CN104843960A - Household garbage and municipal sludge synergized recycling treatment process - Google Patents

Household garbage and municipal sludge synergized recycling treatment process Download PDF

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Publication number
CN104843960A
CN104843960A CN201510227021.1A CN201510227021A CN104843960A CN 104843960 A CN104843960 A CN 104843960A CN 201510227021 A CN201510227021 A CN 201510227021A CN 104843960 A CN104843960 A CN 104843960A
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CN
China
Prior art keywords
mud
mixture
municipal sludge
metal
sand
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510227021.1A
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Chinese (zh)
Inventor
伍长青
肖燕
钱兵
李军
陈竹
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Nantong Tianlan Environmental Protection and Energy Equipment Co Ltd
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Nantong Tianlan Environmental Protection and Energy Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Nantong Tianlan Environmental Protection and Energy Equipment Co Ltd filed Critical Nantong Tianlan Environmental Protection and Energy Equipment Co Ltd
Priority to CN201510227021.1A priority Critical patent/CN104843960A/en
Publication of CN104843960A publication Critical patent/CN104843960A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

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  • Processing Of Solid Wastes (AREA)

Abstract

The invention relates to a household garbage and municipal sludge synergized recycling treatment process, and relates to the technical field of treatment of household garbage and municipal sludge. The household garbage and municipal sludge synergized recycling treatment process comprises the following steps: the household garbage is subjected to bag breakage, pulverization and water separation, and thus a mixture of sand and metal and a mixture of slurry and suspended matter are obtained respectively; the mixture of sand and metal undergoes magnetic separation, and thus sand particles and metal are obtained respectively; the mixture of slurry and suspended matter undergoes grid separation, and thus slurry and suspended matter are obtained respectively; then the slurry and the municipal sludge are mixed and are subjected to hydrolytic acidification; after filter pressing and dehydration, filter cakes and anaerobic hydrolysate are obtained respectively, and the filter cakes are burned, and the anaerobic hydrolysate is used for anaerobic fermentation so as to generate methane. The process does not generate secondary pollution, and the process is energy-saving.

Description

One way of life rubbish and municipal sludge work in coordination with recycling treatment process
Technical field
The present invention relates to green technology, particularly to the processing technology field of domestic refuse and municipal sludge.
Background technology
The current processing mode of domestic refuse is burning electricity generation, in order to improve combustion heat value, needs fermentation to dewater after 5 ~ 7 days before burning again.But msw water content is not higher, furnace temperature instability can be caused, burn thoroughly, easily produce secondary pollution.Meanwhile, the metal in rubbish and inoganic solids easily cause serious wear to the fire grate of incinerator.
The current main processing ways of excess sludge of municipal sewage plant is the method for carrying out again after dry (or degree of depth filter-press dehydration) burning, wherein dry cost is higher, also have and municipal sludge carried out Anaerobic Digestion, but due to mud carbon-nitrogen ratio lower, be not suitable for carrying out anaerobically fermenting separately.And municipal sludge degree of depth filter-press dehydration technology is very ripe, there is the advantages such as process is large, utilize the degree of depth filter-press dehydration technique municipal sludge can be dewatered at most to about 40%.
Promoting categorized consumer waste collects owing to being subject to various reasons impact, desirable effect is reached by being difficult within considerable time, this just causes waste incineration necessarily mixed burning, namely this waste the resource (as plastics) of some reusable edibles, too increases cost and the environmental risk of burning.
Summary of the invention
The present invention seeks to propose one and do not produce secondary pollution, and energy-conservation domestic refuse and municipal sludge work in coordination with recycling treatment process.
The present invention by domestic refuse through broken bag, pulverize after through wet concentration, obtain the mixture of sand and metal and the mixture of mud and suspended substance respectively; By the mixture of sand and metal through magnetic separation, obtain sand grains material and metal respectively; Mud is separated through grid with the mixture of suspended substance, obtains mud and suspended substance respectively; Again by acidication process after mud and municipal sludge mixing, after filter-press dehydration, obtain mud cake and anaerobic hydrolysate respectively, mud cake burns, and anaerobic hydrolysate carries out pressure aerobe fermentation and forms methane.
Domestic refuse can be sent in large-size ball mill to carry out broken bag, pulverizing by the present invention, and the object of pulverizing is that garbage shares alive for the kitchen remaining years is worn into mud, and the particle diameter no requirement (NR) after pulverizing all the other compositions, masonry etc. become sand shape through pulverizing.The object of wet concentration of the present invention is being separated of mixture various material being realized the mixture of sand and metal, mud and suspended substance by proportion difference.The mixture of sand and metal, through magnetic separation, therefrom sub-elects metal, recoverable, for brickmaking after remaining sand grains material is recyclable.The suspended substance obtained after grid is separated is mostly kitchen-can bag, can collection and treatment further.Acidication process after the mud obtained after grid is separated and municipal sludge mix, the mud cake obtained through filter-press dehydration enters burning again, greatly can improve firing efficiency, reduces the construction of incinerator.The liquids recovery be press-filtered out adds in the pulverizing of initial domestic refuse.The anaerobic hydrolysate obtained through filter-press dehydration can be used for generating electricity through the biogas that pressure aerobe fermentation generates, and natural pond liquid enters sewage work and processes further.
Containing PP, PE plastics accounting for rubbish total amount about 10% in usual suspended substance, the present invention adopts wet concentration, and therefore plastics are all swum, and is cleaned up, and can reclaim and carry out granulation sale.The mud that mixed consumer waste produces through ball mill process, containing a large amount of organic and inorganics, be easy to realize filter-press dehydration, carbon-nitrogen ratio is also higher.Municipal sludge is mixed with mud, and acidication 3 days (the degradable thing of 90% is by soluble in water), then carrying out filter-press dehydration, mud cake is by lower, more stable to decrement more than 2/3, water ratio, and mud cake is sent in incinerator and carried out burning disposal.Pressing filtering liquid is due to the filtration through mud particle layer and filter cloth, suspended substance (SS) content is close to zero process, just can complete in 1 day and produce biogas reaction, so whole anaerobic biological treatment process can complete in 4 days, and conventional garbage, municipal sludge Anaerobic Microbiological Treatment Technology need 20-30 days, therefore significantly reduce floor space, facility investment and working cost.The biogas that pressing filtering liquid anaerobically fermenting produces is sent into incinerator and is carried out burning electricity generation, and natural pond liquid is delivered to sewage work by sewer line and carried out process up to standard.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
As shown in Figure 1, by domestic refuse 1 and mud supernatant liquor 2 through broken bag, pulverize 3 after through wet concentration 4, obtain the mixture of sand and metal and the mixture of mud and suspended substance respectively.
By the mixture of sand and metal through magnetic separation 5, obtain sand grains material 6 and metal 7 respectively, sand grains material 6 enters brickmaking technology 8.
Mud is separated 9 with the mixture of suspended substance through grid, obtains mud 10 and suspended substance 21 respectively.
Mud 10 and municipal sludge 11 are mixed rear acidication process 12, after filter-press dehydration 13, obtains mud cake 14 and anaerobic hydrolysate respectively, mud cake 14 carries out burning 16, and anaerobic hydrolysate carries out pressure aerobe fermentation 15 and forms methane 17.
Biogas 17 can be used for generating 18, and natural pond liquid 18 enters sewage work 20 and processes further.
Suspended substance 21 is again through sorting cleaning 22, and obtain combustiblematerials 23 and plastics 24 respectively, combustiblematerials 23 enters burning, and plastics 24 are for granulation 25.

