CN104291544B - A kind of paper mill sludge produces biogas and method of comprehensive utilization - Google Patents
A kind of paper mill sludge produces biogas and method of comprehensive utilization Download PDFInfo
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- CN104291544B CN104291544B CN201410420326.XA CN201410420326A CN104291544B CN 104291544 B CN104291544 B CN 104291544B CN 201410420326 A CN201410420326 A CN 201410420326A CN 104291544 B CN104291544 B CN 104291544B
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- biogas
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- 239000010802 sludge Substances 0.000 title claims abstract description 53
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000000855 fermentation Methods 0.000 claims abstract description 11
- 230000001105 regulatory Effects 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 230000004151 fermentation Effects 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 239000003337 fertilizer Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000005191 phase separation Methods 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 claims abstract description 4
- 239000002351 wastewater Substances 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 238000004062 sedimentation Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 4
- 238000010790 dilution Methods 0.000 claims description 3
- 230000001376 precipitating Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000010801 sewage sludge Substances 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 230000003750 conditioning Effects 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 5
- 230000029087 digestion Effects 0.000 description 4
- 239000002028 Biomass Substances 0.000 description 3
- 239000002361 compost Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000002459 sustained Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Abstract
The open a kind of paper mill sludge of the present invention produces biogas and method of comprehensive utilization, the treating method comprises following steps: pretreatment, anaerobic treatment: the material in regulating reservoir enters A reactor through feed proportioning system, and CSTR mixes fermentation reactor entirely；Reaction rear stage reactor water outlet enters second reactor, the further anaerobic fermentation of UASB reactor, produces biogas and realizes gas, liquid, solid three phase separation simultaneously；Solid-liquid separation；Biogas is used for production application, and mud prepares fertilizer.The present invention utilizes two-stage anaerobic reactor fully the Organic substance in paper mill sludge to be converted into biogas, and mud prepares fertilizer, with low cost, and efficiency is high, energy-conserving and environment-protective.
Description
Technical field
The invention belongs to field of sludge treatment, particularly to the treatment technology of a kind of paper mill sludge.
Background technology
The development of paper industry, the sewage of papermaking enterprise reaches emission request mostly after treatment facility processes.
But the paper mill sludge precipitated in processing procedure becomes again new polluter.Not same order according to pulping wastewater treatment
Section, sludge types and the sludge quantity of generation differ.Can be divided into by sludge source: (1) primary sludge: from preliminary sedimentation tank；
(2) excess sludge: from the second pond after activated sludge process；(3) detritus mud: from the second pond after biomembrance process；(4) ripe
Mud: primary sludge is through postdigestive mud, also known as digested sludge；(5) chemical sludge: the mud produced by chemical precipitation method, again
Claim chemistry body refuse.According to statistics, often producing the paper of 1 ton, in the middle of discharged papermaking wastewater, the content of mud just can be up to 1.2 tons,
These paper mill sludges being precipitated become a difficult problem for puzzlement papermaking enterprise.Along with the sustained and rapid development of paper industry,
Annual newborn paper mill sludge substantial amounts and of a great variety.Papermaking wastewater and mud, allow paper industry have on high pollution always
Medicated cap, paper mill sludge more becomes one barrier affecting papermaking enterprise sustainable development.
The generating capacity of paper mill sludge is the highest, and the composition wherein contained is more complicated.In pulping and papermaking processes greatly
Part material fiber is used to produce paper product, and remaining biological organic matter major part is then transferred in waste water, so papermaking is dirty
Mud biomass content is enriched, and content of organics 50%-65% mainly contains cellulose, hemicellulose and lignin etc..Give up in papermaking
In water treatment procedure, waste water is after materialization, biochemical method process, and more than 90% float therein is separated and becomes mud.
How paper mill sludge is carried out biomass recycling use to have important practical significance.
