CN110183079A - A kind of Sludge aerobic fermentation treatment method - Google Patents
A kind of Sludge aerobic fermentation treatment method Download PDFInfo
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- CN110183079A CN110183079A CN201910501264.8A CN201910501264A CN110183079A CN 110183079 A CN110183079 A CN 110183079A CN 201910501264 A CN201910501264 A CN 201910501264A CN 110183079 A CN110183079 A CN 110183079A
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- Prior art keywords
- sludge
- fermentation
- aerobic fermentation
- powder
- treatment method
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F5/00—Fertilisers from distillery wastes, molasses, vinasses, sugar plant or similar wastes or residues, e.g. from waste originating from industrial processing of raw material of agricultural origin or derived products thereof
- C05F5/002—Solid waste from mechanical processing of material, e.g. seed coats, olive pits, almond shells, fruit residue, rice hulls
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Abstract
A kind of Sludge aerobic fermentation treatment method, comprising the following steps: (1) be crushed sieving；(2) mixed with fermentation ingredient powder；(3) microwave inactivation；(4) aerobic fermentation.The present invention adds to be inactivated in the sludge powder feeding microwave inactivation machine after fermenting auxiliary material, >=90% included harmful microorganism is killed in mixed material, improve the efficiency of fermentative microorganism, it is low for equipment requirements, fermentation period is short, fermenting, stink is few, and processing cost is low, solves the problems such as fermentation period during aerobic fermentation is long, smelly large-minded；Farm production waste is preferably by as fermentation auxiliary material, is turned waste into wealth.
Description
Technical field
The present invention relates to sludge aerobic fermentation technical fields, and in particular to a kind of Sludge aerobic fermentation treatment method.
Background technique
City size expands and population increases so that municipal sewage amount is continuously increased, the residue generated in sewage disposal process
Sludge quantity also increases sharply therewith, how effectively to carry out the important link that processing disposition is current environment protection to excess sludge.It is surplus
How the problems such as that there are yield is big for remaining sludge, moisture content is high, volume is big, is not easy to be dehydrated, effectively reach minimizing, the stabilization of sludge
Change, innoxious and recycling purpose, is the Important Problems in current specific resistance to filtration.
Sludge aerobic fermentation is one of main method of specific resistance to filtration, can kill in sludge most of pathogen and
Helminth can also eliminate the stink of itself, be a kind of simple and effective sludge stabilizing, harmless treat, pass through aerobic hair
The sludge product of ferment processing, can be applied to afforestation, soil improvement etc., achievees the purpose that recycling sludge utilizes.But at present
There is also many problems for sludge aerobic zymotechnique, as fermentation period is long, take up a large area, the stink that ferments is big, tunning contains
Water rate is high, up-front investment is big, operating cost is high etc., and problem above directly constrains aerobic fermentation technology in sludge treatment and resource
Change the practical application during utilizing.
108341729 A of CN discloses a kind of sludge high temperature aerobic fermentation process, including step A: by sludge, auxiliary material, returning
Spike mixing, and the C/N of sludge ratio, moisture content are separately adjusted to angularly (25~35): 1 and 50%~60%；It will be after processing of step A
The mixture of formation is mixed with high-temperature aerobic fermentation composite bacteria agent to ferment；It is sieved through the clinker after step B fermentation
Point.This method is realized by intelligence control system to techniques such as material proportion, turn pile frequency, fermentation temperature, oxygen contents
The automatic control of parameter, it is seen that required equipment requirement is high, and up-front investment is big, operating cost is high, corresponding higher cost.
Summary of the invention
The technical problem to be solved by the present invention is to overcome drawbacks described above of the existing technology, provide a kind of pair of equipment
It is required that low, fermentation period is short, and fermentation stink is few, the preprocess method before the low sludge aerobic fermentation of processing cost.
