CN112723502A - Phosphorus and algae removal agent and preparation method and application thereof - Google Patents
Phosphorus and algae removal agent and preparation method and application thereof Download PDFInfo
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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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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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
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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
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
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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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
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Abstract
The application relates to the technical field of water treatment, and particularly discloses a phosphorus and algae removing agent, a preparation method and an application thereof, wherein the phosphorus and algae removing agent is prepared from the following raw materials in parts by weight: 2-10 parts of poly dimethyl diallyl ammonium chloride, 30-90 parts of a coagulant and 20-110 parts of one or more of gypsum and clay minerals, wherein the coagulant is one or more of polymeric ferric sulfate, polymeric aluminum chloride or polymeric aluminum ferric chloride; the application also discloses a preparation method of the phosphorus and algae removing agent, which is prepared by mixing according to the proportion, and also discloses application of the phosphorus and algae removing agent in phosphorus and algae removing treatment of water bodies.
Description
Technical Field
The application relates to the technical field of water treatment, in particular to a phosphorus and algae removing agent and a preparation method and application thereof.
Background
With the increasing development and utilization activities of human beings on environmental resources, a large amount of domestic sewage and industrial wastewater containing nitrogen and phosphorus nutrient substances are discharged into rivers and lakes, the load of the nutrient substances in the water body is increased, and the direct result is water eutrophication. The main hazards of eutrophic water are: firstly, the direct consequence of eutrophication is that algae plants grow rapidly and the oxygen content of water drops rapidly, so that aquatic animals such as fishes and shellfishes die due to oxygen deficiency, and the reproduction of the organisms is restrained; eutrophication deteriorates the water quality of the water source, and increases the difficulty and cost of water treatment; and thirdly, the eutrophication deteriorates the sense of the water body and reduces the aesthetic value of the water body.
The prevention and control of the algal bloom is the urgent priority of the current eutrophication control, researches and develops a sewage treatment technology for removing phosphorus and algae, and has important ecological environmental significance and economic and social benefits for reducing the influence caused by the algal bloom. This is because although the nutritive salts of nitrogen and phosphorus are the main compounds causing eutrophication of water, phosphorus is the most critical element, because although nitrogen and phosphorus are the important nutrients for organisms, algae and other organisms are more sensitive to phosphorus. When the phosphorus concentration of the water body is low, the reproductive capacity of the water body is greatly inhibited even if the nitrogen concentration can meet the requirements of organisms such as algae. The nitrogen deficiency of the water body can be supplemented by a plurality of nitrogen-fixing microorganisms, and the phosphorus is provided from the outside, so that obviously, the control of the phosphorus content in the water body for effectively controlling the eutrophication of the water body has more practical significance than the control of the nitrogen content. Therefore, the phosphorus removal algicide with good phosphorus removal and algae removal effects has important significance for the treatment of the phosphorus removal and algae removal sewage.
Disclosure of Invention
In order to control algal bloom and achieve the purposes of removing phosphorus and algae, the application provides a phosphorus and algae removing agent and a preparation method and application thereof.
In a first aspect, the application provides a phosphorus and algae removing agent, which adopts the following technical scheme:
a phosphorus and algae removal agent is prepared from the following raw materials in parts by weight:
2-10 parts of poly dimethyl diallyl ammonium chloride, 30-90 parts of a coagulant and 20-110 parts of one or more of gypsum and clay minerals, wherein the coagulant is one or more of polymeric ferric sulfate, polymeric aluminum chloride or polymeric aluminum ferric chloride.
Through adopting above-mentioned technical scheme, polydimethyldiallyl ammonium chloride is as cation bactericidal polymer in this application, can play the effect of getting rid of the alga, antibacterial action still has simultaneously, get rid of pathogenic microorganisms such as escherichia coli in the water, to organisms such as fish in the water and oil slick animal nonhazardous effect, simultaneously, polydimethyldiallyl ammonium chloride can also play the effect of flocculation, coagulant such as polyferric sulfate or polyaluminium chloride is chooseed for use to the coagulant, not only can play the effect of flocculation, can also play the effect of dephosphorization, clay mineral plays the effect of flocculation algae removal, gypsum not only plays the effect of deposit, can also play the effect of dephosphorization.
