CN102206000A - Application of efficient dephosphorization agent in wastewater treatment - Google Patents
Application of efficient dephosphorization agent in wastewater treatment Download PDFInfo
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- CN102206000A CN102206000A CN 201110104033 CN201110104033A CN102206000A CN 102206000 A CN102206000 A CN 102206000A CN 201110104033 CN201110104033 CN 201110104033 CN 201110104033 A CN201110104033 A CN 201110104033A CN 102206000 A CN102206000 A CN 102206000A
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Abstract
The invention discloses application of an efficient dephosphorization agent in wastewater treatment. The efficient dephosphorization agent is prepared from the following components by weight percent: 20-30% of aluminum sulfate, 20-30% of ferric sulfate, 10-20% of sodium hypochlorite and 30-40% of water. According to the invention, municipal sewage and industrial sewage are treated by using the efficient dephosphorization agent, and the phosphorus-removing effect is above three times more than that of the traditional water treatment chemicals; the efficient dephosphorization agent has obvious auxiliary effects in the aspects of sterilization, deodorization and water removal from foam, float mud and filthy mud; a good technical support is provided for filthy mud reduction in production operation; and good environment effects are obtained.
Description
Technical field
The invention belongs to water treatment field, be specifically related to the application of a kind of high efficiency dephosphorating agent in wastewater treatment.
Background technology
Because The development in society and economy causes great destruction to physical environment, the urgent problem that global warming, Taihu Lake blue-green algae break out, the reasonable utilization of water resources and exploitation etc. all become current environment sustainable development.
Country handles at the Taihu Lake blue-green algae and has specified a series of measure and regulation, and the municipal sewage treatment of Taihu Lake bank is clearly stipulated the discharge index of phosphorus traditional biological treatment have been proposed great challenge; The technology of biochemical treatment has adapted to requirement rapidly, but traditional Water Treatment Chemicals DeGrain, dosage is big, processing cost is high and water quality is had a negative impact.
Summary of the invention
The objective of the invention is provides the application of a kind of high efficiency dephosphorating agent in wastewater treatment in order to overcome above-mentioned weak point.
The objective of the invention is to realize in the following manner:
The application of a kind of high efficiency dephosphorating agent in wastewater treatment, wherein, this high efficiency dephosphorating agent is made by following weight ratio ingredient:
Tai-Ace S 150 20～30%, ferric sulfate 20～30%, clorox 10～20%, water 30～40%.
This high efficiency dephosphorating agent is made by following weight ratio ingredient:
Tai-Ace S 150 20～25%, ferric sulfate 25～30%, clorox 15～20%, water 30～35%.
This high efficiency dephosphorating agent prepares by following steps:
Tai-Ace S 150 and ferric sulfate are dissolved in 40～50 ℃ water, add clorox several times and carry out polyreaction after 2～6 hours, be warming up to 75～85 ℃ of slakings 8～12 hours again, filter, obtain the high efficiency dephosphorating agent.Polymerization reaction time is preferably 3～4 hours.Curing temperature is low excessively not to reach the slaking requirement, reacts insufficient, and temperature is too high then to have other side reactions to take place, influence the performance of product easily, and increased the load of reaction vessel, shorten the life-span of reaction vessel, therefore curing temperature is chosen 75～85 ℃, is preferably 80 ℃.The aperture that filtration is passed through is preferably 200～800 orders.
High efficiency dephosphorating agent of the present invention can be used for the processing of municipal effluent, trade effluent.Add (solid elder generation thin up adds after stirring) after when wastewater treatment, stoste being diluted to respective concentration, the mode that can select former medicine directly to add for serious pollution waste water according to medicament character and water pollution degree.Add dosage mainly by the water pollution degree, add a little and lab scale situation decision, be generally every liter of waste water and add 10～150mg.
The principle of design of the high efficiency dephosphorating agent that the present invention adopts:
High efficiency dephosphorating agent of the present invention is a kind of novel, efficient, quick, low consumption, nontoxic inorganic polymer flocculant, have the advantage of several water treatment agents concurrently, chemical property is stable, molecular structure is huge, make full use of iron ion and aluminum ions mutual compensation performance, avoided the restriction of metal ion effectively the water purification agent use range.Its effective constituent is the multinuclear high price complex ion that Fe, Al etc. form, and main component is a PAFS.
