CN108793588A - A kind of percolate treatment processing method based on advanced oxidation group technology - Google Patents

A kind of percolate treatment processing method based on advanced oxidation group technology Download PDF

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CN108793588A
CN108793588A CN201810545770.2A CN201810545770A CN108793588A CN 108793588 A CN108793588 A CN 108793588A CN 201810545770 A CN201810545770 A CN 201810545770A CN 108793588 A CN108793588 A CN 108793588A
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microalgae
water
technology
advanced oxidation
fenton
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郭智
邱明建
徐伟
王元月
史振宇
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China Energy Saving Engineering Technology Research Institute Co Ltd
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China Energy Saving Engineering Technology Research Institute Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5263Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56Macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/722Oxidation by peroxides
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/105Phosphorus compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/06Contaminated groundwater or leachate
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00Use of specific compounds during water treatment
    • C02F2305/02Specific form of oxidant
    • C02F2305/026Fenton's reagent
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • C02F3/322Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae

Abstract

The present invention provides a kind of processing method of the landfill leachate tail water based on advanced oxidation group technology, including step:(1) a certain amount of coagulant is added into landfill leachate tail water, and separation is realized in coagulation unit after standing;(2) supernatant of coagulation unit enters Fenton units, adds FeSO4And hydrogen peroxide, and be sufficiently mixed and reacted with supernatant;(3) water outlet of Fenton units enters microalgae photobiological reactor progress advanced treating.The deep treatment method of landfill leachate tail water provided by the invention, alternative traditional nitrification/denitrification biological aerated filter unit, advanced treating is carried out to the water outlet after Fenton cell processings using microalgae photobiological reactor, the pollutants such as remaining COD, organic matter, ammonia nitrogen, nitrate nitrogen, phosphorus in water removal are removed, it is comprehensive to promote water outlet indices.Meanwhile the microalgae biomass of generation can be used as animal feed or biodiesel raw material, reduce percolate processing cost.

Description

A kind of percolate treatment processing method based on advanced oxidation group technology
Technical field
The invention belongs to field of waste water treatment, and in particular to a kind of processing method of garbage filter waste water.
Background technology
With the quickening of Development of China's Urbanization, the quick increase of domestic waste has become the protrusion environment that China faces and asks One of topic.The municipal refuse of excessive excessively rapid growth will large area occupy city public domain, if in dumping surrounding area Disposal Measures are improper to cause mosquitos and flies germ to grow, and influence city dweller's health, and may to local underground water, air and Soil etc. causes seriously to pollute.Waste incineration and generating electricity has treatment effeciency height as a kind of harmless life refuse treatment technology, Pathogen can be killed completely and realizes that garbage as resource such as utilizes at the advantages, caused the great attention and concern of country.Rubbish The mainstream treatment measures of house refuse will gradually be become by burning, and possess huge market development space and potentiality.
China's garbage collection at this stage is essentially mixed collection, and moisture content is high.To improve waste incineration calorific value, burning Before, it needs, by the rubbish heap ferment a few days, to make rubbish cure and drip moisture removal, a large amount of landfill leachates will be generated in the process.Rubbish Rubbish leachate quality complicated component, pollutant concentration height (being mainly shown as high concentration COD and ammonia nitrogen in high density), with seasonal variations The fluctuation of its yield is larger, it is difficult to handle.The garbage leachate treatment process of current main-stream is " at pretreatment+biochemical treatment+film Manage group technology ".The technique can be by landfill leachate original sub-block to receiving pipe standards, but it is longer to face processing time simultaneously, The problems such as concentrated phase liquid is difficult to handle after film.Non- membrane process craft (including Fenton, ozone catalytic oxygen based on high-level oxidation technology Change, photocatalysis etc.) using the hardly degraded organic substance in the strong oxidizer destruction percolate of reaction generation, it can significantly improve in water B/C ratios, reduce subsequent biochemical technical load, promote the water quality that is discharged after processing of percolate, and solve after film at concentrated phase liquid The problem of reason.
