CN104445655A - Method for preparing wastewater treatment reagent - Google Patents
Method for preparing wastewater treatment reagent Download PDFInfo
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- CN104445655A CN104445655A CN201410749982.4A CN201410749982A CN104445655A CN 104445655 A CN104445655 A CN 104445655A CN 201410749982 A CN201410749982 A CN 201410749982A CN 104445655 A CN104445655 A CN 104445655A
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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
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
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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
- C02F2101/20—Heavy metals or heavy metal 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
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
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- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a method for preparing a wastewater treatment reagent. The method comprises the following steps: taking the raw materials at the weight ratio; adding polyether multi-amino methylene phosphonate-N-oxide, polyacrylic acid and water to a reaction kettle; fully stirring, and heating at a certain temperature, so as to dissolve polyether multi-amino methylene phosphonate-N-oxide and the polyacrylic acid into gel; cooling a gel mixture, adding aromatic thiazole and organic phosphonate while stirring, simultaneously heating, and stirring at the temperature; cooling the mixture, simultaneously adding a sulfonic copolymer while stirring, and further stirring after the sulfonic copolymer is added; discharging, cooling, drying and crushing the mixture, so as to obtain the wastewater treatment reagent. The wastewater treatment reagent prepared by the method has the properties of high efficiency, low cost, wide use, no corrosion and no toxicity, is capable of removing heavy metal in wastewater, and is capable of playing a good removal role in other pollutants except for heavy metal.
Description
Technical field
The invention belongs to the technical field of water treatment, in particular to a kind of preparation method of the Waste water treatment medicament for the treatment of sewage.
Background technology
Sewage disposal technology has a very important role to water saving, the problem such as energy-conservation, but also affects to environment in the use procedure of sewage treatment drug simultaneously.In cooling water system, water temperature is higher than under the various occasions of envrionment temperature, and the fouling of the inorganic salt such as calcium carbonate can bring serious consequence.In recent years, in water treatment field, the water technology of using basic, non-adjust ph is growing, wherein adds corrosion-mitigation scale-inhibition medicament, low-phosphorous, without phosphorus formula application more and more extensive, without phosphorus Green Water treatment agent has become the hot subject of domestic and international water conditioner research aspect.Scientific utilization water treatment agent can effectively protection against corrosion and prevent fouling, thus the utilization ratio of raising equipment and water and reach the object of saving water source and the energy.
In addition, in various water system, inevitably there are various source of pollution, particularly some microorganisms are as bacterium algae, can spread by large-scale breeding, havoc water quality, and produce great corrosion failure effect to the container of storage of water system.
Current, environment protection has become the problem of World Focusing, and the emission request of industrial sewage is strict; country takes corresponding compulsory measure; seek a kind of effective sewage-treating agent, can reach sewage discharge requirement after can making sewage disposal, be numerous enterprises urgent need to solve the problem.
Chemical precipitation method is extensively used in sewage disposal, it in waste water, adds some chemical agent make it and Pollutants in Wastewater generation chemical reaction, form the solid product of indissoluble, then carry out solid-liquid separation, thus a kind of method of removing water pollutant.At present in some industries, as black water, oil-containing wastewater, dyeing waste water, paper waste etc. the medicament that adopts, poor processing effect, settling velocity are slow, and medicament expense is higher, and some enterprise also causes equipment heavy corrosion.
Colliery aborning, produces a large amount of black waters, if do not processed in time will cause severe contamination to these water.The process of existing slime water treatment method many employings adding medicine, polyaddition aluminum chloride or calcium chloride and polyacrylamide coupling in black water, precipitation is administered.Owing to introducing chlorion in a large number, thus cause equipment heavy corrosion.
Oil extraction in oil field factory recovered water is with crude oil from reservoir exploitation out, not only crude oil is carried in waste water, the various salt in stratum and gas is also flow in the oil reservoir of High Temperature High Pressure, in oil recovery process, from stratum, carry out many suspended solidss again, therefore, the feature of oil field extracted water be not only COD and oil-contg high, and temperature is high, salinity is high.Many employing dosing sedimentation and filtration methods process now, dosing mostly is polymeric aluminum, and ubiquity problem is that treatment effect is bad.
