CN112047417A - Diatomite sewage treatment agent and preparation method thereof - Google Patents
Diatomite sewage treatment agent and preparation method thereof Download PDFInfo
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- CN112047417A CN112047417A CN202010798365.9A CN202010798365A CN112047417A CN 112047417 A CN112047417 A CN 112047417A CN 202010798365 A CN202010798365 A CN 202010798365A CN 112047417 A CN112047417 A CN 112047417A
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 139
- 239000010865 sewage Substances 0.000 title claims abstract description 67
- 238000011282 treatment Methods 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000000843 powder Substances 0.000 claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 42
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims description 46
- 239000002245 particle Substances 0.000 claims description 39
- 239000002893 slag Substances 0.000 claims description 37
- 238000000926 separation method Methods 0.000 claims description 29
- 229920002401 polyacrylamide Polymers 0.000 claims description 24
- 239000006004 Quartz sand Substances 0.000 claims description 20
- 150000001450 anions Chemical class 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 15
- 238000012216 screening Methods 0.000 claims description 15
- 239000012257 stirred material Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 9
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 8
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000000746 purification Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 10
- 239000000654 additive Substances 0.000 abstract description 8
- 238000005202 decontamination Methods 0.000 abstract description 8
- 230000003588 decontaminative effect Effects 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 6
- 239000000969 carrier Substances 0.000 abstract description 2
- 150000002484 inorganic compounds Chemical class 0.000 abstract description 2
- 229910010272 inorganic material Inorganic materials 0.000 abstract description 2
- 239000010985 leather Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000008213 purified water Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 17
- 239000011148 porous material Substances 0.000 description 13
- 239000000243 solution Substances 0.000 description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 241000206761 Bacillariophyta Species 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000035 biogenic effect Effects 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 229910000398 iron phosphate Inorganic materials 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011022 opal Substances 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 229920001523 phosphate polymer Polymers 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002464 physical blending Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000012629 purifying agent Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052613 tourmaline Inorganic materials 0.000 description 1
- 239000011032 tourmaline Substances 0.000 description 1
- 229940070527 tourmaline Drugs 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention provides a diatomite sewage treatment agent and a preparation method thereof, wherein a plurality of kinds of diatomite are used as carriers, a plurality of inorganic compounds participate in the action, and the diatomite sewage treatment agent is processed by a special process, the characteristics of diatomite base materials are reasonably utilized, the characteristics of different base materials (calcined products, kiln products and raw diatomite powder) of the diatomite are reasonably utilized, the respective advantages are exerted, the action of additives is fully exerted, and the special process is adopted to organically combine the actions of the diatomite base materials and the additives, so that the purposes of all-round decontamination and purification are achieved. The sewage treatment agent has strong purification capacity and simple requirement on treatment equipment, the purified water body can be recycled, the treatment cost is greatly reduced, the production cost is greatly reduced compared with similar products, and the direct cost is reduced by 35%. The sewage treatment agent has strong applicability, is suitable for sewage treatment in the industrial fields of paper making, pharmacy, leather processing, domestic sewage and the like, and the treated sewage meets the requirements of national discharge standards.
Description
Technical Field
The invention relates to the technical field of industrial and domestic sewage treatment, in particular to a diatomite sewage treatment agent and a preparation method thereof.
Background
With the continuous and deep implementation of the environmental protection policy in China, the field of sewage treatment is also continuously emphasized, and various decontamination products are frequently produced. Especially, the mode and method of applying diatomite to sewage treatment compete with each other, and the diatomite is also paid attention to various industries.
The diatomite has various excellent physicochemical properties such as large specific surface area, good surface electrical property, good chemical stability and the like. Studies over 20 years have shown that: the diatomite which is purified, modified, activated and expanded is an excellent sewage treatment agent. Is technically and economically feasible and is suitable for various sewage treatments. When the sewage is treated, the sewage needs to be modified properly, so that the sewage treatment device has a good treatment effect, is also used for subsequent advanced treatment, has a better effect and has good popularization and application prospects. The diatomite sewage treatment agent is used for treating the wastewater, and the subsequent advanced treatment effect is optimal. In addition, the combination effect of the iron phosphate polymer and the aluminum polychlorid is better. The diatomite sewage treatment technology has good stability and simple operation, is particularly suitable for urban sewage with large proportion of industrial wastewater and large water quality and water quantity fluctuation, and has low sewage treatment cost.
