CN107473781A - A kind of organic fertilizer prepared with waste liquid and its method for preparation - Google Patents
A kind of organic fertilizer prepared with waste liquid and its method for preparation Download PDFInfo
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- CN107473781A CN107473781A CN201710553133.5A CN201710553133A CN107473781A CN 107473781 A CN107473781 A CN 107473781A CN 201710553133 A CN201710553133 A CN 201710553133A CN 107473781 A CN107473781 A CN 107473781A
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- waste liquid
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F5/00—Fertilisers from distillery wastes, molasses, vinasses, sugar plant or similar wastes or residues, e.g. from waste originating from industrial processing of raw material of agricultural origin or derived products thereof
- C05F5/006—Waste from chemical processing of material, e.g. diestillation, roasting, cooking
- C05F5/008—Waste from biochemical processing of material, e.g. fermentation, breweries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
- B65B63/08—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for heating or cooling articles or materials to facilitate packaging
Abstract
This application discloses a kind of organic fertilizer prepared with waste liquid and its method for preparation, solve caused high-concentration acidic wastewater after sweet sorghum production alcohol to give up mash process problem, to prepare the useless mash that industrial alcohol formed as raw material by the use of sweet sorghum stalk, methods described comprises the steps of the waste liquid：Activated sludge in sewage disposal process is subjected to dewater treatment, moisture percentage in sewage sludge is reached 85%~90%, the activated sludge PH scopes are 5.5~8.5；The useless mash is evaporated processing, solid content is reached 55%；The activated sludge and the useless mash are pressed 1:50 are configured to mixed liquor；Processing is dried in the mixed liquor.The application provides method and reduces cost of sewage disposal, reduces later stage Environmental Inputs, high stable, low energy consumption, turns waste into wealth, and improves the value of the useless mash of sugar grass, increases productivity effect.
Description
Technical field
The invention belongs to sewage treatment area, more particularly to a kind of changing waste into resources, the method that organic fertilizer is prepared with waste liquid.
Background technology
It is a kind of non-grain crop that sugar grass, which makees, as the raw material of production alcohol fuel, is opened newly for development clean energy resource
Road, but the high-concentration acidic wastewater after its production alcohol gives up, the soluble solids of mash is high, organic matter is high, waste liquid COD
CODcr and biochemical oxygen demand (BOD) BOD5 are high, bring very big difficulty to follow-up environmental protection treatment, such as：Acidity, follow-up equipment loss are serious；
COD contents are high, easily anaerobic reactor is impacted, etc..This high-concentration sewage is nontoxic, but at traditional biochemistry
Reason is unable to reach national emission request, and processing cost is very high, the process problem for how solving useless mash, is to govern sweet tea height
Fine strain of millet cane production alcohol fuel realizes the key technical problems of industrialization.
The content of the invention
In view of this, to solve the useless mash process problem of the high-concentration acidic wastewater after sweet sorghum production alcohol, the application is implemented
Example provides a kind of method that organic fertilizer is prepared with waste liquid.
The embodiment of the present application uses following technical proposals：
A kind of method that organic fertilizer is prepared with waste liquid, the waste liquid are to prepare industrial alcohol by the use of sweet sorghum stalk as raw material
The useless mash formed, is comprised the steps of：Activated sludge in sewage disposal process is subjected to dewater treatment, reaches moisture content
To 85%~90%, the activated sludge PH scopes are 5.5~8.5；The useless mash is evaporated processing, reaches solid content
To 55%；The activated sludge and the useless mash are pressed 1:50 are configured to mixed liquor；Processing is dried in the mixed liquor.
Preferably, the drying process is dried for spray of negative pressure.
Preferably, processing, the centrifugal drying Ta Tanei pressure mixed liquor are dried using centrifugal drying tower
For -400~0Pa, 300~350 DEG C of tower body EAT, air quantity 70000Nm3/h, the mixed liquor feed rate 5.5-
6.7m3/h。
Preferably, the method that organic fertilizer is prepared with waste liquid, in addition to trace element is added into the mixed liquor
Step.
