CN107176777A - The device and technique of a kind of utilization anaerobe processing Fenton iron mud - Google Patents
The device and technique of a kind of utilization anaerobe processing Fenton iron mud Download PDFInfo
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- CN107176777A CN107176777A CN201710350638.1A CN201710350638A CN107176777A CN 107176777 A CN107176777 A CN 107176777A CN 201710350638 A CN201710350638 A CN 201710350638A CN 107176777 A CN107176777 A CN 107176777A
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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
- C02F11/02—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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2846—Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Biodiversity & Conservation Biology (AREA)
- Treatment Of Sludge (AREA)
Abstract
A kind of utilization anaerobe handles the device of Fenton iron mud, includes being provided with mud guard in the cylinder of upflow anaerobic sludge blanket reactor, cylinder, three phase separator, water inlet is connected with cylinder body bottom, it is characterised in that：Hollow insulation chamber of the cylinder provided with connection recirculated water bath.The technique for handling Fenton iron mud using said apparatus：Take pending Fenton iron mud to put into water regulating reservoir, run upflow anaerobic sludge blanket reactor cylinder, control hydraulic detention time, temperature, pH.Iron cement composite waste is introduced in cylinder, acted on by dissimilatory iron reduction, dissimilatory iron reduction bacterium is enriched with using the ferric iron in iron cement, the removal to iron cement and useless Organic substance in water is realized, while generating energy gas.Technical solution of the present invention is accessible to be had the technical effect that：Effective removal to organic matter in iron cement is realized, the clearance of chemical oxygen demand of waste water is improved, methane production is improved.Processing be particularly suitable for use in rich in including aromatic hydrocarbons and the organic wastewaters containing long chain fatty acids such as benzene, phenol.
Description
Technical field
The present invention relates to the field of solid waste resource recovery technology.
Background technology
Fenton, fenton-type reagent technique are a kind of catalytic oxidation technologies progressively promoted in recent years, the technology utilization
Fe under acid condition2+And Fe3+Be catalyzed hydrogen peroxide produce strong oxidizing property hydroxyl radical free radical (OH) by the difficult degradation in waste water into
Divide oxidation.Reaction can be carried out at normal temperatures and pressures, and technological process is simple, with huge industrialization promotion potentiality, has succeeded
It is applied to the wastewater treatments such as dyeing waste water, oily waste water, phenol wastewater, coking chemical waste water, nitrobenzene-containing waste water, diphenylamines waste water
In.But the oxidation reaction of hydroxyl radical free radical not only occurs in Fenton courses of reaction, while iron hydroxide flco also can be to having
Machine thing and other pollutants produce certain flocculation, so as to be inevitably generated substantial amounts of iron containing sludge.Fenton
Sludge can be classified as dangerous solid waste, even if moisture content is still 80% or so after dewatering, and contain a large amount of organic matters and heavy metal.
If improper conduct oneself well comprehends many harm of generation, such as：Iron cement directly discharges the riverbed that can deposit, severe contamination water body；In iron cement
Containing substantial amounts of bacterial virus, the health of the mankind can be seriously endangered by being directly exposed in environment；If directly filled, iron cement wadding
Body absorption, the organic matter meeting corruption of parcel, stench, trigger a series of environmental problems.Therefore the processing of Fenton iron mud has turned into
Restrict the key of Fenton technology further genralrlizations.
Traditional Fenton iron mud method of disposal is mainly the methods such as cement stabilizing, burning, solidification.According to sludge stabilization
Although the method filled after change, immobilization may insure that solid waste is dealt carefully with, and prevent secondary pollution, but all only
The toxicity and transportable property of waste are the reduction of, the organic matter spoilage problem in iron cement is not eradicated.Although burning method can be with
It is carbon dioxide and water by organic matter exhaustive oxidation, but flying for generation is burned containing substantial amounts of iron and part heavy metal in iron cement
Ash needs further processing.
