CN107365012A - Method based on multidimensional Strong oxdiative and circulation biochemical treatment refuse leachate - Google Patents
Method based on multidimensional Strong oxdiative and circulation biochemical treatment refuse leachate Download PDFInfo
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- CN107365012A CN107365012A CN201710439639.3A CN201710439639A CN107365012A CN 107365012 A CN107365012 A CN 107365012A CN 201710439639 A CN201710439639 A CN 201710439639A CN 107365012 A CN107365012 A CN 107365012A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/121—Multistep treatment
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to the method based on multidimensional Strong oxdiative and circulation biochemical treatment refuse leachate,Belong to technical field of sewage,This method is squeezed into regulating reservoir after refuse leachate is collected,Carry out runoff investigation and water quality adjustment,Squeezed into after regulation in multidimensional Strong oxdiative equipment,Pass through the direct degradation of organic substances of electrode,Absorptive collection heavy metal ion simultaneously,Destroy the growing environment of corrupt flora,Eliminate spoilage organisms and active other poor floras,Stable aquatic environment is provided for subsequent treatment,Avoid the uncertainty of result,After flocculation sediment,Heavy metal ion,The flora being killed separates with flocculate precipitate to be removed,Then pass through the organic matter remained in the metabolic consumption water of anaerobic bacteria in anaerobic pond,And improve environment for follow-up circulation is biochemical,Then,Level Four circulation biochemistry eliminates the organic pollution in water using aerobic bacteria under aeration condition,Waste water dosing after biochemical treatment carries out flocculation sediment,Last filtered formation harmless treatment water.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to be oozed based on multidimensional Strong oxdiative and circulation biochemical treatment rubbish
The method of transparent liquid.
Background technology
Refuse leachate refers to derive from moisture, the sleet water into landfill yard that rubbish contains in itself in refuse landfill
And other moisture, deduct rubbish, the saturation moisture capacity of overburden layer, and a kind of high concentration for undergoing waste layer and overburden layer and being formed
Organic wastewater, in addition, also having the preparation of accumulation for the moisture that leaks out of rubbish burned, the water-quality constituents of refuse leachate
Complexity, constituent mainly include three aspects：1) rubbish contains in itself moisture and lysed big by the rainwater of rubbish
Measure dissolved organic matter and inorganic matter；2) rubbish is due to soluble product caused by biology, chemistry and physical action；3) from covering
Soil and surrounding soil enter the solable matter of percolate.
The composition of rubbish is different, and the age that refuse landfill uses is different, and the water quality situation of its percolate is also different,
The characteristics of its is total is that pollutant concentration is high, change is big.Existing handling process mainly adds biochemical process to add RO films using flocculation sediment
Partition method, due to the complexity of composition in refuse leachate, the treatment effect of existing process is undesirable, in final processing water
Some pollutants for handling and not falling can be contained, so as to cause to influence accordingly on environment, RO membrane separation process costs are very high, do not apply to
In the processing of continuous a large amount of refuse leachates, therefore, it is necessary to refuse leachate processing method is improved.
The content of the invention
Instant invention overcomes the shortcomings that prior art, there is provided based on multidimensional Strong oxdiative and circulation biochemical treatment rubbish infiltration
The method of liquid, this method can not only efficiently remove the dissolved organic matter in refuse leachate and inorganic matter, and can also
Enough floras that activity in waste water is poor are eliminated and it is removed in the lump with flocculate precipitate, avoid the poor flora of activity
Influence of the metabolism to water quality, ensure sewage disposal effect stability is reliable and high quality.
The present invention concrete technical scheme be：
Method based on multidimensional Strong oxdiative and circulation biochemical treatment refuse leachate, key point is, methods described include with
Lower step：
A, refuse leachate is collected and is delivered to regulating reservoir, carry out runoff investigation and water quality adjustment；
B, the waste water after regulation is squeezed into progress one-level multidimensional Strong oxdiative, multidimensional Strong oxdiative equipment in multidimensional Strong oxdiative equipment
The two-dimentional electrolytic cell of granular electrode material is filled between electrode, power frequency is 10-20KHz, and the Strong oxdiative duration is 25-
35min, obtain intermediate treatment water；Add flocculation aid, addition for intermediate treatment water weight a ten thousandth to 3/10000ths, wadding
Retrogradation, which is formed sediment, continues 2.5-3.5H, then separates lower sediment, forms oxidation processes water；
C, oxidation processes water is squeezed into and anaerobic reaction is carried out in anaerobic pond, temperature is 30-33 degrees Celsius, and the duration is
12-16H, form Anaerobic Treatment water；
D, Anaerobic Treatment water is squeezed into four biochemical systems being sequentially connected and carries out level Four circulation biochemical treatment, at biochemistry
Reason is carried out using sludge activation method, and biochemical system includes aeration tank, sedimentation basin and activating tank, and waste water produces after squeezing into aeration tank
Sludge squeeze into activating tank and activated, the sludge after activation is returned in aeration tank, aeration tank mesophytization 7H, sludge reflux amount
70-80%, sludge concentration 7000mg/L, the waste water that sludge is removed in aeration tank is squeezed into sedimentation basin, the precipitation duration is
3.5-4H, the sludge of precipitation, which is first squeezed into activating tank, to be activated, and is then return in aeration tank and is participated in biochemical reaction, and sludge returns
Flow 70-80%, sludge concentration 7000mg/L；
E, advanced treating is carried out to waste water of the circulation after biochemical, adds coagulant and flocculation aid, addition is respectively the step
Middle wastewater flow rate 5/3000ths to thousand/1000ths, a ten thousandth to 3/10000ths, after coagulation dosing 2.5-3.5H, synthesis was adsorbed
10-20min is filtered, finally gives qualified processing water.
