CN101343090B - Lanthanide series water treatment agent and method of preparing the same - Google Patents
Lanthanide series water treatment agent and method of preparing the same Download PDFInfo
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- CN101343090B CN101343090B CN2008103041332A CN200810304133A CN101343090B CN 101343090 B CN101343090 B CN 101343090B CN 2008103041332 A CN2008103041332 A CN 2008103041332A CN 200810304133 A CN200810304133 A CN 200810304133A CN 101343090 B CN101343090 B CN 101343090B
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Abstract
The invention relates to a lanthanide water treatment agent as well as a preparation method thereof, which is a novel water treatment agent. The chemical compositions of the agent are: a La2O3.b CeO2.c Pr6O11.d Nd2O3.e SiO2.f Al2O3.g MgO and a small quantity of unavoidable impurities, wherein, numeric areas of coefficients of a, b, c, d, e, f and g are respectively: 0.20<=a<=0.35, 0.32<=b<=0.55, 0<=c<=0.035, 0<=d<=0.035, 0.10<=e<=0.30, 0.03<=f<=0.09, 0.010<=g<=0.014. The water treatment agent can eliminate the organic pollution in water and can also eliminate most of inorganic pollution, and can treat general pollution and eliminate or inhibit the growth and reproduction of blue algae, green algae and red tide. The water treatment agent and the preparation method are favorable for treating the pollution of reservoirs, lakes, ponds and rivers with slow velocity of flow and for restoring the water ecological environment, and can also treat drinking water, culture water, irrigation water, landscape water, industrial wastewater, domestic wastewater, etc.
Description
Technical field
The present invention relates to a kind of novel water conditioner, relate in particular to the water conditioner that contains lanthanon, belong to water-treatment technology field.
Background technology
It is to adopt the whole bag of tricks that the separated from contaminants that is contained in the contaminated water is come out that polluted water is handled, or is translated into harmless and stable material, thereby polluted-water is purified.Press the action principle of sewage disposal technology, can be divided into following three major types: one, physical treatment method mainly is to utilize methods such as filtration, precipitation, flotation to remove suspended substance.Two, chemical treatment method comprises methods such as neutralization, oxidation, chemical coagulation, electrolysis-coagulation, ion-exchange.Three, bioremediation is utilized the biochemical action in the microbial life moving process, is harmless simple material with the harmful organic substance decomposition and inversion, reaches the purpose of purification of waste water.
Common several improvement water pollution technology have: the biological-ecological recovery technique, and microbial technique, membrane separation technique is thrown in chemical agent, anaerobism technology, SAF technology of waste water control, stability chlorine dioxide technology, SPR sewage purification technology etc.Because sanitary sewage, industrial sewage and aquaculture water, irrigation water body, landscape water body and the pollutent of drinking in the water body are varied, when practice pollution treatment way, often need to handle, in the hope of reaching the degree of ideal process by the treatment system of forming by several method.
Press for a kind of effective and safe water conditioner at present, can handle poisonous and hazardous organism, chemical substance, heavy metal and nitrogen, phosphorus etc. in the water body simultaneously, and can eliminate or suppress poisonous and harmful algae such as blue-green algae, green alga and red tide simultaneously.
Summary of the invention
Technical problem to be solved by this invention is: biological-ecological recovery technique, microbial technique, anaerobism technology are combined, provide a kind of can be simultaneously to the pollutent in the water body, subdued and removed such as poisonous and hazardous organism, chemical substance, heavy metal and nitrogen, phosphorus etc., can be eliminated or suppress simultaneously the water conditioner of the growth and breeding of blue-green algae, green alga and red tide etc. and the algae toxin of degrading thereof etc.
