CN106430495B - A kind of preparation method of the composite decoloration flocculant for wastewater treatment - Google Patents
A kind of preparation method of the composite decoloration flocculant for wastewater treatment Download PDFInfo
- Publication number
- CN106430495B CN106430495B CN201611123198.8A CN201611123198A CN106430495B CN 106430495 B CN106430495 B CN 106430495B CN 201611123198 A CN201611123198 A CN 201611123198A CN 106430495 B CN106430495 B CN 106430495B
- Authority
- CN
- China
- Prior art keywords
- preparation
- wastewater treatment
- added
- diethanol amine
- reaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
-
- 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
Landscapes
- 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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of preparation methods of composite decoloration flocculant for wastewater treatment, it includes that (1) makes dicyandiamide, urea and formaldehyde, pH 7~8 is adjusted under agitation, in 45 DEG C~70 DEG C reaction 1h~4h, ammonium chloride reaction 1.5h~3.5h is added, diethanol amine reaction 0.5h~1h is eventually adding；(2) polyacrylamide is dissolved in water, formalin is added under agitation, 1.5h~2h is reacted under the conditions of 45 DEG C~55 DEG C, diethanol amine the reaction was continued under the conditions of 60 DEG C~70 DEG C 1h~1.5h is added；(3) the product 1:0.5 in mass ratio~1 obtained step (1) and (2) is mixed, heating stirring to 40 DEG C~70 DEG C, react 1h~2h to get.Gained flocculant application of the invention is simple, at low cost, and all has excellent decolorization flocculation effect to all kinds of waste water, and after use, formaldehydeless residual or residues of formaldehyde are very low.
Description
Technical field
The present invention relates to technical field of waste water processing, more particularly to a kind of decolorization flocculation agent for wastewater treatment.
Background technique
As process of industrialization is constantly accelerated, water pollution problems is on the rise, and water treatment problems have caused the height of people
Pay attention to.For the sustainable use for guaranteeing water resource, solves the problems, such as water environment pollution, done a large amount of works in terms of water process both at home and abroad
Make, develops multiple water treatment technique, such as biochemical method, ion-exchange, absorption method, chemical oxidization method.With these method phases
Than flocculent precipitation feature high with its treatment effeciency, economic, easy becomes a kind of water treatment that countries in the world generally use
Technology.By flocculant it is harmless treated that water can reuse, improve the utilization rate of water, alleviate due to water resource not
Foot is difficult to industrial development bring.It is cheap, efficient, nontoxic and can with the enhancing of economic development and people's environmental consciousness
The development of complete biodegradable, the novel green flocculant for not generating secondary pollution is just becoming research in terms of world today's water process
Important topic.
It is cation superpolymer that formaldehyde dicyandiamide, which polymerize species flocculant, is used for wastewater treatment, and cost is relatively low, and it flocculates
Decolorizing effect is excellent, but the free formaldehyde contained by its own has the secondary pollution to water quality.The amide of polyacrylamide (PAM)
Base (- CONH2) can be affine with many substances, and absorption forms hydrogen bond.High molecular weight PAM forms " bridge between the particle being adsorbed
Connection ", so that several or even dozens of particle is linked together, generate floc sedimentation, accelerated particle sinks.This makes it optimal wadding
Solidifying agent.PAM flocculant is mainly used to handle various waste water, and compared with traditional inorganic flocculating agent the advantages of is: wide in variety, energy
A variety of conditions are adapted to, dosage is small, and high-efficient, the body refuse of generation is few, easy post-processing.
