CN114314787A - Turbidity removal clarifying agent and preparation method and application thereof - Google Patents
Turbidity removal clarifying agent and preparation method and application thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000008395 clarifying agent Substances 0.000 title claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 93
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 52
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 33
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 33
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 29
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000292 calcium oxide Substances 0.000 claims abstract description 28
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 239000002351 wastewater Substances 0.000 claims abstract description 18
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 9
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims description 27
- 229920002401 polyacrylamide Polymers 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 11
- 239000000701 coagulant Substances 0.000 claims description 6
- 239000002367 phosphate rock Substances 0.000 claims description 2
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical group OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical class O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 2
- 239000002671 adjuvant Substances 0.000 claims 5
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims 3
- 239000005909 Kieselgur Substances 0.000 claims 2
- OKTJSMMVPCPJKN-YPZZEJLDSA-N carbon-10 atom Chemical class [10C] OKTJSMMVPCPJKN-YPZZEJLDSA-N 0.000 claims 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 23
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 23
- 239000011574 phosphorus Substances 0.000 abstract description 23
- 238000005303 weighing Methods 0.000 description 18
- 239000010865 sewage Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 13
- 239000000463 material Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 239000000920 calcium hydroxide Substances 0.000 description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000005352 clarification Methods 0.000 description 3
- 239000008394 flocculating agent Substances 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- OYPRJOBELJOOCE-IGMARMGPSA-N Calcium-40 Chemical compound [40Ca] OYPRJOBELJOOCE-IGMARMGPSA-N 0.000 description 1
- 239000004113 Sepiolite Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- -1 alum Substances 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 229960005070 ascorbic acid Drugs 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229960003563 calcium carbonate Drugs 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- OYPRJOBELJOOCE-LZFNBGRKSA-N calcium-46 Chemical compound [46Ca] OYPRJOBELJOOCE-LZFNBGRKSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Abstract
The invention provides a turbidity removal clarifying agent and a preparation method and application thereof, belonging to the technical field of wastewater treatment. The turbidity removal clarifying agent provided by the invention comprises an agent A and an agent B; the preparation raw materials of the agent A comprise 10-70% of polyaluminium chloride, 5-70% of ferric trichloride and 10-75% of polyferric sulfate, and the preparation raw materials of the agent B comprise 8-80% of calcium oxide, 1.0-42% of activated carbon, 12-92% of diatomite and 0.1-10% of an auxiliary agent. The turbidity removal clarifier provided by the invention can effectively reduce turbidity and total phosphorus content in mine wastewater, has high settling speed, and is convenient to popularize and apply.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, and particularly relates to a turbidity removal clarifying agent and a preparation method and application thereof.
Background
In the process of urbanization development, the problem of damage to the ecological environment caused by production and operation activities of people is more and more serious, the discharge amount of phosphorus-containing wastewater is increasingly increased, and part of watershed water bodies have the trend of eutrophication. In order to prevent the phenomenon, the state sets a stricter phosphorus emission standard. The chemical industry is used as a wastewater discharge household, the industry coverage is wide, the variety of the industrial household is wide, and the discharged wastewater has the characteristics of complex components, strong toxicity, large water quality and water quantity fluctuation, high pollutant concentration, difficult degradation, poor biodegradability and the like.
The chemical industry is used as a main source for discharging industrial phosphorus pollutants, and the phosphorus pollution control is also important for water eutrophication treatment. Because of the particularity of the wastewater and the relatively high investment and operation cost in the chemical industry, the research and development of efficient and economic biological nitrogen and phosphorus removal processes have become the key and focus of research in the field.
Patent CN101565223A discloses a turbidity removing clarifier, including sepiolite, alum, calcium carbonate, and ascorbic acid, which interacts with protein in sewage to generate precipitate and clear the sewage, but no specific data is described to verify the turbidity removing effect of the turbidity removing clarifier.