Preferably, the evaporation process comprises the following steps：Five effect evaporations are first carried out, solid content is reached 35%；Enter again
The effect evaporation of row two, makes solid content reach 55%.
The application also proposes a kind of organic fertilizer, and the organic fertilizer uses any one embodiment methods described system of the present invention
Into.
The application also includes a kind of organic fertilizer packing method, for made of the application any one embodiment methods described
Organic fertilizer, it is characterised in that organic fertilizer package temperature≤45 DEG C.
Above-mentioned at least one technical scheme that the embodiment of the present application uses can reach following beneficial effect：
Reduce cost of sewage disposal, reduce later stage Environmental Inputs, high stable, low energy consumption, turn waste into wealth, improve sugar grass
The value of useless mash, increases productivity effect；Sweet sorghum stalk, which is realized, in economic, simple, efficient method produces fuel
The recycling treatment of the useless mash of ethanol, is greatly lowered integrated operation cost；The organic component content of organic fertilizer is high, can be effective
Improve soil.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding of the present application, forms the part of the application, this Shen
Schematic description and description please is used to explain the application, does not form the improper restriction to the application.
In the accompanying drawings：
Fig. 1 is a kind of embodiment flow chart for the method that organic fertilizer is prepared with waste liquid；
Fig. 2 is the embodiment flow chart of another method that organic fertilizer is prepared with waste liquid；
Embodiment
To make the purpose, technical scheme and advantage of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described corresponding accompanying drawing.Obviously, described embodiment is only the application one
Section Example, rather than whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Go out under the premise of creative work the every other embodiment obtained, belong to the scope of the application protection.
The scheme for each embodiment that the invention will now be described in detail with reference to the accompanying drawings.
Fig. 1 is a kind of embodiment flow chart for the method that organic fertilizer is prepared with waste liquid, and the waste liquid is to use sweet sorghum stalk
The useless mash that industrial alcohol formed is prepared as raw material, is comprised the steps of：
Step 101：Activated sludge in sewage disposal process is subjected to dewater treatment, make moisture content reach 85%~
90%, the activated sludge PH scopes are 5.5~8.5.
Preferably, the equipment of the dewater treatment for filtering or centrifugation apparatus, such as：Horizontal screw machine, plate and frame type filter-press, sleeping rotation
Centrifuge etc..
Table 1 be activated sludge component requirements content and actual measurement content, by after dewater treatment activated sludge carry out composition and
Content detection, selects 1 activated sludge sample, and the key instrument used includes：PH meters, 752 spectrophotometers, chromatography of ions
Instrument, gas chromatograph, day equality.Analysis project includes PH, full nitrogen, phosphorus and potassium.PH value is measured using PH meters；Nitrogen is using complete
Nitrogen detection method detects；Phosphorus is detected using phosphorus determination method；Potassium is detected using potassium assay method.
Table 1, the requirement of activated sludge component content and actual measurement content
| Composition | PH | Full nitrogen | Phosphorus | Potassium |
| Content requirement | 5.5~8.5 | / | / | / |
| Survey content | 8.07 | 19000 | 15700 | 4400 |
In step 101, the full nitrogen detection method, such as can be Kjeldahl's method, meet GB1773-1987 standards.
Sample is in the presence of catalyst, and various nitrogen-containing compounds when boiling that disappeared with the concentrated sulfuric acid are converted into ammonium nitrogen, after alkalization
The ammonia distilled is absorbed with boric acid, and sour standard liquid titration, calculate total nitrogen content is (not including nitrate nitrogen)：
Full nitrogen N (the g/kg)=c × (V-V of soil sample0)×0.014/m×1000
Wherein, in formula, c is sour concentration of standard solution, and V is standard liquid volume, V used in titration sample0To titrate blank
Standard liquid volume used, m are air-dried sample quality, and 1000 are used to be converted into every kilogram of content.Usually, parallel determinations
Represented with arithmetic mean of instantaneous value, as a result retain 2 decimals.