Be in the patent of 201010591583.1 at application number, disclose a kind of sewage-treating agent, use this treatment agent process trade effluent, it comprises zeolite powder, wilkinite, hydrochloric acid, ferric sulfate, magnesium sulfate, kaolin; Weight ratio between each component is: 1: 0.2-0.4: 1: 0.05-1: 0.3-0.4; Zeolite powder and bentonitic weight ratio are 0.7-1-0.3-1.
And disclose a kind of preparation method of sewage-treating agent, comprise the following steps:
(1) zeolite powder, wilkinite is taken according to the above ratio, hydrochloric acid, ferric sulfate, magnesium sulfate, kaolin;
(2) zeolite powder is put into the roasting of High Temperature Furnaces Heating Apparatus 500-600 degree, 20 minutes, be cooled to about 100;
(3) by the zeolite powder of high-temperature roasting and wilkinite, ferric sulfate, magnesium sulfate, kaolin puts into reactor mixing and stirring.
In the patent of application number 201110355989.4, Waste water treatment medicament is Al-Fe-Mg compound, and wherein Al3+ accounts for 30 ~ 40%, Fe3+ accounts for 20 ~ 30%, Mg2+ and accounts for 30 ~ 40%, also has a small amount of Mn2+ and lithopone, Mn2+ can use MnS04, accounts for 5%; Lithopone accounts for 5%, Al3+ and can add with Tai-Ace S 150 [Al2 (SO4) 3]; Fe3+ can add with [Fe2 (S04) 3]; Mg2+ can add with magnesium sulfate (MgSO4); Lithopone is the mixture of zinc sulphide and barium sulfate, and molecular formula is: ZnS+BaS04, and ratio is 3:7.
Compound method adopts general method Homogeneous phase mixing to form.(about 15 minutes) the whole dissolving that at room temperature stir can use.Use temperature is at 5 DEG C ~ 50 DEG C.
The ultimate principle of disposing of sewage is destroyed by the colloid in sewage.Exist in colloidal state containing a large amount of suspended substance, emulsification etc. in sewage.Use medicament of the present invention colloid surface charge neutralization in sewage can be fallen, thus destroy colloidal suspended substance and emulsification etc., make suspended substance rapid precipitation.
This Waste water treatment medicament is applicable to black water, oily(waste)water, dyeing waste water, paper waste, chemical industry and municipal effluent etc.After adding this medicament in sewage, suspended substance flocculates at once, and the alumen ustum of generation is large, and fast, efficiency is high, and Floc strength is high, and hydrophobic performance is good, is beneficial to press filtration for precipitation.Filter cake moisture content after press filtration is low, and quality is good.The medicament expense processing every cube of this medicament of sewage is only about 60 percent of other medicament expenses.
After this chemicals treatment, the pH value of solution is similar to neutrality 6.5 ~ 8.5, not containing Cl-ion, when after process Water circulation, effectively can protect the steel construction in aqueous systems, make it exempt from corrosion, therefore can reduce a large amount of equipment maintenance costs every year.This Waste water treatment medicament purity is high, inclusion-free, without dust, the aqueous solution is as clear as crystal.This medicament nontoxicity, on operator without impact, the problems such as the rear water non-secondary pollution of process.
