CN108178389A - A kind for the treatment of process of preserved fruit waste water - Google Patents

A kind for the treatment of process of preserved fruit waste water Download PDF

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Publication number
CN108178389A
CN108178389A CN201810076708.3A CN201810076708A CN108178389A CN 108178389 A CN108178389 A CN 108178389A CN 201810076708 A CN201810076708 A CN 201810076708A CN 108178389 A CN108178389 A CN 108178389A
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waste water
preserved fruit
membrane
treatment
water
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CN108178389B (en
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曾孟祥
马仁杰
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Xiamen University of Technology
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Xiamen University of Technology
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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
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/442Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • 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
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • 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
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104Devices therefor; Their operating or servicing
    • 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
    • C02F1/5281Installations for water purification using chemical agents
    • 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
    • C02F2103/32Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters

Abstract

The present invention provides a kind for the treatment of process of preserved fruit waste water, is related to water-treatment technology field.The treatment process of this preserved fruit waste water includes:Coagulant is added in preserved fruit waste water, is stirred to react 20~40min, is then placed in sedimentation basin, removes sediment.Then the water after precipitation process is transferred in sand filter, the waste water after sand filtration enters in active carbon filter, removes suspended matter and mucilage particle in water.Then by the waste water after coarse filtration after Ultra filtration membrane, using nanofiltration UF membrane, particle, colloid, bacterium and organic matter in water are removed, wherein, the concentrate retained by ultrafiltration membrane and microfiltration membranes passes through microelectrolysis processing, is then return to the UF membrane step process.By pre-treatments such as coagulating sedimentation, sand filtration, activated carbon filterings, film separation system is entered back into, can effectively reduce fouling membrane, and the concentrate after UF membrane is focused on, reduces the discharge of high salinity waste water pollutant.

