CN107879462A - Domestic sewage treating compound - Google Patents
Domestic sewage treating compound Download PDFInfo
- Publication number
- CN107879462A CN107879462A CN201711214733.5A CN201711214733A CN107879462A CN 107879462 A CN107879462 A CN 107879462A CN 201711214733 A CN201711214733 A CN 201711214733A CN 107879462 A CN107879462 A CN 107879462A
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- China
- Prior art keywords
- tio
- domestic sewage
- solution
- treating compound
- sewage treating
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides domestic sewage treating compound, its preparation method are as follows:To TiO2Dispersant is added in solution, sodium metasilicate regulation pH value is pre-dispersed to 9~10 progress, at 40~50 DEG C, adds TiO2The silica of quality 0.1~0.3%, it is aged 2~3h;Then dispersant is added again under heat-retaining condition, stirred evenly, adjust pH value of solution to 8.5~9.5 with aluminum sulfate, add TiO2The Al2O3 of quality 0.01~0.03%, 2~3h is aged, filtered, dried, produce.The additive of the present invention uses multilayer coating structure technique, der Pilz tentacle can be snarled layer by layer, greatly reduce der Pilz specific surface area, contain the competitive advantage of der Pilz and zoogloea, keep strong status of the zoogloea in substrate competition, efficiency of sludge treatment is improved, so as to effectively prevent and contain the outburst of sludge bulking.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of domestic sewage treating compound.
Background technology
City domestic sewage typically uses active sludge treatment process, if A/O techniques are wherein conventional one kind, many institutes
It is well known that active sludge treatment process sludge bulking incidence is high, the incidence of even European and American developed countries is all up to
50~60%, the incidence of city domestic sewage treatment plants at different levels of China is just higher.Once occurring, it endangers pole for sludge bulking
To be serious, not only make sludge loss, go out aqueous suspension (SS) severe overweight, and be also greatly reduced the place of sewage disposal system
Reason ability, while need considerable time ability recovery system normal.Sewage disposal system for using activated sludge process,
Active pollution index is made up of der Pilz and zoogloea, and der Pilz is attached on der Pilz as skeleton, zoogloea so that
Sludge flco has preferably flocculation, sedimentation and concentration performance.When der Pilz amount reproduction, when its quantity is close to zoogloea, silk
Shape bacterium stretches out from sludge flco, forms the activated sludge skeleton of " seta ball " shape, and these stretch to countless " tentacles " of outside, resistance
Hindered the compression between flco, sludge bulking just there occurs, if not containing the further breeding of der Pilz, once the number of der Pilz
Amount exceedes zoogloea, and stretching out the tentacle of zoogloea, to may be prevented from flco agglomerating so that and flco is loose, and settling property substantially reduces,
Sludge bulking will break out.More than 90% sludge bulking is all relevant with the hyper-proliferative of der Pilz in activated sludge bulking,
That is der Pilz hyper-proliferative is controlled with regard to the generation of sludge bulking can be controlled.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind prevention and containment der Pilz excessive multiplication, caused dirt is avoided
The sewage-treating agent of mud expansion, and can effectively improve effluent index.
Technical scheme provided by the invention is a kind of domestic sewage treating compound, and its preparation method is as follows:To TiO2In solution
Dispersant is added, sodium metasilicate regulation pH value is pre-dispersed to 9~10 progress, at 40~50 DEG C, adds TiO2Quality 0.1~
0.3% silica, it is aged 2~3h;Then dispersant is added again under heat-retaining condition, stirred evenly, adjusted with aluminum sulfate molten
Liquid pH to 8.5~9.5, add TiO2The Al2O3 of quality 0.01~0.03%, 2~3h is aged, filtered, dried, produce.