Existing water technology processes objectionable impuritiess such as the heavy metals in trade effluent, and a good removing effect can not be reached for the objectionable impurities in waste water except heavy metal, deposit the problem being difficult to eliminate objectionable impurities when especially processing industrial circulate water.In existing wastewater treatment also there is the problems such as poor processing effect, settling velocity is slow, cost is high, equipment heavy corrosion in institute's with medicament.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of preparation method of Waste water treatment medicament, comprise the steps:
Step one: get raw material by weight proportion: polyethers polyamino methylene phosphonic acid salt-N-oxide compound 12-16 part, polyacrylic acid 8-12 part, aromatic thiazole 25-35 part, organic phosphonate 5-10 part, co-polymer of sulfonate 40-45 part;
Step 2: polyethers polyamino methylene phosphonic acid salt-N-oxide compound, polyacrylic acid and water are joined in reactor, fully stirs;
Step 3: heat 1-1.5 hour at a certain temperature, make polyethers polyamino methylene phosphonic acid salt-N-oxide compound and polyacrylic acid be dissolved as glue;
Step 4: by the colloidal mixture cooling in step 3, add aromatic thiazole and organic phosphonate while stirring, simultaneously raised temperature, and stir 0.5 hour at such a temperature;
Step 5: lowered the temperature by the mixture in step 4, add co-polymer of sulfonate while stirring simultaneously, after treating that co-polymer of sulfonate adds, continues stirring 0.5 hour;
Step 6: the mixture in step 5 carried out discharging, cooling, drying and pulverize, thus obtaining water treatment agent.
As preferably, in medicament, the weight percent of each component is as follows: polyethers polyamino methylene phosphonic acid salt-N-oxide compound 13 parts, polyacrylic acid 10 parts, aromatic thiazole 29 parts, organic phosphonate 8 parts, co-polymer of sulfonate 40 parts.
As preferably, the certain temperature in step 3 is 75-85 DEG C.
As preferably, the stirring of step 4 is carried out at 75-80 DEG C.
As preferably, the stirring in step 5 is carried out at 20-25 DEG C.
The invention has the beneficial effects as follows:
Polyethers polyamino methylene phosphonic acid salt-N-oxide compound is a kind of macromolecular phosphonate scale inhibitor, and have certain dispersive ability, it is for recirculating cooling water system excellent, and more stable in sewage, generally can not oxidized property biocide degraded.And by polyethers polyamino methylene phosphonic acid salt-N-oxide compound and polyacrylic acid and co-polymer of sulfonate with the use of time, its scale-inhibiting properties can be improved further.
Polyacrylic acid in the present invention is lower molecular weight polyelectrolyte, has good chelating ability.Excellent dispersing property is had to calcium phosphate and hydrous iron oxide.In use, also need to add inhibiter, to prevent the corrosion to copper.The Scale inhibitors of calcium carbonate, calcium sulfate and barium sulfate is used as in water treatment, and the dispersion agent of suspended matter in water.Can be used in the process of water coolant and feedwater.Also can be used in the evaporation concentration of the liquid of paper industry and mining industry, with good antiscale property.
Gained finished product of the present invention is added in 1:600 ratio and needs, in water body to be processed, in actual water body process, to carry out Preliminary Applications, obtain good effect.After applying finished product of the present invention, a good removing effect is reached for the nuisance mass-energy in waste water except heavy metal, when especially processing industrial circulate water, deposit the problem being difficult to eliminate objectionable impurities.Effect is as follows: effectively removal heavy metal reaches more than 85%, COD clearance and reaches more than 90%, BOD removal rate up to more than 92%.
The water treatment agent that present method obtains has high-level efficiency, low cost, wide, corrosion-free, the avirulent performance of adaptation, can not only remove the heavy metal in sewage, and other pollutent simultaneously outside energy heavy metal plays good removal effect.
Embodiment
For making the object of the embodiment of the present invention and technical scheme clearly, be clearly and completely described to the technical scheme of the embodiment of the present invention below.Obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on described embodiments of the invention, the every other embodiment that those of ordinary skill in the art obtain under without the need to the prerequisite of creative work, all belongs to the scope of protection of the invention.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Polyacrylic acid in the present invention is lower molecular weight polyelectrolyte, has good chelating ability.Excellent dispersing property is had to calcium phosphate and hydrous iron oxide.In use, also need to add inhibiter, to prevent the corrosion to copper.The Scale inhibitors of calcium carbonate, calcium sulfate and barium sulfate is used as in water treatment, and the dispersion agent of suspended matter in water.Can be used in the process of water coolant and feedwater.Also can be used in the evaporation concentration of the liquid of paper industry and mining industry, with good antiscale property.
