CN108178484A - A kind of method that sludge combined stalk powder carries out the pre- desiccation of biology - Google Patents
A kind of method that sludge combined stalk powder carries out the pre- desiccation of biology Download PDFInfo
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- CN108178484A CN108178484A CN201810025921.1A CN201810025921A CN108178484A CN 108178484 A CN108178484 A CN 108178484A CN 201810025921 A CN201810025921 A CN 201810025921A CN 108178484 A CN108178484 A CN 108178484A
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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Abstract
The invention discloses a kind of methods that municipal sludge combined stalk powder carries out the pre- desiccation of biology, it is a kind of to realize pre- dewatered sludge using multiple micropopulations and stalk powder mixture collective effect, it is high to solve existing moisture percentage in sewage sludge, desiccation energy consumption is big, the technical problems such as big transport inconvenience of viscosity.It is by the sludge that moisture content after thickening is 75%~85%, adds in the straw powder for growing beneficial microbe strain, a kind of technique of pre- dewatered sludge is carried out by the organic matter heat production in microbial consumption sludge.The present invention ferments heat production to evaporate moisture by microorganism aerobic, sludge is made to be detached from the plastic stage naturally, and using the deodorization functions of microorganism, the foul smell gone in sludge is eliminated, utilizes sludge and the biological energy source of straw powder itself, it is reduced so as to fulfill the volume reduction of sludge and stalk, and it is simple to provide a kind of technological process, and it is easy to operate, it is at low cost, desiccation effect is good, the good pre- drying process of biology of environmental benefit.
Description
Technical field
The present invention relates to a kind of processing of municipal sludge, more particularly, refer to that a kind of sludge combined stalk powder is given birth to
The method of the pre- desiccation of object.
Background technology
City dehydrated sludge has the characteristics that：It is not easy to be dehydrated, moisture content is more than 80% after concentrated dehydration；Moisture content
High volume is big, is unfavorable for transporting；Volatile matter content is high, and contains abundant nutritional ingredient；Property is unstable and may contain big
The harmful substances such as pathogen, heavy metal and the toxic organic compound of amount.
At present, the method for disposal of sludge mainly has landfill, land use and burning.It directly fills, land occupation and can produce
Raw percolate and polluted underground water；Direct land use then can be inconvenient because of transport, and the big difficulties in dispersion of viscosity is restricted；Directly
Burning is connect, because its solid content is low, calorific value is also relatively low, causes burning cost higher.Therefore, municipal sludge is carried out at desiccation
Reason reduces moisture content, is the inevitable step of sludge reduction disposition.
Sludge drying technique is to carry out moisture removal to sludge by thermal energy, and a large amount of heat will be exhausted in drying process
Energy.The heated desiccation of dewatered sludge makes moisture content drop to 60% this section by 80% to consume that energy is small, and what is mainly removed is dirty
Free water in mud；It is also small that similary moisture content continues desiccation consumption energy below 40%；But sludge moisture content 40%~60% it
Between, be sludge plastic stage, the fluid behaviour of this stage sludge is gluey, sticky similar to glue, it is difficult to dispose, to its desiccation
Consumption energy sharply increases, huge energy consumption, and is difficult desiccation.
Biological dewatered is a kind of novel reduction process developed based on compost method, and principle is utilizes sludge sheet
The heat that organic matter aerobic biodegradation contained by body generates, natural and mechanical combined ventilation and turning make moisture enter gas as a vapor
As vaporizing the moisture in sludge and spreading, realize the decline of moisture content.
China is large agricultural country, and agricultural straw resource enriches, northern wheat, maize straw, and southern straw etc. is all
Yield is huge.Since people comprehensively utilize stalk resource, understanding is insufficient, and the utilization rate for leading to stalk is very low.Meanwhile stalk
The phenomenon that arbitrarily abandoning or burn is remained incessant after repeated prohibition, and is not only the significant wastage to agricultural straw resource, and is also resulted in serious
Environmental pollution.