These multinuclears high price complex ions are to electronegative phosphate radical, hydrogen phosphate, and dihydrogen phosphate produces the association adsorption, forms water-soluble low ionic associate.In hydrolytic process, form a large amount of oxyhydroxide flco precipitations, there is very big specific surface area its inside, has very strong adsorptive power, can adsorb a part of free phosphorus, organophosphorus and compound thereof, simultaneously also can net during the flco precipitation catch volume and sweep the phosphorus of a part of non-solubility, thereby reach certain phosphor-removing effect.
Fe in the dephosphorization agent of the present invention
3+, Al
3+Can also replace phosphatic low price positively charged ion in the water body Deng the high price positively charged ion, chemical reaction also can take place in the phosphorus that is dissolved in fully in the water body, generation is insoluble in the complex compound and the water-fast salt of water, and there is very strong adsorption on the complex compound surface that generates, can remove more phosphorus by this adsorption.
In addition, observe by straight-forward phenomenon, this product is all having obvious complementary effect aspect deodorization and sterilization, foam and mud scum, the sludge dewatering.
After the dispensing point of high efficiency dephosphorating agent the best of the present invention is typically chosen in biochemical treatment, best results, the medicine consumption is economized most, and is minimum to the influence of water quality generation simultaneously; The water pollution degree is higher when more difficult, can be chosen in or multi-point adding medicaments such as chemical treatment in Chemical Pretreatment before the biological treatment, the biological treatment process, biological treatment back chemical treatment at 2, can guarantee the water outlet qualified discharge.
High efficiency dephosphorating agent of the present invention (preparing according to embodiment 1 method) and traditional water treatment agent result of use are compared.Add a little: the water side, aeration tank, usually after biochemical treatment; Dosing method: stoste is diluted to the diluent of 20% concentration earlier, makes medicament be uniformly dispersed, fully react with water, the back that stirs adds in the waste water.Concrete experimental result is as shown in table 1.By data as can be known: compare with bodied ferric sulfate, polymerize aluminum chloride, phosphor-removing effect is their 3 times, and under identical phosphor-removing effect, high efficiency dephosphorating agent dosage of the present invention only is 1/3rd of bodied ferric sulfate, a polymerize aluminum chloride consumption, the generation of mud and the cost of processing mud have been significantly reduced, provide technical support preferably to the mud decrement in the production run, obtained good benefits in environment.
Table 1 phosphor-removing effect simultaneous test data sheet
| The medicament title | Dosage (mg/L) | Former water Tp (mg/L) | Water outlet Tp (mg/L) after the dosing | Total tp removal rate (%) |
| The high efficiency dephosphorating agent | 40.0 | 1.59 | 1.03 | 35.22 |
| Bodied ferric sulfate | 120.0 | 1.59 | 1.09 | 31.45 |
| Polymerize aluminum chloride | 120.0 | 1.59 | 1.08 | 32.08 |
| The high efficiency dephosphorating agent | 60.0 | 1.59 | 0.75 | 52.83 |
| Bodied ferric sulfate | 180.0 | 1.59 | 0.78 | 50.94 |
| Polymerize aluminum chloride | 180.0 | 1.59 | 0.80 | 49.69 |
| The high efficiency dephosphorating agent | 80.0 | 1.59 | 0.47 | 70.44 |
| Bodied ferric sulfate | 240.0 | 1.59 | 0.50 | 68.55 |
| Polymerize aluminum chloride | 240.0 | 1.59 | 0.49 | 69.18 |
The high efficiency dephosphorating agent performance data table that table 2 the present invention adopts
From table 1 and table 2 data as can be seen, the present invention uses the high efficiency dephosphorating agent and carries out wastewater treatment, and its phosphor-removing effect is more than 3 times of traditional Water Treatment Chemicals, can be good at adapting to and meeting the need of market.Still be aspect the cost performance at phosphor-removing effect no matter, high efficiency dephosphorating agent of the present invention all is better than other products in the same industry.
Using high efficiency dephosphorating agent of the present invention compares with traditional polymerize aluminum chloride/iron product and technology and has following advantage:
1, directly the dephosphorization chemical cost reduces at least 20%;
2, dosage is the 1/3-1/4 of polymerize aluminum chloride/iron only, greatly reduces chemical and adds influence to raw water quality, has reduced the generation and the intractability of mud simultaneously;
3, dephosphorization agent of the present invention shows that in waste water treatment applications this product does not have the obvious suppression effect to the biological nitration bacterium, being mainly reflected in does not have the significance influence to water quality (as PH, colourity etc.) and biochemical system, has eliminated in polymerize aluminum chloride/iron the chlorine root to the toxic action of biological nitration bacterium.
