CN106430495A - Preparation method of composite decolorizing flocculating agent for wastewater treatment - Google Patents
Preparation method of composite decolorizing flocculating agent for wastewater treatment Download PDFInfo
- Publication number
- CN106430495A CN106430495A CN201611123198.8A CN201611123198A CN106430495A CN 106430495 A CN106430495 A CN 106430495A CN 201611123198 A CN201611123198 A CN 201611123198A CN 106430495 A CN106430495 A CN 106430495A
- Authority
- CN
- China
- Prior art keywords
- preparation
- wastewater treatment
- diethanolamine
- composite decoloration
- flocculant
- 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.)
- Granted
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 preparation method of a composite decolorizing flocculating agent for wastewater treatment. The preparation method comprises the following steps: (1) adjusting the pH values of dicyandiamide, urea and formaldehyde to be 7-8 under a stirring condition, enabling the components to react for 1-4 hours at 45-70 DEG C, then adding ammonium chloride to react for 1.5-3.5 hours, and finally adding diethanolamine to react for 0.5-1 hour; (2) dissolving polyacrylamide in water, adding a formaldehyde aqueous solution under a stirring condition, and performing a reaction for 1.5-2 hours at 45-55 DEG C, and adding diethanolamine for continuously reacting for 1-1.5 hours at 60-70 DEG C; and (3) mixing the products obtained in the step (1) and the step (2) according to a mass ratio of 1:(0.5-1), and performing heating while stirring until the temperature reaches 40-70 DEGC for reaction for 1-2 hours to obtain the composite decolorizing flocculating agent. The flocculating agent obtained by the method disclosed by the invention is simple in application and low in cost, has a good decolorizing flocculating effect on various types of wastewater, and is zero or very low in formaldehyde residues after use.
Description
Technical field
The present invention relates to technical field of waste water processing, specifically related to a kind of decolorization flocculation agent for wastewater treatment.
Background technology
Constantly accelerate with process of industrialization, water pollution problems is on the rise, water treatment problems have caused the height of people
Pay attention to.For ensureing the sustainable use of water resource, solve the problems, such as water environment pollution, done a large amount of works both at home and abroad in terms of water process
Make, develop multiple water treatment technique, such as biochemical process, ion exchange, absorption method, chemical oxidization method etc..With these method phases
Flocculent precipitation becomes, with high, economic, the easy feature of its treatment effeciency, a kind of water treatment that countries in the world commonly use to ratio
Technology.Water after the harmless process of flocculant can reuse, and improve the utilization rate of water, alleviate due to water resource not
The difficulty that foot brings to industrial development.With the enhancing of economic development and people's environmental consciousness, cheap, efficient, nontoxic and can
Complete biodegradable, the development of the novel green flocculant not producing secondary pollution are just becoming world today's water process aspect research
Important topic.
Formaldehyde dicyandiamide polymerization species flocculant is cation superpolymer, and for wastewater treatment, cost is relatively low, and its flocculation
Decolorizing effect is excellent, but its own contained free formaldehyde has the secondary pollution to water quality.The amide of polyacrylamide (PAM)
Base (CONH2) can be affine with many materials, and absorption forms hydrogen bond.High molecular PAM forms " bridge between adsorbed particle
Connection ", makes several or even dozens of particle link together, and generates floc sedimentation, and accelerated particle sinks.This makes it optimal wadding
Solidifying agent.PAM flocculant is mainly used to process various waste water, and the advantage compared with traditional inorganic flocculating agent is：Wide in variety, energy
Adapt to multiple conditions, dosage is little, efficiency high, the body refuse of generation is few, and post processing is easy.