Chinese patent CN101698550A provides a kind of landfill leachate advanced treatment process.The technique is by Polyferric Sulfate coagulation + Fenton+ biological aerated filter units are constituted, and have processing technological flow compact, floor space is small, equipment investment and running cost With it is relatively low the features such as.But the nitrite anions in water removal and nitrate ion energy are not removed comprising denitrification unit in the technique Power is weaker, and total nitrogen concentration control needs to rely on front-end process.
Chinese patent CN204981478U is related to a kind of garbage percolation liquid treating system, and core process unit is Fenton oxygen Change processing unit and denitrification/nitrification two-stage biofilter.Fenton units can decompose toxic organic matter difficult to degrade, generate Carbon dioxide and water improve the biodegradability of waste water.Two-stage biofilter can realize denitrification denitrogenation function, reduce in water outlet Total nitrogen concentration.But the technique can be such that process system complicates since two-stage biofilter is added, thereby increases and it is possible to since C/N is than inclined It is low so that biochemical unit processing time is partially long.
Chinese patent 103880253A discloses a kind of deep treatment method of landfill leachate, contains membrane biological reaction Device unit, Fenton processing units and aerobic/anaerobic biological aerated filter.The technique is added in anaerobism biological aerated filter unit Methanol adjusts the C/N ratios in water, can improve total nitrogen removal effect, but may increase overall operation cost.
Invention content
In view of the deficiencies of the prior art, the present invention proposes a kind of landfill leachate based on advanced oxidation group technology Tailwater Depth processing method, it is therefore an objective to seek to solve current landfill leachate " pretreatment+biochemical treatment+film process " technique to face Film after concentrated phase liquid intractable problem new way.Another object of the present invention is to substitute traditional nitrification/denitrification aeration Biological filter unit carries out advanced treating using microalgae photobiological reactor to the water outlet after Fenton cell processings.
The present invention removes metal ions and the part COD such as suspended matter, calcium and magnesium remaining in tail water by coagulation first.Later Based on Fenton oxidation unit, hydroxyl radical free radical is generated, destroys the larger molecular organics difficult to degrade in water, improves the B/C in water Than carrying out depth removal to part COD and organic matter.After precipitation, supernatant enters microalgae light for the water outlet of Fenton units Bioreactor unit.Microalgae can be issued in illumination condition is born from foster photosynthesis, at the same when in water there are when organic matter, microalgae Organic matter can be absorbed again, heterotrophism biochemical reaction occurs, and during being proliferated to itself, remove organic matter, the ammonia in water removal The pollutants such as nitrogen, nitrate nitrogen, phosphorus, promote effluent quality in all directions.In addition, while handling waste water, the microalgae biology of generation Matter can be used as animal feed or produce the raw material of biodiesel, has certain economic benefit, can reduce percolate processing cost.
Realize that the technical solution of the object of the invention is:
A kind of percolate treatment processing method based on advanced oxidation group technology, includes the following steps:
(1) a certain amount of coagulant is added into landfill leachate tail water, and separation is realized in coagulation unit after standing.Institute It is bodied ferric sulfate, polyacrylamide, polyaluminum ferric chloride, aluminium polychloride, poly-ferric chloride, polysilicon acid flocculation to state coagulant Agent, chitosan flocculant, in it is one or more;
(2) supernatant of coagulation unit enters Fenton units, adjusts supernatant pH to 3.5~4.5, adds FeSO4With Hydrogen peroxide, and be sufficiently mixed and reacted with supernatant;
(3) water outlet of Fenton units enters microalgae photobiological reactor unit progress advanced treating.
It is the preferred technical solution of the present invention below.
Wherein, the coagulant is bodied ferric sulfate and polyacrylamide, and dosage is 0.1~2 g/L.
