CN110066198A - The method for preparing organic fertilizer using municipal sludge - Google Patents
The method for preparing organic fertilizer using municipal sludge Download PDFInfo
- Publication number
- CN110066198A CN110066198A CN201910280815.2A CN201910280815A CN110066198A CN 110066198 A CN110066198 A CN 110066198A CN 201910280815 A CN201910280815 A CN 201910280815A CN 110066198 A CN110066198 A CN 110066198A
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- China
- Prior art keywords
- sludge
- organic
- organic fertilizer
- organo
- sterilizing
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Classifications
-
- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Abstract
The present invention relates to sludge treatment field, disclose a kind of method for preparing organic fertilizer using municipal sludge, include the following steps: that A. sterilizes to sludge, turf, vermiculite and perlite are added after sterilizing, and be sufficiently stirred；B. the sludge after sterilizing is added in organo-mineral complexing sludge conditioner, and carries out the inorganic sludge lock out operation of organic sludge；C. it is carried out dehydrating after organic sludge being isolated, then carries out aerobic compost and obtain organic fertilizer.It can effectively deal with municipal sludge using this method, while the organic fertilizer that sludge is converted to and can be used for ornamental plant of turning waste into wealth, realize resources.
Description
Technical field
The present invention relates to sludge treatment field, and in particular to a method of organic fertilizer is prepared using municipal sludge.
Background technique
With the increase of Beijing's sewage treatment facility, the in-depth of the raising of handling rate and degree for the treatment of, sewage treatment plant
Sludge yield sharply increase.According to " Beijing, which is further speeded up, promotes three Nian Hangdong of waste water control and reclaimed wastewater reuse work
Scheme (in June, -2019 in July, 2016) ", to the end of the year 2019, realize that the processing of whole city's sewage sludge harmlessness and resource utilization are horizontal
It is further promoted, sludge yield is estimated to reach 1,800,000 t or so.In this context, sewage treatment plant's dirt is further realized
Mud ecological use just seems very necessary.
Beijing Today city specifically includes that sanitary landfills, burning, land use, production building materials for the disposal options of sludge.
Wherein land use has accounted for major part.Beijing City uses " pyrohydrolysis+anaerobic digestion+frame dehydration+soil at present
Using " processing mode, periphery uses compost treatment technique, and sludge treatment mostly uses interim land use and cement kiln to cooperate with to burn
Burning mode, but the problems such as due to technique or facility, partial sludge does not obtain effectively handling disposition.
Currently, with Chinese society's expanding economy, people are also higher and higher for the pursuit of quality of the life, Chinese garden planting
Also further development has therefore been obtained.But also producing such as garden waste at the same time cannot be handled in time
Cause it to have an impact ambient enviroment and Chinese garden planting heavy metal content in soil is exceeded, organic matter and nutrient content are insufficient
The problems such as.Therefore, by the discussion for above-mentioned background, consider to prepare by municipal sludge the method for gardens organic fertilizer come
Handle all class problems.Not only municipal sludge is made the best use of everything in this way, while the further of gardens cause can also be promoted
Development.And currently has the invention of many this aspects, therefore the present invention considers to realize heavy metal separation simultaneously from a kind of medicament is added
The further innovation in afforestation organic fertilizer and a kind of method is prepared by the production technology of aerobic compost.
Summary of the invention
Of the invention provides a kind of method for preparing organic fertilizer using sludge, is on the one hand capable of handling increasing
On the other hand municipal sludge is prepared into organic fertilizer and uses to realize and turn waste into wealth.
To achieve the goals above, one aspect of the present invention provides a kind of method for preparing organic fertilizer using sludge, including
Following steps:
A. it sterilizes to sludge, turf, vermiculite and perlite is added after sterilizing, is sufficiently stirred；
B. the sludge after sterilizing is added in organo-mineral complexing sludge conditioner, carries out the inorganic sludge lock out operation of organic sludge；
C. it is carried out dehydrating after organic sludge being isolated, then carries out aerobic compost and obtain organic fertilizer.
Preferably, the organo-mineral complexing sludge conditioner includes sludge flocculation dehydrating agent, seepage flow drag reducer, solidification branch
Support agent.It can be effectively by heavy metal precipitation when carrying out the separation of organic-inorganic sludge using the sludge conditioner of the material composition
In supernatant to be separated with sludge, while it is smaller to the loss of sludge organic matter nutrient.