Patent CN103991987B discloses a process system for removing total phosphorus based on chemical method multiple spot dosing pretreatment of high concentration phosphorus-containing wastewater, mainly including sewage storage tank, adjusting sedimentation tank, first chemical reaction tank, first high efficiency clarification tank, second chemical reaction tank, second high efficiency clarification tank, buffer tank, third chemical reaction tank, third high efficiency clarification tank etc. system, make high concentration phosphorus-containing wastewater in sewage storage tank aeration homogenization, add chemical agents such as calcium salt, acid, oxidant, complexing agent etc. by chemical method in grades after preoxidation, Total Phosphorus (TP) is reduced to about 10mg/L from 2000mg/L, this processing system can realize the recovery of resource, effectively eliminate the phosphorus content in the wastewater, greatly reduce the treatment burden of municipal sewage, but the equipment that uses is many, lead to sewage treatment cost increase, and the phosphorus content in the wastewater is still very high.
Therefore, the treatment capacity of the existing various sewage treatment methods is extremely limited, and the actual requirements of timely treating industrial and domestic sewage are far from being met no matter the sewage treatment capacity or the sewage treatment effect is achieved. The existing sewage treatment methods, such as a biochemical method, an aeration oxygenation method, a filtration method and the like, not only have large investment, large occupied area and high operating cost, but also have unsatisfactory treatment capacity and treatment effect; and the simple coagulation method has the problems of poor treatment effect, high operation cost, easy secondary pollution and the like.
Therefore, if the turbidity removal clarifier which can reduce the sewage treatment cost and has low total phosphorus content after treatment can be provided, the orderly operation of the wastewater treatment work can be ensured, and the sustainable development of enterprises can be further promoted.
Disclosure of Invention
The invention mainly solves the technical problem of providing a turbidity-removing clarifier, a preparation method and application thereof, and has the advantages of low treatment cost, good turbidity-removing effect and high natural settling speed.
In order to solve the technical problems, the inventor tries to continuously carry out matching tests on the components in the flocculating agent and the coagulant aid so as to obtain the efficient turbidity removal clarifying agent capable of reducing the turbidity of the sewage and the total phosphorus content.
The inventor just begins to use polyaluminium chloride, ferric trichloride and polyferric sulfate as flocculating agents and polyacrylamide as coagulant aids, but the turbidity removal effect is poor, and the turbidity reaches 72.5NTU, and during the period, one or more of polyacrylamide, calcium oxide and activated carbon are used as the coagulant aids, but the lowest turbidity can only reach 48.6 NTU.
The invention provides a clarifying agent, which comprises an agent A and an agent B; the preparation raw materials of the agent A comprise 10-70% of polyaluminium chloride, 5-70% of ferric trichloride and 10-75% of polyferric sulfate, and the preparation raw materials of the agent B comprise 8-80% of calcium oxide, 1.0-42% of activated carbon, 12-92% of diatomite and 0.1-10% of an auxiliary agent.
Furthermore, the preparation raw materials of the agent A comprise 12-63% of polyaluminium chloride, 11-60% of ferric trichloride and 15-68% of polyferric sulfate, and the preparation raw materials of the agent B comprise 8.6-77% of calcium oxide, 1.6-37% of activated carbon, 17-87% of diatomite and 0.3-6% of an auxiliary agent.
Furthermore, the preparation raw materials of the agent A comprise 15% of polyaluminium chloride, 35% of ferric trichloride and 50% of polyferric sulfate, and the preparation raw materials of the agent B comprise 10% of calcium oxide, 20% of activated carbon, 66% of diatomite and 4% of an auxiliary agent.
Or the preparation raw materials of the agent A comprise 30% of polyaluminium chloride, 15% of ferric trichloride and 55% of polyferric sulfate, and the preparation raw materials of the agent B comprise 30% of calcium oxide, 10% of activated carbon, 59% of diatomite and 1% of an auxiliary agent.
