CN102765790A - Preparation method of inorganic-organic composite coagulant - Google Patents

Preparation method of inorganic-organic composite coagulant Download PDF

Info

Publication number
CN102765790A
CN102765790A CN2012102758448A CN201210275844A CN102765790A CN 102765790 A CN102765790 A CN 102765790A CN 2012102758448 A CN2012102758448 A CN 2012102758448A CN 201210275844 A CN201210275844 A CN 201210275844A CN 102765790 A CN102765790 A CN 102765790A
Authority
CN
China
Prior art keywords
inorganic
water
preparation
fecl
ammonium chloride
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.)
Pending
Application number
CN2012102758448A
Other languages
Chinese (zh)
Inventor
高宝玉
曹百川
赵爽
王萌萌
岳钦艳
王燕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University
Original Assignee
Shandong University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong University filed Critical Shandong University
Priority to CN2012102758448A priority Critical patent/CN102765790A/en
Publication of CN102765790A publication Critical patent/CN102765790A/en
Pending legal-status Critical Current

Links

Landscapes

  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The invention relates to a preparation method of an inorganic-organic composite coagulant, which comprises the following steps: inorganic matters AlCl3 and/or FeCl3 are dissolved in distilled water, and added with Na2CO3 to allow degree of alkalization to be 0.5-2.0; when Na2CO3 is dissolved in water, dimethyl diallyl ammonium chloride homopolymer is added in the solution according to that the mass ratio of Al and/or Fe to dimethyl diallyl ammonium chloride homopolymer is (4-8):1; and the homopolymer is mixed with the solution uniformly, and reacted for 1-3h to obtain the inorganic-organic composite coagulant. The inorganic-organic composite coagulant provided by the invention is prepared by taking AlCl3, FeCl3, Na2CO3, NaH2PO4 and PDMDAAC (poly dimethyl diallyl ammonium chloride) as main raw materials, has the characteristics of low dose, strong electric neutralizing capacity, large molecular weight and little sludge amount when being used, and has better treatment effect on the algae-containing raw water.