The diatomite sewage treatment technology is a new technology, is incomplete in all aspects, and needs to be further researched and explored theoretically and practically.
The full practice proves that the diatomite has obvious sewage treatment effect due to the characteristic of the tubular structure of the diatomite and has better purification effect on industrial sewage and domestic sewage. However, the diatom sewage treatment agent currently put into use generally has the following disadvantages:
1. the product using calcined diatomite as a base material has high cost, single decontamination effect, poor removal effect on organic matters such as oil stains and suspended biomass, and poor decoloration effect.
2. The product using the diatomite powder as the base material has overlarge viscosity and is not easy to add, the decontamination effect is also poor, and a large amount of jelly is often generated in the sediment, which brings difficulty to the sediment cleaning.
3. In the use process of the existing product, the treated sewage needs to be filtered and purified to realize discharge or secondary utilization.
The defects bring bottlenecks to the application of the diatomite in the field of sewage treatment, and influence the market development. The reason is that the application defects of the existing diatom sewage treatment products are mainly caused by the following aspects:
1. the characteristics of different base materials (calcined products and raw earth powder) of the diatomite can not be reasonably utilized, so that the diatomite can exert respective advantages.
2. The characteristics of additives (flocculants, etc.) cannot be effectively exerted.
3. The processing technology is simple, only physical blending and stirring are carried out, the product is prepared at one time, and the functions of the diatom base material and the additive are not organically combined.
The invention is mainly developed and developed by aiming at the defects of the existing diatom sewage treatment agent and enabling the diatom sewage treatment agent to play an excellent role in the application of the environmental protection field.
Disclosure of Invention
The invention aims to provide a diatomite sewage treatment agent and a preparation method thereof, which reasonably utilize the characteristics of diatomite base materials, fully play the role of an additive, enable the additive to have an organic combination effect and achieve the purposes of omnibearing decontamination and purification.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention aims to provide a diatomite sewage treatment agent which is prepared from the following raw materials in parts by weight:
calcining 20-30 parts of diatomite 1-grade air separation slag particles;
25-35 parts of 1-grade air separation slag particles of kieselguhr treated by kiln combustion;
20-30 parts of diatomite screening powder;
7-12 parts of quartz sand;
2-4 parts of polyaluminium sulfate PAS powder;
2-4 parts of polymeric ferric sulfate SPFS powder;
2-4 parts of Polyacrylamide (PAM) powder;
1-2 parts of water-soluble anion powder.
In a preferred embodiment, the diatomite sewage treatment agent is prepared from the following raw materials in parts by weight:
25 parts of calcined diatomite 1-grade air separation slag particles;
30 parts of kieselguhr 1-grade air separation slag particles are subjected to kiln combustion treatment;
25 parts of diatomite screening powder;
10 parts of quartz sand;
3 parts of polyaluminium sulfate PAS powder;
3 parts of polymeric ferric sulfate SPFS powder;
3 parts of Polyacrylamide (PAM) powder;
1 part of water-soluble anion powder.
In the scheme, the water content of the calcined diatomite grade-1 air separation slag particles is 7-9%.
In the scheme, the water content of the kiln-burned diatomite grade-1 air separation slag particles is 7-9%.
In the scheme, the moisture content of the diatomite screening powder is 7-9%.
In the scheme, the quartz sand is 100-mesh dry quartz sand.