The chemical constitution of water conditioner of the present invention is:
A La
2O
3B CeO
2C Pr
6O
11D Nd
2O
3E SiO
2F Al
2O
3G MgO and a small amount of unavoidable impurities, wherein the span of coefficient a, b, c, d, e, f, g is:
0.20≤a≤0.35、0.32≤b≤0.55、0≤c≤0.035、0≤d≤0.035、0.10≤e≤0.30、0.03≤f≤0.09、0.010≤g≤0.014；
Wherein, the span of a, b, c, d, e, f, g is preferably:
0.20≤a≤0.25、0.32≤b≤0.40、0.019≤c≤0.025、0.021≤d≤0.030、0.15≤e≤0.20、0.04≤f≤0.05、0.011≤g≤0.013；
Optimum is: a=0.22, b=0.33, c=0.024, d=0.028, e=0.18, f=0.045, g=0.012.
Still has good water treatment capacity after adding at least a trace element among the present invention as Sm, Eu, Gd etc.Elements such as Sm, Eu, Gd account for the lanthanide series water treatment agent gross weight below 0.0001%.
Owing to need to change into other biology when activating element such as nitrogen phosphorus for the processing of body eutrophication, growth and breeding was grown soon and is strengthened when these biological growth and developments participated at elements such as iron, calcium, potassium.Therefore, also can add trace elements such as iron, calcium, potassium in the sewage-treating agent of the present invention.Add-on is in the water conditioner total amount, and iron, calcium, potassium total amount are no more than 2.5%.
Second technical problem to be solved of the present invention provides the preparation method of above-mentioned sewage-treating agent, and the inventive method may further comprise the steps:
Add salpeter solution in a, oxide compound, oxyhydroxide or the salt by calculated amount preparation La, Ce, Pr, Nd, stirring is dissolved material fully; The concentration of nitric acid is 60-70%, presses the weight by volume 1 of alkali cake and nitric acid: 2.2-2.5;
B, heat temperature raising add magnesium oxide while stirring and contain SiO to 90-100 ℃
2And Al
2O
3Material reaction 40-60 minute, nitrate decomposes emits O
2, NO and NO
2
C, reaction solution concentrate, crystallization, drying, be ground to product and cross 60 order gained composite oxides and be water conditioner of the present invention.
Wherein, oxide compound, oxyhydroxide or the salt of the described La of a step, Ce, Pr, Nd can be by buying, also can change obtaining the alkali cake by the light rare earths concentrate through high-temperature roasting, acidleach, alkali, add nitric acid reaction again after the proportion relation of adjustment La, Ce, Pr, Nd is qualified.
For the purity of the La, the Ce that improve, Pr, Nd compound, can with oxide compound, oxyhydroxide or the salt of La, Ce, Pr, Nd with hydrochloric acid or nitric acid dissolve after sodium hydroxide transform, the alkali cake that obtains adds nitric acid reaction again.
Described SiO
2And Al
2O
3Can adopt and contain SiO
2And Al
2O
3Replacements such as atlapulgite, wilkinite or diatomite, as long as finally satisfy SiO
2And Al
2O
3Amount and other component reach required ratio requirement and get final product.
Described magnesium oxide can adopt and contain the light burnt powder that magnesium oxide reaches more than 85% and replace.
For improving to aerobic treatment of organic matters of organic ability in the water body, can add citric acid when crystallization, citric acid adding amount is 100% metering with final water conditioner product, is 8-15%, do not use chemical substances such as similar cetrimonium bronmide material in the present technique, the good and safety of treatment effect.
At the water conditioner of different algal species such as the blue-green algae in the water body, green alga, red tide, in the water conditioner preparation process, the wilkinite or the diatomite that add element such as silicon-aluminum containing calcium during grinding are synergistic agent.
