CN107244789A - A kind of bioleaching system and the method for sludge treatment using the system - Google Patents
A kind of bioleaching system and the method for sludge treatment using the system Download PDFInfo
- Publication number
- CN107244789A CN107244789A CN201710429921.3A CN201710429921A CN107244789A CN 107244789 A CN107244789 A CN 107244789A CN 201710429921 A CN201710429921 A CN 201710429921A CN 107244789 A CN107244789 A CN 107244789A
- Authority
- CN
- China
- Prior art keywords
- sludge
- bioleaching
- handled
- pond
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004062 sedimentation Methods 0.000 claims abstract description 19
- 238000001556 precipitation Methods 0.000 claims abstract description 9
- 230000018044 dehydration Effects 0.000 claims abstract description 5
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 235000016709 nutrition Nutrition 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 5
- 241000894006 Bacteria Species 0.000 claims description 3
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 claims 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052717 sulfur Inorganic materials 0.000 abstract description 11
- 239000011593 sulfur Substances 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 abstract description 2
- 239000002361 compost Substances 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004174 sulfur cycle Methods 0.000 description 1
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
- C02F11/02—Biological treatment
-
- 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
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- 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
-
- 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
- Y02W10/20—Sludge processing
Abstract
The present invention relates to sewage treatment area, a kind of bioleaching system and the method for sludge treatment using the system are especially disclosed.The technical solution adopted by the present invention is：A kind of bioleaching system, bioleaching pond, for carrying out bioleaching processing to sludge；Sedimentation basin, is connected with the bioleaching pond, for carrying out gravitational settling in sedimentation basin to the sludge after bioleaching is handled；Anaerobic pond, is connected with the sedimentation basin, for carrying out reduction treatment to the sludge Jing Guo precipitation process；Mechanical dehydration machine, is connected with anaerobic pond, for carrying out dewater treatment to sludge.The present invention has the characteristics of can reducing sludge sulfur content, water content, increase sludge pH.
Description
Technical field
The present invention relates to sewage treatment area, a kind of bioleaching system and the sludge using the system are especially disclosed
Processing method.
Background technology
Traditional sludge is during bioleaching conditioning, it is necessary to add substantial amounts of reducible sulfur as bioleaching flora
Nutritional substrate, after treatment, most of reducible sulfur are oxidized to sulfate.A portion sulfate is arranged with supernatant
Go out, remaining sulfate is stayed in sludge, while there is the reducible sulfur not utilized also to remain in sludge, cause in sludge
Sulfur content is dramatically increased, and typically can reach more than the 1% of sludge butt.Other sludge is after bioleaching conditioning, and its pH typically exists
5.0 it is following.Relatively low pH value and higher sulfur content can cause serious influence to sludge subsequent treatment, can be made during land use
Into the salinization of soil, burning can produce substantial amounts of SO2Discharge, anaerobic digestion can produce substantial amounts of H2S gases, it is therefore desirable to take
Corrective measure.
The content of the invention
The present invention overcomes the shortcomings of that prior art is present can reduce sludge sulfur content, water content, increase dirt there is provided one kind
The bioleaching system of mud pH value.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of bioleaching system, including：
Bioleaching pond, for carrying out bioleaching processing to sludge；During processing, by the sludge after concentration, its solid content 3 ~ 8%,
Bioleaching processing is carried out, the nutritional substrate using reducible sulfur as main component, after bioleaching is handled, portion is during which added
Divide sludge reflux, remaining stands in sedimentation basin, is then discharged out supernatant；
Sedimentation basin, is connected with the bioleaching pond, for being carried out to the sludge after bioleaching is handled in sedimentation basin
Gravitational settling；
Anaerobic pond, is connected with the sedimentation basin, for carrying out reduction treatment to the sludge Jing Guo precipitation process；To dirt in anaerobic pond
Mud is stirred, after 20 ~ 50h processing, and the sulfur content that the pH of sludge is brought up in 6.0 ~ 8.0, sludge reduces 60 ~ 90%.
Mechanical dehydration machine, is connected with anaerobic pond, for carrying out dewater treatment to sludge.
According to actual needs, dewaterer can also be using folded spiral shell dewaterer, electrodialysis dewaterer, centrifugal dehydrator.
