder, dolomite dust, electric appliance mountain flour, talcum powder, medical stone powder, conch meal, vermiculite power,
Pulverized limestone, cement, any one or a few in gypsum mixture.
Conditioner of the present invention, wherein including two parts of 100 mesh dolime, 200 mesh calcium-base bentonites it is a and
200 mesh flyash are a.
Conditioner of the present invention, wherein including four parts of 200 mesh dolime, two parts of 200 mesh calcium-base bentonite,
200 mesh diatomite are a, 200 mesh flyash are a, 100 mesh kaolin are a and cement is a.
The preparation method of any conditioner of the present invention, comprising the following steps: (1) a certain amount of dolomite is weighed,
Calcining, calcination temperature is 500-1300 degree, after the completion of calcining, is ground into powder, it is more than 50 mesh of powder size, preferably 200 mesh with
On；
(2) other a certain amount of inorganic powders are weighed, are uniformly mixed with dolime powder.
The calcination processing of dolomite primarily forms calcium carbonate (CaCO in 500-700 DEG C of calcining3) and magnesia (MgO),
700 DEG C or more are calcined, calcium carbonate (CaCO3) start to decompose into calcium oxide (CaO), form calcium oxide (CaO) and magnesia
(MgO), it calcines for 1300 DEG C or more, the calcium oxide (CaO) of formation and magnesia (MgO) vitrifying, the significant drop of reactivity with water
It is low.
Preferably, the calcination temperature of dolomite is 800-1100 degree, and calcined dolomite main component is calcium oxide
(CaO) and magnesia (MgO).
Sludge of the present invention refers to that municipal sludge, municipal sludge Hygienic Index and heavy metal index etc. are usually super
Mark needs to handle the utilization of rear resourcebility.
Hygienic Index mainly includes total number of bacteria, excrement colibacillus group value, roundworm egg etc..
Heavy metal index mainly includes chromium, mercury, lead, copper, arsenic etc..
Sludge conditioner of the present invention is preferentially used for the overproof sludge of Hygienic Index, and Hygienic Index mainly includes thin
Bacterium sum, excrement colibacillus group value, roundworm egg etc..
Sludge conditioner of the present invention is preferentially used for the overproof sludge of heavy metal, heavy metal mainly include chromium, mercury, lead,
Copper, arsenic etc..
The present invention is realized by long-term practice and screening study.Sludge conditioner of the present invention can individually make
With can also be used in mixed way with other inorganic powders.
Sludge conditioner of the invention, also can according to need, addition adhesive be made into mix with sludge after be easy disperse
The shape that is readily transported and uses such as granular pattern, ball-type, block type.
The usage amount of sludge conditioner of the present invention, according to the difference such as utilization orientation of sludge after the state and processing of sludge
It is different.The usage amount of sludge treating agent is calculated as 5% or more of sludge weight, best 10% or more with dolime.After processing
10.0 or more sludge pH, 10.5 or more Optimal pH.
The state of sludge before handling, such as water content, the pH value of sludge of sludge, Hygienic Index, the sludge of sludge
Content of beary metal etc..Utilization orientation of sludge after processing, such as landfill, agricultural, afforestation, the betterment of land etc..
Raw material sources of the present invention are extensive, low in raw material price and preparation process is simple.Sludge conditioner prepared by the present invention,
High treating effect, sludge product that treated can realize resource utilization.
Combined with specific embodiments below the conditioner and preparation method to of the invention suitable for municipal sludge recycling and
Using being described further.
Specific embodiment
Embodiment 1
The present embodiment is the preparation of sludge conditioner A:
Dolomite ore is taken, 100 mesh is crushed to after 800-900 DEG C of calcining and is made.
Embodiment 2
The present embodiment is the preparation of sludge conditioner B:
Dolomite ore is taken, 200 mesh is crushed to after 1000-1100 DEG C of calcining and is made.
Embodiment 3
The present embodiment is the preparation of sludge conditioner C:
Two parts of sludge conditioner A are taken, 200 mesh calcium-base bentonites are a, and 200 mesh flyash are a, are uniformly mixed and are made.
Embodiment 4
The present embodiment is the preparation of sludge conditioner D:
Tetra- parts of sludge conditioner B are taken, 200 two parts of mesh calcium-base bentonites, 200 mesh diatomite portions, 200 mesh flyash one
Part, 100 mesh kaolin are a, cement is a, are uniformly mixed and are made.
