CN105130011B - Diatomite sewage-treating agent, preparation method and its technology application - Google Patents
Diatomite sewage-treating agent, preparation method and its technology application Download PDFInfo
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- CN105130011B CN105130011B CN201510565677.4A CN201510565677A CN105130011B CN 105130011 B CN105130011 B CN 105130011B CN 201510565677 A CN201510565677 A CN 201510565677A CN 105130011 B CN105130011 B CN 105130011B
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Abstract
The present invention relates to technical field of sewage, specifically discloses a kind of diatomite sewage-treating agent, preparation method and its technology application.The diatomite sewage-treating agent includes modification infusorial earth and is attached to the microbial bacterial of the modification infusorial earth.The preparation method of the diatomite sewage-treating agent includes：1) diatomite removal of impurities is handled；2) diatomite surface modification treatment；3) diatomite modified is handled；4) diatomite carries out mixed processing with microbial bacterial.Diatomite sewage-treating agent of the present invention is used in sewage disposal, easily produce big and closely knit flco, and sinking speed is fast, multiple-microorganism bacterium is complemented each other after pollutant-removing system is entered improves the contaminant removal capacity of biochemistry pool jointly, test result indicates that diatomite combines the biological diatomite sewage-treating agent to be formed with the Mixed Microbes of multiple-microorganism bacterium to pollutant such as P, NH4N, CODcr average removal rate reachable 90% and more than.
Description
Technical field
The present invention relates to technical field of sewage, more particularly to a kind of diatomite sewage-treating agent, preparation method and its
Technology application.
Background technology
As global economy constantly grows continuously and fast and industrialized continuous development, industrial water, urbanite water consumption etc.
Caused by water environment pollution problem become increasingly conspicuous, the source water eutrophication such as reservoir, lake is serious, especially in China, this
Kind situation is particularly acute.Investigation result is shown:In national 103 Main Lakes:Mesotrophic lake pool has 32, and Hyper-eutrophic has
71；Middle 324, nutrition reservoir in 455 major reservoirs, 131, eutrophy reservoir, it is short that this seriously exacerbates China's water resource
Scarce situation, the health of safe drinking water and the people to urban and rural residents cause larger threat.Therefore, wastewater treatment has been
As one of water prevention and cure of pollution and the important engineering technology means for realizing sustainable utilization of water resource, the hand of wastewater treatment is taken
Section, it is important to protecting water environment and alleviation water quality type shortage of water resources problem to have the function that, it can also ensure China's economy
Sustainable development.
Domestic conventional sewage-treating agent mainly has aluminium polychloride (PAC) and polyacrylamide (PAM) at present.But
There is throwing amount and require larger in PAC, alumen ustum is small and dense, and sinking speed is slow when being used alone as flocculant, wastewater treatment efficiency is not
Substantially, while also there is the shortcomings of cost of transportation is high in liquid aluminium polychloride water purification agent.PAM flocculating effects are good, but expensive,
The input cost of sewage disposal can be increased, while handled sewage is easily caused during sewage is handled using PAM
COD, ammonia nitrogen and salinity increase, so as to cause the processing cost of subsequent treatment process further surging.In addition existing flocculation
There is the problem of pollutant removal index is single (such as PAC and PAM can only remove SS, a part of phosphorus and heavy metal) in agent, also
Other process matched therewiths are needed to realize the qualified discharge of sewage.
Diatomite sewage disposal technology is a kind of high-efficiency sewage treatment technology developed in recent years, is widely used
In the processing of all types of sewage, have a better effect.But current used diatomite sewage disposal skill
Art is mostly that diatomite passes through ore dressing, purification, modified that modification infusorial earth input diatomite processing pond plays a role.Diatom essence
Native sewage-treating agent acts on of both mainly having during use:First, itself there is preferable flocculating effect,
Used in diatomite processing pond as flocculant, reducing PAC, PAM usage amount reduces the risk that secondary pollution is produced to environment；
Microorganism carrier is used as second, being back in biochemistry pool.But find it in actual use there is also certain to ask
Topic, that is, if reflux ratio and pressure mud FREQUENCY CONTROL are bad, the content of microorganisms for being easily caused biochemistry pool loses excessive, Yi Jisheng
The problems such as function in change pond gradually decays, causes with the diatomite sewage disposal agent content put into needed for the extension of usage time
Gradually increase, equally can also improve cost of sewage disposal.Therefore how traveling one is entered to existing diatomite sewage-treating agent
The optimization processing of step, biochemistry pool content of microorganisms is caused to decline to solve existing long-term use during real use, place
The problem of efficiency is relatively low is managed, has become the key subjects of current sewage disposal.