CN105540797A reports a kind of efficient water treatment composite flocculant, by by organic flocculant and inorganic flocculation
Agent is combined and can improve flocculation sediment and decolorizing effect, and concrete scheme is by aluminium salt component, iron salt component, helps solidifying component, organic
Flocculation component and activated silicic acid group are grouped into, and aluminium salt component adopts aluminium polychlorid, polyaluminium sulfate, poly- phosphorus aluminum chloride, polymerization
Aluminium silicate, aluminum chloride, one or more combination in any of aluminum sulfate, usage amount is 10～40 parts in parts by weight；Ferrum
Salt component adopts one or more any of bodied ferric sulfate, poly-ferric chloride, ferrous sulfate, iron sulfate, iron chloride
Combination, usage amount is 1～30 part in parts by weight；Help solidifying component adopt carbide slag, magnesium hydroxide, magnesium chloride, the one of zinc chloride
Plant or two or more combination in any, usage amount is 1～10 part in parts by weight；Organic-flocculation component adopt polyacrylamide,
PDDA, polystyrene sodium sulfonate, one or more any group of dicyandiamide formaldehyde resin
Close, usage amount is 1～10 part in parts by weight；Activated silicic acid component usage amount is 1～10 part in parts by weight.Concrete at one
Embodiment in, efficient water treatment composite flocculant is：By aluminium polychlorid 40 weight portion, bodied ferric sulfate 10 weight portion, electricity
Rock ballast 5 weight portion, PDDA 1 weight portion and activated silicic acid 5 weight portion, are configured to composite flocculation agent,
And certain Pig raising wastewater is processed.Taking 100mL waste water to adjust pH is 5, adds this example flocculant 150mg, stirring and evenly mixing, sinks
Form sediment to clarification, then detected.Turbidity removal rate be 91.1%, percent of decolourization be 83.6%, total tp removal rate up to 90.1%, always
Ammonia clearance 47.8%, the clearance of COD up to 47.6%, flocculant residual rate 14.9%.
CN104671574A discloses the handling process that a kind of m-nitrobenzene sodium sulfonate produces waste water, comprise the steps：
(1) pretreatment：The pH value adjusting m-nitrobenzene sodium sulfonate production waste water is 1～4, is filtrated to get filtrate I；(2) iron-carbon micro-electrolysis
Reaction：Filtrate I is passed through in the reaction tank containing ferrum carbon ball and catalyst, after aeration, stirring reaction 4～8h, filters water outlet；
(3) flocculation process：The pH value of the water outlet of regulating step (2) is 8～11, first quick stir 1～3min, then low rate mixing 20～
60min, filters water outlet；(4) decoloring reaction：Add decolorization flocculation agent in the water outlet of step (3), first quick stirring 30～60s,
Low rate mixing 3min again；It is subsequently adding aluminium polychlorid, first quick stirring 30～60s, then low rate mixing 3min；It is eventually adding poly-
Acrylamide, first after quick stirring 30～60s, then low rate mixing 3min, filters water outlet；(5) activated carbon adsorption：To step (4)
Water outlet in add activated carbon, adsorb water outlet；(6) vacuum distillation：The water outlet of step (5) reclaims inorganic salt through vacuum distillation, dense
Contracting liquid is back in step (1) and again processes, Condensate reuse.This patent thinks, in step (4), decolorization flocculation agent, PAC and
The addition sequence of PAM can not overturn, and by the continuous use of the flocculation of distinct methods twice, makes some particle suspensions and Organic substance
Sedimentation more thorough, treatment effeciency is high, and reaction is thoroughly；Catalyst and the use of decolorising agent, reduce reaction condition, save energy
Source, has very high practicality and using value.
CN103253775B discloses a kind of microbial flocculant and the preparation side of dicyandiamide formaldehyde resin joint decolorising agent
Method, is first decoloured to dyeing waste water with dicyandiamide formaldehyde resin, then carries out flocculation treatment from microbial flocculant.
Although these methods existing achieve the raising of flocculating decoloring effect, application by compounding multiple flocculant
Operation is more complicated, relatively costly, and is all specially to design for specific waste water, and general effect is bad.
Content of the invention
It is an object of the invention to, it is modified to the preparation method of the composite decoloration flocculant of wastewater treatment, and thus obtain
Simple, low cost must be applied, and all kinds of waste water are respectively provided with the composite decoloration flocculant of excellent decolorization flocculation effect.
