CN114702142A - Ecological bacteria-rich filler special for water purification and preparation method thereof - Google Patents
Ecological bacteria-rich filler special for water purification and preparation method thereof Download PDFInfo
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- CN114702142A CN114702142A CN202210373355.XA CN202210373355A CN114702142A CN 114702142 A CN114702142 A CN 114702142A CN 202210373355 A CN202210373355 A CN 202210373355A CN 114702142 A CN114702142 A CN 114702142A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention provides a special ecological bacteria-rich filler for water purification and a preparation method thereof, wherein the special ecological bacteria-rich filler for water purification comprises percolation filler and active strains; wherein the composition of the percolation filler in the dry state is as follows by volume: 2-4 parts of primary loess/secondary loess; 1-2 parts of common black soil/meadow black soil; 1-2 parts of clay red soil/cooked red soil; 3-5 parts of humus soil; 4-8 parts of low-density filler; 2-4 parts of a curing carrier; the active strain comprises the following components in parts by weight per cubic meter of the percolation filler: 0.2-0.8kg/m3 of COD removal microbial inoculum; 0.2-0.8kg/m3 of ammonia nitrogen removal microbial inoculum; 0.2-0.8kg/m3 of total nitrogen removal microbial inoculum; the total phosphorus removal microbial inoculum is 0.2-0.8kg/m 3. The ecological bacteria-rich filler provided by the invention is not easy to block, has a good denitrification effect, is stable to operate, and is reasonable in structural matching.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an ecological bacteria-rich filler special for water quality purification and a preparation method thereof.
Background
At present, in sewage treatment technologies, particularly rural sewage treatment technologies, soil infiltration technologies are often adopted for treatment. The core of the technology is to purify sewage by using soil animals, soil microorganisms, plant roots and physical and chemical characteristics of soil inhabiting in soil below the surface of the earth. Therefore, the quality of the filled soil directly influences the sewage treatment effect. From past engineering experience, the problems of single structure, poor denitrification effect, unstable operation, easy blockage of soil pores and the like exist in the filled soil layer. The existence of the problems greatly influences the operation of the soil infiltration system and limits the popularization and application of the technology. Therefore, the filler which is not easy to block, has good denitrification effect and stable operation and is reasonable in structural collocation becomes a technical problem to be solved by technical personnel in the field.
Disclosure of Invention
The invention aims to provide an ecological bacteria-rich filler special for water quality purification and a preparation method thereof, so as to solve the problems in the background technology.
The invention is realized by the following technical scheme:
the first aspect provides a special ecological bacteria-rich filler for water purification, which comprises a percolation filler and an active strain; wherein the content of the first and second substances,
the composition of the percolation filler, in the dry state, is as follows, by volume:
2-4 parts of primary loess/secondary loess;
1-2 parts of common black soil/meadow black soil;
1-2 parts of clay red soil/cooked red soil;
3-5 parts of humus soil;
4-8 parts of low-density filler;
2-4 parts of a curing carrier;
the active strain comprises the following components in parts by weight per cubic meter of the percolation filler:
0.2-0.8kg/m3 of COD removal microbial inoculum;
0.2-0.8kg/m3 of ammonia nitrogen removal microbial inoculum;
0.2-0.8kg/m3 of total nitrogen removal microbial inoculum;
the total phosphorus removal microbial inoculum is 0.2-0.8kg/m 3.
Preferably, the density of the primary/secondary loess is 1550-3The primary/secondary loess having tubular pores thereinFilled with carbonate. The primary loess/secondary loess is rich in high content of silt particles and has a density of about 1600kg/m3Wherein, the content of the coarse silt particles with the particle size of 0.05-0.01 mm accounts for more than 50%, and the primary loess/secondary loess has well-developed tubular pores and higher porosity, generally 33-64%.
