CN101333023A - Inorganic oxidability high molecular ferro-silicon coagulant, preparation process thereof and applications - Google Patents
Inorganic oxidability high molecular ferro-silicon coagulant, preparation process thereof and applications Download PDFInfo
- Publication number
- CN101333023A CN101333023A CNA200810015784XA CN200810015784A CN101333023A CN 101333023 A CN101333023 A CN 101333023A CN A200810015784X A CNA200810015784X A CN A200810015784XA CN 200810015784 A CN200810015784 A CN 200810015784A CN 101333023 A CN101333023 A CN 101333023A
- Authority
- CN
- China
- Prior art keywords
- rev
- ferro
- mins
- high molecular
- minutes
- 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
Images
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides an inorganic oxidizing macromolecular silicon iron coagulating agent, a preparation technique thereof and the application to water treatment. The coagulating agent is yellowish green or yellowish brown liquid or solid product, has low cost, good stability and oxidizing property and increases composite function and improves efficiency for eliminating turbidity, color, heavy metals, algae, organic matter, etc. The UV254 removal rate of the water of the Yellow River can reach 55%-80%, and the COD Mn removal rate can reach 75%-95%. For slaughtering wastewater, COD can drop below 100mg/L, chroma is lowered below 5 and phosphorus removal rate can reach 80%-98%. The preparation method of the coagulating agent adopts an oxidation and copolymerization method, has simple technique and equipment, short period and no secondary pollution and can be carried out at normal pressure and low temperature. The inorganic oxidizing macromolecular silicon iron coagulating agent of the invention is suitable for the treatment fields of municipal water supply and sewage as well as industrial water supply and wastewater and is especially suitable for low-temperature and low-turbidity water, the water of a micro-polluted water source or the industrial wastewater having high chroma and high organic content or containing refractory organic substances.
Description
Technical field
The present invention relates to inorganic oxidability high molecular ferro-silicon coagulant, its preparation technology and as the application of coagulating agent in water treatment.
Background technology
Aluminium salt, molysite are the special inorganic coagulating agent of water treatment field.Remaining aluminium has the cumulative bio-toxicity in the aluminium salt treating water, its mud can not reuse and the harmless treatment difficulty big, therefore nontoxic iron class coagulating agent at home and abroad water treatment field be used widely and develop rapidly, its development experience three phases: traditional molysite, inorganic polymer molysite, inorganic compounding polymer molysite.The inorganic high molecular silicon-iron coagulating agent is the last word in the molysite, it is the complex compound of silicon and iron, develop Japan in early 1990s, but all report with the patent form, this coagulating agent purifying water effect is good, the throwing amount less, but the settling of floccus performance is good, the pH scope of application is wide, nontoxic, mud farmland reuse etc., therefore becomes the research focus of domestic and international water treatment field.Mostly adopt two kinds of methods to prepare high molecular silicon-iron salt both at home and abroad: 1) composite algorithm is earlier with remix after the pre-hydroxylation of raw material difference hydrolysis; 2) copolymerization method is a common again hydrolysis hydroxylation after earlier raw material being mixed.The preparation target is the inorganic polymer form that forms hydroxylated more high-polymerization degree, to reach excellent water purification performance.Domesticly begin to study in this respect 20 end of the centurys.
Though at present more research has been carried out in aspects such as high molecular ferro-silicon coagulant preparation, performance, influence factor and form, product stability is still relatively poor, the raising of comprehensive depollution performance does not have the progress of breakthrough.For improving the multifunctionality of ferrosilicon salt coagulant, domestic CN1210818 (State Intellectual Property Office of the People's Republic of China) is to add oxygenant mode (as potassium permanganate or hydrogen peroxide etc.) preparation oxidation polysilacidiron, the interpolation of oxygenant makes this coagulating agent cost higher, causes industrialization to acquire a certain degree of difficulty.These defectives cause inorganic high molecular silicon-iron coagulating agent and oxidation modification agent thereof up to still not forming at present certain market scale.
Summary of the invention
The objective of the invention is to overcome the weak point that exists in the above-mentioned technology, provide a kind of stability better, and have the low-cost inorganic high molecular silicon-iron coagulating agent and the preparation technology thereof of oxidisability.