The content of the invention
The embodiment of the present invention provides a kind of diatomite sewage-treating agent, preparation method, and its object is to overcome existing diatom
The native sewage-treating agent of essence is biochemistry pool content of microorganisms during long-term use declines, detersive efficiency is relatively low the problems such as.
The another object of the embodiment of the present invention is the technology application for providing the diatomite sewage-treating agent.
To achieve the above object of the invention, the technical scheme that the embodiment of the present invention uses is as follows:
A kind of diatomite sewage-treating agent, including modification infusorial earth and the microorganism that is attached on the modification infusorial earth it is thin
Bacterium.
And the preparation method of above-mentioned diatomite sewage-treating agent, comprise the following steps:
Step S01, carry out heating removal of impurities processing after diatomite is mixed with sulfuric acid；
Step S02, using the modification liquid containing metal cation and flocculant to the diatomite after being cleaned in step S01
Carry out surface modification treatment；
Step S03, the diatomite modified to surface in step S03 are carried out at pH regulations, sterilizing, drying and grinding
Reason, obtain modification infusorial earth；
Step S04, mixed processing is carried out to the modification infusorial earth and microbial bacterial.
And correspondingly, a kind of sewage water treatment method, the sewage-treating agent used during sewage disposal is by described above
Diatomite sewage-treating agent provide；And/or by the preparation method preparation according to diatomite sewage-treating agent described above
Diatomite sewage-treating agent provides.
The diatomite sewage-treating agent of above-described embodiment, comprising modification infusorial earth and microbial bacterial, micro- silicon can be ensured
The value volume and range of product of microorganism in diatomaceous earth sewage-treating agent, the microbial bacterial in the diatomite sewage-treating agent can decompose it
His microorganism, and microbial bacterial can be condensed in modification infusorial earth so that and the diatomite sewage-treating agent has decontamination
The advantages that effect is good, and microbial biomass is not easy loss.
The preparation method of the diatomite sewage-treating agent of above-described embodiment, mixed using coagulant with microbial bacterial
Prepare, raw material coagulant and the microbial bacterial of use can realize good cohesion, and the microbial bacterial point formed
Other microorganisms and difficult for drop-off are solved, preparation is simple for use, is appropriate for mass producing.
In above-described embodiment, diatomite sewage-treating agent is used in sewage disposal, and diatomite sewage-treating agent easily produces
Big and closely knit flco, and sinking speed is fast, multiple-microorganism bacterium is complemented each other after pollutant-removing system is entered improves life jointly
Change the contaminant removal capacity in pond, test result indicates that diatomite combines the diatom to be formed with the Mixed Microbes of multiple-microorganism bacterium
Native sewage-treating agent is to pollutant such as P, NH4- N, CODcr average removal rate reachable 90% and more than.
Figure of description
Fig. 1 is diatomite of embodiment of the present invention sewage-treating agent and the decontamination experiment of commercially available diatomite flocculant sewage P, NH4-
N, CODcr clearances schematic diagram.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, following examples, the present invention is carried out
It is further described.It should be appreciated that specific embodiment described herein is not used to limit this only to explain the present invention
Invention.
The embodiments of the invention provide a kind of diatomite sewage-treating agent, including modification infusorial earth and it is attached to the modification
Microbial bacterial on diatomite.