Invention content
The present invention is to reduce existing dewatered sludge moisture content, solves existing sludge heat drying dehydration hardly possible, power consumption cost
High the technical deficiencies such as takes up a large area, and can make full use of biological straw and microorganism, effectively improves the hardened colloid of sludge
Structure can increase gap, be easy to moisture evaporation, remove the foul smell that sludge distributes, sludge is made to be detached from the plastic stage naturally, so as to real
The volume reduction decrement of existing sludge, and it is simple to provide a kind of technological process, easy to operate, at low cost, the good pre- desiccation of biology of desiccation effect
Technique.
The present invention proposes a kind of sludge combined stalk powder and carries out biological dewatered method, it is characterised in that has following step
Suddenly：
Step 1, sludge pretreatment；
By the sludge of collection after machinery drying or press dewatering processing, the pending dirt that water content is 75%~85% is obtained
Mud；
Step 2, stalk break process；
The straw of collection is directly crushed, the crushing straw of a diameter of below 30mm is obtained after broken；Step 3 adds
Add composite bacteria agent；
Composite bacteria agent is sprayed in the crushing straw obtained in step 2, it is agitated to be uniformly mixed, obtain the straw containing micropopulation
Stalk powder；
The weight percent that composite bacteria agent accounts for crushing straw is 1%~5%；
Step 4, initial fermentation；
The straw powder containing micropopulation that step 3 obtains is fermented 2~3 days, obtains initial fermentation straw powder；
The mixing of step 5, sludge and straw powder；
By the pending mud that step 1 obtains with the initial fermentation straw powder that step 4 obtains is agitated is uniformly mixed, obtain dirt
Mud mixture A；
The mixed weight of initial fermentation straw powder and pending mud proportioning is 1:10~20；
Step 6, biological dewatered processing；
By the mud mixture A that step 5 obtains every 10~12 hours at 40 DEG C~50 DEG C of temperature, turning, stir process increase
Add oxygen content therein, also help moisture loss, biological pre- drying and other treatment obtains mud mixture B after 10~15 days.The dirt
The moisture content of mud mixture B drops to 40%~45%.
The present invention has the following advantages compared with other biological drying process：Microorganism of the present invention is first preliminary in straw powder
Growth and breeding establishes an entirety of strain, mutually cooperates with, a kind of biological bluk recombination system coexisted as multiple-microorganism
Agent, while be proliferated and act synergistically by mutual symbiosis, aerobic fermentation is formed and is stablized and the complicated ecosystem；Later again
It is added in sludge, brings the nutriment of profitable strain and flora primary growth into sludge, without because of the initial stage of microorganism
Mixing represents other antagonism Competitions etc. in sludge again；Beneficial microbe colony generates lipase, egg in metabolic process
Organic matter in the sludge that can degrade such as white enzyme, amylase breaks sludge micelle state, irreducible water activation, conducive to water is combined
It abolishes, by the aerobic fermentation heat production evaporation moisture in sludge, breaks the plastic stage of sludge.It is generated in microbial metabolism
Various enzymes degrade smelly source organic matter, it may also reduce stink distributes.The present invention does not need to other additional chemical adjuvant matrix etc.,
Addition straw powder is conducive to increase the content of organic matter of sludge, ensures that composite bacteria agent nutritional need makes growth breeding rapid, more
Its effect of good performance is also beneficial to reduce sludge viscosity, increases pore structure, reduce the associativity of sludge free water.And subtract
The tamed strain stage is lacked, composite flora is made preferably to play a role, accelerated the desiccation rate of sludge, be truly realized sludge straw
The volume reduction minimizing of stalk is that a kind of technological process is simple, easy to operate, at low cost, the good pre- drying process of biology of desiccation effect.
