CN108529837A - It is a kind of using rice husk as the sludge organism drying method of additive - Google Patents
It is a kind of using rice husk as the sludge organism drying method of additive Download PDFInfo
- Publication number
- CN108529837A CN108529837A CN201810340606.8A CN201810340606A CN108529837A CN 108529837 A CN108529837 A CN 108529837A CN 201810340606 A CN201810340606 A CN 201810340606A CN 108529837 A CN108529837 A CN 108529837A
- Authority
- CN
- China
- Prior art keywords
- fermentation
- sludge
- rice husk
- mixing
- additive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C02F11/02—Biological treatment
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of using rice husk as the sludge organism drying method of additive, includes the following steps：S1, rice husk, the conveying of sludge and back-mixing material；S2, rice husk, the mixing of sludge and back-mixing material；S3, mixed material is transported to fermentation tunnel front of the slot by belt conveyor, and mixed material is unloaded to the front end of fermentation tunnel slot；S4, after mixed material enters fermentation stage, fermentation materials are carried out by turning machine to turn over throwing；S5, after fermentation 21 22 days, by fermentation materials from the F fermentation stages of fermentation tunnel slot by belt haulage between clinker, you can obtain the sludge product after desiccation.The present invention uses the biomass that rice husk ferments as co-substrate,, batch mixing good with degree of scatter uniformly, recoverable, receive that fortune is convenient and easily storage, it is suitble to extensive concentration specific resistance to filtration, it realizes fast and efficiently sludge organism drying efficiency, ensures the operation of sludge drying process efficiently, stable.
Description
Technical field
The present invention relates to environmental protection technical fields more particularly to a kind of using rice husk as the sludge organism desiccation side of additive
Method.
Background technology
With the increase of wastewater treatment in China scale and the upgrading of technology, the yield of sewage disposal end products sludge
It improves year by year, shows nearly 30,000,000 tons/year of China's urban sewage treatment plant sludge yield according to data, specific resistance to filtration pressure is huge
Greatly.Effective means of the sludge organism drying technique as extensive specific resistance to filtration at home and abroad morely has been widely used.
Biological drying technology is mainly aerated by forced ventilation enterprising on the by basis of biofermentation compared with sludge aerobic compost technology
The desiccation of row fast dewatering is to reduce the moisture content of sludge.Traditional sludge aerobic fermentation generally requires the auxiliary material for adding high carbon-nitrogen ratio
And back-mixing material, promote biofermentation to adjust most suitable C/N ratios, sludge ratio can also be reduced for the addition of biological dewatered auxiliary material
Weight increases heap body porosity, accelerates moisture evaporation, promotes desiccation process.The type of auxiliary material generally comprises wooden unit, sawdust, rice husk
With agricultural crop straw etc., in actual production, the addition of different auxiliary material needs to correspond to different material proportions and different mistakes
Range control parameter, this plays an important roll drying efficiency promotion.It is abundant in Crop in China stalk resource, it is suitable for sludge
Biological dewatered carry out recycling, but the application of such auxiliary material also has limitation, such as crushes difficult, dispersed poor, storage and transportation
Difficulty is big, is not suitable for centrally disposing on a large scale.The one kind of rice husk as agricultural wastes resource, participating in sludge organism desiccation has
More advantages, such as dispersibility, resistance to bond are good, and heating rate is fast, easily collecting storage and transportation, are suitble to extensive concentration specific resistance to filtration.
Therefore, it is that the sludge organism drying method of additive is used to solve the above problems that we have proposed a kind of using rice husk.
Invention content
The problem of efficiency biological dewatered the purpose of the present invention is to solve promotion slot type, and the one kind proposed is with rice husk
The sludge organism drying method of additive.
