CN103629659A - Process for producing heat by wastewater and biomass - Google Patents
Process for producing heat by wastewater and biomass Download PDFInfo
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- CN103629659A CN103629659A CN201310681120.8A CN201310681120A CN103629659A CN 103629659 A CN103629659 A CN 103629659A CN 201310681120 A CN201310681120 A CN 201310681120A CN 103629659 A CN103629659 A CN 103629659A
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention relates to a process for producing heat by wastewater and biomass. According to the process, wastewater is treated to serve as water for a boiler; sludge, biomass and oil sludge produced in the wastewater treatment process are mixed to serve as a fuel to heat the boiler to generate steam or hot water. The boiler adopted by the process can take the traditional coal or gas as the fuel, can take the sludge, biomass and oil sludge mixture as the fuel, and also can take various fuels. By the process, a great amount of wastewater is fully utilized, water resources are saved, regional chemical oxygen demand and the discharge of ammonia nitrogen are reduced, rich biomass resources and urban garbage in China are utilized, the environment is protected, and the process is suitable for vast rural areas, medium and small towns, industrial parks and industrial enterprises.
Description
Technical field
The present invention relates to waste water reclaiming technical field, be specifically related to the technique that steam or hot water are produced in a kind of waste water and biomass comprehensive utilization.
Background technology
Be accompanied by urbanization degree and accelerate, water consumption increases, displacement growth simultaneously, and to the demand of sewage disposal also increasing thereupon, in order to alleviate, water resource is nervous sets up sewage treatment plant in succession with improvement sewage especially in each big city.In the face of urban water and the water pollution control of growing tension, city domestic sewage treatment plant has also accelerated pace of construction, expands to a certain extent the utilization of regenerated water source, alleviates water resource nervous, but also needs advanced treating, comprehensive utilization.
Aspect sanitary sewage and advanced treatment of industrial waste water utilize, all there is application both at home and abroad.
The technology history of existing more than 20 years of reuse thermal recovery boiler after the U.S., Canada utilize thick-oil waste water to process, from technological process (comprising waste liquid and useless mud treatment process), equipment, automatic control, there is complete supporting technology, have ripe operating experience, production practices have proved its reliability, practicality and economic benefit.Certain oil field is to thick-oil waste water advanced treatment and reclamation in thermal recovery boiler, and its main technique is: adjusting and buffering → swash plate oil removing → flotation → filtration → and softening, now build daybreak tetrad 8000m
31 of the waste water advanced treating stations of/d and a hollow 6000m
31 of the waste water advanced treating stations of/d, substantially can realize thick-oil waste water and be back to thermal recovery boiler.
Tianjin company, by living area, huge port municipal wastewater advanced treatment and reclamation, sells the one-level demineralized water through advanced treating to Plant of Tianjin Petrochemical Company.Comprise pretreatment, deep desalting equipment and conveyance system.Main technique is: more medium filter → ozone-active carbon filtration → ultrafiltration → first-stage reverse osmosis → two-pass reverse osmosis → mixed bed.Treatment scale is 30,000 m
3/ d, saves fresh water consumption 600～8,000,000 m
3/ a, the discharge of to a certain degree having subdued regional chemistry oxygen demand, ammonia nitrogen.
CN102452749A discloses the technique that a kind of iron and steel enterprise sewage high conversion is prepared demineralized water, and this technological process comprises sewage treatment unit, pretreatment unit, reverse osmosis deaslination processing unit.At sewage treatment unit, pretreatment unit, remove a large amount of polluters to reverse osmosis membrane, at reverse osmosis units, adopt tertiary treatment process, by I and II counter-infiltration, carry out desalting processing, part finished product water directly enters product water tank, another part strong brine carries out desalting processing again through three grades of counter-infiltrations, thereby has effectively realized iron and steel enterprise's sewage recycling and sewage " zero-emission ".