In described step A, water quality adjustment includes the regulation of pH value, SS and COD value, adjust to SS values, pH value and
COD value is stable.
In described step B, the flocculation aid added is PAM, and addition is 2/10000ths of intermediate treatment water weight, is wadded a quilt with cotton
Retrogradation, which is formed sediment, continues 3H.
In described step E, the coagulant added is PAC, and addition is 4/1000ths of wastewater flow rate in the step, institute
The flocculation aid of addition is PAM, and addition is 2/10000ths of wastewater flow rate in the step, and synthetic filter adsorbs after coagulation dosing 3H
15min。
The beneficial effects of the invention are as follows：The complicated refuse leachate of component content is carried out multidimensional Strong oxdiative, detested by the present invention
Oxygen reacts and level Four circulation biochemical treatment, and the various existing compositions in refuse leachate are eliminated, wrapped by multidimensional Strong oxdiative
The absorption of heavy metal ion, the degraded of organic matter and the killing of corrupt flora are included, the killing of corrupt flora can avoid its new
The old long lasting effect being metabolized to refuse leachate water quality, is the very metastable aquatic environment of follow-up sewage disposal process, and
The killing of corrupt flora can also avoid influenceing growth and the activity of later stage anaerobic bacteria and aerobic bacteria, the degradation process of organic matter
It is the process that oxygen in water gradually decreases, provides suitable environment for the existence of follow-up anaerobic bacteria, flocculation sediment process will weight
Metal ion, the organic matter simple compound being decomposed to form and the corrupt flora being killed carry out precipitation separation of reuniting, with
The anaerobic reaction carried out afterwards is consumed remaining organic matter, and the biochemical aerobic bacteria by under aeration condition of level Four circulation is carried out
The consumption of remaining organic pollution, the waste water after precipitation separation passes through dosing flocculation sediment again, by remaining organic matter in sewage
Flocculation sediment is carried out with inorganic matter, most obtains qualified processing water after adsorption filtration afterwards.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of method in the present invention.
Embodiment
The present invention relates to a kind of method based on multidimensional Strong oxdiative and circulation biochemical treatment refuse leachate, in this method
Multidimensional Strong oxdiative process includes at least one of electro-catalysis, electric flocculation and electric Fenton, and circulation biochemistry is by the new of microorganism
Old metabolism handles the polluter in waste water, and based on above-mentioned 2 points, pond is adjusted successively when handling refuse leachate
Processing, Strong oxdiative processing, Anaerobic Treatment, circulation biochemical treatment and advanced treating, finally realize the innoxious of refuse leachate
Processing, specific operating process are illustrated by specific embodiment.