The technical scheme that the present invention is adopted for achieving the above object is as follows：
A kind of preparation method of the composite decoloration flocculant for wastewater treatment, it is as follows that it includes step：
(1) add dicyandiamide, carbamide and formaldehyde in a kettle., adjust pH with sodium hydrate aqueous solution under agitation
7～8, react 1h～4h at 45 DEG C～70 DEG C, add ammonium chloride reaction 1.5h～3.5h, be eventually adding diethanolamine reaction
Diethanolamine modified dicyandiamine formaldehyde condensation products are obtained after 0.5h～1h；
(2) polyacrylamide is dissolved in water, adds formalin under agitation, in 45 DEG C～55 DEG C conditions
Lower reaction 1.5h～2h, adds diethanolamine to continue reaction 1h～1.5h under the conditions of 60 DEG C～70 DEG C and obtains diethanolamine modification
Polyacrylamide；
(3) product respectively obtaining step (1) and step (2) is 1 in mass ratio：0.5～1 mixing, heated and stirred is extremely
40 DEG C～70 DEG C, react 1h～2h, obtain clear transparent solutions, cooling, obtain composite decoloration flocculant.
Further：In step (1), the molar ratio of dicyandiamide, carbamide, formaldehyde, ammonium chloride and diethanolamine is 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 dividedly in some parts on a small quantity.
Preferably, in step (1), from adding ammonium chloride to start to reaction to terminate, temperature control is at 70 DEG C～80 DEG C.
Preferably, in step (1) and (2), the feed way of diethanolamine is continuous Deca.
Preferably, in step (1), (2) and (3), the mode of described stirring is mechanical agitation, stir speed (S.S.) be 250rpm～
400rpm.
Preferably, in step (2), the molecular weight of polyacrylamide is 8,000,000.
Preferably, in step (2), polyacrylamide, formaldehyde, the molar ratio of ethylenediamine are 1:0.8～1.5:1～
1.4.
Preferably, in step (2), after adding formalin, react under the conditions of 50 DEG C～55 DEG C；Add diethanolamine
React under the conditions of 65～70 DEG C afterwards.
The invention still further relates to said method of the present invention prepares gained for the composite decoloration flocculant of wastewater treatment.
Compared with prior art, beneficial effects of the present invention are as follows：
1st, composite decoloration flocculant product is that water white transparency is thick, and stability height is it is adaptable to process all kinds of waste water.
2nd, compare traditional handicraft, and the preparation of diethanolamine modified dicyandiamine formaldehyde condensation products increases polycondensation reaction time,
Extend the strand of Dicyandiamine-formaldehyde condensation product, overcome Dicyandiamine-formaldehyde condensation product because self-molecules present amount is less and sun from
The limited shortcoming of sub- degree, improves chemistry, physical absorption performance, percent of decolourization >=93%, CODcr clearance >=80%.And it is anti-
Answer the free state formaldehyde outside system can continue reaction with the diethanolamine adding, residual formaldehyde is low.
3rd, composite decoloration flocculant of the present invention can be used alone, and need not add inorganic flocculating agent, permissible in flocculation process
Produce larger floc sedimentation, sedimentation velocity is fast.
4th, the compound scheme based on diethanolamine modified dicyandiamine formaldehyde condensation products, is significantly improving decolorization flocculation effect
While reduce cost.
5th, the inventive method gained composite decoloration flocculant, need not repeatedly add or add by exact sequence, application is simple,
Convenient.
Specific embodiment
Below by way of specific embodiment, technical scheme to be described.Raw material used and the equal city of reagent in the present invention
Sell and can obtain.
Embodiment 1
This example provides a kind of preparation method of composite decoloration flocculant, including：
(1) preparation of diethanolamine modified dicyandiamine formaldehyde condensation products：Dicyandiamide, carbamide, formaldehyde, ammonium chloride and diethanol
The molar ratio of amine is 1:0.2:1.5:0.6:0.7.Add dicyandiamide, carbamide and formaldehyde in a kettle., in stir speed (S.S.)
