CN106673399A - Municipal sludge blending modifying agent and sludge semi-drying method - Google Patents

Municipal sludge blending modifying agent and sludge semi-drying method Download PDF

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Publication number
CN106673399A
CN106673399A CN201510758318.0A CN201510758318A CN106673399A CN 106673399 A CN106673399 A CN 106673399A CN 201510758318 A CN201510758318 A CN 201510758318A CN 106673399 A CN106673399 A CN 106673399A
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Prior art keywords
sludge
component
municipal
mixed
semi
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CN201510758318.0A
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CN106673399B (en
Inventor
王勇
谢国欣
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Sichuan Huan'ao Sludge Disposal Technology Co Ltd
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Sichuan Huan'ao Sludge Disposal Technology Co Ltd
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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
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • 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
    • 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
    • C02F11/004—Sludge detoxification
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/02—Odour removal or prevention of malodour
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/06—Sludge reduction, e.g. by lysis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/10—Drying by heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/20—Dewatering by mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/12—Sludge, slurries or mixtures of liquids

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatment Of Sludge (AREA)

Abstract

In allusion to the defect that in the prior art, sludge blending modifying products and methods have a poor sludge reducing effect, which ultimately causes reduction in actual sludge utilizing and disposing efficiency, the invention provides a municipal sludge blending modifying agent and a using method thereof. The municipal sludge blending modifying agent comprises a component A, a component B and a component C, wherein the component A is a mixed solution of a bamboo-vinegar stock solution and a lactic acid bacterium-fermented stock solution; the component B is a hydrogen peroxide solution with the concentration of 30%; the component C is a polyaluminum solution with the concentration of 30%. The using method of the municipal sludge blending modifying agent comprises the following steps: sequentially adding the components into sludge, stirring, adjusting the pH value, and layering to obtain the blended modified sludge. The invention further provides a sludge semi-drying method by which physical pressure filtration is performed on the blended modified sludge. The municipal sludge blending modifying agent is simple in components and good in sludge modifying effect; the using method is simple and convenient in process and easy to implement; by the sludge semi-drying method, sterilization, deodorization and deep dewatering during sludge treatment can be completed at one time, the dewatering reduction effect is obvious, and the sludge disposing efficiency can be improved.