Wherein, in any embodiment, used modification infusorial earth is derived from conventional diatomite.Specifically by conventional diatom
The sulfuric acid that soil is 2%~10% with mass concentration is (1~5) according to solid-liquid mass ratio:1 ratio carries out mixing abatement processes,
Incorporation time 10min~20min, then at 100 DEG C~110 DEG C drying and it is finely ground；By the conventional diatomite of removal of impurities processing
With modification liquid according to solid-liquid mass ratio be 1:The ratio of (1~5) carry out soak modification and through overregulate pH, sterilizing, drying,
Milled processed obtains modification infusorial earth.
In one embodiment, preferably 105 DEG C of drying temperature.
In any embodiment, above-mentioned modification liquid is by being the solution containing metal cation according to volume ratio:Flocculant=1:
(1~2) form, wherein, the solution containing metal cation presses body by ferric chloride solution, aluminum sulfate solution, calcium chloride solution
Product is than (1~3):(0~5):(0~2) mixes；Flocculant is according to parts by weight by aluminium polychloride, polyacrylamide
(1~2):(3~7) mix.
In any embodiment, iron chloride mass concentration is 1%~10%, aluminum sulfate mass concentration is 5%~15%, chlorine
It is 0.01%~3% to change calcium mass concentration, and for these cationic solutions under the concentration, the phosphorus of free state can reach maximally effective
Convert and fixed；Aluminium polychloride mass concentration is 30%~70%, and polyacrylamide mass concentration is 0.1 ‰~2 ‰.
In any embodiment, use mass concentration be 10%~25% sodium hydroxide to by modification liquid processing silicon
Diatomaceous earth carries out the regulation of pH value, and pH is adjusted to neutrality.
In any embodiment, using high pressure steam sterilization, the temperature of high pressure steam sterilization is 120 DEG C~125 DEG C.One
In specific embodiment, preferably 121 DEG C of the temperature of high pressure steam sterilization.121 DEG C are microorganism sterilizing optimum temperature, in the condition
Under, it can thoroughly kill microbial bacterial present in diatomite.In any embodiment, the silicon after above-mentioned high pressure steam sterilization
Diatomaceous earth, under the conditions of 100 DEG C~120 DEG C dry, this drying temperature is moderate, be advantageous to it is energy-saving, and drying time do not grow, have
Ensure.
In any embodiment, dried diatomite, the mesh of 100 mesh~200 is ground to.Empirical tests, when diatomite particle diameter
In 100 mesh~200 mesh, in sewage disposal process, can quickly dissolve scattered, fast onset scavenging effect.
In any embodiment, the modification infusorial earth of acquisition just forms diatomite dirt after need to being mixed with microbial bacterial
Water treatment agent.
In any embodiment, microbial bacterial includes nitrobacteria, saccharomycete, photosynthetic bacteria, bacillus and lactic acid
Bacterium；Or including denitrifying bacteria, photosynthetic bacteria and lactic acid bacteria.
In any embodiment, according to modification infusorial earth, nitrobacteria, saccharomycete, photosynthetic bacteria, bacillus weight
Number ratio is (80~100):(20~40):(1~10):(10~15):(5~10)；Or modification infusorial earth, denitrification are thin
Bacterium, photosynthetic bacteria, lactic acid bacteria (80~100) by ratio of weight and the number of copies:(10~30):(20~30):(1~10).
In any embodiment, microbial bacterial is (1~3) hundred million/gram in the quantity of diatomite sewage-treating agent.
Correspondingly, the embodiment of the present invention also provides a kind of preparation method of above-mentioned diatomite sewage-treating agent.Implement one
In example, the preparation method of the diatomite sewage-treating agent comprises the following steps：
Step S01, carry out heating removal of impurities processing after diatomite is mixed with sulfuric acid；
Step S02, using the modification liquid containing metal cation and flocculant to the diatomite after being cleaned in step S01
Carry out surface modification treatment；
Step S03, the diatomite modified to surface in step S03 are carried out at pH regulations, sterilizing, drying and grinding
Reason, obtain modification infusorial earth；
Step S04, mixed processing is carried out to the modification infusorial earth and microbial bacterial.
Specifically, it is (1~5) according to the solid-liquid mass ratio of diatomite and sulfuric acid in above-mentioned steps S01:1, which carries out mixing, removes
Miscellaneous, by removal of impurities, acid-soluble material is removed in diatomite so that diatomaceous effective surface area increase.