For adjusting pH 7～8 with sodium hydrate aqueous solution under the conditions of 250rpm, react 2h at 60 DEG C, adjust and control 75 DEG C of temperature, then
Repeatedly it is dividedly in some parts ammonium chloride reaction 3h on a small quantity, after finally adding diethanolamine reaction 0.5h in the way of continuous Deca, obtain two
Ethanolamine modified dicyandiamine formaldehyde condensation products.
(2) preparation of the polyacrylamide that diethanolamine is modified：The molecular weight of polyacrylamide is 8,000,000, wherein poly- third
Acrylamide, formaldehyde, the molar ratio 1 of diethanolamine:1:1.4.Polyacrylamide is dissolved in water, in stir speed (S.S.)
Add formalin under the conditions of 300rpm, under the conditions of 50 DEG C, react 1.5h, add diethanolamine to continue under the conditions of 65 DEG C
Reaction 1.5h obtains the polyacrylamide of diethanolamine modification.
(3) product in mass ratio 1 that step (1) and step (2) are respectively obtained：0.5 mixing, heated and stirred to 40 DEG C,
Reaction 1h, obtains clear transparent solutions, and cooling obtains composite decoloration flocculant.
Embodiment 2
This example provides a kind of preparation method of composite decoloration flocculant, including：
(1) preparation of diethanolamine modified dicyandiamine formaldehyde condensation products：Dicyandiamide, carbamide, formaldehyde, ammonium chloride and diethanol
The molar ratio of amine is 1:0.3:1.5:0.8:1.Add dicyandiamide, carbamide and formaldehyde in a kettle., in stir speed (S.S.) be
Adjust pH 7～8 with sodium hydrate aqueous solution under the conditions of 350rpm, react 2.5h at 65 DEG C, adjust and control 75 DEG C of temperature, then
Repeatedly it is dividedly in some parts ammonium chloride reaction 3h on a small quantity, after finally adding diethanolamine reaction 1h in the way of continuous Deca, obtain diethyl
Alkamine modified Dicyandiamine-formaldehyde condensation product.
(2) preparation of the polyacrylamide that diethanolamine is modified：The molecular weight of polyacrylamide is 8,000,000, wherein poly- third
Acrylamide, formaldehyde, the molar ratio 1 of diethanolamine:1.2:1.2.Polyacrylamide is dissolved in water, in stir speed (S.S.)
Add formalin under the conditions of 400rpm, under the conditions of 50 DEG C, react 1.5h, add diethanolamine to continue under the conditions of 65 DEG C
Reaction 1.5h obtains the polyacrylamide of diethanolamine modification.
(3) product in mass ratio 1 that step (1) and step (2) are respectively obtained：0.7 mixing, heated and stirred to 50 DEG C,
Reaction 1.5h, obtains clear transparent solutions, and cooling obtains composite decoloration flocculant.
Comparative example 1
This example provides a kind of composite decoloration flocculant, and it is by diethanolamine modified dicyandiamine formaldehyde condensation products and polyacrylamide
Amine is according to mass ratio 1:0.7 mixes, and wherein, diethanolamine modified dicyandiamine formaldehyde condensation products are according to embodiment 2 identical
Preparation condition is obtained.
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 in the wastewater treatment test of waste water three class waste water, the main water quality index of three class waste water is shown in Table respectively
1.
Table 1
Processing method is：In flocculation decoloration step, composite decoloration flocculant is straight according to the ingredient proportion of every liter of water 2g
Connect and be added in waste water, first 5min is stirred with the speed of 300r/min, is then stirred with the speed of 40r/min
5min, after staticly settling 45min, surveys indices.Result is referring to table 2.
Table 2
Above are only the part preferred embodiment of the present 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 concept of technical solution of the present invention, that is made appoints
What changes and changes, all within the scope of the present invention.