It is a kind of using rice husk as the sludge organism drying method of additive, include the following steps：
S1, rice husk, the conveying of sludge and back-mixing material：Rice husk between raw material is transported to by roots blower in fermentation plant
Rice husk feed bin, the sludge between sludge is stored is transported to the sludge storage bin in fermentation plant by plunger pump, utilizes fermenting vehicle
Back-mixing material is transported to back-mixing feed bin by interior belt conveyor from discharge port end；
S2, rice husk, the mixing of sludge and back-mixing material：One layer of sludge is first spread on belt conveyor, then in the upper of sludge
End is paved with rice husk, finally spreads one layer of back-mixing material in the upper surface of rice husk, the material on belt conveyor is delivered to mixing system,
Material be mixed and stirred for uniformly in mixing system；
S3, mixed material is transported to fermentation tunnel front of the slot by belt conveyor, and by mixed material unload to
The front end of fermentation tunnel slot；
S4, fermentation tunnel slot are divided into six fermentation stages of A, B, C, D, E, F from front to back, when mixed material enters fermentation
Duan Hou carries out fermentation materials by turning machine to turn over throwing, is respectively 10min in the aeration control parameter of six fermentation stages,
30min, 30min, 30min, 30min, 30min；
S5, fermentation 21-22 days after, fermentation materials are passed through into belt haulage from the F fermentation stages of fermentation tunnel slot
To between clinker, you can obtain the sludge product after desiccation.
Preferably, the mixed material needs the daily fixed time testing batch mixing uniformity, controls sludge in mixed material, rice husk
Proportioning between back-mixing material is 1: (0.12-0.15): (0.6-0.8), when the ratio of batch mixing overruns, middle control people can be with
Control fine tuning sludge spiral and rice husk revolution speed of screw adjust the ratio of batch mixing.
Preferably, the fermentation section length of the fermentation tunnel slot is 85.5m, the length of six fermentation stages of A, B, C, D, E, F
It is 10m, 10m, 13.5m, 16m, 16m, 20m successively.
Preferably, it needs to carry out throwing the number for turning over, and turning over throwing daily when the turning machine turn over throwing to fermentation materials to be 1
It is secondary, and material forward movement 3.9m-4.1m after throwing is turned over every time.
Preferably, when the temperature of the fermentation tunnel slot is not high or enters winter, the exposure of six fermentation stages of A, B, C, D, E, F
Gas control parameter adjustment is 13min, 20min, 26min, 26min, 13min, 13min.
Preferably, the colter using curved face type knife face, mistake of the two-way knife face of colter in rotation are mixed in the mixing system
Cheng Zhong, material is divided into the helix stream of both direction, and is mixed with the material near colter.
Preferably, the back-mixing material is sludge composting product, and the water content of back-mixing material is 30%-35%, VS 73.8%.
The beneficial effects of the invention are as follows：
1, of the invention, the biomass fermented as co-substrate using rice husk, relative to the agriculture wastes goods and materials such as stalk, sawdust
Source have degree of scatter is good, batch mixing uniformly, recoverable, receive that fortune is convenient and easily storage, be suitble to extensive concentrate Treatment of Sludge
Disposition；
2, of the invention, by the material proportion between sludge and rice husk and back-mixing material, while by regulating and controlling each rank of fermentation tank
Section aeration quantity is aerated state modulator, it can be achieved that fast and efficiently sludge organism drying efficiency, guarantee are dirty especially under cryogenic conditions
The operation of mud drying process efficiently, stable.
Description of the drawings
Fig. 1 be it is proposed by the present invention it is a kind of using rice husk as the low temperature winter of the sludge organism drying method of additive when be aerated
Influence of the Parameters variation for the moisture content that discharges.
Specific implementation mode
The present invention is made further to explain with reference to specific embodiment.