In order to achieve the above object, the technical solution used in the present invention is:
The component of inorganic oxidability high molecular ferro-silicon coagulant and content are (all percentage ratios are weight percentage):
Water glass 12.5%～24%
Water 33%～54%
Dilute sulphuric acid 12%～23%
Iron vitriol 9%～28%
Oxygenant 0.5%～1.9%
Stablizer 0.018%～0.35%
Used water glass silicon-dioxide quality content is 23%～28%, and modulus is 3.1～3.4, technical grade, liquid.
Used dilute sulphuric acid massfraction is 40%, technical grade, liquid.
Used iron vitriol is an industry byproduct, and all iron content is greater than 80%, solid.
Used oxygenant is a sodium chlorate, technical grade, solid.
Used stablizer is the mixed solution of sodium tartrate, hydrochloric acid and the clorox of technical grade, sodium tartrate: hydrochloric acid: clorox=1: 3: 7 (weight ratio).
The preparation technology who above-mentioned each component is made inorganic oxidability high molecular ferro-silicon coagulant of the present invention is:
A, the water glass with 12.5%～24% dilute with 33%～54% water.
B, be that 20 ℃～40 ℃ and stirring velocity are under 300 rev/mins～500 rev/mins the condition in temperature, the water glass of above-mentioned dilution joined in 3%～5% dilute sulphuric acid (40%) solution, control pH value is 1.5～3.5, stir and stop after 4 minutes, left standstill 1 hour～4 hours, make poly-silicic acid, stand-by.
C, be under 25 ℃～55 ℃ in temperature, the iron vitriol with 9%～28% joins in 9%～18% dilute sulphuric acid (40%) solution, stirs 10 minutes with 150 rev/mins～300 rev/mins speed, makes copperas solution.
D, be that 25 ℃～55 ℃ and stirring velocity are under 200 rev/mins～400 rev/mins the condition in temperature, stand-by poly-silicic acid is joined in the above-mentioned copperas solution, add 0.5%～1.9% sodium chlorate simultaneously, stop after 5 minutes stirring, make the inorganic oxidability high molecular ferro-silicon coagulant work in-process.
E, with above-mentioned inorganic oxidability high molecular ferro-silicon coagulant work in-process after leaving standstill 30 minutes under 25 ℃～55 ℃ temperature, under 100 rev/mins～200 rev/mins agitation condition, stablizer (the sodium tartrate: hydrochloric acid: clorox=1: 3: 7 (weight ratio)) of adding 0.018%～0.35%, stop after 5 minutes stirring, left standstill under the normal temperature 30 minutes～60 minutes, dilution makes tawny or yellowish green liquid product.
F, solidifying agent is joined in the above-mentioned undiluted liquid inorganic oxidability high molecular ferro-silicon coagulant, dry, pulverize, or do not add solidifying agent and dry naturally, pulverize, make tawny or yellowish green pulverulent solids product.
The stand-by poly-silicic acid of institute's synthetic is the poly-silicic acid of low polymerization degree among the preparation technology, and the polymerization degree is 6%～25%.
Advantage of the present invention is:
1, the present invention adopts and does not add oxygenant (as potassium permanganate or hydrogen peroxide etc.), but adopt oxidation high molecular silicon-iron salt to be carried out oxidation modification (oxidation here is meant with sodium chlorate oxidation of divalent is become ferric oxidising process) with the method (oxidation copolymerization method) that copolymerization is carried out simultaneously, preparation low cost and ferro-silicon coagulant with oxidisability, this coagulating agent belongs to the inorganic macromolecular composite coagulating agent, does not contain aluminium etc. to biological objectionable impurities.
2, inorganic oxidability high molecular ferro-silicon coagulant has oxidisability, has increased complex function, has improved the efficient of removing pollutents such as turbidity material, colourity, heavy metal, algae and organism.For Huanghe water, UV
254Clearance reaches 55%～80%, COD
MnClearance reaches 75%～95%.For slaughterhouse wastewater, COD drops to below the 100mg/L, and colourity drops to below 5, and dephosphorizing rate reaches 80%～98%.
