CN201686599U - Dewatering sludge treatment system - Google Patents
Dewatering sludge treatment system Download PDFInfo
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- CN201686599U CN201686599U CN201020192022XU CN201020192022U CN201686599U CN 201686599 U CN201686599 U CN 201686599U CN 201020192022X U CN201020192022X U CN 201020192022XU CN 201020192022 U CN201020192022 U CN 201020192022U CN 201686599 U CN201686599 U CN 201686599U
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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
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Abstract
The utility model discloses a dewatering sludge treatment system which belongs to the technical field of sludge treatment. The dewatering sludge treatment system comprises a sludge pre-treatment part, an anaerobic fermentation part, a gas treatment part and a heating part. Compared with the prior art, the invention has the advantages of energy conservation, environment protection, high energy utilization rate, new energy development and the like, and can effectively solve the problem of sludge treatment.
Description
Technical field
The invention belongs to technical field of sludge treatment, more particularly, belong to a kind of treatment system of dewatered sludge.
Background technology
The sixties in 20th century, because wastewater treatment in China factory is less and treatment capacity is little, so the sludge treatment disposal does not become problem as yet.Because sewage work is few, sludge quantity is few and composition is simple, but simple process is fertile as farming, as in Shanghai, Beijing, Tianjin, mud uses as resource.The mud in cities such as Shanghai, Beijing, Tianjin is subjected to peasant's welcome, uses as farm manure.So at this stage mud is resource, sludge disposal does not become problem as yet.From the eighties in 20th century so far, China's municipal sewage treatment cause has obtained the jumping characteristic development, the municipal sewage plant is from more than 400 original 1822 of developing into 2009.Therefore the emphasis of this sewage disposal in period cause mainly concentrates in the construction of municipal wastewater treatment plant, fund, technology, equipment and the concentration of landholdings are on sewage work builds, the problem of sludge disposal is not appeared suddenly as yet, simultaneously, more fail in the sewage treatment project sludge treatment disposed and carry out detailed planning and design, cause the restriction of conditions such as each department is familiar with, fund, technology, soil, aspect sludge disposal, still receive based on farmland utilization and stacking pin, but because pollution problems such as heavy metal, agricultural use is restricted, and mud becomes hidden danger.After entering 21 century, along with the aggravation of urban development and environmental pollution, the construction of China's urban wastewater treatment firm begins accelerated development.National wastewater treatment rate in 2003 is that 42.39%, 2010 year wastewater treatment rate will reach 70%.Large amount of sewage treatment plant puts into operation, produces a large amount of mud every day, and the sludge disposal problem is extremely urgent, and sludge treatment is disposed has become the difficult problem that industry faces.
The moisture percentage in sewage sludge height, nearly more than 80%, this part shipwreck to be burning, and transportation cost is increased, and floor space increases during stacking.Microorganism, pathogenic agent content height do not add processing in the mud, directly use or throw aside, and can work the mischief to environment.The mud contaminate environment is discharged a large amount of greenhouse gases simultaneously, contains heavy metal simultaneously, does not use or enter food chain, entail dangers to HUMAN HEALTH if do not add control.
At present, the sludge ultimate disposal mode mainly contains both at home and abroad: comprehensive utilization, landfill and throwing sea.Comprehensive utilization comprises that mainly the utilization of forest land, farmland, sludge incineration product utilization, low temperature pyrogenation are produced combustiblematerials, anaerobically fermenting/biology is made gas, material of construction utilization.