Embodiment
By the following examples the present invention is further set forth:
Embodiment 1
Get Tai-Ace S 150 22.5%, ferric sulfate 27.5%, clorox 17.5%, water 32.5%.
In reactor, press formula ratio and add tap water, open electronic stirring, be heated to 40 ℃, add solid sulphuric acid aluminium, ferric sulfate, stirring and dissolving is complete, adds clorox several times and carries out polyreaction, reacts after 4 hours, be warming up to 80 ℃ of stable slakings 12 hours again, 400 order mylars filter the transparent liquid product.
Embodiment 2
Get Tai-Ace S 150 30%, ferric sulfate 20%, clorox 15%, water 35%.
In reactor, press formula ratio and add tap water, open electronic stirring, be heated to 45 ℃, add solid sulphuric acid aluminium, ferric sulfate, stirring and dissolving is complete, adds clorox several times and carries out polyreaction, reacts after 4 hours, be warming up to 85 ℃ of stable slakings 12 hours again, 400 order mylars filter the transparent liquid product.Liquid product drying machine oven dry back is pulverized and is promptly got the agent of solid granular high efficiency dephosphorating.Add during wastewater treatment a little: the water side, aeration tank; Dosing method: be diluted to the diluent of 20% concentration earlier, make medicament be uniformly dispersed, fully react with water, the back that stirs adds in the waste water.
| Dosage (mg/L) | Former water Tp (mg/L) | Water outlet Tp (mg/L) after the dosing | Total tp removal rate (%) |
| 40.0 | 1.59 | 1.05 | 33.96 |
Embodiment 3
Get Tai-Ace S 150 25%, ferric sulfate 25%, clorox 17.5%, water 32.5%.
In reactor, press formula ratio and add tap water, open electronic stirring, be heated to 50 ℃, add solid sulphuric acid aluminium, ferric sulfate, stirring and dissolving is complete, adds clorox several times and carries out polyreaction, reacts after 6 hours, be warming up to 85 ℃ of stable slakings 8 hours again, 400 order mylars filter the transparent liquid product.Add during wastewater treatment a little: the water side, aeration tank; Dosing method: be diluted to the diluent of 20% concentration earlier, make medicament be uniformly dispersed, fully react with water, the back that stirs adds in the waste water.
| Dosage (mg/L) | Former water Tp (mg/L) | Water outlet Tp (mg/L) after the dosing | Total tp removal rate (%) |
| 40.0 | 1.59 | 1.02 | 35.84 |
Embodiment 4
Get Tai-Ace S 150 20%, ferric sulfate 20%, clorox 20%, water 40%.
In reactor, press formula ratio and add tap water, open electronic stirring, be heated to 40 ℃, add solid sulphuric acid aluminium, ferric sulfate, stirring and dissolving is complete, adds clorox several times and carries out polyreaction, reacts after 4 hours, be warming up to 80 ℃ of stable slakings 12 hours again, 400 order mylars filter the transparent liquid product.Add during wastewater treatment a little: the water side, aeration tank; Dosing method: be diluted to the diluent of 20% concentration earlier, make medicament be uniformly dispersed, fully react with water, the back that stirs adds in the waste water.
| Dosage (mg/L) | Former water Tp (mg/L) | Water outlet Tp (mg/L) after the dosing | Total tp removal rate (%) |
| 40.0 | 1.59 | 1.04 | 34.59 |
Embodiment 5
Get Tai-Ace S 150 20%, ferric sulfate 30%, clorox 20%, water 30%.