The 3rd technical problem to be solved of the present invention provides the method that adopts above-mentioned sewage-treating agent treating water:
For being caused the general consumption of water body of reservoir, lake, pond, river, offshore pollution by sanitary wastewater, trade effluent, breed bait throwing in pollution and widespread pollution from the overuse of fertilizers and pesticides in rural area is 0.2-0.5g/M
3Need suitably to increase consumption according to fraction of coverage for eliminations such as blue-green algae, green alga, red tides, if water surface fraction of coverage surpasses at 10% o'clock, maximal dose is controlled at 1g/M
3, this product should be converted water and splash, but also dry powder spreads fertilizer over the fields, and spreads fertilizer over the fields after also itself and particulate matter can being mixed and stirred for deep water, also can be made into the capsule input, requires evenly when adopting the sort of method all must use.
The activity degree of water conditioner of the present invention is volume (ML) the expression activity degree that consumes sodium hydroxide solution 1mol/l with the 1000g sample, the lattice surface activity that specific surface is big is high more, water-soluble precursor reactant is fast more, the lattice of crystal grain struts big more, the ability of absorption positively charged ion and polarity organic molecule is just strong more, the method that detects is with the hydrogen ion in the sodium acetate liquid displacement sample at present, is indicator with phenolphthalein.Water conditioner of the present invention activity degree reach 40-80.
Composite salt constructional feature of the present invention is two-layer silicon-oxy tetrahedron folder layer of aluminum hydrogen-oxygen tetrahedron, and the crystal layer surface has only Sauerstoffatom, does not have the hydrogen-oxygen atom, promptly has only lax Van der Waals force, do not have hydrogen bonded power, the distance between crystal layer is 0.96-2.14nm, the diameter of crystal grain several between tens nanometers.Elements such as lanthanum cerium have the 4f electron structure of underfilling, produce diversified energy level thus, have the long-pending big feature of neutron-capture cross section, and in element such as lanthanum cerium and sial recombination process, lanthanide cation replaces the K between brilliant covering
+, Na
+, Ca
2+, Mg
2+, H
+Deng, make it change soluble salt into and stripping, thereby weakened the reactive force between original layer, layer lattice is split, lattice spacing enlarges, and the duct is dredged, and active surface once added, and adsorptive power improves.Simultaneously, the coordination of the magnetic of lanthanon, catalytic, photo and multiple mode makes water conditioner show superior performance.
In a word, the present invention selects to have materials such as the lanthanon of natural character and sial, does not add any chemical processing agent, guarantees validity and security, realizes the combination of catalytic effect and biological effect.Water conditioner of the present invention can not only be eliminated the Organic pollutants problem in the water body, and can eliminate most inorganic pollution problems, can not only administer general the pollution, and can eliminate or suppress the growth of blue-green algae, green alga and red tide.Suitable reservoir, lake, pond and flow velocity be the river slowly.Also can handle drinking water body, aquaculture water, irrigation water body, landscape water body etc.
Embodiment
Below by the specific embodiment mode the present invention is further described, but do not represent embodiments of the present invention to only limit to following examples.
The preparation of embodiment 1 water conditioner of the present invention
0.26La
2O
3·0.30CeO
2·0.013Pr
6O
11·0.018Nd
2O
3·0.28SiO
2·0.085Al
2O
3·0.014MgO
The preparation method is as follows:
A, the muriate of La, Ce, Pr, Nd is added in the reactor according to said ratio, by 1: the solid-to-liquid ratio of 4-5 adds dilute hydrochloric acid (concentration of hydrochloric acid is 33% by volume), reactor is heated to 80-110 ℃ and stirred 40-60 minute, removes the solution that must contain La, Ce, Pr, Nd behind the impurity by high-pressure filteration.
B, above-mentioned solution pumped in the next stage reactor add 0.5-0.8 ton/5m
3Sodium hydroxide transform, the alkali cake is through washing repeatedly, and washing lotion pH value reaches at 7.5 o'clock, is 1 in the weight by volume of alkali cake and nitric acid: the nitric acid of the ratio adding 65%v/v of 2.2-2.5, reheat adds magnesium oxide and atlapulgite, stirring reaction 30-40 minute while stirring to 90-100 ℃.