Using a kind of method for sludge treatment of bioleaching system, comprise the following steps：
Step 1: carrying out bioleaching to sludge；The sludge after concentration is subjected to bioleaching processing first, during which added with also
Originality sulphur is the nutritional substrate of main component, is handled by bioleaching；
Step 2: precipitation；The sludge handled by step one bioleaching is stood in sedimentation basin, supernatant is then discharged out；
Step 3: anaerobic reduction is handled；Sludge is handled using sulfate reducing bacteria, during processing, sludge is stirred,
Micro-vacuum state is kept in anaerobic pond simultaneously；Micro-vacuum state is kept to may insure that excluding reduction in time produces in anaerobic pond
H2S gases；
Step 4: being dehydrated using diaphragm plate frame dewaterer to the sludge handled by step 3；Moisture content after dehydration can
Reach 55 ~ 80%.
Further, the sludge part handled in the step one by bioleaching enters sedimentation basin and carries out place of settling
Reason, partial sludge backflow.
Further, the sludge handled in the step 3 by anaerobic reduction, is partly into step 4, and a part is returned
It flow to anaerobic pond.
The present invention has following beneficial effect compared with prior art：
1st, the sulfur content in sludge reduces 60 ~ 90%, to the notable drop of follow-up compost, burning, landfill or land use adverse effect
It is low；
2nd, the sludge pH after handling brings up to 6.0 ~ 8.0 by less than 5.0；
3rd, the moisture content of sludge can reach 55 ~ 80% after handling, and then can carry out aerobic compost or incineration disposal；
4th, the H produced during anaerobic reduction is utilized2The source of the gas that S is aerated as bioleaching, is absorbed by sludge organism leaching
H in gas2S constitutes the sulfur cycle in Treatment of Sludge, realizes recycling for material as nutritional substrate.
Brief description of the drawings
Fig. 1 is a kind of bioleaching system structure diagram.
Embodiment
With reference to the accompanying drawings and examples, the embodiment to the present invention is described in further detail, and is implemented below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
It is a kind of bioleaching system as shown in Figure 1, including：
Bioleaching pond 1, for carrying out bioleaching processing to sludge；
Sedimentation basin 2, is connected with bioleaching pond 1, for being weighed to the sludge after bioleaching is handled in sedimentation basin
Power is precipitated；
Anaerobic pond 3, is connected with sedimentation basin 2, for carrying out reduction treatment to the sludge Jing Guo precipitation process；With mechanical dehydration machine 4,
It is connected with anaerobic pond 3, for carrying out dewater treatment to sludge.
Using the method for sludge treatment of the bioleaching system, comprise the following steps：
Step 1: carrying out bioleaching to sludge；The sludge after concentration is subjected to bioleaching processing first, during which added with also
Originality sulphur is the nutritional substrate of main component, is handled by bioleaching；
Step 2: precipitation；The sludge handled by step one bioleaching is stood in sedimentation basin, supernatant is then discharged out；
Step 3: anaerobic reduction is handled；Sludge is handled using sulfate reducing bacteria, during processing, sludge is stirred,
Micro-vacuum state is kept in anaerobic pond simultaneously；
Step 4: being dehydrated using diaphragm plate frame dewaterer to the sludge handled by step 3.
After testing, sulfur content in sludge reduces 80%, and sludge pH brings up to containing for sludge after 8.0, processing by less than 5.0
Water rate reaches 60%, then can carry out aerobic compost or incineration disposal.
Further, as preferred embodiment, the step of method for sludge treatment one in handled by bioleaching
Sludge part enters sedimentation basin and carries out precipitation process, partial sludge backflow.
Further, as preferred embodiment, the step of method for sludge treatment three in handled by anaerobic reduction
Sludge, is partly into step 4, and a part is back to anaerobic pond.
Further, as preferred embodiment, three the step of method for sludge treatment in the H that produces2S gases are used to walk
Bioleaching pond is aerated in rapid one.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, although with reference to foregoing reality
Apply example the present invention is described in detail, for those skilled in the art, it still can be to foregoing each implementation
Technical scheme described in example is modified, or equivalent substitution, all essences in the present invention are carried out to which part technical characteristic
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (5)
1. a kind of bioleaching system, it is characterised in that including：
Bioleaching pond（1）, for carrying out bioleaching processing to sludge；
Sedimentation basin（2）, with the bioleaching pond（1）Connection, for the sludge after bioleaching is handled in sedimentation basin
Middle carry out gravitational settling；
Anaerobic pond（3）, with the sedimentation basin（2）Connection, for carrying out reduction treatment to the sludge Jing Guo precipitation process；
With mechanical dehydration machine（4）, with anaerobic pond（3）Connection, for carrying out dewater treatment to sludge.
