CN105217923A - Sludge slurry deep dehydration amendment and preparation method thereof - Google Patents
Sludge slurry deep dehydration amendment and preparation method thereof Download PDFInfo
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- CN105217923A CN105217923A CN201410306080.3A CN201410306080A CN105217923A CN 105217923 A CN105217923 A CN 105217923A CN 201410306080 A CN201410306080 A CN 201410306080A CN 105217923 A CN105217923 A CN 105217923A
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Abstract
The invention discloses a kind of sludge slurry deep dehydration amendment, it contains the following component measured by mass percentage: flyash 30 ~ 70%, gac end 5 ~ 20%, wilkinite 10 ~ 30%, calcium lime powder 5 ~ 20%, aluminium iron polychloride 4 ~ 10%.The present invention also comprises the preparation method of sludge slurry deep dehydration amendment, its step is as follows: first the flyash measured, gac end, wilkinite, calcium lime powder are mixed into compound in the lump, in addition the aluminium iron polychloride measured is placed in container, the water adding equivalent is modulated into mixed solution, finally compound and mixed solution is thrown in stirrer in the lump and stirs.Instant component is simple, preparation is easy, raw material sources are extensive, with low cost, the most important thing is that practical application of the present invention does not exist secondary pollution problem, accomplishes discharged wastewater met the national standard.
Description
Technical field
The present invention relates to a kind of dewatering agent, specifically, the present invention relates to a kind of amendment for sludge slurry deep dehydration.The invention still further relates to the preparation method of sludge slurry deep dehydration amendment.
Background technology
Byproduct after sewage work's water purification is sludge slurry.Because sludge slurry is rich in the material such as a large amount of water and microorganism, organism and heavy metal, deposit easy fermentation under physical environment, the stench of generation, pollution surrounding enviroment, sludge slurry is also a kind of pollutent that must administer thus.Because sludge slurry water ratio is about 85%, this kind of gluey mud is difficult to dispose, and only taking off wherein a part of water could create conditions for recycling.Now, industrialization sludge slurry dehydration technique is mainly by mechanical dehydration, and because containing cellular water in sludge slurry, pure depended on pressure is difficult to discharge.In order to improve mechanical dehydration efficiency further, prior art makes modification by mixing dehydrating and conditioning agent in sludge slurry, and to reduce water molecules surface tension, broken wall flows out.The dehydrating and conditioning agent of prior art is the composition of iron trichloride and lime, and its component is simple, it is easy, easy to use to prepare, and is incorporated into modifying function in sludge slurry obvious, reaches the object accelerating dewatering efficiency.But iron trichloride used is chloride many, because chlorion is soluble in water, during dehydration, chlorion is discharged with water, and the glassware for drinking water containing high waviness chlorion is corrosive, and except to forming corrosion with dehydration equipment in dehydration, also strengthens the sewage disposal difficulty of discharge.This dehydrating and conditioning agent that there is secondary sludge, is difficult to obtain further genralrlization application under existing environmental protection policy.
Summary of the invention
There is the problem of secondary pollution mainly for existing dehydrating and conditioning agent in the present invention, proposes sludge slurry deep dehydration amendment that a kind of component is reasonable, raw material is easy to get, with low cost, non-corrosiveness, dewatering efficiency are high and preparation method thereof.Do not produce secondary pollution problem after the present invention's application, discharge of wastewater is up to standard.
The present invention is achieved through the following technical solutions technical object.
Sludge slurry deep dehydration amendment, its improvements are, it contains the following component measured by mass percentage:
Flyash 30 ~ 70%
Gac end 5 ~ 20%
Wilkinite 10 ~ 30%
Calcium lime powder 5 ~ 20%
Aluminium iron polychloride 4 ~ 10%.
For the preparation method of sludge slurry deep dehydration amendment, follow these steps to carry out:
(1) flyash measured, gac end, wilkinite, calcium lime powder are mixed into compound in the lump;
(2) be placed in container by the aluminium iron polychloride measured, the water adding equivalent is modulated into mixed solution;
(3) compound and mixed solution are thrown in stirrer in the lump stir.
The present invention compared with prior art, has following positively effect:
1, component raw material wide material sources, cheap;
2, the gac heavy metal in component has very strong passivation and adsorption, subtracts obviously dirty;
3, make full use of the flyash of industrial waste, reach the effect of the treatment of wastes with processes of wastes against one another;
4, dewatering efficiency is high, and the mud dewatered is applicable to following resource and utilizes condition.
Embodiment
Embodiment 1
The present embodiment is used for the sludge slurry dehydration that municipal sludge precipitates, in such sludge slurry organism and content of microorganisms many, for this type of sludge slurry deep dehydration amendment, be flyash 50%, gac end 20%, wilkinite 10%, calcium lime powder 14% and aluminium iron polychloride 6% containing the component measured by mass percentage.Prepare the method for sludge slurry deep dehydration amendment with above-mentioned raw materials, undertaken by following row step:
(1) flyash measured, gac end, wilkinite, calcium lime powder are mixed into compound in the lump;
(2) be placed in container by the aluminium iron polychloride measured, the water adding equivalent is modulated into mixed solution;
(3) compound and mixed solution are thrown in stirrer in the lump stir.