The technical solution adopted by the present invention to solve the technical problems is as follows: a kind of Sludge aerobic fermentation treatment method, packet
Include following steps:
(1) sludge crushing: by dewatered sludge crushing, sieving obtains sludge powder；
(2) mixed with fermentation ingredient powder: by sludge powder obtained by step (1) and fermentation ingredient powder, to be uniformly mixed, obtain mixed material；
(3) microwave inactivation: mixed material is sent into microwave inactivation machine, under stirring, carry out microwave inactivation processing, obtain through
The mixed material of inactivation；
(4) aerobic fermentation: after the mixed material cooling through inactivating, addition fermenting agent carries out aerobic fermentation.
Further, in step (2), the mass ratio of the sludge powder and fermentation ingredient powder is 1: 0.25~0.35；PH is 5.5
~8.
Further, in step (2), the fermentation auxiliary material is dry feces of livestock and poultry, in mushroom residue, system chaff, sawdust, stalk
One or more mixtures；The fermentation ingredient powder is that the fermentation auxiliary material is crushed, be sieved gained powder.
Further, in step (1), the partial size of the sludge powder is 2~10mm.
Further, in step (2), the partial size of the sludge powder is 5~8mm.
Further, in step (2), the partial size of the fermentation ingredient powder is 5~20mm.
Further, in step (2), the partial size of the fermentation ingredient powder is 8~10mm.
Further, in step (3), when microwave treatment, 115~125 DEG C is risen to temperature, keeps constant temperature inactivation treatment 30
~40min.
Further, in step (3), the microwave frequency of the microwave treatment is 2.425~2.475GHz.
Further, in step (3), after the mixed material through inactivating is cooled to 40~50 DEG C, then add fermenting agent into
Row aerobic fermentation；The aerobic fermentation is static compost mode, item chops composting mode, trough composting mode and reactor compost side
One of formula.
The present invention, by adding a certain proportion of fermentation (biomass) auxiliary material in sludge, is sent into after sludge crushing micro-
It is inactivated in wave inactivation machine, in the sludge after inactivation >=90% included harmful microorganism removed, pass through above-mentioned pretreated sludge
It can utmostly guarantee the progress of subsequent aerobic fermentation technique；Preferred embodiment further controls the pH of mixed material, to mention
Organic matter carries out oxygenolysis speed to organic matter under the action of microorganism in high sludge, accelerates larger molecular organics in sludge
Conversion is degraded into the treatment process of small molecule humus, to convert the innoxious impurity such as inorganic salts for sludge.
Sludge powder (mixed material) after adding fermentation auxiliary material the invention has the advantages that: (1), which is sent into microwave inactivation machine, to go out
It is living, >=90% included harmful microorganism is killed in mixed material, the efficiency of fermentative microorganism is improved, low for equipment requirements, fermentation
Period is short, and fermentation stink is few, and processing cost is low, solves the problems such as fermentation period during aerobic fermentation is long, smelly large-minded；
(2) accelerate the organic matter degradation in sludge, it is preferred to use farm produces waste as fermentation auxiliary material, turns waste into wealth.
Specific embodiment
Below with reference to embodiment, the invention will be further described.
Sludge source in embodiment is in sewage treatment plant, Hunan Province using the research and development of Hunan grand brightness environmental protection Co., Ltd
" MCP microwave conditioning+diaphragm filters pressing deep dehydration technology " dewatered municipal sludge, " the MCP microwave conditioning+diaphragm filters pressing
Deep dehydration technology " sludge is cooperateed with by microwave irradiation device with liquid pharmaceutical it is quenched, make its generation " modification ", " broken wall ",
" demulsification " effect promotes the preservation structure of sludge contained humidity to change, most of wrap up or to be fettered and is difficult to mechanical de-
The combination water removed transforms into Free water, opens simultaneously sludge filtering aquaporin, it can be realized by disposable machine uniformly filters pressing
The target of deeply dehydrating sludge to aqueous 50% meets the requirement that urban sewage treatment plant sludge handles related shale.