Description

A kind of inorganic-preparation method of organic compound coagulant
Technical field
The present invention relates to a kind of inorganic-preparation method of organic compound coagulant, particularly a kind of preparation method who is used to contain inorganic-organic compound coagulant of the former water treatment of algae belongs to environment and technical field of chemistry.
Background technology
Coagulation is the agglomeration process of water-borne glue body particle and small suspended substance.Coagulation comprises the cohesion and two aspects of flocculating, and cohesion is meant the steady process of taking off of water-borne glue body, and flocculation is meant the steady agglomeration of particles process of taking off.Coagulation is one of most important technology in water and the wastewater treatment, and its treatment effect has determined the operation condition of subsequent technique, and effluent quality and running cost are had bigger influence.In decades in the past, the research of coagulation technology mainly concentrates on coagulation chemistry, coagulation physics and coagulation process and learns three aspects.Along with theoretical constantly perfect of coagulation, research focus in recent years turns to the exploitation of all kinds of coagulants and the aspects such as control of use, coagulating process and condition gradually.
The research and development of novel coagulating agent are the research focuses of water treatment field, its total development trend be from low molecule to polymer, single type to compound, single functional type to multifunctional type.According to the chemical ingredients of coagulating agent, can it be divided into inorganic coagulant, organic polymer coargulator, compound coagulant and microbial flocculant.Inorganic polymer coagulant have suitability good, to characteristics such as the growth of the applied widely and flco of water temperature and pH are fast, its main drawback is that the mud generation is big.The advantage of organic polymer coargulator is adding less, and shortcoming is that cost is high.Inorganic-organic compound coagulant is to pass through to take place physical-chemical reaction before use by inorganic coagulant and organic polymer coargulator; A kind of stable prod that forms; Have stronger charge neutrality ability and adsorption bridging ability, can bring into play the synergy of two kinds of components, improve coagulation effect.
Because industrial and agricultural production makes in the surface water the concentrating of nutrients such as nitrogen phosphorus increase, and causes algal bloom under optimum conditions easily, causes water pollution incidents such as wawter bloom, causes the rapid deterioration of water quality, influences the functions of use of surface water.In addition, in water technology, the algae too high levels can reduce deposition efficiency, stops up the filter tank, causes effluent quality to worsen.Water factory extensively adopts coagulation-filtration-sterilization conventional processes at present, and used coagulating agent is an inorganic coagulant, and this technology has removal effect preferably to turbidity, but not good to the removal effect of organism and algae.To above problem, when processing contains the former water of algae, adopt novel coagulating agent, can under the prerequisite that does not change existing technology, improve the algae removal rate, improve effluent quality, have good economy, society and Significance for Environment.
Chinese patent document CN101985373A (application number 201010566885.3) and Chinese patent document CN102276036A (application number 201110210583.7) adopt raw materials such as water glass, iron trichloride and mineral acid; Make polymeric silicicacid class inorganic coagulant, can effectively remove frustule.Chinese patent CN101054222 (CN200710020777.4) then adopts flyash, ultrapure magnetite powder and concentrated hydrochloric acid to process compound magnetic flocculation agent, is used for the processing of algal tufa.More than invention is the inorganic compounding coagulating agent, when processing contains the former water of algae, still has the high problem of dosage.
Summary of the invention
The present invention is directed to the deficiency of prior art, provide a kind of inorganic-preparation method of organic compound coagulant.
Terminological interpretation
Basicity: basicity refers to degree of hydroxylation, is the ratio of hydroxyl equivalent and the equivalent of aluminium and/or iron in Poly aluminum Chloride (PAC), poly-ferric chloride or the aluminium iron polychloride.
Technical scheme of the present invention is following:
A kind of inorganic-preparation method of organic composite coagulator, comprise the steps:
With inorganics AlCl 3And/or FeCl 3Be dissolved in the zero(ppm) water, add Na 2CO 3Making basicity is 0.5～2.0, treats Na 2CO 3After the dissolving; According to Al and/or Fe element and dimethyl diallyl ammonium chloride homopolymer (PDMDAAC) mass ratio is (4～8): 1 ratio adds the dimethyl diallyl ammonium chloride homopolymer; Mix under the normal temperature, reaction 1～3h makes inorganic-organic composite coagulator.
Preferred according to the present invention, said inorganics is FeCl 3Perhaps AlCl 3With FeCl 3Mixing the time, treat Na 2CO 3After the dissolving, also comprise adding stablizer NaH 2PO 4Step; Further preferred, said Fe element and NaH 2PO 4The mass ratio of middle P element is 25: (1～3).
Preferred according to the present invention, said inorganics is AlCl 3With FeCl 3Mixing the time, the mol ratio of Al element and Fe element is (3～11): 1.
Preferred according to the present invention, said inorganics is AlCl 3The time, add Na 2CO 3Making basicity is 1.0～2.0; Said inorganics is FeCl 3Perhaps AlCl 3With FeCl 3Mixing the time, add Na 2CO 3Making basicity is 0.5～1.5.
When to AlCl 3Solution, FeCl 3Solution or AlCl 3And FeCl 3Add Na in the mixing solutions 2CO 3The time, can produce Poly aluminum Chloride (PAC), poly-ferric chloride or aluminium iron polychloride.
When inorganics is AlCl 3The time, the inorganic-organic composite coagulator that makes is colourless liquid, wherein Al 2O 3Mass content be 9.4～10.5%; When inorganics is AlCl 3And FeCl 3The time, the inorganic-organic composite coagulator that makes is light brown liquid, wherein Al 2O 3And Fe 2O 3Mass content be 8.2～10.0%; When inorganics is FeCl 3The time, the inorganic-organic composite coagulator that makes is brown liquid, wherein Fe 2O 3Mass content be 5.8～7.1%.
Beneficial effect
Of the present invention inorganic-organic compound coagulant is with AlCl 3, FeCl 3, Na 2CO 3, NaH 2PO 4With PDMDAAC be that main raw material makes, have the characteristics that dosage is low, the charge neutrality ability is strong, molecular weight is big and sludge quantity is few during use, to containing the former glassware for drinking water of algae treatment effect is preferably arranged.
Embodiment
Raw material sources
AlCl 3: available from Chemical Reagent Co., Ltd., Sinopharm Group, composition is AlCl 36H 2O, purity is analytical pure;
FeCl 3: available from Tianjin Da Mao chemical reagent factory, composition is FeCl 36H 2O, purity is analytical pure;
Poly Dimethyl Diallyl Ammonium Chloride: english abbreviation PDMDAAC, available from Binzhou, Shandong Jia Yuan environmental protection company, purity is CP, and solid content is 40.0wt%, and viscosity is 1.20mL/g;
Other reagent is commercially available prod commonly used, this area.
Detection method
The detection method of specific conductivity adopts GB/T 27502-2011 among the embodiment; The detection method of turbidity adopts GB/T13200-1991; The detection method of dissolved organic carbon adopts ISO 8245-1999; The chlorophyll-a content detecting method adopts GB/T 22182-2008.
Embodiment 1
The preparation method of polyaluminium chloride e-poly-dimethyl-diallyl-ammonium chloride composite flocculation agent, step is following:
Take by weighing the AlCl of 44.17g 36H 2The O solid adds dissolved in distilled water in beaker, make AlCl 3Solution;
Take by weighing the anhydrous Na of 19.63g 2CO 3, under agitation condition to AlCl 3Add Na in the solution 2CO 3, treat lather collapse after, add the 6.25g Poly Dimethyl Diallyl Ammonium Chloride, at room temperature continue then to stir 3h, be settled to 500mL with zero(ppm) water, making basicity is 2.0, Al 2O 3Content is the polyaluminium chloride e-poly-dimethyl-diallyl-ammonium chloride composite flocculation agent of 18.89g/L.
Embodiment 2
Like embodiment 1 described preparation method, difference is, adds the 3.12g Poly Dimethyl Diallyl Ammonium Chloride, at room temperature continues then to stir 3h, is settled to 500mL with zero(ppm) water then, and making basicity is 2.0, Al 2O 3Content is the polyaluminium chloride e-poly-dimethyl-diallyl-ammonium chloride composite flocculation agent of 18.89g/L.
Embodiment 3
The preparation method of poly-ferric chloride-Poly Dimethyl Diallyl Ammonium Chloride composite flocculation agent, step is following:
Take by weighing the FeCl of 23.88g 3Solid adds dissolved in distilled water in beaker, make FeCl 3Solution;
Take by weighing the anhydrous Na of 2.36g 2CO 3, under agitation condition to FeCl 3Add Na in the solution 2CO 3, treat lather collapse after, according to FeCl 3Middle Fe element and NaH 2PO 4The mol ratio of middle P element is that the amount of 25:2 adds NaH 2PO 4, add the 6.25g Poly Dimethyl Diallyl Ammonium Chloride, at room temperature continue then to stir 3h, be settled to 500mL with zero(ppm) water, making basicity is 0.5, Fe 2O 3Content is poly-ferric chloride-Poly Dimethyl Diallyl Ammonium Chloride composite flocculation agent of 13.33g/L.
Embodiment 4