Embodiment 5
Example of the present embodiment for Treatment of Sludge, sludge source Mr. Yu's sludge from wastewater treatment plant, water content 80% are smelly
Taste is larger.
Above-mentioned sludge 200g is taken, adds sludge conditioner A of the present invention appropriate, stirs and evenly mixs, is adjusted to water content 60%, is measured
The index tests index list 1 such as pH value, hygiene, heavy metal is as follows before and after Treatment of Sludge, and treated, and sludge smell obviously subtracts
Gently, pH reaches 10.5 or more, and Hygienic Index, heavy metal index meet at GBT 24600-2009 urban sewage treatment plant sludge
Set betterment of land shale standard.
Table 1
| Project | Index before handling | Index after processing |
| pH | 8.1 | 10.6 |
| Total number of bacteria (butt, a/g) | 1.0×109 | 1.9×106 |
| Excrement colibacillus group (CFU/g) | 200 | 15 |
| Total mercury (mg/kg) | 1.2 | 4.5 |
| Arsenic and its compound (mg/kg) | 6.3 | 9.8 |
| Copper (mg/kg) | 113 | 34.4 |
| Total chromium (mg/kg) | 62.8 | 14.3 |
| Lead (mg/kg) | 5.1 | 21.3 |
Embodiment 6
Example of the present embodiment for Treatment of Sludge, sludge source Mr. Yu's sludge from wastewater treatment plant, water content 85% are smelly
Taste is larger.
Above-mentioned sludge 200g is taken, adds sludge conditioner B of the present invention appropriate, stirs and evenly mixs, is adjusted to water content 60%, is measured
The indexs (referring specifically to table 2) such as pH value, hygiene, heavy metal before and after Treatment of Sludge.Treated, and sludge smell is substantially reduced, pH
Reach 12.0 or more, Hygienic Index, heavy metal index meet GBT 24600-2009 urban sewage treatment plant sludge disposition soil
Ground improvement shale standard.
Table 2
| Project | Index before handling | Index after processing |
| pH | 7.8 | 12.1 |
| Total number of bacteria (butt, a/g) | 2.1×108 | 1.3×105 |
| Excrement colibacillus group (CFU/g) | 247 | 3 |
| Total mercury (mg/kg) | 2.0 | 4.2 |
| Arsenic and its compound (mg/kg) | 5.8 | 9.8 |
| Copper (mg/kg) | 98 | 30 |
| Total chromium (mg/kg) | 79 | 15 |
| Lead (mg/kg) | 21 | 42 |
Embodiment 7
Example of the present embodiment for Treatment of Sludge, sludge source Mr. Yu's sludge from wastewater treatment plant, water content 70% are smelly
Taste is larger.
Above-mentioned sludge 200g is taken, adds sludge conditioner C of the present invention appropriate, stirs and evenly mixs, is adjusted to water content 50%, is measured
The indexs (referring to table 3) such as pH value, hygiene, heavy metal before and after Treatment of Sludge.Treated, and sludge smell is substantially reduced, and pH reaches
11.0 or more, Hygienic Index, heavy metal index meet GBT 24600-2009 urban sewage treatment plant sludge disposition soil and change
It is good to use shale standard.
Table 3
| Project | Index before handling | Index after processing |
| pH | 7.0 | 11.1 |
| Total number of bacteria (butt, a/g) | 1.8×106 | 4.3×105 |
| Excrement colibacillus group (CFU/g) | 267 | 23 |
| Total mercury (mg/kg) | 1.9 | 3.6 |
| Arsenic and its compound (mg/kg) | 2.3 | 4.1 |
| Copper (mg/kg) | 101 | 31 |
| Total chromium (mg/kg) | 56 | 21 |
| Lead (mg/kg) | 35 | 54 |
Embodiment 8
Example of the present embodiment for Treatment of Sludge, sludge source Mr. Yu's sludge from wastewater treatment plant, water content 90% are smelly
Taste is larger.
Above-mentioned sludge 200g is taken, adds sludge conditioner D of the present invention appropriate, stirs and evenly mixs, is adjusted to water content 65%, is measured
The indexs (referring to table 4) such as pH value, hygiene, heavy metal before and after Treatment of Sludge.Treated, and sludge smell is substantially reduced, and pH reaches
11.0 or more, Hygienic Index, heavy metal index meet GBT 24600-2009 urban sewage treatment plant sludge disposition soil and change
It is good dirty with shale, GBT 23486-2009 urban sewage treatment plant sludge disposition afforestation shale, urban wastewater treatment firm
Mud disposes the standards such as agricultural shale.