Preferably, the reagent of the full n2 method and process for preparation are：The concentrated sulfuric acid:ρ=1.84g/ml；Sulfuric acid standard is molten
Liquid：C=0.01mol/L, according to GB601-2002；Sodium hydroxide solution：C=400g/L；Mixed indicator：0.5g bromocresol greens
With 0.1g methyl reds, in mortar plus a small amount of 95% ethanol is ground to after all dissolvings plus 95% ethanol is to 100ml, using preceding every
Rise and add 20ml mixed indicators in boric acid solution, and aubergine (PH is about 4.5), this liquid standing time are adjusted to diluted acid or diluted alkaline
It is unsuitable long, if pH value changes in use, aubergine is adjusted at any time；Catalyst：Weigh 30g potassium sulfates, 10g
Copper sulphate is finely ground in mortar, it is necessary to is sufficiently mixed uniformly；Boric acid：2%；Methyl red indicator：0.1g methyl reds are dissolved in 95%
Ethanol, be diluted to 100ml.
Preferably, the analytical procedure of the full n2 method is：Claim sample, weigh the air-dried sample by 0.25mm aperture sieves
1.000g (is accurate to 0.0001g)；Soil sample, which disappears, is boiled, and sample is sent into dry digestion bottom of the tube, adds distilled water to moisten, addition is urged
Agent 3g, the 8ml concentrated sulfuric acids are then added, be capped (funnel)；Digest tube is placed on temperature control digesting, first heated with small fire, about
10-15 minutes, then strengthen firepower to 380 DEG C or so (voltage is no more than 200V), boil liquid and soil sample to be disappeared all are changed into canescence,
Incidentally after green, boiled a hour (about 1.5h altogether) continuing to disappear, cooling is to be distilled；The distillation of nitrogen, first press to use before distillation and say
Bright book checks azotometer, and it is empty steam about half an hour and clean pipeline, then the digest tube digested is placed on azotometer, open into
Taps is distilled, adds distilled water 20ml, then opens sodium hydroxide switch, adds 40ml sodium hydroxides, the 25ml2% in triangular flask
Boric acid-indicator mixed solution, triangular flask is placed under the adapting pipe of azotometer condenser pipe, in mouth of pipe insertion boric acid solution, is beaten
Distillation switch is driven, distillation is set as 4min；After distillation, with a small amount of distillation water washing condenser pipe end, washing lotion is taken in triangular flask,
Then titrated with sulfuric acid standard liquid.From blue-green to aubergine is just changed into, titration volumes are recorded；Blank and standard soil are done simultaneously
Sample.
In step 101, phosphorus determination method, such as-molybdenum antimony resistance colorimetric method can be extracted with sodium acid carbonate, with 0.50moL/L's
Sodium acid carbonate extracts the mixed liquor available phosphorus, and sodium acid carbonate can suppress the activity of calcium ion, makes the larger synthos of activity
It is leached out, while active ferric phosphate, aluminium salt hydrolysis can also be leached.Phosphorus in leachate secondary will not precipitate, and can use
Molybdenum antimony resistance colorimetric method determines.
Preferably, the reagent of the phosphorus determination method and solution are selected：Sodium acid carbonate (analysis is pure)；Sodium hydroxide (chemistry
It is pure)：50% (m/v) solution；Hydrochloric acid (chemistry is pure)：1+1 solution；Ammonium molybdate (analysis is pure)；Sulfuric acid (analysis is pure), tartaric acid oxygen antimony
Potassium (analysis is pure)：0.30% solution；Ascorbic acid (analysis is pure)；Potassium dihydrogen phosphate (analysis is pure)；Digestion agent (0.50mol/
LNaHCO3, PH=8.5).42.0g sodium acid carbonates (analysis is pure) are dissolved in about 800mL water, 1L is diluted to, uses sodium hydroxide
(chemistry is pure)：50% (m/v) solution is adjusted to PH=8.5, is stored in bottle；Molybdenum antimony stock solution：10.0g ammonium molybdates (analysis is pure) are molten
In about 60 DEG C of 300mL water, cooling.Separately take 8mL sulfuric acid slowly to inject in about 800mL water, stir evenly, cool down.Then by dilute sulphur
In acid injection ammonium molybdate solution, stir at any time, then add 100mL potassium antimonyl tartrates (analysis is pure)：0.30% solution, finally uses water
2L is diluted to, is contained in brown bottle.(note directly to be placed in basin container in process for preparation and cool down)；Developer：0.50g is anti-bad
Hematic acid (analysis is pure) is dissolved in 100mL molybdenum antimony stock solutions (note is now with the current)；Phosphorus standard stock solution：Claim what is dried at 105 DEG C
Potassium dihydrogen phosphate (analysis is pure) 0.4349g, is dissolved in about 200mL water, adds 5mL sulfuric acid, be transferred in 1L volumetric flasks, determined with water
Hold.Phosphorus standard working solution：By phosphorus standard stock solution with digestion agent accurate dilutions to 20 times.