Preferably, the mass concentration of sulfuric acid is 2%~10%, is at room temperature mixed the diatomite and the sulfuric acid
10min~20min is closed, then 100 DEG C~110 DEG C are dried.In a particular embodiment, also can be according to situation about actually stirring
Adjust automatically mixing time.
Specifically, in above-mentioned steps S02, the solution containing metal cation is molten by ferric chloride solution, aluminum sulfate in modification liquid
Liquid, calcium chloride solution are by volume (1~3):(0~5):(0~2) mixes, and iron content, aluminum ions solution are in depolluting processes
In, the phosphorus easily in absorption effluent, form iron bound phosphorus and aluminium bound phosphorus, caused iron bound phosphorus and aluminium bound phosphorus
Further converted to relatively stable calcium bound phosphorus, the final clearance for improving phosphorus.And flocculant is by aluminium polychloride, poly- third
Acrylamide is (1~2) according to parts by weight:(3~7) mix.
Preferably, iron chloride mass concentration is 1%~10%, aluminum sulfate mass concentration is 5%~15%, calcium chloride quality
Concentration is 0.01%~3%；Under the concentration, the phosphorus of free state can reach maximally effective conversion and consolidate these cationic solutions
It is fixed.Preferably, aluminium polychloride mass concentration is 30%~70%, and polyacrylamide mass concentration is 0.1 ‰~2 ‰, polymerization
The coagulant that aluminium chloride and polyacrylamide are formed is mixed at this concentration, is advantageous to give full play to aluminium polychloride, is gathered
Acrylamide and diatomaceous collaboration flocculation, improve flocculating effect.
Specifically, in above-mentioned steps S03, when the modified diatomite in surface carries out pH regulations, preferred sodium hydroxide,
Sodium hydroxide is cheap, and alkalescence is strong, is easy and fast to adjust pH value to neutral or meta-alkalescence.
Preferably, when the modified diatomite in surface sterilizes, using high pressure steam sterilization.Due to modified diatom
Soil is pulverulent solids, therefore, during high pressure steam sterilization can reach maximally effective bactericidal effect.
Preferably, during drying process, preferable temperature is 100 DEG C~120 DEG C.
Preferably, processing is ground using ball mill, is milled to diatomaceous mesh number as the mesh of 100 mesh~200.
Specifically, in above-mentioned steps S04, during the mixed processing of modification infusorial earth and microbial bacterial, preferably according to modification
Diatomite, nitrobacteria, saccharomycete, photosynthetic bacteria, the parts by weight of bacillus are (80~100):(20~40):(1~
10):(10~15):(5~10)；Or modification infusorial earth, denitrifying bacteria, photosynthetic bacteria, lactic acid bacteria by ratio of weight and the number of copies (80~
100):(10~30):(20~30):(1~10), to ensure to change the number of microbial bacterial in the diatomite sewage-treating agent of acquisition
Amount reaches (1~3) hundred million/gram.
Preferably, when modified diatomite carries out mixed processing with microbial bacterial, mixed using immersion way.I.e.
Modification infusorial earth is soaked with microbial bacterial agent, is then freeze-dried at low ambient temperatures, freeze-drying temperature is -55 DEG C~0 DEG C.
So that loading microorganisms above modification infusorial earth, the complex of formation microorganism-modification infusorial earth, to strengthen modification infusorial earth
Absorption property and pollutants removal rate.Specifically, because the inside of modification infusorial earth is honeycomb-like pore structure, and this some holes
Gap is big compared with microbial cell, and therefore, it is empty that microorganism can be limited to it by the modification infusorial earth soaked by microbial bacterial agent
Between in structure, and the microbial bacterial that can ensure to be limited inside modification infusorial earth space structure has certain activity.
With the addition of in above-mentioned modification infusorial earth nitrobacteria, saccharomycete, photosynthetic bacteria, bacillus or denitrifying bacteria,
The diatomite sewage-treating agent that photosynthetic bacteria, lactic acid bacteria are formed, these microbial bacterials enter dirty in diatomite sewage-treating agent
Complement each other the common contaminant removal capacity for improving biochemistry pool after water treatment system.
