CN105753148B - A kind of powdery bio-carrier and its sewage water treatment method of sludge superelevation amount emission reduction - Google Patents
A kind of powdery bio-carrier and its sewage water treatment method of sludge superelevation amount emission reduction Download PDFInfo
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- CN105753148B CN105753148B CN201610199977.XA CN201610199977A CN105753148B CN 105753148 B CN105753148 B CN 105753148B CN 201610199977 A CN201610199977 A CN 201610199977A CN 105753148 B CN105753148 B CN 105753148B
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
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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
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention discloses a kind of powdery bio-carrier for biological sewage processing and its sewage water treatment methods of sludge superelevation amount emission reduction.The powdery bio-carrier is to cover to connect the biological dispersion membrane of one layer of long chain fatty acids amides on the porous carriers such as active carbon surface, its molecule water-wet side can effective dispersed mineral matter when carrying activated sludge, and microcosmic disintegration can be generated when creating sludge aging, promote the organic matter organism digestion degradation in minerals dissolution and sludge.Sewage treatment is carried out in conjunction with the collaboration strain for strengthening emission reduction, spoil disposal outlet is closed to existing processing system, apply the straightforward procedure of bio-carrier of the invention, sludge can be realized to recycle inside sewage disposal system, i.e. surplus sludge volume conforms exactly to biochemical system reflux requirement, external not spoil disposal, sludge emission reduction amount is greater than 95%, and effluent characteristics are improved.
Description
Technical field
The present invention relates at a kind of powdery bio-carrier of Biochemical method sewage and its sewage of sludge superelevation amount emission reduction
Reason method belongs to material and method for sludge emission reduction.
Background technique
Bioanalysis is most economical effective method in urban industry sewage treatment, and sewage treatment plant substantially uses activity
The Biochemical method sewage of sludge.Large and medium-sized sewage treatment plant of China from 1978 37 increase to more than 2800 seats in 2010, locate
Reason ability increases to 128,670,000 ton per days from 640,000 ton per days, and National urban wastewater treatment rate is up to 73%.Bioanalysis carries out dirty
Water process is that the degradation and removal of pollutant are realized by the vital movement of microorganism, and the supernatant after processing is up to standard is sterilized
After discharge, but 60~80% pollutant formed sludge enter sludge treating system, year sewage treatment plant from 1978 to 2010
The dewatered sludge of generation increases to 6800 ton per days from 150 ton per days, and for sludge to be incremented by per year over 10%, such as 50,000,000 tons wet
Sludge (80% is aqueous) is filled by 2m high, needs 40,000 mu of ground, such as all to burn every year, and only handling is with regard to over ten billion, stack and
Discharge will generate serious secondary pollution, only carry out processing more thoroughly to sludge from elimination pollution angle, sewage treatment
Purpose is just really achieved, and otherwise can only regard that will pollute from liquid-phase conversion is solid phase (or semi-solid phase) as.
Therefore it is a critically important environmental protection subject that low cost, which effectively solves its sludge problem,.Sludge emission reduction method has very
It is more, but all there is certain limitation.It is only that volume is slightly reduced such as sludge dewatering；Sludge directly utilizes, and risk or cost are very
It is high；There are also carry out ultrasonic grind to excess sludge, it is difficult to industrialize and minerals are also difficult to be reduced；Acid adding alkali chemolysis
Minerals add
Summary of the invention
Pursue the direction for facilitating the more thorough emission reduction sludge of low cost to be people's pursuit.In various sludge emission reduction measures
Strengthening biochemical process is a kind of cost-effective measure, but emission reduction effect is generally below 70%.Sludge is analyzed from ingredient is
It is made of water and solid particle, degradable content of organics is generally 40% in solid component, hardly degraded organic substance content
30%, content of mineral substances 30%, theoretically generally by it is biological reinforced can remove 70% sludge.Other 30% mine
Substance is mainly considered Ca, Mg carbonate and part of sulfuric acid salt, the Ca dissolved in source of sewage2+、Mg2+And titanium dioxide
Caused by carbon and the bacterium with sulfate radical etc. combine.Making minerals re-dissolve and prevent minerals from surviving or growing up is to strengthen biochemistry
The key of the further emission reduction of method.
