CN105217912A - A kind of municipal sludge efficient energy-saving quick biological drying technology - Google Patents
A kind of municipal sludge efficient energy-saving quick biological drying technology Download PDFInfo
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- CN105217912A CN105217912A CN201510582971.6A CN201510582971A CN105217912A CN 105217912 A CN105217912 A CN 105217912A CN 201510582971 A CN201510582971 A CN 201510582971A CN 105217912 A CN105217912 A CN 105217912A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses the method for the quick mummification of a kind of municipal sludge efficient energy-saving, utilize high-temperature strain and corresponding aeration structure, by quick for municipal sludge mummification, accelerate mummification process, save the energy.55 DEG C of pliotherm periods maintain 20 days, and 65 DEG C of pliotherm periods maintain 13 days, are conducive to the harmful pathogeny bacterium thoroughly killed in mud.Meanwhile, the method for the invention makes drying process obtain mass-producing in conjunction with the use of described equipment.
Description
Technical field
The present invention relates to a kind of sludge disposal technology, specifically a kind of municipal sludge efficient energy-saving quick biological drying technology.
Background technology
Mud is the material produced in sewage treatment process, it is based on microorganism, comprise the synthesis of the material such as organism, metal, germ, worm's ovum being mixed into the solid particulate such as silt, fiber, plant and animal residues in sanitary sewage or industrial and mineral waste water and absorption thereof simultaneously, its main characteristic is that organic content is high, particle is thinner, water ratio is high, dehydration difficulty.Contain the nitrogen needed for growth and development of plants, phosphorus, potassium in mud and maintain the various trace elements that plant normal growth is grown and the organic matter that Soil structure can be improved, after composting, as Fertilizer application, there is the potential advantage of certain value.Organic poison simultaneously also containing pathogenic micro-organism, parasite (ovum), heavy metal and some difficult degradation.The component of mud is different and change with sewage source, sewage work's treatment process and season, and the composition of mud differs greatly.The mud ejected from sewage work is generally made up of loose material, water ratio is higher, mud volume can reach the decades of times of solid volume contained by it, volume is very huge, character is very unstable, very easily degenerates, and is unfavorable for transport and disposes, therefore minimizing and harmless treatment need be carried out in time, make reduce containing pathogenic micro-organism, the corruption amount of material that gives out stench and make it degrade.
At present, mass-producing urban sewage sludge compost process gordian technique needs to be broken through, and lacks energy-conservation, the low consumption, efficiently mass-producing urban sewage sludge compost Integration ofTechnology that are applicable to China's national situation.Domesticly to be short of very much in the special research for urban sewage sludge compost technical elements, the mud quick biological drying technology particularly on industrialization level.The correlative study of laboratory level is difficult to apply in large-scale production.In the urgent need to carrying out Enterprises Universities Researches Union tackling key problem to urban sewage sludge compost process gordian technique in mass-producing level.For China's national situation, complete the sludge composting Integration ofTechnology on industrialization level.
Summary of the invention
For solving deficiency of the prior art, the invention provides a kind of municipal sludge efficient energy-saving quick biological drying method, reaching quick mummification, thorough kill harmful pathogeny bacterium, reach simultaneously and save energy object.
A kind of municipal sludge efficient energy-saving quick biological drying method, comprises the following steps:
1) cultivation of high-temperature strain;
2) centrifugal dewatering of sludge;
3) dehydrated sludge admixes high-temperature strain, fermentation, air seasoning.
The cultivation of described high-temperature strain, major ingredient is one or more in straw chaff, corn cob chaff or analysis for soybean powder, according to listed as parts by weight for being more than 95-98 part, auxiliary material is general calcium, wheat bran, urea, starch, glucose, sucrose, peptone, potassium primary phosphate and magnesium sulfate, described auxiliary material calculates as 2-5 part by weight, described major ingredient and auxiliary material and be 100 parts.
The breeding condition of described high-temperature strain is: moisture content is at 50-60%, and natural ventilation, temperature is not higher than 37 DEG C, and formed yellow or beige bacterial classification carrier through 30 day time, the cultivation time is 1 month, and the finished product bacterial classification pack normal temperature after cultivation is preserved.
