CN109205974A - A method of extracting organic matter from organic sludge - Google Patents
A method of extracting organic matter from organic sludge Download PDFInfo
- Publication number
- CN109205974A CN109205974A CN201811336733.7A CN201811336733A CN109205974A CN 109205974 A CN109205974 A CN 109205974A CN 201811336733 A CN201811336733 A CN 201811336733A CN 109205974 A CN109205974 A CN 109205974A
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- Prior art keywords
- organic
- organic sludge
- sludge
- organic matter
- fertilizer
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
Abstract
The method that the invention discloses a kind of to extract organic matter from organic sludge, belongs to organic sludge treatment technical field.This method is concentrated through peroxidating low-temperature treatment, centrifugation, inorganic ceramic membrane using organic sludge as raw material and the preparation step of freeze-drying obtains organic fertilizer.It has the beneficial effect that the present invention can carry out recycling recycling to organic sludge using organic sludge as raw material, while also providing a kind of good organic sludge treatment method；Method flow is succinct, and technical process itself is environmental-friendly, avoids polluting again；Organic fertilizer and humic acid content are high in the product of preparation, and content of beary metal meets the national standard of organic fertilizer, in addition also contain a small amount of n-p-k element, are very suitable to be used as the fertilizer of plant growth.
Description
Technical field
Technical field of sludge treatment of the present invention, in particular to a kind of method that organic matter is extracted from organic sludge.
Background technique
With the rapid development of national economy, urbanization process is constantly accelerated, and brings the life of high quality in people's lives
While condition, also carry out a large amount of sanitary sewage to urban belt and sludge, sewage treatment total amount sharply rise, gives sewage treatment band
Unprecedented challenge is carried out, while the sludge of sewage treatment plant is also constantly accumulated, if sludge handles and exclude not in time meeting
Bring secondary pollution.
Not only contain a large amount of organic matter in the organic sludge of city, protein 46 ~ 52%, carbon aquation are wherein contained in organic matter
Object 17% is closed, humic acid 18% ~ 23%, remaining is the ingredients such as uric acid and inorganic salts.Organic matter can provide what plant was grown in sludge
The nutriments such as nitrogen phosphorus have good facilitation to crop, and the organic fertilizer extracted can improve soil texture, add
Fast agron is formed, and the fertilizer efficiency of soil is improved；There is buffer function to acid soil and salt affected soil, moreover it is possible to activating soil
Nutrient；Humic acid in sludge is the sustained release agent of nitrogenous fertilizer, and ammonium humate can play the role of saving ammoniacal nitrogen for a long time.
But the land utilization ratio of Chinese organic sludge is very low, sewage treatment plant is more casual to the disposition of sludge, greatly
Most sewage treatment plants do not have the technology and equipment of processing sludge.Therefore, organic fertilizer is produced not using organic sludge as raw material
Only there is resource utilization value very much, and significant.
Summary of the invention
To solve the above-mentioned problems, the method that the embodiment of the invention provides a kind of extracts organic matter from organic sludge.
The technical solution is as follows:
The method that the present invention provides a kind of to extract organic matter from organic sludge, comprising the following steps:
Step 1: organic sludge being diluted with water to solid content in 30g/L ~ 50g/L, oxidant is added, with 150 ~ 200rpm speed
Degree stirs and evenly mixs 3 ~ 6h of processing, and carries out 30 ~ 50 DEG C of Low Temperature Heat Treatment to turbid solution simultaneously；
Step 2: by the step 1, treated that turbid solution is pumped into sleeping spiral shell discharging sedimentation centrifuge, is separated by solid-liquid separation, take from
The clear liquid of the heart；
Step 3: being concentrated to the centrifugal clear liquid of the step 2 by inorganic ceramic membrane, take concentrate；
Step 4: organic fertilizer products can be obtained by freeze-drying in the concentrate of the step 3.
Further, the model LW220*660 of the sleeping spiral shell discharging sedimentation centrifuge in the step 2, separation because
Element is 1800 ~ 3000, and the draw ratio of centrifuge is 3.5 ~ 4.5, and differential mechanism is hydraulic differential；It is before centrifugation that temperature of charge is cooling
To 4 ~ 8 DEG C, controlled at 30 ~ 40 DEG C in centrifugal process.
Further, the pH value of the centrifugal clear liquid is adjusted to 8.5 ~ 9.0 before the step 3.
Further, the ceramic membrane aperture in the step 3 is 20 ~ 35nm, and filter type is cross-flow filtration, and cocnentration factor is
1:50~1:100。
Technical solution provided in an embodiment of the present invention has the benefit that
1, the present invention prepares organic fertilizer using organic sludge as raw material, and recycling recycling can be carried out to organic sludge, while
Provide a kind of good organic sludge treatment method.
2, method flow provided by the invention is succinct, and main application oxidation low temperature broken wall and ceramic membrane concentration technique are extracted,
Technical process itself is environmental-friendly, avoids polluting again.
