CN115845795A - Water body purification material, preparation method thereof and water body purification method - Google Patents
Water body purification material, preparation method thereof and water body purification method Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 163
- 239000000463 material Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 45
- 238000000746 purification Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 39
- -1 clays Substances 0.000 claims abstract description 15
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 14
- JYIBXUUINYLWLR-UHFFFAOYSA-N aluminum;calcium;potassium;silicon;sodium;trihydrate Chemical compound O.O.O.[Na].[Al].[Si].[K].[Ca] JYIBXUUINYLWLR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910001603 clinoptilolite Inorganic materials 0.000 claims abstract description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 11
- 239000011707 mineral Substances 0.000 claims abstract description 11
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000012010 growth Effects 0.000 claims abstract description 8
- 239000010457 zeolite Substances 0.000 claims abstract description 7
- 239000011435 rock Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 5
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- 238000000227 grinding Methods 0.000 claims description 19
- 231100000719 pollutant Toxicity 0.000 claims description 19
- 238000001354 calcination Methods 0.000 claims description 17
- 241000196324 Embryophyta Species 0.000 claims description 14
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 12
- 244000005700 microbiome Species 0.000 claims description 12
- 238000000498 ball milling Methods 0.000 claims description 10
- 235000010755 mineral Nutrition 0.000 claims description 10
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 9
- 229910052900 illite Inorganic materials 0.000 claims description 9
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 claims description 9
- 239000002244 precipitate Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
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- 229910052656 albite Inorganic materials 0.000 claims description 7
- 239000004927 clay Substances 0.000 claims description 7
- 238000010791 quenching Methods 0.000 claims description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 7
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 229910021536 Zeolite Inorganic materials 0.000 claims description 5
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000010433 feldspar Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000007667 floating Methods 0.000 claims description 5
- 229910052627 muscovite Inorganic materials 0.000 claims description 5
- 239000002734 clay mineral Substances 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 4
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 2
- 238000005341 cation exchange Methods 0.000 claims description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 2
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 2
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 2
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 2
- 239000011736 potassium bicarbonate Substances 0.000 claims description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 2
- 235000011181 potassium carbonates Nutrition 0.000 claims description 2
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 229910052902 vermiculite Inorganic materials 0.000 claims description 2
- 239000010455 vermiculite Substances 0.000 claims description 2
- 235000019354 vermiculite Nutrition 0.000 claims description 2
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 10
- 150000002500 ions Chemical class 0.000 abstract description 10
- 239000011148 porous material Substances 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 5
- 150000004649 carbonic acid derivatives Chemical class 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 abstract 1
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- 238000001179 sorption measurement Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 150000002910 rare earth metals Chemical class 0.000 description 4
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- 239000000701 coagulant Substances 0.000 description 3
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- 239000002351 wastewater Substances 0.000 description 3
- 238000003911 water pollution Methods 0.000 description 3
- 241000498251 Hydrilla Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241001123263 Zostera Species 0.000 description 2
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- 241000195967 Anthoceros Species 0.000 description 1
- 241000224466 Giardia Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
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- 239000003513 alkali Substances 0.000 description 1
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910001579 aluminosilicate mineral Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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Images
Abstract
The invention relates to a water body purification material, a preparation method thereof and a method for purifying a water body, wherein the water body purification material is in a powder shape, and the preparation raw materials comprise the following components in parts by weight: lanthanum modified zeolites, clays, rock forming minerals, clinoptilolite, silica sol, pozzolans, and soluble carbonates. The material has abundant pores in the composition, can adsorb organic matters and heavy metal ions after being scattered into a water body, and is easy to settle to the bottom surface of the water body to form a covering film, and meanwhile, the covering film is favorable for the growth of water plants.
Description
Technical Field
The invention belongs to the technical field of water treatment, and particularly relates to a water body purification material, a preparation method thereof and a water body purification method.