C, reaction solution pump into the interior condensing crystal of reactor of the special-purpose condensing crystal that is equipped with the high pressure spraying pump.
Promptly grind system pale powder shape finished product after d, the crystallization with raymond mill.
This product is used for risk of drinking water pollution administers, and for quick elimination water body suspended particle, reduces turbidity, oxygen-consumption, nitrate, fluorochemical, muriate etc. and all demonstrates positive effect.
The preparation of embodiment 2 water conditioners of the present invention
Prepare raw material according to table 1 and table 2 proportioning, the preparation method is with embodiment 1.Wherein the raw material citric acid is to add when the c step crystallization.To prepare the gained sample and be used to dispose of sewage, the results are shown in Table 1 and table 2.
Table 1
At least to contain La as can be known from the above table
2O
3, CeO
2Two kinds of lanthanon, water conditioner could have good degraded and transformation to COD, BOD, ammonia nitrogen, total phosphorus etc.
Table 2
Can reflect by last table and to add behind the citric acid changing value explanation of COD and BOD the aerobic treatment of organic matters of organic ability in the water body is strengthened greatly, therefore help degraded such as COD, BOD, ammonia nitrogen, total phosphorus and transform.The water treatment of identical proportioning in addition brings up to 45.84% to the aquaculture water organic removal rate by 25.39% behind the interpolation citric acid, and the algae water organic removal rate is brought up to 41.78% from 29.84%.
The preparation of embodiment 3 water conditioners of the present invention
The preparation method prepares raw material with embodiment 1 according to the proportioning of table 3.
Table 3
The present inventor is through a large amount of screening experiments, and the result shows: La
2O
3, CeO
2, Pr
6O
11, Nd
2O
3, SiO
2, Al
2O
3, MgO proportioning be the best with 20-25: 32-40: 1.9-2.5: 2.1-3: 15-20: 4-5: 1.1-1.3.
Test example 1 water conditioner of the present invention is applied to cultivating pool and handles
At the beginning of 2007 8 months,, body eutrophication, change reasons such as the water frequency is low because of temperature raises, cause cultivation water to change, cause blue algae bloom in the cultivating pool, the blue-green algae in leeward constantly accumulation rots to produce stink and toxin, worsen water body, influence aquaculture safety.
With the embodiment of the invention 2 tables 1, the water conditioner of 1-9 preparation is used to handle cultivating pool, 20 mu of waters surface of test site mixed breed, and 2 meters of average depths, the floating one deck blue-green algae of the water surface, the blue-green algae fraction of coverage of the water surface is tawny greater than 20% water colour, and peculiar smell is arranged.
Consumption: calculate disposable input group of the lanthanides pollution treatment promoting agent 2668g by every cube of water body 1g.
After 6 hours, can observe directly, promoting agent is dissolved in water body, the particulate in the beginning adsorbed water body, and sink gradually.The 5th day, can be observed the blue-green algae atrophy and the sedimentation of the water surface.Pond waters is carried out sampling analysis, and blue-green algae after treatment and pollution substance all are deposited on the bottom, and water transparency increases gradually.Observed in the 20th day, water-surface blue-green algae is basically eliminate, and the original Chi Shui of water colour has tangible change, and the transparency of water body has also improved 29cm than the initial stage.
During in October, 2007, the whole flocculation sediments of the blue-green algae in the test site in the water body are in pond bottom, and the water surface does not produce blue-green algae again.Water quality changes III class surface water quality into by V class surface water quality, and water transparence reaches 40cm, and sensory effects is good.Do not occur blue-green algae and harm thereof from July 20th, 10 months 1 August in 2007 in the test site, and aquaculture water is lived, fish is strong, quality better, output increase.