The traditional paper mill sludge treatment technology of China does building materials, compost processed and landfill, and is made by paper mill sludge in recent years
The research carrying out utilizing for biomass mainly has burning electricity generation, pyrolytic technique, hydrogen producing technology, preparing active carbon technology and anaerobic digestion
Deng, but all to there is environmental protection the most up to standard for existing all technology, or the problem that cost-effective rate is low, such as to paper mill sludge
Speech, owing to its moisture content is high, needs to be dehydrated it when it is processed by technology such as using burning, aerobic compost, fortune
Row is relatively costly.Process according to aerobic compost and sanitary landfills method, can realize reduction, but biogas can not be produced and
Cause the wasting of resources, and also have significant limitation owing to moisture content is the highest.Meanwhile, paper mill sludge is high due to content of organics,
Process and need substantial amounts of power consumption and nutrient to add, also unsuitable for aerobic treatment process.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of two-stage anaerobic treatment technology paper mill sludge, fill
Dividing and Organic substance is converted into biogas, effectively process paper mill sludge, effect is notable, reaches discharge standard, with low cost.
For achieving the above object, the present invention takes following technical proposals to realize:
A kind of paper mill sludge produces biogas and method of comprehensive utilization, it is characterised in that the treating method comprises following steps:
A. pretreatment: paper mill sludge initially enters regulating reservoir, is provided with blender in regulating reservoir, by stirring action regulation dirt
The total solid residue of mud；
B. anaerobic treatment: the material in regulating reservoir enters A reactor through feed proportioning system, CSTR mixes fermentation reaction entirely
Device；Reaction rear stage reactor water outlet enters second reactor, the further anaerobic fermentation of UASB reactor, produces biogas the most real
Existing gas, liquid, solid three phase separation；
C. solid-liquid separation: in step b, waste water flow to sedimentation tank, is used for storing second reactor water outlet, and supernatant is back to
Feed proportioning system dilution raw material；
D. Treatment of Sludge: the sewage sludge storage that anaerobic reactor produces, at mud storage tank, enters filter pressing together with precipitating sludge
System prepares fertilizer.
Further, in step a, the total solid residue of mud is transferred to 8-10% by 15-30%.
Further, be provided with agitating device in A reactor, top arranges and is additionally provided with top agitating device.
Further, step b is provided with warming-up device in A reactor.
Further, step b is additionally provided with reflux pump outside A reactor.
Further, step b arranges insulation outside anaerobic reactor tank body.
Compared with prior art, the invention have the advantages that
The two-stage anaerobic digestion technology of the present invention is a kind of environmental friendliness, economically viable high-performance bio treatment technology, tool
Have an enormous advantage, can effectively realize " innoxious, minimizing and the resource " of organic garbage treatment；The anaerobism of the present invention
Digestion process has process control system, easily operation, degraded is fast, production process is totally-enclosed, and product is measurable and the feature such as recycling；
From the perspective of investment and operating cost, anaerobic digestion is the most economical.
Further, first the total solid residue of paper sludge raw material is adjusted by stirring action, principle can be overcome
Moisture content is relatively low, is directly entered in fermentation tank the defect being unfavorable for mix and blend.
Further, be provided with agitating device in anaerobic reactor, top arranges top agitating device, also set up simultaneously and heat
Equipment, reflux pump, arrange insulation outside tank so that tank body temperature tends to balance, and reduces the temperature difference, is conducive to the uniform of fermentation.
Accompanying drawing explanation
The process flow diagram that Fig. 1 paper mill sludge of the present invention processes.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments are merely to illustrate the present invention
Rather than restriction the scope of the present invention.In addition, it is to be understood that after having read the content that the present invention lectures, people in the art
The present invention can be made various changes or modifications by member, and these equivalent form of values fall within the application appended claims equally and limited
Scope.
Embodiment 1
Paper mill sludge is certain paper mill Sludge from primary sedimentation tank, excess sludge, detritus mud, ripe sludge and chemical sludge.