If sludge flora does not adsorb minerals on microscopic vesicles, minerals are evenly dispersed little particulates, work as sludge
Reaching dating sludge group can be disintegrated, and organic matter therein is digested with small moleculeization release by biological bacteria, and titanium dioxide is discharged
Carbon, by tiny CaCO3With Ca (HCO3)2Form dissolution, tiny CaSO4It is redissolved under the slightly sour degree in part, then old sludge is just
It will reduce or disappear, so that it may realize the purpose without mud discharging.Based on this thinking, the first aspect of the present invention provides one
Kind powdery bio-carrier, uses surface to cover the powdery carrier for connecing long chain fatty acids amides coated film, covers and connect on powdery carrier
Long chain fatty acids amides structure such as formula (I) shown in：
(I)
Wherein R1For C8~C40Long aliphatic hydrocarbon chain, R2, R3Independent is methyl, ethyl, propyl or isopropyl.It will
This long chain fatty acids amides bio-dispersant, which covers, to be connect on porous powdery carrier, molecular coatings film is formed, as activated sludge
Carrier, microorganism forms cenobium with this carrier in sewage, and cenobium is because collision absorption forms activated sludge group, biology point
The long end of the chain of powder is attracted by carrier to be fixed, and amide end is hydrophilic, can prevent bacterium from adsorbing to the carrier surface of solids, is prevented especially
It is the absorption due to sulfate reducing bacteria, the thallus for surrounding to come in water is directed toward in end, and biocompatibility is allowed to penetrate into thallus
The connection status for replacing minerals, is evenly dispersed minerals also.Carrier surface is electrically charged because of amide group, producing strains
Tiny flocculation is reunited between body, so that the activated sludge group of thallus growth gradually long great achievement special construction.When sludge regimental commander arrives greatly centainly
Degree starts aging, and the binding force of inner layer is begun to decline, and sludge is rolled into a ball under current scour, and amide end cuts through senile cell gap
Occur alliance burst apart, fragmentation.Small organic molecule in sludge is not only released by this burst apart, but also minerals also obtain
Biological dispersion creates condition for further digested sludge fragment.
Preferably, the powdery carrier material has various types of active carbons, diatomite, coke blacking, zeolite powder, sulfonation
Coal dust, alumina powder, silica white, molecular screen primary powder, Emathlite, lamellar graphite powder, wollastonite in powder, sepiolite powder, porous pottery
Porcelain powder, diatom bead, porous volcanic ash, vermiculite power, bentonite, attapulgite, rubber grain, Teflon-6 powder, macromolecule are more
One of hole microballoon GDX or and any combination thereof.
Preferably, the particle of the powdery carrier material is in 400 mesh between 5mm.
Preferably, some antibacterial substances such as rosin acid, rosin acid amide, dosage can be added in long chain fatty acids amides
It is the 0.01%~15% of long chain fatty acids amides, preferably 0.5%~5%, addition can prevent dispersing agent itself micro-
Biological consumption falls.It can also carry out carrying the antibacterial processing of silver in the carrier before covering and connecing long chain fatty acids amides coated film,
In a preference of the invention, active carbon loading silver is used, since silver has good antibacterial ability, amide dispersing agent
It will not be fallen by microbial consumption；The active carbon loading silver can directly be bought from the market.
Preferably, the powdery bio-carrier can be mixed when in use for the waste water situation specifically handled to dirt
Biological inoculum and/or nutrients and/or biological potentiating agent of the water process with synergistic effect, reduce production delay, improve conjunction rule
Property, optimize flora, promotes capability of influence of the autochthonous microorganism flora to technique or the degradation capability to certain ingredients, Jin Erda
To the purpose for improving sewage treatment." mixing when in use " refers to can will both put into after powdery bio-carrier and strain premix
It uses, powdery bio-carrier and strain can also be put into cesspool respectively.