It is a kind of using rice husk as the sludge organism drying method of additive, include the following steps：
S1, rice husk, the conveying of sludge and back-mixing material：Rice husk between raw material is transported to by roots blower in fermentation plant
Rice husk feed bin, the sludge between sludge is stored is transported to the sludge storage bin in fermentation plant by plunger pump, utilizes fermenting vehicle
Back-mixing material is transported to back-mixing feed bin by interior belt conveyor from discharge port end, and back-mixing material is sludge composting product, back-mixing
The water content of material is 34.5%, VS 73.8%；
S2, rice husk, the mixing of sludge and back-mixing material：One layer of sludge is first spread on belt conveyor, then in the upper of sludge
End is paved with rice husk, finally spreads one layer of back-mixing material in the upper surface of rice husk, the material on belt conveyor is delivered to mixing system,
Material be mixed and stirred for uniformly in mixing system, mixing is using the colter of curved face type knife face, colter pair in mixing system
To knife face during rotation, material is divided into the helix stream of both direction, and is mixed with the material near colter, mixes
It closes material and needs the daily fixed time testing batch mixing uniformity, control sludge in mixed material, the proportioning between rice husk and back-mixing material is 1
: (0.12-0.15): (0.6-0.8), when the ratio of batch mixing overruns, middle control people can control fine tuning sludge spiral and rice
Shell revolution speed of screw adjusts the ratio of batch mixing；
S3, mixed material is transported to fermentation tunnel front of the slot by belt conveyor, and by mixed material unload to
The front end of fermentation tunnel slot；
S4, fermentation tunnel slot fermentation section length be 85.5m, fermentation tunnel slot be divided into from front to back A, B, C, D, E,
Six fermentation stages of F, the length of six fermentation stages of A, B, C, D, E, F is 10m, 10m, 13.5m, 16m, 16m, 20m successively, works as mixing
After material enters fermentation stage, throwing turn over to fermentation materials by turning machine, turning machine carries out the when of turning over throwing to fermentation materials and needs
It is 1 time to carry out throwing the number for turning over, and turning over throwing daily, and turns over material forward movement 3.9m-4.1m after throwing every time, is fermented at six
The aeration control parameter of section is respectively 10min, 30min, 30min, 30min, 30min, 30min, when the temperature of fermentation tunnel slot
Not high or when entering winter, the aeration control parameter adjustment of six fermentation stages of A, B, C, D, E, F is 13min, 20min, 26min,
26min, 13min, 13min；
S5, fermentation 21-22 days after, fermentation materials are passed through into belt haulage from the F fermentation stages of fermentation tunnel slot
To between clinker, you can obtain the sludge product after desiccation.
Embodiment one：Rice husk participates in biological dewatered effect assessment as co-substrate auxiliary material.
This experiment is divided into three groups, first group is that maize straw is co-substrate；Second group is that maize straw+rice husk is altogether
Matrix, mass ratio 1: 1；Third group is that rice husk is co-substrate.Material proportion (sludge: co-substrate: back-mixing material) is 1: 0.01:
1.2, aeration control parameter is A sections of 2min/h；B sections of 5min/h；C sections of 15min/h；D sections of 15min/h；E sections of 15min/h；F sections
10min/h.Initial aqueous rate is recorded, and is fermented 22 days after being sufficiently mixed, record discharging moisture content, the results are shown in Table 1：
| Mixture average moisture content (%) | Discharge moisture content (%) | |
| First group | 62.4±4.3 | 50.12±2.82 |
| Second group | 60.9±8.0 | 49.44±3.55 |
| Third group | 60.34±9.84 | 47.47±6.07 |
The experimental result of table 1 indicates：Third group using rice husk as the sludge drying of co-substrate when discharging average moisture content
It is 47.47 ± 6.07%, slightly below raw material is first group and second group, but batch mixing is comparatively uniform.Analysis discharging moisture content
Not up to 35% or less reason may be that raw rice husk additive amount is less or back-mixing material addition is excessive, have in back-mixing material
Machine matter content it is relatively fewer so that influence course of fermentation the reason of.
Embodiment two：Different material is with the evaluation for comparing biological dewatered effect.
