CN106115887A - A kind of beryllium sewage-treating agent and preparation method thereof - Google Patents
A kind of beryllium sewage-treating agent and preparation method thereof Download PDFInfo
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- CN106115887A CN106115887A CN201610630668.3A CN201610630668A CN106115887A CN 106115887 A CN106115887 A CN 106115887A CN 201610630668 A CN201610630668 A CN 201610630668A CN 106115887 A CN106115887 A CN 106115887A
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- beryllium
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- treating agent
- alkaline earth
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- 0 CCC[*+]CN(C)CCNC Chemical compound CCC[*+]CN(C)CCNC 0.000 description 3
- NBWWCIQUCAHONY-UHFFFAOYSA-N CCC(C)CCCCN Chemical compound CCC(C)CCCCN NBWWCIQUCAHONY-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a kind of beryllium sewage-treating agent and preparation method thereof, described beryllium sewage-treating agent, according to the component of weight portion be: modified-salt alkaline earth 20 30 parts, auxiliary agent 15 20 parts, triethanolamine 4 10 parts, sodium carbonate 0.5 1.0 parts.The present invention enables to the physical and chemical index of beryllium sewage-treating agent and reaches GB18918 2002 standard, and effectively reduces COD, BOD, SS and beryllium ion content；Process technique is simple, and dosage is few, and treatment effect is good, stable performance, and effluent quality is good, can significantly reduce the cost that water processes, and has good economic benefit and social benefit widely.
Description
Technical field
The present invention relates to a kind of sewage-treating agent technical field, specifically a kind of beryllium sewage-treating agent and preparation method thereof.
Background technology
Heavy metal wastewater thereby cheats internal drainage, mill tailings draining essentially from mine, and waste-rock yard drenches immersion, non-ferrous metal smelting
Refinery's dedusting draining, Non-ferrous Metals Processing Factory's acid washing water, Electroplate Factory's plating piece washings, steel plant's pickling draining, and electrolysis, agriculture
The industry such as medicine, medicine, paint, pigment.At present, process beryllium sewage-treating agent pollution problem and have the various sides such as physics, chemistry, biology
Method, but to there is treatment effect the best more for physical method, handling rate instability problem；Biological method processing cost is too high, uncomfortable
Preferably promote the use of；More employing chemical methodes process sewage, but existing sewage-treating agent, and there is secondary in its agent formulations
Pollution problem, also can have a certain impact to environment.
Summary of the invention
It is an object of the invention to provide a kind of beryllium sewage-treating agent and preparation method thereof, to solve in above-mentioned background technology
The problem proposed.
For achieving the above object, the present invention provides following technical scheme:
A kind of beryllium sewage-treating agent, according to the primary raw material of weight portion be: modified-salt alkaline earth 20-30 part, auxiliary agent 15-20
Part, triethanolamine 4-10 part, sodium carbonate 0.5-1.0 part；The preparation method of described modified-salt alkaline earth is: be dried by saline-alkali soil
And it is ground into the fine powder of 300 mesh, subsequently fine powder is infiltrated in polyacrylamide, transfer to reactor after infiltration 4h, and add
Hexalin and Alumen, under 0.2MPa pressure, 45-60 DEG C is reacted 1h post-drying and get final product；Described auxiliary agent includes following two kinds of auxiliary agent groups
Point: one is the adjuvant component A of chemistry formula (I), and content is the 30-50% of adjuvant component gross weight,
Its two be chemistry formula (II) adjuvant component B, content is the 50-70% of adjuvant component gross weight,
Said components sum is 100%.
As the further scheme of the present invention: according to the primary raw material of weight portion be: modified-salt alkaline earth 24-26 part, auxiliary agent
17-18 part, triethanolamine 5-9 part, sodium carbonate 0.5-1.0 part；The preparation method of described modified-salt alkaline earth is: carried out by saline-alkali soil
It is dried and is ground into the fine powder of 300 mesh, subsequently fine powder is infiltrated in polyacrylamide, after infiltration 4h, transfer to reactor, and
Adding Hexalin and Alumen, under 0.2MPa pressure, 45-60 DEG C is reacted 1h post-drying and get final product；Described auxiliary agent includes that following two kinds are helped
Agent component: one is the adjuvant component A of chemistry formula (I), and content is the 35-45% of adjuvant component gross weight,
Its two be chemistry formula (II) adjuvant component B, content is the 55-65% of adjuvant component gross weight,
Said components sum is 100%.