Background
With the rapid development of economy, the living standard of residents is continuously improved, the urban construction is continuously expanded, the urban water pollution is increasingly serious, the water bodies of rivers, lakes, reservoirs, pools and the like in cities and rural areas are seriously polluted, the content of pollutants received by the urban water pollution device per se far exceeds the water environment capacity per se, and the urban water pollution device per se presents unpleasant color (black or blackish) and emits unpleasant odor (stink or stink). The black and odorous water body is divided into two parts: (1) insoluble matter present in the water body in a solid state or adsorbed on suspended particles; (2) is a colored organic compound (mainly humus organic matter) dissolved in water. The method specifically comprises the following steps: (1) when the content of organic pollutants in the water body is too high, under the action of microorganisms, a large amount of dissolved oxygen is consumed by decomposing organic matters, so that the water body is converted into an anoxic or anaerobic state; under the anoxic and anaerobic conditions, metal ions such as iron and manganese in the water body and sulfur ions in the water form sulfides, and the sulfides are adsorbed on the suspended particles to make the water body black; (2) under the influence of hydraulic flushing, artificial disturbance and biological activity, black sediment particles can be deposited and resuspended, so that a large number of suspended particles float in water, and then under a series of physical-chemical-biological comprehensive actions, pollutants adsorbed on the sediment particles are exchanged with pore water, so that the pollutants are released into a water body, and the water body is blackened and smelly.
Fine particles in the black and odorous water body, particularly colloidal particles, are difficult to naturally precipitate and are the main source of turbidity and black appearance of the water body; the fine particles are mainly non-soluble suspended particles, have low biodegradability, are not easily degraded by microorganisms, and even have an inhibiting effect on the growth of the microorganisms, so that the main measure for solving the problem of blackening of the water body in the treatment of the black and odorous water body is to remove the suspended particles in the water body.
The related technologies and patents for purifying the polluted water body are various, and comprise physical methods mainly comprising screening interception, gravity separation, matrix filtration, porous material adsorption and the like; chemical methods such as ion exchange method, chemical precipitation method, breakpoint chlorination, electrodialysis, electrochemical treatment, catalytic cracking, neutralization method and oxidation method, and biological methods such as activated sludge method and biofilm method are mainly used, but are limited by process conditions, and these methods are mainly applied to sewage treatment plants.
For black and odorous water bodies such as rivers, lakes, reservoirs, pools and the like in cities and rural areas, the common treatment method mainly comprises physical and biological methods such as constructed wetlands, ecological ponds, land infiltration, microbial purification and the like, and the self-purification of the water bodies is realized to the maximum extent; however, this kind of process often requires large construction cost, land cost and post-operation cost, and the purification period is long. In order to quickly solve the problems of turbidity, blackening and smelliness of black and odorous water, the in-situ ex-situ treatment is mainly carried out through peripheral integrated equipment at present, a coagulant needs to be added for coagulating sedimentation, and suspended particles and pollutants which cause the blackening of the water are removed. The basic principle of the coagulating sedimentation has the function of compressing a double electric layer; electric neutralization and adsorption-bridging.
At present, a coagulant which can be used for purifying a water body by integrated equipment or directly added into a black and odorous water body for in-situ purification and removal of suspended particles in the water body is mainly prepared from chemical components, and the addition of the coagulant is carefully adopted in order to avoid adverse effects and secondary pollution caused by chemical agent residues on the water environment and the water ecology in consideration of factors such as biological safety and the like; in order to realize rapid water purification, remove suspended particles and pollutants in the water body to improve the transparency of the water body and promote microorganisms and plants in the water body to purify the water body, part of colleges and universities develop an environment-friendly water purification material which can be used in integrated equipment and directly splashed in black and odorous water areas through the research on water-containing aluminosilicate minerals with a layered structure.
Chinese patent application with publication number CN1817438A discloses a method for preparing a sewage phosphorus removal adsorbent by using ion adsorption type rare earth, which comprises the steps of preparing ion adsorption type rare earth ore and clay according to the weight ratio of 10: 0.5-4, granulating, roasting at 500-800 ℃ for 1-3 hours, circularly activating in a reactor for 4-8 hours by using acid activating liquid, adjusting the pH value of the activating liquid to 8-12 by using alkali liquor, circularly activating for 4-8 hours, drying at 100-120 ℃ for half an hour, heating at the heating rate of 10-20 ℃ per minute, roasting at the final temperature of 400-700 ℃ for 0.5-2 hours, and cooling to obtain the ion adsorption type rare earth adsorbent. The method adopts the ion adsorption type rare earth ore as the raw material, can effectively adsorb suspended particles in water, form flocculent precipitate with larger mass, and quickly precipitate, but the ion adsorbent has high preparation cost, complex process for preparing the adsorbent and low production efficiency, can be used for laboratory test preparation and application, is not suitable for large-scale batch production, and cannot be applied and popularized in markets and engineering application.