Claims (2)

1. one way of life rubbish and municipal sludge work in coordination with recycling treatment process, it is characterized in that: by domestic refuse through broken bag, pulverize after through wet concentration, obtain the mixture of sand and metal and the mixture of mud and suspended substance respectively; By the mixture of sand and metal through magnetic separation, obtain sand grains material and metal respectively; Mud is separated through grid with the mixture of suspended substance, obtains mud and suspended substance respectively; Again by acidication process after mud and municipal sludge mixing, after filter-press dehydration, obtain mud cake and anaerobic hydrolysate respectively, mud cake burns, and anaerobic hydrolysate carries out pressure aerobe fermentation and forms methane.
2. domestic refuse and municipal sludge work in coordination with recycling treatment process according to claim 1, it is characterized in that: add mud supernatant liquor during pulverizing.
CN201510227021.1A 2015-05-07 2015-05-07 Household garbage and municipal sludge synergized recycling treatment process Pending CN104843960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510227021.1A CN104843960A (en) 2015-05-07 2015-05-07 Household garbage and municipal sludge synergized recycling treatment process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510227021.1A CN104843960A (en) 2015-05-07 2015-05-07 Household garbage and municipal sludge synergized recycling treatment process

Publications (1)

Publication Number Publication Date
CN104843960A true CN104843960A (en) 2015-08-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510227021.1A Pending CN104843960A (en) 2015-05-07 2015-05-07 Household garbage and municipal sludge synergized recycling treatment process

Country Status (1)

Country Link
CN (1) CN104843960A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107857450A (en) * 2017-11-24 2018-03-30 长兴华阁耐物流装备有限公司 A kind of environmental protection equipment for being used to handle sludge with multistage filtering
CN110252781A (en) * 2019-07-26 2019-09-20 郑州同济环保工程有限公司 Rubbish three phase separation treatment process
CN111672891A (en) * 2020-08-04 2020-09-18 第一环保(深圳)股份有限公司 Kitchen waste treatment method and treatment system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008012409A (en) * 2006-07-04 2008-01-24 Sumiju Kankyo Engineering Kk Waste water treatment apparatus and waste water treatment method
CN102607040A (en) * 2012-03-23 2012-07-25 上海康恒环境工程有限公司 Method for incinerating domestic garbage and municipal sludge together
CN102921760A (en) * 2012-10-16 2013-02-13 福建省安溪宏源工艺有限公司 Machining process for metal handicraft wire with plating layer
CN103381420A (en) * 2013-06-24 2013-11-06 南京万德斯环保科技有限公司 Device and method for sewage collaborative reutilization comprehensive treatment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008012409A (en) * 2006-07-04 2008-01-24 Sumiju Kankyo Engineering Kk Waste water treatment apparatus and waste water treatment method
CN102607040A (en) * 2012-03-23 2012-07-25 上海康恒环境工程有限公司 Method for incinerating domestic garbage and municipal sludge together
CN102921760A (en) * 2012-10-16 2013-02-13 福建省安溪宏源工艺有限公司 Machining process for metal handicraft wire with plating layer
CN103381420A (en) * 2013-06-24 2013-11-06 南京万德斯环保科技有限公司 Device and method for sewage collaborative reutilization comprehensive treatment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
孟宝峰: "城市垃圾厌氧消化处理工程工艺流程", 《中国沼气》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107857450A (en) * 2017-11-24 2018-03-30 长兴华阁耐物流装备有限公司 A kind of environmental protection equipment for being used to handle sludge with multistage filtering
CN110252781A (en) * 2019-07-26 2019-09-20 郑州同济环保工程有限公司 Rubbish three phase separation treatment process
CN111672891A (en) * 2020-08-04 2020-09-18 第一环保(深圳)股份有限公司 Kitchen waste treatment method and treatment system

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Application publication date: 20150819