CN107081332A - A kind of method that utilization composting technology removes decabromodiphenyl oxide in soil - Google Patents
A kind of method that utilization composting technology removes decabromodiphenyl oxide in soil Download PDFInfo
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- CN107081332A CN107081332A CN201710290256.4A CN201710290256A CN107081332A CN 107081332 A CN107081332 A CN 107081332A CN 201710290256 A CN201710290256 A CN 201710290256A CN 107081332 A CN107081332 A CN 107081332A
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- Prior art keywords
- decabromodiphenyl oxide
- soil
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- removes
- composting technology
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kind of method that utilization composting technology removes decabromodiphenyl oxide in soil.The key step of this method includes：Excess sludge, conditioner are well mixed as composting material, to adjust its moisture content and carbon-nitrogen ratio with by decabromodiphenyl oxide contaminated soil, sludge aerobic compost is carried out by way of forced ventilation oxygen supply, composting cycle is 32 ~ 38 d.Compost treatment can substantially reduce the content of decabromodiphenyl oxide in contaminated soil.This method can not only dispose the excess sludge of sewage treatment plant, but also can repair by decabromodiphenyl oxide contaminated soil, and with low cost and effect is good, with good application prospect.
Description
Technical field
The invention belongs to ecological environment recovery technique field, and in particular to one kind removes ten bromines in soil using composting technology
The method of Biphenyl Ether.
Background technology
With the continuous lifting of China's economic level, ur- banization speed is constantly accelerated, and the treating capacity of municipal sewage is also increasingly
Increase.And this is simultaneously, the disposal of sludge is an essential part in sewage disposal process.By the end of the end of the year 2013, China
The quantity of sewage treatment plant alreadys exceed more than 3400, and sewage treatment capacity is more than 1.45 hundred million m3/d.Mud is produced according to current sewage
Efficiency calculate, China's sludge daily output reached 8.2 ten thousand t.Substantial amounts of excess sludge, works as once dealing with improperly, environment is made
Possibility into secondary pollution is very big.Using the technology of sludge aerobic compost, it can make a silk purse out of a sow's ear, by sludge reduction, resource
Change is current maximally effective disposal options.
PBDE is widely made an addition to plastics, electronic product etc. because its is cheap and flame retardant effect is excellent
In industrial goods.Environment is easily entered due to lacking the PBDE in the constraint effect of chemical bond, product, and with big
The migration of gas and water body and cause extensive pollution.Wherein, the use of bromine content highest decabromodiphenyl oxide is widest.Cause
This, on it is decabromodiphenyl oxide contaminated the problem of have to be paid attention to.
The content of the invention
, can be in heap it is an object of the invention to provide a kind of method that utilization composting technology removes decabromodiphenyl oxide in soil
The quick decabromodiphenyl oxide removed in contaminated soil in the process of fertilizer, while reducing the environmental pressure that excess sludge is brought.
What the present invention took is following technical scheme.
A kind of method that utilization composting technology removes decabromodiphenyl oxide in soil, comprises the following steps：
Excess sludge, conditioner are well mixed with by decabromodiphenyl oxide contaminated soil, regulation moisture content, carbon-nitrogen ratio, suitable
At a temperature of, sludge aerobic compost is carried out by force ventilated mode, timing sampling determines the concentration of decabromodiphenyl oxide in heap body.
It is preferred that, described conditioner is sawdust.
It is preferred that, described excess sludge, conditioner are well mixed with by decabromodiphenyl oxide contaminated soil, its quality proportioning
For 10:3:（1~3）.
It is preferred that, the concentration by decabromodiphenyl oxide in decabromodiphenyl oxide contaminated soil is 15 ~ 25 mg/kg.
It is preferred that, described moisture content is 45% ~ 55%, and the carbon-nitrogen ratio is 22 ~ 28:1.
It is preferred that, described preference temperature is 25 DEG C ~ 35 DEG C.
It is preferred that, described forced ventilation flow is 0.30 ~ 0.40 m3/h, and draft type is intermittent ventilation, during ventilation
Long 1 min, stops 10 ~ 20 min.
It is preferred that, described timing sampling is measured as every 7 d sampling once, and during sampling along with stirring with
Turning.
It is preferred that, described excess sludge is the sludge after sewage treatment plant's dehydration.