Specifically support preparation method is：It, will by long chain fatty acids amides dispersing agent isopropanol and water dissolution or dispersion
Powdery carrier is completely immersed in, and is sufficiently adsorbed, and liquid is separated, and washes just drying, and high-temperature process solidification is allowed under microwave irradiation
It is firmly combined, forms the effective long chain fatty acids amides film layer of about 10~1000nm on carrier surface.
In order to optimize the coated film on carrier, (or can contain) coupling agent, bleeding agent and table can be added in dispersing agent
Face activating agent, such as fast T, JFC-E, AEO-9 etc., the additive amounts of these auxiliary agents is not to influence the filming function of higher fatty acid amide
It is preferred.
The second aspect of the present invention provides a kind of sewage water treatment method of sludge superelevation amount emission reduction, uses above-mentioned
Powdery bio-carrier is as activated sludge carrier.
Preferably, the powdery bio-carrier is added to running biological treatment tank by closing excess sludge outlet
In, as activated sludge carrier, activated sludge enters aerobic tank, secondary settling tank returns again to anaerobic pond, iterative cycles, reaches with institute
The complete circulation for the activated sludge that powdery bio-carrier is carrier is stated, it can be achieved that sludge is very thorough in biological wastewater treatment process
The emission reduction at bottom.
Effective strain is combined using powdery bio-carrier of the invention, carries out sewage treatment, sludge circulation can be substantially
Emission reduction sludge, sludge emission reduction amount > 95% are spent, or even does not discharge sludge.Carrier material of the invention is porous mass, adsorptivity
Very strong, bacterial species that can in advance in increase system, concentration and metabolic activity inhibit a small amount of funginert generation and make micro-
Biology is strengthened, and when forcing sludge circulation, may make can become molten by dead microbial (sludge) by hydrolysis
The small molecule of solution property, sludge yield will be reduced.The effect of carrier is that aging sludge meeting cell is made to burst apart, and on the one hand may be used
Dissolubility COD is released, and is absorbed and is decomposed by direct bacterium, and on the other hand, the reduction for producing mud also extends the sludge service life, improves
The concentration of active microorganism promotes predation biological growth, is conducive to increase energy loss, and reduce the number of synthesising biological body
Amount.Common predation biology is protist and metazoa, and the growth cycle of this kind of biology is far longer than the growth of microorganism
In the period, in traditional activated Sludge System, since the sludge service life is too short, their quantity will be very rare, does not have most
Big predation, and extend the sludge service life, the predation of protozoan and metazoa is just greatly strengthened, difficult drop is made
Solution substance is consumed, to reach mud decrement.It is crucial a bit, in addition to the redox of biology increases solubility of minerals
Outside, undissolved minerals are dispersed into superfine particle in advance, in multiple disintegration and part CO2Dissolution is converted under atmosphere
Property substance, such as Ca (HCO3)2, inorganic mineral is redissolved.Sewage treatment is carried out in conjunction with the collaboration strain for strengthening emission reduction, is used
After the method for adding bio-carrier of the invention, partial sludge can be digested during biochemical treatment, and excess sludge can only
Enough meet biochemical system reflux requirement, make it possible to realize Biochemical method sewage and without mud discharging.
Powdery bio-carrier of the invention can be used as biochemical sewage processing and go into operation and creates activated sludge use, can also be with
The sludge drainage system of normal biochemical sewage treatment is added, and is realized without mud discharging.Specifically with A-O sewage treatment work
Skill is object, in the system of a normal spoil disposal, closes mud discharging mouth, the sludge circulation in secondary settling tank will be fitted into anaerobic pond
Should system collaboration strain and bio-carrier be added in processing pond, constantly recycle, form the activated sludge system of carrier model,
Sludge, which grows to certain time, to be disintegrated, and COD, dissolved mineral, digested sludge are discharged.It is back to biological treatment section simultaneously
Carbon source needed for biological treatment process is supplemented in anaerobism section, to also achieve the effect that strengthening biological carbon and phosphorous removal.With former work
Skill is compared, not spoil disposal, and water outlet makes moderate progress.
The dosage of powdery bio-carrier of the present invention is day output 0.5~5% (depending on waste water quality through a large number of experiments
Depending on carrier format), the loss amount of every three months supplement about 0.005%, validity period 5 years or more.