After the sludge dewatering compost agricultural be present more domestic sewage works problem of researching and developing, contain a large amount of necessary for plant growth nutriment in a fertilizer (N in the mud, P, K), trace element and soil improvement agent (organic soil ulmin), so it is best final disposal method that forest land, mud farmland utilizes, but also contain the germ that plant and soil is had damaging effect in the mud, parasitic ovum, hardly degraded organic substance, heavy metal ion and N, the loss of P is to surface water and phreatic pollution, even may contain some carcinogenic substances, more to heavy metal contamination research at present.Therefore, before doing the utilization of forest land, farmland, compost treatment should be carried out, also these objectionable impuritiess should be removed simultaneously with kill pathogens and parasitic ovum.General problem is that detection means does not catch up with requirement at present, and processing cost can't balance each other with economic benefit, and the widespread usage of chemical fertilizer causes the selling market to be difficult to exploitation etc., and these make this kind disposal options not obtain general popularization as yet.China has a large amount of trade effluents to enter sewage work, and heavy metal ion has approximately and transfers to more than 50% in the mud in the sewage, and the heavy metal ion content in the mud is generally all higher.For the agricultural amount that improves mud can take some measures: the one, mud is made organic-inorganic composite fertilizer, suitably add potash fertilizer to replenish the deficiency of potassium in the sludge manure, can improve the content that fertilizer efficiency reduces nuisance like this; The 2nd, the unit or the individual of preferential use mud compound manure on economic policy, as provide free fertilizer sample on probation freely make soil nutrient status analysis etc. for the zone of applying sludge compound manure or plot.
The sludge incineration product utilization: closed a certain amount of organic composition in the mud, the mud through dehydrating can be used burning disposal.In Japan, this method accounts for more than 60% of sludge treatment total amount, European Union also more than 10% the sixth of the twelve Earthly Branches.For preventing from the burning process to produce toxic gas such as dioxin, incineration temperature should be higher than 850 ℃.The burning ash that sludge incineration produced has water-absorbent, solidifiability, thereby can be used for improving the soil, builds the road etc., also can be used as the raw material of brick and tile and pottery etc., and in addition, sludge ash also can be used as the flour filler of concrete batch mixing.Mud is transformed into a kind of granular fuel, can finely burns, its calorific value and brown coal are suitable, and the obnoxious flavour that burning discharges is far below burning process, and its resistates can be used for building industry.Sludge incineration can obtain dump energy from waste gas, be used for generating electricity.In dewatered sludge, add additives such as detonator, catalyzer, raising agent and sulphur-fixing agent and make synthol, this synthol can be used for industry and the life pot is jealous of, flameholding, thermal testing and environmental protection test are good, are a kind of desirable approach that mud effectively utilizes.
Low temperature pyrogenation is produced combustiblematerials: Heat-chemical Treat Method of Sludge is innoxious and thorough reduction because of it, and the status strengthens gradually.The sludge at low temperature pyrolysis is a kind of developing energy recovery type Heat-chemical Treat Method of Sludge technology.It by anaerobic heat drying mud under catalyst action to certain temperature (＜500 ℃), make mud be converted into combustible products such as oil, reaction water, non-condensable gases and charcoal by destructive distillation and thermolysis effect, maximum conversion rate depends on that mud is formed and the kind of catalyzer, normal productive rate is 200～300L (oil)/t (a dried mud), and its character is similar to diesel oil.
Anaerobically fermenting/biology system gas: producing biogas with mud is in the reaction vessel of automatization control, various different conditions according to handled thing are regulated the anaerobic environment in the container at any time, reach and make full use of the ubiquitous microorganism of nature, participate in organism fermentative degradation (hydrolysis, acidifying, gasification) step by step, finally realize methanation.Mainly be gasiform methane and carbonic acid gas in the tunning (biogas), it is collected the back as clean fuel.Because of there being the polymkeric substance of ring compound---humic acid, can do base manure, the earth material of field grain-production or urban afforestation in the residue of discharging (only about 50% of surplus former total amount).The anaerobic treatment of mud and biogas utilization are the American-European more comprehensive utilization of mud modes of using.