During first time coated with silica, the addition of silica is few, only the 0.1 of titania weight~
0.3%, temperature of plate is relatively low, only 40~50 DEG C, and now silica forms loose island cladding, bag in titanium dioxide surface
Cover very sparse.Because first time covering amount is less, substantial amounts of titanium dioxide is there remains in solution, continues to add dispersant,
Titanium dioxide is extremely easily adsorbed at the loose island table of the titanium dioxide granule of oxidized aluminium cladding in the presence of dispersant
On face, add aluminum oxide and carry out second of alumina-coated, now temperature of plate is still maintained at 40~50 DEG C, therefore, after
Continue and more sparse island cladding is formed in titanium dioxide surface.Thin titanium dioxide surface is coated on because aluminum oxide is sparse
On, larger gap is left, and aperture diameter is more than der Pilz tentacle diameter, der Pilz tentacle can be extend into inside inorganic agent,
And the grid system that titanium dioxide is unique, der Pilz tentacle, which can make a noise, snarls, due to general longer, the application of der Pilz tentacle
Using multilayer coating structure, it can make a noise and snarl der Pilz tentacle, greatly reduce der Pilz specific surface area, contain der Pilz and bacterium
The competitive advantage of micelle, strong status of the zoogloea in substrate competition is kept, improves efficiency of sludge treatment, so as to effectively prevent
With the outburst of containment sludge bulking.
TiO2The mass concentration of solution is 20~30%.
Institute's dispersant is calgon.
The addition of calgon is TiO2The 0.1~0.2% of weight.
The drying is that filter cake is baked into 12~24h at 105~120 DEG C.
The application method of this product:Launched in the water inlet of sewage treatment plants (using active sludge treatment process) dirty
Water treatment agent, as wastewater influent COD > 100mg/L, 5~10kg is launched by sewage per ton;When wastewater influent COD concentration is 50
During~100mg/L, 2~5kg is launched by sewage per ton;When wastewater influent COD concentration is 30~50mg/L, thrown by sewage per ton
Put 0.5~2kg.
Compared with prior art, additive of the invention uses multilayer coating structure technique, can snarl der Pilz tentacle layer by layer, greatly
It is big to reduce der Pilz specific surface area, contain the competitive advantage of der Pilz and zoogloea, keep zoogloea having in substrate competition
Power status, efficiency of sludge treatment is improved, so as to effectively prevent and contain the outburst of sludge bulking.
Embodiment
The present invention is further elaborated for specific examples below, but not as a limitation of the invention.
Embodiment 1
To the TiO that mass concentration is 20%2Calgon is added in solution, the addition of calgon is TiO2Weight
The 0.1% of amount, sodium metasilicate regulation pH value is pre-dispersed to 9 progress, at 40 DEG C, adds TiO2The silica of quality 0.1%, it is old
Change 2h;Then calgon is added again under heat-retaining condition, the addition of calgon is TiO2The 0.1% of weight,
Stir evenly, adjust pH value of solution to 8.5 with aluminum sulfate, add TiO2The AL2O3 of quality 0.01%, it is aged 2h, filtering, at 105 DEG C
12h is baked, is produced.
Embodiment 2
To the TiO that mass concentration is 30%2Calgon is added in solution, the addition of calgon is TiO2Weight
The 0.2% of amount, sodium metasilicate regulation pH value is pre-dispersed to 10 progress, at 50 DEG C, adds TiO2The silica of quality 0.3%,
It is aged 3h;Then calgon is added again under heat-retaining condition, the addition of calgon is TiO2Weight
0.2%, stir evenly, adjust pH value of solution to 9.5 with aluminum sulfate, add TiO2The AL2O3 of quality 0.03%, 3h is aged, filtered,
24h is baked at 120 DEG C, is produced.
Embodiment 3
To the TiO that mass concentration is 25%2Calgon is added in solution, the addition of calgon is TiO2Weight
The 0.15% of amount, sodium metasilicate regulation pH value is pre-dispersed to 9.5 progress, at 45 DEG C, adds TiO2The titanium dioxide of quality 0.2%
Silicon, it is aged 2.5h;Then calgon is added again under heat-retaining condition, the addition of calgon is TiO2Weight
0.15%, stir evenly, adjust pH value of solution to 9 with aluminum sulfate, add TiO2The AL2O3 of quality 0.02%, 2.5h is aged, filtered,
18h is baked at 115 DEG C, is produced.