Detailed description of the invention：
Fig. 1 is the flow chart of A/O sewage-treatment plant provided by the invention
The present invention will now be described in detail with reference to examples, which is given premised on inventive technique scheme
Gone out detailed embodiment and specific operational process of craft, but protection scope of the present invention be not limited solely to it is following
Embodiment.
Specific embodiment
Embodiment 1
Long chain fatty acids amides bio-dispersant selects Beckmann company BulabTM 8007 is 85% tall oil
Sour amide dispersion resin.Powdery bio-carrier preparation method is：8007 resin 150g are added into 500ml isopropanol, are added
KH570 silane coupling agent 1g, rosin acid 5g, rosin acid amide 8g add the stirring warm dissolution of 500ml water, 5000ml water are added simultaneously
High speed dispersion is at homogeneous latex emulsion.Silver-carrying bacteriostatic activated carbon (100 mesh) 1000g is added, stirs 12 hours, filtering, with 50 DEG C of temperature
Water washs repeatedly.Filter cake is dried at 100 DEG C or less, then is irradiated 20 minutes under dividing to microwave, is heated to 300 DEG C, is cooled to room
Temperature obtains powder slightly with adhesive, i.e. powdered activated carbon bio-carrier, is such as mixed into solid spawn, then cryo-conservation.
Embodiment 2
Active carbon is changed to powdery (100 mesh) sulfonation coal dust in embodiment 1, obtains powdery sulfonated coal bio-carrier.
Embodiment 3
Active carbon is changed to diatomite in embodiment 1, obtains diatomite bio-carrier.
Embodiment 4
Active carbon is changed to molecular sieve powder in embodiment 1, obtains molecular sieve powder bio-carrier.
Embodiment 5
By the carrier of embodiment 1,2,3,4 by 1: 1: 0.5: 0.2 mixing, mixed biologic carrier is obtained.
Embodiment 6
A set of A/O sewage-treatment plant, process are as shown in Fig. 1：
Raw water is water after Shanghai sewage treatment plant grid, constitutional chemistry oxygen demand CODCr350mg/L, ss suspended solid
70mg/L, NH3- N 25mg/L covers LLMO complex microorganism bacterial classification using the benefit of the general Environmental Protection Technology Co., Ltd of U.S. GES,
It contains 7 kinds of bacteriums, has preferable synergy to the organic matter of digested sludge.
The active carbon bio-carrier 75kg of Example 1 covers LLMO complex microorganism bacterial classification with 100kg liquid benefit and mixes
It stirs evenly, is put into biological treatment tank after room temperature fermentation 24-36h, sediment circulation does not discharge sludge, molten after system is stablized
2~7mg/L of oxygen DO is solved, unit volume mixed liquor includes 3.2~5.4g/L of total amount MLSS of activated sludge solids substance.Even
Continue 1 year not blowdown mud, water flow~100L/h, effluent quality：COD CODCr50~60mg/L, ss suspended solid
8~9mg/L, NH32~3mg/L of-N.
Embodiment 7
Certain municipal sewage plant A/O, 1.2 ten thousand m of processing capacity3/ D, daily spoil disposal 10t, flooded condition：Chemical oxygen demand
Measure CODCr160~180mg/L, ss suspended solid 70~80mg/L, NH34~9mg/L of 20~25mg/L of-N, total phosphorus TP.With
The mixed biologic carrier 60t (aqueous to be supervised less than 2%, Ou Yi organic optoelectronic Science and Technology Ltd.) of embodiment 5, it is another to supplement
Novozymes Company's strain：Toler-X5100 200kg, 5100 BioKemov 50kg, 4000 50kg of BisPikes,
BioQuick 5130 50kg.Experiment is responsible for debugging operations by Ou Yi organic environmental-protection Science and Technology Ltd., first closes sewage draining exit,
It is put into after material plus water are slurried again from sludge reflux mouth, daily 5t is finished, squeezed into anaerobic pond for 12 days, is recycled.Pass in and out water
Constant, system begins to not spoil disposal since feeding intake within first day, does not add flocculant, more than continuous a year and a half not spoil disposal.
