CN112299541A - Efficient composite phosphorus removal agent suitable for capacity-expansion sewage treatment system and preparation method thereof - Google Patents
Efficient composite phosphorus removal agent suitable for capacity-expansion sewage treatment system and preparation method thereof Download PDFInfo
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- CN112299541A CN112299541A CN202011150653.XA CN202011150653A CN112299541A CN 112299541 A CN112299541 A CN 112299541A CN 202011150653 A CN202011150653 A CN 202011150653A CN 112299541 A CN112299541 A CN 112299541A
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- Prior art keywords
- sulfate heptahydrate
- ferrous sulfate
- dried
- stirrer
- dryer
- 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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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 67
- 239000011574 phosphorus Substances 0.000 title claims abstract description 67
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 51
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 239000010865 sewage Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 31
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 24
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 24
- 239000010881 fly ash Substances 0.000 claims abstract description 24
- XBDUTCVQJHJTQZ-UHFFFAOYSA-L iron(2+) sulfate monohydrate Chemical compound O.[Fe+2].[O-]S([O-])(=O)=O XBDUTCVQJHJTQZ-UHFFFAOYSA-L 0.000 claims abstract description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000011343 solid material Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000813 microbial effect Effects 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 2
- 229910019142 PO4 Inorganic materials 0.000 description 8
- 239000010452 phosphate Substances 0.000 description 8
- 238000004062 sedimentation Methods 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 5
- 235000003891 ferrous sulphate Nutrition 0.000 description 3
- 239000011790 ferrous sulphate Substances 0.000 description 3
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002289 effect on microbe Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- 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
Abstract
The invention discloses a high-efficiency composite phosphorus removing agent suitable for a capacity-expansion sewage treatment system and a preparation method thereof, wherein the high-efficiency composite phosphorus removing agent comprises the following components: the water-soluble iron sulfate heptahydrate is prepared by mixing and processing ferrous sulfate heptahydrate, aluminum sulfate, polyaluminium chloride and fly ash, wherein the ferrous sulfate heptahydrate is dried by a dryer and is used as hydrous ferrous from a titanium dioxide factory, and the hydrous ferrous sulfate heptahydrate is dried by the dryer at 60 ℃ for 2 hours to form light white ferrous sulfate heptahydrate; the raw materials for preparing the high-efficiency composite phosphorus removing agent comprise the following components in percentage by mass: 60% of dried ferrous sulfate heptahydrate, 20% of aluminum sulfate, 10% of polyaluminium chloride and 10% of fly ash. The invention has the advantages of stable dephosphorization effect, low cost and little influence on a microbial system.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a high-efficiency composite phosphorus removal agent suitable for a dilatation sewage treatment system and a preparation method thereof.
Background
The over-high phosphorus content of the water body in nature can cause the mass propagation of algae, and the over-high phosphorus is an important reason for the eutrophication of the water body. With the continuous improvement of the living standard of people, the phosphorus content of the domestic sewage is increased. How to effectively reduce the phosphorus content of the discharged water of the sewage treatment plant has very important significance for environmental protection.
National policies put more and more attention on external drainage and gradually improve the discharge standard. At present, the first-class A efflux standard is basically executed nationwide, and the total phosphorus content is less than 0.5 mg/l. The sewage treatment plants which are built for a long time are difficult to treat to reach the standard only by biological phosphorus removal. In recent years, urban population is increased rapidly due to urbanization of population, and most sewage treatment plants run in an overload mode. Some sewage treatment plants are limited by limited occupied area and are difficult to achieve optimal biochemical effect although expansion and transformation are carried out. Therefore, phosphorus removal agents are usually added to help reduce the total phosphorus in the water body in the sewage treatment process.