Diatomite is a siliceous rock which is mainly distributed in China, America, Japan, Denmark, France, Romania and other countries, is a biogenic siliceous sedimentary rock and mainly consists of remains of ancient diatoms. The chemical composition of which is SiO2Mainly, SiO can be used2·nH2O represents opal and its variant. The density of the diatomite is 1.9-2.3g/cm3Bulk density of 0.34-0.65g/cm3Specific surface area of 40-65m2Per g, pore volume 0.45-0.98m3The water absorption is 2-4 times of the self volume, the melting point is 1650-1750 ℃, and a special porous structure can be observed under an electron microscope. Calcination and kiln firing are a purification means of diatomite, and the distribution state and surface properties of the particle size of raw soil are changed through the processing procedures of crushing, sorting, calcination, airflow classification, impurity removal and the like of the raw soil. The diatomite raw ore contains a plurality of impurities, and SiO is calcined at high temperature2The content increased from 89.07% to 94.31% with SiO2The purity is improved, the content of organic matters and volatile matters in the diatomite is reduced, and the aperture of the diatomite is enlarged. In the present invention, calcined diatomaceous earth (white clay) is used1-grade air separation slag particles, wherein the diatom ooze has a larger pore (the pore diameter is 1500-3000 nm); 1-grade air separation slag particles of kieselguhr (red material) subjected to kiln firing treatment, wherein the diatom earth (red material) is medium in pore size (the pore diameter is 500-1500 nm); the diatomite powder is screened, and the diatomite pores are small (the pore diameter is less than 500 nm).
The quartz sand is quartz particles formed by crushing and processing quartz stones. Quartz is a nonmetallic mineral, is a hard, wear-resistant, chemically stable silicate mineral, and has SiO as main mineral component2. The color of the quartz sand is milky white or colorless and semitransparent, and the Mohs hardness is 7. In the invention, the quartz sand is used as a filter material, so that the product is loosened, and adhesion and hardening are prevented.
Polyaluminum sulfate (PAS) is a composite high-molecular polymer, has a huge molecular structure and strong adsorption capacity, has a water purification effect superior to that of all traditional inorganic water purifying agents, and has the advantages of large floccules formed after raw water is added, high precipitation speed, high activity and good filterability. And has strong adaptability to various raw water and little influence on the pH value of water (the pH value is 4-11). The purification effect is obvious no matter the turbidity of raw water and the concentration of pollutants in the wastewater. The dosage is less, the corrosivity to equipment and pipelines is less, the operation is convenient, the dosage is less, and the purification cost is low. In the present invention, polyaluminium sulfate having a particle size of 80 to 120 mesh is used.
Polyferric sulfate (SPFS) is an inorganic polymer coagulant with excellent performance, is a faint yellow amorphous powdery solid and is very easy to dissolve in water, and a 10 mass percent aqueous solution is a reddish brown transparent solution and is hygroscopic. Polyferric sulfate is widely used for purification treatment of drinking water, industrial water, various industrial waste water, municipal sewage, sludge dehydration and the like. In the present invention, the polymeric ferric sulfate with the particle size of 100-180 meshes is adopted.
Polyacrylamide (PAM) is a linear organic high molecular polymer and a high molecular water treatment flocculant product, and can adsorb suspended particles in water, so that the particles have a link bridging effect, fine particles form larger flocs, and the sedimentation speed is accelerated. This process is called flocculation because PAM has a good flocculation effect as a flocculant for water treatment and is widely used for sewage treatment. In the present invention, polyacrylamide having a particle size of 100-150 mesh is used.
The water-soluble anion powder is a mineral mixture, and the main components of the water-soluble anion powder are nano tourmaline, nano titanium dioxide, superfine calcium stearate, superfine talcum powder and the like. The water-soluble anion powder has high anion generation amount and far infrared emissivity, and has strong sterilization, purification and deodorization effects on water. In the invention, the product which is sold in the market is adopted, and the products can be produced to be qualified by a plurality of domestic manufacturers such as Shijiazhuang Yi Jia mineral product processing limited company, Hebei Ling shou county hong Kai mineral powder factory and the like.
The second purpose of the invention is to provide a preparation method of the diatomite sewage treatment agent, which is characterized by comprising the following steps:
s1, mixing and stirring the calcined diatomite 1-grade air separation slag particles (white slag) and PAS in parts by weight, adding clear water, continuously stirring to obtain a stirred material 1, and drying until the water content is 7-9% for later use;
the technical process aims at: the PAS molecules are fully adsorbed by utilizing the larger characteristic of the white slag pipe hole so as to realize the purpose of slow release.