Preferably, the content of organic matters in the common black soil/meadow black soil is 30-60g/kg, the volume weight of the common black soil/meadow black soil is 0.8-1.5g/cm, the total porosity of the common black soil/meadow black soil is 45-55%, and the density of the common black soil/meadow black soil is 1650-3. The common black soil/meadow black soil has the texture from clay loam to light clay loam, the microstructure is spongy, the structure is piled, loose and has multi-branch pores, the content of organic matters is 30-60g/kg, the volume weight is 0.8-1.5g/cm, and the density is about 1700kg/m3。
Preferably, the muddy red soil/cooked red soil is a clay mineral with a brownish red color, the clay mineral is kaolinite and/or hematite containing no less than 2% of free Fe2O3, and the density of the muddy red soil/cooked red soil is 1700-1800kg/m3. The red mud/cooked red mud is brownish red, the clay minerals mainly comprise kaolinite and hematite, contain more free Fe and Al, and the red mud/cooked red mud with free Fe2O3 not less than 2% is selected, so that the P element is easy to fix, and the density is about 1750kg/m3。
Preferably, the humus soil is of a dark gray agglomerate structure rich in humic substances of humic acid, the average particle size of the humus soil in a dry state is 223 mu m, the salt base exchange capacity of the humus soil is 30-40 mg/100g, and the density of the humus soil is 1450-3. The humus soil is rich in humus, and mainly contains humic acid, is of a granular structure, has dark gray soil color, has an average particle size of 223 mu m in a dry state, has a base exchange amount of 30-40 mg/100g, and has a density of about 1500kg/m3。
Preferably, the low-density filler is one or a composition of more than two of activated carbon, sawdust, rice hulls and crushed straw.
Preferably, the solidified carrier is one or a composition of more than two of mesoporous silica, volcanic rock, ceramsite and zeolite, has an average particle size of 5-30mm, has a high specific surface area, and can be used as a carrier for attaching strains.
In a first aspect, a preparation method of the special ecological bacteria-rich filler for water purification is provided, which comprises the following specific steps:
taking 2-4 parts of dry primary loess/secondary loess, 1-2 parts of common black soil/meadow black soil, 1-2 parts of mud red soil/cooked red soil, 3-5 parts of humus, 4-8 parts of low-density filler and 2-4 parts of curing carrier according to volume ratio, stirring for 10-30 minutes by adopting a roller stirring mode at normal temperature, and fully and uniformly mixing to prepare percolation filler;
according to the weight proportion of each cubic meter of the percolation filler, 0.2-0.8kg/m3 of COD (chemical oxygen demand) removing microbial inoculum, 0.2-0.8kg/m3 of ammonia nitrogen removing microbial inoculum, 0.2-0.8kg/m3 of total nitrogen removing microbial inoculum and 0.2-0.8kg/m3 of total phosphorus removing microbial inoculum are taken to prepare active strains;
preparing a bacteria-containing aqueous solution according to the mixing proportion of dissolving each kilogram of active strains in 10 liters of water, and uniformly spraying the prepared bacteria-containing aqueous solution into the percolation filler to prepare the bacteria-containing filler to be fermented in the process of stirring and mixing the percolation filler;
and naturally stacking the prepared to-be-fermented filler containing bacteria, and fermenting for 5-7 days at the temperature of 25-30 ℃ to prepare the ecological bacteria-rich filler.
During the specific preparation, the primary loess/secondary loess, common black soil/meadow black soil, red mud/cooked red mud, humus soil, low-density filler and curing carrier are manually or mechanically screened, impurities and broken stones in the raw loess/secondary loess, common black soil/meadow black soil, low-density filler and curing carrier are removed, and the raw loess/secondary loess, the common black soil/meadow black soil, the low-density filler and the curing carrier are dried in the sun for 72 hours for later use; dissolving each kg of active strains in 10L of water to prepare a strain-containing water solution for later use; measuring 2-4 parts of primary loess/secondary loess, 1-2 parts of common black soil/meadow black soil, 1-2 parts of mud red soil/cooked red soil, 3-5 parts of humus, 4-8 parts of low-density filler and 2-4 parts of curing carrier, stirring for 10-30 minutes by adopting a roller stirring mode at normal temperature, and fully and uniformly mixing; uniformly spraying the bacteria-containing aqueous solution into each unit of filler in the mixing process; and (3) naturally stacking the mixed fillers, and fermenting for 5-7 days at the temperature of 25-30 ℃ to obtain the ecological bacteria-rich fillers.