Living beings be exactly in organic matter except fossil fuel, all renewable materials that derive from plant, animal and microorganism.Tellurian biomass resource is very abundant, and the nearly 1730 Yi Dun， China of dry living beings annual production that the whole world produces through photosynthesis is every year more than 50 hundred million tons of dries, is equivalent to 2.5 times of year power consumption total amount; In addition, the volume of cargo in storage over the years of China's rubbish reaches 6,000,000,000 tons, and it is example that rubbish annual production surpasses 1 hundreds of millions Dun，Yi Beijing, and present daily output domestic waste is 15000 tons of left and right, and daily output municipal sludge, 4000 tons of left and right, also has medical waste quantity uncertain.Wherein 37.5% be the biomass energy that can make fuel utilization.According to Chinese environmental protection Bu He relevant department, add up, to " 12 " end, there are the 1000 Duo Ge sewage treatment plants in more than 600 city in the whole nation, produce mud per year and reach more than 6,000 ten thousand tons, wherein about only 20%, obtain processing and utilizing timely and effectively, all the other great majority are selected landfill disposal, hide some dangers for to the safety of water environment.The current trans-utilization rate less than 10% of China's biomass energy, has over half burnt in vain or discarded in annual nearly 700,000,000 tons of agricultural wastes, not only contaminated environment, has also caused huge waste.How efficiently utilizing biomass energy is a problem anxious to be resolved.Country has released living beings and has utilized policy support direction for this reason, mainly contains: (1) biomass power generation key technology and generating pretreatment of raw material technology; (2) the fine and close machine-shaping technology of biomass solid fuel; (3) biomass solid fuel efficient burning technology; (4) gasification of biomass and liquefaction technology; (5) non-grain biological liquid fuel production technology; (6) big-and-middle-sized biomass energy utilization technologies.
As far back as 19th-century, European countries have just started the utilization of biomass energy, recognize that living beings can not only be used as a kind of energy, can also improve burning of coal performance, and develop biomass coal for local ature of coal.W02007089046 is by the direct mixed-forming of the powdered biomass of coal and 5%; KR850001738B utilizes hexamethyl tetramine, oxidant, combustion adjuvant, sawdust, biomass char, mud coal, mud coal Jiao to be mixed, and then on its surface, is coated with watertight composition or paraffin, belongs to direct utilization; JP3052994 is mainly the slag that utilizes living beings wood chip, sweet waste slag or cotton seed oil expression to produce, and sulphur-fixing agent white lime, finally at top layer paraffine or heavy oil; US4225457 and US4152119 utilize organic solid rubbish, especially domestic waste or living beings to mix with coal, and its binding agent is mainly with downflow sludge, black liquid, sugary binding agent, discarded oil and starch.
In China, living beings are more late for shaped coal technology research, but development is very fast.In CN1908135A, binding agent is mainly used the zymotic fluid of flour, wheat bran, starch, and living beings add 8～20% with dry powder form; CN1309166A is mainly used crop stalk, forestry processing waste, domestic waste, and its proportioning can be up to 40～100%; CN1793297A and CN1793298A, mainly used the straw binding agent of 14～20% 3mm left and right; CN1424386A mainly utilizes straw, leaf, weeds and the biogum of pulverizing; CN1033833A is used rice husk and modified starch as ignition layer of moulded coal; CN1368542A is used black liquid to make binding agent; CN1952086A is mainly the amylofermentation agent of crop stalk, weeds, leaf powder and the 15-20% of interpolation 5～30%.CN1858165A discloses a kind of biomass composite fuel and manufacture method thereof, and it is mixed and formed by biomass fuel, coal fuel and sulphur-fixing agent.CN1699525A discloses a kind of straw pavilion synthetizing solid fuel and processing technology thereof.
Nineteen ninety-five builds up a domestic unique plant-scale biomass coal and produces demonstration plant in Linyi, Shandong, actual is annual production 10000 t, but exists the problems such as boiler tries to burn not thoroughly in burning, flue dust is large, the normally production run of biomass boiler briquette production line.According to plan, after the year two thousand twenty, annual 5000 Wan Dunjie pavilion rod-shaped compact formed fuels can increase straw pavilion income from sales more than 6,000,000,000 yuans for peasant, after the year two thousand twenty, utilize 5000 Wan Dunjie pavilion rod-shaped compact formed fuels approximately alternative 4,000 ten thousand tons of coals every year, after burning, approximately can reduce discharge CO
28000 ten thousand tons, reduce discharge SO
2200000 tons, reduce 600,000 tons of discharge flue dust, reduce 1,500 ten thousand tons of lime-ash discharges, increase fertile 5,000,000 tons of high-quality bait.