This experiment is divided into 5 groups, from first group to the 5th group in sludge, rice husk, back-mixing material material proportion set successively
It is 1: 0.048: 0.89,1: 0.048: 1.1,1: 0.09: 1.93,1: 0.12: 0.88,1: 0.15: 0.65, first group to the 5th group
Mixture initial aqueous rate be followed successively by 56.76%, 57.14%, 64.37%, 59.95%, 55.84%, six fermentation stages
Aeration control parameter is respectively A sections of 2min/h；B sections of 5min/h；C sections of 5min/h；D sections of 15min/h；E sections of 15min/h；F sections：
10min/h。
Experimental result indicates：It further decreases rice husk additive amount (1: 0.048) and is unfavorable for course of fermentation, moisture content is respectively
39.15 ± 2.5 and 39.28 ± 1.6, increase rice husk additive amount to 1: 0.12~1: 0.15, back-mixing material is down to 1: 0.88~1:
When 0.65, ferment effect is ideal, and average moisture content is about 36%, and carbon-nitrogen ratio is 20 at this time.
Embodiment three：It is aerated evaluation of the state modulator for sludge organism desiccation effect.
It is 1: 0.15: 0.6 to control sludge, rice husk, back-mixing material material proportion, daily turning 1 time.Before first group is optimization
Aeration parameter, second group be optimization after aeration parameter, aeration parameter setting it is as shown in table 2：
| Aeration time | A sections | B sections | C sections | D sections | E sections | F sections |
| Parameter before optimization | 2min(45℃) | 5min | 15min | 15min | 15min | 10min |
| Parameter after optimization | 10min | 30min | 30min | 30min | 30min | 30min |
By measurement discharging moisture content (%), as a result indicate：Use optimization aeration parameter discharging moisture content for 34.37 ±
1.84%, hence it is evident that less than aeration parameter 39.97 ± 2.24% before optimization, therefore biology is conducive to using the aeration parameter after optimization
The quick progress of drying process.A sections of temperature rise period microbial activities are higher compared with parameter before optimization, are considered as supplying in this stage
Based on oxygen, suitably increase aeration quantity, thermophilic fermentation microorganism is contributed to quickly to breed, accelerates course of fermentation, B, C, D, E sections not
Consider under Energy-saving Situation that in F sections of dehumidifying stages, this stage fermentation temperature reduces, should increase aeration quantity, add it is contemplated that increasing aeration quantity
Fast biological dewatered process.
Example IV：It is aerated parameter under cryogenic conditions and regulates and controls sludge organism desiccation.
It is 1: 0.15: 0.6 to control sludge, rice husk, back-mixing material material proportion, daily turning 1 time.It is aerated parameter adjustment such as table
Shown in 3：
As shown in Figure 1：After a cycle (22 days) fermentation period, experiment can be seen that from discharging moisture content result
Secondly it is 39.92 ± 2.39% that group 1 moisture content minimum 36.24 ± 3.99% is the discharging moisture content of test group 2, and test group 3
Moisture content is 41.93 ± 4.6%, and test group 2 and 3 moisture content of test group are slightly above control group rate 39.17 ± 3.93%, show the winter
Aeration quantity is suitably reduced under the conditions of season, can preferably be maintained fermentative microorganism active, be promoted biological dewatered process.But aeration quantity drops
Down to such as test group 3 and 4 to a certain degree, can no doubt be maintained to temperature although aeration quantity is low, Institute of Micro-biology's oxygen demand is inevitable
Deficiency causes heap temperature low all the better, and ferment effect is undesirable.Therefore the present invention claims need to take under cryogenic to subtract
Few aeration quantity mode regulates and controls aeration, ensures that heap temperature, the reduction heap temperature of bottom line decline to biological dewatered process
It influences.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of using rice husk as the sludge organism drying method of additive, which is characterized in that include the following steps：
S1, rice husk, the conveying of sludge and back-mixing material：Rice rice husk between raw material being transported to by roots blower in fermentation plant
Shell feed bin, the sludge between sludge is stored is transported to the sludge storage bin in fermentation plant by plunger pump, using in fermentation plant
Belt conveyor back-mixing material is transported to back-mixing feed bin from discharge port end；
S2, rice husk, the mixing of sludge and back-mixing material：One layer of sludge is first spread on belt conveyor, is then spread in the upper end of sludge
Full rice husk finally spreads one layer of back-mixing material in the upper surface of rice husk, the material on belt conveyor is delivered to mixing system, in batch mixing
Material be mixed and stirred for uniformly in system；
S3, mixed material is transported to fermentation tunnel front of the slot by belt conveyor, and mixed material is unloaded to fermentation
The front end of tunnel slot；
S4, fermentation tunnel slot are divided into six fermentation stages of A, B, C, D, E, F from front to back, when mixed material enters fermentation stage
Afterwards, fermentation materials are carried out by turning machine turning over throwing, are respectively 10min, 30min in the aeration control parameter of six fermentation stages,
30min, 30min, 30min, 30min；
S5, after fermentation 21-22 days, by fermentation materials from the F fermentation stages of fermentation tunnel slot by belt haulage to ripe
Between material, you can obtain the sludge product after desiccation.