Compared with the prior art, the invention has the beneficial effects that: the ecological bacteria-rich filler provided by the invention is not easy to block, has a good denitrification effect, is stable to operate and is reasonable in structural collocation.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a special ecological bacteria-rich filler for water purification, and the preparation method of the special ecological bacteria-rich filler for water purification comprises percolation filler and active strains; wherein the content of the first and second substances,
the composition of the percolation filler in the dry state is as follows, in volume:
2-4 parts of primary loess/secondary loess;
1-2 parts of common black soil/meadow black soil;
1-2 parts of clay red soil/cooked red soil;
3-5 parts of humus;
4-8 parts of low-density filler;
2-4 parts of a curing carrier;
the active strain comprises the following components in parts by weight per cubic meter of percolation filler:
0.2-0.8kg/m3 of COD removal microbial inoculum;
0.2-0.8kg/m3 of ammonia nitrogen removal microbial inoculum;
0.2-0.8kg/m3 of total nitrogen removal microbial inoculum;
the total phosphorus removal microbial inoculum is 0.2-0.8kg/m 3.
In the embodiment of the present invention, the density of primary/secondary loess is 1550-3The primary/secondary loess has a tubular pore filled with carbonate. The primary loess/secondary loess is rich in high content of silt particles and has a density of about 1600kg/m3Wherein the content of coarse silt particles with the particle size of 0.05-0.01 mm is more than 50%, and the primary loess/secondary loess toolHas well-developed tubular pores, and the porosity is higher, generally 33 to 64 percent.
In the embodiment of the invention, the organic matter content of the common black soil/meadow black soil is 30-60g/kg, the unit weight of the common black soil/meadow black soil is 0.8-1.5g/cm, the total porosity of the common black soil/meadow black soil is 45-55%, and the density of the common black soil/meadow black soil is 1650-3. The common black soil/meadow black soil has the texture from clay loam to light clay loam, the microstructure is spongy, the structure is piled, loose and has multi-branch pores, the content of organic matters is 30-60g/kg, the volume weight is 0.8-1.5g/cm, and the density is about 1700kg/m3。
In an embodiment of the invention, the laterite/laterite is a brownish red clay mineral, the clay mineral is kaolinite and/or hematite containing no less than 2% free Fe2O3, and the density of the laterite/laterite is 1700-1800kg/m3. The red mud/cooked red mud is brownish red, the clay minerals mainly comprise kaolinite and hematite, contain more free Fe and Al, and the red mud/cooked red mud with free Fe2O3 not less than 2% is selected, so that the P element is easy to fix, and the density is about 1750kg/m3。
In the embodiment of the invention, the humus soil is a dark gray granular structure rich in humic substances of humic acid, the average grain diameter of the humus soil in a dry state is 223 mu m, the salt base exchange capacity of the humus soil is 30-40 mg/100g, and the density of the humus soil is 1450 and 1550 kg/m-3. The humus soil is rich in humus, and mainly contains humic acid, is of a granular structure, has dark gray soil color, has an average particle size of 223 mu m in a dry state, has a base exchange amount of 30-40 mg/100g, and has a density of about 1500kg/m3。
In the embodiment of the invention, the low-density filler is one or a composition of more than two of activated carbon, sawdust, rice hulls and straw crushed materials.
In the embodiment of the invention, the curing carrier is one or a composition of more than two of mesoporous silica, volcanic rock, ceramsite and zeolite, has an average particle size of 5-30mm, has a high specific surface area, and can be used as a carrier for attaching strains.