As the further scheme of the present invention: according to the primary raw material of weight portion be: modified-salt alkaline earth 25 parts, auxiliary agent 18
Part, triethanolamine 7 parts, sodium carbonate 0.8 part；The preparation method of described modified-salt alkaline earth is: is dried by saline-alkali soil and pulverizes
Become the fine powder of 300 mesh, subsequently fine powder is infiltrated in polyacrylamide, transfer to reactor after infiltration 4h, and add Hexalin
And Alumen, under 0.2MPa pressure, 54 DEG C are reacted 1h post-dryings and get final product；Described auxiliary agent includes following two kinds of adjuvant components: one is
The adjuvant component A of chemistry formula (I), content is the 50% of adjuvant component gross weight,
Its two be chemistry formula (II) adjuvant component B, content is the 50% of adjuvant component gross weight,
Said components sum is 100%.
As the further scheme of the present invention: the purity of described triethanolamine is chromatographically pure.
As the further scheme of the present invention: the mesh number of described sodium carbonate is 1200 mesh.
The preparation method of a kind of beryllium sewage-treating agent, concretely comprises the following steps:
(1) first, add water to modified-salt alkaline earth and obtain mixture slurry, carry out high pressure ultrasonic Treatment subsequently, at ultrasound wave
The temperature of reason is 62-75 DEG C, and the time is 18-20min, and pressure is 5-10MPa, obtains mixture；
(2) last, mixture and auxiliary agent, triethanolamine, sodium carbonate are carried out ice bath mixing stirring, speed of agitator is
600r/min, is spray-dried at a temperature of being subsequently placed at 4 DEG C, obtains beryllium sewage-treating agent.
As the further scheme of the present invention: in step (1), the temperature of ultrasonic Treatment is 69 DEG C, the time is 19min, pressure
Strong is 8MPa.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention enables to the physical and chemical index of beryllium sewage-treating agent and reaches GB18918-2002 standard, and effectively reduces
COD, BOD, SS and beryllium ion content；Process technique is simple, and dosage is few, and treatment effect is good, stable performance, effluent quality
Good, the cost that water processes can be significantly reduced, there is good economic benefit and social benefit widely.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all
Belong to the scope of protection of the invention.
Embodiment 1
A kind of beryllium sewage-treating agent, according to the primary raw material of weight portion be: modified-salt alkaline earth 20 parts, auxiliary agent 15 parts, three second
Hydramine 4 parts, sodium carbonate 0.5 part；The preparation method of described modified-salt alkaline earth is: saline-alkali soil is dried and is ground into 300 mesh
Fine powder, subsequently fine powder is infiltrated in polyacrylamide, transfers to reactor after infiltration 4h, and add Hexalin and Alumen,
Under 0.2MPa pressure, 45 DEG C are reacted 1h post-dryings and get final product；Described auxiliary agent includes following two kinds of adjuvant components: one is chemical formula
(I) adjuvant component A, content is the 30% of adjuvant component gross weight,
Its two be chemistry formula (II) adjuvant component B, content is the 70% of adjuvant component gross weight,
Said components sum is 100%；The purity of described triethanolamine is chromatographically pure；The mesh number of described sodium carbonate is 1200
Mesh.
The preparation method of a kind of beryllium sewage-treating agent, concretely comprises the following steps:
(1) first, add water to modified-salt alkaline earth and obtain mixture slurry, carry out high pressure ultrasonic Treatment subsequently, at ultrasound wave
The temperature of reason is 62 DEG C, and the time is 18min, and pressure is 5MPa, obtains mixture；
(2) last, mixture and auxiliary agent, triethanolamine, sodium carbonate are carried out ice bath mixing stirring, speed of agitator is
600r/min, is spray-dried at a temperature of being subsequently placed at 4 DEG C, obtains beryllium sewage-treating agent.
