CN101913923B - Process for treating solid waste compost in hoggery - Google Patents
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- CN101913923B CN101913923B CN2010102325194A CN201010232519A CN101913923B CN 101913923 B CN101913923 B CN 101913923B CN 2010102325194 A CN2010102325194 A CN 2010102325194A CN 201010232519 A CN201010232519 A CN 201010232519A CN 101913923 B CN101913923 B CN 101913923B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- 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 process for treating solid waste compost in a hoggery. On the basis of the traditional compost treatment process and by comprehensively considering the influence of the content of water, pH value, C/N value and other factors on the quality of fertilizer, the invention provides a specific compost operation parameter. After the pig manure is subjected to the compost treatment by using the process of the invention, the fertility of the manure is proper; and the manure is better absorbed by the soil in the same area, thereby relieving the pressure that the manure is absorbed by a large area of land under the condition that the yield of pig manure is higher. The invention has the advantages of simple process, easy realization, high compost efficiency, high agriculture utilization value of the manure and low harm on the soil after being utilized to the farmland.
Description
Technical field
The present invention relates to the waste harmless treatment, be specifically related to a kind of process for treating solid waste compost in hoggery.
Background technology
In recent years, China's animal husbandry development was very fast, and was the most outstanding with live pig and herbivorous animal, and take intensive culture and the residential quarter healthy aquaculture Main Patterns as development, and aquaculture is just towards specialization, mass-producing, intensive future development.
The concentrated discharging of the continuous expansion of intensive culture scale and quantity and the ight soil that breeding production produces, sewage has caused severe environmental pollution, be mainly manifested in following four aspects: 1, pollution of waterhead, according to the assay of environmental administration to the liquid dung of medium-and-large-sized plant eliminating, COD exceeds national standard 50-70 doubly in most plants liquid dung, BOD exceeds national standard 70-80 doubly, SS exceeds national standard 12-20 doubly, colibacillus, roundworm worm's ovum, nitrogen and phosphorus content and other pollutent have also all substantially exceeded the sewage drainage standard of national regulation.The livestock and poultry organic sewage of high density enters rivers and lakes, is the immediate cause of eutrophication, causes the gradually continuous deterioration of death, water quality of aquatic organism to the Organic pollutants sensitivity; Poisonous, the objectionable constituent of feces of livestock and poultry pollutent also penetrate in the underground water easily simultaneously, Groundwater solution content is reduced, and toxic ingredient increases in the water quality, makes water body turn black, foul, lose use value when serious, the waste water control difficulty is large, and it is of a specified duration to pollute time remaining; 2, atmospheric pollution, contain the poisonous and harmful elements such as a large amount of ammonia, sulfide, methane in the foul gas that plant produces, pollute ambient air, had a strong impact on Air quality, harm keeper and surrounding resident are healthy, and also affect the normal growth of livestock and poultry; 3, soil pollution, feces of livestock and poultry and sewage originally are good organic fertilizer, but in the process of using, must grasp its use deal, can not surpass autodigestion, the absorption conversion of plant and the self-purification capacity of soil in soil, as the absorption and conversion capability that exceeds soil or plant will cause rich fertile phenomenon, become benefit and cause harm, even cause that the soil pores is stopped up, soil is ventilative, water-permeable descends and harden, have a strong impact on soil quality; 4, life and production environment are polluted, the mosquitos and flies that does not contain a large amount of pathogenic micro-organisms, parasitic ovum and multiply in the livestock and poultry fecaluria of process harmless treatment and the sewage thereof, can make that the cause of disease kind increases in the environment, bacteria containing amount increases, pathogenic bacteria and parasitic amount reproduction occur, cause spreading of people, animal transmissible disease; Especially during zoonosis, epidemic situation can occur, to the harm of bringing on a disaster property of people, animal.