Effluent quality：COD CODCr40~50mg/L, ss suspended solid 8~9mg/L, NH32~4mg/L of-N, total phosphorus TP 2
~3mg/L makes moderate progress than original water outlet and pool side smell significantly reduces.Comprehensive assessment sludge emission reduction amount is greater than 95%, comparison
This bio-carrier is not added and it is daily continuously add strain pure reinforcing biochemical method mud decrement 50~60%, raising subtracts
Discharge capacity about 40%, and daily do not increase operating cost.
Claims (9)
1. a kind of powdery bio-carrier, it is characterised in that cover the powdery carrier for connecing long chain fatty acids amides coated film using surface；
Shown in the long chain fatty acids amides structure such as formula (I)：
Wherein R1For C8~C40Long aliphatic hydrocarbon chain, R2, R3Independent is methyl, ethyl, propyl or isopropyl.
2. powdery bio-carrier according to claim 1, it is characterised in that the partial size of the powdery carrier be 400 mesh~
5mm。
3. powdery bio-carrier according to claim 1, it is characterised in that cover the long-chain rouge connect on powdery carrier surface
It also added rosin acid or/and rosin acid amide in fat acid amide formula.
4. powdery bio-carrier according to claim 3, it is characterised in that the addition matter of the rosin acid and rosin acid amide
Amount is the 0.01~5% of long chain fatty acids amides quality.
5. powdery bio-carrier according to any one of claims 1 to 4, it is characterised in that the carrier of powdery be active carbon,
Diatomite, coke blacking, zeolite powder, sulfonation coal dust, alumina powder, silica white, molecular screen primary powder, Emathlite, lamellar graphite powder,
Wollastonite in powder, sepiolite powder, porous ceramics powder, diatom bead, porous volcanic ash, vermiculite power, bentonite, attapulgite, rubber
One of particle, Teflon-6 powder, porous polymer bead GDX or and any combination thereof.
6. powdery bio-carrier according to claim 5, it is characterised in that the carrier of powdery cover connect long chain fatty acids amides apply
Ag-carried antibacterial processing is carried out before tunic.
7. according to claim 1,2,3,4,6 described in any item powdery bio-carriers, it is characterised in that mixed when carrier use
There is the biological inoculum and/or nutriment and/or biological potentiating agent of synergistic effects to sewage treatment.
8. a kind of sewage water treatment method of sludge superelevation amount emission reduction, it is characterised in that described in any item using claim 1~7
Powdery bio-carrier is as activated sludge carrier.
9. the sewage water treatment method of sludge superelevation amount emission reduction according to claim 8, it is characterised in that claim 1~7 is any
Bio-carrier described in is added in running biological treatment tank, by closing excess sludge outlet as activated sludge
Carrier, activated sludge enters aerobic tank, secondary settling tank returns again to anaerobic pond, iterative cycles, reaches using the bio-carrier as carrier
Activated sludge complete circulation.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107311297A (en) * | 2017-05-26 | 2017-11-03 | 张家港市爱上旅途网络科技有限公司 | It is a kind of for modified powdery bio-carrier of Treatment of Sludge and preparation method thereof |
| CN107344750A (en) * | 2017-05-26 | 2017-11-14 | 张家港市爱上旅途网络科技有限公司 | A kind of sewage water treatment method of powdery bio-carrier and sludge emission reduction |
| CN107129106A (en) * | 2017-05-26 | 2017-09-05 | 张家港市爱上旅途网络科技有限公司 | The sewage disposal system and sewage water treatment method of a kind of sludge emission reduction |
| CN107555678B (en) * | 2017-10-27 | 2020-05-19 | 湖南绿网环保科技有限责任公司 | Method for treating waste liquid of silicon-aluminum molecular sieve |
| CN109467145A (en) * | 2018-12-04 | 2019-03-15 | 湖南工程学院 | A kind of organic waste water treatment agent containing porous sepiolite |
| CN112225415A (en) * | 2020-10-26 | 2021-01-15 | 天津大学 | Method for removing heavy metals by modified activated carbon mediated sludge bioleaching |
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