Specific embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
In the present invention, sludge can mix with stalk and carry out pre- desiccation by microorganism, not only economic but also environmental-friendly sludge
Stalk processing disposition, makes dewatered sludge moisture content be down to 40% by 80%, sludge is made to be detached from the plastic stage naturally, it is big not need to consumption
External source is measured, energy consumption is greatly saved in this way, reduces sludge drying cost, and remove by effect of the microorganism in sludge
Wherein foul smell is removed, therefore environmentally friendly.It is small that moisture content continues desiccation consumption energy below 40%, therefore wants sludge over dry
It can select heat drying or utilize solar energy desiccation.
In the present invention, sludge can mix with stalk and carry out pre- desiccation by microorganism, not only economical but also environmental-friendly
Sludge straw processing disposition, makes dewatered sludge moisture content be down to 40% by 80%, sludge is made to be detached from the plastic stage naturally, do not need to disappear
A large amount of external sources are consumed, energy consumption is greatly saved in this way, reduce sludge drying cost, and the work by microorganism in sludge
With removing wherein foul smell, therefore environmentally friendly.Moisture content continue below 40% desiccation consumption energy it is small, therefore want sludge
Over dry can select heat drying or utilize solar energy desiccation.
The present invention proposes a kind of method that sludge combined stalk powder carries out the pre- desiccation of biology, includes the following steps：
Step 1, sludge pretreatment；
By the sludge of collection after machinery drying or press dewatering processing, the pending dirt that water content is 75%~85% is obtained
Mud；
Step 2, stalk break process；
The straw of collection is directly crushed, the crushing straw of a diameter of below 30mm is obtained after broken.
In the present invention, stalk can be the cauline leaf of wheat, rice, corn, potato, rape, cotton, sugarcane etc., fringe portion
Point.
Step 3 adds composite bacteria agent；
Composite bacteria agent is sprayed in the crushing straw obtained in step 2, it is agitated to be uniformly mixed, obtain the straw containing micropopulation
Stalk powder；The weight percent that composite bacteria agent accounts for crushing straw is 1%~5%；
Composite bacteria agent includes the strains such as whiterot fungi, bacillus alcalophilus, saccharomycete, aspergillus oryzae, nitrobacteria.Wherein, whiterot fungi,
Viable count is 4.5~11.7 × 108CFU；Bacillus alcalophilus, viable count are 0.9~7.5 × 108CFU；Saccharomycete, viable count
It is 1.0~1.92 × 108CFU；Aspergillus oryzae, viable count are 4.8~10.5 × 108CFU；Nitrobacteria, viable count for 1~10 ×
108CFU。
Step 4, initial fermentation；
The straw powder containing micropopulation that step 3 obtains is fermented 2~3 days, obtains initial fermentation straw powder.
In the present invention, the rapid microbial growth and numerous in initial 1~2 day of fermentation of the straw powder containing micropopulation
It grows, tentatively sets up an entirety of strain, mutually cooperate with, as a kind of organism compound formulation that multiple-microorganism coexists,
It is proliferated and acts synergistically by mutual symbiosis simultaneously, aerobic fermentation is formed and stablized and the complicated ecosystem；Pass through microorganism
Growth and breeding activity a small amount of sugar in the straw powder containing micropopulation and oxygen can be converted to carbon dioxide and water, by
In the activity of microorganism, various enzymes are produced, these enzymes destroy cellulose in the straw powder containing micropopulation, half fiber
The structure of dimension element and lignin, makes them degrade step by step, forms various glucides, and nutrient is provided to more microorganisms.
The mixing of step 5, sludge and straw powder；
By the pending mud that step 1 obtains with the initial fermentation straw powder that step 4 obtains is agitated is uniformly mixed, obtain dirt
Mud mixture A；The mixed weight of initial fermentation straw powder and pending mud proportioning is 1:10~20.