Therefore, it is an object of the present invention to provide a method for preparing a water quality improving composition containing environmentally friendly active natural minerals, which can be manufactured at low cost, can be produced with stable process flow, can be mass-produced, and can be applied to black and odorous water body treatment works.
It is another object of the present invention to provide a water quality improving composition containing environmentally friendly active natural minerals, which can improve water purification (coagulating sedimentation) efficiency of an integrated treatment apparatus or coagulate and precipitate various suspended particle contaminants without passing through the apparatus, and improve water quality by a combined process of microorganisms and aquatic plants.
Disclosure of Invention
In order to achieve the above objects, according to one aspect of the present application, there is provided a water purification material having a composition with abundant pores, capable of adsorbing organic substances and heavy metal ions after being sprinkled into a water body, and easily settling to the bottom surface of the water body to form a cover film. In addition, in the process of sedimentation, soluble carbonate in the powder structure of the material is gradually dissolved, so that more pores are released while the material sinks, the adsorption capacity is increased, particularly the adsorption capacity of underwater pollutants is increased, and in addition, the carbonate also plays a role in adjusting the pH value of a water body in the process of dissolution.
Specifically, the water body material is powdery, and the preparation raw materials comprise the following components in parts by weight:
10-30 parts of lanthanum modified zeolite
20-40 parts of clay
12-20 parts of rock forming mineral
8-10 parts of clinoptilolite
20-30 parts of silica sol
4 to 8 parts of pozzolana, and
2-10 parts of soluble carbonate.
Preferably, the rock-forming mineral is selected from one or two of muscovite and feldspar, the muscovite and feldspar have a large specific gravity and are not harmful to aquatic ecosystems, the specific gravity of the aggregate is increased, rapid sedimentation in water is facilitated, and re-bloom of the precipitate in the sediment is prevented. The muscovite and feldspar may be used alone or in combination of at least two. Preferably, a combination of muscovite and feldspar is used, preferably in a weight ratio of 3 to 7:1-5, to effectively control the rate of formation and precipitation of agglomerates.
The clay mineral is a high cation exchange capacity clay mineral, preferably one or more of vermiculite, montmorillonite and illite.
The lanthanum modified zeolite is prepared by grinding natural zeolite into powder and mixing LaCl 3 The lanthanum modified zeolite obtained by filtering, drying and calcining the solution and deionized water is white powder, has the effect of removing phosphorus and can inhibit the growth of algae.
The chemical formula of the clinoptilolite is Na (AlSi) 5 O 12 )·4H 2 O, a white or colorless plate-like or plate-like crystal.
The volcanic ash is selected from volcanic ash with neutrality, porosity, aluminum and siliceous properties. In experiments, it is found that the addition of a certain amount of pozzolan is beneficial for grinding into porous particles, if no pozzolan is added, the grinding of the pre-mixture after sintering into powder requires higher strength, and the ground powder has non-uniform particle size, many pores are filled with fine powder, and the addition of the pozzolan sintered product is easier for grinding into fine powder and the pore structure of the powder is more complete.
The soluble carbonate is selected from one or more of sodium carbonate, sodium bicarbonate, potassium carbonate and potassium bicarbonate.
More preferably, the rock-forming mineral is selected from albite and the clay is selected from illite. In experiments, the combination is found to be selected to obtain larger water body adsorption capacity under the condition that other conditions are not changed, and the water body plant growth promoting effect is achieved.