Anaerobic Microbiological Treatment Technology is one of current organic wastewater, the maximally effective technology of waste process field.Waste water, Gao Gu
Organic matter in waste is acted on by the common metabolic of multiple-microorganism, is eventually converted to water, carbon dioxide, methane, vulcanization
Hydrogen etc..And iron is one of necessary element of microorganism growth, the average content in the earth's crust is about 5.6% or so, there is shape
Formula has Fe0, Fe2+, Fe3+, wherein based on the existence form of Fe (III) mineral.As life on earth most ancient breathing pattern,
Iron breathing is microorganism dissimilatory iron reduction, and it plays an important role in the geologic cycle of iron.In this process, microorganism utilizes
Fe (III) is reduced to Fe (II) while oxidation of organic compounds and therefrom obtains energy by Fe (III) as electron acceptor.Cause
The oxidative degradation of organic matter has been coupled for microorganism dissimilatory iron reduction process, gradually be applied to biological metallurgy, heavy metal (uranium,
Chromium, arsenic etc.) pollution environment biological prosthetic and petrochemical industry class organic sewage biodegradation.Studies have reported that ferric add
The percolate rich in sulfate ion and the anaerobic fermentation efficiency of long chain fatty acids can be promoted；Also there is research ferric iron
Influence to cellulosic waste anaerobic methane production gas process, research finds FeCl3Addition being capable of reinforced anaerobic microorganism pair
The destruction of cellulose crystallity, ferric iron is to fields such as domestic waste, agricultural production discarded object, production of forestry discarded objects
Methanation, which is utilized, has certain application prospect.But have no by the use of Fenton iron mud as ferric iron source of iron to promote anaerobic digestion
Relevant report.
The content of the invention
The present invention proposes a kind of technology of utilization anaerobe digestion process Fenton iron mud.On the one hand, anaerobism is utilized
The advantage of digestion effectively removes the organic matter in iron cement, on the other hand based on dissimilatory iron reduction mechanism, with the trivalent in iron cement
Iron carrys out the efficiency of reinforced anaerobic digestion of organic matter as the electron acceptor of microorganism dissimilatory iron reduction, improves anaerobic methane yield.
Specifically technical scheme is：A kind of utilization anaerobe handles the device of Fenton iron mud, it is characterised in that：Bag
Include and be sequentially provided with sludge reaction layer in the cylinder provided with the upflow anaerobic sludge blanket reactor for taking lid, the cylinder from bottom to top
With sludge suspension layer, mud guard is fixedly arranged above in cylinder, three phase separator is fixed under lid, the outer top of cylinder is provided with out
Water pipe.Water inlet regulating reservoir is connected through intake pump by water inlet pipe with sludge reaction layer bottom in cylinder, it is characterised in that：Cylinder is set
Have and be connected above hollow insulation chamber, recirculated water bath by circulating water pipe i with the top of hollow insulation chamber and lower section passes through circulation
Water pipe ii and water circulating pump are connected with the bottom of hollow insulation chamber.
A kind of utilization anaerobe of use said apparatus handles the technique of Fenton iron mud, including following processes：
1) take pending Fenton iron mud to be dehydrated, make the iron cement moisture content after dehydration 80~90%, most preferably
80%, determine the iron-holder of iron cement；
2) iron cement after processing is put into water inlet regulating reservoir in mass ratio and be sufficiently mixed with pending waste water, make iron cement
Mass fraction (in terms of ferric iron) is maintained at 10~20g/L or so, most preferably 20g/L；
3) recirculated water bath is opened, it is 37 DEG C to maintain circulating water temperature, opens water circulating pump, recirculated water is passed through recirculated water
Pipe enters hollow insulation chamber, and it is 37 DEG C to maintain upflow anaerobic sludge blanket reactor cylinder body temperature；
4) intake pump is opened, the waste water of mixing is entered the cylinder of above-mentioned upflow anaerobic sludge blanket reactor through water inlet pipe
Body, reaction temperature is 30~40 DEG C, and optimal is 37 DEG C, and hydraulic detention time is 24h；
5) waste water produces energy gas by sludge reaction layer, and the gas of generation is collected by three phase separator；
6) water outlet after handling is discharged by outlet pipe.