The common phosphorus removing agents in the market at present are aluminum salt and ferric salt, the main phosphorus removing principle is that the phosphorus removing agents are combined with phosphate radicals in sewage to generate insoluble phosphate, and the purpose of reducing and removing total phosphorus in the wastewater is achieved through flocculation and precipitation. In general, a single salt of aluminum or iron is added to the biochemical terminal secondary sedimentation tank only for reducing the risk because the PH is low and the effect on microorganisms is exerted. The retention time of the wastewater in the secondary sedimentation tank is short, the mobility is poor, the phosphorus removing agent cannot be fully mixed with the wastewater, and the risk of the rising of the effluent chromaticity is influenced.
Disclosure of Invention
The invention aims to provide an efficient composite phosphorus removal agent suitable for a dilatation sewage treatment system and a preparation method thereof, which have the advantages of stable phosphorus removal effect, low cost and small influence on a microbial system, solve the problem that a single aluminum salt and a single ferric salt have influence on microorganisms due to low PH and can only be added into a secondary sedimentation tank at the tail end of a biochemical reactor for reducing risks. The retention time of the wastewater in the secondary sedimentation tank is short, the mobility is poor, the phosphorus removing agent can not be fully mixed with the wastewater, and the problem of influencing the risk of the rising of the effluent chromaticity is solved.
In order to achieve the purpose, the invention provides the following technical scheme: the efficient composite phosphorus removing agent suitable for the capacity-expansion sewage treatment system comprises a dryer and consists of the following components: ferrous sulfate heptahydrate, aluminum sulfate, polyaluminium chloride and fly ash are prepared and processed;
wherein, the ferrous sulfate heptahydrate is dried by a dryer for use.
As a further scheme of the invention, the raw materials for preparing the high-efficiency composite phosphorus removing agent comprise the following components in percentage by mass: 60% of dried ferrous sulfate heptahydrate, 20% of aluminum sulfate, 10% of polyaluminium chloride and 10% of fly ash.
As a further scheme of the invention, the ferrous sulfate heptahydrate is hydrated ferrous from a titanium dioxide factory, and is dried by a dryer at 60 ℃ for 2 hours to form light white ferrous sulfate heptahydrate.
The efficient composite phosphorus removing agent suitable for the capacity-expansion sewage treatment system comprises a stirrer, and the preparation steps of the efficient composite phosphorus removing agent are as follows:
s1, feeding the water-containing ferrous iron from the titanium dioxide factory into a dryer through a conveying mechanism of a conveyor, adjusting the temperature of the dryer to 60 ℃, drying the water-containing ferrous iron in the dryer for 2 hours, forming light white ferrous sulfate heptahydrate by the dried water-containing ferrous iron, and grinding the light white ferrous sulfate heptahydrate into powder;
s2, according to the formula proportion of the high-efficiency composite phosphorus removing agent: 60% of dried ferrous sulfate heptahydrate, 20% of aluminum sulfate, 10% of polyaluminium chloride and 10% of fly ash, selecting raw materials according to requirements, and respectively placing different raw materials in different containing devices for separation;
s3, adding 60% of dried ferrous sulfate heptahydrate powder raw material into a stirrer, adding water in an amount corresponding to the formula proportion, adjusting the rotating speed of the stirrer to 800 revolutions, and stirring the dried ferrous sulfate heptahydrate powder raw material at a constant speed for 5 minutes to mix the dried ferrous sulfate heptahydrate powder raw material with water;
s4, adding 20% of aluminum sulfate into the stirred solution obtained in the step S3, keeping the stirrer at 800 revolutions, and stirring the liquid added with the aluminum sulfate for 10 minutes at a constant speed by the stirrer so as to fully mix the aluminum sulfate;
s5, adding 10% of polyaluminium chloride raw material into the stirred solution obtained in the step S4, adjusting the rotating speed of a stirrer to 1000 revolutions, and stirring the liquid added with the polyaluminium chloride raw material for 10 minutes at a constant speed by the stirrer to fully mix the polyaluminium chloride raw material;
s6, finally adding 10% of fly ash into the stirred solution obtained in the step S5, adjusting the rotating speed of the stirrer to 800 revolutions, and stirring the liquid added with the fly ash for 10 minutes at a constant speed by the stirrer to fully mix the fly ash;
s7, adding all the raw materials, stirring, filling the stirred solution into a container, and sending the container into a dryer for drying to take out the moisture in the solution; and feeding the dried solid material into a pulverizer, grinding the solid phosphorus removal agent into powdery phosphorus removal agent, and packaging and storing the powdery phosphorus removal agent according to packaging indexes.