About biomass boiler, have mature technology both at home and abroad.CN1070038A has announced method and the boiler plant of circulation in a kind of differential, and the difference according to different gas speed to particle carrying capacity, realizes interior circulation by three different gas velocity areas are set in combustion chamber.CN1041646A has announced a kind of composite circulation fluidizing bed boiler, bottom, combustion chamber is spill, and dividing plate is set in combustion chamber, rely on particle to form interior circulation in the overflow of emulsion zone, heat convection part is set in free space, in heat convection face portion, baffle plate is set, separating particles simultaneously, particle after separation is sent main chamber back to by auger, by the overflow of emulsion zone and the mechanism of auger, forms interior circulation.EP0332360A1 has announced a kind of fluidized-bed reactor and method of operating thereof, major and minor two reactors are set in this device, material level between major and minor reactor has certain discrepancy in elevation, the particle that auxiliary reactor circulates and separates in collecting, by " L " valve, return to main reactor, its essence can be regarded as Yi Gejiang outer circulation mechanism and transfers to the interior circulation forming in combustion chamber, complex structure.
About gasification of biomass, biomass-making methyl alcohol, biomass hydrogen preparation etc., all there is patent.CN1323871A discloses a kind of method that plant straw is produced coal gas, i.e. coal burning heat release and plant straw cracking gas-producing carry out in same producer.First be coal in stove internal combustion and heat energy is put aside in the bed of material, then send into plant straw, it is directly contacted with high temperature coal, and produce cracking under isolated air condition.CN1362393A discloses a kind of method of utilizing biological material to prepare methyl alcohol, and the method can effectively utilize produced carbon monoxide and not reduce the standby efficiency of Methanol.Prepare in the method for methyl alcohol utilizing biological material, comprise that gasified bio-matter is with generation gas with by the gas generation methyl alcohol being produced, the water electrolysis equipment driving by electric energy carrys out brine electrolysis, described electric energy is from energy of the sun generating equipment or wind power plant, and the hydrogen being produced by water electrolysis is offered to unstripped gas, the at least twice of the CO content that causes amounts of hydrogen to be adjusted to comprise in produced gas is prepared methyl alcohol thus in methyl alcohol synthetic reactor.CN101158312A discloses a kind of method of utilizing biomass power generation, the method is to utilize gasification technology, agriculture and forestry organic waste material, comprise that useless stalk, wood chip, straw, rice husk, bagasse etc. are converted to by gasification installation the fuel gas that approaches coal gas, these combustible gases are after gas cleaning plant removes dust and tar, deliver in gas internal combustion engine or gas turbine again and generate electricity, the high-temperature tail gas that internal combustion engine or gas turbine are discharged is further used for heating waste heat boiler and produces steam-electric power by steam turbine.CN101200644A discloses a kind of equipment that utilizes continuous distillation of plant biomass to produce tar, utilizes continuous distillation of plant biomass to produce tar, makes the full and uniform destructive distillation of material, not only can save the energy, and can reduce the pollution to environment.CN1458058A discloses a kind of method that living beings are produced hydrogen-containing gas, that the living beings of pulverizing, additive and water are added in high-pressure reactor by the weight ratio of 1:1～1.5:5～15, under nitrogen atmosphere, the heating rate intensification with 10～20 ℃/min, makes reaction temperature reach 300～700 ℃, reaction pressure reaches after 10～50MPa, react 1～60 minute, be cooled to room temperature, gas-liquid product carries out separation, gas is Gas Mixtures Containing Hydrogen, and liquid is bio-oil.
Although living beings utilize technology a lot of at present, comparatively ripe and simple is moulding burning at present, so the present invention mainly considers standardized biomass moulding combustion technology.
Summary of the invention
The object of the invention is to the problem existing for prior art, proposed a kind of waste water and living beings heat production technique.The invention provides wastewater treatment is become to qualified boiler feed water, by living beings, as fuel or main fuel, produce the composite technology of electric power, steam or hot water.The biomass boiler that the present invention adopts both can take that the mud, the organic wastewater that produce in wastewater treatment process directly mix with living beings, greasy filth or mixed-forming is fuel, can take again traditional fossil fuel coal or combustion gas is fuel, also can be above pluralities of fuel simultaneously as fuel, make the boiler can stable operation.
Although waste water advanced process for producing boiler demineralized water technology and biomass combustion boiler and moulding combustion technology successful Application, not yet have the precedent that the two is combined to application, and biomass boiler is not strong to the adaptability of pluralities of fuel.