3, the preparation raw material adopts Industrial products or industry byproduct, and is cheap, wide material sources.Oxygenant adopts the technical grade sodium chlorate that oxidation capacity is strong, oxidation rate is fast, and its acidic oxidation reduction potential is 1.21V, and consumption is few.
4, production technique of the present invention is simple, ripe, is easy to realize.
5, production process of the present invention adopts atmospheric low-temperature, and temperature of reaction kettle is 25 ℃～55 ℃; With short production cycle, be 2～5.5 hours; Churning time is short, and total churning time is 24 minutes, and energy consumption is low; The production process non-secondary pollution.
6, the preparation of solid phase prod of the present invention adopt to add to dry, to pulverize or not add solidifying agent behind the solidifying agent and dries naturally, pulverizes, and cost is low, is easy to apply.
7, the present invention can be applicable to city water and sewage, industrial water supply and field of waste water treatment, is particularly useful for low temperature and low turbidity water, micro-polluted source water or high chroma, high organic content or contains the trade effluent of hardly degraded organic substance.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment 1
The water glass of 20L is used the water dilution of 71L.In temperature is that 20 ℃～40 ℃ and stirring velocity are under 300 rev/mins～500 rev/mins the condition, and the water glass of dilution is joined in dilute sulphuric acid (40%) solution of 5L, and control pH value is 3.5, stir and stop after 4 minutes, left standstill 1 hour, and made poly-silicic acid, stand-by.In temperature is under 25 ℃～55 ℃, the iron vitriol of 60kg is joined in dilute sulphuric acid (40%) solution of 31L, stirs 10 minutes with 150 rev/mins～300 rev/mins speed, makes copperas solution.In temperature is that 25 ℃～55 ℃ and stirring velocity are under 200 rev/mins～400 rev/mins the condition, stand-by poly-silicic acid is joined in the above-mentioned copperas solution, the sodium chlorate that adds 3.5kg simultaneously stops after 5 minutes stirring, and makes the inorganic oxidability high molecular ferro-silicon coagulant work in-process.With these coagulating agent work in-process after leaving standstill 30 minutes under 25 ℃～55 ℃ temperature, under 100 rev/mins～200 rev/mins agitation condition, stablizer (the sodium tartrate: hydrochloric acid: clorox=1: 3: 7 (weight ratio)) that adds 0.04L, stop after 5 minutes stirring, left standstill under the normal temperature 30 minutes, dilution makes yellowish green liquid product.
Embodiment 2
The water glass of 20L is used the water dilution of 68L.In temperature is that 20 ℃～40 ℃ and stirring velocity are under 300 rev/mins～500 rev/mins the condition, and the water glass of dilution is joined in dilute sulphuric acid (40%) solution of 5L, and control pH value is 3, stir and stop after 4 minutes, left standstill 2 hours, and made poly-silicic acid, stand-by.In temperature is under 25 ℃～55 ℃, the iron vitriol of 30kg is joined in dilute sulphuric acid (40%) solution of 18L, stirs 10 minutes with 150 rev/mins～300 rev/mins speed, makes copperas solution.In temperature is that 25 ℃～55 ℃ and stirring velocity are under 200 rev/mins～400 rev/mins the condition, stand-by poly-silicic acid is joined in the above-mentioned copperas solution, the sodium chlorate that adds 1.7kg simultaneously stops after 5 minutes stirring, and makes the inorganic oxidability high molecular ferro-silicon coagulant work in-process.With these coagulating agent work in-process after leaving standstill 30 minutes under 25 ℃～55 ℃ temperature, under 100 rev/mins～200 rev/mins agitation condition, stablizer (the sodium tartrate: hydrochloric acid: clorox=1: 3: 7 (weight ratio)) that adds 0.14L, stop after 5 minutes stirring, left standstill under the normal temperature 40 minutes, dilution makes yellowish green liquid product.