Test results and analysis
Determine the check and analysis of sampling spot sampling according to ortho-test " five plum blossoms point ".After test tank drops into lanthanide series water treatment agent of the present invention, the use-testing water sampler is gathered the water sample in test tank and contrast pond, duration of test was measured water transparency in per five days, was interrupted the mensuration water PH value, took a sample before other parameter is tested and after finishing and detected comparative analysis.1, pH value and transparency
During the whole test, transparency change is obvious, and the pH value of test tank has obvious downward trend, and August 10, the preliminary survey water PH value was 9.8, measures water PH value August 30 and slightly descends.See Table 4:
Table 4 water PH value, transparency analysis record table
| Time | PH value | Transparency (cm) | Remarks |
| 2007.8.10 | 9.8 | ≤10 | Blue-green algae is intensive |
| 2007.8.30 | 9.5 | 29 | |
| 2007.12.20 | 8.1 | 35 | |
| 2008.7.16 | 7.1 | 40 | Water level promoting, water body has exchange |
Lanthanide series water treatment agent has also suppressed the absorption and the conversion of its nutritive element when entering erosion blue-green algae cell, the nutritive element scarcity that causes frond in the pond, making it can't self synthetically grown breeding desired protein, influences chlorophyllous generation and photosynthesis simultaneously and carries out.
Each index mutation analysis of table 5 pond is observed table
| Time | Chlorophyll a content (mg/m 2) | The algae amount (ten thousand/L) | Transparency (cm) | Colourity |
| 2007.08.10 | 698.88 | 7515.15 | ≤10 | Tawny |
| 2007.08.30 | 491.40 | 4535.15 | 29 | Deep green |
| 2007.12.20 | 398.58 | 1935.00 | 35 | Light green |
| 2008.07.16 | 220.58 | 1008.44 | 40 | Pea green |
After throwing in promoting agent, August 30, chlorophyll a content was than descending 29.68% August 10, to December 20 chlorophyll a content again than descending 18.88% on August 30, the chlorophyll a content state that tends towards stability before the 16 days July in 2008 afterwards, also containing chlorophyll a mainly is to have plant planktons such as a considerable amount of diatoms, latent algae in the water body.Remove the algae effect and see Table 6.
Table 6 group of the lanthanides is removed the removing degree of algae promoting agent to blue-green algae
Unit: %
| The algae amount | Transparency | Chlorophyll a | BOD 5 | COD mn | Total nitrogen | Total phosphorus |
| Descend 84.5% | Promote 30cm | Descend 39.2% | Descend 21% | Descend 48.3% | Descend 12.5% | Descend 6.9% |
Table 7 testing data synopsis
This is tested it and disposes observation and analytical results shows, water conditioner of the present invention is in growth and the breeding of control blue-green algae, and reduction water body content of chlorophyll is improved aspect such as water quality and had good effect.
Duration of test is pressed NY5053-2001 " the common fresh-water fishes of pollution-free food " standard detection to the cultured fishes sampling, and fish body internal protein content is abundant, and the every sanitary index of intramuscular all reaches national pollution-free food standard.
Test example 2 water conditioners of the present invention are applied to tap water
Adopt the embodiment of the invention 2 tables 2, the water conditioner of 2-6 preparation, usage quantity 0.2M
3Handle certain drinking water source reservoir, handle that cross-reference sees Table 8, table 9 and table 10.