Specific embodiment, as shown in figure 1, when being handled using the method progress refuse leachate in the present invention, specifically
Comprise the following steps：
A, refuse leachate is collected and is delivered to regulating reservoir, runoff investigation duration 100H, the volume root of regulating reservoir
It is designed according to the treating capacity of the residence time, the yield of waste water and waste water, the treating capacity of refuse leachate waste water is
150-300m3/ d, water quality adjustment include the regulation of pH value, SS and COD value, after regulation cause waste water in SS values, pH value with
And COD value keeps stable；
B, one-level multidimensional Strong oxdiative is carried out to refuse leachate, equipment used in multidimensional Strong oxdiative is in conventional two-dimensional electricity
Granular working electrode is loaded between the electrode of solution groove, granular working electrode selects a diameter of 5mm-10mm graphite particle, after filling
Multidimension electrode structure is formed, Strong oxdiative particle is produced by the direct degradation of organic substances of anode reaction, or by anode reaction, such as
A kind of strong oxidizer of hydroxyl, oxygen, hydrogen peroxide, hydroxyl radical free radical, ozone, these strong oxidizers selectively with waste water
Organic pollution quickly occur chain reaction carry out oxidative degradation, be degraded to carbon dioxide and water, this biodegrading process makes to have
The decomposition of machine thing is more thorough, and the advantage that multidimensional Strong oxdiative is carried out to refuse leachate is：
1st, these granular working electrodes being filled between both positive and negative polarity improve mass transfer in liquid phase efficiency and current efficiency；
2nd, electronics transfer is only carried out between electrode and waste water component, and oxidation reaction relies on hydroxyl caused by system oneself certainly
Carried out by base, it is not necessary to add decoction, non-secondary pollution；
3rd, pollutant concentration of intaking is unrestricted, and COD concentration may be up to tens thousand of mg/L, decolourizes, detoxification significant effect, percent of decolourization
Up to more than 50-80%, the course of reaction of organic pollutant degradation processing is rapid, and retention time of sewage is short, it is only necessary to 30-60min,
Required equipment volume is small；
4th, ammonia nitrogen, total phosphorus and the colourity in waste water can be efficiently removed simultaneously；
5th, reaction condition is gentle, is carried out under normal temperature and pressure, and operation is flexible, can be adjusted at any time instead by changing voltage, electric current
Answer condition, controllability is good；
6th, floor space is small, and the completion time of project is short, and operating cost is low；
7th, non-stripping property DSA anodes, electrodeless burn into problem of passivation, there is the characteristics of efficient, the long-life；
Power frequency is 10-20KHz, and duration 30min, multidimensional Strong oxdiative process can not only directly degrade organic
Thing, additionally it is possible to absorptive collection heavy metal ion, kill the spoilage organisms in refuse leachate and active poor microorganism species, keep away
Exempt from long lasting effect of the spoilage organisms to water quality, the stink source of sewage is cut off therewith, it is most important that, for the sewage subsequently carried out
Processing provides stable aquatic environment, and then to flocculation aid is added in sewage, the flocculation aid added is PAM, and addition is sewage
Amount 2/10000ths, flocculation sediment continue 3H, by flocculation sediment process by the heavy metal ion of absorptive collection, kill corruption
Lose bacterium and deactivated microorganism species separate removing；
C, the processing water after multidimensional Strong oxdiative is squeezed into anaerobic pond, anaerobic bacteria carries out metabolism in the absence of oxygen
And the organic pollution in sewage is consumed, the anaerobic reaction duration is 14H, 32 degrees Celsius；Using the effect of anaerobic bacteria, make to have
Hydrolysis, acidifying and methanation occur for machine thing, remove the organic matter remained in sewage, while improve the biodegradability of sewage, favorably
In follow-up biochemical treatment, wherein, the anaerobic degradation process of macromolecule organic is divided into four-stage：Hydrolysis stage
(complicated non-solubility polymer is converted into the process of simple dissolubility monomer or dimer), fermentation stage (organic matter
Compound had both been also the biodegradation process of electron donor as electron acceptor, and dissolved organic matter is converted into the process
End productses based on volatile fatty acid, zymophyte also synthesize new cellular material using moieties, compared to without hair
The sewage disposal process of ferment processing, reduces sludge quantity to greatest extent), (hydrogen-producing acetogens will on last stage the acetic acid stage for production
Product be further converted to acetic acid, hydrogen, carbonic acid and new cellular material) and methane phase stage (acetic acid, hydrogen, carbonic acid, first
Alkane and methanol are converted into methane, carbon dioxide and new cellular material), by the aforementioned four stage, by high score in waste water
Sub- organic matter is decomposed into small molecule, removes the organic matter in waste water, reduces the biological load of subsequent biological treatment and improve its life
The property changed, promotes the raising of biochemical effects；
D, Anaerobic Treatment water is squeezed into four biochemical systems being sequentially connected and carries out level Four circulation biochemical treatment, at biochemistry
Reason is carried out using sludge activation method, and biochemical system includes aeration tank, sedimentation basin and activating tank, and the waste water after anaerobic reaction is squeezed into
In aeration tank, biochemical reaction is using organic in the metabolic activity consumption waste water of aerobic microbiological in the presence of aeration
Pollutant, caused sludge, which is squeezed into, carries out activation process in activating tank, then return to and biochemical reaction is participated in aeration tank, exposes
Gas pond mesophytization duration of the reaction is 7H, sludge reflux amount 70-80%, sludge concentration 7000mg/L, is entered after biochemical
Precipitation separation is carried out in sedimentation basin, duration 3.5-4H, the sludge of precipitation, which is also squeezed into, carries out activation process in activating tank, with
Return afterwards in aeration tank and participate in biochemical reaction, sludge reflux amount 70-80%, sludge concentration 7000mg/L；
E, advanced treating finally is carried out to the processing water after biochemistry, adds coagulant and flocculation aid to carry out coagulating sedimentation first,
The coagulant added is PAC, and addition is 4/1000ths of waste water weight in the step, and the flocculation aid added is PAM, is added
Dosage is 2/10000ths of waste water weight in the step, and the coagulating sedimentation duration is 3H, then carries out integrating adsorption filtration, holds
The continuous time is 15min, obtains qualified processing water.