The embodiment of the invention also provides a preparation method of the special ecological bacteria-rich filler for water purification, which comprises the following steps:
taking 2-4 parts of dry primary loess/secondary loess, 1-2 parts of common black soil/meadow black soil, 1-2 parts of mud red soil/cooked red soil, 3-5 parts of humus, 4-8 parts of low-density filler and 2-4 parts of curing carrier according to the volume ratio, stirring for 10-30 minutes by adopting a roller stirring mode at normal temperature, and fully and uniformly mixing to prepare percolation filler;
preparing active strains by taking 0.2-0.8kg/m3 of COD (chemical oxygen demand) removing microbial inoculum, 0.2-0.8kg/m3 of ammonia nitrogen removing microbial inoculum, 0.2-0.8kg/m3 of total nitrogen removing microbial inoculum and 0.2-0.8kg/m3 of total phosphorus removing microbial inoculum according to the weight mixing ratio of each cubic meter of percolation filler;
preparing a bacteria-containing aqueous solution according to the mixing proportion of dissolving each kilogram of active strains in 10 liters of water, and uniformly spraying the prepared bacteria-containing aqueous solution into the percolation filler to prepare the bacteria-containing filler to be fermented in the process of stirring and mixing the percolation filler;
and naturally stacking the prepared to-be-fermented filler containing bacteria, and fermenting for 5-7 days at the temperature of 25-30 ℃ to prepare the ecological bacteria-rich filler.
During the specific preparation, the primary loess/secondary loess, the common black soil/meadow black soil, the mud red soil/cooked red soil, the humus soil, the low-density filler and the curing carrier are manually or mechanically screened, impurities and broken stones in the mud red soil/cooked red soil are removed, and the mud red soil/cooked red soil, the humus soil, the low-density filler and the curing carrier are dried in the sun for 72 hours for later use; dissolving each kg of active strains in 10L of water to prepare a strain-containing water solution for later use; measuring 2-4 parts of primary loess/secondary loess, 1-2 parts of common black soil/meadow black soil, 1-2 parts of mud red soil/cooked red soil, 3-5 parts of humus, 4-8 parts of low-density filler and 2-4 parts of curing carrier, stirring for 10-30 minutes by adopting a roller stirring mode at normal temperature, and fully and uniformly mixing; uniformly spraying the bacteria-containing aqueous solution into each unit of filler in the mixing process; and (3) naturally stacking the mixed filler, and fermenting for 5-7 days at the temperature of 25-30 ℃ to obtain the ecological bacteria-rich filler which is used as the filler special for water purification.
In the embodiment of the invention, the density of the prepared ecological bacteria-rich filler is 900-1300kg/m3Has loose and porous structure, reasonable matching of all components, higher organic matter content, difficult blockage, difficult hardening and ecological enrichmentAfter the bacterial filler is fully contacted with water, organic matters and solid matters of the bacterial filler are slightly dissolved; the prepared ecological bacteria-rich filler has good air permeability and is more suitable for attachment and survival of microorganisms, the solidified carrier has higher specific surface area and becomes a good microorganism gathering and growing place, the microorganisms in the filler can be taken away under the continuous flushing of sewage, the microorganisms in the solidified carrier are difficult to take away and become a parent for supplementing the lost microorganisms in the filler, and therefore, the ecological bacteria-rich filler keeps water treatment microorganisms for a long time; the prepared ecological bacteria-enriched filler has high porosity, the solidified carrier can be divided into surface layer micropores, middle layer micropores and deep layer micropores, the surface layer is more easily contacted with oxygen, and the deep layer is more difficult to contact with oxygen, so that aerobic microorganisms, facultative microorganisms and anaerobic microorganisms respectively exist in the surface layer micropores, the middle layer micropores and the deep layer micropores, and nitrogen elements in sewage are removed under the alternate action of the aerobic microorganisms and the facultative microorganisms according to the sewage denitrification principle, so that the ecological bacteria-enriched filler has good denitrification effect; in the prepared ecological bacteria-rich filler, the components of the curing carrier contain higher metal oxides such as ferrous oxide, ferric oxide, aluminum oxide and the like, the components can react with phosphorus elements in sewage to fix the phosphorus elements, and in addition, the high adsorption performance of the curing carrier can also adsorb and remove part of the phosphorus elements, so the ecological bacteria-rich filler has a good phosphorus removal effect; the prepared ecological bacteria-rich filler is used for percolation treatment of rural domestic sewage, and the quality of treated effluent can reach the pollutant discharge standard of rural domestic sewage treatment water.