Table 8
| Project | Unit | Preceding index comes into operation | The back index comes into operation |
| Colourity | Degree | ＜5 | ＜5 |
| Turbidity | NTU | 1.27 | 0.95 |
| Stink | Describe | Do not have | Do not have |
| The naked eyes visible | Describe | Do not have | Do not have |
| PH | Zero dimension | 7.76 | 7.52 |
| Total hardness CaCO 3 | Mg/l | 185.9 | 196.9 |
| Iron | Mg/l | ＜0.05 | ＜0.05 |
| Manganese | Mg/l | ＜0.01 | ＜0.01 |
| Copper | Mg/l | ＜0.02 | ＜0.02 |
| Zinc | Mg/l | ＜0.05 | ＜0.05 |
| Oxygen-consumption O 2 | Mg/l | 2.3 | 1.9 |
| Nitrate nitrogen N | Mg/l | 1.8 | 1.7 |
| Anion synthetic detergent | Mg/l | ＜0.1 | ＜0.1 |
| Phenol | Mg/l | ＜0.002 | ＜0.002 |
Table 9
| Project | Unit | Preceding index comes into operation | The back index comes into operation |
| Soluble solid | Mg/l | 280 | 305 |
| Fluorochemical | Mg/l | 0.46 | 0.36 |
| Prussiate | Mg/l | ＜0.002 | ＜0.002 |
| Arsenic | Mg/l | 0.004 | 0.003 |
| Selenium | Mg/l | ＜0.002 | ＜0.002 |
| Mercury | Mg/l | ＜0.0005 | ＜0.0005 |
| Sexavalent chrome | Mg/l | ＜0.005 | ＜0.005 |
| Aluminium | Mg/l | ＜0.02 | ＜0.02 |
| Plumbous | Mg/l | ＜0.001 | ＜0.001 |
| Cadmium | Mg/l | ＜0.0005 | ＜0.0005 |
| Muriate | Mg/l | 10.7 | 8.3 |
| Vitriol | Mg/l | 60.7 | 60.7 |
| Trichloromethane | Mg/l | 0.0074 | 0.0093 |
| Tetracol phenixin | Mg/l | ＜0.0002 | ＜0.0002 |
Table 10
| Project | Unit | Preceding index comes into operation | The back index comes into operation |
| Total α radiation volume activity | Bq/L | 0.16 | 0.10 |
| Total β radiation volume activity | Bq/L | 0.30 | 0.13 |
| Useful total number of bacterial colony | Cfu/ml | 1.2×10 3 | 2.9×10 3 |
| Total coli group | MPN/100ml | Do not detect | Do not detect |
| Heat-resisting coliform | MPN/100ml | Do not detect | Do not detect |
Above-mentioned description of test: 1, judge detected result according to drinking water standard, every index all can satisfy standard-required; 2, PH, turbidity, oxygen-consumption, nitrate, fluorochemical, muriate etc. all are lower than standard value and contrast sample.
Test example 3 water conditioners of the present invention are applied to somewhere blue-green algae Pollution abatement
Be subjected to destructive destruction in the sixties in last century because of " enclosing lake epeirogenetic ", because eutrophy causes blue algae bloom, make water quality be in bad V class for a long time, the accumulation of polluting throughout the year makes that picturesque place has become a pond " stagnant water " originally, becomes the most serious zone of pollution.
Summer in 2007, (embodiment 2 tables 2 2-4) have carried out the managemental experiment of system to 100 mu of seriously polluted zones of blue-green algae to adopt water conditioner of the present invention.Concrete operations are as follows:
(1) basic condition
1, place: 100 mu of the waters surface, 3.2 meters of average depths are polluted in the somewhere.
2, present situation: the water surface is floating one deck blue-green algae, and the blue-green algae density in the water body is bigger, and water colour is mazarine, and peculiar smell is arranged, and transparency 42cm is the basis of outburst blue-green algae behind the temperature recovery.
3, consumption: calculate disposable 21 kilograms of the group of the lanthanides pollution treatment promoting agents that drop into altogether, 7350 yuan of total values by every cube of water body 1g.
4, observe: observed record once in per 5 days, and detected physical and chemical index before implementing and when finishing.
(2) sense organ situation
1, the back can be observed water surface at the 5th day the blue-green algae of coming into operation begins atrophy or death gradually, and the blue-green algae in the water body is adsorbed parcel, produces the cotton-wool coagulation phenomena.
At duration of test, the scientific research personnel of management station has carried out sampling analysis to the polluted-water in grass sea, the water intaking measuring tank insolation of packing into simultaneously compares, 12 hours blue-green algaes of water body after treatment and pollution substance just all are deposited on the bottom, the pure and fresh transparency of water quality is good, water colour changes not quite though undressed water body has the minute quantity deposition, and transparency is low, and sensory effects is poor.