Fig. 1 is the process flow diagram that paper mill sludge of the present invention processes, as it is shown in figure 1, comprise the following steps:
Pretreatment: paper sludge raw material is relatively low due to moisture content, is directly entered in fermentation tank and is unfavorable for mix and blend, therefore papermaking
Mud initially enters regulating reservoir, is provided with blender in regulating reservoir, is transferred to by 15-30% by the TS of paper mill sludge by stirring action
8-10%。
Anaerobic treatment: the material in regulating reservoir enters A reactor CSTR through feed proportioning system and entirely mixes fermentation reaction
Device.Agitating device it is provided with in anaerobic reactor；Top arranges top agitating device；Warming-up device it is provided with in reactor；Reactor
It is additionally provided with outward reflux pump；In can making tank body, temperature tends to balance, and reduces the temperature difference.Meanwhile, insulation is also set outside tank body.Two grades
Reactor uses UASB reactor, anaerobic fermentation further to A reactor water outlet, and the solid in precipitate and separate waste water suspends
Thing；Waste water is pumped to reactor bottom equably, and in tank interior, waste water is upwardly through comprising granule sludge or floc sludge
Sludge Bed generation anaerobic reaction.The gas produced produces gas stripping power during rising and plays stirring action, in causing
The circulation in portion, when gas rises to three phase separator, it is achieved gas, liquid, solid three phase separation；
Solid-liquid separation: step 2 waste water flow to sedimentation tank, is used for storing anaerobic effluent biogas slurry, and supernatant is back to join
Material system dilution raw material.
Treatment of Sludge: the sewage sludge storage that anaerobic reactor produces, at mud storage tank, enters filter pressing system together with precipitating sludge
Controlling is for fertilizer, and unnecessary mud is sold or prepares fertilizer.
In the present embodiment, 1 ton of raw material (moisture content 30%) is adjusted to TS is 8%-10%, can aerogenesis 60m in 20 days3。
Claims (5)
1. a paper mill sludge produces biogas and method of comprehensive utilization, it is characterised in that comprise the following steps:
A. pretreatment: paper mill sludge initially enters regulating reservoir, is provided with blender in regulating reservoir, by stirring action conditioning of mud
Total solid residue；
B. anaerobic treatment: the material in regulating reservoir enters A reactor through feed proportioning system, described A reactor is CSTR
Complete mixed fermentation reactor；Reaction rear stage reactor water outlet enters second reactor, the further anaerobic fermentation of second reactor, produces
Raw biogas realizes gas, liquid, solid three phase separation simultaneously, and second reactor uses UASB reactor；
C. solid-liquid separation: in step b, waste water flow to sedimentation tank, is used for storing second reactor water outlet, and supernatant is back to dispensing
System dilution raw material；
D. Treatment of Sludge: the sewage sludge storage that described A reactor produces, at mud storage tank, enters filter pressing together with precipitating sludge
System prepares fertilizer.
Paper mill sludge the most according to claim 1 produces biogas and method of comprehensive utilization, it is characterised in that mud in step a
Total solid residue be transferred to 8-10% by 15-30%.
Paper mill sludge the most according to claim 1 produces biogas and method of comprehensive utilization, it is characterised in that one-level in step b
Be provided with agitating device in reactor, top is additionally provided with top agitating device.
Paper mill sludge the most according to claim 1 produces biogas and method of comprehensive utilization, it is characterised in that one-level in step b
Warming-up device it is provided with in reactor.
Paper mill sludge the most according to claim 1 produces biogas and method of comprehensive utilization, it is characterised in that one-level in step b
Reflux pump it is additionally provided with outside reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410420326.XA CN104291544B (en) | 2014-08-25 | A kind of paper mill sludge produces biogas and method of comprehensive utilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410420326.XA CN104291544B (en) | 2014-08-25 | A kind of paper mill sludge produces biogas and method of comprehensive utilization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104291544A CN104291544A (en) | 2015-01-21 |
| CN104291544B true CN104291544B (en) | 2017-01-04 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A biogas production and comprehensive utilization method from papermaking sludge Effective date of registration: 20210904 Granted publication date: 20170104 Pledgee: Hangzhou branch of Zhejiang Tailong Commercial Bank Co.,Ltd. Pledgor: HANGZHOU QINGCHENG ENERGY ENVIRONMENTAL PROTECTION ENGINEERING Co.,Ltd. Registration number: Y2021330001379 |