Prior art mainly contains also for the treatment process of breeding waste that process in the field, processing and industrial treatment are several naturally, and different treatment process has different impacts for cultivation scale, plant's benefits of environment and economy.Although go through the exploratory development of many decades, most of plants of the developed countries such as the U.S., Britain and Japan are now still to go back the field method as the Main Patterns of processing pig plant waste.Organic concentration is too high to be caused the mashed root of crop and burns seedling in order to avoid in the fertilizer, and no matter solid waste or waste water also utilize in the field, all need pass through harmless processing, kill first part parasitic ovum and pathogenic micro-organism, second reduce the harm to ambient soil.
Composting is the important channel of the innoxious and resource utilization of feces of livestock and poultry, the pig farm fecal output is huge, complicated component and unstable, and rot easily, contain multiple pathogenic micro-organism, worm's ovum and heavy metal etc., adopt Waste Composting to process to be at present comparatively economic, practical and effective means.The key of compost treatment organic solid castoff is how to provide good breeding growing environment for microorganism, the factors such as the pH of compost material, humidity, temperature, oxygen supply are all to the composting efficiency important, and also there is significant difference in the soil to the ability to arrange jobs of fertilizer because fertilizer quality is different.
A kind of process for treating solid waste compost in hoggery need to be provided, and technique is simple, and is easy to implement, and composting efficiency is high, and the fertilizer agricultural use is worth high, and the soil intake was high when also the field utilized, and is little to soil harm.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of process for treating solid waste compost in hoggery, technique is simple, and is easy to implement, and composting efficiency is high, and the fertilizer agricultural use is worth high, and the soil intake was high and little to soil harm after also the field utilized.
Process for treating solid waste compost in hoggery provided by the invention comprises the steps:
A. be 100-180 purpose wood fragments bits with fresh pig manure, the flyash that accounts for fresh pig manure weight 1-1.5%, granularity with the water mixing and stirring make moisture content at 71-75% and C/N than being the windrow of 25-30, the pH that regulates described windrow by acid solution or alkali lye is 7.5-8.0;
B. windrow is divided that to pile floorage be 3 * 5-4 * 5m
2, volume is 10-20m
3Buttress heap and leave standstill stacking to becoming thoroughly decomposed, get compost, wherein, windrow heat up and thermophilic fermentation during, turning in per 5 days once, between windrow cooling latter stage of ripening, every 7-8 days turning is once.
Further, among the step c, each buttress heap bottom level is set up in parallel inlet pipe, two adjacent inlet pipe interval 20-25cm, inlet pipe is along self end opening longitudinally, and the other end sealing is distributed with the radial air inlet hole of diameter 3-5mm on the inlet pipe body, two adjacent radial air inlet span 10-12cm, every inlet pipe is pressed 0.20m
3The flow of/min carries out the air inlet at intermittence, and intermittently intake method is: the windrow temperature rise period, every air inlet 8min stopped air inlet 35min again, stopped air inlet 40min behind every air inlet 10min of windrow thermophilic fermentation stage; Stop 45min behind windrow cooling every air inlet 5min of after-ripening stage.
Need to prove that the temperature rise period of the present invention refers to windrow by building the required stage when reaching 50 ℃ to temperature of piling up, the thermophilic fermentation stage refers to that the windrow temperature reaches more than 50 ℃ and stage of heat-preservation fermentation; Cooling is after the after-ripening stage refers to thermophilic fermentation, and the windrow temperature is by 50 ℃ of stages that begin to be reduced to normal temperature.
The invention has the beneficial effects as follows: process for treating solid waste compost in hoggery of the present invention is referred from traditional compost treatment technique, consider moisture content, the pH value, the factors such as C/N value are for the impact of fertilizer quality, specific compost operating parameters is provided, after adopting technique of the present invention that pig manure is carried out compost treatment, the fertilizer fertility is comparatively suitable, soil of the same area is higher to the intake of gained fertilizer of the present invention, alleviated in the larger situation of pig manure output, need a large amount of soils to absorb the pressure of fertilizer, technique of the present invention is simple, is easy to realize, composting efficiency is high, the fertilizer agricultural use is worth, and also the field is little to soil harm after utilizing.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being apparent to those skilled in the art to investigating hereinafter, perhaps can obtain from the practice of the present invention instruction.Target of the present invention and other advantages can realize and obtain by following specification sheets and claims.