Wherein, in step (2), by FeSO4·7H2O and 30% (mass fraction) hydrogen peroxide meter, FeSO4With hydrogen peroxide Dosage is respectively 0.08~0.8% and 0.2~1%, and reaction time of the water in Fenton units is 1~5h.
In Fenton units, pH, FeSO of water inlet4The side of adding of the dosage and ratio and hydrogen peroxide of/hydrogen peroxide Formula is crucial, it will the removal effect of extreme influence COD;In addition, needing to carry out water and medicament in reaction process abundant Mixing, and ensure that the reaction time is abundant.Common hydrochloric acid, sodium hydroxide, sodium carbonate etc. can be used in the supernatant pH of coagulation unit Medicament is adjusted.
It is further preferred that in step (2), the FeSO4Addition with hydrogen peroxide is with the landfill leachate tail The pollutant load of water increases and increases.By FeSO4·7H2O and 30% (mass fraction) hydrogen peroxide meter, when the garbage filter COD is 400~600mg/L in liquid tail water, then FeSO4Dosage with hydrogen peroxide is 0.08~0.2% and 0.2~0.6%, When COD is 1000~1400mg/L, then FeSO in the landfill leachate tail water4Dosage with hydrogen peroxide is 0.2~0.8% With 2~3%.
Wherein, step (2) after reaction, staticly settles 1h, precipitation and separation and supernatant liquor, supernatant liquor adjust pH to Enter the microalgae photobiological reactor after 6~7.Common hydrochloric acid, sodium hydroxide, sodium carbonate can be used in supernatant liquor pH values Equal medicaments are adjusted.
Wherein, the sludge (precipitation) that coagulation unit and Fenton unit bottoms generate, is concentrated after collecting and being dehydrated Processing.
Wherein, the microalgae photobiological reactor is made using transparent material, and plate membrane or hollow is provided in reactor Fiber film component, plate membrane or hollow fiber film assembly are submerged into microalgae solution.Microalgae cell can not by the micropore of film, by every From in the outside of film.Each pollutant in water is gone by the fast breeding (being converted into microalgae cell biomass) of microalgae itself After removing, effluent quality is promoted, water outlet, which enters through seperation film on the inside of film, to be collected.
Wherein, the microalgae in the microalgae photobiological reactor is salt-enduring strain, selected from Wild Vitis species, Nannochloropsis oculata, bead One kind in algae.
Microalgae photobiological reactor unit needs to provide certain illumination, without providing additional light under conditions of outdoor fine day Source;When outdoor is cloudy day or rainy day, the appropriate supplementary light of artificial light source should be utilized, illumination needed for the growth of microalgae cell is maintained Intensity.The reaction temperature of bioreactor controls between 32~38 DEG C, when outdoor temperature is relatively low, needs to carry out one to it Fixed isothermal holding.It needs to provide certain aeration in microalgae photobiological reactor, on the one hand film surface can be washed away, be prevented Microalgae is adhered to film surface, blocks exhalant canal;On the other hand it allows turbulent water, so that microalgae is not settled in water, energy Pollutant in enough preferably intake water.If it was found that microalgae forms the surface that biomembrane is attached to bioreactor, answer regular Reactor surface is cleared up.
Wherein, the temperature of the microalgae photobiological reactor controls between 32~38 DEG C, intensity control 2000~ Between 3000Lux.
Wherein, when the microalgae density in microalgae photobiological reactor reaches 3g/L or more, microalgae cell liquid is arranged Go out 80~95%, the cell liquid of discharge detaches microalgae cell by gravitational settling;After layering, supernatant liquor returns described micro- In algae optical biological reactor, after lower layer's microalgae cell biomass is collected, centrifugal drying.
The beneficial effects of the present invention are:
(1) can the depth COD difficult to degrade, organic matter, ammonia nitrogen, nitrate nitrogen, pollutants, the General Promotion such as phosphorus that go in water removal go out Water water quality.