Compared with prior art, technical scheme has the advantages that：
1. anaerobic digestion process is combined with the disposal of Fenton iron mud, it is not necessary to which extra input energy can effectively be located
Put the organic matter in Fenton iron mud.2. alienation is effectively enriched with using the ferric iron in iron cement based on dissimilatory iron reduction mechanism
Iron-reducing bacterium.3. the ferrous iron through dissimilatory iron reduction dissolution is directly related to the disposal ability of organic matter with anaerobic reactor, and two
Growth of the dissolution of valency iron to microorganism in anaerobic reactor, which is served, energetically to be acted on.4. ferrous dissolution accelerates anaerobism
The granulating degree of sludge in reactor, improves the disposal ability and the ability to changes in environmental conditions of reactor, that is, reacts
The stability of device.
Brief description of the drawings
Shared 3, the accompanying drawing of the present invention, wherein：
Fig. 1 handles the apparatus structure schematic diagram of Fenton iron mud for a kind of utilization anaerobe of the invention.
Fig. 2 is Fig. 1 M-M sections.
Fig. 3 handles the technological principle schematic diagram of Fenton iron mud for a kind of utilization anaerobe of the invention.
In Fig. 1：1st, intake regulating reservoir, 2, intake pump, 3, water inlet pipe, 4, sludge reaction layer, 5, suspended sludge layer, 6, gear mud
Plate, 7, outlet pipe, 8, three phase separator, 9, cover on reactor, 10, circulating water pipe i, 11, recirculated water bath, 12, water circulating pump,
13rd, hollow insulation chamber, 14, cylinder, 15, circulating water pipe ii.
Embodiment
(1) application mechanism of the present invention is dissimilatory iron reduction mechanism, the dissimilatory iron reduction mechanism as shown in figure 3,
The metabolic process of life of microorganism needs respiration, and the vital metabolic of dissimilatory iron reduction bacterium is using organic matter as electron donor, and three
Valency iron is electron acceptor, while oxidation of organic compounds is carbon dioxide and water, by electron transmission to ferric iron, makes ferric iron also
Originally it was divalence, and obtains energy in this process for life growth.Dissimilatory iron reduction bacterium compared to other anaerobes,
There are stronger decomposition and conversion capability to organic matter especially macromolecular and hard-degraded substance.Generated after macromolecular substances degraded
Small-molecule substance is available for methanogen to carry out energy recovery using methane is generated.Added Fenton iron mud as ferric iron source of iron
, can be because of dissimilatory iron reduction effect enrichment dissimilatory iron reduction bacterium, when waste water flows through sludge blanket, having in waste water into anaerobic reactor
Machine thing can be by dissimilatory iron reduction bacterium oxidation generation carbon dioxide and water, while obtained electronics is used to reduce by dissimilatory iron reduction bacterium
Ferric iron simultaneously therefrom obtains energy for life growth and energetic supersession.
(2) the present invention relates to a kind of upflow anaerobic sludge blanket reactor, reactor as shown in figure 1, provided with taking lid 9
The cylinder 14 of upflow anaerobic sludge blanket reactor, the cylinder 14 is provided with hollow insulation chamber 13.Up-flow anaerobic sludge blanket reacts
Sludge reaction layer 4 and sludge suspension layer 5 are sequentially arranged with the cylinder 14 of device from bottom to top.Mud guard is fixedly arranged above in cylinder 14
6, three phase separator 8 is fixed under lid 9.The top of recirculated water bath 11 passes through circulating water pipe i-10 and hollow insulation chamber 13
Top is connected and lower section is connected by circulating water pipe ii-15 and water circulating pump 12 with the bottom of hollow insulation chamber 13.Water inlet is adjusted
Section pond 1 is connected through intake pump 2 by water inlet pipe 3 with 4 bottom of sludge reaction layer in cylinder 14.When opening intake pump 2, water inlet is adjusted
Waste water in section pond flows through intake pump 2, water inlet pipe 3, sludge reaction layer 4 and sludge suspension layer 5 successively, finally at delivery port 7
Outflow discharge.
