CN111410281A - Double-component water treatment agent and application method thereof - Google Patents
Double-component water treatment agent and application method thereof Download PDFInfo
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- CN111410281A CN111410281A CN202010252407.9A CN202010252407A CN111410281A CN 111410281 A CN111410281 A CN 111410281A CN 202010252407 A CN202010252407 A CN 202010252407A CN 111410281 A CN111410281 A CN 111410281A
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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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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- 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
- C02F1/56—Macromolecular 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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Abstract
The invention discloses a two-component water treatment agent and a using method thereof, wherein the two-component water treatment agent consists of a reagent A and a reagent B, wherein the reagent A comprises the following components in parts by weight: 72-79 parts of polyaluminum chloride, 17-22 parts of calcium chloride and 0.5-1 part of ferrous acetate, wherein the reagent B comprises: 35-45 parts of polyacrylamide, 25-35 parts of sodium chloride, 7-13 parts of sodium hydroxide and 15-20 parts of sodium silicate. The water treatment agent can effectively flocculate and purify hardware workpiece cleaning wastewater, and greatly reduces the content of various metal ions and solution solid suspended matters contained in the wastewater. In addition, the use method of the double-component water treatment agent is simple and effective, and the effect is excellent.
Description
Technical Field
The invention relates to the field of chemical industry, in particular to a two-component water treatment agent and a using method thereof.
Background
The cleaning of hardware workpieces is to clean the metal surface by physical and/or chemical methods, such as operations of dust removal, decontamination, renovation, polishing and the like, and is widely applied in industry, but because the hardware workpieces contain various metal elements and attached dirt has various sources, the cleaning requirements are different, and the operation methods and the processes are different, so that the cleaning wastewater contains pollutants such as various metal ions and granular solid suspended matters, and the like, and if the pollutants are not treated before being discharged, the environment is seriously damaged.
In order to protect the environment and reduce pollution, a water treatment agent can be added into the washing wastewater to remove various metal ions and solid suspended matters. The main representatives of water treatment agents are flocculants which produce a large number of groups with positive (negative) electrical properties in water, which can be brought into proximity with particles or granules of pollutants with opposite electrical properties, reduce their potential, cause them to agglomerate in an unstable state, form settleable or filterable flocs, and separate them by physical or chemical means.
The flocculation process is indispensable and important in the water treatment process, and determines the operation condition of the subsequent treatment process, the quality of finally discharged effluent and the cost, so the flocculation process is an important research and development field in the water treatment engineering. Among these, the effect of the flocculation process depends to a large extent on the properties of the water treatment agent, and therefore, the water treatment agent is the core of research on water treatment technology.
At present, the water treatment agent still has great room for improvement in removing metal ions and solid suspended matters in wastewater.
Disclosure of Invention
[ problem ] to
Aiming at the defects in the prior art, the invention aims to provide a two-component water treatment agent which can effectively flocculate and purify hardware workpiece cleaning wastewater and greatly reduce the content of various metal ions and solutions (SS) contained in the wastewater.
Another object of the present invention is to provide a method for using the above-mentioned two-component water treatment agent, which is simple and effective and has excellent effects.
[ solution ]
In order to achieve the above object, according to one embodiment of the present invention, there is provided a two-component water treatment agent consisting of a reagent a and a reagent B, wherein,
the reagent A comprises: 72-79 parts of polyaluminum chloride, 17-22 parts of calcium chloride, 0.5-1 part of ferrous acetate, and
the reagent B comprises: 35-45 parts of polyacrylamide, 25-35 parts of sodium chloride, 7-13 parts of sodium hydroxide and 15-20 parts of sodium silicate.