Embodiment 1
Specific step is as follows for the present embodiment:
(1) sludge crushing: crushing crusher machine through chain type for sludge cake after deep dehydration, and sludge powder diameter is 5mm after being crushed；
(2) mixed with fermentation auxiliary material: respectively to account for 50% preparation fermentation auxiliary material with mushroom residue and system chaff, be crushed to partial size in 10mm；Sludge
Powder is be uniformly mixed at 1: 0.3 with fermentation auxiliary material in mass ratio, obtains mixed material, and the C/N ratio of mixed material is 20: 1, moisture content
45%, 5.5 pH；
(3) microwave inactivation: mixed material is delivered in the sludge microwave inactivation machine of microwave frequency 2.425GHz through belt, starting
Equipment opens agitating device in microwave and machine simultaneously, rises to 115 DEG C to temperature, keeps constant temperature inactivation treatment 30min；
(4) aerobic fermentation: cooling to material by the mixed material through microwave inactivation through discharge port by belt-conveying to fermentation zone
To 40 DEG C or so addition fermenting agents, static compost mode carries out aerobic fermentation.
Embodiment 2
Specific step is as follows for the present embodiment:
(1) sludge crushing: crushing crusher machine through chain type for sludge cake after deep dehydration, and sludge powder diameter is 5mm after being crushed；
(2) mixed with fermentation auxiliary material: respectively to account for 50% preparation fermentation auxiliary material with mushroom residue and system chaff, be crushed to partial size in 15mm；Sludge
Powder is be uniformly mixed at 1: 0.25 with fermentation auxiliary material in mass ratio, obtains mixed material, and the C/N ratio of mixed material is 25: 1, moisture content
For 50%, pH 6.5；
(3) microwave inactivation: mixed material is delivered in the sludge microwave inactivation machine of microwave frequency 2.420GHz through belt, starting
Equipment opens agitating device in microwave and machine simultaneously, rises to 120 DEG C to temperature, keeps constant temperature inactivation treatment 35min；
(4) aerobic fermentation: cooling to material by the mixed material through microwave inactivation through discharge port by belt-conveying to fermentation zone
To 45 DEG C or so addition fermenting agents, item chops composting mode and carries out aerobic fermentation.
Embodiment 3
Specific step is as follows for the present embodiment:
(1) sludge crushing: crushing crusher machine through chain type for sludge cake after deep dehydration, and sludge powder diameter is 5mm after being crushed；
(2) mixed with fermentation auxiliary material: respectively to account for 50% preparation fermentation auxiliary material with mushroom residue and system chaff, be crushed to partial size in 20mm；Sludge
Powder is be uniformly mixed at 1: 0.28 with fermentation auxiliary material in mass ratio, obtains mixed material, and the C/N ratio of mixed material is 30: 1, moisture content
For 55%, pH 8.0；
(3) microwave inactivation: mixed material is delivered in the sludge microwave inactivation machine of microwave frequency 2.475GHz through belt, starting
Equipment opens agitating device in microwave and machine simultaneously, rises to 125 DEG C to temperature, keeps constant temperature inactivation treatment 40min；
(4) aerobic fermentation: cooling to material by the mixed material through microwave inactivation through discharge port by belt-conveying to fermentation zone
To 50 DEG C or so addition fermenting agents, trough composting mode carries out aerobic fermentation.
The effect that Examples 1 to 3 sludge aerobic fermentation process influences sludge aerobic fermentation period after implementing.
1, test material:
Material: sludge, mushroom residue, system chaff, the technical indicator and pollutant limit value index of material to be tested sludge are shown in Table 1.
Test site: it is located at the grand brightness environmental protection in Hunan Co., Ltd star sand sludge of sewage treatment plant and handles treatment workshop
It is interior.