Like embodiment 3 described preparing methods, difference is, adds the 3.12g Poly Dimethyl Diallyl Ammonium Chloride, at room temperature continues then to stir 3h, is settled to 500mL with zero(ppm) water then, and making basicity is 0.5, Fe 2O 3Content is poly-ferric chloride-Poly Dimethyl Diallyl Ammonium Chloride composite flocculation agent of 10g/L.
Embodiment 5
The preparation method of polymeric aluminum ferric chloride-polydimethyldiallylachloride chloride composite flocculation agent, step is following:
Take by weighing the AlCl of 34.07g 3The FeCl of solid and 5.46g 3Solid adds dissolved in distilled water in beaker, take by weighing the anhydrous Na of 8.65g 2CO 3, under agitation condition, in solution, add above-mentioned anhydrous Na 2CO 3, treat lather collapse after, according to FeCl 3Middle Fe element and NaH 2PO 4The mol ratio of middle P element is that the amount of 25:2 adds NaH 2PO 4, add the 6.25g Poly Dimethyl Diallyl Ammonium Chloride, at room temperature continue then to stir 3h, be settled to 500mL with zero(ppm) water, making basicity is 1.0, Al 2O 3+ Fe 2O 3Content is the polymeric aluminum ferric chloride-polydimethyldiallylachloride chloride composite flocculation agent of 17.84g/L.
Embodiment 6
Like embodiment 5 described preparing methods, difference is,
Add the 3.12g Poly Dimethyl Diallyl Ammonium Chloride, at room temperature continue then to stir 3h, be settled to 500mL with zero(ppm) water, making basicity is 1.0, Al 2O 3+ Fe 2O 3Content is the polymeric aluminum ferric chloride-polydimethyldiallylachloride chloride composite flocculation agent of 17.84g/L.
The effect experiment
The experiment raw water quality
Contain algae Yellow River Reservoir water, water quality is following: 19.5～24.3 ℃ of water temperatures, pH 8.17～8.43, specific conductivity 825～887 μ S/cm, turbidity 4.76～6.19NTU, 245nm absorbancy (UV 254) 0.037～0.046cm -1, dissolved organic carbon (DOC) 2.891～3.563mg/L, chlorophyll-a content 18.68～34.73 μ g/L.
Test Example 1
The polyaluminium chloride e-poly-dimethyl-diallyl-ammonium chloride composite flocculation agent of preparation among embodiment 1 and the embodiment 2 is added in the former water; Under the 200rpm rotating speed, stir 1min fast; Under the rotating speed of 40rpm, stir 15min then slowly; After staticly settling 15min, 2cm place water sampling carries out water under liquid level, and the result is as shown in table 1.
Poly aluminium chloride is as contrast, and step is the same, and the result is as shown in table 1 for treating water water quality.
Table 1
From table 1, can find out; Stronger according to embodiment 1 with the charge neutrality ability of the polyaluminium chloride e-poly-dimethyl-diallyl-ammonium chloride composite flocculation agent of embodiment 2 preparations, and the removal effect of testing turbidity, DOC and chlorophyll-a in the former water all obviously is superior to traditional inorganic polymer coagulant poly aluminium chloride.
Test Example 2
Poly-ferric chloride-Poly Dimethyl Diallyl Ammonium Chloride the composite flocculation agent of preparation among embodiment 3 and the embodiment 4 is added in the former water; Under the 200rpm rotating speed, stir 1min fast; Under the rotating speed of 40rpm, stir 15min then slowly; After staticly settling 15min, 2cm place water sampling carries out water under liquid level, and the result is as shown in table 2.
Poly-iron chloride is as contrast, and step is the same, and the result is as shown in table 2 for treating water water quality.
Table 2
Figure BDA00001972305600042
Figure BDA00001972305600051
From table 2, can find out; Stronger according to embodiment 3 with the charge neutrality ability of the poly-ferric chloride-Poly Dimethyl Diallyl Ammonium Chloride composite flocculation agent of embodiment 4 preparations, and the removal effect of testing turbidity, DOC and chlorophyll-a in the former water all obviously is superior to traditional inorganic polymer coagulant poly-iron chloride.
Test Example 3
The polymeric aluminum ferric chloride-polydimethyldiallylachloride chloride composite flocculation agent of preparation among embodiment 5 and the embodiment 6 is added in the former water; Under the 200rpm rotating speed, stir 1min fast; Under the rotating speed of 40rpm, stir 15min then slowly; After staticly settling 15min, 2cm place water sampling carries out water under liquid level, and the result is as shown in table 3.
Poly aluminium chloride iron is as contrast, and step is the same, and the result is as shown in table 3 for treating water water quality.
Table 3
Figure BDA00001972305600052
From table 3, can find out; Stronger according to embodiment 5 with the charge neutrality ability of the polymeric aluminum ferric chloride-polydimethyldiallylachloride chloride composite flocculation agent of embodiment 6 preparations, and the removal effect of testing turbidity, DOC and chlorophyll-a in the former water all obviously is superior to traditional inorganic polymer coagulant poly aluminium chloride iron.