The carboxyl functional group generating portion ionization in aqueous of polypropylene sodium, thus has electroconductibility, is called polyelectrolyte.Carboxylate radical in polyacrylic acid has sequestering action to calcium ion, magnesium ion plasma, thus produces scale-inhibiting properties.Polyacrylic acid ionogen can also have dissemination to the amorphous substance such as earth, corrosion product, be a kind of dispersion agent.
For general water quality situation, the independent consumption of this product is generally at 2-15mg/L.Due in cooling water system, polyacrylic acid shows threshold effect clearly, and the size therefore adding dosage is important processing condition.Dosage is very few, does not play scale effect, adds dosage excessive, can cause unnecessary waste.Concerning the polyacrylic acid of relative molecular mass 1000 to 5000, application quality concentration range is 0.1-20mg/L.But how many mass concentrations are more suitable on earth, except the impact of relative molecular weight size, also relevant with the various ambient conditions of handled water, processing condition.But concerning the polyacrylic acid of certain molecular mass size, under certain condition of water quality and processing condition, always there is a more suitably mass concentration scope, this scope will grope by certain test just can obtain sometimes.Can as a kind of dirt dispersion agent component in molybdenum system, tungsten system, phosphorus system and phosphine system formula.
For the polyacrylic acid relative molecular mass of water conditioner generally at 2500-5000, within the scope of this, molecular weight width is little to its resistance calcium carbonate performance impact.When relative molecular mass is lower, the effect of this product is mainly scale inhibition, makes to cause dirty salt in water and is not precipitated out; When relative molecular mass is higher, the effect of this product is mainly dispersion, and the dirty salt that causes be settled out is not adhered on wall of container or duct wall.In order to make this product play these two kinds effects simultaneously, in water treatment, the polyacrylic acid fusion of two kinds of molecular weight can use.
Because polyacrylic acid is Anionic polyelectrolytes, avoid and cationic polyelectrolyte compatibility.Therefore, in the sterilization, algae removal process of recirculated cooling water, when with this non oxidizing bactericide of geramine belonging to cationic polyelectrolyte class material to system carry out impact add process time, must reduce or preferably stop using polyacrylic acid.Because the solubleness of polyacrylic alkaline metal salt in water is higher, package stability is also better, therefore often by for subsequent use with salify class in it, N-process carries out usually after obtained polyacrylic acid solution.
Embodiment 1
Waste water treatment medicament, mainly comprise polyethers polyamino methylene phosphonic acid salt-N-oxide compound, polyacrylic acid, aromatic thiazole, organic phosphonate and co-polymer of sulfonate, in medicament, the weight percent of each component is polyethers polyamino methylene phosphonic acid salt-N-oxide compound 12%, polyacrylic acid 8%, aromatic thiazole 35%, organic phosphonate 5%, co-polymer of sulfonate 40%.
The preparation method of Waste water treatment medicament, comprises the steps:
Step one: get raw material by weight proportion: polyethers polyamino methylene phosphonic acid salt-N-oxide compound 12 parts, polyacrylic acid 8 parts, aromatic thiazole 35 parts, organic phosphonate 5 parts, co-polymer of sulfonate 40 parts;
Step 2: polyethers polyamino methylene phosphonic acid salt-N-oxide compound, polyacrylic acid and water are joined in reactor, fully stirs;
Step 3: heat 1-1.5 hour at 75 DEG C of temperature, makes polyethers polyamino methylene phosphonic acid salt-N-oxide compound and polyacrylic acid be dissolved as glue;
Step 4: by the colloidal mixture cooling in step 3, add aromatic thiazole and organic phosphonate while stirring, simultaneously raised temperature to 75 DEG C, and stir 0.5 hour at such a temperature;
Step 5: carried out being cooled to 20 DEG C by the mixture in step 4, add co-polymer of sulfonate while stirring simultaneously, after treating that co-polymer of sulfonate adds, continues stirring 0.5 hour;
Step 6: the mixture in step 5 carried out discharging, cooling, drying and pulverize, thus obtaining water treatment agent.