CN105540797A reports a kind of efficient water treatment composite flocculant, by by organic flocculant and inorganic flocculation
Agent is compound to can be improved flocculation sedimentation and decolorizing effect, and concrete scheme is by aluminium salt component, molysite component, helps solidifying component, organic
Flocculation component and activated silicic acid group are grouped as, and aluminium salt component is using aluminium polychloride, polyaluminium sulfate, poly- phosphorus aluminium chloride, polymerization
One or more kinds of any combination of alumina silicate, aluminium chloride, aluminum sulfate, usage amount is 10~40 parts in parts by weight；Iron
Salt component uses any of the one or more of bodied ferric sulfate, poly-ferric chloride, ferrous sulfate, ferric sulfate, iron chloride
Combination, usage amount is 1~30 part in parts by weight；Help solidifying component using carbide slag, magnesium hydroxide, magnesium chloride, zinc chloride one
Kind or two or more any combination, usage amount are 1~10 part in parts by weight；Organic-flocculation component using polyacrylamide,
Any groups of polydimethyl diallyl ammonium chloride, the one or more of polystyrene sodium sulfonate, dicyandiamide formaldehyde resin
It closes, usage amount is 1~10 part in parts by weight；Activated silicic acid component usage amount is 1~10 part in parts by weight.It is specific at one
Embodiment in, efficient water treatment composite flocculant are as follows: by 40 parts by weight of aluminium polychloride, 10 parts by weight of bodied ferric sulfate, electricity
5 parts by weight of rock ballast, 5 parts by weight of 1 parts by weight of polydimethyl diallyl ammonium chloride and activated silicic acid, are configured to composite flocculation agent,
And certain Pig raising wastewater is handled.Taking 100mL waste water to adjust pH is 5, adds this example flocculant 150mg, stirs and evenly mixs, sinks
It forms sediment to clarification, then is detected.Turbidity removal rate is 91.1%, and percent of decolourization 83.6%, total tp removal rate is up to 90.1%, always
Ammonia removal rate 47.8%, the removal rate of COD is up to 47.6%, flocculant residual rate 14.9%.
CN104671574A discloses a kind for the treatment of process of m-nitrobenzene sodium sulfonate production waste water, include the following steps:
(1) pre-process: the pH value for adjusting m-nitrobenzene sodium sulfonate production waste water is 1~4, and filtrate I is obtained by filtration；(2) iron-carbon micro-electrolysis
Reaction: filtrate I is passed through in the reaction tank containing iron carbon ball and catalyst, after being aerated, being stirred to react 4~8h, filtering water outlet；
(3) flocculation process: the pH value of the water outlet of regulating step (2) is 8~11, first quick 1~3min of stirring, then mix slowly 20~
60min, filtering water outlet；(4) decoloring reaction: decolorization flocculation agent being added into the water outlet of step (3), first quickly stirs 30~60s,
3min is mixed slowly again；Then aluminium polychloride is added, first quickly stirs 30~60s, then mix slowly 3min；It is eventually adding poly-
Acrylamide, first quick 30~60s of stirring, then after mixing slowly 3min, filtering water outlet；(5) activated carbon adsorption: to step (4)
Water outlet in be added active carbon, absorption water outlet；(6) be evaporated under reduced pressure: the water outlet of step (5) recycles inorganic salts through vacuum distillation, dense
Contracting liquid is back in step (1) and handles again, Condensate reuse.The patent thinks, in step (4), decolorization flocculation agent, PAC and
The addition sequence of PAM cannot overturn, and by the flocculated continuous use of distinct methods twice, make some particle suspensions and organic matter
Sedimentation it is more thorough, treatment effeciency is high, and reaction is thorough；The use of catalyst and decolorising agent, reduces reaction condition, saves energy
Source has very high practicability and application value.
CN103253775B discloses the preparation side of a kind of microbial flocculant and dicyandiamide formaldehyde resin joint decolorising agent
Method first decolourizes to dyeing waste water with dicyandiamide formaldehyde resin, then microbial flocculant is selected to carry out flocculation treatment.
Although these existing methods realize the raising of flocculating decoloring effect, application by compounding a variety of flocculants
More complicated, higher cost is operated, and is specially designed for specific waste water, general effect is bad.
Summary of the invention
It is an object of the present invention to be modified to the preparation method of the composite decoloration flocculant of wastewater treatment, and thus obtain
It obtains and applies simply, it is at low cost, and all kinds of waste water are all had with the composite decoloration flocculant of excellent decolorization flocculation effect.