For reaching this object, the present invention by the following technical solutions:
Waste water and a living beings heat production technique, described technique is treated as boiler feed water using waste water; The mud producing in wastewater treatment process mixes with living beings as fuel heating boiler, produces steam or hot water.
The steam or the hot water that produce can be used for cities and towns, industrial heating or power supply.
Described waste water comprises sanitary wastewater and/or industrial wastewater.Indication waste water of the present invention can be sanitary wastewater, can be also industrial wastewater, or the composite waste of sanitary wastewater and industrial wastewater composition.
The processing of described waste water comprises wastewater preprocessing process and wastewater deep treatment process, and described advanced treating comprises waste water desalination, deoxygenation processing, to reach the standard of boiler feed water.
Waste water treatment process of the present invention mainly contains the water technology combinations such as adjusting, filtration, ultrafiltration, biochemistry, coalescent, air supporting, advanced oxidation, magnetic treatment, electric flocculation, electro-catalysis, interior electrolysis, photochemical catalytic oxidation, counter-infiltration, EDI, electrodialysis, ion-exchange, mixed bed.Concrete combination is in optimized selection according to the type of waste water and composition, makes every effort to the optimization of investment and operation cost.Water after processing should meet boiler feed water water quality, and specific targets are as follows:
| Project | Index |
| Dissolved oxygen (mg/L) | ≤0.05 |
| Total hardness is (with CaCO 3Meter) (mg/L) | ≤0.1 |
| Total iron (mg/L) | ≤0.05 |
| Silica (mg/L) | ≤50 |
| Suspension (mg/L) | ≤2 |
| Total alkalinity is (with CaCO 3Meter) (mg/L) | ≤2000 |
| Oil and fat (mg/L) (suggestion does not comprise dissolved oil) | ≤2 |
| Salinity (mg/L) | ≤7000 |
| PH value | 7.5～11 |
The organic wastewater producing in described wastewater treatment process is also as the part of fuel.
Living beings of the present invention comprise the mixture of a kind of in agricultural crop straw, forestry products processing refuse or domestic waste or at least two kinds.
In described fuel, also comprise greasy filth; Preferably, described greasy filth is after pretreatment as the part of fuel.Described greasy filth is such as selecting tar mud of Oilfield Refinery greasy filth, coke-oven plant etc.The processing method of greasy filth of the present invention can be selected by those skilled in the art from prior art.
Described mud, living beings and greasy filth directly as after fuel or moulding as fuel.During biomass moulding, add chlorine-solidifying agent, sulphur-fixing agent etc.
In the present invention, can be living beings separately as fuel, can be also the mixing of multiple living beings as fuel, can also be the mixed-forming fuel of living beings and fossil fuel.Biomass granule fuel has sulfur content, nitrogen content, ash content far below the environmental-protecting performance advantage of coal.Biomass fuel should meet the target criteria that country supports, as follows with reference to project: (1) biomass power generation key technology and generating pretreatment of raw material technology: to comprise direct combustion (mixed combustion) electricity generation system coupling technique, steam heat recovery technology, the thermal efficiency>=85%, not slagging scorification of combustion process, do not produce new pollution, there is the biomass direct combustion power generation device of extensive adaptability to raw material; Can guarantee living beings clean-burning raw material handling, conveying technology in combustion apparatus, effectively preconditioning technique of the corrosive substances such as Cl in separating biomass etc.; (2) the fine and close machine-shaping technology of biomass solid fuel: the process energy consumption of ton shaped fuel is lower than 80Kwh/t, shaped fuel density 1～1.4g/cm
3, moisture is less than 12%, the biomass compact machine-shaping technology of process mechanization and automation.Comprising that wood fibre grinds cuts overlapping technology, forming panel designing technique, the system, coupled technology of integrated, removable granular fuel production equipment etc.; (3) biomass solid fuel efficient burning technology: the thermal efficiency>=85%, not slagging scorification, waste gas meet the biomass solid fuel efficient burning technology of discharge standard and device etc.; (4) biomass gasification technology: the system optimization coupling of high conversion pyrolytic gasification, pyrolytic process process conditions and control, the processing of coercibility organic matter (tar) high-efficient purification, biomass gasification process liquid, solid product comprehensive utilization technique and device, gasification of biomass efficiency>=70%; Fuel gases calorific value>=5.0MJ/Nm
3; Coercibility organic matter≤10mg/Nm in combustion gas
3.Efficient anaerobic fermentation, organic fertilizer production, non-wastewater discharge technology and device, organic waste factor of created gase >=200L/Kg.
