CN102092918A - Biological drying method for treating urban domestic dewatered sludge - Google Patents
Biological drying method for treating urban domestic dewatered sludge Download PDFInfo
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Abstract
The invention relates to a biological drying method for treating urban domestic dewatered sludge, which belongs to the technical field of environmental protection. The method comprises the following steps of: mixing the dewatered sludge with crushed auxiliary materials and feeding the mixture into a fermentation cabin; adding fresh composted sludge from the top of the cabin, enclosing the fermentation cabin for a fermentation reaction, mixing a zymophyte agent special for sludge with the fresh composted sludge and scattering the mixture into the fermentation cabin; uniformly stirring, uniformly ventilating and aerating from the bottom of the cabin, and exhausting air from the top of the fermentation cabin until the central temperature of a compost is between 55 and 65 DEG C; and ventilating from the bottom of the fermentation cabin and inducing air from the top of the fermentation cabin to keep the central temperature of the compost in the fermentation cabin for 3 to 6 days, stirring the compost, maintaining for 2 to 4 days until the water content of the compost is reduced, continually ventilating from the bottom of the fermentation cabin and inducing air from the top of the fermentation cabin, stirring until the water content of the compost is less than 40 percent, and discharging. The dewatered sludge prepared by the method is a harmless and scentless product with a stable property, and can be used as fertilizers, covering soil and the like in agriculture and forestry and landfill yards.
Description
Technical field
The present invention relates to a kind of urban life biological drying method for treating dewatered sludge, belong to environmental protection technical field.
Background technology
Along with Chinese Urbanization is made progress rapidly, and country is to the raising year by year of the attention dynamics of ambient water Pollution abatement, and China had built large quantities of new sewage works in recent years, satisfied the needs that urbanization is built.But consequent dewatered sludge problem has also caused the government and the public's attention gradually.Because to the paying little attention to of mud problem, mud has caused serious secondary pollution to environment based on the disposal options of landfill substantially before China, the mud problem has become the mashed tail engineering that China's water utilities industry is more and more had a headache at present.Since the mud enrichment most pollutents in the sewage, water ratio height, viscosity greatly, easily produce stench in addition, mud has become the landfill object that each landfill yard refusal is accepted now, disorderly phenomenon is also very serious for consequent mud, so the schedule of water utilities planning has been put in the comprehensive processing of mud.
Comprehensively 12 developed countries are to the sludge disposal mode in the world, and wherein the utilization of mud soil has accounted for most ratios, reaches 45.3%, and the burning mode is 10.5%, and other are landfill and the extra large mode of row.From as can be seen, generally tend to the mode that sludge organism is handled abroad at present here.
Because the complicacy of mud, various sludge treatment modes all have own unique characteristics.And the characteristics such as having irreplaceable non-secondary pollution (atmosphere, soil and water surrounding), minimizing and innoxious ability are outstanding, energy-conserving and environment-protective of carrying out a biological disposal upon are handled the ranks of researching and developing so increasing scientific research institution and enterprise have added sludge organism.But biological treatment generally has problems such as soil occupation rate height, treatment time length, inconvenient operation, and China have have a large population in a small area, the per capita rate of resource is few, sludge yield is high, dispose the national conditions of inconvenience.So, how to solve these restriction difficult points of biological treatment, how to allow the sludge organism processing have technology now with sewage work effectively and combine, these all are that sludge organism is handled the key of promoting the use of in China.
At present China's sludge organism processing aspect main technique is two kinds of anaerobically fermenting and aerobic fermentations, and the anaerobism aspect requires high to facility, strict to fermentation condition; Though aerobic fermentation is more easy to operate, also exist temperature-rise period slow, fermentation time is long, Energy Efficiency Ratio is not high, and secondary pollution problems such as (foul smell, percolates etc.).
Summary of the invention
The objective of the invention is to propose a kind of urban life biological drying method for treating dewatered sludge, existing method for sludge treatment is improved, anaerobically fermenting and two kinds of technologies of aerobic fermentation of mud are combined, after allowing the sludge anaerobic fermentation only proceed to hydrolysis stage, enter into the aerobic fermentation process rapidly.Make full use of the advantage of anaerobism and aerobic fermentation flora, all kinds of organic matters in the mud are fully degraded, and guarantee the agility of aerobic temperature rise period.