Claims (5)

1. the preparation method of inorganic-organic composite coagulator comprises the steps:
With inorganics AlCl 3And/or FeCl 3Be dissolved in the zero(ppm) water, add Na 2CO 3Making basicity is 0.5～2.0, treats Na 2CO 3After the dissolving, be (4～8) according to Al and/or Fe element and dimethyl diallyl ammonium chloride homopolymer mass ratio: 1 ratio adds the dimethyl diallyl ammonium chloride homopolymer, mixes under the normal temperature, and reaction 1～3h makes inorganic-organic composite coagulator.
2. preparation method as claimed in claim 1 is characterized in that, said inorganics is FeCl 3Perhaps AlCl 3With FeCl 3Mixing the time, treat Na 2CO 3After the dissolving, also comprise adding stablizer NaH 2PO 4Step.
3. preparation method as claimed in claim 2 is characterized in that, said Fe element and NaH 2PO 4The mass ratio of middle P element is 25: (1～3).
4. preparation method as claimed in claim 1 is characterized in that, said inorganics is AlCl 3With FeCl 3Mixing the time, the mol ratio of Al element and Fe element is (3～11): 1.
5. preparation method as claimed in claim 1 is characterized in that, said inorganics is AlCl 3The time, add Na 2CO 3Making basicity is 1.0～2.0; Said inorganics is FeCl 3Perhaps AlCl 3With FeCl 3Mixing the time, add Na 2CO 3Making basicity is 0.5～1.5.
CN2012102758448A 2012-08-03 2012-08-03 Preparation method of inorganic-organic composite coagulant Pending CN102765790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012102758448A CN102765790A (en) 2012-08-03 2012-08-03 Preparation method of inorganic-organic composite coagulant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012102758448A CN102765790A (en) 2012-08-03 2012-08-03 Preparation method of inorganic-organic composite coagulant

Publications (1)

Publication Number Publication Date
CN102765790A true CN102765790A (en) 2012-11-07

Family

ID=47093408

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012102758448A Pending CN102765790A (en) 2012-08-03 2012-08-03 Preparation method of inorganic-organic composite coagulant

Country Status (1)

Country Link
CN (1) CN102765790A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104150573A (en) * 2014-07-04 2014-11-19 安徽三环水泵有限责任公司 Primary physicochemical enhanced coagulant and treatment method of papermaking wastewater
CN106977003A (en) * 2016-01-15 2017-07-25 宝山钢铁股份有限公司 Electrical conductivity and the method and apparatus of total iron in a kind of cold rolling hydrochloric acid acid regeneration waste water of reduction
CN108298716A (en) * 2017-12-31 2018-07-20 天津泉洁科技有限公司 A kind of novel drink water purifying method
CN110776071A (en) * 2019-10-28 2020-02-11 德蓝水技术股份有限公司 Industrial acidic wastewater treatment agent

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1594128A (en) * 2004-06-30 2005-03-16 山东大学 PDMDAAC homopolymer inorganic and organic composite flocculant and preparation process thereof
CN1724404A (en) * 2005-06-09 2006-01-25 山东大学 Flocculation agent of poly ferric-dimethyl diallyl ammonium chloride homopolymer inorganic organic composited and preparation process thereof
CN101973613A (en) * 2010-09-20 2011-02-16 上海丰信环保科技有限公司 Composite flocculant
CN102079565A (en) * 2009-11-27 2011-06-01 南京理工大学 Aluminum sulfate-ferric chloride-poly dimethyl diallyl ammonium chloride ternary complex coagulant as well as preparation and application methods thereof
CN102115240A (en) * 2009-12-31 2011-07-06 南京理工大学 Polyaluminum sulfate-branched poly(dimethyl diallyl ammonium chloride) composite coagulant and preparation method and application method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1594128A (en) * 2004-06-30 2005-03-16 山东大学 PDMDAAC homopolymer inorganic and organic composite flocculant and preparation process thereof
CN1724404A (en) * 2005-06-09 2006-01-25 山东大学 Flocculation agent of poly ferric-dimethyl diallyl ammonium chloride homopolymer inorganic organic composited and preparation process thereof
CN102079565A (en) * 2009-11-27 2011-06-01 南京理工大学 Aluminum sulfate-ferric chloride-poly dimethyl diallyl ammonium chloride ternary complex coagulant as well as preparation and application methods thereof
CN102115240A (en) * 2009-12-31 2011-07-06 南京理工大学 Polyaluminum sulfate-branched poly(dimethyl diallyl ammonium chloride) composite coagulant and preparation method and application method thereof
CN101973613A (en) * 2010-09-20 2011-02-16 上海丰信环保科技有限公司 Composite flocculant