Compared with the prior art, the invention has the following beneficial effects: the phosphorus removing agent comprises the following components in percentage by mass: 60% of dried ferrous sulfate heptahydrate, 20% of aluminum sulfate, 10% of polyaluminium chloride and 10% of fly ash.
The ferrous sulfate heptahydrate is ferrous sulfate containing water from a titanium dioxide factory, and is dried for 2 hours at the temperature of 60 ℃ to form light white ferrous sulfate heptahydrate; as the main component of the phosphorus removing agent, the waste utilization greatly reduces the production cost of the phosphorus removing agent; ferrous sulfate heptahydrate mainly acts to bind phosphate to form insoluble phosphate.
The aluminum sulfate mainly reduces the drainage chroma and plays a role in decoloring; the hardening of ferrous sulfate is successfully blocked in the finished product of the phosphorus removing agent, and the dissolution of the solid phosphorus removing agent is accelerated.
The polyaluminium chloride accelerates the polymerization precipitation of insoluble phosphate, so that suspended matters and colloids in water are coagulated; effectively removing the total phosphorus in the suspended substances.
The fly ash of the power plant contains a large amount of aluminum oxide, so that the total phosphorus sedimentation in suspended matters can be accelerated, and heavy condensation nuclei are provided for flocculate; the higher the floc weight is, the faster the sedimentation speed is, and the lower the total phosphorus content in the water body is.
The high-efficiency composite phosphorus removing agent produced according to the formula proportion of 60 percent of ferrous sulfate heptahydrate, 20 percent of aluminum sulfate, 10 percent of polyaluminium chloride and 10 percent of fly ash has the advantages of stable phosphorus removing effect, low cost and little influence on a microbial system.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown herein, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The embodiment provided by the invention comprises the following steps: an efficient composite phosphorus removal agent suitable for a dilatation sewage treatment system comprises the following components: the high-efficiency composite phosphorus removing agent is prepared by blending and processing ferrous sulfate heptahydrate, aluminum sulfate, polyaluminium chloride and fly ash, and the raw materials for preparing the high-efficiency composite phosphorus removing agent comprise the following components in percentage by mass: 60% of dried ferrous sulfate heptahydrate, 20% of aluminum sulfate, 10% of polyaluminium chloride and 10% of fly ash, wherein the ferrous sulfate heptahydrate is dried by a dryer for use.
Example 2
The embodiment provided by the invention comprises the following steps: a high-efficiency composite phosphorus removal agent suitable for a capacity-expansion sewage treatment system is characterized in that ferrous sulfate heptahydrate is hydrated ferrous from a titanium dioxide factory, and is dried at 60 ℃ for 2 hours to form light white ferrous sulfate heptahydrate; as the main component of the phosphorus removing agent, the waste utilization greatly reduces the production cost of the phosphorus removing agent; ferrous sulfate heptahydrate mainly acts to bind phosphate to form insoluble phosphate.
The aluminum sulfate mainly reduces the drainage chroma and plays a role in decoloring; the hardening of ferrous sulfate is successfully blocked in the finished product of the phosphorus removing agent, and the dissolution of the solid phosphorus removing agent is accelerated.
The polyaluminium chloride accelerates the polymerization precipitation of insoluble phosphate, so that suspended matters and colloids in water are coagulated; effectively removing the total phosphorus in the suspended substances.
The fly ash of the power plant contains a large amount of aluminum oxide, so that the total phosphorus sedimentation in suspended matters can be accelerated, and heavy condensation nuclei are provided for flocculate; the higher the floc weight is, the faster the sedimentation speed is, and the lower the total phosphorus content in the water body is.