Material of construction utilizes: mud can be used for brickmaking and fibreboard made material.The method of making brick from sludge has two kinds.A kind of is with the direct brickmaking of dewatered sludge, and another kind is with the brickmaking of mud lime-ash.During with the direct brickmaking of dewatered sludge, the composition of reply mud is done suitably to adjust, and makes the chemical ingredients of its composition and brick clay suitable.When mud and clay during by weight 1: 10 batching, sludge brick can reach the intensity of ordinary red brick.When utilizing sludge burning ash residue brickmaking, the chemical ingredients of cindery chemical ingredients and brick clay is more approaching, only need add an amount of clay and silica sand during base.Relatively more suitable ingredients by weight is than being lime-ash: clay: silica sand=100: 50: (15～20).The biochemical fiberboard of mud system, mainly be to utilize contained crude protein (organism) and sphaeroprotein (enzyme) in the active sludge can be dissolved in this character of the aqueous solution of water and diluted acid, diluted alkaline, neutral salt, after heating under alkaline condition, drying, the pressurization, proteinic Denaturation takes place, thereby make active sludge resin (claiming albumin glue again), make it to be pressed into sheet material with the useless fiber of bleaching, skimming treatment.Its quality is better than the standard of three grades of hardboards of country.
The mud landfill has two kinds of made ground and marine reclamation lands.Sludge digestion is after landfill is carried out in dehydration again is the mode of often taking in domestic many large-scale wastewater treatment plants at present, reduce through postdigestive mud organic substance content, stable performance, cumulative volume reduces, and doing the landfill disposal after the dehydration is a kind of both economical processing mode.Because slaking apparatus complex process, one-time investment are big, the operation difficulty is big, practical operating experiences shows and often is difficult to get a desired effect.Moreover the dewatered sludge water ratio is much higher than desired 30% water ratio of common life garbage sanitary filling field, therefore need treatedly more just can send the household refuse landfill sites landfill; Special-purpose sludge landfill perhaps is set, carries out special landfill, but this method has that occupation of land is big, addressing is obstructed and has shortcoming such as secondary pollution hidden danger according to factors such as the water ratio of mud and mechanical characteristics.The operational requirement of mud landfill is similar to garbage loading embeading.The percolate of sludge landfill belongs to high concentration organic sewage, must concentrate and be handled; Should establish fence around the sludge landfill, and take accordingly anti-mosquitos and flies, ratproofing, the mud of undried burning disposal, suitable layering landfill on a small scale, raw sludge mud layer thickness is answered＜0.5m, digested sludge mud layer thickness should be not more than 3m, the sanding soil layer is 0.5m above the mud layer, the landfill that hockets each other, and breather is set, during the sludge burning ash residue landfill, can not stratified landfill.The mud marine reclamation land, should observe following requirement: 1. must establish bank protection, infiltration also must be concentrated and be handled, in case mud and sewage pollution seawater; 2. the heavy metal content in mud or the lime-ash should meet the marine reclamation land standard.
Throw the sea: the coastland, especially have near great river, the great river estuario, can consider raw sludge, digested sludge, dehydrated sludge cake or incineration residue are thrown the sea.Throw the mud that extra large mud preferably passes through digestion process.Throw extra large mode available pipe and carry or shipping, wherein pipe-line transportation is comparatively economical.Before mud is thrown the enforcement of maritime works's journey, must do to throw the selection (beyond the bank 10km off sea, about depth of water 25m) in sea area well, to guarantee the dilution and the self-purification of seawater.
In a word, comprehensive utilization will be the main mode of sludge disposal from now on.It is many in taking up an area of to fill out reason, and the potential source biomolecule availability is low, but the percolate polluted underground water, problems such as subsequent disposal overhead charges height, application is restricted.Ocean dumping is under an embargo in sea law.The moisture percentage in sewage sludge height, nearly more than 80%, this part shipwreck to be burning, and transportation cost is increased, and floor space increases during stacking.Microorganism, pathogenic agent content height do not add processing in the mud, directly use or throw aside, and can work the mischief to environment.The mud contaminate environment is discharged a large amount of greenhouse gases simultaneously, contains heavy metal simultaneously, does not use or enter food chain, entail dangers to HUMAN HEALTH if do not add control.