Claims (10)
1. a kind of preparation method of the composite decoloration flocculant for wastewater treatment is it is characterised in that inclusion step is as follows：
(1) add dicyandiamide, carbamide and formaldehyde in a kettle., under agitation with sodium hydrate aqueous solution adjust pH 7～
8, react 1h～4h at 45 DEG C～70 DEG C, add ammonium chloride reaction 1.5h～3.5h, be eventually adding diethanolamine reaction 0.5h
Diethanolamine modified dicyandiamine formaldehyde condensation products are obtained after～1h；
(2) polyacrylamide is dissolved in water, adds formalin under agitation, anti-under the conditions of 45 DEG C～55 DEG C
Answer 1.5h～2h, add diethanolamine to continue reaction 1h～1.5h under the conditions of 60 DEG C～70 DEG C and obtain the poly- of diethanolamine modification
Acrylamide；
(3) product respectively obtaining step (1) and step (2) is 1 in mass ratio：0.5～1 mixing, heated and stirred is to 40 DEG C
～70 DEG C, react 1h～2h, obtain clear transparent solutions, cooling, obtain composite decoloration flocculant.
2. the composite decoloration flocculant for wastewater treatment according to claim 1 preparation method it is characterised in that：Step
Suddenly, in (1), the molar ratio of dicyandiamide, carbamide, formaldehyde, ammonium chloride and diethanolamine is 1:0.1～0.5:1.5～3:0.5
～1.5:0.5～1.2.
3. the composite decoloration flocculant for wastewater treatment according to claim 1 preparation method it is characterised in that：Step
Suddenly, in (1), the feed way of ammonium chloride is repeatedly to be dividedly in some parts on a small quantity.
4. the composite decoloration flocculant for wastewater treatment according to claim 1 preparation method it is characterised in that：Step
Suddenly, in (1), from adding ammonium chloride to start to reaction to terminate, temperature control is at 70 DEG C～80 DEG C.
5. the composite decoloration flocculant for wastewater treatment according to claim 1 preparation method it is characterised in that：Step
Suddenly, in (1) and (2), the feed way of diethanolamine is continuous Deca.
6. the composite decoloration flocculant for wastewater treatment according to claim 1 preparation method it is characterised in that：Step
Suddenly, in (1), (2) and (3), the mode of described stirring is mechanical agitation, and stir speed (S.S.) is 250rpm～400rpm.
7. the composite decoloration flocculant for wastewater treatment according to claim 1 preparation method it is characterised in that：Step
Suddenly, in (2), the molecular weight of polyacrylamide is 8,000,000.
8. the composite decoloration flocculant for wastewater treatment according to claim 1 preparation method it is characterised in that：Step
Suddenly, in (2), polyacrylamide, formaldehyde, the molar ratio of ethylenediamine are 1:0.8～1.5:1～1.4.
9. the composite decoloration flocculant for wastewater treatment according to claim 1 preparation method it is characterised in that：Step
Suddenly, in (2), after adding formalin, react under the conditions of 50 DEG C～55 DEG C；In 65～70 DEG C of conditions after addition diethanolamine
Lower reaction.
10. the composite decoloration flocculant for wastewater treatment as described in a kind of claim as any one of claim 1 to 9
Preparation method prepares gained 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 true CN106430495A (en) | 2017-02-22 |
| CN106430495B 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) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925242A (en) * | 2017-03-20 | 2017-07-07 | 浙江工商大学 | A kind of basic fuchsin adsorbent and its preparation method and application |
| CN107162146A (en) * | 2017-05-31 | 2017-09-15 | 无锡蓝波化学品有限公司 | A kind of synthetic method of organic polymer decolorization flocculation agent and application |
| CN107500472A (en) * | 2017-09-05 | 2017-12-22 | 成都锐达机电实业有限公司 | High efficiency dephosphorating technique |
| 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 |
| CN112939177A (en) * | 2021-02-04 | 2021-06-11 | 扬州工业职业技术学院 | Novel 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 |
| CN113667404A (en) * | 2021-09-06 | 2021-11-19 | 河北三棵树涂料有限公司 | High-viscosity water-based asphalt waterproof coating and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040104178A1 (en) * | 2001-03-21 | 2004-06-03 | Polymer Ventures, Inc. | Methods of producing polyarylamines and using them for detackifying paint and removing color from aqueous systems |
| 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 |
-
2016