Or the preparation raw materials of the agent A comprise 30% of polyaluminium chloride, 50% of ferric trichloride and 20% of polyferric sulfate, and the preparation raw materials of the agent B comprise 60% of calcium oxide, 5% of activated carbon, 34.5% of diatomite and 0.5% of an auxiliary agent.
Further, the auxiliary agent is one of activated silicic acid and polyacrylamide, and in a specific embodiment of the invention, the auxiliary agent is polyacrylamide.
Further, the agent a: the mass ratio of the agent B is 25-250: 1.
The invention also provides a preparation method of the turbidity removal clarifier, which comprises the following steps:
taking polyaluminium chloride, ferric trichloride and polyferric sulfate according to a proportion, uniformly mixing and stirring at the stirring speed of 50-300 r/min for 5-30 min to obtain an agent A;
and uniformly mixing and stirring the calcium oxide, the activated carbon, the diatomite and the coagulant aid in proportion at the stirring speed of 1500-3000 r/min for 10-25 min to obtain the agent B.
The invention also provides an application of the turbidity removal clarifier or the turbidity removal clarifier prepared by the preparation method in wastewater treatment.
Further, the wastewater is phosphorite well wastewater;
adding 45-150 g/m of turbidity removal clarifying agent into the wastewater3(ii) a The adding sequence of the agent A and the agent B is that the agent A is added firstly and then the agent B is added.
The invention has the beneficial effects that:
the turbidity removal clarifier can effectively reduce turbidity and total phosphorus content in the phosphorus mine wastewater, and has high settling speed; the turbidity removal clarifier has the advantages of wide raw material source, low treatment cost, good treatment effect, high efficiency, energy conservation, environmental protection and convenient popularization and application.
Detailed Description
The technical solutions of the present invention are described clearly and completely below, and it is obvious that the described embodiments are some, not all embodiments of the present invention. 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.
Example 1
The agent A is prepared from 15% of polyaluminium chloride, 35% of ferric trichloride and 50% of polyferric sulfate;
the agent B comprises 10 percent of calcium oxide, 20 percent of active carbon, 66 percent of diatomite and 4 percent of polyacrylamide.
(1) Weighing polyaluminium chloride, ferric trichloride and polyferric sulfate in proportion, adding into a reactor, and stirring at a stirring paddle rotation speed of 120r/min for 10min to obtain the agent A.
(2) And weighing calcium oxide, activated carbon, diatomite and polyacrylamide according to a proportion, adding the weighed materials into a mixer for mixing, wherein the mixing speed is 2400r/min, and the mixing time is 15min, so as to obtain the B agent.
Example 2
The agent A is 30 percent of polyaluminium chloride, 15 percent of ferric trichloride and 55 percent of polyferric sulfate;
the agent B comprises 30% of calcium oxide, 10% of activated carbon, 59% of diatomite and 1% of polyacrylamide.
(1) Weighing polyaluminium chloride, ferric trichloride and polyferric sulfate in proportion, adding into a reactor, and stirring at a stirring paddle rotation speed of 120r/min for 10min to obtain the agent A.
(2) And weighing calcium oxide, activated carbon, diatomite and polyacrylamide according to a proportion, adding the weighed materials into a mixer for mixing, wherein the mixing speed is 2400r/min, and the mixing time is 15min, so as to obtain the B agent.
Example 3
The agent A is 30 percent of polyaluminium chloride, 50 percent of ferric trichloride and 20 percent of polyferric sulfate;
the agent B comprises 60% of calcium oxide, 5% of activated carbon, 34.5% of diatomite and 0.5% of polyacrylamide.
(1) Weighing polyaluminium chloride, ferric trichloride and polyferric sulfate in proportion, adding into a reactor, and stirring at a stirring paddle rotation speed of 120r/min for 10min to obtain the agent A.
(2) And weighing calcium oxide, activated carbon, diatomite and polyacrylamide according to a proportion, adding the weighed materials into a mixer for mixing, wherein the mixing speed is 2400r/min, and the mixing time is 15min, so as to obtain the B agent.