Present invention technical solution used for the above purpose is as follows:
A kind of preparation method of the composite decoloration flocculant for wastewater treatment comprising steps are as follows:
(1) dicyandiamide, urea and formaldehyde are added in a kettle, adjusts pH with sodium hydrate aqueous solution under agitation
7~8, in 45 DEG C~70 DEG C reaction 1h~4h, ammonium chloride reaction 1.5h~3.5h is added, diethanol amine reaction is eventually adding
Diethanol amine modified dicyandiamine formaldehyde condensation products are obtained after 0.5h~1h；
(2) polyacrylamide is dissolved in water, formalin is added under agitation, in 45 DEG C~55 DEG C conditions
Diethanol amine is added the reaction was continued under the conditions of 60 DEG C~70 DEG C 1h~1.5h obtains diethanol amine modification in lower reaction 1.5h~2h
Polyacrylamide；
It (3) is in mass ratio that 1:0.5~1 is mixed by the product that step (1) and step (2) respectively obtain, heating stirring is extremely
40 DEG C~70 DEG C, 1h~2h is reacted, clear transparent solutions are obtained, it is cooling, obtain composite decoloration flocculant.
Further: in step (1), dicyandiamide, urea, formaldehyde, the molar ratio of ammonium chloride and diethanol amine are preferred
For 1:0.1~0.5:1.5~3:0.5~1.5:0.5~1.2.
Preferably, in step (1), the feed way of ammonium chloride is repeatedly to be added portionwise on a small quantity.
Preferably, in step (1), terminate since being added ammonium chloride to reaction, temperature is controlled at 70 DEG C~80 DEG C.
Preferably, in step (1) and (2), the feed way of diethanol amine is continuous is added dropwise.
Preferably, in step (1), (2) and (3), the mode of the stirring is mechanical stirring, stirring rate be 250rpm~
400rpm。
Preferably, in step (2), the molecular weight of polyacrylamide is 8,000,000.
Preferably, in step (2), polyacrylamide, formaldehyde, diethanol amine molar ratio be 1:0.8~1.5:1~
1.4。
Preferably, it in step (2), after formalin is added, is reacted under the conditions of 50 DEG C~55 DEG C；Diethanol amine is added
It is reacted under the conditions of 65~70 DEG C afterwards.
The invention further relates to the composite decoloration flocculants that the above method of the present invention preparation gained is used for wastewater treatment.
Compared with prior art, beneficial effects of the present invention are as follows:
1, composite decoloration flocculant product is colorless and transparent thick, and stability is high, is suitable for handling all kinds of waste water.
2, compare traditional handicraft, and the preparation of diethanol amine modified dicyandiamine formaldehyde condensation products increases polycondensation reaction time,
The strand for extending Dicyandiamine-formaldehyde condensation product, overcome Dicyandiamine-formaldehyde condensation product because self-molecules present amount is smaller and it is positive from
The limited disadvantage of sub- degree improves chemistry, physical adsorption property, percent of decolourization >=93%, CODcr removal rate >=80%.And it is anti-
Answer free state formaldehyde outside system can with the diethanol amine of addition the reaction was continued, residual formaldehyde is low.
3, composite decoloration flocculant of the present invention can be used alone, can be in flocculation process without adding inorganic flocculating agent
Biggish floc sedimentation is generated, sinking speed is fast.
4, the compound scheme based on diethanol amine modified dicyandiamine formaldehyde condensation products is significantly improving decolorization flocculation effect
While reduce costs.
5, composite decoloration flocculant obtained by the method for the present invention is added without repeatedly addition or by exact sequence, using it is simple,
It is convenient.
Specific embodiment
Illustrate technical solution of the present invention below by way of specific embodiment.The equal city of raw materials and reagents used in the present invention
Selling can obtain.
Embodiment 1
This example provides a kind of preparation method of composite decoloration flocculant, comprising:
(1) preparation of diethanol amine modified dicyandiamine formaldehyde condensation products: dicyandiamide, urea, formaldehyde, ammonium chloride and diethanol
The molar ratio of amine is 1:0.2:1.5:0.6:0.7.Dicyandiamide, urea and formaldehyde are added in a kettle, in stirring rate
To adjust pH 7~8 with sodium hydrate aqueous solution under the conditions of 250rpm, in 60 DEG C of reaction 2h, adjusts and control 75 DEG C of temperature, then
Ammonium chloride reaction 3h is repeatedly added portionwise on a small quantity, obtains two after diethanol amine reaction 0.5h is finally added in a manner of being continuously added dropwise
Ethanol amine modified dicyandiamine formaldehyde condensation products.