Embodiment 3
The water glass of 20L is used the water dilution of 65L.In temperature is that 20 ℃～40 ℃ and stirring velocity are under 300 rev/mins～500 rev/mins the condition, and the water glass of dilution is joined in dilute sulphuric acid (40%) solution of 5L, and control pH value is 2, stir and stop after 4 minutes, left standstill 3 hours, and made poly-silicic acid, stand-by.In temperature is under 25 ℃～55 ℃, the iron vitriol of 16kg is joined in dilute sulphuric acid (40%) solution of 8.5L, stirs 10 minutes with 150 rev/mins～300 rev/mins speed, makes copperas solution.In temperature is that 25 ℃～55 ℃ and stirring velocity are 200 to change under the condition of part clock～400 rev/min, stand-by poly-silicic acid is joined in the above-mentioned copperas solution, the sodium chlorate that adds 0.9kg simultaneously stops after 5 minutes stirring, and makes the inorganic oxidability high molecular ferro-silicon coagulant work in-process.With these coagulating agent work in-process after leaving standstill 30 minutes under 25 ℃～55 ℃ temperature, under 100 rev/mins～200 rev/mins agitation condition, stablizer (the sodium tartrate: hydrochloric acid: clorox=1: 3: 7 (weight ratio)) that adds 0.26L, stop after 5 minutes stirring, left standstill under the normal temperature 50 minutes, dilution makes filemot liquid product.
Embodiment 4
The water glass of 20L is used the water dilution of 60L.In temperature is that 20 ℃～40 ℃ and stirring velocity are under 300 rev/mins～500 rev/mins the condition, and the water glass of dilution is joined in dilute sulphuric acid (40%) solution of 5L, and control pH value is 1.5, stir and stop after 4 minutes, left standstill 4 hours, and made poly-silicic acid, stand-by.In temperature is under 25 ℃～55 ℃, the iron vitriol of 10kg is joined in dilute sulphuric acid (40%) solution of 4.5L, stirs 10 minutes with 150 rev/mins～300 rev/mins speed, makes copperas solution.In temperature is that 25 ℃～55 ℃ and stirring velocity are under 200 rev/mins～400 rev/mins the condition, stand-by poly-silicic acid is joined in the above-mentioned copperas solution, the sodium chlorate that adds 0.5kg simultaneously stops after 5 minutes stirring, and makes the inorganic oxidability high molecular ferro-silicon coagulant work in-process.With these coagulating agent work in-process after leaving standstill 30 minutes under 25 ℃～55 ℃ temperature, under 100 rev/mins～200 rev/mins agitation condition, stablizer (the sodium tartrate: hydrochloric acid: clorox=1: 3: 7 (weight ratio)) that adds 0.4L, stop after 5 minutes stirring, left standstill under the normal temperature 60 minutes, and made filemot liquid product.
The water glass of 20L is used the water dilution of 71L.In temperature is that 20 ℃～40 ℃ and stirring velocity are under 300 rev/mins～500 rev/mins the condition, and the water glass of dilution is joined in dilute sulphuric acid (40%) solution of 5L, and control pH value is 3.5, stir and stop after 4 minutes, left standstill 1 hour, and made poly-silicic acid, stand-by.In temperature is under 25 ℃～55 ℃, the iron vitriol of 60kg is joined in dilute sulphuric acid (40%) solution of 31L, stirs 10 minutes with 150 rev/mins～300 rev/mins speed, makes copperas solution.In temperature is that 25 ℃～55 ℃ and stirring velocity are under 200 rev/mins～400 rev/mins the condition, stand-by poly-silicic acid is joined in the above-mentioned copperas solution, the sodium chlorate that adds 3.5kg simultaneously stops after 5 minutes stirring, and makes the inorganic oxidability high molecular ferro-silicon coagulant work in-process.With these coagulating agent work in-process after leaving standstill 30 minutes under 25 ℃～55 ℃ temperature, under 100 rev/mins～200 rev/mins agitation condition, stablizer (the sodium tartrate: hydrochloric acid: clorox=1: 3: 7 (weight ratio)) that adds 0.04L, stop after 5 minutes stirring, left standstill under the normal temperature 30 minutes, and added solidifying agent then, dry, pulverize, make yellowish green pulverulent solids product.