S2, mixing and stirring the kiln-burned diatomite grade-1 air separation slag particles (red material slag) and SPFS in parts by weight, adding clear water, continuously stirring to obtain a stirred material 2, and drying until the water content is 7-9% for later use;
the technical process aims at: the SPFS molecules are fully adsorbed by utilizing the uniform characteristic of the pores of the red slag pipe, so that the aim of slow release is fulfilled;
s3, mixing and stirring the diatomite screening powder and PAM in parts by weight, adding clear water, continuously stirring to obtain a stirred material 3, and drying until the water content is 7-9% for later use;
the technical process aims at: the PAM molecules are fully adsorbed by utilizing the characteristics of small and dense pores of the soil screening soil powder, so that the aim of slow release is fulfilled;
and S4, combining the three materials to be used, adding the water-soluble anion powder and the quartz sand in parts by weight, fully stirring, and completing the preparation after the heating temperature of the materials reaches 45 ℃.
The technological process aims at utilizing the granular action of quartz sand to loosen the product and preventing adhesion and hardening, and adding water-soluble anion powder to play the role of sterilization and disinfection.
As a preferred embodiment, the preparation method of the diatomite sewage treatment agent comprises the following steps:
s1, mixing and stirring the calcined diatomite grade-1 air separation slag particles and PAS in parts by weight, adding clear water in an amount which is 1/5 of the weight of the calcined diatomite grade-1 air separation slag particles, continuously stirring to obtain a stirred material 1, and drying until the water content is 8% for later use;
s2, mixing and stirring the kiln-burned diatomite grade-1 air separation slag particles and SPFS in parts by weight, adding clear water in an amount which is 1/6 of the weight of the kiln-burned diatomite grade-1 air separation slag particles, continuously stirring to obtain a stirred material 2, and drying until the water content is 8% for later use;
s3, mixing and stirring the diatomite screening powder and PAM in parts by weight, adding clear water in an amount which is 1/5 of the weight of the diatomite screening powder, continuously stirring to obtain a stirred material 3, and drying until the water content is 8% for later use;
and S4, combining the three materials to be used, adding the water-soluble anion powder and the quartz sand in parts by weight, fully stirring, and completing the preparation after the heating temperature of the materials reaches 45 ℃.
In the above scheme, the stirring time is 5-10 minutes.
Compared with the prior art, the invention has the beneficial effects that:
the diatomite sewage treatment agent and the preparation method thereof provided by the invention adopt a plurality of kinds of diatomite as carriers, simultaneously participate in the action of a plurality of inorganic compounds, and are processed by a special process, the characteristics of diatomite base materials are reasonably utilized, the characteristics of different base materials (calcined products, kiln products and raw diatomite powder) of the diatomite are reasonably utilized, the respective advantages are exerted, the action of additives is fully exerted, and the special process is adopted to organically combine the actions of the diatomite base materials and the additives, thereby achieving the purposes of all-round decontamination and purification. The diatomite sewage treatment agent has strong purification capacity and simple requirement on treatment equipment, the purified water body can be recycled, the treatment cost is greatly reduced, and meanwhile, the production cost is greatly reduced compared with similar products, and the direct cost is reduced by 35%. The diatomite sewage treatment agent has strong applicability, is suitable for sewage treatment in the industrial fields of paper making, pharmacy, leather processing, domestic sewage and the like, and the treated sewage meets the requirements of national discharge standards.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a photograph of a wastewater before treatment according to example 1 of the present invention.
FIG. 2 is a photograph of the sewage treated by the diatomite sewage treatment agent according to example 1 of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the following embodiments. The raw materials adopted by the invention are all common commercial products and can be purchased from the market.
Example 1
1. Raw materials and dosage (100 kg as scalar quantity)
Taking 25kg of calcined diatomite (white material) 1-grade air separation slag particles, wherein the water content is 8 percent, and the diatom pore of the material is larger;
30kg of kiln-burned diatomite (red material) grade-1 air-separated slag particles with water content of 8 percent are used, and the material is medium in diatomite pores;
screening 25kg of diatomite powder by using diatomite, wherein the water content is 8 percent, and the diatomite hole is smaller;
10kg of dry quartz sand with 100 meshes is taken
Totaling 90kg
2. Other materials involved (scalar 100 kg)
3kg of polymeric aluminum sulfate PAS (powder)
Polymeric ferric sulfate SPFS (powdered)
Polyacrylamide PAM (powder form) 3kg
Water-soluble anion powder 1kg
3. Process steps (scalar quantity 100 kg)
(1) Putting 25kg of white material slag and 3kg of PAS into a stirring tank, starting the stirring tank to stir for 5 minutes, uniformly adding 5kg of clear water into the tank to continue stirring for 5 minutes, discharging the stirred material, putting into a dryer, and drying until the water content is 8% for later use.