Boiler of the present invention adopts and is applicable to the boiler dedicated of biomass combustion, this boiler both can be with normal fuel as natural gas, coal, fuel wet goods fossil fuel, also can living beings be fuel, all right greasy filth, combustion gas, living beings are as associating operating fuel, so just guaranteed that device can steady and continuous operation, institute's heat production or electric stable supply.
Flue gas qualified discharge after dedusting, waste heat recovery, desulphurization denitration that boiler produces.
The waste residue producing after fuel combustion is as potash fertilizer or building materials raw material.
A kind of waste water of the present invention and living beings heat production technique, described technique specifically comprises the following steps:
(1) by waste water after pretreatment, advanced treating, as boiler demineralized water;
(2) mud producing in wastewater treatment process, organic wastewater are directly mixed with living beings, greasy filth or mixed-forming after as fuel heating boiler, produce steam or hot water;
(3) the flue gas qualified discharge after dedusting, waste heat recovery, desulphurization denitration after burning;
(4) waste residue after burning is used as potash fertilizer or building materials.
Compare with prior art scheme, the present invention has following beneficial effect:
The present invention combines the utilization of wastewater treatment and biomass energy, directly produces for life or industrial steam or hot water such as heating, generating, heating.Both saved water resource, reduced the discharge capacity of regional chemistry oxygen demand and ammonia nitrogen, the mud that has simultaneously also utilized wastewater treatment to produce, mud directly can be mixed with living beings such as rubbish, agricultural crop straws or mixed-forming after as boiler oil, reduced the processing links of mud, greasy filth can have been processed, the heat producing and electricity can be used for again the energy of wastewater treatment simultaneously, realized the cyclic utilization of waste, country-driven urbanization has been had to important practical value.
Accompanying drawing explanation
Fig. 1 is waste water and the living beings heat production process chart described in the embodiment of the present invention 1;
Fig. 2 is waste water and the living beings heat production process chart described in the embodiment of the present invention 2.
Below the present invention is described in more detail.But following example is only simple and easy example of the present invention, does not represent or limit the scope of the present invention, and protection scope of the present invention is as the criterion with claims.
The specific embodiment
Below in conjunction with accompanying drawing and by the specific embodiment, further illustrate technical scheme of the present invention.
For the present invention is described better, be convenient to understand technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows:
Embodiment 1
As shown in Figure 1, a kind of waste water and living beings heat production technique, described processing step is as follows:
(1) by sanitary wastewater after Wastewater Pretreatment unit, waste water advanced processing unit processes, as boiler demineralized water;
(2) after the organic wastewater that mud, Wastewater Pretreatment and the waste water advanced processing that Wastewater Pretreatment produces produces and living beings mixed-forming, as fuel heating boiler, produce steam or hot water, for cities and towns, generate electricity or heat supply; Greasy filth after pretreatment also can be directly or is participated in after moulding the part as fuel; A part for living beings can directly be burnt.In boiler oil, can also comprise combustion gas and other solid fuels;
(3) the flue gas qualified discharge after dedusting, waste heat recovery, desulphurization denitration after burning;
(4) waste residue after burning is used as potash fertilizer or building materials.
In the present embodiment, waste water treatment process can be selected more medium filter → ozone → activated carbon filtration → ultrafiltration → first-stage reverse osmosis → two-pass reverse osmosis → mixed bed.
Fuel forming technique can be: living beings pulverizing+sulphur-fixing agent+chlorine-solidifying agent+combustion adjuvant+binding agent+mud+greasy filth, extrusion forming.
Described living beings comprise agricultural crop straw, forestry products processing refuse and domestic waste.