Comparative example 1
Detecting the influence of the adding sequence between the agent A and the agent B on the sewage treatment effect in the embodiment 3, wherein the mass of the agent A is 25-250 times that of the agent B (any endpoint value and middle value in the range can be selected), and the adding sequence is 1m345-150 g of turbidity removal clarifier (any endpoint value and middle value in the range can be selected) is added into the mine wastewater, and the specific adding mode is shown in table 1.
And when the reagent is added, ensuring that the corresponding dosage of the agent A and the agent B in different adding sequences of each group is the same, adding the former reagent, stirring for 10-30 s, adding the other reagent, and continuously stirring for 15 min.
TABLE 1
| Order of addition | A first and B second | B first and A second | A. B simultaneous addition | A. B is added after being mixed |
| Turbidity NTU | 21.3 | 82.3 | 73.4 | 1974.1 |
It can be seen that the effect of removing turbidity is good after A is firstly added, the effect of simultaneously adding B, A and A, B is not as good as that of adding A and B, because the agent A is a flocculating agent and the agent B is a coagulant aid, the agent B can only effectively play a role of coagulation aid when the agent A is flocculated in wastewater, and the agent B can not effectively coagulate when the agent B is added firstly or added simultaneously with the agent A and reacts with impurities in water. A. The addition of the agent B after mixing has almost no effect because the components react after the agent A and the agent B are mixed, the properties of the agents are changed, and the flocculation function is not realized.
Comparative example 2
Weighing 15% of polyaluminium chloride, 35% of ferric trichloride and 50% of polyferric sulfate according to the proportion, adding the weighed materials into a reactor, stirring and uniformly mixing to obtain the turbidity removal clarifier.
Comparative example 3
The agent A is 30 percent of polyaluminium chloride, 50 percent of ferric trichloride and 20 percent of polyferric sulfate; the agent B is 100 percent of polyacrylamide.
(1) Weighing polyaluminium chloride, ferric trichloride and polyferric sulfate in proportion, adding into a reactor, and stirring at a stirring paddle rotation speed of 120r/min for 10min to obtain the agent A.
(2) Weighing polyacrylamide to obtain the agent B.
Comparative example 4
The agent A is 30 percent of polyaluminium chloride, 50 percent of ferric trichloride and 20 percent of polyferric sulfate; the agent B comprises 50% of polyacrylamide and 50% of calcium oxide.
(1) Weighing polyaluminium chloride, ferric trichloride and polyferric sulfate in proportion, adding into a reactor, and stirring at a stirring paddle rotation speed of 120r/min for 10min to obtain the agent A.
(2) And weighing calcium oxide and polyacrylamide according to a proportion, adding the weighed calcium oxide and polyacrylamide into a mixer for mixing, wherein the mixing speed is 2400r/min, and the mixing time is 15min, so as to obtain the B agent.
Comparative example 5
The agent A is 30 percent of polyaluminium chloride, 50 percent of ferric trichloride and 20 percent of polyferric sulfate; the agent B comprises 33.3 percent of polyacrylamide, 33.3 percent of calcium oxide and 34 percent of activated carbon.
(1) Weighing polyaluminium chloride, ferric trichloride and polyferric sulfate in proportion, adding into a reactor, and stirring at a stirring paddle rotation speed of 120r/min for 10min to obtain the agent A.
(2) And weighing calcium oxide, activated carbon and polyacrylamide according to a proportion, adding the weighed materials into a mixer for mixing, wherein the mixing speed is 2400r/min, and the mixing time is 15min, so as to obtain the B agent.
Comparative example 6
The agent A is 30 percent of polyaluminium chloride, 50 percent of ferric trichloride and 20 percent of polyferric sulfate; the agent B comprises 11 percent of polyacrylamide, 11 percent of calcium oxide, 12 percent of active carbon and 66 percent of diatomite.