(2) Putting 30kg of red material residues and 3kg of SPFS into a stirring tank, starting the stirring tank to stir for 5 minutes, uniformly adding 5kg of clear water into the tank to continue stirring for 5 minutes, discharging the stirred material, putting into a dryer, and drying until the water content is 8% for later use.
(3) Putting 25kg of original soil screening soil powder and 3kg of PAM into a stirring tank, starting the stirring tank to stir for 5 minutes, uniformly adding 5kg of clear water into the tank to continue stirring for 5 minutes, discharging the stirred material, putting into a dryer, and drying until the water content is 8% for later use.
(4) Mixing the three materials to be used, putting the materials into a stirring tank, adding 1kg of water-soluble anion powder and 10kg of 100-mesh dry quartz sand, fully stirring for about 10 minutes, stopping the machine when the heating temperature of the materials reaches 45 ℃, discharging and bagging after the preparation is finished.
The diatomite sewage treatment agent prepared by the invention can be uniformly added according to the proportion of 0.01-1% of sewage amount when in use.
Experimental detection
Taking 500 ml of mixed sewage of papermaking, pharmacy and life, adding 5g of the product of the embodiment, fully stirring, standing, and after 1 minute, flocculating the sewage; after 2 minutes, the flocculate begins to settle by layers; settling is completed after 10 minutes; after 15 minutes, the sewage after decontamination and purification is clear and transparent. The photographs before and after the sewage treatment are shown in FIGS. 1 and 2.
And (3) taking a sewage sample before and after decontamination and purification for water quality monitoring, wherein the detection indexes and results are shown in table 1.
TABLE 1 test results of sampling of sewage before and after treatment
| Index (I) | Before treatment | After treatment |
| BOD | 265 | 8.9 |
| COD | 795 | 198 |
| pH | 7.5 | 7.9 |
| SS | 265 | 10 |
| Color intensity | 35 times of | 7 times of |
| Ammonia nitrogen | 30 | 8.5 |
| Total nitrogen | 68 | 32 |
| Total phosphorus | 5.8 | 2.6 |
Note: COD after treatment: 198, the main reason for the higher level is that the treated sewage is not aerated.
Example 2
1. Raw materials and dosage (100 kg as scalar quantity)
20kg of calcined diatomite (white material) grade-1 air separation slag particles are used, the water content is 7 percent, and the pores of the diatomite are large;
taking 35kg of kiln-burned diatomite (red material) grade-1 air-separated slag particles with water content of 7 percent, wherein the material is medium in diatomite hole;
20kg of diatomite powder with the water content of 7 percent is screened by using diatomite, and the diatomite hole is smaller;
taking 12kg of 100-mesh dry quartz sand
In total 87kg
2. Other materials involved (scalar 100 kg)
4kg of polymeric aluminum sulfate PAS (powder)
Polymeric ferric sulfate SPFS (powdered)
Polyacrylamide PAM (powder) 4kg
Water-soluble anion powder 1kg
3. The process steps were performed simultaneously with example 1.
4. The sewage treatment results are similar to those of example 1.
Example 3
1. Raw materials and dosage (100 kg as scalar quantity)
Taking 30kg of calcined diatomite (white material) grade-1 air separation slag particles, wherein the water content is 9 percent, and the diatom pore of the material is larger;
25kg of kiln-burned diatomite (red material) 1-grade air separation slag particles with water content of 9 percent are used, and the material is medium in diatomite holes;
screening 30kg of diatomite powder by using raw diatomite, wherein the water content is 9 percent, and the diatomite hole is smaller;
taking 7kg of 100-mesh dry quartz sand
92kg in total
2. Other materials involved (scalar 100 kg)
2kg of polyaluminum sulfate PAS (powder)
2kg of polymeric ferric sulfate SPFS (powdered)
2kg of polyacrylamide PAM (powder)