Embodiment 6
The water glass of 20L is used the water dilution of 68L.In temperature is that 20 ℃～40 ℃ and stirring velocity are under 300 rev/mins～500 rev/mins the condition, and the water glass of dilution is joined in dilute sulphuric acid (40%) solution of 5L, and control pH value is 3, stir and stop after 4 minutes, left standstill 2 hours, and made poly-silicic acid, stand-by.In temperature is under 25 ℃～55 ℃, the iron vitriol of 30kg is joined in dilute sulphuric acid (40%) solution of 18L, stirs 10 minutes with 150 rev/mins～300 rev/mins speed, makes copperas solution.In temperature is that 25 ℃～55 ℃ and stirring velocity are under 200 rev/mins～400 rev/mins the condition, stand-by poly-silicic acid is joined in the above-mentioned copperas solution, the sodium chlorate that adds 1.7kg simultaneously stops after 5 minutes stirring, and makes the inorganic oxidability high molecular ferro-silicon coagulant work in-process.With these coagulating agent work in-process after leaving standstill 30 minutes under 25 ℃～55 ℃ temperature, under 100 rev/mins～200 rev/mins agitation condition, stablizer (the sodium tartrate: hydrochloric acid: clorox=1: 3: 7 (weight ratio)) that adds 0.14L, stop after 5 minutes stirring, left standstill under the normal temperature 40 minutes, naturally dry then, pulverize, make yellowish green pulverulent solids product.
Embodiment 7
The water glass of 20L is used the water dilution of 65L.In temperature is that 20 ℃～40 ℃ and stirring velocity are under 300 rev/mins～500 rev/mins the condition, and the water glass of dilution is joined in dilute sulphuric acid (40%) solution of 5L, and control pH value is 2, stir and stop after 4 minutes, left standstill 3 hours, and made poly-silicic acid, stand-by.In temperature is under 25 ℃～55 ℃, the iron vitriol of 16kg is joined in dilute sulphuric acid (40%) solution of 8.5L, stirs 10 minutes with 150 rev/mins～300 rev/mins speed, makes copperas solution.In temperature is that 25 ℃～55 ℃ and stirring velocity are under 200 rev/mins～400 rev/mins the condition, stand-by poly-silicic acid is joined in the above-mentioned copperas solution, the sodium chlorate that adds 0.9kg simultaneously stops after 5 minutes stirring, and makes the inorganic oxidability high molecular ferro-silicon coagulant work in-process.With these coagulating agent work in-process after leaving standstill 30 minutes under 25 ℃～55 ℃ temperature, under 100 rev/mins～200 rev/mins agitation condition, stablizer (the sodium tartrate: hydrochloric acid: clorox=1: 3: 7 (weight ratio)) that adds 0.26L, stop after 5 minutes stirring, left standstill under the normal temperature 50 minutes, and added solidifying agent then, dry, pulverize, make filemot pulverulent solids product.
Embodiment 8
The water glass of 20L is used the water dilution of 60L.In temperature is that 20 ℃～40 ℃ and stirring velocity are under 300 rev/mins～500 rev/mins the condition, and the water glass of dilution is joined in dilute sulphuric acid (40%) solution of 5L, and control pH value is 1.5, stir and stop after 4 minutes, left standstill 4 hours, and made poly-silicic acid, stand-by.In temperature is under 25 ℃～55 ℃, the iron vitriol of 10kg is joined in dilute sulphuric acid (40%) solution of 4.5L, stirs 10 minutes with 150 rev/mins～300 rev/mins speed, makes copperas solution.In temperature is that 25 ℃～55 ℃ and stirring velocity are under 200 rev/mins～400 rev/mins the condition, stand-by poly-silicic acid is joined in the above-mentioned copperas solution, the sodium chlorate that adds 0.5kg simultaneously stops after 5 minutes stirring, and makes the inorganic oxidability high molecular ferro-silicon coagulant work in-process.With these coagulating agent work in-process after leaving standstill 30 minutes under 25 ℃～55 ℃ temperature, under 100 rev/mins～200 rev/mins agitation condition, stablizer (the sodium tartrate: hydrochloric acid: clorox=1: 3: 7 (weight ratio)) that adds 0.4L, stop after 5 minutes stirring, left standstill under the normal temperature 60 minutes, naturally dry then, pulverize, make filemot pulverulent solids product.