In the treatment process of hardware workpiece cleaning wastewater, the reagent A in the two-component water treatment agent is firstly added into the wastewater from which relatively large solid impurities are removed in a simple precipitation process to break emulsification, change the surface potential of dispersed solid suspended matters and break the electrical balance of metal ions, so that oil stains in the wastewater are resolved, the solid suspended matters are gradually gathered, coulomb rejection among the metal ions is reduced, and the oil stains, the solid suspended matters and the metal ions are mixed together to form a large amount of aggregates. Then adding the reagent B in the two-component water treatment agent according to the invention into the wastewater, and stirring to accelerate the reaction, so that the aggregation body which is primarily aggregated in the wastewater and is covered and netted with a large amount of solid suspended matters, metal ions and the like is further fused and grown, and the residual pollutants in the wastewater are further fully adsorbed and wrapped in the aggregation body in the period, thereby generating a large amount of colloidal feather-shaped flocculates, and then the colloidal feather-shaped flocculates can be separated by precipitation, centrifugation or other physical methods, so that the content of various metal ions, solution solid suspended matters and other pollutants in the wastewater can be greatly reduced.
Further, in the two-component water treatment agent according to the present invention, the weight ratio of the agent a to the agent B may be 1:10 to 10:1, preferably 1:3 to 3:1, more preferably 1: 1. When the dosage of the reagent A is too large and the dosage of the reagent B is too small, the solid suspended matters and the aggregates of metal ions formed by adding the reagent A into the wastewater are difficult to further form larger flocculates, the smaller and dispersed flocculates are not beneficial to the separation of the flocculates from water, and the pollutants remained in the water are difficult to further adsorb and wrap, so that the final water treatment effect is influenced; and when the dosage of reagent A is too little and the dosage of reagent B is too big, it is not enough to the preliminary convergence of the suspended solid and the metal ion in the waste water, even add reagent B afterwards and also be difficult to fully adsorb the suspended solid and the metal ion that leave over in earlier stage for the final effect of water treatment is not ideal enough.
In the reagent A of the present invention, polyaluminum chloride is used as a main component. Polyaluminum chloride (PAC) is a water-soluble inorganic high molecular polymer, is a yellow or light yellow, dark brown and dark gray resin-like solid, and can generate physicochemical processes such as charge neutralization, adsorption bridging, net trapping, rolling sweeping and the like in wastewater through the bridging action of hydroxide ions and the aggregation action of polyvalent anions to aggregate solid suspended matters and metal ions. In the present invention, when the content of polyaluminum chloride in the agent a is less than 72 parts by weight, it will be difficult to sufficiently exert the effect of aggregating solid suspensions and metal ions of polyaluminum chloride; when the content of the polyaluminum chloride in the agent a is more than 79 parts by weight, the content of other components is too small to exert an auxiliary effect, and the application effect of the agent a is rather lowered.
The reagent A also contains calcium chloride which can be matched with polyaluminium chloride, so that the ionic strength in water is increased, the precipitation and aggregation of non-polar substances are promoted, the charge neutralization is promoted, and the aggregation of metal ions is accelerated. In the present invention, when the content of polyaluminum chloride in the agent a is less than 17 parts by weight, it is not sufficient to effectively increase the ionic strength in water; on the other hand, when the content of the polyaluminum chloride in the agent A is more than 22 parts by weight, an excessive amount of calcium ions remain in the water, adversely affecting the effect of the final water treatment.
In addition, the reagent A also comprises ferrous acetate, which can obviously improve the effect of aggregating solid suspended matters and metal ions of the polyaluminium chloride, and the reason is that the ferrous acetate can greatly improve the dispersibility of the polyaluminium chloride in wastewater, increase the contact area with the solid suspended matters and the metal ions, enable the generated aggregate to show a colloidal form, and greatly improve the adsorption performance of the polyaluminium chloride and the stability of the product. In the invention, when the content of ferrous acetate in the reagent A is less than 0.5 part by weight, the aim of improving the dispersibility of the polyaluminium chloride in the wastewater to increase the adsorption area is difficult to realize; when the content of the ferrous acetate in the reagent A is more than 1 part by weight, the bridging effect of hydroxide ions in the polyaluminium chloride is destroyed, and the water treatment effect is reduced.
Further, the reagent a preferably includes: 74-76 parts of polyaluminum chloride, 19-20 parts of calcium chloride and 0.7-1 part of ferrous acetate.