Embodiment
The present invention will be further described below with reference to embodiment.
One, material
Take from prosperous grand pig-breeding company limited of subordinate Chongqing Qian Jiang food group of qian river, Chongqing food (group) company limited seed farm for the examination pig manure, flyash is taken from Chongqing Power Plant, and wood chip is taken from Chongqing Kaixian wood-working factory.
Two, equipment
AOC-008 type gas blower
Three, detect index and method:
Sampling: take a sample every 5d in the composting fermentation process, adopt five-spot around the heap body, to reach the center as sampling point, in the different depths collected specimens, the each point sampling quantity is 200g, get after mixing and take back the laboratory about 500g, get the bright sample of part and be stored in 4 ℃ of refrigerators, the 24h inner analysis is complete, all the other natural air dryings are measured nutrient;
Moisture: material in 105 ℃ of dry 5-6h to constant weight, is measured by weight reduction;
Organic: take by weighing oven dry and pulverize about sample 1g in crucible, place 550 ℃～600 ℃ muffle furnace calcinations complete to ashing, its loss of weight is organic content;
PH: take by weighing oven dry sample 2.5g, add the 15mL deionized water, leave standstill after the solid-liquid layering behind the vibration 3min, measure with pH meter;
Total N (TN%): the oven dry sample through wet method disappear boil after, measure its nitrogen content with kjeldahl apparatus;
Total C (TC%): measure with the full-automatic elemental analyser of VrioEL el-emental analyzer;
Total K:(K
2O%): measure with the 220FS atomic absorption spectrophotometer;
Total P (P
2O
5%): measure with ICP inductive coupling plasma emission spectrograph (U.S. Riemann company product);
The compost maturity decision method:
Compost maturity judge to adopt the seed germination experiment method to carry out, and concrete operations are as follows: take wheat seed and Semen Brassicae campestris as material, sample press sample water than 1: 10 at 60 ℃ of lower lixiviate 3h, filtration, absorption filtrate 5mL is to being covered with in 2 filter paper culture dish.10 full rapes of each program request of each culture dish and wheat seed repeat 25 ℃ of lower 36h of cultivation 3 times, survey percentage of germination, and percentage of germination is 80% when above, the judgement compost maturity.
See Table 1 for examination material basic physical and chemical and heavy metal content;
Table 1
Embodiment one:
A. be 100-180 purpose wood fragments bits with fresh pig manure, the flyash that accounts for fresh pig manure weight 1%, granularity with the water mixing and stirring make moisture content 71%, C/N than be 25, pH is 7.5 windrow, pH regulator is by adding acid solution (example hydrochloric acid) or alkali lye (such as the sodium hydroxide solution) realization after the dilution;
B. windrow is divided that to pile floorage be 3 * 5m
2, volume is 10-15m
3Buttress heap and leave standstill stacking to becoming thoroughly decomposed, get compost, windrow heat up and thermophilic fermentation during, turning in per 5 days once, between windrow cooling latter stage of ripening, turning in per 8 days is once got compost and is weighed, analyzes.
Wherein, adopt thermometer to measure and the record compost temperature noon every day, as seen, build heap and begin after rear 1 day to heat up, the stockpile temperature reaches 37 ℃ after 2 days; Rose in the 4th day to the 19th day, the windrow temperature is all more than 45 ℃, the windrow temperature reached 50 ℃ in the 6th day, wherein temperature was kept 12 days more than 50 ℃, the windrow top temperature reaches 53 ℃, when the 6th day, the 11st day, the 16th day, the 26th day and turning in the 34th day, the same day, the temperature of windrow slightly descended, but temperature is gone up immediately behind the turning second day; The windrow temperature descended naturally in the 18th day, illustrated that windrow begins to enter the stage of becoming thoroughly decomposed at this moment, and the C/N of the 41st day windrow is to being reduced to 20: 1.