The microscopic property and the coagulation performance of the inorganic oxidability high molecular ferro-silicon coagulant of oxidation copolymerization method preparation are seen accompanying drawing.
Fig. 1 is the TEM figure of the inorganic oxidability high molecular ferro-silicon coagulant of oxidation copolymerization method preparation.
Fig. 2 is the SEM figure of the solid inorganic oxidability high molecular ferro-silicon coagulant of oxidation copolymerization method preparation.
Fig. 3 is the IR spectrogram of the inorganic oxidability high molecular ferro-silicon coagulant of oxidation copolymerization method preparation.
Fig. 4 is the influence of the time of repose of the heavy back of coagulation water to remaining humic acid concentration.
Fig. 5 is that product of the present invention and compound ferro-aluminum contrast the slaughterhouse wastewater coagulation effect.
Fig. 1 shows that the inorganic oxidability high molecular ferro-silicon coagulant form of preparation comprises the chain nodular species of very thin wire and dispersion, when multiplication factor increases (* 100000), can clearly observe the chelating situation of poly-silicic acid and iron.
Fig. 2 shows that the surface topography of the solid inorganic oxidability high molecular ferro-silicon coagulant of preparation forms by laminated structure or by the very strong radial nano whisker of many directionality, and alters a great deal with silicon/iron mol ratio. Find out that by the silicon among Fig. 2/iron mol ratio=3 picture is darker, and band is arranged, illustrating is not having in the situation of oil gidling, and this sample poor electric conductivity produces electric discharge phenomena, proves that charge density descends along with silicon/iron mol ratio increases.
Among Fig. 3,974cm-1About the peak represent the Si-O-Fe key, illustrate that iron and poly-silicic acid all participated in polymerisation, formed copolymer, rather than simple raw material mixes or the product of the independent autohemagglutination of each raw material.
What the coagulation experiment of Fig. 4 adopted is humic acid simulation water distribution, and water quality is as follows: 25 ℃ of temperature, UV2540.304～0.457cm
-1, turbidity 11～28 NTU, DOC10.19～11.93mg/L, pH 7.54. Dosage 0.322mmol/L, dispensing concentration 0.18mmolg/L (product of the present invention is in iron, and compound ferro-aluminum is in aluminium). Fig. 4 shows, the UV of water after the initial stage of leaving standstill product inorganic oxidability high molecular ferro-silicon coagulant of the present invention coagulation is heavy254Value sharply increases, subsequently rapid decrease. And for now widely used compound ferro-aluminum, the UV of water after its coagulation is heavy254Prolongation with time of repose is almost constant, and former water is also very stable. This proof inorganic oxidability high molecular ferro-silicon coagulant has very strong oxidisability, thereby has changed organic surface nature, and its autohemagglutination ability is strengthened, and produces the flco precipitation, and compound ferro-aluminum non-oxidative or oxidisability extremely a little less than. Measure through the oxidation-reduction potential instrument in addition, the oxidation-reduction potential of inorganic oxidability high molecular ferro-silicon coagulant of the present invention (ORP value) is greater than 800mV, and compound ferro-aluminum only is about 300mV, and this oxidisability that further proves inorganic oxidability high molecular ferro-silicon coagulant is very strong. The coagulation effect example is as follows:
Product of the present invention has excellent comprehensive depollution performance, is especially removing colourity, UV254Fig. 5 is seen in the coagulation effect contrast of the remarkable product of the present invention of aspect effect such as (dissolved organic matter), permanganate indices, heavy metal and phosphorus and compound ferro-aluminum.
Slaughtering wastewater water quality: 1000～1500 times of colourities, 18.5 ℃ of temperature, turbidity 30～70NTU, CODMn
7.35mg/L，pH7.43～8.18，COD
Cr814～1227NTU. Dosage 1.074mmol/L, dispensing concentration 0.18mmolg/L (product of the present invention is in iron, and compound ferro-aluminum is in aluminium).
Claims (8)
1, a kind of inorganic oxidability high molecular ferro-silicon coagulant, its component and content are (all percentage ratios are weight percentage):
Water glass 12.5%～24%
Water 33%～54%
Dilute sulphuric acid 12%～23%
Iron vitriol 9%～28%
Oxygenant 0.5%～1.9%
Stablizer 0.018%～0.35%
2, inorganic oxidability high molecular ferro-silicon coagulant according to claim 1 is characterized in that used water glass silicon-dioxide quality content is 23%～28%, and modulus is 3.1～3.4, technical grade, liquid.