(2) preparation of the polyacrylamide of diethanol amine modification: the molecular weight of polyacrylamide is 8,000,000, wherein poly- third
Acrylamide, formaldehyde, diethanol amine molar ratio 1:1:1.4.Polyacrylamide is dissolved in water, in stirring rate
Formalin is added under the conditions of 300rpm, 1.5h is reacted under the conditions of 50 DEG C, diethanol amine is added and continues under the conditions of 65 DEG C
Reaction 1.5h obtains the polyacrylamide of diethanol amine modification.
(3) the product 1:0.5 in mass ratio respectively obtained step (1) and step (2) is mixed, heating stirring to 40 DEG C,
1h is reacted, clear transparent solutions are obtained, it is cooling, obtain composite decoloration flocculant.
Embodiment 2
This example provides a kind of preparation method of composite decoloration flocculant, comprising:
(1) preparation of diethanol amine modified dicyandiamine formaldehyde condensation products: dicyandiamide, urea, formaldehyde, ammonium chloride and diethanol
The molar ratio of amine is 1:0.3:1.5:0.8:1.Dicyandiamide, urea and formaldehyde are added in a kettle, is in stirring rate
PH 7~8 is adjusted with sodium hydrate aqueous solution under the conditions of 350rpm, in 65 DEG C of reaction 2.5h, adjusts and controls 75 DEG C of temperature, then
Ammonium chloride reaction 3h is repeatedly added portionwise on a small quantity, obtains diethyl after diethanol amine reaction 1h is finally added in a manner of being continuously added dropwise
Alkamine modified Dicyandiamine-formaldehyde condensation product.
(2) preparation of the polyacrylamide of diethanol amine modification: the molecular weight of polyacrylamide is 8,000,000, wherein poly- third
Acrylamide, formaldehyde, diethanol amine molar ratio 1:1.2:1.2.Polyacrylamide is dissolved in water, in stirring rate
Formalin is added under the conditions of 400rpm, 1.5h is reacted under the conditions of 50 DEG C, diethanol amine is added and continues under the conditions of 65 DEG C
Reaction 1.5h obtains the polyacrylamide of diethanol amine modification.
(3) the product 1:0.7 in mass ratio respectively obtained step (1) and step (2) is mixed, heating stirring to 50 DEG C,
1.5h is reacted, clear transparent solutions are obtained, it is cooling, obtain composite decoloration flocculant.
Comparative example 1
This example provides a kind of composite decoloration flocculant, by diethanol amine modified dicyandiamine formaldehyde condensation products and polyacrylamide
Amine is mixed according to mass ratio 1:0.7, wherein, diethanol amine modified dicyandiamine formaldehyde condensation products are identical according to embodiment 2
Preparation condition is made.
The composite decoloration flocculant of embodiment 1, embodiment 2 and comparative example 1 is respectively applied to dyeing waste water, applies entrucking
Between waste water and artificial leather manufacture waste water three classes waste water wastewater treatment test in, the main water quality indicator of three classes waste water is shown in Table respectively
1。
Table 1
Processing method are as follows: in flocculation decoloration step, composite decoloration flocculant is straight according to the ingredient proportion of every liter of water 2g
It connects and is added in waste water, 5min is first stirred with the speed of 300r/min, is then stirred with the speed of 40r/min
5min after staticly settling 45min, surveys indices.As a result referring to table 2.
Table 2
It above are only part preferred embodiment of the invention, the present invention is not limited in the content of embodiment.For ability
For technical staff in domain, can there are various change and change in the conception range of technical solution of the present invention, made
What changes and change, within that scope of the present invention.
Claims (10)
1. a kind of preparation method of the composite decoloration flocculant for wastewater treatment, it is characterised in that comprise the following steps that
(1) dicyandiamide, urea and formaldehyde are added in a kettle, under agitation with sodium hydrate aqueous solution adjust pH 7~
8, in 45 DEG C~70 DEG C reaction 1h~4h, ammonium chloride reaction 1.5h~3.5h is added, is eventually adding diethanol amine reaction 0.5h
Diethanol amine modified dicyandiamine formaldehyde condensation products are obtained after~1h；
(2) polyacrylamide is dissolved in water, formalin is added under agitation, it is anti-under the conditions of 45 DEG C~55 DEG C
It answers 1.5h~2h, diethanol amine is added the reaction was continued under the conditions of 60 DEG C~70 DEG C that 1h~1.5h obtains the poly- of diethanol amine modification
Acrylamide；
It (3) is in mass ratio that 1:0.5~1 is mixed by the product that step (1) and step (2) respectively obtain, heating stirring is to 40 DEG C
~70 DEG C, 1h~2h is reacted, clear transparent solutions are obtained, it is cooling, obtain composite decoloration flocculant.