Preferably, in the organo-mineral complexing sludge conditioner, sludge flocculation dehydrating agent, seepage flow drag reducer and solidification branch
Supportting the weight ratio between agent is 1:(0.1-10): (0.1-10).
Preferably, the temperature of sterilizing described in step A is controlled at 100-120 DEG C.
Preferably, in step A each component content by weight successively are as follows: sludge: turf: vermiculite: limestone 1:(0.5-
2): (0.5-2): (0.5-2).Turf, vermiculite and the limestone being added in sludge are common soil additive, for optimizing
The performance of organic fertilizer made of prepared.
Preferably, in step B organo-mineral complexing sludge conditioner additional amount be sludge weight 0.1%-10%.
Preferably, sludge described in step B can be layered as three layers, and being embodied in upper layer is supernatant, heavy metal precipitation
In supernatant to be separated；Middle layer is organic sludge layer；Lower layer is inorganic separating layer.Sludge is set by conventional separation
It is standby to be separated into supernatant, inorganic sludge and three layers of organic sludge, organic fertilizer is carried out to isolate the organic sludge containing nutrient
The preparation of material, remaining inorganic sludge can also make other purposes, be used for example as construction material.
Preferably, the time of aerobic compost described in step C is less than or equal to 5 days.
Preferably, granulation operations to also be carried out to gained organic fertilizer after step C, obtaining partial size is having for 3-5mm
Machine fertilizer, obtained organic fertilizer permeability is high, and porosity is big.
In the present invention, it joined a kind of special organo-mineral complexing sludge conditioner, which is sludge flocculation
Dehydrating agent, seepage flow drag reducer and the combination for solidifying proppant effectively will can largely be had using this kind of conditioner in sludge
Evil heavy metal substance is deposited in sludge supernatant to being separated, and this process to the content of organic matter in organic sludge most
The organic sludge isolated is carried out aerobic composting fermentation operation, heavy metal can be obtained by the reservation of big degree by the operation
The organic fertilizer that content is low and organic matter nutriment content is high.
Through the above technical solutions, sludge is prepared into organic fertilizer, the resource circulation utilization turned waste into wealth, energy are realized
Enough retain organic matter nutriment in sludge, and can effectively remove heavy metal component, avoids secondary pollution.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
To achieve the above object, the present invention provides a kind of method for preparing organic fertilizer using sludge, includes the following steps:
A. sterilizing is modulated to sludge, turf, vermiculite and perlite is added after sterilizing, and be sufficiently stirred；B. by organo-mineral complexing
The sludge after sterilizing is added in sludge conditioner, and carries out the inorganic sludge lock out operation of organic sludge；C. organic sludge is isolated
After be carried out dehydrating, then carry out aerobic compost obtain organic fertilizer.
In the present invention, the organo-mineral complexing sludge conditioner is sludge flocculation dehydrating agent, seepage flow drag reducer and consolidates
Change the combination of proppant.In the organo-mineral complexing sludge conditioner, sludge flocculation dehydrating agent, seepage flow drag reducer and solidification branch
The weight ratio supportted between agent can be 1:(0.1-10): (0.1-10), under preferable case, the sludge flocculation dehydrating agent, seepage flow
Drag reducer and the weight ratio solidified between proppant can be 1:(0.5-5): (0.5-5) specifically, such as can be 1:0.5:
0.5,1:1:1,1:2:2,1:3:3,1:4:4 or 1:5:5.
In the present invention, the method for sterilizing described in step A is not particularly limited, and can be the sterilizing side of this field routine
Method, such as can be high-temperature sterilization, the temperature of the sterilizing can control at 100-120 DEG C, specifically, such as can be 100
DEG C, 105 DEG C, 110 DEG C, 115 DEG C or 120 DEG C.
In the present invention, each component by weight ratio respectively can be in step A are as follows: sludge: turf: vermiculite: limestone is
1:(0.5-2): (0.5-2): (0.5-2), it is preferable that the sludge: turf: vermiculite: limestone 1:(0.67-1.33):
(0.67-1.33): (0.67-1.33), specifically, the ratio can be 1:0.67:0.67:0.67,1:1:1:1 and 1:
1.33:1.33:1.33。
In the present invention, organo-mineral complexing sludge conditioner additional amount can be the 0.1%- of sludge weight in step B
10%, in the preferred case, the organo-mineral complexing sludge conditioner additional amount can be the 0.5%-5% of sludge weight, specifically
Ground, such as can be 0.5%, 1%, 2%, 3%, 4%, 5%.