It is further preferred that the analytical procedure of the phosphorus determination method is：The drafting of standard curve, in the same of measure soil sample
When, phosphorus standard working solution 0,1,2,3,4,5,6mL are drawn, is respectively put into 50mL volumetric flask, adds digestion agent 20mL, is developed the color
Agent 10mL, is slowly shaken, and scale is settled to water after carbon dioxide discharge.It is put into 1cm cuvette in light splitting light
Degree meter (wavelength is at 880nm) reading.Then using the phosphorus concentration of above-mentioned standard liquid as abscissa, corresponding absorbance is sat to be vertical
Mark and draw curve；The extraction of soil available phosphorus, the air-dried soil sample 2.50g (accurately to 0.01g) by 1mm sieves is weighed in dry
In 100mL plastic bottle, addition is preheated to 25 DEG C or so of digestion agent 50.0mL, corresponding bottle cap is covered tightly, at 25 ± 1 DEG C
Under liquid temperature, constant temperature shakes 30min or so at 25 DEG C on reciprocal oscillator, is filtered immediately with without phosphorus filter paper in the small of 100mL
In plastic cup；On the day of extraction soil sample, filter liquor 10.00mL is drawn, is put into dry 150mL triangular flasks, add colour developing
Agent 5mL, water 10mL, is slowly shaken, and discharges carbon dioxide, and 30min is placed at room temperature is higher than 15 DEG C, makes it fully aobvious
Color, then with spectrophotometer reading.Two parts of national standard soil samples are determined simultaneously during every batch of soil sample determines, and are determined each time
It is required for doing blank test；X=c × 50 is calculated, c is solution concentration.
In step 101, the potassium assay method, such as can be ammonium acetate extraction-flame spectrometry.With neutral 1mol/
L ammonium acetate solutions are digestion agent, and the potassium ion of ammonium ion and soil colloids swaps, and enters together with soluble potassium
Enter solution, the potassium in leachate can directly use flame spectrophotometer measuring.
Preferably, the reagent of the potassium determination method and it is formulated as：Ammonium acetate solution：Weigh 77.08g ammonium acetates and be dissolved in nearly 1L
In water, with 1:1 ammoniacal liquor regulation PH is 7.0, is diluted with water to 1L；Potassium standard liquid；Weigh the chlorination dried at 110 DEG C 2 hours
Potassium 0.1907g, 1L is settled to after being dissolved with water, is stored in plastic bottle.
It is further preferred that the analytical procedure of the potassium determination method is：Weigh the air-dried soil sample 2.5g by 2mm aperture sieves
In 50mL plastic bottle, adding 25.0mL ammonium acetate solutions, (native liquor ratio is 1:10) bottle cap, is covered tightly, is shaken up, on earthquake machine
30min is vibrated, does filtering.With ammonium acetate solution conditioning instrumentation zero point, filtrate is preferably connected on flame photometer and determined, while does sky
White experiment and national standard soil；The drafting of standard curve：Respectively draw 100ug/mL potassium standard liquid 0.00,5.00,30.00,
45.00th, 60.00,75.00mL is in 250mL volumetric flasks, with ammonium acetate solution constant volume, as concentration be 0,6,12,18,24,
30ug/ml standard serial solution, with sample flame spectrophotometer measuring, draw standard curve.