2. according to claim 1 a kind of using rice husk as the sludge organism drying method of additive, which is characterized in that described
Mixed material needs the daily fixed time testing batch mixing uniformity, controls sludge in mixed material, the proportioning between rice husk and back-mixing material
Be 1: (0.12-0.15): (0.6-0.8), when the ratio of batch mixing overruns, middle control people can control fine tuning sludge spiral and
Rice husk revolution speed of screw adjusts the ratio of batch mixing.
3. according to claim 1 a kind of using rice husk as the sludge organism drying method of additive, which is characterized in that described
The fermentation section length of fermentation tunnel slot is 85.5m, the length of six fermentation stages of A, B, C, D, E, F be successively 10m, 10m, 13.5m,
16m、16m、20m。
4. according to claim 1 a kind of using rice husk as the sludge organism drying method of additive, which is characterized in that described
It needs to carry out throwing the number for turning over, and turning over throwing daily when turning machine turn over throwing to fermentation materials to be 1 time, and turns over object after throwing every time
Material moves forward 3.9m-4.1m.
5. according to claim 1 a kind of using rice husk as the sludge organism drying method of additive, which is characterized in that described
When the temperature of fermentation tunnel slot is not high or enters winter, the aeration control parameter adjustment of six fermentation stages of A, B, C, D, E, F is
13min, 20min, 26min, 26min, 13min, 13min.
6. according to claim 1 a kind of using rice husk as the sludge organism drying method of additive, which is characterized in that described
Mixing is using the colter of curved face type knife face in mixing system, and for the two-way knife face of colter during rotation, material is divided into two sides
To helix stream, and mixed with the material near colter.
7. according to claim 1 a kind of using rice husk as the sludge organism drying method of additive, which is characterized in that described
Back-mixing material is sludge composting product, and the water content of back-mixing material is 30%-35%, VS 73.8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810340606.8A CN108529837A (en) | 2018-04-17 | 2018-04-17 | It is a kind of using rice husk as the sludge organism drying method of additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810340606.8A CN108529837A (en) | 2018-04-17 | 2018-04-17 | It is a kind of using rice husk as the sludge organism drying method of additive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108529837A true CN108529837A (en) | 2018-09-14 |
Family
ID=63480929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810340606.8A Pending CN108529837A (en) | 2018-04-17 | 2018-04-17 | It is a kind of using rice husk as the sludge organism drying method of additive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108529837A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940452A (en) * | 2020-06-24 | 2020-11-17 | 中农新科(苏州)有机循环研究院有限公司 | Biological drying sectional type aeration method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407367A (en) * | 2007-10-10 | 2009-04-15 | 中国环境科学研究院 | Back mixing method for pretreatment of sludge |
| CN101602620A (en) * | 2009-06-02 | 2009-12-16 | 清华大学 | The method of aerobic composting with urban sewage and sludge |
| CN102838394A (en) * | 2012-08-28 | 2012-12-26 | 贵州泰然环境科技有限责任公司 | Aerobic composting technique for sludge from sewage treatment plant |
| CN104496569A (en) * | 2014-11-26 | 2015-04-08 | 郑州大学 | Biodegradable sludge-compost fermentation conditioning agent and application thereof |