(2) it generates, is solved after the film that current landfill leachate embrane method treatment process faces at concentrated phase liquid without concentrated phase liquid after film Manage problem.
(3) microalgae biomass that microalgae photobiological reactor unit generates has certain economic benefit, can reduce garbage filter Liquid processing cost.
Description of the drawings
Fig. 1 is that the present invention is based on the technological processes of the landfill leachate Tailwater Depth processing method of advanced oxidation group technology Figure.
Specific implementation mode
What attached drawing 1 was presented is the technique stream of the landfill leachate Tailwater Depth processing method based on advanced oxidation group technology Cheng Tu.In figure, landfill leachate tail water enters coagulation unit, first by coagulation remove suspended particulate substance remaining in tail water, Calcium ions and magnesium ions and part COD.The water outlet of coagulation unit is after adding ferrous sulfate and hydrogen peroxide, into Fenton oxidation unit. Hydrogen peroxide is in Fe2+Catalytic action under generate hydroxyl radical free radical, react with the hardly degraded organic substance in water, and it is carried out It decomposes and destroys.The sludge that the sludge and coagulation unit that Fenton units generate generate is focused on together.It is heavy by standing Behind shallow lake, the supernatant of Fenton units enters microalgae photobiological reactor unit (after adjusting pH), passes through the photosynthesis of microalgae And heterotrophism biochemical reaction, utilize the proliferative cells such as organic matter, ammonia nitrogen, nitrate nitrogen, phosphorus in water.In this course, in water Pollutant is further removed, and effluent quality is promoted.Obtained microalgae biomass can be used as the original of animal feed or biodiesel Material reduces percolate treatment processing cost.
A kind of deep treatment method of landfill leachate tail water, specifically comprises the following steps:
(1) a certain amount of coagulant is added into landfill leachate tail water, is realized and is separated by solid-liquid separation in coagulation unit.It is described Coagulant is bodied ferric sulfate and polyacrylamide, and dosage is 0.1~2g/L.
(2) supernatant of coagulation unit enters Fenton units, adjusts supernatant pH to 4 or so, adds FeSO in proportion4 And hydrogen peroxide, and be sufficiently mixed and reacted with supernatant.Fenton units are using hydrogen peroxide in Fe2+Catalytic action under The hydroxyl radical free radical OH of formation destroys the hardly degraded organic substance in percolate, removes part COD, improves the B/C ratios in water. FeSO4·7H2The dosage of O and 30% hydrogen peroxide is respectively 0.08~0.8% and 0.2~3%, and water is in Fenton units Reaction time is 1~5h.After reaction, 1h, precipitation and separation and supernatant liquor are staticly settled.It is left that supernatant adjusts pH to 6.5 It is right.
(3) sludge (precipitation) that coagulation unit and Fenton unit bottoms generate, carries out after collecting and being dehydrated at concentration Reason.
(4) water outlet of Fenton units enters microalgae photobiological reactor unit progress advanced treating.Microalgae photobiological is anti- Device is answered to be made using clear perspex material, structure is similar to membrane bioreactor (MBR), plate membrane or hollow-fibre membrane group Part is submerged into microalgae solution.Microalgae cell can not be isolated in the outside of film by the micropore of film.Each pollutant in water is logical Cross microalgae itself fast breeding (being converted into microalgae cell biomass) be removed after, promoted effluent quality, water outlet through separation Film, which enters on the inside of film, to be collected.It, will be most of micro- after the microalgae density in bioreactor reaches a certain level Frustule solution is discharged, and obtains microalgae biomass by free settling, supernatant liquor then returns in bioreactor.To microalgae After processing is dried in biomass, you can be used as animal feed or produce the raw material of biodiesel.
(5) water outlet of microalgae photobiological reactor unit decides whether to be back to Fenton processing lists according to its water quality situation Member or direct emission.
Below in conjunction with concrete operations parameter, technical solution is further illustrated the present invention by embodiment.Art technology Personnel are not used in and are limited the scope of the invention it is to be understood that embodiment is merely to illustrate the present invention.
The salt-enduring strain used in embodiment is chlorella.
In embodiment, unless otherwise instructed, technological means used is this field conventional technology.
Embodiment 1:
Using the percolate ultra-filtration water of Jiangsu garbage burning factory as the water inlet of coagulation unit, the water quality of ultra-filtration water Situation approximately as:PH is 6.6 or so;A concentration of 500~600 mg/L of COD;Ammonia nitrogen concentration is 20~40mg/L;Total nitrogen concentration About 100~200mg/L;Total phosphorus concentration is about 2mg/L;Color is tea yellow, basic odorless.
Successively add Polyferric Sulfate Flocculants and polyacrylamide into ultra-filtration water, dosage be respectively 0.5g/L and 1.5mg/L.It is sufficiently stirred 10min after first adding bodied ferric sulfate in coagulation unit, polyacrylamide is added later and continues to stir 20min is mixed, mixing water is staticly settled by about 30min, is layered as supernatant liquor and lower sediment.Supernatant is entering Before Fenton oxidation units, add hydrochloric acid that pH is adjusted to 3.5.Lower sediment collects after separation, dehydration.
The pH of supernatant is after the adjustment to after 3.5, into Fenton oxidation unit.Adjust FeSO4·7H2O and 30% dioxygen The dosage of water is respectively 0.15% and 0.5%, is sufficiently mixed, and reaction time of the water in Fenton oxidation unit is 3h.Instead It after answering, staticly settles, is layered as supernatant liquor and lower sediment.Supernatant is entering microalgae photobiological reactor unit Before, pH is recalled to 6.5 or so.Lower sediment is after separation, and come to carrying out together with the precipitation of coagulation unit at dehydration concentration Reason.
In the present embodiment, the aeration control of microalgae photobiological reactor is 30L/h, intensity control 2000~ 3000Lux。
The microalgae bacterial strain used is salt-enduring strain, it is ensured that the growth of microalgae will not be influenced by higher salinity in water.When When microalgae density in bioreactor reaches 3g/L or more, microalgae cell liquid is discharged 90%, is left in reactor 10%.The cell liquid of discharge detaches microalgae cell by gravitational settling.After layering, it is anti-to return to microalgae photobiological for supernatant liquor It answers in device, after lower layer's microalgae cell biomass is collected, carries out centrifugal drying.
The water quality situation being discharged after processing is:PH is 6.8 or so;A concentration of 40 mg/L of COD;Ammonia nitrogen concentration is 1.2mg/L;Total nitrogen concentration is about 10mg/L;Total phosphorus concentration is about 0.5mg/L, and COD removal rates are more than 90%, and ammonia nitrogen removal frank is big In 75%, nitrogen removal rate is more than 80%, and total tp removal rate is 75%, and the COD, ammonia nitrogen, total nitrogen and total phosphorus concentration in water outlet are equal Meet《Household refuse landfill sites control standard》Emission limit standard in (GB 16889-2008) table 3.
Embodiment 2:
Using the percolate treatment of Hefei garbage burning factory as the water inlet of coagulation unit, the water quality situation of tail water is substantially It is as follows:PH is 6.2~6.7 or so;A concentration of 250mg/L of COD or so;Ammonia nitrogen concentration is 10~20mg/L;Total nitrogen concentration is about 60mg/L;Total phosphorus concentration is about 2mg/L;Color is shallow dark brown, free from extraneous odour.
The percolate treatment is handled using the method in embodiment 1, during test run, bodied ferric sulfate and Polyacrylamide, dosage are respectively 0.2g/L and 1mg/L, and supernatant liquor pH is adjusted to 3.2 or so;Adjust FeSO4·7H2O and The dosage of 30% hydrogen peroxide is respectively 0.08% and 0.27%, and reaction time of the water in Fenton oxidation unit is 2h, quiet It sets precipitation 1h, supernatant liquor pH and is adjusted to 6.7 or so.The aeration control 30L/h of microalgae photobiological reactor unit, light intensity control For system in 2000~3000Lux, temperature is 32~35 DEG C.