3, the content of organic fertilizer is high in the product of preparation of the embodiment of the present invention, while humic acid content in the organic fertilizer product
Height, content of beary metal meet the national standard of organic fertilizer；In addition also contain a small amount of n-p-k element, be very suitable to be used as plant
The fertilizer of object growth.
Detailed description of the invention
Fig. 1 is a kind of method flow schematic diagram that organic matter is extracted from organic sludge provided by the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
Step ground detailed description.
Embodiment one
The method of organic matter is extracted in a kind of organic sludge of the invention: organic sludge 100kg being taken to be diluted with water to solid content
For 35g/L, 130mg/L(m/v is added) liquor natrii hypochloritis, processing 4.5h is stirred and evenly mixed with 170rpm speed, and simultaneously to muddy
Turbid carries out 45 DEG C of Low Temperature Heat Treatment, and chilled brine can be passed through into the collet of kettle repeatedly after the completion of Low Temperature Heat Treatment, controls
Turbid solution processed stabilizes to 5 DEG C；Then, turbid solution is pumped into sleeping spiral shell discharging sedimentation centrifuge, is separated by solid-liquid separation, takes centrifugation
Clear liquid；It after the pH value of centrifugal clear liquid is adjusted to 8.7, is concentrated by ceramic film component, ceramic membrane aperture is 20 ~ 35nm, concentration
Than for 1:60, reject penetrates liquid, concentrated liquid is collected.
Embodiment two
The method of organic matter is extracted in a kind of organic sludge of the invention: organic sludge 123kg being taken to be diluted with water to solid content
For 42g/L, with 0.092 ~ 0.351O of input amount3/ gSS is passed through ozone, stirs and evenly mixs processing 5.0h with 190rpm speed, and simultaneously
43 DEG C of Low Temperature Heat Treatment is carried out to turbid solution, can be passed through freezing salt after the completion of Low Temperature Heat Treatment into the collet of kettle repeatedly
Water, control turbid solution stabilizes to 6 DEG C；Turbid solution is pumped into sleeping spiral shell discharging sedimentation centrifuge, is separated by solid-liquid separation, takes centrifugation
Clear liquid；It after the pH value of centrifugal clear liquid is adjusted to 8.6, is concentrated by ceramic membrane group, ceramic membrane aperture is 20 ~ 35nm, cocnentration factor
For 1:70, reject penetrates liquid, collects concentrated liquid.
Embodiment three
A kind of method for extracting organic matter from organic sludge of the invention: it takes organic sludge 132kg to be diluted with water to solid and contains
Amount is 45g/L, additional amount 150mg/L(m/v) double-chain quaternary ammonium salt solution, processing 5.5h is stirred and evenly mixed with 200rpm speed, and
40 DEG C of Low Temperature Heat Treatment is carried out to turbid solution simultaneously, freezing can be passed through into the collet of reaction kettle after the completion of Low Temperature Heat Treatment
Salt water, control turbid solution stabilizes to 7 DEG C；Turbid solution is pumped into sleeping spiral shell discharging sedimentation centrifuge, is separated by solid-liquid separation, and centrifugation is taken
Clear liquid；It after the pH value of centrifugal clear liquid is adjusted to 8.8, is concentrated by ceramic film component, ceramic membrane aperture is 20 ~ 35nm, mistake
Filter mode is cross-flow filtration, and cocnentration factor 1:80, reject is through liquid, collection concentrated liquid.
Example IV
The source of embodiment sludge is mainly the mixed of the primary sedimentation pond of sewage treatment plant, secondary sedimentation tank and anaerobically digested sludge
Close object.The essential characteristic index of sludge is the average value of three embodiments of the invention in embodiment, and moisture percentage in sewage sludge is using filter
The measurement of paper seasoning, the content of organic matter are the percentage that dry matter accounts for sludge, and the content of organic matter is determined referring to GB18918-2002,
The measurement of metallic element is measured using ion mass spectrometry, and fulvic acid content is determined referring to ZBG21005-87 in final concentrate,
Protein content is measured using Kao Masi brilliant blue method, and carbohydrate is measured using anthrone colorimetry.
The essential characteristic of sludge in 1 embodiment of table
| Moisture content/% | Organic matter (g/kg) | Protein (g/kg) | Carbohydrate (g/kg) | Humic acid (g/kg) | Hg(mg/kg) | As(mg/kg) | Pb(mg/kg) | Cr(mg/kg) | N(g/kg) | P(g/kg) | K(g/kg) |
| 97.35± 0.35 | 463.25±12.53 | 115.31±4.25 | 283.46±41.26 | 54.7±1.35 | 208.09± 0.42 | 305.35± 0.72 | 234.71± 0.56 | 20.15± 2.42 | 25.34± 836 | 4.5± 2.52 | 10.76± 2.82 |
Embodiment five
Table 2 is the organic matter yield and final organic matter yield of step 1, step 2, step 3 and step 4.Index in table 2 is this
Invent the average value of the sample of three embodiments three times.