- 2016-12-08 CN CN201611123198.8A patent/CN106430495B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040104178A1 (en) * | 2001-03-21 | 2004-06-03 | Polymer Ventures, Inc. | Methods of producing polyarylamines and using them for detackifying paint and removing color from aqueous systems |
| 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 |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925242A (en) * | 2017-03-20 | 2017-07-07 | 浙江工商大学 | A kind of basic fuchsin adsorbent and its preparation method and application |
| CN107162146A (en) * | 2017-05-31 | 2017-09-15 | 无锡蓝波化学品有限公司 | A kind of synthetic method of organic polymer decolorization flocculation agent 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 |
| CN107500472A (en) * | 2017-09-05 | 2017-12-22 | 成都锐达机电实业有限公司 | High efficiency dephosphorating technique |
| 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 |
| CN112939177A (en) * | 2021-02-04 | 2021-06-11 | 扬州工业职业技术学院 | Novel 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 |
| CN113667404A (en) * | 2021-09-06 | 2021-11-19 | 河北三棵树涂料有限公司 | High-viscosity water-based asphalt waterproof coating and preparation method thereof |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106430495B (en) | 2019-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106430495A (en) | Preparation method of composite decolorizing flocculating agent for wastewater treatment | |
| CN104556331B (en) | PAC (polyaluminium chloride)-modified sodium alginate inorganic-organic composite flocculant and preparation method thereof | |
| CN100348511C (en) | Flocculation agent of poly ferric-dimethyl diallyl ammonium chloride homopolymer inorganic organic composited and preparation process thereof | |
| CN103342406B (en) | Polymeric silicic acid-polyferric sulfate titanium inorganic macromolecular composite flocculant and preparation method and application thereof | |
| CN105540797A (en) | Efficient water-treatment composite flocculant | |
| CN105523620B (en) | A kind of ferric sulfate of polymerized silica base inorganic-organic composite flocculating agent and preparation method thereof | |
| CN101254970B (en) | Decolorizing coagulant | |
| CN101704570A (en) | Sewage treatment flocculating agent and using method thereof | |
| CN105198061A (en) | Flocculant composition and application thereof | |
| CN102689906B (en) | Method for preparing polysilicate aluminum ferric chloride by using aluminum foil acid and ferrous acid | |
| CN104512951A (en) | Method for co-production of ploysilicate aluminium ferric sulphate and waste water treatment powder by PAC (poly aluminum chloride) residues | |
| CN102153184A (en) | Composite organic and inorganic polymeric flocculant and preparation process and application of composite organic and inorganic polymeric flocculant | |
| CN105565459B (en) | A kind of poly-ferric chloride-paper mill sludge base aminated polymer composite flocculation agent and preparation method thereof | |
| CN102936077B (en) | Treatment method of polyacrylonitrile fiber production sewage | |
| CN103964554B (en) | Polyaluminum sulfate titanium-polydimethyldiallylachloride chloride composite coagulant and preparation and application method thereof | |
| CN109354314B (en) | Combined biological bed treatment process for low-carbon-source high-ammonia-nitrogen high-organophosphorus wastewater | |
| CN101525173B (en) | Oxygenation and dimethyl diallyl ammonium chloride composite modification silicoferrite coagulating agent and preparation method thereof | |
| CN106673400A (en) | Sludge dewatering conditioner and application thereof in dewatering | |
| CN111410259A (en) | Novel coagulation wastewater treatment process | |
| CN106587314A (en) | Efficient phosphorus removal agent and preparation method thereof | |
| CN100453481C (en) | Treating agent for lincomycin hydrochloride production waste water and its preparation method and usage method | |
| CN106430698A (en) | Special water purifying agent for chloroprene rubber production and wastewater treatment method | |
| CN102897884A (en) | Composite flocculant as well as preparation method and application thereof on processing printing and dyeing wastewater | |
| CN102219290B (en) | Complex coagulant for advanced treatment of biochemical tail water, and its preparation method and application | |
| CN108557973A (en) | A kind of polyacrylamide flocculant and preparation method for sewage disposal |
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. |