Compared with prior art, the present invention has advantages below：
The present invention removes decabromodiphenyl oxide in soil using composting technology, and waste recycling is with low cost, and effect is good, is soil
Restoration of the ecosystem provides another thinking.Draft type is intermittent ventilation, saves the energy.
Embodiment
The present invention is further described by following examples to the specific implementation of the present invention, but the embodiment party of the present invention
Formula not limited to this.
Embodiment 1
By excess sludge, sawdust and by decabromodiphenyl oxide contaminated soil, according to mass ratio 10:3:1 it is well mixed be placed in it is anti-
Answer in device, compost quality is that the concentration of decabromodiphenyl oxide in 19 kg, whole heap body is 1.07 mg/kg.By the moisture content of heap body
Adjust 45wt%, carbon-nitrogen ratio regulation to 22:1, in the environment for being placed on 25 DEG C, it is 0.30 m3/h, every 10 to control air mass flow
Min is aerated once, and aeration time continues 1 min.Once, sample is used for determining ten in heap body for the whole every 7 d samplings turning of heap body
The situation of change of bromo biphenyl ether concentration and the content of organic matter.
Heap body maintains 5 d more than 55 DEG C, in 35 d, and the whole heap body content of organic matter reduces 8.23%, ten bromines
The clearance of Biphenyl Ether has reached 56.08% in 14 d, and 62.81% has been reached in 35 d.
Embodiment 2
By excess sludge, sawdust and by decabromodiphenyl oxide contaminated soil, according to quality proportioning 10:3:2 well mixed are placed in
In reactor, compost quality is that the concentration of decabromodiphenyl oxide in 19 kg, whole heap body is 2.67 mg/kg.By the aqueous of heap body
Rate regulation is adjusted to 25 to 50 wt%, carbon-nitrogen ratio:1, in the environment for being placed on 30 DEG C, it is 0.35 m3/h to control air mass flow, often
15 min are aerated once, and aeration time continues 1 min.Once, sample is used for determining heap body for the whole every 7 d samplings turning of heap body
The situation of change of middle decabromodiphenyl oxide concentration and the content of organic matter.
Heap body maintains 7 d more than 55 DEG C, in 35 d, and the whole heap body content of organic matter reduces 13.81%, ten
The clearance of bromo biphenyl ether has reached 60.73% in 14 d, and 73.47% has been reached in 35 d.
Embodiment 3
By excess sludge, sawdust and by decabromodiphenyl oxide contaminated soil, according to quality proportioning 10:3:3 well mixed are placed in
In reactor, compost quality is 19 kg, and whole heap body decabromodiphenyl oxide concentration is 4.69 mg/kg.The moisture content of heap body is adjusted
Save to 55 wt%, carbon-nitrogen ratio regulation to 28:1, in the environment for being placed on 35 DEG C, it is 0.40 m3/h, every 20 to control air mass flow
Min is aerated once, and aeration time continues 1 min.Once, sampling is used for determining ten in heap body for the whole every 7 d samplings turning of heap body
The situation of change of bromo biphenyl ether concentration and the content of organic matter.
Heap body maintains 5 d more than 55 DEG C, in 35 d, and the whole heap body content of organic matter reduces 9.16%, ten bromines
The concentration of Biphenyl Ether has reached 56.36% in 14 d, and 59.39% has been reached in 35 d.
Claims (10)
1. a kind of method that utilization composting technology removes decabromodiphenyl oxide in soil, it is characterised in that comprise the following steps：
First excess sludge, conditioner are well mixed with by decabromodiphenyl oxide contaminated soil, regulation moisture content, carbon-nitrogen ratio, then
Sludge aerobic compost is carried out by force ventilated mode, and timing sampling determines the concentration of decabromodiphenyl oxide in heap body.
2. the method that a kind of utilization composting technology according to claim 1 removes decabromodiphenyl oxide in soil, its feature exists
In described excess sludge is the sludge after sewage treatment plant's dehydration.
3. the method that a kind of utilization composting technology according to claim 1 removes decabromodiphenyl oxide in soil, its feature exists
In described conditioner is sawdust.
4. the method that a kind of utilization composting technology according to claim 1 removes decabromodiphenyl oxide in soil, its feature exists
In described excess sludge, conditioner are with being 10 by the quality proportioning of decabromodiphenyl oxide contaminated soil:3:（1~3）.