In the application, coagulant such as poly dimethyl diallyl ammonium chloride and polyferric sulfate and clay minerals are compounded for use, and the coagulant and the clay minerals have synergistic effect, so that the phosphorus and algae removing effect is good, the generated floc is large, large alum floc is formed, and the sludge can be rapidly precipitated under the action of a precipitator, so that the purposes of phosphorus and algae removal are achieved.
Preferably, the clay mineral is one or more of bentonite, diatomite and sepiolite, and more preferably bentonite or diatomite or a mixture of the bentonite and the diatomite.
By adopting the technical scheme, the effect of removing phosphorus and algae is good when the bentonite or the diatomite is selected as the clay mineral, and the source is easy to obtain.
Preferably, the coagulant is polyferric sulfate or polyaluminum ferric chloride, and more preferably polyaluminum ferric chloride.
By adopting the technical scheme, when the polyferric sulfate or polyaluminum ferric chloride is selected as the coagulant, the effect of removing phosphorus and algae is good, the stability is higher, especially when the polyaluminum ferric chloride is selected, the polyaluminum ferric chloride (PAFC) coagulates various characteristics of inorganic high molecular polyaluminum ferric chloride and the polyaluminum ferric chloride, the coagulant has special coagulation performance, the water treatment effect is good, the dosage is small, the excellent water treatment effect can be achieved, and the phosphorus and algae removal effect is better after the coagulant is compounded with the poly dimethyl diallyl ammonium chloride.
Preferably, the phosphorus and algae removal agent is prepared from the following raw materials in parts by weight:
2-8 parts of poly dimethyl diallyl ammonium chloride, 40-65 parts of polyferric sulfate or polyaluminum ferric chloride, 10-25 parts of bentonite, 5-20 parts of diatomite and 15-30 parts of gypsum.
Preferably, the phosphorus and algae removal agent is prepared from the following raw materials in parts by weight:
5 parts of poly dimethyl diallyl ammonium chloride, 50 parts of polyferric sulfate or polyaluminum ferric chloride, 15 parts of bentonite, 10 parts of kieselguhr and 25 parts of gypsum.
By adopting the technical scheme, the phosphorus and algae removing agent with the proportion has better phosphorus and algae removing effects.
In a second aspect, the application provides a preparation method of a phosphorus and algae removal agent, which adopts the following technical scheme:
a preparation method of a phosphorus and algae removing agent comprises the following steps:
mixing the raw materials according to the proportion to obtain the phosphorus and algae removing agent.
In a third aspect, the application provides an application of a phosphorus and algae removal agent, which adopts the following technical scheme:
an application of a phosphorus and algae removing agent in phosphorus and algae removing treatment of a water body.
Further, when the phosphorus and algae removal agent is used for removing phosphorus and algae in water, the addition amount of the phosphorus and algae removal agent is 0.5-2 g/L.
By adopting the technical scheme, when the phosphorus and algae removing agent is added according to the addition amount, the phosphorus and algae removing effect is good.
Preferably, when the phosphorus and algae removing agent is used for removing phosphorus and algae in a water body, the phosphorus and algae removing agent and water are mixed according to the mass-to-volume ratio of 1:10 and then added into the water body.