More preferably, said agent a preferably comprises: 75 parts of polyaluminium chloride, 20 parts of calcium chloride and 0.8 part of ferrous acetate.
At the above preferred weight parts, the agent a can more effectively exert the action of promoting the aggregation of solid suspended matter and metal ions in wastewater.
The reagent A of the present invention further comprises 0.2 to 0.5 parts by weight of aluminum subacetate, preferably 0.3 to 0.4 parts by weight, and more preferably 0.4 parts by weight. Aluminum acetate (Al (CH)3COO)(OH)2) The aggregation effect of the reagent A on pollutants, particularly solid suspended matters and metal ions, is improved on the whole, the stability of the reagent A is greatly improved, and the backward movement of the aggregated solid suspended matters and metal ions to water is effectively avoided.
In the reagent B of the present invention, polyacrylamide contains a large amount of amide groups in its structural unit, so that it has very good water solubility, and is easily hydrogen-bonded in water, and also forms a network structure by mechanical entanglement between hydrogen bonds and molecular chains, thereby capturing a large amount of aggregates produced by treatment with the reagent a in the net-like wastewater and producing a large amount of colloidal flocs. Further, the polyacrylamide is preferably anionic. In the present invention, when the content of polyacrylamide in the reagent B is less than 35 parts by weight, it is insufficient to completely separate out the above-mentioned aggregate; when the content of polyacrylamide in the agent B is more than 45 parts by weight, the polyacrylamide itself is excessively entangled, and the aggregate is prevented from entering into the molecular pores to be captured, so that it is difficult to exert the maximum effect of polyacrylamide.
The present invention also includes sodium chloride and sodium hydroxide in reagent B, and preferably, the weight ratio of sodium chloride to sodium hydroxide may be 2:1 to 3: 1. By adopting the sodium chloride and the sodium hydroxide in the content and the proportion, the reagent B can effectively adjust the degree of hydrogen bonds and mechanical entanglement among molecular chains in the polyacrylamide, so that the polyacrylamide is in a semi-dispersed state of mutual connection, and the mutual connection cannot be easily formed into floccules due to too few formed hydrogen bonds and entanglement, and cannot be easily netted by self-collapsing due to too much formed hydrogen bonds and entanglement.
The invention also comprises sodium silicate in the reagent B. Sodium silicate can be represented by the chemical formula Na2O·nSiO2Where n represents the modulus, the larger the value, the higher the Si content, the less soluble the corresponding sodium silicate in water and the greater the viscosity. In the present invention, the modulus is preferably 1, i.e., the sodium silicate is preferably Na2O·SiO2May also be represented by Na2SiO3. Sodium silicate can play the synergism to polyacrylamide, perfects and richens the network structure of its formation for the floccule volume that finally forms is great, and stability is higher, separates with the water easily, and can also further promote adsorption and the parcel of polyacrylamide to pollutants such as the remaining solid suspended solid in water, metal ion and hold in the palm, improves the effect of water treatment.
Further, the reagent B preferably includes: 38-41 parts of polyacrylamide, 27-31 parts of sodium chloride, 8-11 parts of sodium hydroxide and 17-19 parts of sodium silicate.
More preferably, said agent B preferably comprises: 39 parts of polyacrylamide, 28 parts of sodium chloride, 10 parts of sodium hydroxide and 18 parts of sodium silicate.
At the above preferred weight parts, the reagent B can effectively net the aggregates to form flocs and further remove the pollutants such as solid suspended matters and metal ions remaining in the water.
According to another embodiment of the present invention, there is provided a method of using the above two-component water treatment agent, comprising the steps of: adding the reagent A into the wastewater to be treated, stirring for 7-10 min at the speed of 50-70 rpm, then adding the reagent B, and stirring for 20-25 min at the speed of 30-50 rpm.
Further, the using amount of the two-component water treatment agent is 0.02-0.5 g/L of the wastewater to be treated.