The urban life biological drying method for treating dewatered sludge that the present invention proposes may further comprise the steps:
(1) water ratio is carried out uniform mixing less than 3 centimetres broken auxiliary material by 1: 1～2 volume ratio less than 80% dewatered sludge and particle diameter, obtain first compound, the water ratio that makes second compound is 55%-65%, first compound is conveyed in the fermentation cabin, pile highly is 1.5～2 meters, the heap body that length and width equate with fermentation cabin, heap body top from the fermentation cabin apex distance from being 10～20 centimetres, and add water ratio less than 20% the fresh mud that becomes thoroughly decomposed from the Cang Ding of fermentation cabin, the mass ratio of the mud and first compound of becoming thoroughly decomposed is 1: 1000, after stirring heap body stirring, reacted 3～8 hours in the sealed fermenting storehouse;
(2) mud fermenting microbial inoculum is mixed with the fresh mud that becomes thoroughly decomposed, obtain second compound, wherein the mass ratio of mud fermenting microbial inoculum and the fresh mud that becomes thoroughly decomposed is 1: 10, second compound is sprinkled in the fermentation cabin, the mass ratio of second compound and first compound is 1: 1000, stir the heap body, after stirring, the sealing and fermenting storehouse is from the even ventilation aeration in fermentation cabin bottom, simultaneously from fermentation cabin top exhausting, to the oxygen supply of ventilating of heap body, wherein bottom airy blast is 1.5～3 kPas, and per 0.5～1 hour of ventilation frequency ventilated 5～10 minutes, the air inducing blast is 0.5～1 kPa, per 0.5～1 hour of air inducing frequency, air inducing 5～10 minutes, when the humidity at heap body and the surplus place of fermentation cabin head space greater than 85% the time, open fermentation cabin top air inducing, the heap body was stirred 10～30 minutes every 12 hours, and the stirrer rotating speed is 5～30 rev/mins, reaches 55-65 ℃ to piling body core temperature;
(3) after the heap body core temperature rises to 55-65 ℃, from the ventilation of fermentation cabin bottom with from fermentation cabin top air inducing,, kept 3～6 days so that the heap body core temperature maintains 55～65 ℃ in the fermentation cabin, simultaneously the heap body was stirred 10～30 minutes every 12 hours, the stirrer rotating speed is 5～30 rev/mins;
(4) from the ventilation of fermentation cabin bottom with from fermentation cabin top air inducing, the ventilation blast is 1.5～3 kPas, ventilation frequency ventilated 5～10 minutes in per 0.5～1 hour, the air inducing blast is 0.5～1 kPa, the air inducing frequency was ventilated 5～10 minutes in per 0.5～1 hour, simultaneously the heap body was stirred 10～30 minutes every 12 hours, and the stirrer rotating speed is 5～30 rev/mins, kept 2～4 days, and reduced to below 45% to piling body moisture;
(5) ventilate and top air inducing from the fermentation cabin bottom, the ventilation blast is 1.5～3 kPas, ventilation frequency ventilated 30 minutes in per 12 hours, the air inducing blast is 0.5～1 kPa, and the air inducing frequency was ventilated 30 minutes in per 12 hours, simultaneously the heap body is stirred 10～30 minutes every 12 hours, the stirrer rotating speed is 5～30 rev/mins, 10～20 days time length stopped after 40% to piling body moisture, and discharging.
The urban life biological drying method for treating dewatered sludge that the present invention proposes, its advantage is: use the inventive method to handle water ratio less than 80% dewatered sludge, can become that character is comparatively stable, the product of harmless odorless in 10 days, can become rotten degree product for agriculture preferably in 20 days.In the inventive method, adopt airtight storehouse system, turning stirring and ventilation aeration have all been finished in a storehouse, effectively prevented leaking outside of the smelly liquid of foul smell.And anaerobically fermenting and aerobic fermentation combined, the control anaerobically fermenting finishes at hydrolysis stage, enters the aerobic fermentation stage immediately.In order to strengthen ferment effect, each stage all adds a certain amount of fermenting agent and the mud that becomes thoroughly decomposed.The aerobic fermentation stage has adopted time-temperature controlling system that heap body aeration is controlled, and combines the turning stir mode, allows to greatest extent and piles full and uniform the fermenting of body.So Energy Efficiency Ratio height of the present invention, and fermentation period is short, and heap body moisture content can be reduced to below 45% about 10 days.The mud maturation stage can continue after the different time sections discharging to handle according to mud use difference.But the inventive method both can be used for the processing of treatment of town sewage and sludge, sewage sludge, organic industrial sewage biochemical sludge, also can be used for the processing of organic solid castoffs such as agricultural organic solid castoff, food-processing industry, the processing product can be used for agroforestry and landfill yard is made fertilizer, covered and use soil etc.