Embodiment 2
The present embodiment is used for the sludge slurry dehydration that petrochemical industry settlement of sewage is got off, complicated component in such sludge slurry, organism is few, be main raw material for this type of sludge slurry deep dehydration amendment with flyash, concrete proportioning is measured by mass percentage, wherein has flyash 70%, gac end 5%, wilkinite 16%, calcium lime powder 5% and aluminium iron polychloride 4%.Relevant preparation method is identical with embodiment 1.
Embodiment 3
The present embodiment is used for the sludge slurry dehydration that pharmaceutical factory of traditional Chinese medicine's settlement of sewage is got off, such sludge slurry is in acid, wherein organic content is large, calcium lime powder and polymerize aluminum chloride iron level is then strengthened for this type of sludge slurry deep dehydration amendment, concrete proportioning is measured by mass percentage, wherein has flyash 30%, gac end 10%, wilkinite 30%, calcium lime powder 20% and aluminium iron polychloride 10%.Relevant preparation method is identical with embodiment 1.
From above-described embodiment applicable cases, sludge slurry deep dehydration amendment component of the present invention is simple, and easily, raw material sources are extensive, and with low cost, most importantly practical application of the present invention does not exist secondary pollution problem, accomplishes discharged wastewater met the national standard in preparation.Rationally, orthofunction, dehydrating effect is obvious, and its mechanism is the electric neutrality adsorption bridging effect making full use of aluminium iron polychloride, and destroy the stability of particle in sludge slurry, the particle of scatter-gather, improves dewatering for each component configuration of the present invention.Unslaked lime plays Coagulation aiding in component, and utilizes the alkaline environment killing microorganisms formed, and plays deodorizing, deodorization effect.What in the present invention, consumption was maximum is flyash, flyash is trade waste, but it has very large surface-area and pore volume, after mixing with activity charcoal powder, the ability, particularly heavy metal that effectively can improve the toxic substance in absorption sludge slurry have very strong passivation and adsorption.
Actual amount of the present invention all enters to mix by 5 ~ 20% of sludge slurry total mass to be drained off, and wherein compound accounts for 40%, and mixed solution accounts for 60%.Under the effect of sludge slurry deep dehydration amendment, the surface tension of cellular water in direct reduction sludge slurry, the easy broken wall dehydration of cellular water when being subject to natural compression, the dewatered sludge water ratio obtained after dewatering machine operation is only 40 ~ 60%, reduces about 10% than routine techniques.Moisture percentage in sewage sludge is down to this degree and can have been met following resource and utilize condition, both may be used for making solid-fuelled main raw material, also can as material of construction.
Claims (2)
1. a sludge slurry deep dehydration amendment, is characterized in that, it contains the following component measured by mass percentage:
Flyash 30 ~ 70%
Gac end 5 ~ 20%
Wilkinite 10 ~ 30%
Calcium lime powder 5 ~ 20%
Aluminium iron polychloride 4 ~ 10%.
2., for a preparation method for sludge slurry deep dehydration amendment, it is characterized in that following these steps to carry out:
(1) flyash measured, gac end, wilkinite, calcium lime powder are mixed into compound in the lump;
(2) be placed in container by the aluminium iron polychloride measured, the water adding equivalent is modulated into mixed solution;
(3) compound and mixed solution are thrown in stirrer in the lump stir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410306080.3A CN105217923A (en) | 2014-07-01 | 2014-07-01 | Sludge slurry deep dehydration amendment and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410306080.3A CN105217923A (en) | 2014-07-01 | 2014-07-01 | Sludge slurry deep dehydration amendment and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105217923A true CN105217923A (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410306080.3A Pending CN105217923A (en) | 2014-07-01 | 2014-07-01 | Sludge slurry deep dehydration amendment and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110204026A (en) * | 2019-06-12 | 2019-09-06 | 江西省万年中南环保产业协同研究院有限公司 | A kind of inorganic agent suitable for municipal sewage |
| CN110451759A (en) * | 2019-09-06 | 2019-11-15 | 黄海星 | A kind of method that coal slime removes moisture removal |
| CN110818212A (en) * | 2019-12-02 | 2020-02-21 | 河北蓝江生物环保科技有限公司 | Efficient sludge drying agent for drying sludge and use method thereof |
-
2014
- 2014-07-01 CN CN201410306080.3A patent/CN105217923A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110204026A (en) * | 2019-06-12 | 2019-09-06 | 江西省万年中南环保产业协同研究院有限公司 | A kind of inorganic agent suitable for municipal sewage |
| CN110451759A (en) * | 2019-09-06 | 2019-11-15 | 黄海星 | A kind of method that coal slime removes moisture removal |
| CN110818212A (en) * | 2019-12-02 | 2020-02-21 | 河北蓝江生物环保科技有限公司 | Efficient sludge drying agent for drying sludge and use method thereof |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160106 |