Description

Municipal sludge is mixed to adjust modification agent, sludge semi-dry method
Technical field
The present invention relates to a kind of municipal sludge processes product and method, more particularly to a kind of municipal administration is dirty Mud is mixed to adjust modification agent and its using method, and a kind of semi-oriented method of municipal sludge, belongs to environment Chemical industry, sludge treatment field.
Background technology
Municipal sludge is the product of sewage disposal, is mainly derived from the primary deposition of sewage treatment process The process procedures such as pond, secondary sedimentation tank, gravity concentration tank.With China's urban wastewater treatment rate Improve constantly, urban wastewater treatment firm sludge yield is also sharply increased.According to incompletely statistics, at present National urban wastewater treatment firm sludge only fraction carry out sanitary landfills, Land_use change, burning and Building materials are utilized, and major part does not carry out normalized process and disposes.Sludge contains pathogen, weight The poisonous and harmful substance such as metal and persistent organism, disposes, easily to underground without effective process Water, soil etc. cause secondary pollution, direct threatening environment safety and public health, make sewage disposal The environmental benefit of facility is substantially reduced.Therefore municipal sludge processes disposal and becomes during urban development Urgent problem.
Municipal sludge is that a kind of moisture content is high, bulky, often containing high concentration has a pollutant and perishable Smelly suspension is lost, also often containing poisonous dirts of poisonous and harmful such as pathogen, parasitic ovum and heavy metals Dye thing, hydrophily is strong, and volatile solid content is high, and bigger than resistance, dewatering is poor.To municipal administration The process disposal technology of sludge includes processing and disposes two stages.Process is primarily referred to as entering sludge Row stabilisation, minimizing, the process of harmless treatment.Disposal refers to and sludge after process is disappeared The process received, is the ultimate aim of specific resistance to filtration.Sludge is a kind of clayey resource, sludge Disposal include Land_use change, burn and building materials utilize, fill etc. mode.
Building materialsization, using being one of mode of municipal sludge final disposal, are also one of preferable mode. , by the use of being primarily referred to as manufacturing construction material as raw material using sludge, final product is can for the building materials of sludge For the material or product of engineering.The major way that building materials are utilized has：Sewage sludge sintering brickmaking, dirt Mud is used for firing (i.e. cement kiln collaboration is processed and disposed), sludge potting grain of clinker etc..
Mummification/semi-oriented sludge incineration is using the heat and additional auxiliary fuel in sludge, by combustion Burning realizes the process of the thorough harmlessness disposing of sludge.Using steam power plant's cooperative disposal mummification/semi-oriented dirt Mud is to burn mummification/semi-oriented sludge input CFBB or coal-powder boiler, using semi-oriented The characteristics of semi-oriented sludge ignition point caused by the loose bulk structure of sludge is low, auxiliary heat supplying again may be used It is current preferably one of municipal sludge disposal options by the use of steam power plant's waste heat as mummification thermal source.
Municipal sludge moisture content is very high.Generally, Sewage Plant second pond moisture percentage in sewage sludge is 99% More than, Sewage Plant gravity concentration tank moisture percentage in sewage sludge is also 97% or so.Moisture percentage in sewage sludge is different, Its state is also differed, and directly affects and it is processed, the mode and means that can be selected is disposed.Cause This no matter any disposal options, all firstly the need of processing sludge, its target is by municipal administration Sludge stabilizing, minimizing, obtain mummification/semi-oriented sludge.It is existing to solve the technical problem Technology mainly includes two classes：One class is to increase various chemical reagent in primary sludge to facilitate chemical anti- Should, then to reacted sludge physics press filtration, i.e. method of the chemical modification in combination with physics press filtration. The semi-oriented moisture percentage in sewage sludge that this kind of method is obtained is about 60%.Application number 2015101133096, A kind of sludge normal temperature disclosed in the Chinese invention patent application of the A of application publication number CN 104761116 The method of deep dehydration adds 8 kinds of chemical reagent in sludge.The method high cost, and enter one Step complicates sludge chemical property, further increases the difficulty of later-stage utilization.Another kind of is to primary Dry ratio in adding flyash, lime etc. in sludge to increase sludge.The method can not have Imitate to reduce and process sludge quality, on the contrary because addition flyash, lime make pending mud and its mixes The amount of compound material further increases, thus the actual utilization disposal efficiency of sludge is reduced, and increases Big follow-up sludge treatment amount and cost of disposal.
The content of the invention
The purpose of the present invention is aiming at the deficiencies in the prior art, there is provided a kind of municipal sludge is mixed to adjust and reform Matter agent and its using method.The product can effectively change sludge glial state, facilitate sludge efficient Dehydration.The present invention is also provided and the sludge semi-dry method for adjusting modification agent to realize is mixed using the municipal sludge.
For achieving the above object, present invention firstly provides a kind of municipal sludge is mixed to adjust modification agent, its skill Art scheme is as follows：
A kind of municipal sludge is mixed to adjust modification agent, it is characterised in that：Including component A, component B, group Divide C；