Described centrifuge dehydration makes sludge water content content not higher than 80%.
Described mud admixes high-temperature strain, and the bacterial classification amount of admixing is 1/1000 of heap body total amount.
During described air seasoning, the aeration structure of use is:
A kind of aeration structure, comprise gas blower 1, ventilation slot 2, ventilation supervisor 3 and secondary vent-pipe 4, described two ventilation slots 2 be arranged in parallel, are arranged at intervals with many vent-pipes 4 in ventilation slot 2, described time vent-pipe 4 is connected with gas blower 1 by ventilation supervisor 3, and described ventilation slot covers horizontal plank.
Preferably, two adjacent in ventilation slot 2 times vent-pipe 4 is connected with same gas blower 1 by ventilation supervisor 3, be communicated with by connective slot 5 between adjacent ventilation slot 2, in described connective slot 5, be provided with pipe connecting 6, connected by pipe connecting 6 between the secondary vent-pipe 4 in two ventilation slots 2.
Preferably, described time vent-pipe 4 connects two arms by Y-junction, and described arm extends to heap body 7 times, and arm both sides are equipped with air outlet, and the part of arm under heap body 7 is coated with horizontal plank.
Preferably, described gas blower is connected with frequency conversion equipment.
Preferably, described arm both sides 2cm arranges an air outlet, each bore dia 3mm.
beneficial effect
The method of the invention, utilizes microorganism by quick for municipal sludge mummification, accelerates mummification process, saves the energy.55 DEG C of pliotherm periods maintain 20 days, and 65 DEG C of pliotherm periods maintain 13 days, are conducive to the harmful pathogeny bacterium thoroughly killed in mud.Meanwhile, the method for the invention makes drying process obtain mass-producing in conjunction with the use of described equipment.
Accompanying drawing explanation
Fig. 1 aeration structure schematic diagram of the present invention;
Fig. 2 sludge water-cut variation curve is shown in figure.
Embodiment
A method for the quick mummification of municipal sludge efficient energy-saving, comprises the following steps:
1) cultivation of high-temperature strain;
2) centrifugal dewatering of sludge;
3) dehydrated sludge admixes high-temperature strain, air seasoning.
The cultivation of described high-temperature strain, major ingredient is one or more in straw chaff, corn cob chaff or analysis for soybean powder, according to listed as parts by weight for being more than 95-98 part, auxiliary material is general calcium, wheat bran, urea, starch, glucose, sucrose, peptone, potassium primary phosphate and magnesium sulfate, described auxiliary material calculates as 2-5 part by weight, described major ingredient and auxiliary material and be 100 parts.
The breeding condition of described high-temperature strain is: moisture content is at 50-60%, and natural ventilation, temperature is not higher than 37 DEG C, and formed yellow or beige bacterial classification carrier through 30 day time, the cultivation time is 1 month, and the finished product bacterial classification pack normal temperature after cultivation is preserved.
Bacillus is the bacterial classification that known discovery possesses multifrequency nature and several functions most, and its characteristic is mainly manifested in: fast, metabolism is fast with breeding in breeding, 4 hours propagation 100,000 times, and standard bacteria only can breed 6 times in 4 hours; Vitality is strong, can be low temperature resistant-60 DEG C without wet condition, high temperature resistant 280 DEG C, resistance to strong acid, resistance to highly basic, antibiotic and sterilizing, resistance to hyperoxia (addicted to oxygen breeding), lower oxygen concentration resistance (anaerobism breeding); Volume is large, and larger than general pathogeny bacterium molecule 4 times, take up space advantage, suppresses the growth and breeding of harmful bacteria.Functionally, genus bacillus moisture retention is strong, and the natural materials forming intensity very excellent gathers Vetsin, is the protective membrane of soil, prevents fertile part and moisture loss; Organic matter decomposition power is strong, while propagation, highly active amylase can be disengaged, the macromolecular substance that difficulty is decomposed is resolved into available small-molecule substance, produce abundant metabolism resultant, synthesize material and other multiple nutrients be easily utilized such as multiple organic acid, enzyme, physiologically active; Simultaneously antibacterial, harmful power of going out strong, has the advantage of taking up space, and suppresses the growth and breeding of the harmful microbe such as harmful bacteria, pathogenic bacteria.Finally also possess deodorization functions, the organic substance, organic sulfide, organonitrogen etc. that produce foul gas can be decomposed, greatly improve the environment in place.