2. using a kind of method for sludge treatment of bioleaching system as claimed in claim 1, it is characterised in that including following
Step：
Step 1: carrying out bioleaching to sludge；The sludge after concentration is subjected to bioleaching processing first, during which added with also
Originality sulphur iron is the nutritional substrate of main component, is handled by bioleaching；
Step 2: precipitation；The sludge handled by step one bioleaching is stood in sedimentation basin, supernatant is then discharged out；
Step 3: anaerobic reduction is handled；Sludge is handled using sulfate reducing bacteria, during processing, sludge is stirred,
Micro-vacuum state is kept in anaerobic pond simultaneously；
Step 4: being dehydrated using diaphragm plate frame dewaterer to the sludge handled by step 3.
3. method for sludge treatment as claimed in claim 2, it is characterised in that：Handled in the step one by bioleaching
Sludge part enters sedimentation basin and carries out precipitation process, partial sludge backflow.
4. method for sludge treatment as claimed in claim 3, it is characterised in that：Handled in the step 3 by anaerobic reduction
Sludge, is partly into step 4, and a part is back to anaerobic pond.
5. method for sludge treatment as claimed in claim 4, it is characterised in that：The H produced in the step 32S gases are used to walk
Bioleaching pond is aerated in rapid one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710429921.3A CN107244789A (en) | 2017-06-09 | 2017-06-09 | A kind of bioleaching system and the method for sludge treatment using the system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710429921.3A CN107244789A (en) | 2017-06-09 | 2017-06-09 | A kind of bioleaching system and the method for sludge treatment using the system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107244789A true CN107244789A (en) | 2017-10-13 |
Family
ID=60019146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710429921.3A Pending CN107244789A (en) | 2017-06-09 | 2017-06-09 | A kind of bioleaching system and the method for sludge treatment using the system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107244789A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517604A (en) * | 2019-01-31 | 2020-08-11 | 江阴市周北污水处理有限公司 | Sludge sulfur reduction treatment system for industrial sewage treatment plant |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1329957C (en) * | 1988-04-29 | 1994-05-31 | John Glynn Henry | Process for removing metal contaminants from liquids and slurries |
| CN101863612A (en) * | 2010-07-06 | 2010-10-20 | 北京林业大学 | Method for improving sludge dewatering performance by combining bioleaching and dual conditioners |
| CN101898861A (en) * | 2009-12-11 | 2010-12-01 | 中国海洋大学 | Microorganism detoxification, and solidification and hazard-free treatment method for metal substrate sludge |
| CN101898859A (en) * | 2010-08-04 | 2010-12-01 | 娄底市裕德科技有限公司 | Method for removing heavy metals from sludge and special device thereof |
| CN105217911A (en) * | 2014-06-30 | 2016-01-06 | 北京中科国通环保工程技术有限公司 | A kind of bioleaching that utilizes reacts the technological process control carrying out sludge dewatering |
| CN105293852A (en) * | 2015-12-04 | 2016-02-03 | 山西省生态环境研究中心 | Method for synchronously coupling biological sludge leaching and conditioning as well as odor purification |
-
2017
- 2017-06-09 CN CN201710429921.3A patent/CN107244789A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1329957C (en) * | 1988-04-29 | 1994-05-31 | John Glynn Henry | Process for removing metal contaminants from liquids and slurries |
| CN101898861A (en) * | 2009-12-11 | 2010-12-01 | 中国海洋大学 | Microorganism detoxification, and solidification and hazard-free treatment method for metal substrate sludge |
| CN101863612A (en) * | 2010-07-06 | 2010-10-20 | 北京林业大学 | Method for improving sludge dewatering performance by combining bioleaching and dual conditioners |
| CN101898859A (en) * | 2010-08-04 | 2010-12-01 | 娄底市裕德科技有限公司 | Method for removing heavy metals from sludge and special device thereof |
| CN105217911A (en) * | 2014-06-30 | 2016-01-06 | 北京中科国通环保工程技术有限公司 | A kind of bioleaching that utilizes reacts the technological process control carrying out sludge dewatering |
| CN105293852A (en) * | 2015-12-04 | 2016-02-03 | 山西省生态环境研究中心 | Method for synchronously coupling biological sludge leaching and conditioning as well as odor purification |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517604A (en) * | 2019-01-31 | 2020-08-11 | 江阴市周北污水处理有限公司 | Sludge sulfur reduction treatment system for industrial sewage treatment plant |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171013 |
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