Other operations are the same as embodiment 1.
The water quality situation being discharged after processing is:PH is 6.9 or so;A concentration of 27 mg/L of COD;Ammonia nitrogen concentration is 3.2mg/L;Total nitrogen concentration is about 14mg/L;Total phosphorus concentration is about 0.45mg/L;COD totality removal rates are more than 89%, and ammonia nitrogen is gone Except rate is more than 70%, nitrogen removal rate is more than 76%, and total tp removal rate is about 77%.COD, ammonia nitrogen, total nitrogen in water outlet and total Phosphorus concentration is satisfied by《Household refuse landfill sites control standard》Emission limit standard in (GB 16889-2008) table 3.
Embodiment 3:
Using the percolate bio-chemical effluent of Jiangsu garbage burning factory as the water inlet of coagulation unit, the water quality of bio-chemical effluent Situation approximately as:PH is 6.5~6.9;A concentration of 1200mg/L of COD or so;Ammonia nitrogen concentration is 45~60mg/L;Total nitrogen is dense Degree is about 300mg/L;Total phosphorus concentration is about 2.3mg/L.
The percolate bio-chemical effluent is handled using the method in embodiment 1, during test run, polyaluminum sulfate Iron and polyacrylamide, dosage are respectively 1g/L and 2mg/L, and supernatant liquor pH is adjusted to 3 or so;Adjust FeSO4·7H2O and The dosage of 30% hydrogen peroxide is respectively 0.7% and 3%, and reaction time of the water in Fenton oxidation unit is 3h, and it is heavy to stand Shallow lake 1h, supernatant liquor pH are adjusted to 6.6 or so.The aeration control 30L/h of microalgae photobiological reactor unit, intensity control exist 2000~3000Lux, temperature are 33~35 DEG C.
Other operations are the same as embodiment 1.
The water quality situation being discharged after processing is:PH is 7.1 or so;A concentration of 42 mg/L of COD;Ammonia nitrogen concentration is 4.1mg/L;Total nitrogen concentration is about 16.7mg/L;Total phosphorus concentration is about 0.52mg/L;COD removal rates are more than 96%, ammonia nitrogen removal Rate is more than 91%, and nitrogen removal rate is more than 94%, and total tp removal rate is about 77%.COD, ammonia nitrogen, total nitrogen in water outlet and total phosphorus Concentration is satisfied by《Household refuse landfill sites control standard》Emission limit standard in (GB 16889-2008) table 3.
Above embodiment is only that the specific implementation mode of the present invention is described, and is not carried out to the scope of the present invention It limits, those skilled in the art can also do numerous modifications and variations, not depart from design of the present invention on the basis of existing technology Under the premise of spirit, all variations and modifications that this field ordinary engineering and technical personnel makes technical scheme of the present invention, It should fall into the protection domain of claims of the present invention determination.

Claims (10)

1. a kind of percolate treatment processing method based on advanced oxidation group technology, which is characterized in that include the following steps:
(1) a certain amount of coagulant is added into landfill leachate tail water, and separation is realized in coagulation unit after standing;It is described mixed Solidifying agent be bodied ferric sulfate, polyacrylamide, polyaluminum ferric chloride, aluminium polychloride, poly-ferric chloride, polysilicon acid flocculant, Chitosan flocculant, in it is one or more;
(2) supernatant of coagulation unit enters Fenton units, adjusts supernatant pH to 3.5~4.5, adds FeSO4And dioxygen Water, and be sufficiently mixed and reacted with supernatant;
(3) water outlet of Fenton units enters microalgae photobiological reactor progress advanced treating.