Embodiment 2
A kind of beryllium sewage-treating agent, according to the primary raw material of weight portion be: modified-salt alkaline earth 24 parts, auxiliary agent 17 parts, three second
Hydramine 5 parts, sodium carbonate 0.5 part；The preparation method of described modified-salt alkaline earth is: saline-alkali soil is dried and is ground into 300 mesh
Fine powder, subsequently fine powder is infiltrated in polyacrylamide, transfers to reactor after infiltration 4h, and add Hexalin and Alumen,
Under 0.2MPa pressure, 45 DEG C are reacted 1h post-dryings and get final product；Described auxiliary agent includes following two kinds of adjuvant components: one is chemical formula
(I) adjuvant component A, content is the 35% of adjuvant component gross weight,
Its two be chemistry formula (II) adjuvant component B, content is the 65% of adjuvant component gross weight,
Said components sum is 100%；The purity of described triethanolamine is chromatographically pure；The mesh number of described sodium carbonate is 1200
Mesh.
The preparation method of a kind of beryllium sewage-treating agent, concretely comprises the following steps:
(1) first, add water to modified-salt alkaline earth and obtain mixture slurry, carry out high pressure ultrasonic Treatment subsequently, at ultrasound wave
The temperature of reason is 62 DEG C, and the time is 18min, and pressure is 5MPa, obtains mixture；
(2) last, mixture and auxiliary agent, triethanolamine, sodium carbonate are carried out ice bath mixing stirring, speed of agitator is
600r/min, is spray-dried at a temperature of being subsequently placed at 4 DEG C, obtains beryllium sewage-treating agent.
Embodiment 3
A kind of beryllium sewage-treating agent, according to the primary raw material of weight portion be: modified-salt alkaline earth 25 parts, auxiliary agent 18 parts, three second
Hydramine 7 parts, sodium carbonate 0.8 part；The preparation method of described modified-salt alkaline earth is: saline-alkali soil is dried and is ground into 300 mesh
Fine powder, subsequently fine powder is infiltrated in polyacrylamide, transfers to reactor after infiltration 4h, and add Hexalin and Alumen,
Under 0.2MPa pressure, 54 DEG C are reacted 1h post-dryings and get final product；Described auxiliary agent includes following two kinds of adjuvant components: one is chemical formula
(I) adjuvant component A, content is the 50% of adjuvant component gross weight,
Its two be chemistry formula (II) adjuvant component B, content is the 50% of adjuvant component gross weight,
Said components sum is 100%；The purity of described triethanolamine is chromatographically pure；The mesh number of described sodium carbonate is 1200
Mesh.
The preparation method of a kind of beryllium sewage-treating agent, concretely comprises the following steps:
(1) first, add water to modified-salt alkaline earth and obtain mixture slurry, carry out high pressure ultrasonic Treatment subsequently, at ultrasound wave
The temperature of reason is 69 DEG C, and the time is 19min, and pressure is 8MPa, obtains mixture；
(2) last, mixture and auxiliary agent, triethanolamine, sodium carbonate are carried out ice bath mixing stirring, speed of agitator is
600r/min, is spray-dried at a temperature of being subsequently placed at 4 DEG C, obtains beryllium sewage-treating agent.
Embodiment 4
A kind of beryllium sewage-treating agent, according to the primary raw material of weight portion be: modified-salt alkaline earth 26 parts, auxiliary agent 18 parts, three second
Hydramine 9 parts, sodium carbonate 1.0 parts；The preparation method of described modified-salt alkaline earth is: saline-alkali soil is dried and is ground into 300 mesh
Fine powder, subsequently fine powder is infiltrated in polyacrylamide, transfers to reactor after infiltration 4h, and add Hexalin and Alumen,
Under 0.2MPa pressure, 60 DEG C are reacted 1h post-dryings and get final product；Described auxiliary agent includes following two kinds of adjuvant components: one is chemical formula
(I) adjuvant component A, content is the 45% of adjuvant component gross weight,
Its two be chemistry formula (II) adjuvant component B, content is the 55% of adjuvant component gross weight,
Said components sum is 100%；The purity of described triethanolamine is chromatographically pure；The mesh number of described sodium carbonate is 1200
Mesh.