The preparation method of the water body purification material comprises the following steps:
1) Crushing lanthanum modified zeolite, clay, rock forming mineral and clinoptilolite into powder with the particle size of less than 5 millimeters, preferably crushing each component into powder with the particle size of 260 meshes or less, then stirring and mixing the powder with silica sol and volcanic ash, and further performing ball milling and mixing to obtain a premix I;
2) Drying the premix I obtained in the step 1) (preferably at the temperature of 150-180 ℃), grinding the premix I into powder, and then uniformly mixing the powder with soluble carbonate to obtain a premix II; ball milling mixing is preferred.
3) Calcining the premix II obtained in the step 2) at high temperature, quenching, and grinding into powder again to obtain the water body purification material.
Preferably, the calcination temperature in step 3) is 850-1000 ℃, preferably 850-900 ℃. Also preferably, the quench is reduced to below-20 ℃ in 30 minutes.
Preferably, the soluble carbonate is sodium carbonate and the calcination temperature of step 3) is 850-1000 ℃.
Preferably, the ball milling in step 3) is carried out to 200-300 meshes.
The invention further provides a method for purifying the water body, which comprises the step of scattering the water body purifying material on the surface of the water body to be purified. Preferably, the method comprises: 1) Scattering the water body purifying material on the surface of the water body to be purified; 2) Disturbing the water body to enable the water body purifying water material sprayed on the water area to be treated to be gathered and precipitate floating suspended particle pollutants; 3) Throwing the submerged plant to purify pollutants through plant leaves and root systems to inhibit the growth of algae.
Preferably, the method comprises: 1) Scattering the water body purifying material on the surface of the water body to be purified; 2) Disturbing the water body to enable the water body purifying material sprayed on the water area to be treated to be gathered and precipitate floating suspended particle pollutants; 3) Adding microorganism as a curing carrier into a water body; 4) Throwing the submerged plant to purify pollutants through plant leaves and root systems to inhibit the growth of algae.
The immobilized carrier microorganism is selected from one or more of photosynthetic bacteria, nitrobacteria, multienzyme bacteria and denitrogenated bacteria. The dosage of the water purifying agent is 1 to 1.5 times of the mass of the water purifying material.
Preferably, the body of water is disturbed by a hull such as a submachine boat.
Preferably, the submerged plant is selected from watermifoil, hornwort, curly pondweed, hydrilla verticillata, eel grass, etc.
Preferably, the adding amount of the water purifying material is 20-80 g/square meter of water body, preferably 40-60 g/square meter of water body.
The lanthanum modified zeolite is natural oreGrinding into powder, adding 0.05mol/L LaCl 3 Solution, natural zeolite and LaCl 3 The solid-liquid ratio of the solution is 1:20-25, adjusting the pH value of the solution to 9-10, continuously stirring for 5-10h, washing by deionized water, filtering, drying the obtained powdery solid, and calcining at 400-800 ℃.
As described above, the mixed material for purifying a water body of the present application can remove suspended particles and pollutants causing blackening of the water body, inhibit growth of algae, improve transparency of the water body, and purify the water body, thereby providing a necessary condition in an early stage for constructing a complete water ecosystem. In addition, the mixed material of the purification water body of this application can be in the influent source of the purification water under the condition that does not have extra treatment facility, reduces the treatment load of various water treatment facilities, reduces the construction cost of relevant facility and the medicament cost of later stage fortune dimension simultaneously.
Technical effects of the invention
1. The water purifying material has strong adsorption capacity to heavy metals and organic matters, and can obviously reduce heavy metals, total phosphorus, total nitrogen and ammonia nitrogen in black and odorous water and improve transparency even when being just put into and not maintained;
2. after the submerged plant is added for maintenance, the contents of heavy metal, total phosphorus, total nitrogen and ammonia nitrogen, and the COD value are further reduced, the transparency is obviously improved, and the thickness of the bottom mud is reduced.
Drawings
Figure 1 is a graph comparing before (right half) and 1 year after (left half) giardia treatment.
Detailed Description
Description 1: in all the following examples, the amount of the raw materials is in parts by mass unless otherwise specified.