| CN107698281A (en) * | 2017-09-18 | 2018-02-16 | 南阳市宣溢环保设备股份有限公司 | A kind of aerobic fermentation process |
-
2018
- 2018-04-17 CN CN201810340606.8A patent/CN108529837A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407367A (en) * | 2007-10-10 | 2009-04-15 | 中国环境科学研究院 | Back mixing method for pretreatment of sludge |
| CN101602620A (en) * | 2009-06-02 | 2009-12-16 | 清华大学 | The method of aerobic composting with urban sewage and sludge |
| CN102838394A (en) * | 2012-08-28 | 2012-12-26 | 贵州泰然环境科技有限责任公司 | Aerobic composting technique for sludge from sewage treatment plant |
| CN104496569A (en) * | 2014-11-26 | 2015-04-08 | 郑州大学 | Biodegradable sludge-compost fermentation conditioning agent and application thereof |
| CN107698281A (en) * | 2017-09-18 | 2018-02-16 | 南阳市宣溢环保设备股份有限公司 | A kind of aerobic fermentation process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940452A (en) * | 2020-06-24 | 2020-11-17 | 中农新科(苏州)有机循环研究院有限公司 | Biological drying sectional type aeration method |
| CN111940452B (en) * | 2020-06-24 | 2022-10-14 | 中农新科(苏州)有机循环研究院有限公司 | Biological drying sectional type aeration method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101108779B (en) | Method of manufacturing organic, inorganic compound fertilizer with molasses zymolysis waste liquor and lime sludge | |
| CN106754461B (en) | Biological floc and preparation method and application thereof | |
| CN102557368A (en) | High-temperature aerobic composting treatment process for municipal sludge | |
| CN104370582B (en) | A kind of organic waste odorless aerobic compost method | |
| CN202988933U (en) | Sludge treatment land resource utilization system | |
| CN102020360B (en) | Treatment method of rubber production wastewater | |
| CN108409435B (en) | Sludge aerobic composting method | |
| CN103396177B (en) | Method for manufacturing bio-fertilizer by using domestic sludge | |
| CN207891281U (en) | A kind of production system of charcoal base compound organic and inorganic fertilizer | |
| CN104261918A (en) | Organic fertilizer fermentation method | |
| CN109180240A (en) | A kind of method of quick aerobic compost | |
| CN102936159B (en) | Method for producing compost by using beer production waste | |
| CN109526762A (en) | The cattle farm fermenting bed padding and preparation method thereof that after separating dry space from moist space prepared by cattle manure residue | |
| CN107056552A (en) | A kind of utilization excess sludge and agriculture and forestry organic waste material prepare the device of fertilizer | |
| CN102515886A (en) | Process for producing biological bacterial fertilizer by taking domestic sewage plant dewatered sludge as raw material | |
| CN102093098A (en) | Method for preparing fertilizer by using domestic sludge | |
| CN108636992B (en) | Garden waste aerobic fermentation energy recycling process | |
| CN111574254A (en) | Production process for fermenting organic fertilizer by utilizing Maotai-flavor liquor vinasse | |
| US7927848B2 (en) | Method and apparatus for production of biogas from an organic material | |
| CN108529837A (en) | It is a kind of using rice husk as the sludge organism drying method of additive | |
| CN105503301A (en) | Solid waste aerobic composting and biological drying method | |
| JPS6041593A (en) | Treatment of waste liquid of shochu(low-class distilled spirits) | |
| CN108440032A (en) | A method of control sludge composting Ammonia valatilization | |
| CN108774081A (en) | A kind of resource utilization method of feces of livestock and poultry | |
| Syamsu et al. | Application of technology for processing rice straw as feed for beef cattle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |