CN101746936B - Method for treating sludge in large scale by utilizing earthworm - Google Patents
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- CN101746936B CN101746936B CN2010101060641A CN201010106064A CN101746936B CN 101746936 B CN101746936 B CN 101746936B CN 2010101060641 A CN2010101060641 A CN 2010101060641A CN 201010106064 A CN201010106064 A CN 201010106064A CN 101746936 B CN101746936 B CN 101746936B
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Abstract
The invention relates to a method for treating sludge in large scale by utilizing earthworm, including three stages of cultivation of soil micro organisms, cultivation of specific organism seed applicable to sludge treatment and sludge treatment by utilizing the specific organism seed. The method for treating municipal domestic sewage treatment plant sludge in large scale by utilizing earthworm of the invention has the advantages of low investment, simple operation and wide region applicability, the volume of sludge through the treatment of the invention can be reduced to one sixth of the original volume, and product after treatment (earthworm excretion) has stable physical and chemical properties, accords with organic fertilizer application standard, can be widely applied in the fields of soil improvement (such as saline-alkali soil reformation), urban landscaping, animals and plants cultivation and the like, can obtain respectable economic benefit and can realize resource recycling. Thus, the method is feasible in application of sludge treatment and can realize harmlessness, reduction and recycling of sludge treatment.
Description
Technical field
The present invention relates to method for sludge treatment, especially relate to a kind of method of utilizing the earthworm treating sludge in large scale.
Background technology
The municipal sludge problem is that the process that is accompanied by the city of the worldization produces, and the total amount of the annual mud generation of China at present reaches 9,000,000 tons, and the standardization disposal rate of sludge of sewage treatment plant is less than 20%.The sludge treatment handling problems has become the bottleneck problem that restriction entire sewage treatment industry develops in a healthy way, and also more and more is subjected to the great attention of governments at all levels.
Various countries have taked different processing modes to mud at present, mainly contain and fill out sea, landfill, burning and soil and utilize several method, wherein fill out the sea, forbidden by International Law of the Sea owing to serious pollution problem occurred, each state all abrogates basically, and remaining several disposal options respectively have quality.From technical difficulty relatively, the technical difficulty of landfill is minimum, secondly is the soil utilization, and what difficulty was the highest is to burn.And the problem of landfill method is, because refuse landfill mostly is greatly in the open, just the safety in place is constituted serious harm through the mud that resiles behind several the rain.Because through the mud after the simple process, steady state is easy to be broken, rainfall just can make mud resile.Not only mud runs wild, and mud is also very serious to the corrosion penetration phenomenon of refuse landfill safeguards, and the life-span of many refuse landfills is shortened greatly, and the municipal sewage plant often becomes heavy polluter.
From cost of investment, the input cost of burning is the highest, secondly is landfill, and the soil utilizes cost minimum.And coming comparison from environmental risk, there are the risk of tail gas and groundwater pollution respectively in burning and landfill.The risk of the direct soil utilization of mud also needs control, though do not contain the part organic matter through in the mud of special disposal, but the heavy metal that wherein contains, pathogenic bacteria and other long-acting organic pollutants all can produce harm to soil, and the quality of crop is had a strong impact on.Caused the soil salt damage, burnt problems such as seedling and disease and pest at some local arbitrarily applying sludge fertilizer.
Summary of the invention
Technical problem to be solved by this invention provides the sludge treatment method that a kind of cost of investment is low, simple to operate, the region suitability is wide, realizes innoxious, minimizing, the resource utilization of sludge disposal.
For solving the problems of the technologies described above, the invention provides a kind of method of utilizing the earthworm treating sludge in large scale, it is characterized in that comprising three phases:
Fs is the cultivation of soil microorganisms, comprising:
1, cultivating matrix selects: the fresh excreta of milk cow or finished cattle;
2, cultivate bed and establish dimensional requirement: high 25cm;
3, humiture index in the cultivating process: cultivate bed humidity span of control 60%～70%, cultivate 20 ℃～25 ℃ of bed tempertaure span of control;
4, the place is selected: between 15 ℃-25 ℃ of the envrionment temperatures;
5, working method: cladding thickness is 5 centimeters a woven straw on cultivate bed, after 72 hours, obtain soil microorganisms---nematode, the spring worm of needs, the bed temperature humidity is once cultivated in observation in every interval 3.5-4.5 hour in the cultivating process, adopts the humiture instrument to measure;
6, cultivate successfully sign: the gross weight of nematode, spring worm is 1: 100 with the weight ratio of cultivating base-material;
Subordinate phase is the cultivation that is suitable for handling the extraordinary biological seed of mud, comprising:
1, finishes after the cultivation of fs nematode, spring worm, on the cultivation bed, put into acclimatization training and the cultivation that the earthworm seed carries out sludge treatment, working method: evenly digging out diameter on the cultivation bed is 20cm, the degree of depth is the cylindrical hole of 25cm, the earthworm seed will be cultivated in advance then and base material mixture is put into cylindrical hole, cultivating earthworm seed and base-material part by weight is 1: 4, and at a distance of 50cm, cylindrical hole is apart from cultivating 25 centimeters at bedside edge between per two cylindrical holes;
2, after cultivating the whole conversions fully of bed cow dung, begin to carry out the cultivating process of the formal extraordinary earthworm seed that is suitable for sludge treatment:
(1) with mud and cow dung weight ratio be on 1: 1 the batch mixing to cultivating on the bed, allow earthworm this kind batch mixing of searching for food, the acclimatization training and the cultivation of the beginning the first step, mode according to this, repeated several times all disposes until going up batch mixing;
(2) the batch mixing ratio is adjusted into mud: cow dung=3: 1, and other is with (1) step;
(3) the batch mixing ratio is adjusted into mud: cow dung=9: 1, and other is with (1) step;
(4) go up to the base-material of cultivating on the bed cow dung of no longer mixing, adopt 100% mud, other is with (1) step;
Phase III is to utilize extraordinary biological seed to handle mud, comprising:
(1) lays sludge organism and handle bed;
(2) earthworm seed implantable bioartificial is handled bed;
(3) daily production management;
(4) extraction of extraordinary earthworm kind live body and wormcast;
(5) the organic sludge circulation is laid to handling bed.
2. (1) steps of subordinate phase: material loading adopts the method for beating the ridge, and the 0.3 meter laying batch mixing in every interval, batch mixing are banded to be laid, and direction is vertical with the cultivation bed, and the batch mixing bandwidth is 0.3 meter, in the treating processes, keeps cultivating bed humidity 60%～70%, 20 ℃～25 ℃ of temperature.
The 1st step of subordinate phase base material mixture comprises 70% wormcast, 20% straw excrement and 10% mushroom bacteria slag.
The present invention utilizes earthworm city domestic sewage treatment plant mud to be carried out the method cost of investment that mass-producing handles is low, simple to operate, the region suitability is wide; mud is handled the back volume through this kind method can reduce to 1/6 of original volume; it is stable to handle back product (wormcast) physics and chemical property; meet the organic fertilizer application standard; can carry out widespread use in fields such as soil improvement (as alkaline land improvement), urban afforestation, animals and plants breed; obtain considerable economic, realize recycling.So the application of this kind method in sludge treatment is feasible, can realize innoxious, minimizing, the resource utilization of sludge disposal.
Description of drawings
Fig. 1 is the inventive method schema;
Fig. 2 handles drawing of site;
Fig. 3 is the concrete structure figure of ridge formula biological treatment bed;
Fig. 4 is extraordinary earthworm kind live body and wormcast extraction step one structure iron;
Fig. 5 is extraordinary earthworm kind live body and wormcast extraction step two structure iron;
Fig. 6 is extraordinary earthworm kind live body and wormcast extraction step three structure iron;
Fig. 7 is extraordinary earthworm kind live body and wormcast extraction step four structure iron;
Fig. 8 is that another kind of wormcast extracts the operation zone chart;
Fig. 9 is that another kind of wormcast extracts operating unit area-graph vertical view;
Figure 10 is that another kind of wormcast extracts operating unit area-graph side elevational view;
Figure 11 is that another kind of wormcast extracts operation backfill figure side elevational view.
Embodiment
With reference to Fig. 1, the inventive method comprises:
One, culture bed laying of soil microorganisms and cultivation;
Breeding condition:
1, cultivating matrix selects: the fresh excreta of milk cow or finished cattle;
2, cultivate bed and establish dimensional requirement: wide 1m, high 25cm, length are not limit;
Annotate: cultivate bedside and be suggestion production size, not as cultivating the necessary of soil microorganisms and must following one of condition.
3, humiture index in the cultivating process: cultivate bed humidity 60%, cultivate 20 ℃ of bed tempertaures;
4, the place is selected: envrionment temperature is at 15 ℃;
5, working method: satisfying on the basis of the above condition, cladding thickness is 5 centimeters a woven straw on cultivate bed, after 72 hours, can obtain the soil microorganisms---nematode, the spring worm that need.Every interval will be observed and once cultivate the bed temperature humidity in 3.5 hours in the cultivating process, adopted the humiture instrument to measure;
6, cultivate successfully sign: the gross weight of nematode, spring worm is 1: 100 with the weight ratio of cultivating base-material
Two, the culture bed input of soil microorganisms earthworm;
Finish after the cultivation of the first step nematode, spring worm, on the cultivation bed, put into acclimatization training and the cultivation that the earthworm seed carries out sludge treatment, working method: evenly digging out diameter on the cultivation bed is 20cm, the degree of depth is the cylindrical hole of 25cm, to cultivate earthworm seed and 70% wormcast, 20% straw excrement and 10% mushroom bacteria slag mixture then in advance and put into cylindrical hole, the weight ratio of cultivating earthworm seed and wormcast, straw excrement and mushroom bacteria slag mixture is 1: 4, at a distance of 50cm, cylindrical hole is apart from cultivating 25 centimeters at bedside edge between per two cylindrical holes;
(3) obtaining earthworm, spring worm, nematode tames;
With mud and cow dung weight ratio be on 1: 1 the batch mixing to cultivating on the bed, allow earthworm this kind batch mixing of searching for food, the acclimatization training and the cultivation of the beginning the first step.Material loading adopts the method for beating the ridge, and the 0.3 meter laying batch mixing in promptly every interval, batch mixing are banded to be laid, and direction is vertical with the cultivation bed, and the batch mixing bandwidth is 0.3 meter.In the treating processes, it is identical with cultivation soil microorganisms condition to keep cultivating the bed temperature humidity index, and mode repeats 3 times according to this, all disposes until going up batch mixing;
(4) stable earthworm, spring worm, nematode;
The batch mixing ratio is adjusted into mud: cow dung=3: 1, and other is with (3) step;
(5) stable earthworm, spring worm, nematode;
The batch mixing ratio is adjusted into mud: cow dung=9: 1, and other is with (3) step;
(6) stable earthworm, spring worm, nematode;
Go up to the base-material of cultivating on the bed cow dung of no longer mixing, adopt 100% mud, other is with (3) step;
(7) stable earthworm, spring worm, nematode seed;
(8) lay sludge organism and handle bed;
(9) earthworm seed implantable bioartificial is handled bed;
(10) daily production management;
(11) extraction of extraordinary earthworm kind live body and wormcast;
(12) the organic sludge circulation is laid to handling bed.
With reference to Fig. 2, lay sludge organism and handle bed: it is long 50 meters, wide 2 meters to handle bed, and thickness is 0.25 meter.Handle between bed and leave operating walk way, 0.5 meter in manual operation passage, 1.5 meters in power operation passage is convenient to artificial or mechanical production operation, and every biological treatment bed is ridge formula structure, and the biological treatment bed of a standard can be handled organic useless 2 cubic metres admittedly every day.
With reference to Fig. 3, earthworm seed implantable bioartificial is handled bed: directly beat ditch on the biological treatment bed of completing, 0.5 meter of furrow width, the organic waste that scoop up are divided equally to both sides, make useless admittedly the processing take up high 0.25 meter, wide 0.5 meter of ridge, then the mixture of ready earthworm and wormcast is dropped in the ditch equably.One ton of mud is thrown in 1 ton of earthworm, 2 tons of wormcasts.The mixture height is about 0.25 meter, and is wide 0.5 meter, and length is 50 meters with handling bed length is identical.
Daily production management: whenever finish one the biological treatment bed establish charge seed after, with its whole coverings, every biological treatment bed is covered by two straw bands with straw, and straw thickness is about 5 centimeters, the direction of straw is perpendicular to the direction of handling bed, and two row's straw tops are relative.Water then to keep handling the humidity of bed, watering requires to spray evenly, and suggestion should use humidity tester to measure between 60%-70% with the mode of sprinkling irrigation, the aftertreatment bed humidity of watering.To observe the humiture of biological treatment bed afterwards every day, in time adjust, make every effort to keep the optimal environmental condition of earthworm growth.
The extraction of extraordinary earthworm kind live body and wormcast:
The extraction of a. extraordinary earthworm kind live body:
Step 1: plastic cloth or plastic braided plate are placed on the passageway of handling between bed;
Step 2: the mixture of extraordinary earthworm kind live body and wormcast is scooped up to be placed on the plastic cloth or plastic braided plate that lays in advance from handling bed;
Step 3: use artificial high light or sun exposure, the habit of utilizing earthworm to keep in dark place, meeting the light time when extraordinary earthworm kind live body can constantly pierce to the batch mixing deep layer, ceaselessly remove the base-material and the earthworm excrement (available besom is gently swept) on upper strata then, the extraordinary earthworm kind live body in back will all be stayed on the plastic cloth several times repeatedly.
Step 4: the base-material and the earthworm excrement that clean out are backfilling into the processing bed, avoid losing of extraordinary earthworm kind live body ovum.
B. the extraction of wormcast:
Because only living in, earthworm handles 25 centimeters of beds topmost, so when extracting, from handling bed one end, to there be the soil layer of 25 centimeters of the tops of earthworm to start to pile and handle bed foremost, for ease of operation, the operation width is about 1 meter, and surplus materials is wormcast in this meter width range, with its taking-up.Carry out the operation that next one meter length is handled bed then, method is as above handled the extraction of wormcast in the bed until final stage.After wormcast extracted, the entire treatment bed was that forward end has moved 1 meter, and take opposite direction to carry out when extracting next time, biological treatment bed homing.
With reference to Fig. 4, step 1: move first section extraordinary earthworm kind live body mobile layer to handling the bed front end.
With reference to Fig. 5, step 2: take first part's wormcast away.
With reference to Fig. 6, step 3: move forward the extraordinary earthworm kind of next section live body mobile layer.
With reference to Fig. 7, step 4: take next section wormcast away.
The organic sludge circulation is laid to handling bed: will be before mud is laid handling the bed overturning once, and stirring top 25 centimeters has the soil layer of earthworm movement to get final product, and fork inserts, overturning up and down.It is loose to be convenient to handle bed, increases ventilation property, helps the growth of earthworm, thereby accelerates the processing speed of mud.Directly beating the ridge formula during material loading on the processing bed lays, the 0.5 meter material loading in every interval, 0.5 meter of row spacing is high 0.25 meter, hocketing for " sludge treatment band " and " biological buffer memory band " in each material loading position, can avoid the ammonia of the mud generation that do not ferment to cause the death of earthworm like this.
Project processing power and land area corresponding data:
Take to take to build the sludge treatment base nearby in the processing specific operation process of this kind technology to mud, lay the production and construction pattern of " biological treatment bed " in the base, one of condition so the soil is absolutely necessary on this The Application of Technology, Details as Follows:
(1) to establish specification be wide 2 meters to organic solid useless biological treatment bed, and thick 0.25 meter, length is according to the situation decision of actual field ground." ridge formula structure " taked in the laying of biological treatment bed, and the 0.5 meter laying in promptly every interval promptly " is handled band " through pretreated organic solid castoff Gu give up; Interval-zone is " a biological buffer strip ", regularly adds a cover earthworm and wormcast.
(2) establish specification according to the biological treatment bed, 1 cubic metre of mud need be laid and handle 4 meters of beds, can in 7 days waste all be converted into biological organic fertilizer.Deduction " biological buffer memory band " area occupied, solid useless processing of actual laying is with about 4.Because of handling useless admittedly transition phase is 7, and therefore needing to lay the solid final numeral of scratch tape is 28.
(3) every solid useless 0.5 meter of bandwidth of handling, long 2 meters, the area of therefore 28 " Gu the useless bands of handling " is about 28 square metres.Handle interband and be all 28 square metres, therefore, add up to 56 square metres at the biological treatment bed floor space of 1 cubic metre of mud every " biological buffer memory band " area.
(4) can calculate according to handling drawing of site, handle the shared actual land area of bed and be about 70% of the base total area, therefore, setting up a throughput is the biological treatment base that can transform 1 cubic metre of organic sludge on the 7th, and needing the land occupation total area is 80 square metres.
(5) handle base and sludge treatment bed orthographic plan.
The extracting method of another wormcast:
With reference to Fig. 8, take down and be put into earthworm bed one side handling coverture on the bed, will handle bed again is that unit is divided into plurality of sections with 1 meter, presses odd number section extraction wormcast;
With reference to Fig. 9,10, about the wormcast zone leveling that is extracted is divided into two sections, the mixture that has earthworm base feed is cleared the original place, be placed on and face mutually on the earthworm bed;
With reference to Figure 11, after wormcast extracted, the mixture that will have earthworm and basic feed was filled out reposition again, and laying depth is the earthworm feedstuff (excrement of animals) of 0.2 meter (promptly 20 centimetres) in the above.
4. bedding things such as woven straw or cornstalk are covered again, water then, make its earthworm bed water content at 60%--70%.
Annotate: the each extraction pressed even number or the extraction of odd number section, promptly presses for the first time the even number section and extracts, and must extract by the odd number section for the second time.
Claims (2)
1. method of utilizing the earthworm treating sludge in large scale is characterized in that comprising three phases:
Fs is the cultivation of soil microorganisms, comprising:
(1) cultivating matrix selects: the fresh excreta of milk cow or finished cattle;
(2) cultivate bed and establish dimensional requirement: high 25cm;
(3) humiture index in the cultivating process: cultivate bed humidity span of control 60%～70%, cultivate 20 ℃～25 ℃ of bed tempertaure span of control;
(4) place is selected: between 15 ℃-25 ℃ of the envrionment temperatures;
(5) working method: cladding thickness is 5 centimeters a woven straw on cultivate bed, after 72 hours, obtain soil microorganisms---nematode, the spring worm of needs, the bed temperature humidity is once cultivated in observation in every interval 3.5-4.5 hour in the cultivating process, adopts the humiture instrument to measure;
(6) cultivate successfully sign: the gross weight of nematode, spring worm is 1: 100 with the weight ratio of cultivating base-material;
Subordinate phase is the cultivation that is suitable for handling the extraordinary biological seed of mud, comprising:
(1) finishes after the cultivation of fs nematode, spring worm, on the cultivation bed, put into acclimatization training and the cultivation that the earthworm seed carries out sludge treatment, working method: evenly digging out diameter on the cultivation bed is 20cm, the degree of depth is the cylindrical hole of 25cm, the earthworm seed will be cultivated in advance then and base material mixture is put into cylindrical hole, cultivating earthworm seed and base-material part by weight is 1: 4, and at a distance of 50cm, cylindrical hole is apart from cultivating 25 centimeters at bedside edge between per two cylindrical holes;
Base material mixture comprises 70% wormcast, 20% straw excrement and 10% mushroom bacteria slag;
(2) after cultivating the whole conversions fully of bed cow dung, begin to carry out the cultivating process of the formal extraordinary earthworm seed that is suitable for sludge treatment:
(2.1) with mud and cow dung weight ratio be on 1: 1 the batch mixing to cultivating on the bed, allow earthworm this kind batch mixing of searching for food, the acclimatization training and the cultivation of the beginning the first step, mode according to this, repeated several times all disposes until going up batch mixing;
(2.2) the batch mixing ratio is adjusted into mud: cow dung=3: 1, and other is with (2.1) step;
(2.3) the batch mixing ratio is adjusted into mud: cow dung=9: 1, and other is with (2.1) step;
(2.4) go up to the base-material of cultivating on the bed cow dung of no longer mixing, adopt 100% mud, other is with (2.1) step;
Phase III is to utilize extraordinary biological seed to handle mud, comprising:
(1) lays sludge organism and handle bed;
(2) extraordinary biological seed implantable bioartificial is handled bed;
(3) daily production management;
(4) extraction of extraordinary earthworm kind live body and wormcast;
(5) the organic sludge circulation is laid to handling bed.