Wherein, photosynthetic bacteria group can produce the metabolites such as some amino acid, promote the increasing of lactic acid bacteria, saccharomycete etc.
Grow；Lactic acid bacteria forms lactic acid by carbohydrate caused by intake photosynthetic bacteria, saccharomycete, suppresses other harmful microbe activities, is
Nitrobacteria, denitrifying bacteria and bacillus provide the environment suitably survived；Saccharomycete can utilize ammonia caused by photosynthetic bacteria
Base acid, carbohydrate and other organic matters promote nitrobacteria, denitrifying bacteria and bacillus etc. beneficial to micro- life without fermenting power is produced
The propagation of thing；Nitrobacteria, denitrifying bacteria, bacillus are the major microorganisms of the contaminants removal such as nitrogen, phosphorus in sewage,
The favorable environment built using lactic acid bacteria, photosynthetic bacteria, saccharomycete improves the treatment effeciency of biochemistry pool sewage jointly.
The preparation method of diatomite sewage-treating agent provided in an embodiment of the present invention, is entered using coagulant and microbial bacterial
Row is mixed with, and raw material coagulant and the microbial bacterial of use can realize good cohesion, and the microorganism formed
Bacterium decomposes other microorganisms and difficult for drop-off, and preparation is simple for use, is appropriate for mass producing.
Correspondingly, the above-mentioned diatomite sewage-treating agent of the embodiment of the present invention can be applied in sewage disposal.By the present invention
When the diatomite sewage-treating agent of embodiment is used for sewage disposal, diatomite sewage-treating agent easily produces big and closely knit wadding
Body, and sinking speed is fast, multiple-microorganism bacterium is complemented each other after pollutant-removing system is entered improves the pollutant of biochemistry pool jointly
Removal ability, test result indicates that diatomite combines the diatomite sewage-treating agent to be formed with the Mixed Microbes of multiple-microorganism bacterium
To pollutant such as P, NH4- N, CODcr average removal rate reachable 90% and more than.
Above-mentioned diatomite sewage-treating agent preparation method is illustrated below by way of multiple embodiments.
Embodiment 1
A kind of diatomite sewage-treating agent preparation method, comprises the following steps：
1) take 5g routines diatomite and 5mL 5% sulfuric acid solution to mix, stir 20min at normal temperatures, and in 105 DEG C of bakings
It is dry finely ground；
2) diatomite in step 1) is shifted and be sufficiently mixed as in beaker with 10mL modification liquids, chlorine is polymerize in modification liquid
The concentration for changing aluminium, iron chloride and polyacrylamide is respectively 35%, 6% and 0.14 ‰, stirs 30min, and adjusted with sodium hydroxide
PH is saved to neutrality；
3) product that step 2) obtains is transferred in high-pressure steam sterilizing pan, 121 DEG C of high pressure steam sterilizations, in 100 DEG C
Middle drying, grind and cross 100 mesh sieves；
4) take 10 parts of diatomite after sieving in step 3) and 3 parts of nitrobacterias, 1 part of saccharomycete, 1 part of photosynthetic bacteria, 1 part
Bacillus is mixed, and forms diatomite sewage-treating agent.
Embodiment 2
A kind of diatomite sewage-treating agent preparation method, comprises the following steps：
1) take 5g routines diatomite to be mixed with 5mL2% sulfuric acid solution, stir 15min at normal temperatures, and in 100 DEG C of bakings
It is dry finely ground；
2) diatomite in step 1) is shifted and be sufficiently mixed as in beaker with 7.5mL modification liquids, is polymerize in modification liquid
Aluminium chloride, iron chloride, aluminum sulfate, the concentration of calcium chloride and polyacrylamide are respectively 35%, 6%, 5%, 0.04% and
0.14 ‰, 20min is stirred, and pH is adjusted to neutrality with sodium hydroxide；
3) product that step 2) obtains is transferred in high-pressure steam sterilizing pan, 120 DEG C of high pressure steam sterilizations, in 120 DEG C
Middle drying, grind and cross 200 mesh sieves；
4) 10 parts of diatomite after being sieved in step 3) is taken to be carried out with 3 parts of nitrobacterias, 2 parts of photosynthetic bacterias, 1 part of lactic acid bacteria
Immersion mixing, is then freeze-dried under -55 DEG C of environment, forms diatomite sewage-treating agent.