Embodiment
The urban life biological drying method for treating dewatered sludge that the present invention proposes may further comprise the steps:
(1) water ratio is carried out uniform mixing less than 3 centimetres broken auxiliary material by 1: 1～2 volume ratio less than 80% dewatered sludge and particle diameter, obtain first compound, the water ratio that makes second compound is 55%-65%, first compound is conveyed in the fermentation cabin, pile highly is 1.5～2 meters, the heap body that length and width equate with fermentation cabin, heap body top from the fermentation cabin apex distance from being 10～20 centimetres, and add water ratio less than 20% the fresh mud that becomes thoroughly decomposed from the Cang Ding of fermentation cabin, the mass ratio of the mud and first compound of becoming thoroughly decomposed is 1: 1000, after stirring heap body stirring, reacted 3～8 hours in the sealed fermenting storehouse;
(2) mud fermenting microbial inoculum is mixed with the fresh mud that becomes thoroughly decomposed, obtain second compound, wherein the mass ratio of mud fermenting microbial inoculum and the fresh mud that becomes thoroughly decomposed is 1: 10, second compound is sprinkled in the fermentation cabin, the mass ratio of second compound and first compound is 1: 1000, stir the heap body, after stirring, the sealing and fermenting storehouse is from the even ventilation aeration in fermentation cabin bottom, simultaneously from fermentation cabin top air inducing, to the oxygen supply of ventilating of heap body, wherein bottom airy blast is 1.5～3 kPas, and per 0.5～1 hour of ventilation frequency ventilated 5～10 minutes, the air inducing blast is 0.5～1 kPa, per 0.5～1 hour of air inducing frequency, air inducing 5～10 minutes, when the humidity at heap body and the surplus place of fermentation cabin head space greater than 85% the time, open fermentation cabin top air inducing, the heap body was stirred 10～30 minutes every 12 hours, and the stirrer rotating speed is 5～30 rev/mins, reaches 55-65 ℃ to piling body core temperature;
(3) after the heap body core temperature rises to 55-65 ℃, from the ventilation of fermentation cabin bottom with from fermentation cabin top air inducing,, kept 3～6 days so that the heap body core temperature maintains 55～65 ℃ in the fermentation cabin, simultaneously the heap body was stirred 10～30 minutes every 12 hours, the stirrer rotating speed is 5～30 rev/mins;
(4) from the ventilation of fermentation cabin bottom with from fermentation cabin top air inducing, the ventilation blast is 1.5～3 kPas, ventilation frequency ventilated 5～10 minutes in per 0.5～1 hour, the air inducing blast is 0.5～1 kPa, per 0.5～1 hour air inducing of air inducing frequency 5～10 minutes stirred 10～30 minutes every 12 hours the heap body simultaneously, and the stirrer rotating speed is 5～30 rev/mins, kept 2～4 days, and reduced to below 45% to piling body moisture;
(5) ventilate and top air inducing from the fermentation cabin bottom, the ventilation blast is 1.5～3 kPas, ventilation frequency ventilated 30 minutes in per 12 hours, the air inducing blast is 0.5～1 kPa, and per 12 hours air inducing of air inducing frequency 30 minutes stirred 10～30 minutes every 12 hours the heap body simultaneously, the stirrer rotating speed is 5～30 rev/mins, 10～20 days time length stopped after 40% to piling body moisture, and discharging.
In the inventive method, described broken auxiliary material can be agricultural wastes straw or thermoelectricity waste flyash.