Therefore, obtained described high-temperature strain is carried out to the detection of genus bacillus, detected result is living bacteria count is 6.9*10-3 hundred million/g, and described sporeformer forms primarily of containing yeast, genus bacillus (2 kinds), filamentous fungus (mould) and high temperature resistant actinomycetes 5 kinds of main bacteria seed.
During the fermentation, under stuffy condition, temperature is more than 60 DEG C, the highest 62 DEG C, and under ventilation condition, temperature is more than 70 DEG C, the highest more than 75 DEG C, and this is conducive to quick biological drying process.
Described centrifuge dehydration makes sludge water content content not higher than 80%.
Described mud admixes high-temperature strain, and the bacterial classification amount of admixing is 1/1000 of heap body total amount.
During described air seasoning, the aeration structure of use is:
A kind of aeration structure, comprise gas blower (1), ventilation slot (2), ventilate supervisor (3) and time vent-pipe (4), described two ventilation slots (2) be arranged in parallel, many vent-pipes (4) are arranged at intervals with in ventilation slot (2), described time vent-pipe (4) is connected with gas blower (1) by supervisor (3) of ventilating, and described ventilation slot covers horizontal plank; Two adjacent in ventilation slot (2) times vent-pipe (4) is connected with same gas blower (1) by supervisor (3) of ventilating, be communicated with by connective slot (5) between adjacent ventilation slot (2), be provided with pipe connecting (6) in described connective slot (5), connected by pipe connecting (6) between the secondary vent-pipe (4) in two ventilation slots (2); Described time vent-pipe (4) connects two arms by Y-junction, and under described arm extends to heap body, arm both sides are equipped with air outlet, and the part of arm under heap body is coated with horizontal plank.
Concrete test.Test mud takes from the dewatered sludge of Guangzhou dan well sewage work, this factory is positioned at Shi Jing town, Baiyun District, adopt AAO active sludge treatment process, treatment scale 100,000 tons of sewage every day, excess sludge produces the dewatered sludge 50 tons of water ratio 75-80% every day after centrifuge dehydration, be divided into 6 to pile body, the physico-chemical property of mud sample is in table 1, and 6 heap body compositions are in table 2.
The physico-chemical property of mud sample tested by table 1
Table 26 testing program
As shown in Figure 1, in selection area, dig two ventilation slots 2 to original hardened ground, described ventilation slot 2 forms 2 vent lines of the long 40m of the wide 1m of spacing, and described ventilation slot 2 groove width 10cm, dark 12cm, arrange the secondary vent-pipe 4 of diameter 8cm in it; Described time vent-pipe 4 is connected with gas blower 1 by ventilation supervisor 3, described ventilation slot covers horizontal plank, there is gap between horizontal plank and ventilation slot; Two adjacent in ventilation slot 2 times vent-pipe 4 is connected with same gas blower 1 by ventilation supervisor 3, be communicated with by connective slot 5 between adjacent ventilation slot 2, be provided with pipe connecting 6 in described connective slot 5, connected by pipe connecting 6 between the secondary vent-pipe 4 in two ventilation slots 2; Described time vent-pipe 4 connects two arms by Y-junction, and under described arm extends to heap body, arm both sides are equipped with air outlet, and the part of arm under heap body is coated with horizontal plank, and flowing gas blows out from the gap of plank.Ventilation system configures 1 frequency transformer, 3 gas blowers.For meeting the pressure needs of sludge body, select every platform blower power 3kw, its maximum suction blast 280mbar, maximum exhaust pressure 280mbar, Maximum Ventilatory Volume is 265m3/hr, and therefore the Maximum Ventilatory Volume of compost body is 0.265m
3/ m
3min.Perform according to " the sludge from wastewater treatment plant method of inspection " (People's Republic of China's city-building industry standard, CJ/T221-2005) standard method.