(1) Weighing polyaluminium chloride, ferric trichloride and polyferric sulfate in proportion, adding into a reactor, and stirring at a stirring paddle rotation speed of 120r/min for 10min to obtain the agent A.
(2) And weighing calcium oxide, activated carbon, diatomite and polyacrylamide according to a proportion, adding the weighed materials into a mixer for mixing, wherein the mixing speed is 2400r/min, and the mixing time is 15min, so as to obtain the B agent.
Comparative example 7
Weighing 25% of ferric trichloride, 20% of polyaluminium chloride, 5% of polyacrylamide, 10% of calcium hydroxide and 40% of active carbon according to the proportion, and uniformly mixing to prepare the turbidity removal clarifier.
Comparative example 8
Weighing 25% of ferric trichloride, 15% of polyaluminium chloride, 7% of polyacrylamide, 7% of calcium hydroxide and 46% of active carbon according to the proportion, and uniformly mixing to prepare the turbidity removal clarifier.
Comparative example 9
Weighing 30% of ferric trichloride, 10% of polyaluminium chloride, 5% of polyacrylamide, 5% of calcium hydroxide and 50% of activated carbon according to the proportion, and uniformly mixing to prepare the turbidity removal clarifier.
The turbidity range of the sewage used by the invention is 1000-2000 NTU, and the total phosphorus content of the liquid after the suspended matters are filtered out is about 9 mg/L. The results of comparing the turbidity, the total phosphorus content and the settling rate of the sewage treated by the turbidity removing clarifier in the examples 1 to 3 and the comparative examples 2 to 9 (the adding sequence is A and B), are shown in Table 2.
TABLE 2
Compared with examples 1-3, the agent B is absent in comparative example 2, the turbidity is higher than 140NTU, and the settling speed is relatively slow, about 30 minutes. In comparative examples 3-5, one or more of calcium oxide, activated carbon and polyacrylamide are selected as the B agent, the total phosphorus content is more than 0.50mg/L, the components in comparative example 6 are the same as those in the examples, but the dosage of the A agent and the B agent are different, so that the turbidity and the total phosphorus content are high, in comparative examples 7-9, ferric trichloride, polyaluminium chloride, polyacrylamide, calcium hydroxide and activated carbon are selected and mixed as a clarifying agent, the turbidity is higher than 70NTU, the total phosphorus content is higher than 0.35mg/L, and the effect is not ideal. Therefore, only by using the components and the dosage in the embodiments 1 to 3 of the invention, the turbidity and the total phosphorus content in the sewage can be effectively reduced, the turbidity is lower than 24NTU, the total phosphorus content is about 0.20mg/L, the sedimentation speed is high, and the sedimentation time is about 15 minutes.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A turbidity-removing clarifying agent is characterized by comprising an agent A and an agent B; the preparation raw materials of the agent A comprise 10-70% of polyaluminium chloride, 5-70% of ferric trichloride and 10-75% of polyferric sulfate, and the preparation raw materials of the agent B comprise 8-80% of calcium oxide, 1.0-42% of activated carbon, 12-92% of diatomite and 0.1-10% of an auxiliary agent.
2. The clarifying agent as claimed in claim 1, wherein the raw materials for preparing agent A include polyaluminium chloride 12-63%, ferric trichloride 11-60%, and polyferric sulfate 15-68%, and the raw materials for preparing agent B include calcium oxide 8.6-77%, activated carbon 1.6-37%, diatomite 17-87%, and adjuvant 0.3-6%.
3. The clarifying agent as set forth in claim 1, wherein the raw materials for preparing agent A include polyaluminium chloride 15%, ferric chloride 35%, and polyferric sulfate 50%, and the raw materials for preparing agent B include calcium oxide 10%, activated carbon 20%, diatomaceous earth 66%, and adjuvant 4%.
4. The clarifying agent as set forth in claim 1, wherein the raw materials for preparing agent A include polyaluminum chloride 30%, ferric chloride 15%, and polyferric sulfate 55%, and the raw materials for preparing agent B include calcium oxide 30%, activated carbon 10%, diatomaceous earth 59%, and adjuvant 1%.