2. the preparation method of the composite decoloration flocculant according to claim 1 for wastewater treatment, it is characterised in that: step
Suddenly in (1), dicyandiamide, urea, formaldehyde, ammonium chloride and diethanol amine molar ratio be 1:0.1~0.5:1.5~3:0.5
~1.5:0.5~1.2.
3. the preparation method of the composite decoloration flocculant according to claim 1 for wastewater treatment, it is characterised in that: step
Suddenly in (1), the feed way of ammonium chloride is repeatedly to be added portionwise on a small quantity.
4. the preparation method of the composite decoloration flocculant according to claim 1 for wastewater treatment, it is characterised in that: step
Suddenly in (1), terminate since being added ammonium chloride to reaction, temperature is controlled at 70 DEG C~80 DEG C.
5. the preparation method of the composite decoloration flocculant according to claim 1 for wastewater treatment, it is characterised in that: step
Suddenly in (1) and (2), the feed way of diethanol amine is continuous is added dropwise.
6. the preparation method of the composite decoloration flocculant according to claim 1 for wastewater treatment, it is characterised in that: step
Suddenly in (1), (2) and (3), the mode of the stirring is mechanical stirring, and stirring rate is 250rpm~400rpm.
7. the preparation method of the composite decoloration flocculant according to claim 1 for wastewater treatment, it is characterised in that: step
Suddenly in (2), the molecular weight of polyacrylamide is 8,000,000.
8. the preparation method of the composite decoloration flocculant according to claim 1 for wastewater treatment, it is characterised in that: step
Suddenly in (2), polyacrylamide, formaldehyde, diethanol amine molar ratio be 1:0.8~1.5:1~1.4.
9. the preparation method of the composite decoloration flocculant according to claim 1 for wastewater treatment, it is characterised in that: step
Suddenly it in (2), after formalin is added, is reacted under the conditions of 50 DEG C~55 DEG C；It is added after diethanol amine in 65~70 DEG C of conditions
Lower reaction.
10. a kind of composite decoloration flocculant for wastewater treatment as described in any one of claims 1 to 9 claim
Preparation method preparation gained is used for the composite decoloration flocculant of wastewater treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611123198.8A CN106430495B (en) | 2016-12-08 | 2016-12-08 | A kind of preparation method of the composite decoloration flocculant for wastewater treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611123198.8A CN106430495B (en) | 2016-12-08 | 2016-12-08 | A kind of preparation method of the composite decoloration flocculant for wastewater treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106430495A CN106430495A (en) | 2017-02-22 |
| CN106430495B true CN106430495B (en) | 2019-06-14 |
Family
ID=58217692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611123198.8A Active CN106430495B (en) | 2016-12-08 | 2016-12-08 | A kind of preparation method of the composite decoloration flocculant for wastewater treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106430495B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925242B (en) * | 2017-03-20 | 2019-07-09 | 浙江工商大学 | A kind of basic fuchsin adsorbent and its preparation method and application |
| CN107162146B (en) * | 2017-05-31 | 2019-11-29 | 无锡蓝波化学品有限公司 | A kind of synthetic method and application of the agent of organic polymer decolorization flocculation |
| CN107500472B (en) * | 2017-09-05 | 2021-05-11 | 成都锐达机电实业有限公司 | High-efficiency dephosphorization process |
| CN109205750A (en) * | 2018-11-08 | 2019-01-15 | 东江环保股份有限公司江苏分公司 | The efficient flocculating device of dyeing waste water and its application |
| CN112209480A (en) * | 2020-08-18 | 2021-01-12 | 南京江岛环境科技研究院有限公司 | Composite decolorizing flocculant for water treatment and preparation method thereof |
| CN112939177B (en) * | 2021-02-04 | 2023-07-04 | 扬州工业职业技术学院 | Environment-friendly dicyandiamide-formaldehyde-based decolorizing flocculant |
| CN113429112A (en) * | 2021-06-23 | 2021-09-24 | 宁波职业技术学院 | Novel sludge dewatering method |