3, inorganic oxidability high molecular ferro-silicon coagulant according to claim 1 is characterized in that used dilute sulphuric acid massfraction is 40%, technical grade, liquid.
4, inorganic oxidability high molecular ferro-silicon coagulant according to claim 1 is characterized in that used iron vitriol is an industry byproduct, and all iron content is greater than 80%, solid.
5, inorganic oxidability high molecular ferro-silicon coagulant according to claim 1 is characterized in that used oxygenant is a sodium chlorate, technical grade, solid.
6, inorganic oxidability high molecular ferro-silicon coagulant according to claim 1 is characterized in that used stablizer is the mixed solution of sodium tartrate, hydrochloric acid and the clorox of technical grade, sodium tartrate: hydrochloric acid: clorox=1: 3: 7 (weight ratio).
7, the preparation technology of inorganic oxidability high molecular ferro-silicon coagulant according to claim 1, this technology comprises the steps: successively
A, the water glass with 12.5%～24% dilute with 33%～54% water.
B, be that 20 ℃～40 ℃ and stirring velocity are under 300 rev/mins～500 rev/mins the condition in temperature, the water glass of above-mentioned dilution joined in 3%～5% dilute sulphuric acid (40%) solution, control pH value is 1.5～3.5, stir and stop after 4 minutes, left standstill 1 hour～4 hours, make poly-silicic acid, stand-by.
C, be under 25 ℃～55 ℃ in temperature, the iron vitriol with 9%～28% joins in 9%～18% dilute sulphuric acid (40%) solution, stirs 10 minutes with 150 rev/mins～300 rev/mins speed, makes copperas solution.
D, be that 25 ℃～55 ℃ and stirring velocity are under 200 rev/mins～400 rev/mins the condition in temperature, stand-by poly-silicic acid is joined in the above-mentioned copperas solution, add 0.5%～1.9% sodium chlorate simultaneously, stop after 5 minutes stirring, make the inorganic oxidability high molecular ferro-silicon coagulant work in-process.
E, with above-mentioned inorganic oxidability high molecular ferro-silicon coagulant work in-process after leaving standstill 30 minutes under 25 ℃～55 ℃ temperature, under 100 rev/mins～200 rev/mins agitation condition, stablizer (the sodium tartrate: hydrochloric acid: clorox=1: 3: 7 (weight ratio)) of adding 0.018%～0.35%, stop after 5 minutes stirring, left standstill under the normal temperature 30 minutes～60 minutes, dilution makes tawny or yellowish green liquid product.
F, solidifying agent is joined in the above-mentioned undiluted liquid inorganic oxidability high molecular ferro-silicon coagulant, dry, pulverize, or do not add solidifying agent and dry naturally, pulverize, make tawny or yellowish green pulverulent solids product.