In summary, the present application has the following beneficial effects:
1. in the application, coagulant such as poly dimethyl diallyl ammonium chloride and polyferric sulfate and clay minerals are compounded for use, the coagulant and the clay minerals have synergistic effect, the phosphorus and algae removal effect is good, the generated floc is large to form large alum floc, and the large alum floc can be rapidly precipitated under the action of a precipitator, so that the purposes of phosphorus and algae removal are achieved;
2. the poly dimethyl diallyl ammonium chloride is used as a cationic bactericidal polymer, not only can play roles in removing algae and precipitating, but also can play a role in inhibiting bacteria, remove pathogenic microorganisms such as escherichia coli and the like in a water body, and has no toxic or harmful effect on organisms such as fishes, oil-slick animals and the like in the water body;
3. when the polyaluminum ferric chloride is selected as the coagulant, various characteristics of inorganic high-molecular polyaluminum chloride and polyferric chloride are coagulated, so that the coagulant has special coagulation performance, good water treatment effect and small using amount, and the phosphorus and algae removal effect is better after the coagulant is compounded with the poly dimethyl diallyl ammonium chloride.
Detailed Description
The present application is further described in detail with reference to the following examples, which are specifically illustrated by the following: the following examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer, and the starting materials used in the following examples are available from ordinary commercial sources unless otherwise specified.
Aiming at the problem of algal bloom sewage treatment which needs to be solved urgently at present, the current methods which are commonly used at home and abroad mainly comprise the following methods: 1) the traditional algaecide such as copper sulfate is used, and the method has certain ecological risks and directly threatens the survival of fishes and oil slick animals; 2) the method of changing water, the sewage is led away, in addition, a new water source is led, and how long the water is not used after changing water, the pollution of the background pollution source can be caused again; 3) an ozone algae removal method: ozone has strong oxidizability and can kill algae quickly, but ozone is unstable and easy to decompose, has short retention time in water, and an ozone generating device is large and complex and has high energy consumption, so that the ozone method for removing algae can only act on a small range of water bodies and is not suitable for large range of water bodies.
Therefore, the above methods have certain limitations, and it is necessary to provide a phosphorus and algae removing agent with better and more stable phosphorus and algae removing effects, so that through a large number of screening tests by the inventors, the following schemes of the present application are obtained:
the application discloses a phosphorus and algae removing agent which is prepared from the following raw materials in parts by weight:
10 parts of poly dimethyl diallyl ammonium chloride (PDM), 30-90 parts of coagulant and 20-110 parts of one or more of gypsum and clay minerals;
wherein the coagulant is selected from polymeric ferric sulfate, polymeric aluminum chloride or polymeric chloridizationOne or more of aluminum and iron, more preferably polyaluminum ferric chloride (PAFC) for coagulating inorganic polymeric aluminum chloride and polymeric ferric chloride, and iron salt and aluminum salt water treatment agent can only generate AL (OH) during hydrolysis2 ＋And the like, and the PAFC can generate not only the hydroxyl ions but also AL in the hydrolysis process4(OH)4 +8、Fe4(OH)4 +The polyhydroxy cations neutralize colloidal particle charges in water and compress an electric double layer, and meanwhile, a series of reactions such as hydroxyl bridging, crosslinking, surface adsorption and the like occur, and the reaction is condensed into large alum under corresponding collision, so that the precipitation is rapid, and a good water treatment effect can be achieved by adding a small amount of the alum;
the clay mineral is one or more selected from bentonite, diatomite, sepiolite and attapulgite, and the bentonite in the following examples is calcium bentonite.
The following description is given in conjunction with specific examples.
Example 1
A preparation method of a phosphorus and algae removing agent comprises the following steps:
5g of poly dimethyl diallyl ammonium chloride (PDM), 50g of polymeric ferric sulfate and 25g of bentonite are mixed to prepare the phosphorus and algae removing agent.
Example 2
A preparation method of a phosphorus and algae removal agent is carried out according to the method in the example 1, except that the phosphorus and algae removal agent is obtained by mixing the raw materials according to the mixture ratio in the following table 1.