Table 2
。
Embodiment six
Table 3 is that the embodiment of the present invention finally obtains organic fertilizer indices.Index in table 3 is the sample of three embodiments of the invention
The average value of product three times
| Total organic matter (w%) | Protein (w%) | Carbohydrate (w%) | Humic acid (w%) | Hg(w%) | As(w%) | Pb(w%) | Cr(w%) | N(w%) | P(w%) | K(w%) |
| 81.45±0.32% | 19.34± 0.54% | 47.23±0.78% | 9.57±0.26% | 0.00009± 0.000012% | 0.0035± 0.0002% | 0.0071± 0.0006% | 0.0015± 0.00042% | 3.34± 0.036% | 0.75± 0.052% | 3.26± 0.12% |
Claims (4)
1. a kind of method for extracting organic matter from organic sludge, it is characterised in that: the following steps are included:
Step 1: organic sludge being diluted with water to solid content in 30g/L ~ 50g/L, oxidant is added, with 150 ~ 200rpm speed
Degree stirs and evenly mixs 3 ~ 6h of processing, and carries out 30 ~ 50 DEG C of Low Temperature Heat Treatment to turbid solution simultaneously:
Step 2: by the step 1, treated that turbid solution is pumped into sleeping spiral shell discharging sedimentation centrifuge, is separated by solid-liquid separation, take from
The clear liquid of the heart；
Step 3: being concentrated to the centrifugal clear liquid of the step 2 by inorganic ceramic membrane, take concentrate；
Step 4: organic fertilizer products can be obtained by freeze-drying in the concentrate of the step 3.
2. a kind of method for extracting organic matter from organic sludge according to claim 1, which is characterized in that the step
The model LW220*660 of the sleeping spiral shell discharging sedimentation centrifuge in 2, separating factor are 1800 ~ 3000, the major diameter of centrifuge
Than being 3.5 ~ 4.5, differential mechanism is hydraulic differential；Temperature of charge is cooled to 4 ~ 8 DEG C before centrifugation, temperature is controlled in centrifugal process
It is 30 ~ 40 DEG C.
3. a kind of method for extracting organic matter from organic sludge according to claim 1, which is characterized in that the step
The pH value of the centrifugal clear liquid is adjusted to 8.5 ~ 9.0 before 3.
4. a kind of method for extracting organic matter from organic sludge according to claim 1, which is characterized in that the step
Ceramic membrane aperture in 3 is 20 ~ 35nm, and filter type is cross-flow filtration, and cocnentration factor is 1:50 ~ 1:100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336733.7A CN109205974A (en) | 2018-11-12 | 2018-11-12 | A method of extracting organic matter from organic sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336733.7A CN109205974A (en) | 2018-11-12 | 2018-11-12 | A method of extracting organic matter from organic sludge |
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| Publication Number | Publication Date |
|---|---|
| CN109205974A true CN109205974A (en) | 2019-01-15 |
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ID=64995129
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| CN201811336733.7A Pending CN109205974A (en) | 2018-11-12 | 2018-11-12 | A method of extracting organic matter from organic sludge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229807A (en) * | 2020-08-28 | 2021-01-15 | 湖北华耀生物科技有限公司 | Portable sludge organic matter measuring device |
| CN113105915A (en) * | 2021-03-29 | 2021-07-13 | 国能龙源环保有限公司 | Method and system for efficiently recovering heavy wax and catalyst in Fischer-Tropsch synthesis slag wax |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531303A (en) * | 2012-01-16 | 2012-07-04 | 同济大学 | Method for improving dry process fermenting property of municipal sludge by sludge modification |
| CN206666422U (en) * | 2017-04-21 | 2017-11-24 | 南京钛净流体技术有限公司 | A kind of device of embrane method extraction humic acid |
-
2018
- 2018-11-12 CN CN201811336733.7A patent/CN109205974A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531303A (en) * | 2012-01-16 | 2012-07-04 | 同济大学 | Method for improving dry process fermenting property of municipal sludge by sludge modification |
| CN206666422U (en) * | 2017-04-21 | 2017-11-24 | 南京钛净流体技术有限公司 | A kind of device of embrane method extraction humic acid |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229807A (en) * | 2020-08-28 | 2021-01-15 | 湖北华耀生物科技有限公司 | Portable sludge organic matter measuring device |
| CN112229807B (en) * | 2020-08-28 | 2024-04-02 | 湖北华耀生物科技有限公司 | Portable sludge organic matter measuring device |
| CN113105915A (en) * | 2021-03-29 | 2021-07-13 | 国能龙源环保有限公司 | Method and system for efficiently recovering heavy wax and catalyst in Fischer-Tropsch synthesis slag wax |
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