In the present invention, sludge described in step B can be layered as three layers after lock out operation, and specifically, upper layer is upper
Clear liquid, heavy metal precipitation is in supernatant to be separated；Middle layer is organic sludge layer；Lower layer is inorganic separating layer.
In the present invention, the time of aerobic compost described in step C is less than or equal to 5 days, it is preferable that the time of aerobic compost
It is 2-4 days, such as can is 2,2.5,3,3.5,4 days.
In the present invention, granulation operations are carried out after step C, obtaining organic fertilizer partial size can be 3-5mm, specifically, described
Partial size can be 3,3.5,4,4.5,5mm.
The present invention will be described in detail by way of examples below.
Embodiment 1
15 parts by weight municipal sludge samples are taken, are modulated sterilizing to it, temperature when sterilizing is controlled at 100 DEG C.Add after sterilizing
Enter turf, vermiculite and each 10 parts by weight of perlite, and is sufficiently stirred；Mud mixture after stirring is put into organic-inorganic separation
In device, and organo-mineral complexing sludge conditioner is added, sludge flocculation is dehydrated in the organo-mineral complexing sludge conditioner
Agent, seepage flow drag reducer and the weight ratio solidified between proppant are 1:1:1, the content that organo-mineral complexing sludge conditioner is added
It is the 1% of sludge weight, sludge can be divided into supernatant, organic sludge and 3 layers of inorganic sludge after lock out operation.
Then organic sludge will be isolated to be dehydrated, dewatered organic sludge carries out sludge aerobic compost, this process
In carry out air blast ventilation simultaneously, the time of aerobic compost is 4 days, is then granulated gained organic fertilizer, obtaining partial size is
The organic fertilizer of 3mm.
Embodiment 2
15 parts by weight municipal sludge samples are taken, are modulated sterilizing to it, temperature when sterilizing is controlled at 120 DEG C.Add after sterilizing
Enter turf, vermiculite and each 15 parts by weight of perlite, and is sufficiently stirred；Mud mixture after stirring is put into organic-inorganic separation
In device, and organo-mineral complexing sludge conditioner is added, sludge flocculation is dehydrated in the organo-mineral complexing sludge conditioner
Agent, seepage flow drag reducer and the weight ratio solidified between proppant are 1:2:2, the content that organo-mineral complexing sludge conditioner is added
It is the 2% of sludge weight, sludge can be divided into supernatant, organic sludge and 3 layers of inorganic sludge after lock out operation.
Then organic sludge will be isolated to be dehydrated, dewatered organic sludge carries out sludge aerobic compost, this process
In carry out air blast ventilation simultaneously, the time of aerobic compost is 3 days, is then granulated gained organic fertilizer, obtaining partial size is
The organic fertilizer of 4mm.
Embodiment 3
15 parts by weight municipal sludge samples are taken, are modulated sterilizing to it, temperature when sterilizing is controlled at 110 DEG C.Add after sterilizing
Enter turf, vermiculite and each 20 parts by weight of perlite, and is sufficiently stirred；Mud mixture after stirring is put into organic-inorganic separation
In device, and organo-mineral complexing sludge conditioner is added, sludge flocculation is dehydrated in the organo-mineral complexing sludge conditioner
Agent, seepage flow drag reducer and the weight ratio solidified between proppant are 1:1:2, the content that organo-mineral complexing sludge conditioner is added
It is the 3% of sludge weight, sludge can be divided into supernatant, organic sludge and 3 layers of inorganic sludge after lock out operation.
Then organic sludge will be isolated to be dehydrated, dewatered organic sludge carries out sludge aerobic compost, this process
In carry out air blast ventilation simultaneously, the time of aerobic compost is 5 days, is then granulated gained organic fertilizer, obtaining partial size is
The organic fertilizer of 3.5mm.
Embodiment 4
Organic fertilizer is prepared using municipal sludge according to the method for embodiment 3, the difference is that the organo-mineral complexing sludge
The content that conditioner is added is the 0.2% of sludge weight.