As a result calculate：Available potassium (k) mg/kg=pvD × 1000/m1000.
Step 102：The useless mash is evaporated processing, solid content is reached 55%.
Preferably, the evaporation process is that seven effects are evaporated.
Preferably, the seven effects evaporation comprises the following steps, first carries out five effect evaporations, solid content is reached 35%；Enter again
The effect evaporation of row two, makes solid content reach 55%, to reduce scale formation.
Condensed water during the evaporation process can deliver to squeezing process as process water.
Table 2 is useless mash component requirements content and actual measurement content, carries out composition to the useless mash after seven effect evaporations and contains
Amount detection, preferably 3 2L sample, the key instrument used include：Azotometer, atomic absorption spectrophotometer, acidometer, electricity
Hot thermostatic drying chamber, AFS etc..Flocculant pretreatment, acidifying are carried out respectively to 3 samples of the useless mash
Heat and sodium hypochlorite pretreatment, detect the content of each composition in the useless mash, as lead, cadmium, mercury, arsenic, chromium, calcium, magnesium,
Boron, full nitrogen, phosphorus, potassium, organic matter etc..Wherein, the detection method of lead, cadmium, mercury, arsenic, chromium and organic matter is with reference to organic fertilizer standard
Method detects in NY525-2012；Calcium, magnesium, boron are detected using water soluble salt Determination of Gross, and full nitrogen is using the full nitrogen inspection
Survey method detects；Phosphorus is detected using the phosphorus determination method；Potassium is detected using the potassium assay method.
Table 2, useless mash component content requirement and actual measurement content (unit：mg/kg)
Full nitrogen detection method, phosphorus determination method detection method, potassium assay method such as step 101 embodiment institute described in step 102
State.
Water soluble salt Determination of Gross described in step 102, such as can be conductance method.Water soluble salt category strong electrolyte,
The power of its solution conductivity ability is referred to as conductivity, and in the range of finite concentration, salt content and the electrical conductivity of solution are proportionate.
Therefore, the numerical value of leachate electrical conductivity can reflect the height of soil salt content, but can not reflect the composition of salt-mixture.If solution
In the odds ratio of several salinities to each other it is more fixed when, then be fairly accurate with the height of the total salt concentration of Means of Electrical Conductivity.
Preferably, analytical procedure is：Salt standard liquid, sodium chloride, potassium sulfate, sodium acid carbonate is taken to be dried in 105 DEG C of baking ovens
4-6 hours, take out in drier, cool down half an hour.5.00 grams of 5.00 grams+potassium sulfate of precision weighing sodium chloride, constant volume is in 1L
In volumetric flask；10.00 grams of constant volumes of sodium acid carbonate are in 1L volumetric flasks；Constant volume is mixed in two 250ML volumetric flasks respectively
500ML volumetric flasks；Accurate respectively to draw 25ML solution, constant volume is in 500ML volumetric flasks.The drafting of standard curve, draws respectively
0.1% salt standard liquid volume (ML)：2,3,4,6,8,10,15,20,30,40 in 50ML volumetric flasks, with distilled water constant volume,
As total salt content (‰) 0.2,0.3,0.4,0.6,0.8,1.0,1.5,2.0,3.0,4.0 is determined with conductivity gauge, draws standard
Curve；Soil sample determines, and weighs 10 grams of the air-dried sample by 2mm aperture sieves, is placed in 100ML plastic bottles, adds 50ML to remove two
The water (boiled 15 minutes of distilled water, cooling) of carbonoxide covers tightly bottle cap, is vibrated 3 minutes on vibrating machine, static about 30 minutes.Will
Electrode (after distilled water flushing, being blotted with filter paper) inserts static liquid, platinized platinum is fully immersed under liquid level, and is inserted in liquid as far as possible
The centre of body, the conductivity of prepare liquid is determined, salt content is read according to curve map.