Embodiment 2
As shown in Figure 2, a kind of waste water and living beings heat production technique, described processing step is as follows:
(1) by industrial wastewater after Wastewater Pretreatment unit, waste water advanced processing unit processes, as boiler demineralized water;
(2) after the organic wastewater that mud, Wastewater Pretreatment and the waste water advanced processing that Wastewater Pretreatment produces produces and living beings mixed-forming, as fuel heating boiler, produce steam or hot water, for cities and towns, generate electricity or heat supply; Greasy filth after pretreatment also can be directly or is participated in after moulding the part as fuel; A part for living beings can directly be burnt.In boiler oil, can also comprise combustion gas and other solid fuels;
(3) the flue gas qualified discharge after dedusting, waste heat recovery, desulphurization denitration after burning;
(4) waste residue after burning is used as potash fertilizer or building materials.
In the present embodiment, waste water treatment process can be selected adjusting → coagulation → more medium filter → ozone → activated carbon filtration → ultrafiltration → first-stage reverse osmosis → two-pass reverse osmosis → tri-grade counter-infiltration → mixed bed.
Fuel forming technique can be: living beings pulverizing+sulphur-fixing agent+chlorine-solidifying agent+combustion adjuvant+binding agent+mud+greasy filth, extrusion forming.
Described living beings comprise agricultural crop straw, forestry products processing refuse and domestic waste.
Applicant's statement, the present invention illustrates technique of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned processing step, does not mean that the present invention must rely on above-mentioned processing step and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to the selection of the interpolation of the equivalence replacement of the selected raw material of the present invention and auxiliary element, concrete mode etc., within all dropping on protection scope of the present invention and open scope.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characterictic described in the above-mentioned specific embodiment, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible combinations.
In addition, between various embodiment of the present invention, also can be combined, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. waste water and a living beings heat production technique, is characterized in that, described technique is treated as boiler feed water using waste water; The mud producing in wastewater treatment process mixes with living beings as fuel heating boiler, produces steam or hot water.
2. technique as claimed in claim 1, is characterized in that, described waste water comprises sanitary wastewater and/or industrial wastewater.
3. technique as claimed in claim 1 or 2, is characterized in that, the processing of described waste water comprises wastewater preprocessing process and wastewater deep treatment process, and described advanced treating comprises waste water desalination, deoxygenation processing.
4. the technique as described in one of claim 1-3, is characterized in that, the organic wastewater producing in described wastewater treatment process is also as the part of fuel.
5. the technique as described in one of claim 1-4, is characterized in that, described living beings comprise the mixture of a kind of in agricultural crop straw, forestry products processing refuse or domestic waste or at least two kinds.
6. the technique as described in one of claim 1-5, is characterized in that, also comprises greasy filth in described fuel; Preferably, described greasy filth is after pretreatment as the part of fuel.
7. the technique as described in one of claim 1-6, is characterized in that, the mud producing in described wastewater treatment process, living beings and greasy filth directly as after fuel or moulding as fuel.
8. the technique as described in one of claim 1-7, is characterized in that, flue gas qualified discharge after dedusting, waste heat recovery, desulphurization denitration that boiler produces.
9. the technique as described in one of claim 1-8, is characterized in that, the waste residue producing after fuel combustion is as potash fertilizer or building materials raw material.
10. the technique as described in one of claim 1-9, is characterized in that, described technique comprises the following steps:
(1) by waste water after pretreatment, advanced treating, as boiler demineralized water;
(2) mud producing in wastewater treatment process, organic wastewater are directly mixed with living beings, greasy filth or mixed-forming after as fuel heating boiler, produce steam or hot water;
(3) the flue gas qualified discharge after dedusting, waste heat recovery, desulphurization denitration after burning;
(4) waste residue after burning is used as potash fertilizer or building materials.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819468A (en) * | 2015-04-30 | 2015-08-05 | 湖南屎壳郎环境科技有限公司 | Constant pressure boiler for incinerating diseased livestock and poultry as well as garbage by straws to generate hot water and method thereof |
| CN105948337A (en) * | 2016-07-08 | 2016-09-21 | 光大生物能源(含山)有限公司 | Treatment device and process for water for power generation of biomass fuel |
| CN106398798A (en) * | 2015-08-03 | 2017-02-15 | 林知谚 | Method for preparing biomass fuel from biological sludge |
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| CN106398798B (en) * | 2015-08-03 | 2019-09-27 | 林知谚 | The method that raw matter fuel is made in biological sludge |
| CN105948337A (en) * | 2016-07-08 | 2016-09-21 | 光大生物能源(含山)有限公司 | Treatment device and process for water for power generation of biomass fuel |
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