2, after the observation in 20 days, water-surface blue-green algae is basically eliminate, and the original Chi Shui of water colour has tangible change, and the transparency of water body also improves 1.4 meters than the initial stage.
3, during the 9 days January in 2008 in the application zone water surface do not produce blue-green algae again, the whole flocculation sediments of the blue-green algae in the water body in large are in careless seabed portion.Water quality is good, and seawater is limpid, and sensory effects is good, and transparency is up to 1.8 meters.
(3) the physico-chemical analysis information slip 11
Table 11
This trial period is 142 days, for polluting so serious and old for many years profound and complicated zone of problem, so the short period of time test obviously is not enough, but this is tested and has produced amazing result in the short period of time, eliminating the water body of pollution in wide area, effectively killing and showed quite outstandingly on the effect of blue-green algae, comparing existing other algae removal technology should be once successful test with the performance that equal time showed.
Claims (12)
1. lanthanide series water treatment agent is characterized in that:
Its chemical constitution is: a La
2O
3B CeO
2C Pr
6O
11D Nd
2O
3E SiO
2FAl
2O
3G MgO and a small amount of unavoidable impurities, wherein the span of coefficient a, b, c, d, e, f, g is: 0.20≤a≤0.35,0.32≤b≤0.55,0≤c≤0.035,0≤d≤0.035,0.10≤e≤0.30,0.03≤f≤0.09,0.010≤g≤0.014.
2. lanthanide series water treatment agent according to claim 1 is characterized in that: the span of a, b, c, d, e, f, g is:
0.20≤a≤0.25、0.32≤b≤0.40、0.019≤c≤0.025、0.021≤d≤0.030、0.15≤e≤0.20、0.04≤f≤0.05、0.011≤g≤0.013。
3. lanthanide series water treatment agent according to claim 2 is characterized in that: the value of a, b, c, d, e, f, g is: a=0.22, b=0.33, c=0.024, d=0.028, e=0.18, f=0.045, g=0.012.
4. according to each described lanthanide series water treatment agent of claim 1-3, it is characterized in that: also contain Sm, the Eu of lanthanide series water treatment agent gross weight below 0.001%, at least a element among the Gd.
5. according to each described lanthanide series water treatment agent of claim 1-3, it is characterized in that: also add at least a trace element in iron, calcium, the potassium in the described water conditioner, add-on is in the water conditioner total amount, and iron, calcium, potassium total amount are no more than 2.5%.
6. the preparation method of lanthanide series water treatment agent is characterized in that being finished by following steps:
A, according to a La
2O
3B CeO
2C Pr
6O
11D Nd
2O
3E SiO
2FAl
2O
3G MgO, wherein the span of a, b, c, d, e, f, g is: raw material is prepared in 0.20≤a≤0.35,0.32≤b≤0.55,0≤c≤0.035,0≤d≤0.035,0.10≤e≤0.30,0.03≤f≤0.09,0.010≤g≤0.014,
Add salpeter solution in oxide compound, oxyhydroxide or the salt by calculated amount preparation La, Ce, Pr, Nd, stirring is dissolved material fully;
B, heat temperature raising add magnesium oxide while stirring and contain SiO to 90-100 ℃
2And Al
2O
3Material reaction 40-60 minute, nitrate decomposes emits O
2, NO and NO
2
C, reaction solution concentrate, crystallization, drying, be ground to product and cross 60 order gained composite oxides promptly.
7. the preparation method of lanthanide series water treatment agent according to claim 6 is characterized in that: the oxide compound of the described La of a step, Ce, Pr, Nd, oxyhydroxide or salt are earlier with hydrochloric acid or nitric acid dissolve; Adopt sodium hydroxide to transform then, obtain the alkali cake and add the salpeter solution solubilizing reaction again.