Step 103：The activated sludge and the useless mash are pressed 1:50 are configured to mixed liquor；
Step 104：Processing is dried in the mixed liquor.
Preferably, the drying process is dried for spray of negative pressure.
Preferably, processing, the centrifugal drying Ta Tanei pressure mixed liquor are dried using centrifugal drying tower
For -400~0Pa, 300~350 DEG C of tower body EAT, air quantity 70000Nm3/h, the mixed liquor feed rate 5.5~
6.7m3/h。
Fig. 2 is the embodiment flow chart of another method that organic fertilizer is prepared with waste liquid；
The waste liquid includes following step to prepare the useless mash that industrial alcohol formed as raw material by the use of sweet sorghum stalk
Suddenly：
Step 201：Activated sludge in sewage disposal process is subjected to dewater treatment, make moisture content reach 85%~
90%, the activated sludge PH scopes are 5.5~8.5.
Preferably, the equipment of the dewater treatment for filtering or centrifugation apparatus, such as：Horizontal screw machine, plate and frame type filter-press, sleeping rotation
Centrifuge etc..
Step 202：The useless mash is evaporated processing, solid content is reached 55%.
Preferably, the evaporation process is that seven effects are evaporated.
Preferably, the seven effects evaporation comprises the following steps, first carries out five effect evaporations, solid content is reached 35%；Enter again
The effect evaporation of row two, makes solid content reach 55%, to reduce scale formation.
Condensed water during the evaporation process can deliver to squeezing process as process water.
Step 203：The activated sludge and the useless mash are pressed 1:50 are configured to mixed liquor；
Step 204：Trace element is added into the mixed liquor.
According to the nitrogen content in the full nitrogen detection method detection mixed liquor, according to the water soluble salt Determination of Gross
Calcium in the mixed liquor, magnesium, boron equal size are determined, phosphorus content in the mixed liquor is determined according to the phosphorus determination method, according to
The potassium assay method determines the potassium content in the mixed liquor, then compares organic fertilizer standard NY525-2012, adds corresponding
The micronutrient levels such as trace element, wherein nitrogen, phosphorus, potassium can be in 1%~7.5% flexibly control.
Step 205：Processing is dried in the mixed liquor.
Preferably, the drying process is dried for spray of negative pressure.
Preferably, processing, the centrifugal drying Ta Tanei pressure mixed liquor are dried using centrifugal drying tower
For -400~0Pa, 300~350 DEG C of tower body EAT, air quantity 70000Nm3/ h, the mixed liquor feed rate 5.5~
6.7m3/h。
Preferably, the dried organic fertilizer water content is less than 5%.
Preferably, temperature≤45 DEG C during the organic fertilizer packaging.
A kind of organic fertilizer, it is characterised in that the organic fertilizer uses a kind of method system that organic fertilizer is prepared with waste liquid
Into.
It should also be noted that, term " comprising ", "comprising" or its any other variant are intended to nonexcludability
Comprising, so that process, method or equipment including a series of elements not only include those key elements, but also including not having
The other element being expressly recited, or also include for this process, method or the intrinsic key element of equipment.Not more
In the case of limitation, the key element that is limited by sentence "including a ...", it is not excluded that in the process including the key element, method
Or other identical element in equipment also be present.
Embodiments herein is the foregoing is only, is not limited to the application.For those skilled in the art
For, the application can have various modifications and variations.All any modifications made within spirit herein and principle, it is equal
Replace, improve etc., it should be included within the scope of claims hereof.
Claims (10)
1. a kind of method that organic fertilizer is prepared with waste liquid, the waste liquid is prepares industrial alcohol institute by the use of sweet sorghum stalk as raw material
The useless mash formed, it is characterised in that comprise the steps of：
Activated sludge in sewage disposal process is subjected to dewater treatment, moisture content is reached 85%~90%, the activity is dirty
Mud PH scopes are 5.5~8.5；
The useless mash is evaporated processing, solid content is reached 55%；
The activated sludge and the useless mash are pressed 1:50 are configured to mixed liquor；
Processing is dried in the mixed liquor.
