CN1654437A - Sludge aerobic and anaerobic alternated compost reactor - Google Patents
Sludge aerobic and anaerobic alternated compost reactor Download PDFInfo
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- CN1654437A CN1654437A CNA200510032644XA CN200510032644A CN1654437A CN 1654437 A CN1654437 A CN 1654437A CN A200510032644X A CNA200510032644X A CN A200510032644XA CN 200510032644 A CN200510032644 A CN 200510032644A CN 1654437 A CN1654437 A CN 1654437A
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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
Abstract
The alternately aerobic and anaerobic sludge composting reactor consists of composting reactor and automatic monolithic computer controlled oxygen supplying system. The present invention adopts temperature-time feedback system, and realizes automatic monolithic computer controlled blower oxygen supply to reach the optimal alternate aerobic and anaerobic state in compost, resulting in fast temperature raise inside the reactor, and making compost reach the relevant standard fast in organic carbon, volatile solid, volatile fatty acid, seed germination rate, etc.
Description
Technical field
The present invention relates to a kind of novel compost reactor, specifically is a kind of sludge aerobic and anaerobic alternated compost reactor.
Background technology
Composting technology generally is divided into aerobic compost and anaerobic composting.Sewage work produces a large amount of mud, and the treatment and disposal of mud and resource utilization are the current environmental issues that presses for solution, and exploitation sludge composting technology is significant.
The classification more complicated of organic castoff compost system.By having or not fermentation unit compositing system simply can be divided into open system and reactor assembly.The former can be divided into passive air duct slats again and pile up neatly formula system, bar buttress system, forced ventilation static buttress system.
1, open system
(1) passive air duct slats buttress formula compost
The passive type compost is that raw material is simply piled up, and makes the heap body carry out passive ventilation, through the process of long-time natural decomposition.Adopt this mode can not satisfy the condition of continuous aerobic compost.
(2) bar buttress system
The solid waste that mixes is piled bar buttress shape, under aerobic condition, decompose.Replenish requisite oxygen by artificial or mechanical stirring, turning.Bar buttress system is very high to site requirements, and Pavement Design requires similar to highway, and requires certain gradient, is furnished with water exhaust system, and scale also must suitably must be furnished with the staff of a great deal of.
Bar buttress system floor space is big, and decomposed period is long; Need a large amount of turning machinery and manpower; Be subject to ectocine, instability.
(3) forced ventilation static buttress system
Forced ventilation static buttress system is by blower fan and is embedded in the system that subterranean ventilator trunk carries out the forced ventilation oxygen supply that forced ventilation static buttress system has many good qualities: the investment of equipment is relatively low; Controlled temperature and ventilation situation better; The stability of product is better, and can more effectively kill pathogenic bacteria and control stink; Because control condition is better, the rotten time of forced ventilation static buttress system heap is shorter relatively, is generally for 2～3 weeks; Because the rotten time of heap is shorter relatively, the consumption of stopping composition is few, and floor space is also less relatively.The most important shortcoming of forced ventilation static buttress system is to be subject to the influence of weather condition.
2, reactor assembly
Reactor assembly also exists tangible unfavorable factor: at first be the investment of great number, comprise investment (design, manufacturing), working cost and the maintenance cost of composting arrangement; Because the compost cycle is shorter relatively, composting production has the potential unstable, and several days heap corruption is not enough to obtain a product stable, no stink, and the phase of becoming thoroughly decomposed behind the compost prolongs relatively; Composting process relies on special mechanical means fully, in case equipment goes wrong, composting process is promptly influenced.
Summary of the invention
The objective of the invention is to shortcoming, a kind of novel sludge aerobic and anaerobic alternated compost reactor is provided at the prior art existence.The present invention adopts temperature-time feedback system, has realized that micro-chip controls the gas blower oxygen supply automatically, makes the compost in the compost reactor reach aerobic/anaerobism alternative optimum regime.
The present invention reaches goal of the invention by the following technical programs:
Structural representation of the present invention as shown in Figure 1, sludge aerobic and anaerobic alternated compost reactor comprises the top cover 2 of coupling flange, the cylindrical shell 5 of coupling flange and the bottom 13 of coupling flange, is provided with sieve plate 6 between cylindrical shell 5 and bottom 13; Be provided with drain 1 on the top of top cover 2; Be provided with compost outlet 14 in the bottom of cylindrical shell 5, the side is provided with thief hatch 3 and 4; Be provided with leakage fluid dram 12 in the bottom of bottom 13.
As improvement of the technical scheme, the present invention also is provided with gas blower 9, and gas blower 9 links to each other with the ventilation opening 7 that is arranged on bottom 13 bottoms by sebific duct 8.