Embodiment two
A. be 100-180 purpose wood fragments bits with fresh pig manure, the flyash that accounts for fresh pig manure weight 1.5%, granularity with the water mixing and stirring make moisture content 75%, C/N than be 30, pH is 8.0 windrow, pH regulator is by adding acid solution (example hydrochloric acid) or alkali lye (such as the sodium hydroxide solution) realization after the dilution;
B. windrow is divided that to pile floorage be 4 * 5m
2, volume is 16-20m
3Buttress heap and leave standstill stacking, each buttress heap bottom level is set up in parallel inlet pipe, two adjacent inlet pipe interval 20cm, inlet pipe is along self end opening longitudinally, the other end sealing, distribution radial air inlet hole on the inlet pipe body, two adjacent radial air inlet span 10-12cm press 0.20m by every inlet pipe of AOC-008 type gas blower
3The ventilation of/min is carried out the air inlet at intermittence, and intermittently intake method is: the windrow temperature rise period, every air inlet 8min stopped air inlet 35min again, stopped air inlet 40min behind every air inlet 10min of windrow thermophilic fermentation stage; Stop 45min behind windrow cooling every air inlet 5min of after-ripening stage, during windrow intensification and the thermophilic fermentation, turning in per 5 days once, windrow was lowered the temperature between latter stage of ripening, turning in per 7 days is once measured the temperature of compost every day, gets the gained compost and weigh, analyze after windrow becomes thoroughly decomposed.
Wherein, adopt thermometer to measure and the record compost temperature noon every day, build the rear 5h of heap and begin to heat up, the stockpile temperature reaches 40 ℃ after 2 days; Rose in the 3rd day to the 24th day, the windrow temperature is all more than 50 ℃, the windrow temperature reached 55 ℃ in the 5th day, and wherein temperature was kept 16 days more than 55 ℃, and the windrow top temperature reaches 66 ℃, the windrow temperature descends naturally after the 24th day, illustrate that windrow begins to enter the stage of becoming thoroughly decomposed at this moment, the C/N of the 36th day windrow is to being reduced to 20: 1, the 6th day, the 11st day, the 16th day, the 21st day, during turning in the 31st day, the same day, the temperature of windrow slightly descended, but temperature is gone up immediately behind the turning second day.
Embodiment three
A. be 100-180 purpose wood fragments bits with fresh pig manure, the flyash that accounts for fresh pig manure weight 1.3%, granularity with the water mixing and stirring make moisture content 73%, C/N than be 28, pH is 8.0 windrow, pH regulator is by adding acid solution (example hydrochloric acid) or alkali lye (such as the sodium hydroxide solution) realization after the dilution;
B. windrow is divided that to pile floorage be 3.5 * 5m
2, volume is 16-20m
3Buttress heap and leave standstill stacking, each buttress heap bottom level is set up in parallel inlet pipe, two adjacent inlet pipe interval 25cm, inlet pipe is along self end opening longitudinally, the other end sealing, distribution radial air inlet hole on the inlet pipe body, two adjacent radial air inlet span 10-12cm press 0.20m by every inlet pipe of AOC-008 type gas blower
3The ventilation of/min is carried out the air inlet at intermittence, and intermittently intake method is: the windrow temperature rise period, every air inlet 8min stopped air inlet 35min again, stopped air inlet 40min behind every air inlet 10min of windrow thermophilic fermentation stage; Stop 45min behind windrow cooling every air inlet 5min of after-ripening stage, during windrow intensification and the thermophilic fermentation, turning in per 5 days once, windrow was lowered the temperature between latter stage of ripening, and turning in per 7 days is once measured the temperature of compost every day, after windrow becomes thoroughly decomposed, get compost and weigh, analyze.
Wherein, adopt thermometer to measure and the record compost temperature noon every day, build the rear 8h of heap and begin to heat up, the stockpile temperature reaches 40 ℃ after 3 days; Rose in the 4th day to the 23rd day, the windrow temperature is all more than 50 ℃, the windrow temperature reached 55 ℃ in the 5th day, wherein temperature was kept 15 days more than 55 ℃, and the windrow top temperature reaches 64 ℃, and the windrow temperature descends naturally after the 23rd day, the C/N of the 37th day windrow is to being reduced to 20: 1, the 6th day, the 11st day, the 16th day, the 21st day, during turning in the 30th day, the same day, the temperature of windrow slightly descended, but temperature is gone up immediately behind the turning second day.