For a better understanding of the present invention, the following examples are provided to further illustrate the present invention, and the specific embodiments are shown in the following table one:
table one
The specific description is given here by taking example 1 listed in the above table one as an example, in example 1: taking 3 parts of dried primary loess/secondary loess (density about 1600 kg/m)3) 1.5 portions of common black soil/meadow black soil (the density is about 1700 kg/m)3) 1.5 parts of clay red soil/cooked red soil (the density is about 1750 kg/m)3) 4 portions of humus soil (the density is about 1500 kg/m)3) 6 parts of low-density filler (the density is about 300 kg/m)3) 3 parts of curing carrier are stirred for 10-30 minutes and uniformly mixed to prepare percolation filler; according to the weight proportion of each cubic meter of percolation filler, 0.5kg/m3 of COD removing microbial inoculum, 0.5kg/m3 of ammonia nitrogen removing microbial inoculum, 0.5kg/m3 of total nitrogen removing microbial inoculum and 0.5kg/m3 of total phosphorus removing microbial inoculum are taken to prepare active strains; preparing a bacterium-containing aqueous solution according to the mixing proportion of dissolving each kilogram of active strains in 10 liters of water, and uniformly spraying the prepared bacterium-containing aqueous solution into percolation filler to prepare the bacterium-containing filler to be fermented; naturally stacking the prepared filler containing bacteria to be fermented, fermenting for 5-7 days at the temperature of 25-30 ℃ to obtain the ecological bacteria-rich filler, wherein the density of the prepared ecological bacteria-rich filler is about 1111kg/m3. The details of embodiments 2-6 listed in table one above are not repeated.
The relevant items and methods for COD, ammonia nitrogen, total nitrogen and total phosphorus in the invention are shown in the following table II:
table two
The effluent quality of the invention refers to DB 44/2208-plus 2019 of rural domestic sewage treatment discharge standard of Guangdong province, and the related indexes are shown in the following table III:
table III
The monitoring data of the embodiments of the invention are shown in the following table four:
table four
As can be seen by comparing the four data in the table, all the examples can reach the first-level standard DB44/2208-2019 of discharge Standard for rural domestic wastewater treatment in Guangdong province;
comparative example 1 and example 2 show that: the more the curing carrier is added into the ecological bacteria-rich filler, the better the removal effect of the ecological bacteria-rich filler on total phosphorus is, because the curing carrier has higher adsorption effect, and Fe and Al metal oxides in the self composition of the curing carrier react with phosphorus to fix the phosphorus;
comparative example 1 and example 3 show that: the more the strains contained in the ecological bacteria-rich filler, the better the removal effect on pollutants, because the more the strains are in the unit volume, the stronger the cooperation, symbiosis, competition and parasitic relation among the strains is, thus having better removal effect;
comparative example 1, example 4 and example 5 show that: the ecological bacteria-rich filler has too high or too low density to be beneficial to removing pollutants, and the density is 1111kg/m3The removal effect is best because the air permeability is not good when the density of the ecological bacterium-rich filler is too high, which is not beneficial to the aerobic decomposition of the strains, and when the density is too low, the sewage permeates too fast, which causes insufficient decomposition of pollutants;
comparative example 1 and example 6 show that: when the content of the red mud/cooked red mud in the ecological bacteria-rich filler is high, the removal effect on total phosphorus is better, because the red mud/cooked red mud contains more Fe and Al metal oxides and can fix more phosphorus in the filler.
Through the description, the ecological bacteria-rich filler provided by the invention is not easy to block, good in denitrification effect, stable in operation and reasonable in structural collocation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The ecological bacteria-rich filler special for water purification is characterized by comprising the following components: percolating the filler and the active strain; wherein, the first and the second end of the pipe are connected with each other,
the composition of the percolation filler, in the dry state, is as follows, by volume:
2-4 parts of primary loess/secondary loess;
1-2 parts of common black soil/meadow black soil;
1-2 parts of clay red soil/cooked red soil;
3-5 parts of humus soil;
4-8 parts of low-density filler;
2-4 parts of a curing carrier;
the active strain comprises the following components in parts by weight per cubic meter of the percolation filler:
0.2-0.8kg/m3 of COD removal microbial inoculum;
0.2-0.8kg/m3 of ammonia nitrogen removal microbial inoculum;
0.2-0.8kg/m3 of total nitrogen removal microbial inoculum;
the total phosphorus removal microbial inoculum is 0.2-0.8kg/m 3.