Embodiment 4
To the TiO that mass concentration is 20%2Calgon is added in solution, the addition of calgon is TiO2Weight
The 0.2% of amount, sodium metasilicate regulation pH value is pre-dispersed to 9 progress, at 50 DEG C, adds TiO2The silica of quality 0.1%, it is old
Change 2h;Then calgon is added again under heat-retaining condition, the addition of calgon is TiO2The 0.1% of weight,
Stir evenly, adjust pH value of solution to 9.5 with aluminum sulfate, add TiO2The AL2O3 of quality 0.03%, it is aged 2h, filtering, at 120 DEG C
12h is baked, is produced.
Experimental example
By taking certain municipal sewage plant as an example, using A/O handling process, table 1 is that the factory 2017 year connects in April, 1~2017
Continuous four months actual operating data, its water outlet reach《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002)
Middle secondary standard.Applicant carried out launching the experiment of sewage-treating agent continuous four days of April 1~4 in 2017, and this four days respectively
The sewage-treating agent of the embodiment of the present invention 1~4 is added in water inlet, and is adjusted according to same day inflow and inlet COD concentration
Injected volume, detection water outlet are fully achieved《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002) one-level A is marked in
Standard, refer to and be shown in Table 2.
Table 1
Table 2
Claims (5)
1. domestic sewage treating compound, it is characterised in that:Its preparation method is as follows:To TiO2Dispersant is added in solution, sodium metasilicate is adjusted
It is pre-dispersed to 9~10 progress to save pH value, at 40~50 DEG C, adds TiO2The silica of quality 0.1~0.3%, ageing 2~
3h;Then dispersant is added again under heat-retaining condition, stirred evenly, adjust pH value of solution to 8.5~9.5 with aluminum sulfate, add TiO2
The Al2O3 of quality 0.01~0.03%, 2~3h is aged, filtered, dried, produce.
2. domestic sewage treating compound according to claim 1, it is characterised in that:TiO2The mass concentration of solution be 20~
30%.
3. domestic sewage treating compound according to claim 1, it is characterised in that:Institute's dispersant is calgon.
4. domestic sewage treating compound according to claim 3, it is characterised in that:The each addition of calgon is
TiO2The 0.1~0.2% of weight.
5. domestic sewage treating compound according to claim 1, it is characterised in that:The drying is 105~120 by filter cake
12~24h is baked at DEG C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711214733.5A CN107879462A (en) | 2017-11-28 | 2017-11-28 | Domestic sewage treating compound |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711214733.5A CN107879462A (en) | 2017-11-28 | 2017-11-28 | Domestic sewage treating compound |
Publications (1)
Publication Number | Publication Date |
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CN107879462A true CN107879462A (en) | 2018-04-06 |
Family
ID=61775711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201711214733.5A Pending CN107879462A (en) | 2017-11-28 | 2017-11-28 | Domestic sewage treating compound |
Country Status (1)
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CN (1) | CN107879462A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106944153A (en) * | 2017-03-14 | 2017-07-14 | 泰山医学院 | A kind of sandwich construction nano-complex and its application |
CN107008242A (en) * | 2017-04-24 | 2017-08-04 | 中国科学院理化技术研究所 | Nano powder photocatalytic material of porous silicon dioxide coated titanium dioxide and preparation method thereof |
CN107162074A (en) * | 2017-06-05 | 2017-09-15 | 丁凯凯 | Domestic sewage treating compound |
CN107199027A (en) * | 2017-05-24 | 2017-09-26 | 天津大学 | Porous alumina cladding titanium dioxide photochemical catalyst and Preparation method and use |
-
2017
- 2017-11-28 CN CN201711214733.5A patent/CN107879462A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106944153A (en) * | 2017-03-14 | 2017-07-14 | 泰山医学院 | A kind of sandwich construction nano-complex and its application |
CN107008242A (en) * | 2017-04-24 | 2017-08-04 | 中国科学院理化技术研究所 | Nano powder photocatalytic material of porous silicon dioxide coated titanium dioxide and preparation method thereof |
CN107199027A (en) * | 2017-05-24 | 2017-09-26 | 天津大学 | Porous alumina cladding titanium dioxide photochemical catalyst and Preparation method and use |
CN107162074A (en) * | 2017-06-05 | 2017-09-15 | 丁凯凯 | Domestic sewage treating compound |
Non-Patent Citations (1)
Title |
---|
韩长日: "《精细无机化学品制造技术》", 31 August 2008 * |
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Application publication date: 20180406 |