Example 3
The embodiment provided by the invention comprises the following steps: an efficient composite phosphorus removal agent suitable for a dilatation sewage treatment system and a preparation method thereof are disclosed, wherein the efficient composite phosphorus removal agent is prepared by the following steps:
s1, feeding the water-containing ferrous iron from the titanium dioxide factory into a dryer through a conveying mechanism of a conveyor, adjusting the temperature of the dryer to 60 ℃, drying the water-containing ferrous iron in the dryer for 2 hours, forming light white ferrous sulfate heptahydrate by the dried water-containing ferrous iron, and grinding the light white ferrous sulfate heptahydrate into powder;
s2, according to the formula proportion of the high-efficiency composite phosphorus removing agent: 60% of dried ferrous sulfate heptahydrate, 20% of aluminum sulfate, 10% of polyaluminium chloride and 10% of fly ash, selecting raw materials according to requirements, and respectively placing different raw materials in different containing devices for separation;
s3, adding 60% of dried ferrous sulfate heptahydrate powder raw material into a stirrer, adding water in an amount corresponding to the formula proportion, adjusting the rotating speed of the stirrer to 800 revolutions, and stirring the dried ferrous sulfate heptahydrate powder raw material at a constant speed for 5 minutes to mix the dried ferrous sulfate heptahydrate powder raw material with water;
s4, adding 20% of aluminum sulfate into the stirred solution obtained in the step S3, keeping the stirrer at 800 revolutions, and stirring the liquid added with the aluminum sulfate for 10 minutes at a constant speed by the stirrer so as to fully mix the aluminum sulfate;
s5, adding 10% of polyaluminium chloride raw material into the stirred solution obtained in the step S4, adjusting the rotating speed of a stirrer to 1000 revolutions, and stirring the liquid added with the polyaluminium chloride raw material for 10 minutes at a constant speed by the stirrer to fully mix the polyaluminium chloride raw material;
s6, finally adding 10% of fly ash into the stirred solution obtained in the step S5, adjusting the rotating speed of the stirrer to 800 revolutions, and stirring the liquid added with the fly ash for 10 minutes at a constant speed by the stirrer to fully mix the fly ash;
s7, adding all the raw materials, stirring, filling the stirred solution into a container, and sending the container into a dryer for drying to take out the moisture in the solution; and feeding the dried solid material into a pulverizer, grinding the solid phosphorus removal agent into powdery phosphorus removal agent, and packaging and storing the powdery phosphorus removal agent according to packaging indexes.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. The utility model provides a be fit for dilatation sewage treatment system high-efficient compound dephosphorization agent, includes the drying-machine, its characterized in that: the high-efficiency composite phosphorus removing agent comprises the following components: ferrous sulfate heptahydrate, aluminum sulfate, polyaluminium chloride and fly ash are prepared and processed;
wherein, the ferrous sulfate heptahydrate is dried by a dryer for use.
2. The efficient composite phosphorus removal agent suitable for the capacity-expansion sewage treatment system of claim 1, wherein: the raw materials for preparing the high-efficiency composite phosphorus removing agent comprise the following components in percentage by mass: 60% of dried ferrous sulfate heptahydrate, 20% of aluminum sulfate, 10% of polyaluminium chloride and 10% of fly ash.
3. The efficient composite phosphorus removal agent suitable for the capacity-expansion sewage treatment system of claim 1, wherein: the ferrous sulfate heptahydrate is hydrous ferrous from titanium dioxide factory, and is dried by a dryer at 60 ℃ for 2 hours to form light white ferrous sulfate heptahydrate.