The straw powder that initial fermentation is crossed is added in the sludge that water content is 75%~85%.Since microorganism is with stalk
Powder is relies on, therefore its large specific surface area, and metabolism degree is high, adds in sludge, adapts to environment soon, and number is big, breeding
Rapidly, a large amount of profitable strains are brought in the addition of initial fermentation straw powder into, and reduce the viscosity of sludge, are increased between material
Gap plays a crucial role to the degradation of mud organic substance.
Step 6, biological dewatered processing；
By the mud mixture A that step 5 obtains every 10~12 hours at 40 DEG C~50 DEG C of temperature, turning, stir process increase
Add oxygen content therein, also help moisture loss, biological pre- drying and other treatment obtains mud mixture B after 10~15 days.The dirt
The moisture content of mud mixture B drops to 40%~45%.
In the present invention, mud mixture A is had under microorganism species effect using easily biodegradable organics therein
Aerobe fermentation while meeting self-reproduction demand and releases big calorimetric.The irreducible water in sludge is activated simultaneously, reduces its beam
State is tied up, makes the reduction of sludge viscosity, it is easier to moisture evaporation.Microorganism therein generated in metabolic process lipase, protease,
Amylase etc. can degrade the organic matter in sludge, break sludge micelle state, irreducible water activation, conducive to abolishing for water is combined,
Break the plastic stage of sludge.The smelly source organic matter of various enzymes degradation generated in microbial metabolism, it may also reduce stink
It distributes.Microorganism grows about 10~12 hours in sludge straw powder mixture to be handled using turning machine turning, is increased therein
Oxygen content also helps moisture loss.
During the pre- desiccation of biology, microorganism can reach deodorizing effect.Contain whiterot fungi in composite bacteria agent, it is thermophilic
The enzyme generated in the metabolic processes such as bacillus, saccharomycete, aspergillus oryzae, nitrobacteria can be by the organic principle in sludge point
Solution, and using organic matter therein, hydrogen sulfide, ammonia etc., and breeding, fast decoupled can be mushroomed out on sludge straw powder
Smelly source organic matter, while mutual symbiosis is relied on to be proliferated and act synergistically, antioxidant is metabolized out, is formed stable and complexity
The ecosystem inhibits harmful microbe growth and breeding, and the stink that the odorants such as sulfur-bearing, nitrogen is inhibited to generate is net so as to reach
Change sludge, the purpose of deodorization.
In the present invention, the pre- drying cycle of biology is 10~15 days, is in order to which moisture percentage in sewage sludge is made to drop to 40%~45%.It is raw
The pre- desiccation of object can make moisture percentage in sewage sludge drop to 40%~45%, and obtained mud mixture B stablizes, without odor dispersion, sludge
Viscosity, which disappears, to be readily transported and is further processed.Organic matter degradation process heat production promotes plant straw powder fast prompt drop in sludge
Solution, also increases the temperature of heap body, higher heat can be generated, conducive to moisture loss.
In the present invention, continuation desiccation consumption energy is small when mud mixture B moisture content is below 40%, therefore wants dirt
Mud over dry can select heat drying or utilize solar energy desiccation.
In the present invention, the pre- desiccation of biology does not need to external heat source, and the required energy of desiccation is from micro- life in system
The aerobic respiration of object flora, belongs to biological energy source, this be with other heat drying differences, additionally incorporate straw powder, belong to pure life
Object material not only ensures the source of nutrition of microorganism growth, and the gap for also adding sludge consumes stalk simultaneously.The present invention is not
Needing additionally to add other chemical matrix ingredients, to solve existing dewatering rate low, and heat drying consumes energy high technical problem, also carries
The high volume reduction minimizing of sludge, stalk.Product after the pre- desiccation of the present invention not only can be with as fertilizer or Nutrition Soil utilization
Soil aggregate structure is effectively improved, improves soil environment, while can significantly improve crop quality and produce green without public affairs
Evil agricultural product, can be widely used on various agricultural and industrial crops.
Product of the present invention（That is mud mixture B）Efficiently use；
In the present invention, can follow-up outlet be determined according to sludge source and quality.