Table 4
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (9)
1. a kind of conditioner suitable for municipal sludge recycling, it is characterised in that: be made of dolime.
2. conditioner according to claim 1, it is characterised in that: it further include other inorganic powders, other described inorganic powders
End be bentonite, diatomite, flyash, Paris white, kaolin powder, dolomite dust, electric appliance mountain flour, talcum powder, medical stone powder,
Conch meal, vermiculite power, pulverized limestone, cement, any one or a few in gypsum mixture.
3. conditioner according to claim 2, it is characterised in that: including two parts of 100 mesh dolime, 200 mesh calcium bases
Bentonite portion and 200 mesh flyash are a.
4. conditioner according to claim 3, it is characterised in that: including four parts of 200 mesh dolime, 200 mesh calcium bases
Two parts of bentonite, 200 mesh diatomite are a, 200 mesh flyash are a, 100 mesh kaolin are a and cement is a.
5. the preparation method of any conditioner of claim 1-4, it is characterised in that: (1) a certain amount of dolomite is weighed,
Calcining, calcination temperature is 500-1300 degree, after the completion of calcining, is ground into powder, more than 50 mesh of powder size；
(2) other a certain amount of inorganic powders are weighed, are uniformly mixed with dolime powder.
6. the preparation method of conditioner according to claim 5, it is characterised in that: the calcination temperature of dolomite is 800-
1100 degree.
7. the preparation method of conditioner according to claim 5, it is characterised in that: the powder size of dolomite is 200 mesh
More than.
8. the application of conditioner according to claim 1 to 4, it is characterised in that: the usage amount of conditioner is white to calcine
Marble is calculated as 5% or more of sludge weight.
9. the application of conditioner according to claim 8, it is characterised in that: the usage amount of conditioner is in terms of dolime
It is 10% or more of sludge weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507930.0A CN109320050A (en) | 2018-12-11 | 2018-12-11 | A kind of conditioner and preparation method and application suitable for municipal sludge recycling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507930.0A CN109320050A (en) | 2018-12-11 | 2018-12-11 | A kind of conditioner and preparation method and application suitable for municipal sludge recycling |
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| CN109320050A true CN109320050A (en) | 2019-02-12 |
Family
ID=65257127
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|---|---|---|---|
| CN201811507930.0A Pending CN109320050A (en) | 2018-12-11 | 2018-12-11 | A kind of conditioner and preparation method and application suitable for municipal sludge recycling |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110104913A (en) * | 2019-03-29 | 2019-08-09 | 浙江融信环保科技有限公司 | A kind of sediment repairing agent and its method applied to in-situ sediment remediation |
| CN111533396A (en) * | 2020-04-13 | 2020-08-14 | 湖州智清环保科技有限公司 | Novel urban oily sludge modified curing agent |
| CN111661993A (en) * | 2019-03-06 | 2020-09-15 | 上海助瀛环保科技有限公司 | Sludge curing agent and preparation method and use method thereof |
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| CN106348554A (en) * | 2016-11-08 | 2017-01-25 | 郑州诚合信息技术有限公司 | Sludge treatment agent and preparation method thereof |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102108003A (en) * | 2011-01-26 | 2011-06-29 | 郑建国 | Sludge dewatering additive |
| CN103641285A (en) * | 2013-11-30 | 2014-03-19 | 河南华天环保科技有限公司 | Conditioning agent for sludge treatment and method for sludge treatment by using same |
| CN105693068A (en) * | 2014-11-26 | 2016-06-22 | 池州灵芝化建材料科技有限公司 | Efficient sludge conditioner |
| CN104909958A (en) * | 2015-05-27 | 2015-09-16 | 广东万山土壤修复技术有限公司 | Soil conditioner and production method thereof |
| CN105174686A (en) * | 2015-10-12 | 2015-12-23 | 北京高能时代环境技术股份有限公司 | Curing agent for curing and stabilizing municipal dewatered sludge and preparation method and application of curing agent |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111661993A (en) * | 2019-03-06 | 2020-09-15 | 上海助瀛环保科技有限公司 | Sludge curing agent and preparation method and use method thereof |
| CN110104913A (en) * | 2019-03-29 | 2019-08-09 | 浙江融信环保科技有限公司 | A kind of sediment repairing agent and its method applied to in-situ sediment remediation |
| CN111533396A (en) * | 2020-04-13 | 2020-08-14 | 湖州智清环保科技有限公司 | Novel urban oily sludge modified curing agent |
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