Component A is the mixed solution of bamboo-vinegar and lactobacillus-fermented stoste, mixture
Product ratio is bamboo-vinegar 60%～80%, lactobacillus-fermented stoste 40%～20%；
Component B is the hydrogen peroxide solution of mass concentration 30%；
Component C is the multiple poly-aluminium solution of mass concentration 30%.
Above-mentioned municipal sludge is mixed to adjust modification agent to include three kinds of components.In component A, bamboo-vinegar be Bamboo wood collects the gas that bamboo wood is produced in pyrolytic during making charcoal, and this gas is existed The liquid substance directly obtained after cooling down under normal temperature, without concentration or dilution.Lactobacillus-fermented is former Liquid is temperature and the nutritional condition that artificial creation lactic acid bacteria is easy to breed, and makes lactic acid bacteria in anaerobic fermentation The liquid for obtaining freely is bred under state, without concentration or dilution.Municipal sludge of the present invention is mixed to be adjusted Modification agent is by various natural polymer organic compounds, the nothing contained by bamboo-vinegar in component A Machine compound etc. produces chemical reaction, and the biodegradable activity of lactic acid bacteria with component in sludge, Volatile solid content is reduced, sludge hydrophily is reduced, is reduced sludge stink.Component B is concentration 30% hydrogen peroxide solution is used for sludge oxidation disinfection.The multiple poly-aluminium of component C be aluminum sulfate, hydrochloric acid, A kind of common high polymer coagulant prepared by sulfuric acid, nitrogen compound auxiliary agent, by its macromolecule and Institute's charging property, promotes the colloidal particles and other suspended particulates in sludge in sludge contact process It is condensed into floccule and adsorbs, winds pollutant and separate with water body, so as to contributes to realizing that sludge takes off Water.
The present invention also provides above-mentioned municipal sludge and mixes the using method for adjusting modification agent, and its technical scheme is such as Under：
Above-mentioned municipal sludge mixes the using method for adjusting modification agent, it is characterised in that：To in municipal sludge Component A is added, is sufficiently stirred for, add component B, be sufficiently stirred for, adjusted to pH=7～11； Component C is added, is sufficiently stirred for, treat that supernatant is layered with flocks sludge, flocks sludge blanket is as mixed Adjust and reform the sludge after matter.
Above-mentioned municipal sludge is mixed to adjust modification agent using method under optimum condition, and each component addition is： Component A and municipal sludge volume ratio=0.5%～3%, component B and municipal sludge volume ratio= 0.5%～1%, component C and municipal sludge volume ratio=0.1%～0.5%.Under usual conditions, adjust Section pH value adopts CaO, Ca (OH)2、Na2CO3、NaHCO3It is arbitrary.
Jing experiment tests show, the municipal sludge for adjusting modification agent to realize is mixed using municipal sludge of the present invention It is mixed adjust that method for modifying obtains it is mixed adjust and reform matter sludge due to by chemical reaction reduce hydrophily, Stink substance and sterilization are eliminated, thus further can be taken off by the depth of mechanism filter-pressing Water is sterilized, the semi-oriented sludge of odorless.
The present invention further provides a kind of mix the using method reality for adjusting modification agent using above-mentioned municipal sludge The semi-oriented method of existing municipal sludge, its technical scheme is as follows：
A kind of municipal sludge that the using method realization for adjusting modification agent is mixed using above-mentioned municipal sludge is half-dried Change method, it is characterised in that：By above-mentioned flocks sludge blanket sludge Jing filter press press filtrations.
Jing experiment tests show, mixed to adjust and reform matter sludge Jing after filter press press filtration, the semi-oriented mud cake of gained Moisture content 46%～52%, and odorless.The semi-oriented sludge of gained Jing after broken, natural air drying again Moisture content is further reduced to less than 40%.Sludge dewatering, reduction are fairly obvious, Neng Goujin One step building materialsization are utilized.Air-drying after semi-oriented cake crushing can be dry using tunnel type forced ventilation Dry or natural air drying.
The semi-oriented sludge of the semi-oriented method gained of municipal sludge of the present invention can be used for incineration disposal, such as Steam power plant, garbage incinerating power plant cooperative disposal etc., it can also be used to which the building materials utilization of resources is as produced Fired brick, haydite, cement cooperative disposal etc., complete more complete sludge treatment.Accordingly, this Bright to further provide for a kind of sludge incineration method of disposal, its technical scheme is as follows：
A kind of municipal sludge incineration disposal method realized using the semi-oriented method of above-mentioned municipal sludge. The method is that the semi-oriented sludge for obtaining sludge semi-dry method of the present invention is used for waste incineration and generating electricity Factory cooperates with burning electricity generation.
Compared with prior art, the invention has the beneficial effects as follows：(1) municipal sludge of the present invention is mixed adjusts Modification agent component is simple, and chemical reaction is few, is conducive to improving the chemical stability of sludge.(2) profit Adjust modification agent mixed to municipal sludge can adjust and reform matter with municipal sludge of the present invention is mixed, gained is mixed to adjust and reform matter Sludge can direct plunge into diaphragm filter press and carry out mechanism filter-pressing dehydration, can make killing for Treatment of Sludge Bacterium, deodorant, deep dehydration are once completed.(3) the semi-oriented method gained half of municipal sludge of the present invention Dewatered sludge moisture content is substantially below 50%, and sludge reduction effect substantially, disclosure satisfy that further The requirement for the treatment of and use.(4) municipal sludge of the present invention is mixed adjusts modification agent component simple, common, plus Work low cost；Its using method operating procedure is succinct, technological standards are low, and implementation cost is low, is easy to Promote.