5. the method that a kind of utilization composting technology according to claim 1 removes decabromodiphenyl oxide in soil, its feature exists
In the concentration by decabromodiphenyl oxide in decabromodiphenyl oxide contaminated soil is 15 ~ 25 mg/kg.
6. the method that a kind of utilization composting technology according to claim 1 removes decabromodiphenyl oxide in soil, its feature exists
In described moisture content is adjusted to 45% ~ 55%.
7. the method that a kind of utilization composting technology according to claim 1 removes decabromodiphenyl oxide in soil, its feature exists
In the carbon-nitrogen ratio is adjusted to（22~28）:1.
8. the method that a kind of utilization composting technology according to claim 1 removes decabromodiphenyl oxide in soil, its feature exists
In the temperature for carrying out sludge aerobic compost is 25 DEG C ~ 35 DEG C.
9. the method that a kind of utilization composting technology according to claim 1 removes decabromodiphenyl oxide in soil, its feature exists
In described force ventilated flow is 0.30 ~ 0.40 m3/h, and draft type is intermittent ventilation, and divulge information the min of duration 1, stops
Only 10 ~ 20 min.
10. the method that a kind of utilization composting technology according to claim 1 removes decabromodiphenyl oxide in soil, its feature exists
In, described timing sampling is sampled once for every 7 d, and along with stirring and turning during sampling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290256.4A CN107081332A (en) | 2017-04-28 | 2017-04-28 | A kind of method that utilization composting technology removes decabromodiphenyl oxide in soil |
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| CN201710290256.4A CN107081332A (en) | 2017-04-28 | 2017-04-28 | A kind of method that utilization composting technology removes decabromodiphenyl oxide in soil |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445413A (en) * | 2008-12-22 | 2009-06-03 | 湖南大学 | Method for eliminating chlorpyriphos from soil by composting |
| CN101733272A (en) * | 2010-01-26 | 2010-06-16 | 华南农业大学 | Remediation method of decabromodiphenyl oxide contaminated soil |
| CN102085529A (en) * | 2009-12-04 | 2011-06-08 | 中国科学院生态环境研究中心 | Method for repairing polycyclic aromatic hydrocarbon polluted soil by using residual active sludge |
| CN104056855A (en) * | 2014-06-27 | 2014-09-24 | 山鑫科陶科技（北京）股份有限公司 | Reparation method of polluted soil |
| CN104307870A (en) * | 2014-02-28 | 2015-01-28 | 浙江农林大学 | Bioslurry repair method for poly brominated diphenyl ethers polluted soil, and special equipment |
| CN106424129A (en) * | 2016-10-13 | 2017-02-22 | 湖南大学 | Method for remedying soil contaminated with 2,2',4,4'-tetrabromodiphenyl ether |
-
2017
- 2017-04-28 CN CN201710290256.4A patent/CN107081332A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445413A (en) * | 2008-12-22 | 2009-06-03 | 湖南大学 | Method for eliminating chlorpyriphos from soil by composting |
| CN102085529A (en) * | 2009-12-04 | 2011-06-08 | 中国科学院生态环境研究中心 | Method for repairing polycyclic aromatic hydrocarbon polluted soil by using residual active sludge |
| CN101733272A (en) * | 2010-01-26 | 2010-06-16 | 华南农业大学 | Remediation method of decabromodiphenyl oxide contaminated soil |
| CN104307870A (en) * | 2014-02-28 | 2015-01-28 | 浙江农林大学 | Bioslurry repair method for poly brominated diphenyl ethers polluted soil, and special equipment |
| CN104056855A (en) * | 2014-06-27 | 2014-09-24 | 山鑫科陶科技（北京）股份有限公司 | Reparation method of polluted soil |
| CN106424129A (en) * | 2016-10-13 | 2017-02-22 | 湖南大学 | Method for remedying soil contaminated with 2,2',4,4'-tetrabromodiphenyl ether |
Non-Patent Citations (1)
| Title |
|---|
| 占水娥: "沉积物中十溴联苯醚的堆肥降解研究", 《中国优秀硕士学位论文全文数据库》 * |
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Application publication date: 20170822 |