| CN113667404B (en) * | 2021-09-06 | 2022-10-28 | 河北三棵树涂料有限公司 | High-viscosity water-based asphalt waterproof coating and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115239A (en) * | 2009-12-30 | 2011-07-06 | 中国中化股份有限公司 | Protein flocculant for treating printing and dyeing wastewater |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6627086B2 (en) * | 2001-03-21 | 2003-09-30 | Polymer Ventures, Inc. | Methods of producing polyarylamines and using them for detackifying paint and removing color from aqueous systems |
-
2016
- 2016-12-08 CN CN201611123198.8A patent/CN106430495B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115239A (en) * | 2009-12-30 | 2011-07-06 | 中国中化股份有限公司 | Protein flocculant for treating printing and dyeing wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106430495A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106430495B (en) | A kind of preparation method of the composite decoloration flocculant for wastewater treatment | |
| Sun et al. | Characterization and coagulation behavior of polymeric aluminum ferric silicate for high-concentration oily wastewater treatment | |
| Zhao et al. | Comparison of a novel polytitanium chloride coagulant with polyaluminium chloride: coagulation performance and floc characteristics | |
| Ahmad et al. | Improvement of alum and PACl coagulation by polyacrylamides (PAMs) for the treatment of pulp and paper mill wastewater | |
| Moussas et al. | A study on the properties and coagulation behaviour of modified inorganic polymeric coagulant—Polyferric silicate sulphate (PFSiS) | |
| CN105540797B (en) | Efficient water treatment composite flocculant | |
| Wei et al. | Performance and mechanism of polyferric-quaternary ammonium salt composite flocculants in treating high organic matter and high alkalinity surface water | |
| CN103342406B (en) | Polymeric silicic acid-polyferric sulfate titanium inorganic macromolecular composite flocculant and preparation method and application thereof | |
| US5667697A (en) | Colloidal silica/polyelectrolyte blends for natural water clarification | |
| CN100348511C (en) | Flocculation agent of poly ferric-dimethyl diallyl ammonium chloride homopolymer inorganic organic composited and preparation process thereof | |
| CN105523620B (en) | A kind of ferric sulfate of polymerized silica base inorganic-organic composite flocculating agent and preparation method thereof | |
| CN100500589C (en) | Boron-containing polysilic aluminum ferric sulfate composite flocculant | |
| CN105923850A (en) | Treatment technology of refuse leachate membrane concentration liquid | |
| CN105036269B (en) | A kind of multiple-effect water treatment agent and preparation method thereof and method for treating water | |
| Zhang et al. | Effects of alkalinity on interaction between EPS and hydroxy-aluminum with different speciation in wastewater sludge conditioning with aluminum based inorganic polymer flocculant | |
| CN101274780A (en) | Polymeric ferric polysulfate composite coagulant and application thereof | |
| CN101805051A (en) | Compound phosphoric polyferric sulfate flocculant and production method thereof | |
| CN1385373A (en) | Coagulant for sewage treatment | |
| CN108191020A (en) | A kind of novel liquid complexing nano flocculant preparation method | |
| CN102689906B (en) | Method for preparing polysilicate aluminum ferric chloride by using aluminum foil acid and ferrous acid | |
| CN104495995A (en) | Method for preparing polyaluminum ferric chloride sulfate by using industrial waste | |
| CN105000649A (en) | Preparation method for polysilicate aluminum magnesium-chitosan composite flocculant | |
| CN103964554B (en) | Polyaluminum sulfate titanium-polydimethyldiallylachloride chloride composite coagulant and preparation and application method thereof | |
| CN113354045A (en) | Polysilicate aluminum ferric flocculant and preparation method and application thereof | |
| CN111410259A (en) | Novel coagulation wastewater treatment process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220902 Address after: Building 1, No. 2680, Fuyuan Road, Baoshan District, Shanghai, 201900 Patentee after: JIEAIXI ENVIRONMENTAL PROTECTION TECHNOLOGY (SHANGHAI) Co.,Ltd. Address before: Room 173, 2nd floor, Building 12, Jinwen Road, Zhuqiao Town, Pudong New Area, Shanghai, 201203 Patentee before: SHANGHAI LICHANG ENVIRONMENTAL ENGINEERING Co.,Ltd. |