CN109970162A - A kind of novel dephosphorization sustained release agent and preparation method thereof - Google Patents
A kind of novel dephosphorization sustained release agent and preparation method thereof Download PDFInfo
- Publication number
- CN109970162A CN109970162A CN201910245634.6A CN201910245634A CN109970162A CN 109970162 A CN109970162 A CN 109970162A CN 201910245634 A CN201910245634 A CN 201910245634A CN 109970162 A CN109970162 A CN 109970162A
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- CN
- China
- Prior art keywords
- sustained release
- release agent
- stearic acid
- dephosphorization
- ferric sulfate
- 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.)
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of preparation methods of Novel dephosphorization sustained release agent.Its way are as follows: stearic acid is heated and is melted, bodied ferric sulfate is then added, dispersion is stirred to mixture under ultrasonic wave added, the stearic acid and polyaluminum sulfate iron mixture melted, mixture is cooled down in a mold, forms, dephosphorization sustained release agent is obtained after demoulding.The present invention is by way of being mixed with stearic acid and bodied ferric sulfate not soluble in water to obtain sustained release agent, reduce the rate of release of bodied ferric sulfate, the long-term dephosphorization for realizing bodied ferric sulfate, in the case where not promoting O&M cost, it is ensured that the long-term phosphor-removing effect of technique.Meanwhile the present invention is avoided with good environment friendly as covering material using the stearic acid for being easier to be decomposed by the microorganisms and causes secondary pollution.Stearic acid also can be used as a kind of slow release carbon source simultaneously, be conducive to the growth and breeding of microorganism, facilitate the effect of further lifting sewage processing.
Description
Technical field
The invention belongs to water process reagent fields, and in particular to a kind of novel dephosphorization sustained release agent and preparation method thereof.
Background technique
Mainly there are A2O, biofilter and artificial swamp etc. in the treatment process of common domestic sewage in rural areas at present.A2O
Process requirement, which relies on good process conditions, ensures the good environment of polyP bacteria, while periodically realizing to the removal of sludge good
Phosphor-removing effect, but need higher operation management horizontal.It is real to the absorption of phosphorus that biofilter and artificial swamp rely primarily on filler
Now to the removal of phosphorus, but the absorption of filler reach saturation after phosphor-removing effect it is poor.Technique common at present is in sanitary sewage
Total phosphorus removal effect it is undesirable, water outlet total phosphorus be difficult to it is up to standard.At present for the method master of deep phosphorous removal in sanitary sewage
It to add the flocculants such as bodied ferric sulfate, polyaluminum ferric chloride using the physicochemical methods such as chemical precipitation, external source and realize fastly
Fast deep phosphorous removal, phosphor-removing effect are preferable.But since this method needs periodically continually to add dephosphorization agent etc., need higher people
Power, management cost are not suitable for current rural domestic sewage treatment process.
Summary of the invention
It is an object of the invention to solve the problems, such as that phosphate eliminating flocculant can not be sustained in the prior art, and it is directed to above-mentioned skill
Art status provides a kind of new sustained release dephosphorization agent.
The technical scheme of the invention to solve the technical problem is:
A kind of preparation method of Novel dephosphorization sustained release agent, specific practice are as follows: stearic acid is heated and is melted, is then added poly-
Ferric sulfate is closed, dispersion is stirred to mixture under ultrasonic wave added, the stearic acid melted and polyaluminum sulfate iron mixture,
Mixture is cooled down in a mold, forms, dephosphorization sustained release agent is obtained after demoulding.
Preferably, the stearic acid heating fusion temperature is 75 DEG C~85 DEG C.
Preferably, the mixing mass ratio of the stearic acid and bodied ferric sulfate is 1:1.
Preferably, mixing speed of the mixture under ultrasonic wave added is 200r/min.
Preferably, be dispersed with stirring time of the mixture under ultrasonic wave added is 10min.
Another object of the present invention is to provide a kind of Novel dephosphorization sustained releases such as the preparation of above-mentioned either a program the method
Agent.
The sustained release agent is using stearic acid not soluble in water to soluble easily in water and be quickly dissolved in the bodied ferric sulfate of water and mix
Cladding is closed, a kind of porous sustained release agent is formed.In the porous sustained-release agent, bodied ferric sulfate disperses and is covered by stearic acid,
After sustained release agent is put into sewage, the bodied ferric sulfate for being attached to sustained release agent surface is first dissolved in water, poly- inside sustained release agent
It closes ferric sulfate to be gradually dissolved in water by the hole on surface, realizes the sustained release of bodied ferric sulfate, to realize to the long-term steady of phosphorus
Fixed removal.