Heavy metal ion, organic pollution, inorganic pollution and various corrupt floras in the processing water that the present invention obtains
It is eliminated, and multidimensional Strong oxdiative also has certain decolorizing effect, is formed with reference to agglomerated particle during flocculation sediment
The suction-operated of pigment, the colourity of final process water will be substantially reduced in journey, it is each in water due to the addition without extraneous contamination source
The corrupt flora of kind is killed substantially, and significant change no longer occurs for water quality, and for processing water without obvious colourity and stink, the processing water can
Planted applied to green in irrigation and urban road watering operation.
Claims (4)
1. based on multidimensional Strong oxdiative and circulation biochemical treatment refuse leachate method, it is characterised in that methods described include with
Lower step：
A, refuse leachate is collected and is delivered to regulating reservoir, carry out runoff investigation and water quality adjustment；
B, the waste water after regulation is squeezed into progress one-level multidimensional Strong oxdiative in multidimensional Strong oxdiative equipment, multidimensional Strong oxdiative equipment is electricity
Interpolar is filled with the two-dimentional electrolytic cell of granular electrode material, and power frequency is 10-20KHz, and the Strong oxdiative duration is 25-
35min, obtain intermediate treatment water；Add flocculation aid, addition for intermediate treatment water weight a ten thousandth to 3/10000ths, wadding
Retrogradation, which is formed sediment, continues 2.5-3.5H, then separates lower sediment, forms oxidation processes water；
C, oxidation processes water is squeezed into and anaerobic reaction is carried out in anaerobic pond, temperature is 30-33 degrees Celsius, duration 12-
16H, form Anaerobic Treatment water；
D, Anaerobic Treatment water is squeezed into four biochemical systems being sequentially connected and carries out level Four circulation biochemical treatment, biochemical treatment is adopted
Carried out with sludge activation method, biochemical system includes aeration tank, sedimentation basin and activating tank, and waste water squeezes into caused dirt behind aeration tank
Mud is squeezed into activating tank and activated, and the sludge after activation is returned in aeration tank, aeration tank mesophytization 7H, sludge reflux amount 70-
80%, sludge concentration 7000mg/L, the waste water that sludge is removed in aeration tank is squeezed into sedimentation basin, the precipitation duration is 3.5-
4H, the sludge of precipitation, which is first squeezed into activating tank, to be activated, and is then return in aeration tank and is participated in biochemical reaction, sludge reflux amount
70-80%, sludge concentration 7000mg/L；
E, advanced treating is carried out to waste water of the circulation after biochemical, adds coagulant and flocculation aid, addition is respectively to be given up in the step
Water 5/3000ths to thousand/1000ths, a ten thousandth to 3/10000ths, after coagulation dosing 2.5-3.5H, comprehensive adsorption filtration
10-20min, finally give qualified processing water.
2. the method according to claim 1 based on multidimensional Strong oxdiative and circulation biochemical treatment refuse leachate, its feature
It is, in described step A, water quality adjustment includes the regulation of pH value, SS and COD value, adjusts to SS values, pH value and COD
Value stabilization.
3. the method according to claim 1 based on multidimensional Strong oxdiative and circulation biochemical treatment refuse leachate, its feature
It is, in described step B, the flocculation aid added is PAM, and addition is 2/10000ths of intermediate treatment water weight, is flocculated
Precipitation continues 3H.
4. the method according to claim 1 based on multidimensional Strong oxdiative and circulation biochemical treatment refuse leachate, its feature
It is, in described step E, the coagulant added is PAC, and addition is 4/1000ths of wastewater flow rate in the step, is added
The flocculation aid added is PAM, and addition is 2/10000ths of wastewater flow rate in the step, and synthetic filter adsorbs after coagulation dosing 3H
15min。
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| CN201710439639.3A CN107365012A (en) | 2017-06-12 | 2017-06-12 | Method based on multidimensional Strong oxdiative and circulation biochemical treatment refuse leachate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109775937A (en) * | 2019-03-13 | 2019-05-21 | 苏州旭达环保科技有限公司 | The system purification processing method of terminal refuse pressing filtering liquid |
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