Embodiment 3
A kind of diatomite sewage-treating agent preparation method, comprises the following steps：
1) take 5g routines diatomite to be mixed with 5mL10% sulfuric acid solution, stir 120min at normal temperatures, and in 100 DEG C
Dry finely ground；
2) diatomite in step 1) is shifted and be sufficiently mixed as in beaker with 5mL modification liquids, chlorine is polymerize in modification liquid
The concentration for changing aluminium, iron chloride and polyacrylamide is respectively 35%, 6%, 5%, 0.04% and 0.14 ‰, stirs 20min, is used in combination
Sodium hydroxide adjusts pH to neutrality；
3) product that step 2) obtains is transferred in high-pressure steam sterilizing pan, 125 DEG C of high pressure steam sterilizations, in 120 DEG C
Middle drying, grind and cross 200 mesh sieves；
4) take 10 parts of diatomite after sieving in step 3) and 3 parts of nitrobacterias, 1 part of saccharomycete, 1 part of photosynthetic bacteria, 1 part
Bacillus carries out immersion mixing, is then freeze-dried under 0 DEG C of environment, forms diatomite sewage-treating agent.
Use embodiment
Flowed back again after being added to Aerobic Pond, depositing reservoir using the diatomite sewage-treating agent prepared in above-described embodiment 1~3
Into Aerobic Pond, usage time 2 months.It is as shown in table 1 to measure phosphorus in water, ammonia nitrogen, COD average removal rate.
The embodiment 1~3 of table 1 is used for the removal situation for handling sewage each material in sewage after 2 months
| Project | Phosphorus/% | Ammonia nitrogen/% | COD/% |
| Embodiment 1 | 92 | 94 | 95 |
| Embodiment 2 | 90 | 95 | 97 |
| Embodiment 3 | 97 | 92 | 98 |
As known from Table 1, the diatomite sewage-treating agent prepared by the embodiment of the present invention is in sewage dephosphorization, ammonia nitrogen and COD,
For the clearance of phosphorus, ammonia nitrogen and COD more than 90%, scavenging effect is obvious.
In order to preferably compare the diatomite sewage-treating agent of preparation of the embodiment of the present invention with commercially available corresponding product to sewage
Middle phosphorus (P), ammonia nitrogen (NH4- N), COD (CODcr) average removal rate, the embodiment of the present invention also using embodiment 1 prepare diatom
Native sewage-treating agent has been contrast experiment with commercially available diatomite flocculant, in view of this product performance comparision is stable, therefore only chooses
The conduct of embodiment 1.
This experiment is mainly carried out using 2 sets of homemade simulation systems.To accelerate experiment process, the activity in simulation system is dirty
Mud is derived from the biochemistry pool of sewage treatment plants, and water inlet is also identical with the water inlet of sewage treatment plants.Daily by two systems with
Same water is run, and the amount of its diatomite sewage-treating agent added daily and the amount of commercially available diatomite flocculant are complete
It is exactly the same.Then water outlet twice is gathered weekly to be detected and calculate ammonia nitrogen (NH4- N), COD (CODcr), phosphorus (P) removal
Rate.Continuously two months last all data of operation averagely characterize the practice effect of two kinds of diatomite sewage-treating agents.It is real
Test shown in result accompanying drawing 1.