Testing index, mensuration frequency, sampling and measuring method are specific as follows:
Every morning 11 gets the sample piling surface layer 10cm place, experimental determination moisture in composting plant, and method adopts oven-dry weight method.
Conclusion: good water content and ventilation facilitate piles microbial growth in body, organic substance decomposing, heavy metal passivation.In heap body, the change of moisture content is produced by the biological metabolism of microorganism on the one hand increases water ratio, and another aspect is ventilated by aerobic compost and high temperature scatters and disappears with vapor form; The acting in conjunction of these two aspects result in the change of heap body water ratio.Sludge composting water-cut variation curve is shown in Fig. 2.
From Fig. 2 sludge composting water-cut variation curve, compost is when piling body and building into, and the water ratio of each heap body is all between 60%-65%, and now water ratio is the highest for heap body; Along with the process of compost, the water ratio of heap body reduces gradually, and the 11st day time, 5# and 6# piles body water ratio and be down to less than 40%, and the 30th day time, heap body 1#, 2#, 3#, 4#, 5#, 6# are reduced to 55%, 51%, 44%, 31%, 28%, 30% respectively.Heap body 5#, 6# water ratio underspeeds soon, and compost effect is better, achieves the quick mummification of material, is conducive to accelerating aerobic compost process, material quick composting.
To sum up, the method for the invention achieves the quick mummification of material, saves the energy.55 DEG C of pliotherm periods maintain 20 days, and 65 DEG C of pliotherm periods maintain 13 days, are conducive to the harmful pathogeny bacterium thoroughly killed in mud.Meanwhile, the method for the invention makes drying process obtain mass-producing in conjunction with the use of described aeration structure.
Claims (7)
1. a method for the quick mummification of municipal sludge efficient energy-saving, comprises the following steps:
1) cultivation of high-temperature strain; 2) centrifugal dewatering of sludge; 3) dehydrated sludge admixes high-temperature strain; fermentation; air seasoning; it is characterized in that: the cultivation of described step 1) high-temperature strain; major ingredient is one or more in straw chaff, corn cob chaff or analysis for soybean powder, is 95-98 part according to listed as parts by weight, and auxiliary material is general calcium, wheat bran, urea, starch, glucose, sucrose, peptone, potassium primary phosphate and magnesium sulfate; described auxiliary material calculates as 2-5 part by weight, described major ingredient and auxiliary material and be 100 parts; The breeding condition of described step 1) high-temperature strain is: during cultivation, moisture content remains on 50-60%, natural ventilation, temperature, not higher than 37 DEG C, formed yellow or beige bacterial classification carrier through 30 day time, the cultivation time is 1 month, and the finished product bacterial classification pack normal temperature after cultivation is preserved.
2. the quick drying method of a kind of municipal sludge efficient energy-saving as claimed in claim 1, is characterized in that: described step 2) centrifuge dehydration makes sludge water content content not higher than 80%.
3. the quick drying method of a kind of municipal sludge efficient energy-saving as claimed in claim 1, it is characterized in that: in step 3), described mud admixes high-temperature strain, and the bacterial classification amount of admixing is 1/1000 of heap body total amount.
4. the aeration structure that adopts of the quick drying method of the arbitrary described municipal sludge efficient energy-saving of claim 1-3, it is characterized in that: aeration structure comprises gas blower (1), ventilation slot (2), ventilate supervisor (3) and time vent-pipe (4), described two ventilation slots (2) be arranged in parallel, many vent-pipes (4) are arranged at intervals with in ventilation slot (2), described time vent-pipe (4) is connected with gas blower (1) by supervisor (3) of ventilating, and described ventilation slot (2) is upper covers horizontal plank.
5. aeration structure as claimed in claim 4, it is characterized in that: two adjacent in ventilation slot (2) times vent-pipe (4) is connected with same gas blower (1) by supervisor (3) of ventilating, be communicated with by connective slot (5) between adjacent ventilation slot (2), pipe connecting (6) is provided with in described connective slot (5), connective slot (5) is upper covers horizontal plank, is connected between the secondary vent-pipe (4) in two ventilation slots (2) by pipe connecting (5).