Compared with prior art, the present invention has the advantages that being imitated for current domestic sewage in rural areas common technology dephosphorization
The undesirable problem of fruit, the method for introducing physical chemistry dephosphorization promote the removal rate to phosphorus.The present invention is by will be not soluble in water
Stearic acid and bodied ferric sulfate are mixed with to obtain the mode of sustained release agent, reduce the rate of release of bodied ferric sulfate, realize polymerization
The long-term dephosphorization of ferric sulfate, in the case where not promoting O&M cost, it is ensured that the long-term phosphor-removing effect of technique.Meanwhile this hair
It is bright to avoid with good environment friendly as covering material using the stearic acid for being easier to be decomposed by the microorganisms and cause two
Secondary pollution.Stearic acid also can be used as a kind of slow release carbon source simultaneously, is conducive to the growth and breeding of microorganism, helps further to be promoted
The effect of sewage treatment.
Detailed description of the invention
Fig. 1 is the release rate performance graph of dephosphorization sustained release agent.
Specific embodiment
Specific embodiments of the present invention will be described in further detail below.The invention is not limited to following implementations
Example.
Embodiment 1.
100g stearic acid is taken to be added in triangular pyramidal bottle, heating water bath adds 100g polymerised sulphur to 75~85 DEG C of fusings
Sour iron, is tentatively uniformly mixing to obtain initial mixture.Then the initial mixture in triangular pyramidal bottle is turned with 200r/min
Speed stirring, while assisting carrying out ultrasonic disperse, ultrasonic and stirring linkage handles total 10min, the two is made to be sufficiently mixed dispersion.
After 10min, quickly the stearic acid of melting and polyaluminum sulfate iron mixture are poured into sustained release agent grain forming mold.It is one section cooling
After time, sustained release agent is can be obtained in demoulding.
It is not soluble in water and be easier to the stearic acid being decomposed by the microorganisms as covering material in the sustained release agent, make polymerised sulphur
Sour iron part is exposed at sustained release agent surface, is partially covered by inside sustained release agent, thus reduces the rate of release of bodied ferric sulfate, real
The long-term dephosphorization of existing bodied ferric sulfate.
In order to verify effect of the invention, 1000mL deionized water is added in the sustained release agent being prepared in the present embodiment
In, carry out release rate assay.Measurement result is as shown in Figure 1, it is seen that and the total release rate that sustained release agent adds the 10th day is 48.1%,
Linear release can be achieved substantially in 25 days after sustained release agent adds.Therefore, the slow release effect of the sustained release agent is preferable, it is ensured that long-term
Stable phosphor-removing effect.
It can be seen that sustained release dephosphorization agent of the invention has the beneficial effect that:
1, chemical precipitation method dephosphorization is introduced, in rural domestic sewage treatment to realize good phosphor-removing effect.
2, stearic acid is mixed with bodied ferric sulfate, can effectively reduce the rate of release of bodied ferric sulfate, primary addition is
It can ensure that phosphor-removing effect steady in a long-term, cost is relatively low for operation management.
3, there is good environment friendly, avoid as covering material using the stearic acid being easily decomposed by the microorganisms
Cause secondary pollution.At the same time as slow release carbon source, the carbon-nitrogen ratio in sewage is adjusted, facilitates the effect of lifting sewage processing.
Above-mentioned embodiment is only a preferred solution of the present invention, so it is not intended to limiting the invention.Have
The those of ordinary skill for closing technical field can also make various changes without departing from the spirit and scope of the present invention
Change and modification.Therefore all mode technical solutions obtained for taking equivalent substitution or equivalent transformation, all fall within guarantor of the invention
It protects in range.
Claims (6)
1. a kind of preparation method of Novel dephosphorization sustained release agent, it is characterised in that: heat stearic acid and melt, polymerised sulphur is then added
Sour iron is stirred dispersion to mixture under ultrasonic wave added, and the stearic acid melted and polyaluminum sulfate iron mixture will mix
It closes object to cool down in a mold, forms, dephosphorization sustained release agent is obtained after demoulding.
2. the preparation method of Novel dephosphorization sustained release agent as described in claim 1, it is characterised in that: the stearic acid heating is molten
Changing temperature is 75 DEG C~85 DEG C.