In the inventive method, the mixture that described mud fermenting microbial inoculum can be made up of degradation of polypropylene acid amides microbial inoculum and compost fermentation microbial inoculum, the mixing quality per-cent of degradation of polypropylene acid amides microbial inoculum and compost fermentation microbial inoculum is 1: 1, degradation of polypropylene acid amides microbial inoculum wherein is aerobic micrococci, and the compost fermentation microbial inoculum is high temperature genus bacillus, high temperature fungi and the thermophilic actinomycete group mixture with any mixed.Used degradation of polypropylene acid amides microbial inoculum and compost fermentation microbial inoculum in the embodiment of the invention provides by China Agricultural University
In the inventive method, combine mode with the top exhausting to the oxygen supply of ventilating of heap body by the bottom aeration that evenly ventilates.The form of the employing time control blower fan aeration that ventilates.The control mode that vacuum fan then adopts time and atmospheric moisture to combine will be piled the steam-laden waste gas extraction fermentation cabin that body ventilation aeration produces.For prevent to pile the body compacting and aeration inhomogeneous, need that airtight turning is more than twice in the storehouse every day, the waste gas that produces during turning is still extracted out by the top.When heap temperature reaches more than 55-65 ℃, adopt the mode of heap body core temperature control blower ventilation aeration that the heap body is incubated, soaking time should meet the compost hygienic standard of national requirements.The control mode that vacuum fan then adopts temperature and humidity to combine will be piled the steam-laden waste gas extraction fermentation cabin that body ventilation aeration produces.Need that airtight turning is more than twice in the storehouse every day, the waste gas that produces during turning is still extracted out by the top.After holding stage finishes, the form of employing time control blower fan ventilate aeration and exhausting dehumidifying.Need that airtight turning is more than twice in the storehouse every day, the waste gas that produces during turning is still extracted out by the top.Reduce to 45% when following to piling the body water ratio, the sludge high temperature aerobic fermentation stage finishes.To control the ventilate frequency of aeration and exhausting dehumidifying of blower fan the time and reduce, reach more than 10 days greater than 30%, and allow the heap body fully become thoroughly decomposed to guarantee heap body water ratio.In order to make the whole fermentation of heap body evenly, still need more than the turning once every day.Reduce in 20% to overall stack body water ratio, heap body particle is the loose shape of brown, and when no stink had the soil ulmin special odor, the mud maturation stage finished.
The inventive method is finished with aerobic fermentation the sludge anaerobic fermentation in a fermentation cabin.Fermentation cabin is airtight, adopts the mode combustion gas of exhausting dehumidifying, and this mode can effectively prevent the foul smell spillover of fermenting process.In the sludge fermentation process, can behind the high-temperature aerobic fermentation end of processing, select different time period dischargings according to sludge product use difference in maturation stage.
Below introduce the embodiment of the inventive method:
Embodiment one
(1) being 75% dewatered sludge and particle diameter with 3 tons of water ratio carries out uniform mixing less than 3 centimetres broken stalk by 1: 1 volume ratio, obtain first compound, the water ratio that makes second compound is 60%, first compound is conveyed in the fermentation cabin, pile highly is 1.5 meters, the heap body that length and width equate with fermentation cabin, heap body top from the fermentation cabin apex distance from being 20 centimetres, and add 3 kilograms of water ratio less than 20% the fresh mud that becomes thoroughly decomposed from the Cang Ding of fermentation cabin, the mass ratio of the mud and first compound of becoming thoroughly decomposed is 1: 1000, after stirring heap body stirring, reacted 5 hours in the sealed fermenting storehouse;
(2) mud fermenting microbial inoculum is mixed with the fresh mud that becomes thoroughly decomposed, obtain second compound, wherein the mass ratio of mud fermenting microbial inoculum and the fresh mud that becomes thoroughly decomposed is 1: 10,3 kilogram of second compound is sprinkled in the fermentation cabin, the mass ratio of second compound and first compound is 1: 1000, stir the heap body, after stirring, the sealing and fermenting storehouse is from the even ventilation aeration in fermentation cabin bottom, simultaneously from fermentation cabin top air inducing, to the oxygen supply of ventilating of heap body, wherein bottom airy blast is 2 kPas, and per 0.5 hour of ventilation frequency ventilated 5 minutes, the air inducing blast is 0.5 kPa, per 0.5 hour of air inducing frequency, air inducing 5 minutes, when the humidity at heap body and the surplus place of fermentation cabin head space greater than 85% the time, open fermentation cabin top air inducing, the heap body was stirred 30 minutes every 12 hours, and the stirrer rotating speed is 20 rev/mins, reaches 60 ℃ to piling body core temperature;
(3) after the heap body core temperature rises to 60 ℃, from the ventilation of fermentation cabin bottom with from fermentation cabin top air inducing,, kept 5 days so that the heap body core temperature maintains 60 ℃ in the fermentation cabin, simultaneously the heap body was stirred 30 minutes every 12 hours, the stirrer rotating speed is 20 rev/mins;
(4) from the ventilation of fermentation cabin bottom with from fermentation cabin top air inducing, the ventilation blast is 2 kPas, ventilation frequency ventilated 10 minutes in per 0.5 hour, the air inducing blast is 0.5 kPa, per 0.5 hour air inducing of air inducing frequency 10 minutes stirred 30 minutes every 12 hours the heap body simultaneously, and the stirrer rotating speed is 20 rev/mins, kept 3 days, and reduced to below 45% to piling body moisture;
(5) ventilate and top air inducing from the fermentation cabin bottom, the ventilation blast is 2 kPas, ventilation frequency ventilated 30 minutes in per 12 hours, the air inducing blast is 0.5 kPa, and per 12 hours air inducing of air inducing frequency 30 minutes stirred 30 minutes every 12 hours the heap body simultaneously, the stirrer rotating speed is 10 rev/mins, 10 days time length stopped after 40% to piling body moisture, and discharging.