Embodiment four
A. be 100-180 purpose wood fragments bits with fresh pig manure, the flyash that accounts for fresh pig manure weight 1.0%, granularity with the water mixing and stirring make moisture content 75%, C/N than be 30, pH is 7.5 windrow, pH regulator is by adding acid solution (example hydrochloric acid) or alkali lye (such as the sodium hydroxide solution) realization after the dilution;
B. windrow is divided that to pile floorage be 4 * 5m
2, volume is 10-15m
3Buttress heap and leave standstill stacking, each buttress heap bottom level is set up in parallel inlet pipe, two adjacent inlet pipe interval 22cm, inlet pipe is along self end opening longitudinally, the other end sealing, distribution radial air inlet hole on the inlet pipe body, two adjacent radial air inlet span 10-12cm press 0.20m by AOC-008 type gas blower
3The ventilation of/min is carried out the air inlet at intermittence, and intermittently intake method is: the windrow temperature rise period, every air inlet 8min stopped air inlet 35min again, stopped air inlet 40min behind every air inlet 10min of windrow thermophilic fermentation stage; Stop 45min behind windrow cooling every air inlet 5min of after-ripening stage, during windrow intensification and the thermophilic fermentation, turning in per 5 days once, windrow was lowered the temperature between latter stage of ripening, and turning in per 8 days is once measured the temperature of compost every day, after windrow becomes thoroughly decomposed, get compost and weigh, analyze.
Adopt thermometer to measure and the record compost temperature noon every day, build the rear 7h of heap and begin to heat up, the stockpile temperature reaches 40 ℃ after 3 days; Rose in the 4th day to the 25th day, the windrow temperature is all more than 50 ℃, the windrow temperature reached 55 ℃ in the 5th day, wherein temperature was kept 16 days more than 55 ℃, and the windrow top temperature reaches 65 ℃, and the windrow temperature descends naturally after the 25th day, the C/N of the 36th day windrow is to being reduced to 20: 1, the 6th day, the 11st day, the 16th day, the 21st day, during turning in the 30th day, the same day, the temperature of windrow slightly descended, but temperature is gone up immediately behind the turning second day.
Four, interpretation of result:
4.1 temperature variation in the composting process
The temperature effect microbial activities, further affect organic substance decomposing speed and humification process, compost comprises intensification, thermophilic fermentation and cooling after-ripening stage, decomposition organic in the windrow is mainly carried out at hot stage, and the temperature of hot stage and soaking time can affect the killing effect of microbial activities, organic matter decomposition speed and worm's ovum and pathogenic bacteria.Studies confirm that, the windrow temperature continues 3d and reaches more than 55 ℃, can effectively kill pathogenic bacterium, by above each embodiment temperature variation, each embodiment windrow all can be in continuing at least 3 days more than 55 ℃, satisfy the condition of effectively killing pathogenic bacteria and disease worm's ovum, meet feces of livestock and poultry harmless treatment requirement.Simultaneously, among each embodiment, because add wood chip in windrow, improved organic carbon content, for aerobic microbiological provides better vegetative activity environment, and then so that the windrow fermentation can obtain higher leavening temperature.
4.2 forced ventilation is on the impact of compost fermentation effect
Oxygen directly affects microbial growth activity in the compost, anaerobic reaction easily occurs and produces reducing substances such as hydrogen sulfide and small molecular organic acid etc. in windrow when oxygen supply is not enough, foul smell pollutes surrounding environment and plant-growth is produced toxic action, usually adopt turning or forced ventilation to obtain to satisfy the oxygen of normal growth activity with microorganism in the guarantee windrow, but windrow again can be because dehydration too much produces the mummification effect when too high or forced ventilation amount was excessive when the turning frequency, caused the microorganism growth activity to weaken even stopped; The present invention studies confirm that, when adopting the Natural compost zymotechnique to carry out the swine excrement compost treatment, during windrow intensification and the thermophilic fermentation, turning in per 5 days once, windrow was lowered the temperature between latter stage of ripening, every 7-8 days turning can ensure better that once microorganism growth is movable in the windrow, is more conducive to aerobic composting and carries out; Investigate the temperature variation in each embodiment composting process, as can be known, by draft type provided by the invention windrow is carried out forced ventilation, the temperature of windrow thermophilic fermentation is higher, the high temperature sustained period is longer, total composting time effectively shortens, illustrate that described draft type is in better guarantee oxygen feed rate, can avoid taking away the heat of more windrow, ensure high-temperature duration, improve the efficient of composting, adopt the purpose of intermittent type ventilation to be to avoid causing the windrow moisture loss inhomogeneous and produce layering, the effectively even distribution of control heap body moisture.