As further improvement in the technical proposal, the present invention also is provided with micro-chip 11, and an end of micro-chip 11 links to each other with gas blower 9 by rly. 10, and the other end then links to each other with cylindrical shell 5 by being located at cylindrical shell 5 lateral thermopairs 15,16 and 17.
Compared with the prior art, the present invention has following advantage:
The present invention adopts temperature-time feedback system, realized that micro-chip controls the gas blower oxygen supply automatically, make the compost in the compost reactor reach aerobic/anaerobism alternative optimum regime, make in the reactor heap temperature rise rapidly, indexs such as organic carbon, volatile solid, voltaile fatty acid, rate of emergence meet the agricultural national standard of mud (GB8172-87) in the compost, and compost quality meets innoxious hygienic standard (GB7959-87).
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of sieve plate of the present invention;
Fig. 3 is a micro-chip control loop diagram of the present invention;
Fig. 4 is the temperature-time feedback control logical diagram of micro-chip;
Fig. 5 is volatile solid and an organic acid variation synoptic diagram in the paper mill sludge composting process;
Fig. 6 is the variation synoptic diagram of voltaile fatty acid in the paper mill sludge composting process.
Embodiment
The invention will be further described below in conjunction with Figure of description, but the scope of protection of present invention is not limited to the described scope of embodiment.
Structural representation of the present invention as shown in Figure 1, sludge aerobic and anaerobic alternated compost reactor comprises the top cover 2 of coupling flange, the cylindrical shell 5 of coupling flange and the bottom 13 of coupling flange, is provided with sieve plate 6 between cylindrical shell 5 and bottom 13; Be provided with drain 1 on the top of top cover 2; Be provided with compost outlet 14 in the bottom of cylindrical shell 5, the side is provided with thief hatch 3 and 4; Be provided with leakage fluid dram 12 in the bottom of bottom 13.
As improvement of the technical scheme, the present invention also is provided with gas blower 9, and gas blower 9 links to each other with the ventilation opening 7 that is arranged on bottom 13 bottoms by sebific duct 8.
As further improvement in the technical proposal, the present invention also is provided with micro-chip 11, and an end of micro-chip 11 links to each other with gas blower 9 by rly. 10, and the other end then links to each other with cylindrical shell 5 by being located at cylindrical shell 5 lateral thermopairs 15,16 and 17.
Principle of work of the present invention is: the compost thing is packed into by top cover flange 2, after compost is finished, is poured out by compost outlet 14.In the composting process, thermocouple 15,16 and 17 Temperature Feedback that timely monitor is arrived arrive micro-chip 11, micro-chip is interrupted air blast according to 10 pairs of gas blowers of time variable control rly. 9 of setting, wind enters the cylindrical shell 5 that compost is housed by sieve plate 6, oxygen required in the composting process is provided, and accompanying drawing 2 is the structural representation of sieve plate.Stopping time air blast during gas blower, cause and be in aerobic, anoxic alternative state in the reactor, simultaneously, this forced ventilation of controlling automatically according to temperature has not only been optimized oxygen supply situation in the compost, and the state of aerobic-anaerobic has promoted that also organism fully decomposes, and heap temperature is risen rapidly, finish compost at short notice, meet relevant criterion.
Temperature control mechanism of the present invention is: as Fig. 1, and by the reactor head charging, the outlet of bottom windrow.The temperature that the inner difference of three thermocouple 15,16 and 17 monitoring reaction devices is arranged from top to bottom, thermocouple 16 corresponding controlled temperature point T (60 ℃) wherein, thermocouple 17 corresponding temperature reference mark T0 (55 ℃), when the temperature that feeds back to when thermocouple 16 is higher than 60 ℃, micro-chip will be controlled gas blower and not stop air blast, allow the heap body lower the temperature, when the temperature that feeds back to until thermocouple 17 is lower than 55 ℃, just turn off the blast, recover initial time state of a control, the micro-chip control loop diagram as shown in Figure 3, its logic control chart is seen accompanying drawing 4.
Sampling point also has three from top to bottom, is respectively thief hole 3,4 and compost outlet 14.Drain 1 is in order to prevent to occur in the air blast process situation of negative pressure, to adjust the pressure equilibrium of inside reactor.12 of leakage fluid drams are in order to receive issuable filtrate in the composting process.
The effect experiment
Accompanying drawing 5 is volatile solid and an organic acid variation synoptic diagram in the paper mill sludge composting process; The initial volatile solid content (61.31%) of this experiment paper mill sludge is on the low side, and material best and that volatile solid content is high is united compost.In the temperature rise period of compost, volatile solid presents violent downtrending, a Schwellenwert occurs at hot stage, and this reflects and grow a large amount of microorganisms in the compost that organism is utilized by microbiological degradation.But because the high temperature period is shorter, so volatile solid only drops to 59.6%.Along with the carrying out of composting process, volatile solid is on a declining curve in the compost.It has been generally acknowledged that to drop to a relatively stable value be compost near an important symbol of becoming thoroughly decomposed to its volatile solid content in the composting process.