2. a kind of method of utilizing the earthworm treating sludge in large scale according to claim 1; it is characterized in that: (2.1) of subordinate phase in (2) step: material loading adopts the method for beating the ridge; the 0.3 meter laying batch mixing in every interval; batch mixing is banded and lays; direction is vertical with the cultivation bed, and the batch mixing bandwidth is 0.3 meter, in the treating processes; keep cultivating bed humidity 60%～70%, 20 ℃～25 ℃ of temperature.
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| CN2010101060641A CN101746936B (en) | 2010-02-05 | 2010-02-05 | Method for treating sludge in large scale by utilizing earthworm |
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| CN2010101060641A CN101746936B (en) | 2010-02-05 | 2010-02-05 | Method for treating sludge in large scale by utilizing earthworm |
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| CN101746936B true CN101746936B (en) | 2011-04-20 |
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Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092912B (en) * | 2010-12-10 | 2012-11-21 | 刘波 | Method for disposing sludge generated in sewage treatment plant by using earthworms |
| CN103120050A (en) * | 2013-02-06 | 2013-05-29 | 天津市嘉沃科技有限公司 | Soil improvement method |
| CN103449698B (en) * | 2013-09-17 | 2016-01-13 | 泰州市春光生态农业发展有限公司 | A kind of method of earthworm high-level efficiency process municipal sludge |
| CN103524224A (en) * | 2013-10-15 | 2014-01-22 | 淮北师范大学 | Selenium-rich organic fertilizer based on wormcast |
| CN103988725B (en) * | 2014-05-27 | 2016-06-29 | 四川农业大学 | Municipal sludge is utilized to prepare flame nettle cultivation matrix and flame nettle cultural method |
| CN105254157A (en) * | 2015-11-18 | 2016-01-20 | 兰州交通大学 | Method for treating urban sludge through earthworms |
| CN106034437B (en) * | 2016-05-26 | 2018-02-27 | 天津市畜牧兽医研究所 | Method and application using the heavy salinized ground of earthworm and pyrolkigneous liquid comprehensive repair |
| CN106035243B (en) * | 2016-06-16 | 2018-11-13 | 辽宁华电环保科技有限公司 | The method for utilizing domestic sludge breeding earthworm in greenhouse as bed base using cow dung |
| CN106316584A (en) * | 2016-08-11 | 2017-01-11 | 同济大学 | Method and device for treating residual sludges |
| CN106332847A (en) * | 2016-08-29 | 2017-01-18 | 山东胜伟园林科技有限公司 | Method for ecologically improving saline-alkali land of Yellow River irrigated areas by earthworm |
| CN107912097A (en) * | 2017-10-20 | 2018-04-17 | 宁夏三度生态农业科技有限公司 | A kind of saline-alkali soil improvement method |
| CN108002678A (en) * | 2017-12-08 | 2018-05-08 | 湖北田申甲生物环保科技有限公司 | A kind of biological utilization method of municipal sludge |
| CN111718091A (en) * | 2020-06-24 | 2020-09-29 | 黄明甲 | Municipal sludge treatment method |
| CN112174464B (en) * | 2020-11-02 | 2022-02-08 | 云南大学 | System, method and medium for treating heavy metal sludge of sewage treatment plant by using earthworms |
| CN112551845A (en) * | 2020-12-21 | 2021-03-26 | 山东汇城环保科技有限公司 | Method for reducing weight and sterilizing sludge by using earthworms |
| CN113940254A (en) * | 2020-12-21 | 2022-01-18 | 山东汇城环保科技有限公司 | Method for planting cash crops by utilizing wormcast instead of turfy soil and hillside soil |
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