(3) with reference to accompanying drawing 1 and example, the present invention will be further described, and Anaerobic Digestion is utilized as shown in Figure 2
The technique of Fenton iron mud comprises the following steps：
Using percolate as pending waste water, percolate COD is 10000mg/L, and ammonia nitrogen concentration is
1800mg/L。
Open water circulating pump 12, recirculated water by recirculated water bath 11 flow through successively water circulating pump 12, circulating water pipe ii-15,
Hollow insulation chamber 13, circulating water pipe i-10 simultaneously return to recirculated water bath, maintain the temperature of upflow anaerobic sludge blanket reactor cylinder 14
Spend for 37 DEG C.
Pending Fenton iron mud is taken, certain dehydration is carried out to reduce iron cement volume, contains the iron cement after dehydration
Water rate is 80~90%, most preferably 80%, and the iron-holder for determining iron cement is 40%, and content of organics is 20%, other material bags
Include inorganic matter and heavy metal ion.
By the iron cement after processing with fully mixed with garbage leachate wastewater in certain volume ratio input water inlet regulating reservoir 1
Close, the mass concentration (in terms of ferric iron) of iron cement is maintained at 10~20g/L or so, most preferably 20g/L.
Intake pump 2 is opened, regulation flow of inlet water makes hydraulic detention time be 24h, makes the waste water mixed into water regulating reservoir 1
Flow through intake pump 2, water inlet pipe 3 successively to enter in upflow anaerobic sludge blanket reactor 14, water inlet current from bottom to top can be with
Playing stirring action makes pending waste water fully be contacted with the anaerobe in sludge reaction layer 4, different in anaerobe
It is divalence by the ferric iron back contained in iron cement of intaking to change iron-reducing bacterium by dissimilatory iron reduction mechanism, and therefrom obtains energy
Amount, improves to the macromolecular in percolate and the removal of hard-degraded substance and conversion, promotes anaerobic digestion, improves methane production
Amount.The organic matter in iron cement can be removed using the anaerobe in sludge reaction layer 4 simultaneously.
When waste water is by sludge reaction layer 4, energy gas (dioxy can be produced because of the anaerobic digestion effect of anaerobe
Change carbon and methane), and discharged in sludge suspension layer 5, the energy gas of generation is collected by three phase separator 8, the energy
Reclaim.
Waste water after treatment is final to flow out discharge at delivery port 7.
Percolate after the technology of the present invention is handled, COD removal efficiency is 76%, with not adding iron
The reactor of mud improves 10%, water outlet COD reduction by 28%, methane production raising compared to COD clearance
14%.
Claims (2)
1. a kind of utilization anaerobe handles the device of Fenton iron mud, it is characterised in that：Including provided with taking the upper of lid (9)
Sludge reaction layer (4) and dirt are sequentially provided with the cylinder (14) of flow anaerobic sludge bed reactor, the cylinder (14) from bottom to top
Mud guard (6) is fixedly arranged above in mud superposed layer (5), the cylinder (14), three phase separator (8) is fixed on the upper lid
(9) under, top is provided with outlet pipe (7) to the cylinder (14) outside；Intake regulating reservoir (1) through intake pump (2) by water inlet pipe (3) with
Described interior sludge reaction layer (4) bottom of cylinder (14) is connected, it is characterised in that：The cylinder (14) is provided with hollow insulation chamber
(13), it is connected and lower section with the top of the hollow insulation chamber (13) by circulating water pipe i (10) above recirculated water bath (11)
It is connected by circulating water pipe ii (15) and water circulating pump (12) with the bottom of the hollow insulation chamber (13).