2, experimental method:
(1) difference of the pretreated mixed material of Examples 1 to 3, comparative example 1 and embodiment 1 is only that in step (2) and is not added
The auxiliary material that ferments carries out mixture.The difference of comparative example 2 and embodiment 2 is only that the mixed material of non-microwave treatment in step (3).
The difference of comparative example 3 and embodiment 3 is only that in step (2) be in mass ratio 1: 0.4, the C/N ratio of mixed material
For 35:1, moisture content 60%, pH 9；The mixed material of non-microwave treatment in subsequent step (3).
(2) totally 6 processing, every processing set 3 repetitions, every processing for experimental setup Examples 1 to 3 and comparative example 1~3
500kg, fermenting microbe additive amount are 2% parts by weight, and strain is uniformly mixed with material, between every morning 9:00~11:00,
Fermentation temperature is detected between afternoon 14:00~16:00, record saves, the turning when material center temperature is more than 60 DEG C, material temperature
Degree is down to 40 DEG C hereinafter, every turning in 2 days is primary, to fermentation materials color browning color or dark brown, while temperature be down to 35 DEG C with
Under, complete first fermentation.
(3) index determining, routine observation is respectively handled during experiment carry out situation are simultaneously recorded, are counted after completing first fermentation
Fermentation period time, moisture content, excrement colibacillus group number, induced worm egg death rate (data are shown in Table 2).
1 material to be tested technical indicator of table and pollutant limit value index
As can be known from Table 1, the content's index of material to be tested Heavy Metals in Sludge arsenic, mercury, lead, cadmium, chromium meets " GBT 23486-
2009 urban sewage treatment plant sludges disposition afforestation shale ", " GBT 24600-2009 urban wastewater treatment firm is dirty
Mud disposition betterment of land shale ", " CJT 309-2009 urban sewage treatment plant sludge disposes agricultural shale ", " CJT
The requirement of 362-2009 urban sewage treatment plant sludge disposition forest land shale ", realizes the purpose that recycling sludge utilizes.
Table 2 respectively handles item detection index after first fermentation
From Table 2, it can be seen that the fermentation period of Examples 1 to 3 is at 7~8 days, and the fermentation period of comparative example 1~3 needs 16
~17 days, in specific operation process, fermentation temperature reached 65 DEG C or more at second day in embodiment, reached as high as 75 DEG C, high temperature
Phase maintains 4~5 days, and during which water evaporation quantity is big, shortens fermentation time rapidly；And comparative example temperature rises slow, third talent
Reach the fermentation megathermal period, the megathermal period maintains 8~10 days, and 65 DEG C of maximum temperature, moisture loss is slower, and fermentation period is long.It compares
During compared with comparative example, embodiment is pre-processed through microwave high-temperature, and included harmful microorganism is killed substantially, and embodiment is fermented
Maximum temperature is apparently higher than comparative example, therefore well below comparative example, induced worm egg death rate is higher than pair coliform group count in embodiment
Ratio.
The above embodiments are merely illustrative of the technical solutions of the present invention, without limiting it, although referring to above-described embodiment
It describes the invention in detail, those skilled in the art should understand that, it still can be to the various embodiments described above
Documented technical solution is modified or equivalent replacement of some of the technical features, and these modifications or substitutions,
Depart from the spirit and scope of the technical scheme of various embodiments of the present invention corresponding technical solution essence.
Claims (10)
1. a kind of Sludge aerobic fermentation treatment method, which comprises the following steps:
(1) sludge crushing: by dewatered sludge crushing, sieving obtains sludge powder；
(2) mixed with fermentation ingredient powder: by sludge powder obtained by step (1) and fermentation ingredient powder, to be uniformly mixed, obtain mixed material；
(3) microwave inactivation: mixed material is sent into microwave inactivation machine, under stirring, carry out microwave inactivation processing, obtain through
The mixed material of inactivation；
(4) aerobic fermentation: after the mixed material cooling through inactivating, addition fermenting agent carries out aerobic fermentation.