4. The efficient composite phosphorus removal agent suitable for the capacity-expansion sewage treatment system and the preparation method thereof of the claims 1 to 3 comprise a stirrer, and are characterized in that: the preparation method of the high-efficiency composite phosphorus removing agent comprises the following steps:
s1, feeding the water-containing ferrous iron from the titanium dioxide factory into a dryer through a conveying mechanism of a conveyor, adjusting the temperature of the dryer to 60 ℃, drying the water-containing ferrous iron in the dryer for 2 hours, forming light white ferrous sulfate heptahydrate by the dried water-containing ferrous iron, and grinding the light white ferrous sulfate heptahydrate into powder;
s2, according to the formula proportion of the high-efficiency composite phosphorus removing agent: 60% of dried ferrous sulfate heptahydrate, 20% of aluminum sulfate, 10% of polyaluminium chloride and 10% of fly ash, selecting raw materials according to requirements, and respectively placing different raw materials in different containing devices for separation;
s3, adding 60% of dried ferrous sulfate heptahydrate powder raw material into a stirrer, adding water in an amount corresponding to the formula proportion, adjusting the rotating speed of the stirrer to 800 revolutions, and stirring the dried ferrous sulfate heptahydrate powder raw material at a constant speed for 5 minutes to mix the dried ferrous sulfate heptahydrate powder raw material with water;
s4, adding 20% of aluminum sulfate into the stirred solution obtained in the step S3, keeping the stirrer at 800 revolutions, and stirring the liquid added with the aluminum sulfate for 10 minutes at a constant speed by the stirrer so as to fully mix the aluminum sulfate;
s5, adding 10% of polyaluminium chloride raw material into the stirred solution obtained in the step S4, adjusting the rotating speed of a stirrer to 1000 revolutions, and stirring the liquid added with the polyaluminium chloride raw material for 10 minutes at a constant speed by the stirrer to fully mix the polyaluminium chloride raw material;
s6, finally adding 10% of fly ash into the stirred solution obtained in the step S5, adjusting the rotating speed of the stirrer to 800 revolutions, and stirring the liquid added with the fly ash for 10 minutes at a constant speed by the stirrer to fully mix the fly ash;
s7, adding all the raw materials, stirring, filling the stirred solution into a container, and sending the container into a dryer for drying to take out the moisture in the solution; and feeding the dried solid material into a pulverizer, grinding the solid phosphorus removal agent into powdery phosphorus removal agent, and packaging and storing the powdery phosphorus removal agent according to packaging indexes.
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| CN202011150653.XA CN112299541A (en) | 2020-10-24 | 2020-10-24 | Efficient composite phosphorus removal agent suitable for capacity-expansion sewage treatment system and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100213405A1 (en) * | 2008-09-26 | 2010-08-26 | David Allen Wensloff | Composition and process for removal of contaminants from water and wastewater(s) |
| CN108314163A (en) * | 2018-04-20 | 2018-07-24 | 东莞市顶盛环保科技有限公司 | A kind of efficient dephosphorization agent |
| CN109293163A (en) * | 2018-11-08 | 2019-02-01 | 四川山水源环保技术有限公司 | A kind of composite dephosphorizing agent and application method |
| CN111039376A (en) * | 2019-12-31 | 2020-04-21 | 宁夏兴日晟环保科技有限公司 | Composite efficient phosphorus removal agent applied to sewage treatment field and preparation method thereof |
-
2020
- 2020-10-24 CN CN202011150653.XA patent/CN112299541A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100213405A1 (en) * | 2008-09-26 | 2010-08-26 | David Allen Wensloff | Composition and process for removal of contaminants from water and wastewater(s) |
| CN108314163A (en) * | 2018-04-20 | 2018-07-24 | 东莞市顶盛环保科技有限公司 | A kind of efficient dephosphorization agent |
| CN109293163A (en) * | 2018-11-08 | 2019-02-01 | 四川山水源环保技术有限公司 | A kind of composite dephosphorizing agent and application method |
| CN111039376A (en) * | 2019-12-31 | 2020-04-21 | 宁夏兴日晟环保科技有限公司 | Composite efficient phosphorus removal agent applied to sewage treatment field and preparation method thereof |
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| Title |
|---|
| 中国建筑学会建筑材料分会: "《建筑材料新进展及工程应用》", 30 November 2008, 中国建材工业出版社, pages: 132 - 133 * |
| 张金安: "《粉煤灰与废旧塑料的综合利用》", 30 August 2005, 国防工业出版社, pages: 14 - 15 * |
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