From fig. 1, it can be seen that by the cycle of operation of 2 months, commercially available diatomite flocculant product system is to P, NH in sewage4-N、
CODcr average removal rate is respectively 80% ± 2%, 70% ± 2.4%, 75% ± 1.3%；Prepared by this formulation Example 1
Sample is to P, NH4- N, CODcr average removal rate are respectively 90% ± 1%, 89.5% ± 1.7%, 87.3% ± 2.1%, base
Clearance is more than 90% in sheet, and this formulation samples is to the clearance of pollutant obviously higher than commercially available prod.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (5)
- A kind of 1. diatomite sewage-treating agent, it is characterised in that：Including modification infusorial earth and it is attached to the modification infusorial earth Microbial bacterial；The microbial bacterial includes nitrobacteria, saccharomycete, photosynthetic bacteria, bacillus and lactic acid bacteria；Or including Denitrifying bacteria, photosynthetic bacteria and lactic acid bacteria；Wherein, the modification infusorial earth is modified as follows：Carry out heating removal of impurities processing after diatomite is mixed with sulfuric acid；Surface modification treatment is carried out to the diatomite after removal of impurities using the modification liquid containing metal cation and flocculant；PH regulations, sterilizing, drying and milled processed are carried out to the diatomite after surface modification treatment, obtain modified diatom Soil；Wherein, the modification liquid is by being the solution containing metal cation according to volume ratio:Flocculant=1:(1~2) form, its In, the solution containing metal cation by ferric chloride solution, aluminum sulfate solution, calcium chloride solution by volume (1~3):(0 ~5):(0~2) mixes；The flocculant is (1~2) according to ratio of weight and number by aluminium polychloride, polyacrylamide: (3~7) mix；The iron chloride mass concentration is 1%~10%, aluminum sulfate mass concentration is 5%~15%, calcium chloride mass concentration is 0.01%~3%；The aluminium polychloride mass concentration is 30%~70%, and the polyacrylamide mass concentration is 0.1 ‰ ~2 ‰；When carrying out surface modification treatment to the diatomite, the solid-liquid mass ratio of the diatomite and the modification liquid is 1:(1~ 5), the modification liquid soaks the diatomite and carries out mixed processing 20min~30min, adjusts pH to neutrality with NaOH, uses High pressure steam sterilization carries out sterilization treatment, and the temperature of the sterilization treatment is 120 DEG C~125 DEG C, the diatomite drying temperature For 100 DEG C~120 DEG C；Diatomaceous average grain diameter is the mesh of 100 mesh~200 after the grinding；And/or modified diatomite with it is micro- When biological bacterium carries out mixed processing, the modification infusorial earth is soaked using microbial bacterial agent, then -55 DEG C~0 DEG C freezing is dry It is dry.
- 2. a kind of preparation method of diatomite sewage-treating agent, comprises the following steps：Step S01, carry out heating removal of impurities processing after diatomite is mixed with sulfuric acid；Step S02, the diatomite after being cleaned in step S01 is carried out using the modification liquid containing metal cation and flocculant Surface modification treatment；Step S03, the diatomite modified to surface in step S03 carry out pH regulations, sterilizing, drying and milled processed, Obtain modification infusorial earth；Step S04, mixed processing is carried out to the modification infusorial earth and microbial bacterial；Wherein, the microbial bacterial includes nitrobacteria, saccharomycete, photosynthetic bacteria, bacillus and lactic acid bacteria；Or including anti- Nitrobacteria, photosynthetic bacteria and lactic acid bacteria；When carrying out surface modification treatment to the diatomite, the solid-liquid mass ratio of the diatomite and the modification liquid is 1:(1~ 5), the modification liquid soaks the diatomite and carries out mixed processing 20min~30min, adjusts pH to neutrality with NaOH, uses High pressure steam sterilization carries out sterilization treatment, and the temperature of the sterilization treatment is 120 DEG C~125 DEG C, the diatomite drying temperature For 100 DEG C~120 DEG C；Diatomaceous average grain diameter is the mesh of 100 mesh~200 after the grinding；And/or modified diatomite with it is micro- When biological bacterium carries out mixed processing, the modification infusorial earth is soaked using microbial bacterial agent, then -55 DEG C~0 DEG C freezing is dry It is dry；The modification liquid is by being the solution containing metal cation according to volume ratio:Flocculant=1:(1~2) form, wherein, it is described Solution containing metal cation by ferric chloride solution, aluminum sulfate solution, calcium chloride solution by volume (1~3):(0~5):(0 ~2) mix；The flocculant is (1~2) according to ratio of weight and number by aluminium polychloride, polyacrylamide:(3~7) mix Conjunction forms.