2. the percolate treatment processing method according to claim 1 based on advanced oxidation group technology, which is characterized in that The coagulant is bodied ferric sulfate and polyacrylamide, and dosage is 0.1~2g/L.
3. the percolate treatment processing method according to claim 1 based on advanced oxidation group technology, which is characterized in that In step (2), by FeSO4·7H2O and 30% hydrogen peroxide meter, FeSO4Dosage with hydrogen peroxide is respectively 0.08~0.8% He 0.2~3%, reaction time of the water in Fenton units is 1~5h.
4. according to percolate treatment processing method of the claims 1 to 3 any one of them based on advanced oxidation group technology, It is characterized in that, in step (2), the FeSO4With the addition of hydrogen peroxide as the pollutant of the landfill leachate tail water contains Amount increases and increases, by FeSO4·7H2O and 30% hydrogen peroxide meter, when in the landfill leachate tail water COD be 400~ 600mg/L, then FeSO4Dosage with hydrogen peroxide is 0.08~0.2% and 0.2~0.6%, when the landfill leachate tail water Middle COD is 1000~1400mg/L, then FeSO4Dosage with hydrogen peroxide is 0.2~0.8% and 2~3%.
5. according to percolate treatment processing method of the claims 1 to 3 any one of them based on advanced oxidation group technology, It is characterized in that, step (2) after reaction, staticly settles 1h, precipitation and separation and supernatant liquor, and supernatant liquor adjusts pH to 6~7 Enter the microalgae photobiological reactor afterwards.
6. according to percolate treatment processing method of the claims 1 to 3 any one of them based on advanced oxidation group technology, It is characterized in that, the sludge of coagulation unit and the generation of Fenton unit bottoms is focused on after collecting and being dehydrated.
7. according to percolate treatment processing method of the claims 1 to 3 any one of them based on advanced oxidation group technology, It is characterized in that, the microalgae photobiological reactor is made using transparent material, and plate membrane or doughnut are provided in reactor Membrane module, plate membrane or hollow fiber film assembly are submerged into microalgae solution, and water outlet, which enters through seperation film on the inside of film, to be collected.
8. the percolate treatment processing method according to claim 7 based on advanced oxidation group technology, which is characterized in that Microalgae in the microalgae photobiological reactor is salt-enduring strain, one kind in Wild Vitis species, Nannochloropsis oculata, chlorella.
9. the percolate treatment processing method according to claim 7 based on advanced oxidation group technology, which is characterized in that The temperature of the microalgae photobiological reactor controls between 32~38 DEG C, and intensity control is between 2000~3000Lux.
10. according to percolate treatment processing method of the claims 1 to 3 any one of them based on advanced oxidation group technology, It is characterized in that, when the microalgae density in microalgae photobiological reactor reaches 3g/L or more, microalgae cell liquid is discharged 80~95%, the cell liquid of discharge detaches microalgae cell by gravitational settling;After layering, supernatant liquor returns to the microalgae In bioreactor, after lower layer's microalgae cell biomass is collected, centrifugal drying.
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CN109368801A (en) * 2018-11-23 2019-02-22 江苏大学 A method of the light based on microalgae helps Fenton-like system to handle organic pollutants in water body
CN109665677A (en) * 2019-02-22 2019-04-23 合肥市东方美捷分子材料技术有限公司 A kind of terrace-type garbage percolation liquid treating system
CN110102165A (en) * 2019-04-29 2019-08-09 上海交通大学 The method that landfill leachate concentration liquid prepares deodorant

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CN109368801A (en) * 2018-11-23 2019-02-22 江苏大学 A method of the light based on microalgae helps Fenton-like system to handle organic pollutants in water body
CN109665677A (en) * 2019-02-22 2019-04-23 合肥市东方美捷分子材料技术有限公司 A kind of terrace-type garbage percolation liquid treating system
CN110102165A (en) * 2019-04-29 2019-08-09 上海交通大学 The method that landfill leachate concentration liquid prepares deodorant

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