8. the preparation method of lanthanide series water treatment agent according to claim 6, it is characterized in that: oxide compound, oxyhydroxide or the salt of the described La of a step, Ce, Pr, Nd obtains the alkali cake by the light rare earths concentrate through roasting, acidleach, alkali commentaries on classics, and the proportion relation of adjusting La, Ce, Pr, Nd meets a La
2O
3B CeO
2C Pr
6O
11D Nd
2O
3E SiO
2FAl
2O
3Add the salpeter solution solubilizing reaction after after the relation of g MgO again; Wherein the span of a, b, c, d, e, f, g is: 0.20≤a≤0.35,0.32≤b≤0.55,0≤c≤0.035,0≤d≤0.035,0.10≤e≤0.30,0.03≤f≤0.09,0.010≤g≤0.014.
9. the preparation method of lanthanide series water treatment agent according to claim 6 is characterized in that: described SiO
2And Al
2O
3Employing contains SiO
2And Al
2O
3Atlapulgite, wilkinite or diatomite replace; Described magnesium oxide adopts and contains magnesium oxide and reach light burnt powder replacement 85% or more.
10. the preparation method of lanthanide series water treatment agent according to claim 6 is characterized in that: add citric acid when the c step crystallization, citric acid adding amount is 100% metering with final water conditioner product, is 8-15%.
11. the preparation method of lanthanide series water treatment agent according to claim 6 is characterized in that: the wilkinite or the diatomite that add the silicon-aluminum containing calcium constituent when the c step is ground are synergistic agent.
12. adopt the method for the described lanthanide series water treatment agent treating water of claim 1: it is characterized in that:
For being caused the general consumption of water body of reservoir, lake, pond, river, offshore pollution by sanitary wastewater, trade effluent, breed bait throwing in pollution and widespread pollution from the overuse of fertilizers and pesticides in rural area is 0.2-0.5g/M
3Eliminate for blue-green algae, green alga or red tide, needing suitably increases consumption according to fraction of coverage, if water surface fraction of coverage surpasses at 10% o'clock, maximal dose is controlled at 1g/M
3
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| CA2756035A1 (en) | 2009-03-20 | 2010-09-23 | Algal Scientific Corporation | System and method for treating wastewater via phototactic heterotrophic microorganism growth |
| CN103693736A (en) * | 2013-11-25 | 2014-04-02 | 宁波天安生物材料有限公司 | Denitrification water treatment agent |
| CN103936125B (en) * | 2014-04-18 | 2015-05-13 | 芜湖凯奥尔环保科技有限公司 | Rare-earth blue algae treating agent and preparation method thereof |
| CN103936087B (en) * | 2014-04-18 | 2015-04-08 | 芜湖凯奥尔环保科技有限公司 | Mixed blue-green algae treating agent |
| CN104667633B (en) * | 2015-01-29 | 2017-02-22 | 佛山市大健康产业发展有限公司 | Filter medium for removing cadmium in drinking water, filter element and preparation method of filter medium |
| CN108675501B (en) * | 2018-06-06 | 2021-04-02 | 全椒县花溪湖特种水产专业合作社 | Treatment method of turtle breeding wastewater |
| CN112777752A (en) * | 2020-12-18 | 2021-05-11 | 无锡绿水之源生物科技有限公司 | Composite preparation for inhibiting growth of moss in aquaculture pond and application |
| CN112811607A (en) * | 2021-03-12 | 2021-05-18 | 四川瑞泽科技有限责任公司 | Method for constructing lake and reservoir water ecosystem |
| CN113072266A (en) * | 2021-05-08 | 2021-07-06 | 四川瑞泽科技有限责任公司 | Method for repairing black and odorous water body in small watershed |
| CN114105314B (en) * | 2021-12-09 | 2023-12-15 | 苏州中晟环境修复有限公司 | Water environment restoration material and preparation method thereof |
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