TABLE 1
| Item | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 7 | Example 8 |
| PDM/g | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Polymeric ferric sulfate/g | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| Polyaluminum ferric chloride/g | — | — | — | — | — | — | — | — |
| Bentonite/g | 25 | — | — | — | 10 | 10 | 15 | 20 |
| Diatomaceous earth/g | — | — | 25 | 10 | — | 10 | 10 | 10 |
| Gypsum per gram | — | 25 | — | 25 | 25 | 25 | 25 | 25 |
Continuing with Table 1:
| item | Example 9 | Example 10 | Example 11 | Example 12 | Example 13 | Example 14 | Example 15 | Example 16 |
| PDM/g | 5 | 5 | 5 | 5 | 5 | 2 | 8 | 10 |
| Polymeric ferric sulfate/g | — | — | — | — | — | — | — | — |
| Polyaluminum ferric chloride/g | 50 | 30 | 90 | 40 | 65 | 50 | 50 | 50 |
| Bentonite/g | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Diatomaceous earth/g | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Gypsum per gram | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Example 17
A preparation method of a phosphorus and algae removing agent comprises the following steps:
2g of poly dimethyl diallyl ammonium chloride (PDM), 40g of polyaluminum ferric chloride, 10g of bentonite, 5g of diatomite and 15g of gypsum are mixed to prepare the phosphorus and algae removing agent.
Example 18
A preparation method of a phosphorus and algae removing agent comprises the following steps:
8g of poly dimethyl diallyl ammonium chloride (PDM), 65 g of polyaluminum ferric chloride, 25g of bentonite, 20g of diatomite and 30g of gypsum are mixed to prepare the phosphorus and algae removing agent.
Example 19
A preparation method of a phosphorus and algae removing agent comprises the following steps:
2g of poly dimethyl diallyl ammonium chloride (PDM), 30g of polyaluminum ferric chloride and 20g of bentonite are used for preparing the phosphorus and algae removing agent.
Example 20
A preparation method of a phosphorus and algae removing agent comprises the following steps:
10g of poly dimethyl diallyl ammonium chloride (PDM), 90 g of polyaluminum ferric chloride, 25g of bentonite, 40g of diatomite and 45g of gypsum are used to prepare the phosphorus and algae removing agent.
Comparative example
Comparative example 1
A preparation method of a phosphorus and algae removing agent comprises the following steps:
50g of polyaluminum ferric chloride, 15g of bentonite, 10g of diatomite and 25g of gypsum are used to prepare the phosphorus and algae removing agent.
Comparative example 2
A preparation method of a phosphorus and algae removing agent comprises the following steps:
5g of poly dimethyl diallyl ammonium chloride (PDM) and 50g of polyaluminum ferric chloride are mixed to prepare the phosphorus and algae removing agent.
Comparative example 3
A preparation method of a phosphorus and algae removing agent comprises the following steps:
1g of poly dimethyl diallyl ammonium chloride (PDM), 50g of polyaluminum ferric chloride, 15g of bentonite, 10g of diatomite and 25g of gypsum are used to prepare the phosphorus and algae removing agent.
Comparative example 4
A preparation method of a phosphorus and algae removing agent comprises the following steps:
12g of poly dimethyl diallyl ammonium chloride (PDM), 50g of polyaluminum ferric chloride, 15g of bentonite, 10g of diatomite and 25g of gypsum are used to prepare the phosphorus and algae removing agent.
Comparative example 5
A preparation method of a phosphorus and algae removing agent comprises the following steps:
5g of poly dimethyl diallyl ammonium chloride (PDM), 95g of polyaluminum ferric chloride, 15g of bentonite, 10g of diatomite and 25g of gypsum are used to prepare the phosphorus and algae removing agent.
Performance detection
The phosphorus and algae removal agents prepared in the above examples and comparative examples were tested for algae removal rate and phosphorus removal rate, and the test results are shown in table 2 below, and the test method was: adding 100ml of water containing algae, adding 0.05g of the phosphorus and algae removal agent prepared in the examples and the comparative examples, stirring, standing for 30min, measuring the absorbance of the algae in the water by using a spectrophotometer, measuring the absorption wavelength to be 646nm, using deionized water as a blank control sample, and setting a cuvette to be 20mm, thereby obtaining the algae removal rate; and measuring the concentration of phosphorus in the supernatant by using an inductively coupled plasma emission spectrometer, thereby obtaining the phosphorus removal rate.