6. the aeration structure as described in claim 4 or 5, it is characterized in that: described time vent-pipe (4) connects two arms by Y-junction, under described arm extends to heap body (7), arm both sides are equipped with air outlet, and the part of arm under heap body (7) is coated with horizontal plank.
7. aeration structure as claimed in claim 6, is characterized in that: described gas blower (1) is connected with frequency conversion equipment.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106008106A (en) * | 2016-05-27 | 2016-10-12 | 兰州交通大学 | Sludge-based charcoal loessal soil conditioner and preparation method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6150596B2 (en) * | 1984-05-01 | 1986-11-05 | Yasuyuki Hayano | |
| CN101134687A (en) * | 2007-07-18 | 2008-03-05 | 刘永定 | Ground pit type high-heat aerobic organisms fermentation odour remover and method for degradation of organic effluvial waste dump fertilizer |
| CN101333510A (en) * | 2008-08-05 | 2008-12-31 | 海南农丰宝肥料有限公司 | Method for processing sludge and preparing bio organic fertilizer and special leaven thereof |
| CN102153388A (en) * | 2010-12-03 | 2011-08-17 | 深圳市如茵生态环境建设有限公司 | Circulating sludge biological fermentation tank, processing system and processing method |
| CN102372404A (en) * | 2011-09-28 | 2012-03-14 | 浙江省环境保护科学设计研究院 | Bio-augmentation treatment sludge in-situ reduction method |
| CN102381822A (en) * | 2011-07-18 | 2012-03-21 | 刘建伦 | Multi-strain compound microbial high-temperature rapid-digestion sludge harmless treatment method |
| CN102786200A (en) * | 2012-08-29 | 2012-11-21 | 天津科技大学 | Biological sludge drying method |
| CN103043880A (en) * | 2012-12-18 | 2013-04-17 | 陕西宣和通科技发展有限责任公司 | Biological drying method for sludge |
| CN103910476A (en) * | 2014-03-25 | 2014-07-09 | 山东省科学院能源研究所 | Municipal dewatered sludge accessory-free bio-drying method on basis of sodium hydroxide pretreatment |
| CN104529112A (en) * | 2014-11-28 | 2015-04-22 | 刘子腾 | Sludge bio-drying treatment technology |
-
2015
- 2015-09-14 CN CN201510582971.6A patent/CN105217912B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6150596B2 (en) * | 1984-05-01 | 1986-11-05 | Yasuyuki Hayano | |
| CN101134687A (en) * | 2007-07-18 | 2008-03-05 | 刘永定 | Ground pit type high-heat aerobic organisms fermentation odour remover and method for degradation of organic effluvial waste dump fertilizer |
| CN101333510A (en) * | 2008-08-05 | 2008-12-31 | 海南农丰宝肥料有限公司 | Method for processing sludge and preparing bio organic fertilizer and special leaven thereof |
| CN102153388A (en) * | 2010-12-03 | 2011-08-17 | 深圳市如茵生态环境建设有限公司 | Circulating sludge biological fermentation tank, processing system and processing method |
| CN102381822A (en) * | 2011-07-18 | 2012-03-21 | 刘建伦 | Multi-strain compound microbial high-temperature rapid-digestion sludge harmless treatment method |
| CN102372404A (en) * | 2011-09-28 | 2012-03-14 | 浙江省环境保护科学设计研究院 | Bio-augmentation treatment sludge in-situ reduction method |
| CN102786200A (en) * | 2012-08-29 | 2012-11-21 | 天津科技大学 | Biological sludge drying method |
| CN103043880A (en) * | 2012-12-18 | 2013-04-17 | 陕西宣和通科技发展有限责任公司 | Biological drying method for sludge |
| CN103910476A (en) * | 2014-03-25 | 2014-07-09 | 山东省科学院能源研究所 | Municipal dewatered sludge accessory-free bio-drying method on basis of sodium hydroxide pretreatment |
| CN104529112A (en) * | 2014-11-28 | 2015-04-22 | 刘子腾 | Sludge bio-drying treatment technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106008106A (en) * | 2016-05-27 | 2016-10-12 | 兰州交通大学 | Sludge-based charcoal loessal soil conditioner and preparation method thereof |
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