2kg of water-soluble anion powder
3. The process steps were performed simultaneously with example 1.
4. The sewage treatment results are similar to those of example 1.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The diatomite sewage treatment agent is characterized by comprising the following raw materials in parts by weight:
calcining 20-30 parts of diatomite 1-grade air separation slag particles;
25-35 parts of 1-grade air separation slag particles of kieselguhr treated by kiln combustion;
20-30 parts of diatomite screening powder;
7-12 parts of quartz sand;
2-4 parts of polyaluminium sulfate PAS powder;
2-4 parts of polymeric ferric sulfate SPFS powder;
2-4 parts of Polyacrylamide (PAM) powder;
1-2 parts of water-soluble anion powder.
2. The diatomite sewage treatment agent according to claim 1, which is characterized by comprising the following raw materials in parts by weight:
25 parts of calcined diatomite 1-grade air separation slag particles;
30 parts of kieselguhr 1-grade air separation slag particles are subjected to kiln combustion treatment;
25 parts of diatomite screening powder;
10 parts of quartz sand;
3 parts of polyaluminium sulfate PAS powder;
3 parts of polymeric ferric sulfate SPFS powder;
and 3 parts of polyacrylamide PAM powder.
3. 1 part of water-soluble anion powder.
4. The diatomite sewage treatment agent according to claim 1 or 2, wherein the water content of the calcined diatomite 1-grade air separation slag particles is 7-9%.
5. The diatomite sewage treatment agent according to claim 1 or 2, wherein the water content of the kiln-burned diatomite 1-grade air-separated slag particles is 7-9%.
6. The diatomite sewage treatment agent according to claim 1 or 2, wherein the water content of the diatomite raw soil powder is 7-9%.
7. The diatomite sewage treatment agent according to claim 1 or 2, wherein the quartz sand is 100-mesh dry quartz sand.
8. The method for preparing a diatomite sewage treatment agent according to any one of claims 1-7, comprising the following steps:
s1, mixing and stirring the calcined diatomite 1-grade air separation slag particles and PAS in parts by weight, adding clear water, continuously stirring to obtain a stirred material 1, and drying until the water content is 7-9% for later use;
s2, mixing and stirring the kiln-burned diatomite grade-1 air separation slag particles and SPFS in parts by weight, adding clear water, continuously stirring to obtain a stirred material 2, and drying until the water content is 7-9% for later use;
s3, mixing and stirring the diatomite screening powder and PAM in parts by weight, adding clear water, continuously stirring to obtain a stirred material 3, and drying until the water content is 7-9% for later use;
and S4, combining the three materials to be used, adding the water-soluble anion powder and the quartz sand in parts by weight, fully stirring, and completing the preparation after the heating temperature of the materials reaches 45 ℃.
9. The preparation method of the diatomite sewage treatment agent according to claim 8, comprising the following steps of:
s1, mixing and stirring the calcined diatomite grade-1 air separation slag particles and PAS in parts by weight, adding clear water in an amount which is 1/5 of the weight of the calcined diatomite grade-1 air separation slag particles, continuously stirring to obtain a stirred material 1, and drying until the water content is 8% for later use;
s2, mixing and stirring the kiln-burned diatomite grade-1 air separation slag particles and SPFS in parts by weight, adding clear water in an amount which is 1/6 of the weight of the kiln-burned diatomite grade-1 air separation slag particles, continuously stirring to obtain a stirred material 2, and drying until the water content is 8% for later use;
s3, mixing and stirring the diatomite screening powder and PAM in parts by weight, adding clear water in an amount which is 1/5 of the weight of the diatomite screening powder, continuously stirring to obtain a stirred material 3, and drying until the water content is 8% for later use;
and S4, combining the three materials to be used, adding the water-soluble anion powder and the quartz sand in parts by weight, fully stirring, and completing the preparation after the heating temperature of the materials reaches 45 ℃.
10. The method for preparing a diatomite sewage treatment agent as claimed in claim 8 or 9, wherein the stirring time is 5-10 minutes.
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| CN113636631A (en) * | 2021-08-26 | 2021-11-12 | 唐山洁达环保科技有限公司 | Composite water quality agglutination purifying agent and preparation method thereof |
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