Fig. 6 is the variation synoptic diagram of voltaile fatty acid in the paper mill sludge composting process.Voltaile fatty acid is the intermediate product of carbohydrate such as microbiological degradation carbohydrate.From the variation of composting process voltaile fatty acid as can be seen, at the compost initial stage, because the metabolism of microorganism, produce lot of organic acids, the volatile acids content of material is risen, be raised to the highest 1.66mg-N/l behind the high temperature, increased similar 8 times from initial 0.22mg-N/l.And along with the raising of organic acid concentration, the pH value of sludge composting descends, and along with the reduction of temperature, high value occurs at the 6th day then, the corresponding low spot that occurs of pH value then, and this result of study to the civilian river of fourth is similar.Voltaile fatty acid is easy to be utilized by microorganism, and the carrying out along with the composting reaction, organism is fewer and feweri, and the volatile fat acid content is on a declining curve.
Paper mill sludge was through about 70 days compost, and the quality of its product that becomes thoroughly decomposed and hygiology index are as shown in table 1, and by table 1 as seen: compost can effectively be killed the pathogenic bacteria (in intestinal bacteria) in the mud, reaches state health standards; On apparent, matured compost short texture, no stink, look same black earth; Realize sewage sludge harmlessness, stabilization and minimizing processing, the agricultural theoretical foundation that provides of paper mill sludge compost is provided.
Table 1
| ??pH | ??MC | ??NH3 | ??NO3 | ??TN | ??VFA | ??TP | ??OC | Thick oil | Half is fine | Fine | Wood |
| Fat (%) | Dimension is plain | Dimension is plain | Plain | ||||||||
| ??6.57 | ??43.58 | ??152.77 | ??263.16 | ??0.33 | ??1.2032 | ??0.16 | ??30.37 | ??11.68 | ?2.78 | ?3.88 | ?23.77 |
| 23/100ml of intestinal bacteria | Percentage of germination 95% | ||||||||||
Claims (3)
1, sludge aerobic and anaerobic alternated compost reactor comprises the top cover (2) of coupling flange, the cylindrical shell (5) of coupling flange and the bottom (13) of coupling flange, it is characterized in that being provided with sieve plate (6) between cylindrical shell (5) and bottom (13); Be provided with drain (1) on the top of top cover (2); Be provided with compost outlet (14) in the bottom of cylindrical shell (5), the side is provided with thief hatch (3) and (4); Be provided with leakage fluid dram (12) in the bottom of bottom (13).
2, sludge aerobic and anaerobic alternated compost reactor according to claim 1 is characterized in that also being provided with gas blower (9), and gas blower (9) links to each other with the ventilation opening (7) that is arranged on bottom (13) bottom by sebific duct (8).
3, sludge aerobic and anaerobic alternated compost reactor according to claim 2, it is characterized in that also being provided with micro-chip (11), one end of micro-chip (11) links to each other with gas blower (9) by rly. (10), the other end then by be located at the lateral thermopair of cylindrical shell (5) (15), (16) reach (17) and link to each other with cylindrical shell (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510032644XA CN100546947C (en) | 2005-01-04 | 2005-01-04 | Sludge aerobic and anaerobic alternated compost reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510032644XA CN100546947C (en) | 2005-01-04 | 2005-01-04 | Sludge aerobic and anaerobic alternated compost reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1654437A true CN1654437A (en) | 2005-08-17 |
| CN100546947C CN100546947C (en) | 2009-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510032644XA Expired - Fee Related CN100546947C (en) | 2005-01-04 | 2005-01-04 | Sludge aerobic and anaerobic alternated compost reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250070B (en) * | 2007-12-19 | 2012-05-09 | 华南理工大学 | Sludge and organic garbage hybrid composting process control method and system thereof |
| CN105110590A (en) * | 2015-09-17 | 2015-12-02 | 昆明滇池水务股份有限公司 | Method and device for intensifying high-temperature hydrolysis acidification of excess sludge from sewage treatment plant through aeration |
-
2005
- 2005-01-04 CN CNB200510032644XA patent/CN100546947C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250070B (en) * | 2007-12-19 | 2012-05-09 | 华南理工大学 | Sludge and organic garbage hybrid composting process control method and system thereof |
| CN105110590A (en) * | 2015-09-17 | 2015-12-02 | 昆明滇池水务股份有限公司 | Method and device for intensifying high-temperature hydrolysis acidification of excess sludge from sewage treatment plant through aeration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100546947C (en) | 2009-10-07 |
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Granted publication date: 20091007 Termination date: 20120104 |