If the product after municipal sludge and the pre- desiccation of straw powder mixed biologic can return field again, as fertilizer or nutrition
Soil utilizes, due to rich in nutriments and other trace quantity mineral substance elements such as N, P, K, being acted in aerobic bacteria in sludge and straw powder
Lower stable curing, is easy to plant absorption, can be directly used for afforestation, revegetation, backfill etc..
Can also be by mud mixture B power generation by waste combustions, sludge and straw powder moisture content are decreased after desiccation, and solid content increases
Add, remaining clinker can do building materials or landfill disposal.
Embodiment 1
The method for being carried out the pre- desiccation of biology with straw powder using the sludge of sewage treatment plant, is included the following steps：
Step 1, sludge pretreatment；
The sludge of sewage treatment plant through press dewatering is handled and collects 100 kg, obtains the pending mud that water content is 85%；
Step 2, stalk break process；
The straw of collection is directly crushed, the crushing straw of a diameter of below 30mm is obtained after broken
Step 3 adds composite bacteria agent；
Composite bacteria agent is sprayed in the crushing straw obtained in step 2, it is agitated to be uniformly mixed, obtain the straw containing micropopulation
Stalk powder；The weight percent that composite bacteria agent accounts for crushing straw is 5%；
Composite bacteria agent includes the strains such as whiterot fungi, bacillus alcalophilus, saccharomycete, aspergillus oryzae, nitrobacteria.Wherein, whiterot fungi,
Viable count is 4.5~11.7 × 108CFU；Bacillus alcalophilus, viable count are 0.9~7.5 × 108CFU；Saccharomycete, viable count
It is 1.0~1.92 × 108CFU；Aspergillus oryzae, viable count are 4.8~10.5 × 108CFU；Nitrobacteria, viable count for 1~10 ×
108CFU。
Step 4, initial fermentation；
The straw powder containing micropopulation that step 3 obtains is fermented 3 days, obtains initial fermentation straw powder.
The mixing of step 5, sludge and straw powder；
By the pending mud that step 1 obtains with the initial fermentation straw powder that step 4 obtains is agitated is uniformly mixed, obtain dirt
Mud mixture A；The mixed weight of initial fermentation straw powder and pending mud proportioning is 1:10, i.e. initial fermentation straw powder is 10
kg。
Step 6, biological dewatered processing；
The mud mixture A that step 5 is obtained is every 12 hours under temperature 45 C, turning, stir process, at the pre- desiccation of biology
Reason obtains mud mixture B after 15 days.The moisture content of the mud mixture B drops to 40%.1 product of embodiment efficiently uses；
The product that embodiment 1 is obtained can return field again, be utilized as fertilizer or Nutrition Soil, due to the sludge and straw of degradation
Rich in nutriments and other trace quantity mineral substance elements such as N, P, K in stalk powder, stablize curing under the effect of aerobic flora, be easy to plant
Object absorbs.
Embodiment 2
The method for being carried out the pre- desiccation of biology with straw powder using the sludge of petrochemical plant, is included the following steps：
Step 1, sludge pretreatment；
The sludge of petrochemical plant through mechanical drying dehydration is handled and collects 10 kg, obtains the pending mud that water content is 82%；
Step 2, stalk break process；
The straw of collection is directly crushed, the crushing straw of a diameter of below 30mm is obtained after broken
Step 3 adds composite bacteria agent；
Composite bacteria agent is sprayed in the crushing straw obtained in step 2, it is agitated to be uniformly mixed, obtain the straw containing micropopulation
Stalk powder；The weight percent that composite bacteria agent accounts for crushing straw is 1%；
Composite bacteria agent includes the strains such as whiterot fungi, bacillus alcalophilus, saccharomycete, aspergillus oryzae, nitrobacteria.Wherein, whiterot fungi,
Viable count is 4.5~11.7 × 108CFU；Bacillus alcalophilus, viable count are 0.9~7.5 × 108CFU；Saccharomycete, viable count
It is 1.0~1.92 × 108CFU；Aspergillus oryzae, viable count are 4.8~10.5 × 108CFU；Nitrobacteria, viable count for 1~10 ×
108CFU。
Step 4, initial fermentation；
The straw powder containing micropopulation that step 3 obtains is fermented 2 days, obtains initial fermentation straw powder.