2. The ecological bacteria-rich filler special for water quality purification according to claim 1, wherein the density of the primary loess/secondary loess is 1550-3The primary/secondary loess has a tubular pore filled with carbonate.
3. The special ecological bacteria-rich filler for water quality purification according to claim 2, wherein the organic matter content of the common black soil/meadow black soil is 30-60g/kg, the volume weight of the common black soil/meadow black soil is 0.8-1.5g/cm, and the total pores of the common black soil/meadow black soilThe porosity is 45-55%, and the density of the common black soil/meadow black soil is 1650-3。
4. The ecological bacteria-rich filler special for water quality purification according to claim 3, wherein the clay red soil/cooked red soil is a brownish red clay mineral, the clay mineral is kaolinite and/or hematite containing no less than 2% of free Fe2O3, and the density of the clay red soil/cooked red soil is 1700-1800 kg/m-3。
5. The special ecological bacteria-rich filler for water quality purification according to claim 4, wherein the humus soil is of a dark gray conglomerate particle structure rich in humic substances of humic acid, the average particle size of the humus soil in a dry state is 223 μm, the salt exchange capacity of the humus soil is 30-40 mg/100g, and the density of the humus soil is 1450-3。
6. The ecological bacteria-rich filler special for water quality purification according to claim 5, wherein the low-density filler is one or a composition of more than two of activated carbon, sawdust, rice hulls and crushed straw.
7. The ecological bacteria-rich filler special for water quality purification according to claim 6, wherein the curing carrier is one or a combination of more than two of mesoporous silica, volcanic rock, ceramsite and zeolite, and the average particle size of the curing carrier is 5-30 mm.
8. A preparation method of special ecological bacteria-rich filler for water purification is characterized by comprising the following steps:
taking 2-4 parts of dry primary loess/secondary loess, 1-2 parts of common black soil/meadow black soil, 1-2 parts of mud red soil/cooked red soil, 3-5 parts of humus, 4-8 parts of low-density filler and 2-4 parts of curing carrier according to volume ratio, stirring for 10-30 minutes by adopting a roller stirring mode at normal temperature, and fully and uniformly mixing to prepare percolation filler;
according to the weight proportion of each cubic meter of the percolation filler, 0.2-0.8kg/m3 of COD (chemical oxygen demand) removing microbial inoculum, 0.2-0.8kg/m3 of ammonia nitrogen removing microbial inoculum, 0.2-0.8kg/m3 of total nitrogen removing microbial inoculum and 0.2-0.8kg/m3 of total phosphorus removing microbial inoculum are taken to prepare active strains;
preparing a bacteria-containing aqueous solution according to the mixing proportion of dissolving each kilogram of active strains in 10 liters of water, and uniformly spraying the prepared bacteria-containing aqueous solution into the percolation filler to prepare the bacteria-containing filler to be fermented in the process of stirring and mixing the percolation filler;
and naturally stacking the prepared to-be-fermented filler containing bacteria, and fermenting for 5-7 days at the temperature of 25-30 ℃ to prepare the ecological bacteria-rich filler.
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| CN102557330A (en) * | 2010-12-20 | 2012-07-11 | 中国科学院城市环境研究所 | An/O type composite artificial wetland system for enhanced treatment of low-C/N ratio wastewater |
| CN105776531A (en) * | 2016-04-28 | 2016-07-20 | 沈阳大学 | Ecological matrix of multimedium sewage subsurface infiltration system and preparation method of ecological matrix |
| WO2019103649A1 (en) * | 2017-11-27 | 2019-05-31 | Валерий Абрамович ШАПИРО | Enriched ecological black earth, enriched concentrated soil solution, method and device for producing same |
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