Embodiment two
(1) dewatered sludge of 2 tons of water ratio positions 80% and particle diameter are carried out uniform mixing less than 3 centimetres thermoelectricity waste flyash by 1: 2 volume ratio, obtain first compound, the water ratio that makes second compound is 65%, first compound is conveyed in the fermentation cabin, pile highly is 1.5 meters, the heap body that length and width equate with fermentation cabin, heap body top from the fermentation cabin apex distance from being 20 centimetres, and add 2 kilograms of water ratio less than 20% the fresh mud that becomes thoroughly decomposed from the Cang Ding of fermentation cabin, the mass ratio of the mud and first compound of becoming thoroughly decomposed is 1: 1000, after stirring heap body stirring, reacted 8 hours in the sealed fermenting storehouse;
(2) mud fermenting microbial inoculum is mixed with the fresh mud that becomes thoroughly decomposed, obtain second compound, wherein the mass ratio of mud fermenting microbial inoculum and the fresh mud that becomes thoroughly decomposed is 1: 10,0.2 kilogram of second compound is sprinkled in the fermentation cabin, the mass ratio of second compound and first compound is 1: 1000, stir the heap body, after stirring, the sealing and fermenting storehouse is from the even ventilation aeration in fermentation cabin bottom, simultaneously from fermentation cabin top exhausting, to the oxygen supply of ventilating of heap body, wherein bottom airy blast is 2 kPas, and per 0.5 hour of ventilation frequency ventilated 10 minutes, the air inducing blast is 0.5 kPa, per 0.5 hour of air inducing frequency, air inducing 10 minutes, when the humidity at heap body and the surplus place of fermentation cabin head space greater than 85% the time, open fermentation cabin top air inducing, the heap body was stirred 30 minutes every 12 hours, and the stirrer rotating speed is 15 rev/mins, reaches 55 ℃ to piling body core temperature;
(3) after the heap body core temperature rises to 55 ℃, from the ventilation of fermentation cabin bottom with from fermentation cabin top air inducing,, kept 5 days so that the heap body core temperature maintains 55 ℃ in the fermentation cabin, simultaneously the heap body was stirred 30 minutes every 12 hours, the stirrer rotating speed is 15 rev/mins;
(4) from the ventilation of fermentation cabin bottom with from fermentation cabin top air inducing, the ventilation blast is 2 kPas, ventilation frequency ventilated 10 minutes in per 0.5 hour, the air inducing blast is 0.5 kPa, per 0.5 hour air inducing of air inducing frequency 10 minutes stirred 30 minutes every 12 hours the heap body simultaneously, and the stirrer rotating speed is 30 rev/mins, kept 3 days, and reduced to below 45% to piling body moisture;
(5) ventilate and top air inducing from the fermentation cabin bottom, the ventilation blast is 2 kPas, ventilation frequency ventilated 30 minutes in per 12 hours, the air inducing blast is 0.5 kPa, and the air inducing frequency was ventilated 30 minutes in per 12 hours, simultaneously the heap body is stirred 30 minutes every 12 hours, the stirrer rotating speed is 15 rev/mins, 15 days time length stopped after 40% to piling body moisture, and discharging.