Embodiment 2
Waste water treatment medicament, mainly comprise polyethers polyamino methylene phosphonic acid salt-N-oxide compound, polyacrylic acid, aromatic thiazole, organic phosphonate and co-polymer of sulfonate, in medicament, the weight percent of each component is polyethers polyamino methylene phosphonic acid salt-N-oxide compound 16%, polyacrylic acid 8%, aromatic thiazole 31%, organic phosphonate 5%, co-polymer of sulfonate 40%.
The preparation method of Waste water treatment medicament, comprises the steps:
Step one: get raw material by weight proportion: polyethers polyamino methylene phosphonic acid salt-N-oxide compound 16 parts, polyacrylic acid 8 parts, aromatic thiazole 31 parts, organic phosphonate 5 parts, co-polymer of sulfonate 40 parts;
Step 2: polyethers polyamino methylene phosphonic acid salt-N-oxide compound, polyacrylic acid and water are joined in reactor, fully stirs;
Step 3: heat 1-1.5 hour at 85 DEG C of temperature, makes polyethers polyamino methylene phosphonic acid salt-N-oxide compound and polyacrylic acid be dissolved as glue;
Step 4: by the colloidal mixture cooling in step 3, add aromatic thiazole and organic phosphonate while stirring, simultaneously raised temperature to 85 DEG C, and stir 0.5 hour at such a temperature;
Step 5: carried out being cooled to 25 DEG C by the mixture in step 4, add co-polymer of sulfonate while stirring simultaneously, after treating that co-polymer of sulfonate adds, continues stirring 0.5 hour;
Step 6: the mixture in step 5 carried out discharging, cooling, drying and pulverize, thus obtaining water treatment agent.
Embodiment 3
Waste water treatment medicament, mainly comprise polyethers polyamino methylene phosphonic acid salt-N-oxide compound, polyacrylic acid, aromatic thiazole, organic phosphonate and co-polymer of sulfonate, in medicament, the weight percent of each component is polyethers polyamino methylene phosphonic acid salt-N-oxide compound 14%, polyacrylic acid 10%, aromatic thiazole 30%, organic phosphonate 6%, co-polymer of sulfonate 40%.
The preparation method of Waste water treatment medicament, comprises the steps:
Step one: get raw material by weight proportion: polyethers polyamino methylene phosphonic acid salt-N-oxide compound 14 parts, polyacrylic acid 10 parts, aromatic thiazole 30 parts, organic phosphonate 6 parts, co-polymer of sulfonate 40 parts;
Step 2: polyethers polyamino methylene phosphonic acid salt-N-oxide compound, polyacrylic acid and water are joined in reactor, fully stirs;
Step 3: heat 1-1.5 hour at 80 DEG C of temperature, makes polyethers polyamino methylene phosphonic acid salt-N-oxide compound and polyacrylic acid be dissolved as glue;
Step 4: by the colloidal mixture cooling in step 3, add aromatic thiazole and organic phosphonate while stirring, simultaneously raised temperature to 80 DEG C, and stir 0.5 hour at such a temperature;
Step 5: carried out being cooled to 25 DEG C by the mixture in step 4, add co-polymer of sulfonate while stirring simultaneously, after treating that co-polymer of sulfonate adds, continues stirring 0.5 hour;
Step 6: the mixture in step 5 carried out discharging, cooling, drying and pulverize, thus obtaining water treatment agent.
As preferred mode, above-mentioned polyethers polyamino methylene phosphonic acid salt-N-oxide compound can adopt polyethers polyamino methylene phosphonic acid salt-N-sodium oxide.Above-mentioned organic phosphonate can adopt organic phospho acid sodium.
Clear water respectively for waste water before treatment and solid-liquid separation detects COD, BOD and SS (suspended substance in water quality), and detects total nitrogen, total phosphorus and ammonia-nitrogen content, and result is as follows:
COD and BOD drops to 1100mg/L and 250mg/L by initial 10000mg/L and 3590mg/L respectively, COD and BOD clearance reaches 89% and 93% respectively;
SS drops to 280mg/L by initial 3386mg/L, and SS clearance reaches 92%;
Total nitrogen content drops to 22mg/L by 66.5mg/L, and total phosphorous drops to 1.0mg/L by 11.1mg/L, and ammonia-nitrogen content drops to 7.5mg/L by 15.6mg/L.