- 3. the preparation method of diatomite sewage-treating agent as claimed in claim 2, it is characterised in that:The quality of the sulfuric acid is dense Spend for 2%~10%, and the solid-liquid mass ratio of the diatomite and the sulfuric acid is (1~5):1；And/or the removal of impurities processing The diatomite is carried out with the sulfuric acid including at room temperature to mix 10min~20min, then 100 DEG C~110 DEG C are dried It is dry, grinding.
- 4. the preparation method of diatomite sewage-treating agent as claimed in claim 2, it is characterised in that:The chlorination weight of iron is dense To spend for 1%~10%, aluminum sulfate mass concentration be 5%~15%, calcium chloride mass concentration is 0.01%~3%；It is and/or described Aluminium polychloride mass concentration is 30%~70%, and polyacrylamide mass concentration is 0.1 ‰~2 ‰.
- 5. a kind of sewage water treatment method, the sewage-treating agent used during sewage disposal is as the diatomite described in claim 1 Sewage-treating agent provides；And/or by the preparation method system according to any described diatomite sewage-treating agent of claim 2~4 Standby diatomite sewage-treating agent provides.
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| CN201510565677.4A CN105130011B (en) | 2015-09-07 | 2015-09-07 | Diatomite sewage-treating agent, preparation method and its technology application |
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| CN105130011B true CN105130011B (en) | 2017-12-22 |
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| CN108178207B (en) * | 2018-01-15 | 2020-05-19 | 湖南艾森尼克环保科技有限公司 | Wastewater treatment agent and preparation method thereof |
| CN111875053A (en) * | 2020-07-07 | 2020-11-03 | 同济大学 | Biochar-diatomite composite material and preparation method and application thereof |
| CN112723554B (en) * | 2020-11-05 | 2023-02-28 | 云南锦淮环保科技有限公司 | Composite biological water purifying agent and preparation method thereof |
| CN112551704A (en) * | 2020-11-24 | 2021-03-26 | 河南永泽环境科技有限公司 | Preparation method of biological compound water treatment agent |
| CN113072075B (en) * | 2021-03-30 | 2022-10-18 | 湖南三友环保科技有限公司 | Preparation method and application of sulfur-based diatomite powder material |
| CN113321318B (en) * | 2021-06-02 | 2022-11-08 | 中国科学院海洋研究所 | Method for improving efficiency of clay in treating harmful algal blooms based on microbial composite modification |
| CN113354199A (en) * | 2021-06-09 | 2021-09-07 | 北京猎鹰科技有限公司 | Wastewater treatment agent and preparation method and application thereof |
| CN113331212A (en) * | 2021-07-10 | 2021-09-03 | 江苏姚氏环保技术有限公司 | Sterilization algicide for coking sewage treatment and preparation method thereof |
| CN115650448B (en) * | 2022-02-15 | 2023-05-16 | 扬州工业职业技术学院 | Composite flocculant based on modified diatomite and application thereof |
| CN117263402B (en) * | 2023-11-21 | 2024-02-27 | 华沃德源环境技术(济南)有限公司 | Sewage treatment agent based on nitrifying bacteria and preparation method thereof |
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| CN100408161C (en) * | 2005-02-28 | 2008-08-06 | 福建省瑞泉环保科技有限公司 | Recipe and prepn process of modified diatomite for treating waste water |
| CN101935125A (en) * | 2010-08-27 | 2011-01-05 | 北京工业大学 | Method for processing alkaline-surfactant-polymer flooding oilfield injection water |
| CN102976458B (en) * | 2011-09-02 | 2016-02-24 | 上海市政工程设计研究总院（集团）有限公司 | Composite terra silicea purificata sewage dephosphorization treatment medicament |
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| CN104549135A (en) * | 2013-10-21 | 2015-04-29 | 大连市沙河口区中小微企业服务中心 | Copper-containing wastewater processing technology adopting modified diatomite |
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