5. The clarifying agent as set forth in claim 1, wherein said agent A is prepared from polyaluminium chloride 30%, ferric chloride 50%, and polyferric sulfate 20%, and said agent B is prepared from calcium oxide 60%, activated carbon 5%, diatomite 34.5%, and adjuvant 0.5%.
6. A clarifying agent according to any one of claims 1 to 5, wherein said adjuvant is one of an activated silicic acid and a polyacrylamide, and further a polyacrylamide.
7. The turbidity-removing clarifier according to any one of claims 1 to 5, wherein the ratio of the agent A: the mass ratio of the agent B is 25-250: 1.
8. The method for preparing the turbidity-removing clarifier of any one of claims 1-7, which is characterized by comprising the following steps:
taking polyaluminium chloride, ferric trichloride and polyferric sulfate according to a proportion, uniformly mixing and stirring at the stirring speed of 50-300 r/min for 5-30 min to obtain an agent A;
and uniformly mixing and stirring the calcium oxide, the activated carbon, the diatomite and the coagulant aid in proportion at the stirring speed of 1500-3000 r/min for 10-25 min to obtain the agent B.
9. Use of the turbidity-removing clarifier of any one of claims 1-7 or the turbidity-removing clarifier prepared by the method of claim 8 in wastewater treatment.
10. The use of claim 9, wherein the wastewater is phosphorite well wastewater;
adding 45-150 g/m of turbidity removal clarifying agent into the wastewater3(ii) a The adding sequence of the agent A and the agent B is that the agent A is added firstly and then the agent B is added.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993169A (en) * | 2009-08-18 | 2011-03-30 | 宝山钢铁股份有限公司 | Treatment method of sintering flue gas desulphurization wastewater |
| CN102139974A (en) * | 2011-02-21 | 2011-08-03 | 李开明 | Treatment method of phosphorus-containing waste water |
| CN105540797A (en) * | 2016-01-22 | 2016-05-04 | 浙江正洁环境科技有限公司 | Efficient water-treatment composite flocculant |
| AU2017350146A1 (en) * | 2016-10-27 | 2019-05-02 | Unilever Plc | Purification composition for clarifying soiled water for obtaining water suitable for use in laundry |
| CN111592069A (en) * | 2020-05-28 | 2020-08-28 | 广西夏阳环保科技有限公司 | Modified diatomite-nano calcium hydroxide composite sewage treatment agent |
| CN113060807A (en) * | 2021-03-17 | 2021-07-02 | 浙江卓锦环保科技股份有限公司 | Chemical phosphorus removal agent and preparation method thereof |
-
2021
- 2021-12-31 CN CN202111664392.8A patent/CN114314787A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993169A (en) * | 2009-08-18 | 2011-03-30 | 宝山钢铁股份有限公司 | Treatment method of sintering flue gas desulphurization wastewater |
| CN102139974A (en) * | 2011-02-21 | 2011-08-03 | 李开明 | Treatment method of phosphorus-containing waste water |
| CN105540797A (en) * | 2016-01-22 | 2016-05-04 | 浙江正洁环境科技有限公司 | Efficient water-treatment composite flocculant |
| AU2017350146A1 (en) * | 2016-10-27 | 2019-05-02 | Unilever Plc | Purification composition for clarifying soiled water for obtaining water suitable for use in laundry |
| CN111592069A (en) * | 2020-05-28 | 2020-08-28 | 广西夏阳环保科技有限公司 | Modified diatomite-nano calcium hydroxide composite sewage treatment agent |
| CN113060807A (en) * | 2021-03-17 | 2021-07-02 | 浙江卓锦环保科技股份有限公司 | Chemical phosphorus removal agent and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 田呈瑞等: "《软饮料工艺学》", 31 October 2005, 中国计量出版社 * |
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