The preparation method of a kind of beryllium sewage-treating agent, concretely comprises the following steps:
(1) first, add water to modified-salt alkaline earth and obtain mixture slurry, carry out high pressure ultrasonic Treatment subsequently, at ultrasound wave
The temperature of reason is 75 DEG C, and the time is 20min, and pressure is 10MPa, obtains mixture；
(2) last, mixture and auxiliary agent, triethanolamine, sodium carbonate are carried out ice bath mixing stirring, speed of agitator is
600r/min, is spray-dried at a temperature of being subsequently placed at 4 DEG C, obtains beryllium sewage-treating agent.
Embodiment 5
A kind of beryllium sewage-treating agent, according to the primary raw material of weight portion be: modified-salt alkaline earth 30 parts, auxiliary agent 20 parts, three second
Hydramine 10 parts, sodium carbonate 1.0 parts；The preparation method of described modified-salt alkaline earth is: saline-alkali soil is dried and is ground into 300 mesh
Fine powder, subsequently fine powder is infiltrated in polyacrylamide, transfers to reactor after infiltration 4h, and add Hexalin and Alumen,
Under 0.2MPa pressure, 60 DEG C are reacted 1h post-dryings and get final product；Described auxiliary agent includes following two kinds of adjuvant components: one is chemical formula
(I) adjuvant component A, content is the 50% of adjuvant component gross weight,
Its two be chemistry formula (II) adjuvant component B, content is the 50% of adjuvant component gross weight,
Said components sum is 100%；The purity of described triethanolamine is chromatographically pure；The mesh number of described sodium carbonate is 1200
Mesh.
The preparation method of a kind of beryllium sewage-treating agent, concretely comprises the following steps:
(1) first, add water to modified-salt alkaline earth and obtain mixture slurry, carry out high pressure ultrasonic Treatment subsequently, at ultrasound wave
The temperature of reason is 75 DEG C, and the time is 20min, and pressure is 10MPa, obtains mixture；
(2) last, mixture and auxiliary agent, triethanolamine, sodium carbonate are carried out ice bath mixing stirring, speed of agitator is
600r/min, is spray-dried at a temperature of being subsequently placed at 4 DEG C, obtains beryllium sewage-treating agent.
Comparative example 1
A kind of beryllium sewage-treating agent, according to the primary raw material of weight portion be: 25 parts of saline-alkali soil, auxiliary agent 18 parts, triethanolamine 7
Part, sodium carbonate 0.8 part；Described auxiliary agent includes following two kinds of adjuvant components: one is the adjuvant component A of chemistry formula (I), and content is
The 50% of adjuvant component gross weight,
Its two be chemistry formula (II) adjuvant component B, content is the 50% of adjuvant component gross weight,
Said components sum is 100%；The purity of described triethanolamine is chromatographically pure；The mesh number of described sodium carbonate is 1200
Mesh.
The preparation method of a kind of beryllium sewage-treating agent, concretely comprises the following steps:
(1) first, add water to saline-alkali soil and obtain mixture；
(2) last, mixture and auxiliary agent, triethanolamine, sodium carbonate are carried out ice bath mixing stirring, speed of agitator is
600r/min, is spray-dried at a temperature of being subsequently placed at 4 DEG C, obtains beryllium sewage-treating agent.
Comparative example 2
A kind of beryllium sewage-treating agent, according to the primary raw material of weight portion be: 25 parts of saline-alkali soil, triethanolamine 7 parts, sodium carbonate
0.8 part；The purity of described triethanolamine is chromatographically pure；The mesh number of described sodium carbonate is 1200 mesh.