Description 2: the situation of the former Jialu river mark section is not controlled
Main water quality indexes in the Jianlu river section are as follows: the transparency is 15-30cm, the COD data is 24.57mg/L, the SS content is 46.35mg/L, the total phosphorus content is 0.41mg/L, the total nitrogen content is 10.06mg/L, and the ammonia nitrogen content is 1.72mg/L;
inner bottom mud of the Jianlu river section: the thickness is about 75cm, and the organic matter content is about 4.13%Heavy metals: cu about 40.3mg/kg, pd about 45.5mg/kg; the structure of the bottom mud is as follows: pore volume of 0.21-0.43 ml/g and specific surface of 200-300 m 2 G, the aperture is 5-8 nm.
Preparation example 1: preparation of lanthanum-modified zeolites
Grinding natural zeolite into powder of less than 100 meshes, adding 0.05mol/L LaCl 3 In solution, natural zeolite and LaCl 3 The solid-liquid ratio of the solution is 1: and 25, adjusting the pH value of the solution to 10, continuously stirring for 10 hours, washing by using deionized water, filtering, drying the obtained powdery solid, and calcining at 600 ℃ to obtain the lanthanum-modified zeolite.
Preparation example 2 preparation of Water purifying Material
1) Crushing 25 parts of lanthanum modified zeolite, 30 parts of illite, 15 parts of albite and 8 parts of clinoptilolite obtained in preparation example 1 into particles with the particle size of below 200 meshes, stirring and mixing with 25 parts of silica sol and 6 parts of volcanic ash, and then further performing ball milling to mix to obtain a premix I;
2) Drying the premix I obtained in the step 1) at 180 ℃ for 2 hours, grinding the premix I into powder, and then uniformly mixing the powder with 5 parts of sodium carbonate to obtain a premix II;
3) Calcining the premix II obtained in the step 2) at 850 ℃, quenching to-20 ℃, and grinding again to obtain 200-300 mesh powder.
Preparation example 3 preparation of Water purifying Material
1) Crushing 15 parts of lanthanum modified zeolite obtained in preparation example 1, 25 parts of illite, 20 parts of albite and 10 parts of clinoptilolite into particles with the particle size of below 200 meshes, stirring and mixing the crushed particles with 20 parts of silica sol and 6 parts of volcanic ash, and then further performing ball milling and mixing to obtain a premix I;
2) Drying the premix I obtained in the step 1) at 180 ℃ for 2 hours, grinding the premix I into powder, and then uniformly mixing the powder with 5 parts of sodium carbonate to obtain a premix II;
3) Calcining the premix II obtained in the step 2) at the high temperature of 850 ℃, quenching to-20 ℃, and grinding again to obtain powder with 200-300 meshes.
Preparation example 4 preparation of Water purifying Material
1) Crushing 15 parts of lanthanum modified zeolite obtained in preparation example 1, 40 parts of illite, 12 parts of albite and 8 parts of clinoptilolite into particles with the particle size of less than 200 meshes, stirring and mixing the crushed particles with 20 parts of silica sol and 4 parts of volcanic ash, and then further performing ball milling and mixing to obtain a premix I;
2) Drying the premix I obtained in the step 1) at 180 ℃ for 2 hours, grinding the premix I into powder, and then uniformly mixing the powder with 5 parts of sodium carbonate to obtain a premix II;
3) Calcining the premix II obtained in the step 2) at the high temperature of 850 ℃, quenching to-20 ℃, and grinding again to obtain powder with 200-300 meshes.
Preparation example 5 preparation of Water purifying Material
The other conditions were the same as in preparation example 2 except that the calcination was carried out at a high temperature of 900 ℃ in step 3).
Preparation example 6 preparation of Water purifying Material
The other conditions were the same as in example 1 except that the calcination was carried out at a high temperature of 1000 ℃ in step 3).
Preparation example 7 preparation of Water purifying Material
The other conditions were the same as in preparation example 2 except that calcination was performed at a high temperature of 1200 ℃ in step 3).