Table 2:
| item | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 7 | Example 8 |
| Percent algae removal | 68.11 | 72.58 | 70.67 | 73.12 | 70.45 | 74.18 | 75.30 | 74.23 |
| De-phosphorization rate/%) | 80.37 | 86.26 | 82.47 | 89.53 | 88.14 | 92.66 | 93.17 | 91.81 |
| Item | Example 9 | Example 10 | Example 11 | Example 12 | Example 13 | Example 14 | Example 15 | Example 16 |
| Percent algae removal | 82.31 | 75.07 | 71.48 | 78.47 | 76.74 | 66.78 | 82.91 | 81.75 |
| De-phosphorization rate/%) | 99.98 | 91.47 | 86.78 | 95.47 | 94.95 | 89.75 | 95.87 | 94.63 |
| Item | Example 17 | Example 18 | Example 19 | Example 20 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 |
| Percent algae removal | 65.79 | 79.65 | 68.97 | 81.45 | 57.91 | 66.78 | 59.78 | 83.91 |
| De-phosphorization rate/%) | 81.78 | 92.65 | 88.64 | 95.97 | 95.47 | 75.74 | 79.87 | 95.47 |
As can be seen from table 2 above, referring to the detection results of examples 1-3, it can be seen that when the materials and the addition amounts of the PDM and the coagulant are the same, the phosphorus removal rate and the algae removal rate are better when bentonite, diatomite and gypsum are added, and when bentonite and diatomite are used, the phosphorus removal rate is lower, the algae removal rate is slightly reduced, and the removal effects of the two are close to each other; referring to the results of the tests of examples 4 and 5, it can be seen that the phosphorus removal rate and the algae removal rate are increased when gypsum is selected to be mixed with bentonite or diatomite, and are better when gypsum is selected to be mixed with diatomite; referring to the test results of examples 6-8, it can be seen that the phosphorus and algae removal effects are further enhanced when the diatomaceous earth, bentonite and gypsum are compounded, and the phosphorus removal rate is better when 10g of diatomaceous earth is added and compounded with gypsum, probably because the bentonite has extremely strong expansibility, the precipitation effect during phosphorus and algae removal is reduced.
Referring to the detection results of the embodiment 7 and the embodiment 9, it can be seen that the phosphorus and algae removal effect of the coagulant is better when polyaluminium ferric chloride is used as the coagulant in the system than when polyferric sulfate is used as the coagulant; referring to the detection results of examples 10 to 13, it can be seen that the dephosphorization and dephosphorization effect of the dephosphorization and dephosphorization agent obtained when the addition amount of polyaluminum ferric chloride is 50g is better when the sewage is treated; referring to the results of the tests of example 9 and examples 14 to 16, it can be seen that the algae removal rate increases and then is substantially constant as the addition amount of poly (dimethyldiallylammonium chloride) (PDM) increases. Referring to the detection results of comparative examples 1, 3 and 4, it can be seen that when the raw material of the phosphorus and algae removing agent is not added with poly dimethyl diallyl ammonium chloride (PDM), the algae removing rate is greatly reduced, when the addition amount of the PDM is too small, the algae removing rate is lower, and when the addition amount is large, the algae removing rate is basically unchanged, and the cost is increased;
referring to the test results of comparative example 2, when no gypsum or clay mineral or the like having a precipitating effect is added, both the phosphorus removal and algae removal effects are reduced, and in addition, algae and flocculation sediment float on the water surface, so that the purpose of removing algae is not achieved; in comparative example 5, the phosphorus removal rate was 56.78% and the algae removal rate was 79.68%, and it can be seen that when the polyaluminum ferric chloride was excessively added, not only the cost increased, but also the sedimentary material floated upward, and the phosphorus and algae removal effects decreased. Therefore, when the poly dimethyl diallyl ammonium chloride, the polyaluminum ferric chloride and the gypsum are compounded with the diatomite and the bentonite, the phosphorus and algae removal effect is good, the phosphorus removal rate reaches up to 99%, and the algae removal rate reaches over 80%.