Claims (3)
1. urban life biological drying method for treating dewatered sludge is characterized in that this method may further comprise the steps:
(1) water ratio is carried out uniform mixing less than 3 centimetres broken auxiliary material by 1: 1～2 volume ratio less than 80% dewatered sludge and particle diameter, obtain first compound, the water ratio that makes second compound is 55%-65%, first compound is conveyed in the fermentation cabin, pile highly is 1.5～2 meters, the heap body that length and width equate with fermentation cabin, heap body top from the fermentation cabin apex distance from being 10～20 centimetres, and add water ratio less than 20% the fresh mud that becomes thoroughly decomposed from the Cang Ding of fermentation cabin, the mass ratio of the mud and first compound of becoming thoroughly decomposed is 1: 1000, after stirring heap body stirring, reacted 3～8 hours in the sealed fermenting storehouse;
(2) mud fermenting microbial inoculum is mixed with the fresh mud that becomes thoroughly decomposed, obtain second compound, wherein the mass ratio of mud fermenting microbial inoculum and the fresh mud that becomes thoroughly decomposed is 1: 10, second compound is sprinkled in the fermentation cabin, the mass ratio of second compound and first compound is 1: 1000, stir the heap body, after stirring, the sealing and fermenting storehouse is from the even ventilation aeration in fermentation cabin bottom, simultaneously from fermentation cabin top exhausting, to the oxygen supply of ventilating of heap body, wherein bottom airy blast is 1.5～3 kPas, and per 0.5～1 hour of ventilation frequency ventilated 5～10 minutes, the air inducing blast is 0.5～1 kPa, per 0.5～1 hour of air inducing frequency, air inducing 5～10 minutes, when the humidity at heap body and the surplus place of fermentation cabin head space greater than 85% the time, open fermentation cabin top air inducing, the heap body was stirred 10～30 minutes every 12 hours, and the stirrer rotating speed is 5～30 rev/mins, reaches 55-65 ℃ to piling body core temperature;
(3) after the heap body core temperature rises to 55-65 ℃, from the ventilation of fermentation cabin bottom with from fermentation cabin top air inducing,, kept 3～6 days so that the heap body core temperature maintains 55～65 ℃ in the fermentation cabin, simultaneously the heap body was stirred 10～30 minutes every 12 hours, the stirrer rotating speed is 5～30 rev/mins;
(4) from the ventilation of fermentation cabin bottom with from fermentation cabin top air inducing, the ventilation blast is 1.5～3 kPas, ventilation frequency ventilated 5～10 minutes in per 0.5～1 hour, the air inducing blast is 0.5～1 kPa, the air inducing frequency was ventilated 5～10 minutes in per 0.5～1 hour, simultaneously the heap body was stirred 10～30 minutes every 12 hours, and the stirrer rotating speed is 5～30 rev/mins, kept 2～4 days, and reduced to below 45% to piling body moisture;
(5) ventilate and top air inducing from the fermentation cabin bottom, the ventilation blast is 1.5～3 kPas, and ventilation frequency ventilated 30 minutes in per 12 hours, and the air inducing blast is 0.5～1 kPa, the air inducing frequency was ventilated 30 minutes in per 12 hours, simultaneously the heap body was stirred 10～30 minutes every 12 hours, the stirrer rotating speed is 5～30 rev/mins, and ventilation frequency is adjusted to per 12 hours and ventilated 30 minutes, simultaneously the heap body was stirred 30～60 minutes every day, 10～20 days time length stopped after 40% to piling body moisture, and discharging.
2. the method for claim 1 is characterized in that wherein said broken auxiliary material is agricultural wastes straw or thermoelectricity waste flyash.
3. the method for claim 1, it is characterized in that wherein said mud fermenting microbial inoculum is the mixture by degradation of polypropylene acid amides microbial inoculum and compost fermentation microbial inoculum, the mixing quality per-cent of degradation of polypropylene acid amides microbial inoculum and compost fermentation microbial inoculum is 1: 1, degradation of polypropylene acid amides microbial inoculum wherein is aerobic micrococci, and the compost fermentation microbial inoculum is high temperature genus bacillus, high temperature fungi and the thermophilic actinomycete group mixture with any mixed.
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