8, the preparation technology of inorganic oxidability high molecular ferro-silicon coagulant according to claim 7 is characterized in that the stand-by poly-silicic acid of institute's synthetic is the poly-silicic acid of low polymerization degree, and the polymerization degree is 6%～25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810015784XA CN101333023B (en) | 2008-05-07 | 2008-05-07 | Inorganic oxidability high molecular ferro-silicon coagulant, preparation process thereof and applications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810015784XA CN101333023B (en) | 2008-05-07 | 2008-05-07 | Inorganic oxidability high molecular ferro-silicon coagulant, preparation process thereof and applications |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101333023A true CN101333023A (en) | 2008-12-31 |
| CN101333023B CN101333023B (en) | 2011-11-02 |
Family
ID=40195947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810015784XA Expired - Fee Related CN101333023B (en) | 2008-05-07 | 2008-05-07 | Inorganic oxidability high molecular ferro-silicon coagulant, preparation process thereof and applications |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101333023B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985373A (en) * | 2010-11-30 | 2011-03-16 | 常州大学 | Coagulant for removing algae and preparation method thereof |
| CN103193335A (en) * | 2013-03-14 | 2013-07-10 | 济南大学 | Oxidative poly-Si-Fe and ultrafiltration membrane combined drinking water treatment method |
| CN104817147A (en) * | 2015-04-10 | 2015-08-05 | 济南大学 | Preparation method of high-molecular ferro-silicon-calcium coagulant used for water treatment |
| CN104817148A (en) * | 2015-04-10 | 2015-08-05 | 济南大学 | Poly ferro-silicon-titanium coagulant used for treating low-sludge amount water and preparation technology thereof |
-
2008
- 2008-05-07 CN CN200810015784XA patent/CN101333023B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985373A (en) * | 2010-11-30 | 2011-03-16 | 常州大学 | Coagulant for removing algae and preparation method thereof |
| CN103193335A (en) * | 2013-03-14 | 2013-07-10 | 济南大学 | Oxidative poly-Si-Fe and ultrafiltration membrane combined drinking water treatment method |
| CN103193335B (en) * | 2013-03-14 | 2014-12-17 | 济南大学 | Oxidative poly-Si-Fe and ultrafiltration membrane combined drinking water treatment method |
| CN104817147A (en) * | 2015-04-10 | 2015-08-05 | 济南大学 | Preparation method of high-molecular ferro-silicon-calcium coagulant used for water treatment |
| CN104817148A (en) * | 2015-04-10 | 2015-08-05 | 济南大学 | Poly ferro-silicon-titanium coagulant used for treating low-sludge amount water and preparation technology thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101333023B (en) | 2011-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104085969B (en) | Spent acid is utilized to produce the method for compound polynary flocculant poly silicic acid chloro sulphuric acid ferro-aluminum | |
| CN100554177C (en) | A kind of preparation method of polymerized ferric-aluminum chloride composite coagulating agent | |
| CN100387531C (en) | Oxidation polysilacidiron coagulant and preparation thereof | |
| CN104709992B (en) | A kind of phosphoric polyferric sulfate flocculant and its preparation method and application | |
| CN101791534B (en) | Phosphorus-removing adsorbent and preparation method thereof | |
| CN105036269B (en) | A kind of multiple-effect water treatment agent and preparation method thereof and method for treating water | |
| CN101734780A (en) | Oxidization coagulant for treating coking wastewater | |
| CN105523620B (en) | A kind of ferric sulfate of polymerized silica base inorganic-organic composite flocculating agent and preparation method thereof | |
| CN101805051A (en) | Compound phosphoric polyferric sulfate flocculant and production method thereof | |
| Lin et al. | Deep mechanism of enhanced dewaterability of residual sludge by Na+: comprehensive analyses of intermolecular forces, hydrophilicity and water-holding capacity of EPS | |
| CN101531413A (en) | Novel compositing and flocculating method for environment-friendly compound flocculating agent | |
| CN103991941A (en) | Compound chemical phosphorus removal agent for sewage and preparation method thereof | |
| CN101333023B (en) | Inorganic oxidability high molecular ferro-silicon coagulant, preparation process thereof and applications | |
| CN111003910A (en) | Method for treating waste sulfonated mud from drilling | |
| CN101717123B (en) | Method for preparing modified poly-ferric chloride coagulant | |
| CN101085686A (en) | High efficiency water purification agent | |
| CN101734772A (en) | Composite flocculant for treating industrial waste water and preparation method | |
| CN108083400A (en) | A kind of preparation method of phosphorous polyiron sulfate and its application for handling coking wastewater | |
| CN109928473A (en) | A kind of composite water purifying efficient flocculant preparation process | |
| CN105036218A (en) | Environment-friendly sewage treatment agent and preparation method thereof | |
| CN102515320B (en) | Oxidation-coagulation agent | |
| CN106587314A (en) | Efficient phosphorus removal agent and preparation method thereof | |
| CN101525173B (en) | Oxygenation and dimethyl diallyl ammonium chloride composite modification silicoferrite coagulating agent and preparation method thereof | |
| CN1958462A (en) | Method for preparing potassium ferrate by using waste liquid from acid washing steel | |
| CN110282715A (en) | A kind of preparation and application of polyquaternium In-situ reaction improved PFS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20120507 |