By the use method, the effect of the two-component water treatment agent can be fully exerted, and the purpose of water treatment is fully achieved. After the floccules are removed from the treated water body by operations such as sedimentation, filtration or centrifugation, the treated water body can be sent to other treatment links to remove other pollutants and/or impurities, such as grease, fibers, algae and the like, and soluble impurities, such as surface active substances.
[ advantageous effects ]
In conclusion, the invention has the following beneficial effects:
(1) the double-component water treatment agent can effectively flocculate and purify hardware workpiece cleaning wastewater, has high flocculation and precipitation speed on pollutants, wide pH application range and excellent water purification effect, and can greatly reduce the content of various metal ions and solution solid suspended matters contained in the wastewater.
(2) The using method of the two-component water treatment agent is simple and effective to operate and excellent in purification effect.
Detailed Description
In order that those skilled in the art will more clearly understand the present invention, the following examples are given for further detailed description of the present invention, but it should be understood that the following examples are only preferred embodiments of the present invention, and the scope of the present invention as claimed should not be limited thereto.
Sources of materials
Polyaluminum chloride, the Al2O3 content is more than or equal to 29 percent, the basicity is 40.0 percent, and the polyaluminum chloride is purchased from Henan fountain water treatment limited company;
calcium chloride (CaCl)2) The content is more than or equal to 96 percent, and the product is purchased from Guangjiang environmental protection science and technology limited company in Henan;
ferrous acetate (Fe (CH)3COO)2) The purity is 99 percent, and the product is purchased from Hubeixinkang pharmaceutical chemical Co., Ltd;
aluminum acetate (Al (CH)3COO)(OH)2) Purity of 98% and purchased from Hubei Qifei pharmaceutical chemical Co Ltd;
polyacrylamide with solid content more than or equal to 90% and purchased from Henan China spring Water treatment Co., Ltd;
sodium chloride (NaCl), 99% pure, purchased from tokyo chemical reagents gmbh;
sodium hydroxide (NaOH), 90% pure, purchased from Tianjin Tonglida chemical Co., Ltd;
sodium silicate (Na)2SiO3) Purity 99% from suzhou yiheng fine chemical company limited.
< example >
Example 1
The two-component water treatment agent consists of a reagent A and a reagent B in a weight ratio of 1:1, wherein,
the reagent A comprises: 75 parts by weight of polyaluminum chloride, 20 parts by weight of calcium chloride, 0.8 part by weight of ferrous acetate, and
the reagent B comprises: 39 parts of polyacrylamide, 28 parts of sodium chloride, 10 parts of sodium hydroxide and 18 parts of sodium silicate.
Example 2
The two-component water treatment agent consists of a reagent A and a reagent B in a weight ratio of 1:1, wherein,
the reagent A comprises: 74 parts of polyaluminum chloride, 20 parts of calcium chloride, 0.7 part of ferrous acetate, and
the reagent B comprises: 41 parts of polyacrylamide, 27 parts of sodium chloride, 11 parts of sodium hydroxide and 17 parts of sodium silicate.
Example 3
The two-component water treatment agent consists of a reagent A and a reagent B in a weight ratio of 1:1, wherein,
the reagent A comprises: 76 parts of polyaluminum chloride, 19 parts of calcium chloride, 0.9 part of ferrous acetate, and
the reagent B comprises: 38 parts of polyacrylamide, 29 parts of sodium chloride, 10 parts of sodium hydroxide and 19 parts of sodium silicate.
Example 4
The two-component water treatment agent consists of a reagent A and a reagent B in a weight ratio of 1:1, wherein,
the reagent A comprises: 72 parts by weight of polyaluminum chloride, 22 parts by weight of calcium chloride, 0.5 part by weight of ferrous acetate, and
the reagent B comprises: 45 parts of polyacrylamide, 25 parts of sodium chloride, 12 parts of sodium hydroxide and 15 parts of sodium silicate.