2. the method according to claim 1 that organic fertilizer is prepared with waste liquid, it is characterised in that the drying process is negative pressure
Spray drying.
3. the method according to claim 1 that organic fertilizer is prepared with waste liquid, it is characterised in that also include to the mixed liquor
The middle step for adding trace element.
4. the method according to claim 1 that organic fertilizer is prepared with waste liquid, it is characterised in that the evaporation process include with
Lower step：
Five effect evaporations are first carried out, solid content is reached 35%；
Two effect evaporations are carried out again, solid content is reached 55%.
5. the method according to claim 1 that organic fertilizer is prepared with waste liquid, it is characterised in that the dried organic fertilizer
Water content is less than 5%.
6. the method that organic fertilizer is prepared with waste liquid according to Claims 1 to 5 any one, it is characterised in that used
Filter or centrifugation apparatus carry out the dewater treatment.
7. the method that organic fertilizer is prepared with waste liquid according to Claims 1 to 5 any one, it is characterised in that using from
Processing is dried to the mixed liquor in heart drying tower.
8. the method according to claim 7 that organic fertilizer is prepared with waste liquid, it is characterised in that the centrifugal drying Ta Tanei
Pressure is -400~0Pa, 300~350 DEG C of tower body EAT, air quantity 70000Nm3/ h, the mixed liquor feed rate 5.5~
6.7m3/h。
9. a kind of organic fertilizer, it is characterised in that the organic fertilizer is using the method described in claim 1~8 any one
It is made.
A kind of 10. organic fertilizer packing method, for organic fertilizer described in claim 9, it is characterised in that the organic fertilizer packaging temperature
≤ 45 DEG C of degree.
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| US20020088749A1 (en) * | 2000-11-07 | 2002-07-11 | Highsmith Ronald Earl | Beneficiated sludge |
| CN101045650A (en) * | 2007-04-27 | 2007-10-03 | 中国科学院生态环境研究中心 | Restoration of polluted soil using activity sludge and biomass waste material |
| CN102320873A (en) * | 2011-08-17 | 2012-01-18 | 中国科学院广州能源研究所 | Method for preparing composite slow-release fertilizer by common utilization of biomass and sludge |
| CN103449848A (en) * | 2013-08-28 | 2013-12-18 | 杨季冬 | Method for producing fertilizer from sludge generated in sewage treatment |
| CN103553288A (en) * | 2013-11-21 | 2014-02-05 | 武汉森泰环保工程有限公司 | Method for preparing water treatment biological activity accelerant from winery wastewater treatment sludge |
| CN104774045A (en) * | 2015-04-10 | 2015-07-15 | 民勤县拓普草业有限公司 | Method for processing microbial organic bacterial fertilizer from Sorghum vulgare wort |
-
2017
- 2017-07-07 CN CN201710553133.5A patent/CN107473781A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020088749A1 (en) * | 2000-11-07 | 2002-07-11 | Highsmith Ronald Earl | Beneficiated sludge |
| CN101045650A (en) * | 2007-04-27 | 2007-10-03 | 中国科学院生态环境研究中心 | Restoration of polluted soil using activity sludge and biomass waste material |
| CN102320873A (en) * | 2011-08-17 | 2012-01-18 | 中国科学院广州能源研究所 | Method for preparing composite slow-release fertilizer by common utilization of biomass and sludge |
| CN103449848A (en) * | 2013-08-28 | 2013-12-18 | 杨季冬 | Method for producing fertilizer from sludge generated in sewage treatment |
| CN103553288A (en) * | 2013-11-21 | 2014-02-05 | 武汉森泰环保工程有限公司 | Method for preparing water treatment biological activity accelerant from winery wastewater treatment sludge |
| CN104774045A (en) * | 2015-04-10 | 2015-07-15 | 民勤县拓普草业有限公司 | Method for processing microbial organic bacterial fertilizer from Sorghum vulgare wort |
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Application publication date: 20171215 |