The preparation method of a kind of beryllium sewage-treating agent, concretely comprises the following steps:
(1) first, add water to saline-alkali soil and obtain mixture；
(2) last, mixture and triethanolamine, sodium carbonate are carried out ice bath mixing stirring, speed of agitator is 600r/min,
It is spray-dried at a temperature of being subsequently placed at 4 DEG C, obtains beryllium sewage-treating agent.
Comparative example 3
A kind of beryllium sewage-treating agent, according to the primary raw material of weight portion be: modified-salt alkaline earth 25 parts, auxiliary agent 18 parts, three second
Hydramine 7 parts, sodium carbonate 0.8 part；The preparation method of described modified-salt alkaline earth is: saline-alkali soil is dried and is ground into 300 mesh
Fine powder, subsequently fine powder is infiltrated in polyacrylamide, transfers to reactor after infiltration 4h, and add Hexalin and Alumen,
Under 0.2MPa pressure, 54 DEG C are reacted 1h post-dryings and get final product；Described auxiliary agent includes following two kinds of adjuvant components: one is chemical formula
(I) adjuvant component A, content is the 50% of adjuvant component gross weight,
Its two be chemistry formula (II) adjuvant component B, content is the 50% of adjuvant component gross weight,
Said components sum is 100%；The purity of described triethanolamine is chromatographically pure；The mesh number of described sodium carbonate is 1200
Mesh.
The preparation method of a kind of beryllium sewage-treating agent, concretely comprises the following steps:
(1) first, add water to modified-salt alkaline earth and obtain mixture；
(2) last, mixture and auxiliary agent, triethanolamine, sodium carbonate are carried out ice bath mixing stirring, speed of agitator is
600r/min, is spray-dried at a temperature of being subsequently placed at 4 DEG C, obtains beryllium sewage-treating agent.
Test experience
Weigh embodiment 1, embodiment 2, embodiment 3, embodiment 4, embodiment 5 and comparative example 1, comparative example 2, contrast respectively
The each 0.2kg of example 3 joins in the beryllium sewage-treating agent of 20kg, and temperature control, at 25 DEG C, is stirred continuously 0.5h, respectively with COD, BOD,
SS, beryllium ion content test the effect of the beryllium sewage-treating agent of the present invention, test result table 1 as evaluation criterion.
As can be seen here, the beryllium sewage-treating agent of the present invention, there are the most notable treatment effect, the present invention compared with matched group
The physical and chemical index enabling to beryllium sewage-treating agent reaches GB18918-2002 standard, and effectively reduces COD, BOD, SS and beryllium
Ion concentration；Process technique is simple, and dosage is few, and treatment effect is good, and stable performance, effluent quality is good, can be effectively reduced
The cost that water processes, has good economic benefit and social benefit widely.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (7)
1. a beryllium sewage-treating agent, it is characterised in that be according to the primary raw material of weight portion: modified-salt alkaline earth 20-30 part, help
Agent 15-20 part, triethanolamine 4-10 part, sodium carbonate 0.5-1.0 part；The preparation method of described modified-salt alkaline earth is: by saline-alkali soil
It is dried and is ground into the fine powder of 300 mesh, subsequently fine powder is infiltrated in polyacrylamide, after infiltration 4h, transfer to reaction
Still, and add Hexalin and Alumen, under 0.2MPa pressure, 45-60 DEG C is reacted 1h post-drying and get final product；Described auxiliary agent includes following two
Plant adjuvant component: one is the adjuvant component A of chemistry formula (I), and content is the 30-50% of adjuvant component gross weight,
Its two be chemistry formula (II) adjuvant component B, content is the 50-70% of adjuvant component gross weight,
Said components sum is 100%.