3. the preparation method of Novel dephosphorization sustained release agent as described in claim 1, it is characterised in that: the stearic acid with polymerize
The mixing mass ratio of ferric sulfate is 1:1.
4. the preparation method of Novel dephosphorization sustained release agent as described in claim 1, it is characterised in that: mixture is under ultrasonic wave added
Mixing speed be 200r/min.
5. the preparation method of Novel dephosphorization sustained release agent as described in claim 1, it is characterised in that: mixture is under ultrasonic wave added
Be dispersed with stirring the time be 10min.
6. a kind of Novel dephosphorization sustained release agent prepared such as Claims 1 to 5 either method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910245634.6A CN109970162A (en) | 2019-03-28 | 2019-03-28 | A kind of novel dephosphorization sustained release agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910245634.6A CN109970162A (en) | 2019-03-28 | 2019-03-28 | A kind of novel dephosphorization sustained release agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109970162A true CN109970162A (en) | 2019-07-05 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910245634.6A Pending CN109970162A (en) | 2019-03-28 | 2019-03-28 | A kind of novel dephosphorization sustained release agent and preparation method thereof |
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| CN (1) | CN109970162A (en) |
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| CN103071436A (en) * | 2013-02-05 | 2013-05-01 | 华侨大学 | Preparation method for sustained release potassium permanganate microcapsule |
| CN104310555A (en) * | 2014-11-06 | 2015-01-28 | 苏州嘉净环保科技股份有限公司 | Dephosphorizing method for sewage treatment equipment |
| CN104782622A (en) * | 2015-04-30 | 2015-07-22 | 山西大学 | Hydrogen sulfide slow-release inhibitor as well as preparation method and application thereof |
| CN106495300A (en) * | 2016-12-19 | 2017-03-15 | 山东中车华腾环保科技有限公司 | A kind of phosphorus-removing carrier and method for sewage disposal device |
| CN107082479A (en) * | 2017-06-02 | 2017-08-22 | 北京大学 | A kind of iron system phosphate eliminating flocculant with slow-release function and its preparation method and application |
| CN107792944A (en) * | 2016-08-30 | 2018-03-13 | 福瑞莱环保科技（深圳）股份有限公司 | A kind of carbon source sustained release agent for Biological Treatment of Wastewater |
| CN107963701A (en) * | 2017-12-08 | 2018-04-27 | 中科协创环境科技江苏有限公司 | One kind sustained release flocculant and preparation method thereof |
| CN108383175A (en) * | 2018-02-07 | 2018-08-10 | 优德太湖水务（苏州）有限公司 | Slow release tablet and preparation method thereof for decentralized type sewage advanced treating |
-
2019
- 2019-03-28 CN CN201910245634.6A patent/CN109970162A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327978A (en) * | 2008-07-15 | 2008-12-24 | 南通立源水处理技术有限公司 | Slow release composite flocculant |
| CN103071436A (en) * | 2013-02-05 | 2013-05-01 | 华侨大学 | Preparation method for sustained release potassium permanganate microcapsule |
| CN104310555A (en) * | 2014-11-06 | 2015-01-28 | 苏州嘉净环保科技股份有限公司 | Dephosphorizing method for sewage treatment equipment |
| CN104782622A (en) * | 2015-04-30 | 2015-07-22 | 山西大学 | Hydrogen sulfide slow-release inhibitor as well as preparation method and application thereof |
| CN107792944A (en) * | 2016-08-30 | 2018-03-13 | 福瑞莱环保科技（深圳）股份有限公司 | A kind of carbon source sustained release agent for Biological Treatment of Wastewater |
| CN106495300A (en) * | 2016-12-19 | 2017-03-15 | 山东中车华腾环保科技有限公司 | A kind of phosphorus-removing carrier and method for sewage disposal device |
| CN107082479A (en) * | 2017-06-02 | 2017-08-22 | 北京大学 | A kind of iron system phosphate eliminating flocculant with slow-release function and its preparation method and application |
| CN107963701A (en) * | 2017-12-08 | 2018-04-27 | 中科协创环境科技江苏有限公司 | One kind sustained release flocculant and preparation method thereof |
| CN108383175A (en) * | 2018-02-07 | 2018-08-10 | 优德太湖水务（苏州）有限公司 | Slow release tablet and preparation method thereof for decentralized type sewage advanced treating |
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Application publication date: 20190705 |