2. Sludge aerobic fermentation treatment method according to claim 1, which is characterized in that in step (2), the sludge powder with
The mass ratio of fermentation ingredient powder is 1: 0.25~0.35；PH is 5.5~8.
3. Sludge aerobic fermentation treatment method according to claim 1 or claim 2, which is characterized in that in step (2), the fermentation
Auxiliary material is one of dry feces of livestock and poultry, mushroom residue, system chaff, sawdust, stalk or a variety of mixtures；The fermentation ingredient powder
It is crushed for the fermentation auxiliary material, be sieved gained powder.
4. Sludge aerobic fermentation treatment method described according to claim 1~one of 3, which is characterized in that described in step (1)
The partial size of sludge powder is 2~10mm.
5. Sludge aerobic fermentation treatment method according to claim 4, which is characterized in that in step (2), the sludge powder
Partial size is 5~8mm.
6. Sludge aerobic fermentation treatment method described according to claim 1~one of 5, which is characterized in that described in step (2)
The partial size of fermentation ingredient powder is 5~20mm.
7. Sludge aerobic fermentation treatment method according to claim 6, which is characterized in that in step (2), the fermentation auxiliary material
The partial size of powder is 8~10mm.
8. Sludge aerobic fermentation treatment method described according to claim 1~one of 7, which is characterized in that in step (3), microwave
When processing, 115~125 DEG C are risen to temperature, keeps 30~40min of constant temperature inactivation treatment.
9. Sludge aerobic fermentation treatment method described according to claim 1~one of 8, which is characterized in that described in step (3)
The microwave frequency of microwave treatment is 2.425~2.475GHz.
10. Sludge aerobic fermentation treatment method described according to claim 1~one of 9, which is characterized in that, will be through in step (3)
After the mixed material of inactivation is cooled to 40~50 DEG C, then adds fermenting agent and carry out aerobic fermentation；The aerobic fermentation is static state
Composting mode, item chop one of composting mode, trough composting mode and reactor composting mode.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112745152A (en) * | 2020-12-21 | 2021-05-04 | 长沙理工大学 | Synchronous recycling method for algae sludge salvaged in water body and aerobic composting of desilting bottom sludge |
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| CN1762863A (en) * | 2004-10-20 | 2006-04-26 | 吴为中 | Sludge drying and resource disposal process |
| CN101618977A (en) * | 2008-07-03 | 2010-01-06 | 城市污染控制国家工程研究中心 | High-temperature aerobic fermentation process for sludge with low energy consumption and no pollution |
| CN101704688A (en) * | 2009-11-09 | 2010-05-12 | 甘肃宇洋生物科技有限公司 | Method for producing solid biofertilizer from potato fermentation residue |
| CN108341729A (en) * | 2018-02-11 | 2018-07-31 | 上海尚泥环境科技有限公司 | A kind of sludge high temperature aerobic fermentation process |
-
2019
- 2019-06-11 CN CN201910501264.8A patent/CN110183079A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| CN1762863A (en) * | 2004-10-20 | 2006-04-26 | 吴为中 | Sludge drying and resource disposal process |
| CN101618977A (en) * | 2008-07-03 | 2010-01-06 | 城市污染控制国家工程研究中心 | High-temperature aerobic fermentation process for sludge with low energy consumption and no pollution |
| CN101704688A (en) * | 2009-11-09 | 2010-05-12 | 甘肃宇洋生物科技有限公司 | Method for producing solid biofertilizer from potato fermentation residue |
| CN108341729A (en) * | 2018-02-11 | 2018-07-31 | 上海尚泥环境科技有限公司 | A kind of sludge high temperature aerobic fermentation process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112745152A (en) * | 2020-12-21 | 2021-05-04 | 长沙理工大学 | Synchronous recycling method for algae sludge salvaged in water body and aerobic composting of desilting bottom sludge |
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