In reactor, press formula ratio and add tap water, open electronic stirring, be heated to 45 ℃, add solid sulphuric acid aluminium, ferric sulfate, stirring and dissolving is complete, adds clorox several times and carries out polyreaction, reacts after 4 hours, be warming up to 85 ℃ of stable slakings 12 hours again, 400 order mylars filter the transparent liquid product.Crush and screen after the oven dry of liquid product drying machine and promptly get the agent of solid granular high efficiency dephosphorating.Add during wastewater treatment a little: the water side, aeration tank, usually after biochemical treatment; Dosing method: be diluted to the diluent of 20% concentration earlier, make medicament be uniformly dispersed, fully react with water, the back that stirs adds in the waste water.
| Dosage (mg/L) | Former water Tp (mg/L) | Water outlet Tp (mg/L) after the dosing | Total tp removal rate (%) |
| 40.0 | 1.59 | 1.02 | 35.84 |
Claims (6)
1. the application of high efficiency dephosphorating agent in wastewater treatment, wherein, this high efficiency dephosphorating agent is made by following weight ratio ingredient: Tai-Ace S 150 20～30%, ferric sulfate 20～30%, clorox 10～20%, water 30～40%.
2. application according to claim 1 is characterized in that described high efficiency dephosphorating agent made by following weight ratio ingredient: Tai-Ace S 150 20～25%, ferric sulfate 25～30%, clorox 15～20%, water 30～35%.
3. application according to claim 1, it is characterized in that what described high efficiency dephosphorating agent prepared by following steps: Tai-Ace S 150 and ferric sulfate are dissolved in 40～50 ℃ water, add clorox several times and carry out polyreaction after 2～6 hours, be warming up to 75～85 ℃ of slakings 8～12 hours again, filter, obtain the high efficiency dephosphorating agent.
4. application according to claim 1 is characterized in that the high efficiency dephosphorating agent is used for the processing of municipal effluent, trade effluent.
5. application according to claim 1 is characterized in that this high efficiency dephosphorating agent adds dosage in wastewater treatment be that every liter of waste water adds 10～150mg.
6. application according to claim 1 is characterized in that this high efficiency dephosphorating agent will add or directly add with former medicine form after the former medicine dilution of high efficiency dephosphorating agent when wastewater treatment.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098166A (en) * | 2014-06-19 | 2014-10-15 | 杭州电子科技大学 | Pesticide wastewater dephosphorizing agent |
| CN106830433A (en) * | 2017-03-07 | 2017-06-13 | 苏州清控环保科技有限公司 | Ortho phosphorous acid method and removal agent prescription in one kind removal chemical nickle-plating wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040774A (en) * | 1988-08-26 | 1990-03-28 | 贵州省环境监测中心站 | Polymerization ferric chloride purifying agent and method for making thereof |
| CN1103628A (en) * | 1993-12-11 | 1995-06-14 | 李圭白 | Drinking water purifying technique with compound permanganate medicament |
| JP2002079003A (en) * | 2000-09-08 | 2002-03-19 | Ebara Corp | Inorganic flocculant using highly purified ferric salt and manufacturing method thereof and processing apparatus in water-purification processing |
| CN101696066A (en) * | 2009-10-29 | 2010-04-21 | 同济大学 | Method for removing organic pollutants from water by drinking water enhanced treatment |
-
2011
- 2011-04-25 CN CN 201110104033 patent/CN102206000B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040774A (en) * | 1988-08-26 | 1990-03-28 | 贵州省环境监测中心站 | Polymerization ferric chloride purifying agent and method for making thereof |
| CN1103628A (en) * | 1993-12-11 | 1995-06-14 | 李圭白 | Drinking water purifying technique with compound permanganate medicament |
| JP2002079003A (en) * | 2000-09-08 | 2002-03-19 | Ebara Corp | Inorganic flocculant using highly purified ferric salt and manufacturing method thereof and processing apparatus in water-purification processing |
| CN101696066A (en) * | 2009-10-29 | 2010-04-21 | 同济大学 | Method for removing organic pollutants from water by drinking water enhanced treatment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098166A (en) * | 2014-06-19 | 2014-10-15 | 杭州电子科技大学 | Pesticide wastewater dephosphorizing agent |
| CN104098166B (en) * | 2014-06-19 | 2016-06-01 | 杭州电子科技大学 | A kind of agricultural chemicals waste water dephosphorization agent |
| CN106830433A (en) * | 2017-03-07 | 2017-06-13 | 苏州清控环保科技有限公司 | Ortho phosphorous acid method and removal agent prescription in one kind removal chemical nickle-plating wastewater |
| CN106830433B (en) * | 2017-03-07 | 2020-06-30 | 苏州清控环保科技有限公司 | Method for removing hypophosphorous acid in chemical nickel plating wastewater and remover formula |
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