Comparative preparation example 1 preparation of Water purifying Material
1) Crushing 25 parts of lanthanum modified zeolite obtained in preparation example 1, 30 parts of illite, 15 parts of albite and 8 parts of clinoptilolite into particles with the particle size of less than 200 meshes, stirring and mixing the crushed particles with 25 parts of silica sol, and then further performing ball milling and mixing to obtain a premix I;
2) Drying the premix I obtained in the step 1) at 180 ℃ for 2 hours, grinding the premix I into powder, and then uniformly mixing the powder with 5 parts of sodium carbonate to obtain a premix II;
3) Calcining the premix II obtained in the step 2) at the high temperature of 850 ℃, quenching to-20 ℃, and grinding again to obtain powder with 200-300 meshes.
Comparative preparation example 2 preparation of Water purifying Material
1) Crushing 25 parts of lanthanum modified zeolite obtained in preparation example 1, 30 parts of illite, 15 parts of albite and 8 parts of clinoptilolite into particles with the particle size of less than 200 meshes, stirring and mixing the crushed particles with 25 parts of silica sol and 6 parts of volcanic ash, and then further performing ball milling and mixing to obtain a premix I;
2) Drying the premix I obtained in the step 1) at 180 ℃ for 2 hours, and grinding the premix I into powder;
3) Calcining the powder obtained in the step 2) at the high temperature of 850 ℃, rapidly cooling to-20 ℃, and grinding again to obtain 200-300 mesh powder.
Examples 1 to 6 and comparative examples 1 to 2 (the water purifying materials of preparation examples 2 to 7 and comparative preparation examples 1 to 2 were used in this order, respectively)
The water quality treatment of the Jianlu river section comprises the following steps:
step 1, sampling and detecting a water body in a Jianlu river marking section, and acquiring characteristic index content of the water body in the Jianlu river marking section through one-month water quality monitoring; wherein, the transparency is 20-25cm, the average water quality data of COD month is 24.57mg/L, the SS content is 46.35mg/L, the standard is the IV class water body characteristic index of surface water environmental quality standard, the total phosphorus content is 0.41mg/L and exceeds the standard by 4 times, the total nitrogen content is 10.06mg/L and exceeds the standard by 7 times, the ammonia nitrogen content is 1.72mg/L and exceeds the standard by 1.2 times,
step 2, sampling and detecting the sediment in the Jianlu river marking section, wherein organic matters in the sediment are about 4.13%, and heavy metals comprise: cu about 40.3mg/kg, pd about 45.5mg/kg; the structure of the bottom mud is as follows: pore volume of 0.21-0.43 ml/g and specific surface of 200-300 m 2 G, the aperture is 5-8 nm.
And 3, carrying out pollutant interception treatment on the pollution treatment area to prevent the entry of external pollution sources in the treatment process, and isolating the polluted area to be repaired into 8 areas.
Step 4, the Jialu river banks do not have the use conditions of the integrated water purification equipment, so the Jialu river treatment method is to directly and respectively prepare the water purification materials prepared in the preparation examples 2-7 and the comparative preparation examples 1-2 according to 400g/m 2 (400 g of water purification material is added to each square meter of water body) is uniformly sprinkled in the water area of the Jialu river (respectively corresponding to 8 areas separated in the step 3), the water body is disturbed back and forth through the assault boat, so that the water purification material sprinkled on the water area to be processed is gathered, floating suspended particle pollutants are precipitated, and the precipitated gathered matter forms a covering layer on the surface of the sediment.
Step 5, adding microorganism of a curing carrier (the adding amount is about 400 g/m) 2 ) Securing ofAnd the solid carrier microorganism is settled on the surface of the sediment to form a covering layer, so that pollutants in the black and odorous sediment are further decomposed, and the solidified carrier microorganism is photosynthetic bacteria.
Step 6, planting aquatic plants in the Jianlu river marking section, matching with a water purifying material and a solidified carrier microorganism to purify a water body, and reducing bottom sediment pollutants, wherein the specific planting is as follows: in a still water area with the water depth of 1-1.5 m, the eel grass, the hydrilla verticillata and the foxtail algae are planted in a throwing planting mode, and the density is controlled at 25 clusters/m 2 。
And 7, performing one-year water quality detection and operation maintenance on the treated Jianlu river mark section.