The mixing of step 5, sludge and straw powder；
By the pending mud that step 1 obtains with the initial fermentation straw powder that step 4 obtains is agitated is uniformly mixed, obtain dirt
Mud mixture A；The mixed weight of initial fermentation straw powder and pending mud proportioning is 1:20, i.e. initial fermentation straw powder is
0.5 kg。
Step 6, biological dewatered processing；
The mud mixture A that step 5 is obtained is every 10 hours under temperature 50 C, turning, stir process, at the pre- desiccation of biology
Reason obtains mud mixture B after 10 days.The moisture content of the mud mixture B drops to 45%.2 product of embodiment efficiently uses；
Heavy Metals in Sludge through measuring embodiment 2 is exceeded, therefore the product that embodiment 2 is obtained can only be filled or be transported and burn
Factory's power generation by waste combustion is burnt, clinker may be used as building materials or landfill etc..
Embodiment 3
The method for being carried out the pre- desiccation of biology with straw powder using the sludge of fermentation plant, is included the following steps：
Step 1, sludge pretreatment；
The sludge of fermentation plant through mechanical drying dehydration is handled and collects 20 kg, obtains the pending mud that water content is 80%；
Step 2, stalk break process；
The straw of collection is directly crushed, the crushing straw of a diameter of below 30mm is obtained after broken.Step 3 adds
Add composite bacteria agent；
Composite bacteria agent is sprayed in the crushing straw obtained in step 2, it is agitated to be uniformly mixed, obtain the straw containing micropopulation
Stalk powder；The weight percent that composite bacteria agent accounts for crushing straw is 3%；
Composite bacteria agent includes the strains such as whiterot fungi, bacillus alcalophilus, saccharomycete, aspergillus oryzae, nitrobacteria.Wherein, whiterot fungi,
Viable count is 4.5~11.7 × 108CFU；Bacillus alcalophilus, viable count are 0.9~7.5 × 108CFU；Saccharomycete, viable count
It is 1.0~1.92 × 108CFU；Aspergillus oryzae, viable count are 4.8~10.5 × 108CFU；Nitrobacteria, viable count for 1~10 ×
108CFU。
Step 4, initial fermentation；
The straw powder containing micropopulation that step 3 obtains is fermented 3 days, obtains initial fermentation straw powder.
The mixing of step 5, sludge and straw powder；
By the pending mud that step 1 obtains with the initial fermentation straw powder that step 4 obtains is agitated is uniformly mixed, obtain dirt
Mud mixture A；The mixed weight of initial fermentation straw powder and pending mud proportioning is 1:16, i.e. initial fermentation straw powder is
1.25 kg。
Step 6, biological dewatered processing；
By the mud mixture A that step 5 obtains every 12 hours at 40 DEG C of temperature, turning, stir process, at the pre- desiccation of biology
Reason obtains mud mixture B after 14 days.The moisture content of the mud mixture B drops to 41%.3 product of embodiment efficiently uses；
Heavy Metals in Sludge through measuring embodiment 3 is exceeded, therefore the product that embodiment 3 is obtained is placed under the sun, divides drying 2
My god, dewatered sludge moisture content is 20.5%.