Example 5
The two-component water treatment agent consists of a reagent A and a reagent B in a weight ratio of 1:1, wherein,
the reagent A comprises: 79 parts by weight of polyaluminum chloride, 17 parts by weight of calcium chloride, 1 part by weight of ferrous acetate, and
the reagent B comprises: 35 parts of polyacrylamide, 35 parts of sodium chloride, 13 parts of sodium hydroxide and 20 parts of sodium silicate.
Example 6
The two-component water treatment agent consists of a reagent A and a reagent B in a weight ratio of 1:1, wherein,
the reagent A comprises: 75 parts by weight of polyaluminum chloride, 20 parts by weight of calcium chloride, 0.8 part by weight of ferrous acetate, 0.4 part by weight of aluminum acetate, and
the reagent B comprises: 39 parts of polyacrylamide, 28 parts of sodium chloride, 10 parts of sodium hydroxide and 18 parts of sodium silicate.
Comparative example 1
A double-component water treatment agent comprises a reagent A and a reagent B in a weight ratio of 1:1, wherein,
the reagent A comprises: 65 parts by weight of polyaluminum chloride, 27 parts by weight of calcium chloride, 0.2 part by weight of ferrous acetate, and
the reagent B comprises: 50 parts of polyacrylamide, 18 parts of sodium chloride, 18 parts of sodium hydroxide and 10 parts of sodium silicate.
Comparative example 2
A double-component water treatment agent comprises a reagent A and a reagent B in a weight ratio of 1:1, wherein,
the reagent A comprises: 85 parts by weight of polyaluminum chloride, 12 parts by weight of calcium chloride, 1.5 parts by weight of ferrous acetate, and
the reagent B comprises: 30 parts of polyacrylamide, 40 parts of sodium chloride, 5 parts of sodium hydroxide and 25 parts of sodium silicate.
Comparative example 3
A two-component water treatment agent, which consists of a reagent A and a reagent B in a weight ratio of 15:1, wherein the compositions of the reagent A and the reagent B are the same as those of the reagent A and the reagent B in the embodiment 1.
Comparative example 4
A two-component water treatment agent, which consists of a reagent A and a reagent B in a weight ratio of 1:15, wherein the compositions of the reagent A and the reagent B are the same as those of the reagent A and the reagent B in example 1.
Test examples
The hardware workpiece cleaning wastewater was sampled and treated with the two-component water treatment agent of examples 1 to 6 and comparative examples 1 to 4, respectively, in an amount of 0.1 g/L wastewater, by adding reagent a to the wastewater to be treated and stirring at 60rpm for 10min, then adding reagent B and stirring at 40rpm for 25min, finally, allowing to stand and settle for 10min, and taking the supernatant to test the content of metal ions (μ g/L) and the content of suspended solids (mg/L), and the results are shown in table 1 below.
[ Table 1]
| Total chromium | Total cadmium | Total mercury | Total manganese | Total lead | Total copper | Total zinc | Suspended matter | |
| Waste water | 573 | 1.08 | 0.04 | 543 | 178 | 687 | 231 | 1022 |
| Example 1 | 45.4 | 0.07 | ND | 76.4 | 6.1 | 5.7 | 58.6 | 14 |
| Example 2 | 47.8 | 0.07 | ND | 77.2 | 6.4 | 5.6 | 59.1 | 15 |
| Example 3 | 48.2 | 0.06 | ND | 79.1 | 6.5 | 5.8 | 61.3 | 14 |
| Example 4 | 50.4 | 0.08 | ND | 81.2 | 6.8 | 6.0 | 63.4 | 17 |
| Example 5 | 49.8 | 0.08 | ND | 80.4 | 6.7 | 6.0 | 64.8 | 19 |
| Example 6 | 43.1 | 0.05 | ND | 65.3 | 5.8 | 4.9 | 51.2 | 12 |
| Comparative example 1 | 82.1 | 0.44 | ND | 101 | 13.2 | 24.5 | 91.4 | 54 |
| Comparative example 2 | 93.7 | 0.35 | ND | 121 | 15.7 | 19.8 | 78.5 | 77 |
| Comparative example 3 | 78.5 | 0.24 | ND | 106 | 22.5 | 29.6 | 65.3 | 61 |
| Comparative example 4 | 88.2 | 0.27 | 0.01 | 118 | 30.1 | 21.0 | 80.9 | 42 |
ND: not detected out
In the above table 1, metal ions such as total chromium, total cadmium, total manganese, total lead, total copper, and total zinc in the wastewater were detected by using HJ700-2014 "inductively coupled plasma mass spectrometry for determination of 65 elements in water quality", total mercury was detected by using HJ 694-. Referring to table 1, it can be seen that the use of the two-component water treatment agent according to examples 1 to 6 of the present invention can effectively reduce metal ions and suspended solids in wastewater, and particularly, can further improve the purification effect after adding aluminum acetate to the agent a. In contrast, it has been difficult to obtain excellent water treatment effects with the contents of the respective components of the agent a and the agent B of the two-component water treatment agents of comparative examples 1 and 2 outside the range defined in the present invention, and the ratio of the agent a and the agent B of the two-component water treatment agents of comparative examples 3 and 4 outside the range defined in the present invention also failed to achieve the pollutant removing effect of the present invention.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, 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 invention.