Specific embodiment
With reference to embodiment, the preferred version of the present invention is further described.
Embodiment one
Prepare a kind of mixed tune modification agent of municipal sludge.
1st, raw material
Hydrogen peroxide：Concentration 30%, technical grade
Bamboo-vinegar：It is commercially available
Lactobacillus-fermented stoste：It is commercially available
Multiple poly-aluminium：Commercially available, technical grade adds water and is configured to the multiple poly-aluminium solution of mass concentration 30%.
2nd, prepare
It is prepared by 2.1 components A (bamboo vinegar lactic acid mixed liquor)
Bamboo-vinegar, lactobacillus-fermented stoste are taken, is well mixed according to the ratio of table 1.1.Gained bamboo vinegar Lactic acid mixed liquor independent packaging, is respectively component A1, component A2, component A3.
The bamboo vinegar lactic acid mixed liquor proportioning (unit of table 1.1：Percent by volume)
Numbering 1 Numbering 2 Numbering 3
Proportioning, % Proportioning, % Proportioning, %
Bamboo-vinegar 60 70 80
Lactobacillus-fermented stoste 40 30 20
It is prepared by 2.2 mixed tune modification agent components B
Take 30% hydrogen peroxide independent packaging.
It is prepared by 2.3 mixed tune modification agent components C
Take 30% multiple poly-aluminium solution independent packaging.
Component A1, component B, component C, component A2, component B, component C, component A3, Component B, component C, each composition municipal sludge is mixed to adjust modification agent.
Embodiment two
The gained municipal sludge of embodiment one mixes the use and sludge semi-dry for adjusting modification agent.
1st, raw material, equipment
Municipal sludge is mixed to adjust modification agent：Embodiment one is obtained
Municipal sludge：Certain city's sludge of sewage treatment plant, moisture content 90%～97%
CaO：It is commercially available, technical grade
Diaphragm filter press：Commercially available " Jing Jin " board full-automatic high-pressure diaphragm filter press XMAZGF20/800-U。
2nd, municipal sludge is mixed adjusts upgrading operation
Take each 5m of 3 parts of municipal sludges sample N1, N2, N33, in sludge sample component A1 is separately added into Or component A2 or each 150L of component A3, uniform stirring 15min；Component B 25L is separately added into, Uniform stirring 15min；CaO conditioning of mud is separately added into pH=7～9；It is separately added into component C 5L, uniform stirring 15min, stand 60min.Treat that supernatant is clearly separated with flocks sludge, take out Supernatant is removed, remaining flocks layer sludge is respectively 9 parts of mixed output sludge adjust and reform after the completion of matter.
Table 2.1 is mixed to adjust modifying process sludge sample
3rd, sludge press filtration operation
Respectively the mixed output sludge adjust and reform after the completion of matter is pumped into into diaphragm filter press press filtration, filter work Pressure 0.8Mpa, squeezes operating pressure 2.0Mpa.Sludge after press filtration completes deep dehydration, obtains To 9 parts of semi-oriented sludge sample.Semi-oriented sludge sample numbering adjusts and reform matter sludge sample numbering with table 2.1 is mixed.
4th, semi-oriented sludge detection
It is each from 9 parts of semi-oriented sludge samples of gained respectively to take 3 samples at random and detected, count Calculate testing result mean value.Testing result such as table 2.2.
The semi-oriented sludge sample detection of table 2.2
Testing result shows, by product of the present invention the sludge Jing one-time mechanical press filtrations adjust and reform after matter are mixed Can be dehydrated to 50% or so, and gained sludge has completed sterilized, deodorant, shows using this method reality The sludge semi-dry technique applied can make that municipal sludge is sterilized, deodorant, deep dehydration is once completed. Again moisture content is further reduced to less than 40% to gained sludge Jing after broken, natural air drying.
Embodiment three
The gained municipal sludge of embodiment one mixes the use for adjusting modification agent, itself and the something in common of embodiment two It is not repeated, its difference is that municipal sludge is mixed adjusts modification agent addition.
Municipal sludge is mixed to adjust upgrading operation：Take each 5m of 3 parts of municipal sludges sample M1, M2, M33, Component A1 or component A2 or each 25L of component A3, uniform stirring are separately added in mud sample 15min；Add component B 50L, uniform stirring 15min；CaO conditioning of mud is added to pH= 9～11；Component C 25L, uniform stirring 15min are added, 60min is stood.Treat supernatant and coagulate Wadding sludge is clearly separated, and pumps supernatant, and remaining flocks layer sludge is respectively 9 parts and mixed adjusts and reform matter After the completion of output sludge.
Table 3.1 is mixed to adjust modifying process sludge sample
Sludge press filtration is operated：Respectively the mixed output sludge adjust and reform after the completion of matter is pumped into into diaphragm filter press Press filtration, filters operating pressure 0.8Mpa, squeezes operating pressure 2.0Mpa.Sludge after press filtration has been Into deep dehydration, 9 parts of semi-oriented sludge sample is obtained.Semi-oriented sludge sample numbering is adjusted with table 3.1 is mixed Modification sludge sample numbering.
It is mixed to three times above to adjust and reform the semi-oriented sludge after matter deep dehydration, three samples are respectively taken at random Detected, as a result table 3.2.
The semi-oriented sludge sample detection of table 3.2
Testing result shows that the sludge semi-dry technique implemented using this method can make municipal sludge Sterilized, deodorant, deep dehydration is once completed.Gained sludge is aqueous Jing after broken, natural air drying again Rate is further reduced to less than 40%.