TABLE 1 data for water quality and sediment measurements taken immediately after step 4 for examples 1-6 and comparative examples 1-2
TABLE 2 Water quality and sediment test data after one year of treatment for examples 1-6 and comparative examples 1-2
As can be seen from the table 1, the water purification material in the application has a certain adsorption effect on heavy metal ions and organic pollutants in the black and odorous water body after being put into and stirred and deposited, and the mode of planting aquatic plants is adopted again, so that the general black and odorous water body basically reaches the standard after one year.
Examples 7 to 12 and comparative examples 3 to 4 (Using the water purifying materials of preparation examples 2 to 7 and comparative preparation examples 1 to 2 in this order, respectively)
Simulated wastewater containing the following heavy metal ions and organic pollutants was prepared, and the water purification materials of preparation examples 2 to 7 and comparative preparation examples 1 to 2 were respectively sprinkled into the simulated wastewater in an amount of 400g per ton of simulated wastewater, and stirred for half an hour, and the test results were as follows:
TABLE 3 adsorption Performance test data for examples 7-12 and comparative examples 3-4
As can be seen from table 3 above, the water purification material of the present application has a good adsorption effect on heavy metal ions and phenol, which is an acidic organic substance.
Claims (10)
1. The water body purification material is powdery, and is characterized in that the water body purification material comprises the following preparation raw materials in parts by weight:
10-30 parts of lanthanum modified zeolite
20-40 parts of clay
12-20 parts of rock forming mineral
8-10 parts of clinoptilolite
20-30 parts of silica sol
4 to 8 parts of pozzolana, and
2-10 parts of soluble carbonate.
2. The water body purification material of claim 1, wherein the rock forming mineral is selected from one or two of muscovite and feldspar.
3. The water body purification material of claim 1, wherein the clay mineral is a high cation exchange capacity clay mineral selected from one or more of vermiculite, montmorillonite and illite; more preferably, the rock-forming mineral is selected from albite and the clay is selected from illite.
4. The water purification material of claim 1, wherein the lanthanum modified zeolite is a natural zeolite ground powder mixed with LaCl 3 Filtering the solution with deionized water, drying and calcining.
5. The water body purification material of claim 1, wherein the soluble carbonate is selected from one or more of sodium carbonate, sodium bicarbonate, potassium carbonate and potassium bicarbonate.
6. The preparation method of the water body purification material as claimed in claim 1, which is characterized by comprising the following steps:
1) Crushing lanthanum modified zeolite, clay, rock forming mineral and clinoptilolite into powder with the particle size of less than 5 millimeters, preferably crushing each component into powder with the particle size of 260 meshes or less, then stirring and mixing the powder with silica sol and volcanic ash, and further performing ball milling and mixing to obtain a premix I;
2) Drying the premix I obtained in the step 1), grinding the dried premix I into powder, and then uniformly mixing the powder with soluble carbonate to obtain a premix II; preferably ball milling and mixing;
3) Calcining the premix II obtained in the step 2) at high temperature, quenching, and grinding into powder again to obtain the water body purification material.
7. The method of claim 6, wherein the calcination temperature in step 3) is 850 to 1000 ℃, preferably 850 to 900 ℃.
8. A method for purifying a water body, comprising the step of sprinkling the water body purification material according to any one of claims 1 to 5 or the water body purification material obtained by the preparation method according to any one of claims 6 to 7 on the surface of the water body to be purified.
9. The method of purifying a body of water of claim 8, wherein the method comprises: 1) Scattering the water body purifying material on the surface of the water body to be purified; 2) Disturbing the water body to enable the water body purifying material sprayed on the water area to be treated to be gathered and precipitate floating suspended particle pollutants; 3) Throwing submerged plants to purify pollutants through plant leaves and root systems to inhibit the growth of algae.
10. The method of purifying a body of water of claim 8, wherein the method comprises: 1) Scattering the water body purifying material on the surface of the water body to be purified; 2) Disturbing the water body to enable the water body purifying material sprayed on the water area to be treated to be gathered and precipitate floating suspended particle pollutants; 3) Adding microorganism as a curing carrier into a water body; 4) Throwing submerged plants to purify pollutants through plant leaves and root systems to inhibit the growth of algae.
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