Summary of the invention
The present invention has provided a kind of treatment system of dewatered sludge in order to overcome the above problems.
The treatment system of a kind of dewatered sludge of the present invention comprises mud preprocessing part, anaerobically fermenting part, gas processing part and hot spots; Wherein:
Described mud preprocessing part comprises clean water basin, mud water pipe, mud initial adjustment pond, mud accurate adjustment pond, fire-water pond; Described mud initial adjustment pond links to each other by pipeline with mud accurate adjustment pond; Described mud water pipe links to each other by pipeline with mud initial adjustment pond; Described clean water basin mud initial adjustment pond, mud accurate adjustment pond respectively link to each other by pipeline; Described fire-water pond links to each other by pipeline with clean water basin; The vapour line of the boiler of described hot spots links to each other with mud accurate adjustment pond;
Described anaerobically fermenting partly comprises biological reactor, Qinghua mud Buffer Pool; The mud accurate adjustment pond of described mud preprocessing part links to each other by pipeline with the biological reactor of anaerobically fermenting part; The outer ring of described biological reactor is around warm water tube, and described warm water tube links to each other with the boiler of hot spots; Described biological reactor links to each other with Qinghua mud Buffer Pool;
Described gas processing partly comprises foam removal separator, digester, gas blower, decarbonization system, bleeding device; Described foam removal separator links to each other by pipeline with the biological reactor of anaerobically fermenting part; Described foam removal separator links to each other by pipeline with digester, is gas blower between described foam removal separator and the digester; Described digester links to each other with decarbonization system with bleeding device by pipeline respectively; Described digester links to each other with the boiler of hot spots;
Described hot spots is a boiler.Described hot spots is that boiler is combustion gas/fuel oil boiler for dual purpose.
Described biological reactor is a spiral crimping tank body.
The present invention is compared with prior art: have advantages such as energy-conserving and environment-protective, energy utilization rate height, developing new forms of energy, effectively solved the difficult problem of sludge treatment.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention.
Embodiment
Fig. 1 is the structural representation of the treatment system of a kind of dewatered sludge of the present invention, and affiliated dewatered sludge treatment system comprises mud preprocessing part, anaerobically fermenting part, gas processing part and hot spots; Wherein:
Described mud preprocessing part comprises clean water basin 1, mud water pipe 2, mud initial adjustment pond 3, mud accurate adjustment pond 4, fire-water pond 5; Described mud initial adjustment pond 3 and mud accurate adjustment pond 4 link to each other by pipeline; Described mud water pipe 2 and mud initial adjustment pond 3 link to each other by pipeline; Described clean water basin 1 mud initial adjustment pond 3, mud accurate adjustment pond 4 respectively link to each other by pipeline; Described fire-water pond 5 and clean water basin 1 link to each other by pipeline; The vapour line of the boiler 6 of described hot spots links to each other with mud accurate adjustment pond 4;
Described anaerobically fermenting partly comprises biological reactor 7; The biological reactor 7 of the mud accurate adjustment pond 4 of described mud preprocessing part and anaerobically fermenting part links to each other by pipeline; The outer ring of described biological reactor 7 is around warm water tube, and described warm water tube links to each other with the boiler 6 of hot spots;
Described gas processing partly comprises foam removal separator 24, digester 21, gas blower 27, decarbonization system 23, bleeding device 22; The biological reactor 7 of described foam removal separator 24 and anaerobically fermenting part links to each other by pipeline; Described foam removal separator 24 and digester 21 link to each other by pipeline, are gas blower 27 between described foam removal separator 24 and the digester 21; Described digester 21 links to each other with decarbonization system 23 with bleeding device 22 by pipeline respectively; Described digester 21 links to each other with the boiler 6 of hot spots;
Described hot spots is a boiler 6.Described hot spots is that boiler 6 is combustion gas/fuel oil boiler for dual purpose.