Claims (9)
1. A double-component water treatment agent is characterized by consisting of a reagent A and a reagent B,
the reagent A comprises: 72-79 parts of polyaluminum chloride, 17-22 parts of calcium chloride, 0.5-1 part of ferrous acetate, and
the reagent B comprises: 35-45 parts of polyacrylamide, 25-35 parts of sodium chloride, 7-13 parts of sodium hydroxide and 15-20 parts of sodium silicate.
2. The two-component water treatment agent according to claim 1, wherein the weight ratio of the agent a to the agent B is 1:10 to 10: 1.
3. The two-component water treatment agent according to claim 1, wherein the agent a comprises: 74-76 parts of polyaluminum chloride, 19-20 parts of calcium chloride and 0.7-1 part of ferrous acetate.
4. The two-component water treatment agent according to claim 3, wherein the agent A comprises: 75 parts of polyaluminium chloride, 20 parts of calcium chloride and 0.8 part of ferrous acetate.
5. The two-component water treatment agent according to claim 1, wherein the agent A further comprises 0.2 to 0.5 parts by weight of aluminum subacetate.
6. The two-component water treatment agent according to claim 1, wherein the agent B comprises: 38-41 parts of polyacrylamide, 27-31 parts of sodium chloride, 8-11 parts of sodium hydroxide and 17-19 parts of sodium silicate.
7. The two-component water treatment agent according to claim 6, wherein the agent B comprises: 39 parts of polyacrylamide, 28 parts of sodium chloride, 10 parts of sodium hydroxide and 18 parts of sodium silicate.
8. The method of using a two-component water treatment agent according to any one of claims 1 to 7, comprising the steps of: adding the reagent A into the wastewater to be treated, stirring for 7-10 min at the speed of 50-70 rpm, then adding the reagent B, and stirring for 20-25 min at the speed of 30-50 rpm.
9. The use method of claim 8, wherein the amount of the two-component water treatment agent is 0.02-0.5 g/L of the wastewater to be treated.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704570A (en) * | 2009-11-18 | 2010-05-12 | 深圳市深港产学研环保工程技术股份有限公司 | Sewage treatment flocculating agent and using method thereof |
| CN108217894A (en) * | 2017-12-13 | 2018-06-29 | 赛恩斯环保股份有限公司 | A kind of preparation method and application of efficient defluorinate ferro-aluminum complex reagent |
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- 2020-04-01 CN CN202010252407.9A patent/CN111410281B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704570A (en) * | 2009-11-18 | 2010-05-12 | 深圳市深港产学研环保工程技术股份有限公司 | Sewage treatment flocculating agent and using method thereof |
| CN108217894A (en) * | 2017-12-13 | 2018-06-29 | 赛恩斯环保股份有限公司 | A kind of preparation method and application of efficient defluorinate ferro-aluminum complex reagent |
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| Title |
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