Application example
Application example 1
The phosphorus and algae removal agent prepared in the example 9 is applied to an algae-containing water body, specifically, 100g of the phosphorus and algae removal agent prepared in the example 9 is taken, dissolved in 1L of water and then added into the algae-containing water, the addition amount of the phosphorus and algae removal agent is 1g/L, namely 1g of the phosphorus and algae removal agent is added into 1L of the algae-containing water, the mixture is stirred and then stands for 30min, the phosphorus removal rate and the phosphorus removal rate are measured, the phosphorus removal rate is 99.55%, and the algae removal rate is 85.06%. And 3d, determining the algae removal rate and the phosphorus removal rate again, wherein the phosphorus removal rate is 97.87 percent and the algae removal rate is 81.79 percent, and determining the algae removal rate and the phosphorus removal rate again after 1 month, the phosphorus removal rate is 95.87 percent and the algae removal rate is 75.18 percent.
Application example 2
The phosphorus and algae removal agent prepared in the example 9 was applied to the algae-containing water body according to the application example 1, except that the addition amount of the phosphorus and algae removal agent was 0.5g/L, and after stirring and standing for 30min, the phosphorus removal rate was 91.23% and the algae removal rate was 79.34%.
Application example 3
The phosphorus and algae removal agent prepared in the example 9 is applied to the algae-containing water body according to the application example 1, except that the addition amount of the phosphorus and algae removal agent is 2g/L, and after stirring and standing for 30min, the phosphorus removal rate is measured to be 99.34% and the algae removal rate is 84.21%.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The phosphorus and algae removing agent is characterized by being prepared from the following raw materials in parts by weight:
2-10 parts of poly dimethyl diallyl ammonium chloride, 30-90 parts of a coagulant and 20-110 parts of one or more of gypsum and clay minerals, wherein the coagulant is one or more of polymeric ferric sulfate, polymeric aluminum chloride or polymeric aluminum ferric chloride.
2. The phosphorus and algae removal agent of claim 1, wherein: the clay mineral is one or more of bentonite, diatomite and sepiolite.
3. The phosphorus and algae removal agent of claim 1, wherein: the coagulant is polyferric sulfate or polyaluminum ferric chloride.
4. The phosphorus and algae removal agent of claim 2, wherein: the phosphorus and algae removing agent is prepared from the following raw materials in parts by weight:
2-8 parts of poly dimethyl diallyl ammonium chloride, 40-65 parts of polyferric sulfate or polyaluminum ferric chloride, 10-25 parts of bentonite, 5-20 parts of diatomite and 15-30 parts of gypsum.
5. The phosphorus and algae removal agent of claim 2, wherein: the phosphorus and algae removing agent is prepared from the following raw materials in parts by weight:
5 parts of poly dimethyl diallyl ammonium chloride, 50 parts of polyferric sulfate or polyaluminum ferric chloride, 15 parts of bentonite, 10 parts of kieselguhr and 25 parts of gypsum.
6. The method of any one of claims 1-5, wherein: mixing the raw materials according to the proportion to obtain the phosphorus and algae removing agent.
7. The use of any one of claims 1 to 5, wherein: the phosphorus and algae removal agent is applied to phosphorus and algae removal treatment of water bodies.
8. The use of the phosphorus and algae removing agent as claimed in claim 7, wherein: when the phosphorus and algae removing agent is used for removing phosphorus and algae in water, the addition amount of the phosphorus and algae removing agent is 0.5-2 g/L.
9. The use of the phosphorus and algae removing agent as claimed in claim 7, wherein: when the phosphorus and algae removing agent is used for removing phosphorus and algae in water, the phosphorus and algae removing agent and water are mixed according to the mass-to-volume ratio of 1:10 and then added into the water.
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| 马翠: "膨润土和硅藻土改性复配深度除磷的试验研究", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅰ辑(月刊)》 * |
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