Described biological reactor 7 is a spiral crimping tank body.
The above; only be the preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (3)
1. the treatment system of a dewatered sludge is characterized in that: described dewatered sludge treatment system comprises mud preprocessing part, anaerobically fermenting part, gas processing part and hot spots; Wherein:
Described mud preprocessing part comprises clean water basin (1), mud water pipe (2), mud initial adjustment pond (3), mud accurate adjustment pond (4), fire-water pond (5); Described mud initial adjustment pond (3) links to each other by pipeline with mud accurate adjustment pond (4); Described mud water pipe (2) links to each other by pipeline with mud initial adjustment pond (3); Described clean water basin (1) mud initial adjustment pond (3), mud accurate adjustment pond (4) respectively link to each other by pipeline; Described fire-water pond (5) links to each other by pipeline with clean water basin (1); The vapour line of the boiler of described hot spots (6) links to each other with mud accurate adjustment pond (4);
Described anaerobically fermenting partly comprises biological reactor (7); The mud accurate adjustment pond (4) of described mud preprocessing part links to each other by pipeline with the biological reactor (7) of anaerobically fermenting part; The outer ring of described biological reactor (7) is around warm water tube, and described warm water tube links to each other with the boiler (6) of hot spots;
Described gas processing partly comprises foam removal separator (24), digester (21), gas blower (27), decarbonization system (23), bleeding device (22); Described foam removal separator (24) links to each other by pipeline with the biological reactor (7) of anaerobically fermenting part; Described foam removal separator (24) links to each other by pipeline with digester (21), is gas blower (27) between described foam removal separator (24) and the digester (21); Described digester (21) links to each other with decarbonization system (23) with bleeding device (22) by pipeline respectively; Described digester (21) links to each other with the boiler (6) of hot spots;
Described hot spots is boiler (6).
2. the treatment system of dewatered sludge according to claim 1, it is characterized in that: described hot spots is that boiler (6) is combustion gas/fuel oil boiler for dual purpose.
3. the treatment system of dewatered sludge according to claim 1, it is characterized in that: described biological reactor (7) is a spiral crimping tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020192022XU CN201686599U (en) | 2010-05-11 | 2010-05-11 | Dewatering sludge treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201020192022XU CN201686599U (en) | 2010-05-11 | 2010-05-11 | Dewatering sludge treatment system |
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| CN201686599U true CN201686599U (en) | 2010-12-29 |
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| CN201020192022XU Expired - Lifetime CN201686599U (en) | 2010-05-11 | 2010-05-11 | Dewatering sludge treatment system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351391A (en) * | 2011-09-13 | 2012-02-15 | 大连力达环境工程有限公司 | Dewatered sludge anaerobic digestion pretreatment process and system |
| CN102424508A (en) * | 2011-10-28 | 2012-04-25 | 广西博世科环保科技股份有限公司 | Sludge pyrolytic digestion process for efficiently recovering heat energy and equipment thereof |
| CN104402187A (en) * | 2014-08-07 | 2015-03-11 | 胡延节 | Combined facility for making sludge synthetic fuel |
-
2010
- 2010-05-11 CN CN201020192022XU patent/CN201686599U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351391A (en) * | 2011-09-13 | 2012-02-15 | 大连力达环境工程有限公司 | Dewatered sludge anaerobic digestion pretreatment process and system |
| CN102351391B (en) * | 2011-09-13 | 2013-06-19 | 大连力达环境工程有限公司 | Dewatered sludge anaerobic digestion pretreatment process and system |
| CN102424508A (en) * | 2011-10-28 | 2012-04-25 | 广西博世科环保科技股份有限公司 | Sludge pyrolytic digestion process for efficiently recovering heat energy and equipment thereof |
| CN104402187A (en) * | 2014-08-07 | 2015-03-11 | 胡延节 | Combined facility for making sludge synthetic fuel |
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Granted publication date: 20101229 |