Claims (4)
1. a kind of sludge combined stalk powder carries out biological dewatered method, it is characterised in that has the following steps：
Step 1, sludge pretreatment；
By the sludge of collection after machinery drying or press dewatering processing, the pending dirt that water content is 75%~85% is obtained
Mud；
Step 2, stalk break process；
The straw of collection is directly crushed, the crushing straw of a diameter of below 30mm is obtained after broken；Step 3 adds
Add composite bacteria agent；
Composite bacteria agent is sprayed in the crushing straw obtained in step 2, it is agitated to be uniformly mixed, obtain the straw containing micropopulation
Stalk powder；
The weight percent that composite bacteria agent accounts for crushing straw is 1%~5%；
Step 4, initial fermentation；
The straw powder containing micropopulation that step 3 obtains is fermented 2~3 days, obtains initial fermentation straw powder；
The mixing of step 5, sludge and straw powder；
By the pending mud that step 1 obtains with the initial fermentation straw powder that step 4 obtains is agitated is uniformly mixed, obtain dirt
Mud mixture A；
The mixed weight of initial fermentation straw powder and pending mud proportioning is 1:10~20；
Step 6, biological dewatered processing；
By the mud mixture A that step 5 obtains every 10~12 hours at 40 DEG C~50 DEG C of temperature, turning, stir process increase
Add oxygen content therein, also help moisture loss, biological pre- drying and other treatment obtains mud mixture B after 10~15 days；The dirt
The moisture content of mud mixture B drops to 40%~45%.
2. a kind of sludge combined stalk powder according to claim 1 carries out biological dewatered method, it is characterised in that：It is compound
Microbial inoculum includes the strains such as whiterot fungi, bacillus alcalophilus, saccharomycete, aspergillus oryzae, nitrobacteria；Wherein, whiterot fungi, viable count are
4.5~11.7 × 108CFU；Bacillus alcalophilus, viable count are 0.9~7.5 × 108CFU；Saccharomycete, viable count for 1.0~
1.92×108CFU；Aspergillus oryzae, viable count are 4.8~10.5 × 108CFU；Nitrobacteria, viable count are 1~10 × 108CFU。
3. a kind of sludge combined stalk powder according to claim 1 carries out biological dewatered method, it is characterised in that：It is made
Mud mixture B can be used in return soil.
4. a kind of sludge combined stalk powder according to claim 1 carries out biological dewatered method, it is characterised in that：It is made
Mud mixture B can be used in incineration plant power generation by waste combustion, clinker is used as building materials or landfill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810025921.1A CN108178484A (en) | 2018-01-11 | 2018-01-11 | A kind of method that sludge combined stalk powder carries out the pre- desiccation of biology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810025921.1A CN108178484A (en) | 2018-01-11 | 2018-01-11 | A kind of method that sludge combined stalk powder carries out the pre- desiccation of biology |
Publications (1)
| Publication Number | Publication Date |
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| CN108178484A true CN108178484A (en) | 2018-06-19 |
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| CN109250883A (en) * | 2018-11-27 | 2019-01-22 | 内蒙古济世源环保生物科技有限公司 | Method for sludge treatment |
| CN109354520A (en) * | 2018-12-20 | 2019-02-19 | 湖南先导洋湖再生水有限公司 | A kind of aerobic dynamic composting process of continous way using sludge and stalk |
| CN110591974A (en) * | 2019-10-17 | 2019-12-20 | 湖南洁源生物能源科技有限公司 | Preparation and use method of thermophilic microbial agent for leather sludge drying |
| CN111039540A (en) * | 2020-01-07 | 2020-04-21 | 朱云强 | Livestock manure drying system and livestock manure drying method |
| CN112456745A (en) * | 2020-12-24 | 2021-03-09 | 河南省科学院化学研究所有限公司 | Method for drying and treating domestic sludge by aerobic microorganisms and application thereof |
| CN112479756A (en) * | 2020-09-17 | 2021-03-12 | 北京中联蔚蓝科技有限公司 | Method for treating black-odor oxygen-free sludge by using microorganisms |
| CN113800959A (en) * | 2021-09-03 | 2021-12-17 | 刘晓静 | Method for producing biological bacterial fertilizer by using municipal sludge |
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