According to method described in GB 4284-2018 to institute in organic fertilizer prepared by embodiment 1-3 and the present invention
The dewatered sludge used carries out moisture, organic matter, nutrient and content of beary metal and is detected, and the results are shown in Table 1:
Table 1
| Ingredient | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Dewatered sludge |
| Mercury mg/kg | 0.136 | 0.145 | 0.131 | 0.156 | 1.2 |
| Arsenic mg/kg | 0.792 | 0.756 | 0.768 | 0.801 | 8.9 |
| Copper mg/kg | <1 | <1 | <1 | <1 | 486.5 |
| Zinc mg/kg | 86.8 | 79.6 | 85.6 | 93.6 | 506.3 |
| Nickel mg/kg | 86 | 89 | 88 | 91.3 | 115.1 |
| Chromium mg/kg | 150 | 145 | 142 | 157 | 256.1 |
| Lead mg/kg | <0.1 | <0.1 | <0.1 | <0.1 | 56.2 |
| Cadmium mg/kg | <0.01 | <0.01 | <0.01 | <0.01 | 2.6 |
| Potassium g/kg | 4.3 | 4.2 | 4.2 | 5.9 | 6.9 |
| Full nitrogen g/kg | 7.08 | 7.59 | 7.32 | 7.01 | 23.6 |
| Full phosphorus g/kg | 1.06 | 1.09 | 1.11 | 1.03 | 9.3 |
| Organic matter g/kg | 186 | 193 | 188 | 188 | 256 |
| Moisture | 58.80% | 57.80% | 58.60% | 57.60% | 79.26% |
It can be seen that the organic fertilizer being prepared after handling using the present invention sludge by the result of table 1, compare not
The concentration of processed sludge, heavy metal significantly reduces, while the organic composition in sludge has also obtained effective reservation.
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In skill of the invention
In art conception range, can with various simple variants of the technical solution of the present invention are made, including each technical characteristic with it is any its
Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, is belonged to
Protection scope of the present invention.
Claims (9)
1. a kind of method for preparing organic fertilizer using sludge, which is characterized in that this method comprises the following steps:
A. it sterilizes to sludge, turf, vermiculite and perlite is added after sterilizing, is sufficiently stirred；
B. the sludge after sterilizing is added in organo-mineral complexing sludge conditioner, carries out the inorganic sludge lock out operation of organic sludge；
C. it is carried out dehydrating after organic sludge being isolated, then carries out aerobic compost and obtain organic fertilizer.
2. the method according to claim 1, wherein the organo-mineral complexing sludge conditioner is sludge flocculation
Dehydrating agent, seepage flow drag reducer and the combination for solidifying proppant.
3. according to the method described in claim 2, it is characterized in that, in the organo-mineral complexing sludge conditioner, sludge
Flocculation dewatering agent, seepage flow drag reducer and the weight ratio solidified between proppant are 1:(0.1-10): (0.1-10).
4. the method according to claim 1, wherein the temperature of sterilizing described in step A is controlled in 100-120
℃。
5. the method according to claim 1, wherein each component content is by weight successively in step A are as follows: dirty
Mud: turf: vermiculite: limestone 1:(0.5-2): (0.5-2): (0.5-2).
6. the method according to claim 1, wherein organo-mineral complexing sludge conditioner described in step B adds
Enter the 0.1%-10% that amount is sludge weight.
7. upper layer is upper the method according to claim 1, wherein sludge described in step B can be layered as three layers
Clear liquid, heavy metal precipitation is in supernatant；Middle layer is organic sludge layer；Lower layer is inorganic sludge blanket.
8. the method according to claim 1, wherein the time of aerobic compost described in step C is less than or equal to 5
It.
9. method described in -8 according to claim 1, which is characterized in that also to be carried out after step C to gained organic fertilizer
Granulation operations obtain the organic fertilizer that partial size is 3-5mm.
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| CN201910280815.2A CN110066198A (en) | 2019-04-09 | 2019-04-09 | The method for preparing organic fertilizer using municipal sludge |
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| CN201910280815.2A CN110066198A (en) | 2019-04-09 | 2019-04-09 | The method for preparing organic fertilizer using municipal sludge |
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| CN110066198A true CN110066198A (en) | 2019-07-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111480551A (en) * | 2020-05-27 | 2020-08-04 | 北京师范大学 | Application method for preparing marigold culture medium by utilizing tannery sludge compost |
-
2019
- 2019-04-09 CN CN201910280815.2A patent/CN110066198A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111480551A (en) * | 2020-05-27 | 2020-08-04 | 北京师范大学 | Application method for preparing marigold culture medium by utilizing tannery sludge compost |
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Application publication date: 20190730 |