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
《Chemical Engineering Journal》 20120315 Cuizhen Sun et.al Synthesis and floc properties of polymeric ferric aluminum chloride-polydimethyl diallylammonium chloride coagulant in coagulating humic acid-kaolin synthetic water 第185-186卷, *
《Desalination》 20111017 Cuizhen Sun Effect of pH and shear force on flocs characteristics for humic acid removal using polyferric aluminum chloride-organic polymer dual-coagulants 243-247 第281卷, *
CUIZHEN SUN ET.AL: "Synthesis and floc properties of polymeric ferric aluminum chloride–polydimethyl diallylammonium chloride coagulant in coagulating humic acid–kaolin synthetic water", 《CHEMICAL ENGINEERING JOURNAL》 *
CUIZHEN SUN: "Effect of pH and shear force on flocs characteristics for humic acid removal using polyferric aluminum chloride–organic polymer dual-coagulants", 《DESALINATION》 *
王萌萌等: "无机-有机复合混凝剂处理夏季引黄水库水的对比研究", 《中国环境科学》 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104150573A (en) * 2014-07-04 2014-11-19 安徽三环水泵有限责任公司 Primary physicochemical enhanced coagulant and treatment method of papermaking wastewater
CN104150573B (en) * 2014-07-04 2015-10-28 安徽三环水泵有限责任公司 A kind of one-level materialization enhanced coagulation agent of papermaking wastewater and treatment process thereof
CN106977003A (en) * 2016-01-15 2017-07-25 宝山钢铁股份有限公司 Electrical conductivity and the method and apparatus of total iron in a kind of cold rolling hydrochloric acid acid regeneration waste water of reduction
CN106977003B (en) * 2016-01-15 2020-09-25 宝山钢铁股份有限公司 Method and device for reducing conductivity and total iron in cold rolling hydrochloric acid regeneration wastewater
CN108298716A (en) * 2017-12-31 2018-07-20 天津泉洁科技有限公司 A kind of novel drink water purifying method
CN110776071A (en) * 2019-10-28 2020-02-11 德蓝水技术股份有限公司 Industrial acidic wastewater treatment agent

Similar Documents

Publication Publication Date Title
Liu et al. Rapid aerobic granulation in an SBR treating piggery wastewater by seeding sludge from a municipal WWTP
Yan et al. Relative importance of hydrolyzed Al (III) species (Ala, Alb, and Alc) during coagulation with polyaluminum chloride: a case study with the typical micro-polluted source waters
KR101409870B1 (en) Method of Preparation for High basicity polyaluminum chloride coagulant and Treating Method of water/wastewater using the same
CN100579913C (en) Polymeric ferric polysulfate composite coagulant and application thereof
CN101003390A (en) Method for preparing flocculant of ferric chloride of polysilicon acid
CN101704570B (en) Sewage treatment flocculating agent and using method thereof
CN102765790A (en) Preparation method of inorganic-organic composite coagulant
CN102765796B (en) Preparation method of loose type polyaluminum ferric chloride flocculants
Wang et al. Preparation and coagulation-flocculation performance of covalently bound organic hybrid coagulant with excellent stability
Sun et al. Comparison of epichlorohydrin–dimethylamine with other cationic organic polymers as coagulation aids of polyferric chloride in coagulation–ultrafiltration process
Chuang et al. Colloidal silica removal in coagulation processes for wastewater reuse in a high-tech industrial park
CN102633335B (en) Sewage treatment method
Tian et al. Novel covalently bound organic silicon-ferrum hybrid coagulant with excellent coagulation performance and bacteriostatic ability
Hai-Yan et al. Study on coagulation property of metal-polysilicate coagulants in low turbidity water treatment
Takdastan et al. Using of powdered activated carbon as coagulant aid in Total organic carbon removal in Koot Amir Water treatment plant
CN110040831B (en) Preparation method of sodium alginate-polymethacryloxyethyl trimethyl ammonium chloride organic flocculant
Liu et al. Effect of hydrous manganese dioxide on the treatment of low-turbidity source water: Plant-scale experience
CN1095442C (en) Active polysilicate flocculating agent and preparation method thereof
Zhao et al. Study on potato starch wastewater pretreatment using flocculation
CN114590877B (en) Construction method of compound coagulation system for efficiently removing bromate and application of compound coagulation system in water treatment
CN1785835A (en) Preparation method of flocculant for seawater desalination pretreatment
Sun et al. Decolorization of dyeing wastewater and characterization of flocs during coagulation by a new composite coagulant
Sui et al. Application of polysilicate ferric flocculant in treatment of tanning wastewater
CN115259626B (en) Sludge conditioner and preparation method thereof
Yang et al. Synergistic function of bentonite, poly-aluminum chloride, and cationic polyacrylamide to realize highly efficient coagulation–flocculation process for leachate treatment

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20121107