Apparent effect measuring:
Before process, chroma in waste water is 2000 times, and the clear water colourity after process is less than 36 times;
Compared to waste water before process, the foul odour of the clear water after process obviously alleviates;
Before process, chroma in waste water is 110 times, and the clear water colourity after process drops to 22 times;
Before process, turbidity of wastewater is 258NTU, and the clear water turbidity after process drops to 36NTU.
These are only embodiments of the present invention, it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (5)
1. a preparation method for Waste water treatment medicament, is characterized in that, comprises the steps:
Step one: get raw material by weight proportion: polyethers polyamino methylene phosphonic acid salt-N-oxide compound 12-16 part, polyacrylic acid 8-12 part, aromatic thiazole 25-35 part, organic phosphonate 5-10 part, co-polymer of sulfonate 40-45 part;
Step 2: polyethers polyamino methylene phosphonic acid salt-N-oxide compound, polyacrylic acid and water are joined in reactor, fully stirs;
Step 3: heat 1-1.5 hour at a certain temperature, make polyethers polyamino methylene phosphonic acid salt-N-oxide compound and polyacrylic acid be dissolved as glue;
Step 4: by the colloidal mixture cooling in step 3, add aromatic thiazole and organic phosphonate while stirring, simultaneously raised temperature, and stir 0.5 hour at such a temperature;
Step 5: lowered the temperature by the mixture in step 4, add co-polymer of sulfonate while stirring simultaneously, after treating that co-polymer of sulfonate adds, continues stirring 0.5 hour;
Step 6: the mixture in step 5 carried out discharging, cooling, drying and pulverize, thus obtaining water treatment agent.
2. the preparation method of a kind of Waste water treatment medicament according to claim 1, it is characterized in that, in medicament, the weight percent of each component is as follows: polyethers polyamino methylene phosphonic acid salt-N-oxide compound 13 parts, polyacrylic acid 10 parts, aromatic thiazole 29 parts, organic phosphonate 8 parts, co-polymer of sulfonate 40 parts.
3. the preparation method of a kind of Waste water treatment medicament according to claim 1, is characterized in that, the certain temperature in step 3 is 75-85 DEG C.
4. the preparation method of a kind of Waste water treatment medicament according to claim 1, is characterized in that, the stirring of step 4 is carried out at 75-80 DEG C.
5. the preparation method of a kind of Waste water treatment medicament according to claim 1, is characterized in that, the stirring in step 5 is carried out at 20-25 DEG C.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4070551B2 (en) * | 2002-09-17 | 2008-04-02 | 株式会社荏原製作所 | Aqueous scale inhibitor and prevention method |
| CN101838057A (en) * | 2009-03-16 | 2010-09-22 | 董兆祥 | Multifunctional anti-incrustation corrosion inhibitor and preparation method thereof |
| CN102432112A (en) * | 2011-11-01 | 2012-05-02 | 中冶建筑研究总院有限公司 | Complexing agent |
| CN103466814A (en) * | 2013-09-03 | 2013-12-25 | 山东天庆科技发展有限公司 | High temperature resisting composite water treatment agent and preparation method thereof |
-
2014
- 2014-12-10 CN CN201410749982.4A patent/CN104445655A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4070551B2 (en) * | 2002-09-17 | 2008-04-02 | 株式会社荏原製作所 | Aqueous scale inhibitor and prevention method |
| CN101838057A (en) * | 2009-03-16 | 2010-09-22 | 董兆祥 | Multifunctional anti-incrustation corrosion inhibitor and preparation method thereof |
| CN102432112A (en) * | 2011-11-01 | 2012-05-02 | 中冶建筑研究总院有限公司 | Complexing agent |
| CN103466814A (en) * | 2013-09-03 | 2013-12-25 | 山东天庆科技发展有限公司 | High temperature resisting composite water treatment agent and preparation method thereof |
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Application publication date: 20150325 |