4.3 pH changes in the composting process
In the composting process, the pH value changes with the variation of temperature in time, and the general optimum pH value of microorganism is neutrality or weakly alkaline, and the pH value is too high or too low all can to make the composting processing meet difficulty, and each implements to record behind the every sub-sampling of compost pH value such as table 1:
Table 1
| Sample time | The 5th day | The 10th day | The 15th day | The 20th day | The 25th day | The 30th day | After compost becomes thoroughly decomposed fully |
| Embodiment 1 | 7.1 | 8.0 | 8.2 | 8.3 | 8.1 | 8.0 | 7.8 |
| Embodiment 2 | 7.4 | 8.6 | 8.8 | 8.7 | 8.6 | 8.3 | 8.2 |
| Embodiment 3 | 7.5 | 8.5 | 8.7 | 8.8 | 8.6 | 8.4 | 8.3 |
| Embodiment 4 | 7.0 | 8.1 | 8.3 | 8.3 | 8.2 | 8.0 | 7.8 |
As can be seen from the above table: in the fermenting process, the pH value of the 5th day windrow all descends to some extent, raises afterwards in the 10th day, between the 15th day to the 25th day, windrow pH is higher, and pH falls after rise after the 25th day, in the whole process, windrow pH all can keep the slight alkalinity state, and suitable microorganism growth is movable.
4.4 change of soil water content in the composting process
The windrow water content is one of key factor that affects microorganism active and compost success or failure.Per 5 days sampling and measuring water ratio of each embodiment windrow are changed result such as table 2:
Table 2
| Sample time | Build heap | The 5th day | The 10th day | The 15th day | The 20th day | The 25th day | The 30th day | After compost becomes thoroughly decomposed fully |
| Embodiment 1 | 71％ | 68％ | 62％ | 58％ | 52％ | 43％ | 40％ | 37％ |
| Embodiment 2 | 75％ | 71％ | 62％ | 54％ | 48％ | 41％ | 38％ | 36％ |
| Embodiment 3 | 73％ | 69％ | 64％ | 56％ | 50％ | 43％ | 39％ | 37％ |
| Embodiment 4 | 75％ | 71％ | 65％ | 56％ | 49％ | 43％ | 40％ | 38％ |
Analytical table 2 data, as can be known, at the compost initial stage, microbial activities is frequent, discharge amount of heat during organic matter decomposition, moisture evaporates, during compost 10-25 days, the water content lowering speed is very fast, and after becoming thoroughly decomposed fully to compost, the compost water ratio that each embodiment processes is between 36%-38%.
4.5 organic content changes in the compost
Table 3 is in each embodiment windrow composting process, and organic content changes (by percentage to the quality):
Table 3
| Sample time | Build heap | The 5th day | The 10th day | The 15th day | The 20th day | The 25th day | The 30th day | After compost becomes thoroughly decomposed fully |
| Embodiment 1 | 18.1％ | 17.6％ | 16.5％ | 15.4％ | 14.1％ | 13.8％ | 13.1％ | 12.1％ |
| Embodiment 2 | 17.9％ | 17.3％ | 16.1％ | 15.2％ | 13.9％ | 13.2％ | 12.7％ | 114％ |
| Embodiment 3 | 18.0％ | 17.4％ | 16.3％ | 14.9％ | 13.6％ | 12.8％ | 11.5％ | 10.6％ |
| Embodiment 4 | 18.2％ | 17.3％ | 16.1％ | 15.1％ | 14.0％ | 12.9％ | 11.3％ | 10.8％ |
By table 4 data as can be known, adopt composting process of the present invention, after compost becomes thoroughly decomposed fully, organic content lower (such as embodiment 2 to embodiment 4 data as seen) illustrates that composting efficiency is higher, and the organic matter degradation effect is better, behind the compost maturity, in the low situation of organic content, soil is to the corresponding raising of compost intake, thereby alleviates the pressure of a large amount of Land Demands.
