CN103864274A - Biological drying treatment method for high-solid-content sludge obtained by anaerobic digestion - Google Patents
Biological drying treatment method for high-solid-content sludge obtained by anaerobic digestion Download PDFInfo
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- CN103864274A CN103864274A CN201410099298.6A CN201410099298A CN103864274A CN 103864274 A CN103864274 A CN 103864274A CN 201410099298 A CN201410099298 A CN 201410099298A CN 103864274 A CN103864274 A CN 103864274A
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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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
Abstract
The invention relates to a biological drying treatment method for high-solid-content sludge obtained by anaerobic digestion, and belongs to the field of solid waste treatment. The biological drying treatment method comprises the following steps: dehydrating the high-solid-content sludge obtained by the anaerobic digestion and uniformly mixing the high-solid-content sludge with a biodegradable auxiliary material according to a wet weight ratio from (5:1) to (5:3); adding a mixture into a biological drying reactor with the inflating volume of 0.05-0.10m<3>*h<-1>*kg<-1> and the inflating frequency of starting up for 4-10 minutes and stopping for 10-20 minutes; turning over for one time every three days; carrying out 18 days of biological drying treatment to obtain a base material with the water content rate of 16%-45% and utilizing the treated base material for agricultural utilization or land utilization. Compared with a traditional heat drying and aerobic composting treatment method, the biological drying treatment method has the advantages of short treatment time, small occupied area, low economic cost and the like.
Description
Technical field
The invention belongs to a kind of Solid waste disposal technical field, particularly a kind of high biological drying method for treating containing mud after solid anaerobic digestion.
Background technology
Along with China's level of urbanization improves constantly, sewage treatment facility construction has obtained high speed development, 2013 whole nation in an end of the year year mud ultimate productions will exceed 3,000 ten thousand tons (water ratio 80%) thus, process situation very severe, become the current important environmental problem urgently to be resolved hurrily of China.In numerous method for sludge treatment, anaerobic digestion process due to can energy recovery, to features such as environmental influence are little, become at present widely used sludge stabilizing and resource utilization method in the world, be considered to the first-elected technique of big-and-middle-sized sewage plant sludge processing.Wherein, the high anaerobic digestion process admittedly that contains can directly be processed dewatered sludge, has the advantages such as floor space is little, cost of investment is low, is the technology very with competitive power and development potentiality.After anaerobic digestion, mud content of inorganic nitrogen in is higher, has higher soil utility value, but its high humidity, volatile fat acid content are high, directly carry out soil utilization and can produce phytotoxicity, need be through further stabilization treatment.
For height containing solid anaerobic digestion after the feature of mud, a kind of comparatively feasible approach is that mud after digestion is carried out to solid-liquid separation, solid natural pond slag adopts aerobic composting process to process.But the treatment time of aerobic compost is long, (40-60 d), floor space is larger, is not suitable for the slag processing of large-scale mud natural pond.Biological dewatered technology is the new technology growing up on aerobic composting process basis, utilizes the organic bioenergy of microorganism aerobic metabolism, promotes moisture evaporation by process adjustment means, can reach biological dewatered object.Be conducive to transhipment, storage, the burning of follow-up mud natural pond slag.Compared with common high temperature aerobic composting technique, biological dewatered have features such as treatment time short (12-18d), floor space be little.Compared with heat drying technology, there is the advantages such as running cost is low, energy-conserving and environment-protective.
Biological dewatered technology has been widely used in the processing of raw sludge.But compared with raw sludge, the organic content of mud natural pond slag is lower, humidity is higher, how to regulate and control matrix, it is the key of the biological dewatered success or not of mud natural pond slag that matrix is heated up.
Summary of the invention
The object of the invention is, by regulation and control auxiliary material ratio and ventilation condition, matrix to be heated up, remove point simultaneously, aim to provide a kind of high treatment process containing consolidating sludge organism mummification after anaerobic digestion.
What the present invention proposed is a kind of high containing the solid biological dewatered treatment process of mud natural pond slag, and concrete steps are as follows:
(1) add height that the polyacrylamide of 0.5-1.0% is 10-20% to solid content containing solid anaerobic digestion after mud dewater, the natural pond slag that obtains dewatering, makes its water ratio be reduced to 60-80%;
(2) in the dehydration natural pond slag obtaining to step (1), add biodegradable auxiliary material, mud natural pond slag, mixes and obtains matrix than for 5:1-5:3 with the weight in wet base of biodegradable auxiliary material, and described matrix is joined in biological dewatered reactor;
(3) matrix in the biological dewatered reactor by gas blower, step (2) being obtained is inflated, and aeration quantity is 0.05-0.10m
3h
-1kg
-1matrix, inflation frequency, for opening 4-10min, is stopped 10-20min;
(4) every 3d carries out turning once to matrix;
(5) after 18d, can obtain the matrix that water ratio is 16-45%, can be used for agricultural or soil utilization.
In the present invention, described biodegradable auxiliary material is wheat resistates or straw.
Present method for the treatment of height containing solid anaerobic digestion after the advantage such as short, simple to operate, energy-conserving and environment-protective of concrete treatment time of mud, be convenient to transport, storage and the burning of mud natural pond slag.
Brief description of the drawings
Fig. 1 is high containing sludge organism drying and other treatment schema after solid anaerobic digestion.
Embodiment
The present invention need to determine following key parameter: supplementary product kind, auxiliary material adding proportion, ventilation and frequency, mud natural pond slag water ratio etc.Wherein, supplementary product kind affects the bio-degradable of matrix, thereby has influence on the removal of water supply in media; Auxiliary material adding proportion affects the physical structure of matrix, thus affect matrix fill wind effect; Ventilation and frequency can direct matrix oxygen content and moisture take away situation; Mud natural pond slag water ratio affects the moisture content of matrix, thereby affects the intensification of matrix.
Embodiment 1
Dewatered sludge is taken from Shanghai sewage work dehydrated sludge (water ratio is that 78%, VS is 57%), and dewatered sludge is after horizontal type anaerobic digestion reactor (12L) fully digests, and adding polyacrylamide to carry out press dewatering is 78% left and right to water ratio.After dehydration, natural pond slag adds biodegradable auxiliary material (wheat resistates) weight in wet base than being 5:1(mud: auxiliary material), fully stir, matrix gross weight is 4.2kg, joins in biological dewatered reactor.Filling air capacity is 250L/h, and frequency is for opening 10min, stopping 20min.After 18d drying and other treatment, the water ratio of matrix can drop to 45% left and right.
Embodiment 2
On the basis of embodiment 1, auxiliary material ratio is adjusted into weight in wet base than being 5:3.After drying and other treatment 9d, the water ratio of matrix can drop to 30%, and during to 18d, water ratio can drop to 16% left and right.
Embodiment 3
On the basis of embodiment 1, mud natural pond slag is dewatered to 60%, inflation frequency is adjusted into out 4min, while stopping 20min.After 18d drying and other treatment, the water ratio of matrix can drop to 35% left and right.
Comparing embodiment 4
On the basis of embodiment 1, when auxiliary material is changed to wood chip (bio-refractory auxiliary material), in drying process, substrate temperature is without obvious increase, and after 18d drying and other treatment, water ratio changes not obvious.
Comparing embodiment 5
While not adding auxiliary material, be respectively in 78% and 60% matrix at water ratio, in drying process, substrate temperature is without obvious increase, and after 18d drying and other treatment, water ratio changes not obvious.
Claims (2)
1. a high biological drying method for treating containing mud after solid anaerobic digestion, is characterized in that concrete steps are as follows:
(1) add height that the polyacrylamide of 0.5-1.0% is 10-20% to solid content containing solid anaerobic digestion after mud dewater, the natural pond slag that obtains dewatering, makes its water ratio be reduced to 60-80%;
(2) in the dehydration natural pond slag obtaining to step (1), add biodegradable auxiliary material, mud natural pond slag, mixes and obtains matrix than for 5:1-5:3 with the weight in wet base of biodegradable auxiliary material, and described matrix is joined in biological dewatered reactor;
(3) matrix in the biological dewatered reactor by gas blower, step (2) being obtained is inflated, and aeration quantity is 0.05-0.10m
3h
-1kg
-1matrix, inflation frequency, for opening 4-10min, is stopped 10-20min;
(4) every 3d carries out turning once to matrix;
(5) after 18d, can obtain the matrix that water ratio is 16-45%, can be used for agricultural or soil utilization.
2. the biological dewatered method of a kind of mud according to claim 1 natural pond slag, is characterized in that, described biodegradable auxiliary material is wheat resistates or straw.
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| CN201410099298.6A CN103864274A (en) | 2014-03-18 | 2014-03-18 | Biological drying treatment method for high-solid-content sludge obtained by anaerobic digestion |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105859333A (en) * | 2015-01-19 | 2016-08-17 | 无锡国联环保科技股份有限公司 | Method for resource utilization of sludge compost |
| CN109626783A (en) * | 2019-02-18 | 2019-04-16 | 苏州高新北控中科成环保产业有限公司 | A kind of sludge treatment technique of the biological dewatered coupling fluidized bed burning of superhigh temperature |
| CN110235742A (en) * | 2019-06-17 | 2019-09-17 | 上海大学 | A method of green plants matrix is prepared using sludge biogas residue |
| GB2616335A (en) * | 2021-12-29 | 2023-09-06 | Jacobs Eng Group Inc | Methods for increasing biosolids cake dryness through a forced ventilation aerated static pile biological drying process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428955A (en) * | 2007-11-06 | 2009-05-13 | 宋乾武 | Mechanical deep dehydration, biological desiccation and reclamation combined treatment process for sewage sludge |
| CN101962204A (en) * | 2010-09-21 | 2011-02-02 | 同济大学 | Low energy consumption method for producing fertilizer by sludge granulation-biological drying |
| CN102887616A (en) * | 2011-07-22 | 2013-01-23 | 中国科学院城市环境研究所 | Low strength continuous aeration quick biological 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 |
-
2014
- 2014-03-18 CN CN201410099298.6A patent/CN103864274A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428955A (en) * | 2007-11-06 | 2009-05-13 | 宋乾武 | Mechanical deep dehydration, biological desiccation and reclamation combined treatment process for sewage sludge |
| CN101962204A (en) * | 2010-09-21 | 2011-02-02 | 同济大学 | Low energy consumption method for producing fertilizer by sludge granulation-biological drying |
| CN102887616A (en) * | 2011-07-22 | 2013-01-23 | 中国科学院城市环境研究所 | Low strength continuous aeration quick biological 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105859333A (en) * | 2015-01-19 | 2016-08-17 | 无锡国联环保科技股份有限公司 | Method for resource utilization of sludge compost |
| CN109626783A (en) * | 2019-02-18 | 2019-04-16 | 苏州高新北控中科成环保产业有限公司 | A kind of sludge treatment technique of the biological dewatered coupling fluidized bed burning of superhigh temperature |
| CN110235742A (en) * | 2019-06-17 | 2019-09-17 | 上海大学 | A method of green plants matrix is prepared using sludge biogas residue |
| CN110235742B (en) * | 2019-06-17 | 2021-11-23 | 上海大学 | Method for preparing greening plant substrate by adopting sludge and biogas residues |
| GB2616335A (en) * | 2021-12-29 | 2023-09-06 | Jacobs Eng Group Inc | Methods for increasing biosolids cake dryness through a forced ventilation aerated static pile biological drying process |
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Application publication date: 20140618 |