2. a kind of usage right requires that the utilization anaerobe of 1 described device handles the technique of Fenton iron mud, including following
Process：
1) take pending Fenton iron mud to be dehydrated, make the iron cement moisture content after dehydration 80~90%, most preferably 80%,
Determine the iron-holder of iron cement；
2) iron cement after processing is put into water inlet regulating reservoir (1) in mass ratio and be sufficiently mixed with pending waste water, make iron cement
Mass fraction (in terms of ferric iron) is maintained at 10~20g/L or so, most preferably 20g/L；
3) recirculated water bath (11) is opened, it is 37 DEG C to maintain circulating water temperature, opens water circulating pump (12), makes recirculated water by following
Ring water pipe (15) enters hollow insulation chamber (13), and it is 37 DEG C to maintain upflow anaerobic sludge blanket reactor cylinder (14) interior temperature；
4) intake pump (2) is opened, the waste water of mixing is entered the cylinder of above-mentioned upflow anaerobic sludge blanket reactor through water inlet pipe (3)
Body (14), reaction temperature is 30-40 DEG C, and optimal is 37 DEG C, and hydraulic detention time is 24h；
5) waste water produces energy gas by sludge reaction layer (4), and the gas of generation is received by three phase separator (8)
Collection；
6) water outlet after handling is discharged by outlet pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710350638.1A CN107176777A (en) | 2017-05-18 | 2017-05-18 | The device and technique of a kind of utilization anaerobe processing Fenton iron mud |
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| CN201710350638.1A CN107176777A (en) | 2017-05-18 | 2017-05-18 | The device and technique of a kind of utilization anaerobe processing Fenton iron mud |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328719A (en) * | 2018-03-21 | 2018-07-27 | 苏州科技大学 | A kind of up flow type circulation fluidized bed advanced oxidation reaction unit and its process |
| CN110468023A (en) * | 2019-07-31 | 2019-11-19 | 安徽环境科技集团股份有限公司 | A kind of promotion anaerobic fermentation of organisms device |
| CN111689666A (en) * | 2020-06-19 | 2020-09-22 | 陕西科技大学 | Method for improving methane production by anaerobic fermentation of excess sludge |
| CN113371849A (en) * | 2021-07-29 | 2021-09-10 | 江西师范大学 | Fenton iron mud separation and recycling method and device |
| CN114455790A (en) * | 2022-03-02 | 2022-05-10 | 南京大学 | Method for stably and efficiently producing nitrite based on iron ammonia oxidation and application thereof |
| CN115784421A (en) * | 2022-10-19 | 2023-03-14 | 北京城市排水集团有限责任公司 | Method for promoting aerobic sludge granulation by adding Fenton iron mud |
| CN116143365A (en) * | 2022-12-12 | 2023-05-23 | 北京城市排水集团有限责任公司 | Fenton iron mud biological treatment device and method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328719A (en) * | 2018-03-21 | 2018-07-27 | 苏州科技大学 | A kind of up flow type circulation fluidized bed advanced oxidation reaction unit and its process |
| CN108328719B (en) * | 2018-03-21 | 2023-09-15 | 苏州科技大学 | Upflow circulating bed advanced oxidation reaction device and process method thereof |
| CN110468023A (en) * | 2019-07-31 | 2019-11-19 | 安徽环境科技集团股份有限公司 | A kind of promotion anaerobic fermentation of organisms device |
| CN111689666A (en) * | 2020-06-19 | 2020-09-22 | 陕西科技大学 | Method for improving methane production by anaerobic fermentation of excess sludge |
| CN113371849A (en) * | 2021-07-29 | 2021-09-10 | 江西师范大学 | Fenton iron mud separation and recycling method and device |
| CN114455790A (en) * | 2022-03-02 | 2022-05-10 | 南京大学 | Method for stably and efficiently producing nitrite based on iron ammonia oxidation and application thereof |
| CN115784421A (en) * | 2022-10-19 | 2023-03-14 | 北京城市排水集团有限责任公司 | Method for promoting aerobic sludge granulation by adding Fenton iron mud |
| CN116143365A (en) * | 2022-12-12 | 2023-05-23 | 北京城市排水集团有限责任公司 | Fenton iron mud biological treatment device and method |
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Application publication date: 20170919 |