Beryllium sewage-treating agent the most according to claim 1, it is characterised in that be according to the primary raw material of weight portion: modified
Saline-alkali soil 24-26 part, auxiliary agent 17-18 part, triethanolamine 5-9 part, sodium carbonate 0.5-1.0 part；The preparation of described modified-salt alkaline earth
Method is: saline-alkali soil is dried and is ground into the fine powder of 300 mesh, is infiltrated in polyacrylamide by fine powder subsequently, infiltration
Transferring to reactor after 4h, and add Hexalin and Alumen, under 0.2MPa pressure, 45-60 DEG C is reacted 1h post-drying and get final product；Described
Auxiliary agent includes following two kinds of adjuvant components: one is the adjuvant component A of chemistry formula (I), and content is the 35-of adjuvant component gross weight
45%,
Its two be chemistry formula (II) adjuvant component B, content is the 55-65% of adjuvant component gross weight,
Said components sum is 100%.
Beryllium sewage-treating agent the most according to claim 1 and 2, it is characterised in that according to the primary raw material of weight portion be: change
Property 25 parts of saline-alkali soil, auxiliary agent 18 parts, triethanolamine 7 parts, sodium carbonate 0.8 part；The preparation method of described modified-salt alkaline earth is: by salt
Alkaline earth is dried and is ground into the fine powder of 300 mesh, is infiltrated in polyacrylamide by fine powder subsequently, transfers to anti-after infiltration 4h
Answering still, and add Hexalin and Alumen, under 0.2MPa pressure, 54 DEG C are reacted 1h post-dryings and get final product；Described auxiliary agent includes following two
Plant adjuvant component: one is the adjuvant component A of chemistry formula (I), and content is the 50% of adjuvant component gross weight,
Its two be chemistry formula (II) adjuvant component B, content is the 50% of adjuvant component gross weight,
Said components sum is 100%.
Beryllium sewage-treating agent the most according to claim 3, it is characterised in that the purity of described triethanolamine is chromatographically pure.
Beryllium sewage-treating agent the most according to claim 4, it is characterised in that the mesh number of described sodium carbonate is 1200 mesh.
6. the preparation method of the beryllium sewage-treating agent as described in claim 1-5 is arbitrary, it is characterised in that concrete steps
For:
(1) first, add water to modified-salt alkaline earth and obtain mixture slurry, carry out high pressure ultrasonic Treatment subsequently, ultrasonic Treatment
Temperature is 62-75 DEG C, and the time is 18-20min, and pressure is 5-10MPa, obtains mixture；
(2) last, mixture and auxiliary agent, triethanolamine, sodium carbonate are carried out ice bath mixing stirring, speed of agitator is 600r/
Min, is spray-dried at a temperature of being subsequently placed at 4 DEG C, obtains beryllium sewage-treating agent.
The preparation method of beryllium sewage-treating agent the most according to claim 6, it is characterised in that in step (1) at ultrasound wave
The temperature of reason is 69 DEG C, and the time is 19min, and pressure is 8MPa.
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| CN102145964A (en) * | 2011-03-31 | 2011-08-10 | 北京大学 | Method for treating high-ammonia-nitrogen beryllium-containing waste water |
| CN103466833A (en) * | 2013-09-10 | 2013-12-25 | 西北稀有金属材料研究院 | Treatment method of beryllium-containing sewage |
| CN104961211A (en) * | 2015-06-24 | 2015-10-07 | 王培琰 | Waste water treating agent |
| CN105293665A (en) * | 2015-11-26 | 2016-02-03 | 马慧 | Chemical industry sewage strengthening treatment coagulant, preparation method and uses thereof |
-
2016
- 2016-08-03 CN CN201610630668.3A patent/CN106115887A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102145964A (en) * | 2011-03-31 | 2011-08-10 | 北京大学 | Method for treating high-ammonia-nitrogen beryllium-containing waste water |
| CN103466833A (en) * | 2013-09-10 | 2013-12-25 | 西北稀有金属材料研究院 | Treatment method of beryllium-containing sewage |
| CN104961211A (en) * | 2015-06-24 | 2015-10-07 | 王培琰 | Waste water treating agent |
| CN105293665A (en) * | 2015-11-26 | 2016-02-03 | 马慧 | Chemical industry sewage strengthening treatment coagulant, preparation method and uses thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161116 |
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| RJ01 | Rejection of invention patent application after publication |