4.6 behind the compost maturity, full nitrogen, full potassium and content of tatal phosphorus change such as table 4:
Table 4
As seen, after each embodiment compost treatment, total nitrogen content has comparatively significantly decline from table 4, and the content of total P, total K is then less.
In sum, after adopting technique of the present invention that pig manure is carried out compost treatment, the fertilizer fertility is comparatively suitable, and soil of the same area is higher to the intake of gained fertilizer of the present invention, has alleviated in the larger situation of pig manure output, need a large amount of soils to absorb the pressure of fertilizer, technique of the present invention is simple, is easy to realize, composting efficiency is high, the fertilizer agricultural use is worth, and also the field is little to soil harm after utilizing.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (1)
1. a process for treating solid waste compost in hoggery is characterized in that: comprise the steps:
A. be 100-180 purpose wood fragments bits with fresh pig manure, the flyash that accounts for fresh pig manure weight 1-1.5%, granularity with the water mixing and stirring make moisture content at 71-75% and C/N than being the windrow of 25-30, the pH that regulates described windrow by acid solution or alkali lye is 7.5-8.0;
B. windrow is divided that to pile floorage be 3 * 5-4 * 5m
2, volume is 10-20m
3Buttress heap and leave standstill stacking to becoming thoroughly decomposed, get compost, wherein, each buttress heap bottom level is set up in parallel inlet pipe, two adjacent inlet pipe interval 20-25cm, and inlet pipe is along self end opening longitudinally, the other end sealing, be distributed with the radial air inlet hole of diameter 3-5mm on the inlet pipe body, two adjacent radial air inlet span 10-12cm, every inlet pipe is pressed 0.20m
3The flow of/min carries out the air inlet at intermittence, and intermittently intake method is: the windrow temperature rise period, every air inlet 8min stopped air inlet 35min again, stopped air inlet 40min behind every air inlet 10min of windrow thermophilic fermentation stage; Stop 45min behind windrow cooling every air inlet 5min of after-ripening stage; Windrow heat up and the turning of per 5 days of thermophilic fermentation stage once, windrow cooling every 7-8 of after-ripening stage days turning is once.
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| CN103044094A (en) * | 2012-12-27 | 2013-04-17 | 昆明学院 | Microorganism active phosphate fertilizer prepared from water hyacinth residue and composite microorganism strain |
| CN103570392A (en) * | 2013-10-29 | 2014-02-12 | 太仓市双凤勤之立生态养殖场 | Composting treatment method for waste pig raising fermentation bed |
| CN103964942A (en) * | 2014-04-11 | 2014-08-06 | 牧原食品股份有限公司 | Method for production of organic fertilizer by utilizing pig manure |
| CN106187390A (en) * | 2016-07-25 | 2016-12-07 | 陈翠群 | A kind of base fertilizer improving wheat yield |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1368487A (en) * | 2001-02-01 | 2002-09-11 | 张显军 | Formula and process for preparing efficient biological organic (or semi-organic) fertilizer |
| CN1328228C (en) * | 2005-11-15 | 2007-07-25 | 青岛地恩地生物科技有限公司 | Process for mfg. biological organic fertilizer by urban mud |
| CN101024591A (en) * | 2007-02-10 | 2007-08-29 | 江西省农业科学院土壤肥料与资源环境研究所 | Method for producing organic fertilizer using microbe bacteria to quick fer menting pig's feces |
| CN101284747B (en) * | 2008-05-09 | 2012-07-04 | 广东省农业科学院土壤肥料研究所 | Organic-inorganic slow-released fertilizer and method for preparing same |
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