Claims (10)

1. municipal sludge is mixed adjusts modification agent, it is characterised in that：Including component A, component B, component C；
Component A is the mixed solution of bamboo-vinegar and lactobacillus-fermented stoste, mixture Product ratio is bamboo-vinegar 60%～80%, lactobacillus-fermented stoste 40%～20%；
Component B is the hydrogen peroxide solution of mass concentration 30%；
Component C is the multiple poly-aluminium solution of mass concentration 30%.
2. mixed tune modification agent according to claim 1, it is characterised in that：Bamboo in component A Vinegar stoste is bamboo-vinegar 70%, lactobacillus-fermented stoste with the volume ratio of lactobacillus-fermented stoste 30%.
3. municipal sludge according to claim 1 and 2 mixes the using method for adjusting modification agent, its feature It is：Component A is added in municipal sludge, is sufficiently stirred for, add component B, be sufficiently stirred for, Adjust to pH=7～11, add component C, be sufficiently stirred for, treat supernatant with flocks sludge point Layer, flocks sludge blanket is as mixed to adjust and reform the sludge after matter.
4. method according to claim 3, it is characterised in that：The municipal sludge moisture content 90%～97%.
5. it is dirty that the municipal administration for adjusting the using method of modification agent to realize is mixed using municipal sludge described in claim 3 The semi-oriented method of mud, it is characterised in that：By the flocks sludge blanket sludge press filtration.
6. the described semi-oriented method of municipal sludge according to claim 5, it is characterised in that：City Political affairs moisture percentage in sewage sludge 90%～97%.
7. the method according to claim 4 or 6, it is characterised in that：The component A addition For：Component A and sludge volume ratio=0.5%～3%.
8. the method according to claim 4 or 6, it is characterised in that：The component B addition is： Component B and sludge volume ratio=0.5%～1%.
9. the method according to claim 4 or 6, it is characterised in that：The component C addition is： Component C and sludge volume ratio=0.1%～0.5%.
10. the method according to claim 5 or 6, it is characterised in that：Adjust to pH=9.
CN201510758318.0A 2015-11-09 2015-11-09 Municipal sludge is mixed to adjust modification agent, sludge semi-dry method Active CN106673399B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019136688A (en) * 2018-02-15 2019-08-22 学校法人長崎総合科学大学 Manufacturing method of fermentation pellet
CN116835838A (en) * 2023-08-31 2023-10-03 松谷科技(福建)有限公司 Sludge deodorization drying decrement treatment process

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101381249A (en) * 2008-10-14 2009-03-11 邹炎 Method for preparing sludge frozen composite fertilizer and sludge frozen composite fertilizer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101381249A (en) * 2008-10-14 2009-03-11 邹炎 Method for preparing sludge frozen composite fertilizer and sludge frozen composite fertilizer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019136688A (en) * 2018-02-15 2019-08-22 学校法人長崎総合科学大学 Manufacturing method of fermentation pellet
JP7011811B2 (en) 2018-02-15 2022-02-10 学校法人長崎総合科学大学 Fermented pellet manufacturing method
CN116835838A (en) * 2023-08-31 2023-10-03 松谷科技(福建)有限公司 Sludge deodorization drying decrement treatment process
CN116835838B (en) * 2023-08-31 2023-11-17 松谷科技(福建)有限公司 Sludge deodorization drying decrement treatment process

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