Description

A kind for the treatment of process of preserved fruit waste water
Technical field
The present invention relates to water-treatment technology field, and more particularly to a kind for the treatment of process of preserved fruit waste water.
Background technology
Preserved fruit waste water is the waste water that is generated during preserved fruit produce, the characteristics of having its own due to preserved fruit waste water, discomfort The existence of suitable microorganism is greatly constrained using bioanalysis on processing preserved fruit waste water.Object is generally used in the prior art Logos handles preserved fruit waste water, specifically includes following several treatment process:
(1) " preaeration regulating reservoir+IC+A/O+ active sands filtering+multi-medium filtering " processing jujube production waster water process, Anaerobic organism reaction occurs in IC reactors for the technology utilization waste water, reduces the COD indexs of water, is passing through follow-up anaerobic-aerobic Biological treatment utilizes microorganism adsorption pollutant in water.But IC reactors there are hydraulic detention time it is short the problem of, can increase The burden in oxygen stage.Due to cycle in IC gas reactors so that effluent quality is unstable, so as to influence the effect of subsequent processing, Cause final outflow water water quality unstable.In addition this technique needs professional's maintenance operation, causes operating cost higher.
(2) " electrochemistry+medicament clarification+MBR " handles preserved fruit technique with high salt, and the technology is micro- using the iron carbon of galvanic principles Electrolysis reactor in acid condition, occurs redox reaction, the substance of bio-refractory is made to be changed into easy biochemical degradation Substance.Then the characteristic of modification infusorial earth is utilized, useless water part chlorion is removed, reduces salinity.Finally selection MBR is replaced Secondary settling tank improves the removal rate of pollutant.But electrochemical process and MBR are a kind of higher investment and energy consumption, processing cost height Processing method.In the process of running, for electrochemical process easily by electrode fouling, MBR easily by fouling membrane, increases this work The operating cost of skill.
(3) " air supporting-anaerobic hydrolysis-acidification-SBR " combined treatment preserved fruit dried bean curd technique waste water, the technique is in processing preserved fruit During waste water, since its pH value is low, salinity is high, organic pollutant molecule quality is big, osmotic pressure is high, can draw microbial cell dehydration Cellular plasm separation is played, salting out reduces dehydrogenase activity, and the density increase of waste water makes activated sludge easily float loss, So as to seriously affect the effect of biological treatment.And bioanalysis takes up a large area, and needs professional's maintenance operation.
(4) " Fenton oxidation method " handles organic high-salt wastewater, is both passed through using catalyst, light radiation or electrochemical action The technology of hydroxyl radical free radical processing organic matter that hydrogen peroxide generates, has unique advantage when handling hardly degraded organic substance, It is a kind of very promising Technologies for Organic Wastewater Treatment with high salt.But since ferrous salt and hydrogen peroxide use are big, use Fenton Reagent processing cost can be very high.
Invention content
The purpose of the present invention is to provide a kind for the treatment of process of preserved fruit waste water, this treatment process is simple, is easy to grasp Make, one-time investment is at low cost, high treating effect.
The present invention is solved its technical problem and is realized using following technical scheme.
The present invention proposes a kind for the treatment of process of preserved fruit waste water, includes the following steps:
Coagulating sedimentation step:Coagulant is added in preserved fruit waste water, 20~40min is stirred to react, is then placed in sedimentation basin, Remove sediment;
Coarse filtration step:Water after precipitation process is transferred in sand filter, the waste water after sand filtration enters activated carbon mistake In filter, suspended matter and mucilage particle in water are removed;
UF membrane step:It by the waste water after coarse filtration after ultrafiltration system detaches, detaches, removes using nanofiltration system Particle, colloid, bacterium and organic matter in water, wherein, the concentrate retained by ultrafiltration system and microfiltration systems is by micro- Electrolysis is handled, and is then return to the UF membrane step process.
The advantageous effect of the treatment process of the preserved fruit waste water of the embodiment of the present invention is:
Compared with the biological methods such as existing IC reactors, preserved fruit waste water of mainly directly being gone out by way of logistics retention In pollution components, have that processing procedure is easy to operate, effluent quality higher, more stable advantage.Simultaneously in processing procedure, The processing method being adapted with preserved fruit waste water characteristic is designed, since the suspension contents such as pectin are high in preserved fruit waste water, viscosity is big, Preserved fruit waste water first pass through coagulating sedimentation, sand filtration, activated carbon filtering multiple tracks pre-treatment, the effectively catching fouling membrane group of big granularity Point, then membrane separation is carried out, greatly reduce fouling membrane, the risk blocked, reduced Membrane cleaning during membrane separation, repair Multiple cost.
In addition, the concentrate of membrane separation retention is carried out microelectrolysis processing, the concentrate is compared to preserved fruit waste water body Product greatly reduces, and the organic matter containing high concentration, and microelectrolysis processing is carried out to it and then again through membrane separation, is effectively reduced Pollutant, and the requirement to light electrolysis equipment substantially reduces.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair The restriction of range, for those of ordinary skill in the art, without creative efforts, can also be according to this A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the process flow chart of the embodiment of the present invention 1.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below will be in the embodiment of the present invention Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, builds according to normal condition or manufacturer The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase Product.
The treatment process of the preserved fruit waste water of the embodiment of the present invention is specifically described below.
A kind for the treatment of process of preserved fruit waste water provided in an embodiment of the present invention, includes the following steps:
Coagulating sedimentation step:Coagulant is added in preserved fruit waste water, 20~40min is stirred to react, is then placed in sedimentation basin, Remove sediment;
Coarse filtration step:Water after precipitation process is transferred in sand filter, the waste water after sand filtration enters activated carbon mistake In filter, suspended matter and mucilage particle in water are removed;
UF membrane step:It by the waste water after coarse filtration after ultrafiltration system detaches, detaches, removes using nanofiltration system Particle, colloid, bacterium and organic matter in water, wherein, the concentrate retained by ultrafiltration system and microfiltration systems is by micro- Electrolysis is handled, and is then return to the UF membrane step process.
Further, in present pre-ferred embodiments, pre-treatment step is further included:The preserved fruit waste water is by grid point Enter regulating reservoir from rear, the pH value for adjusting the preserved fruit waste water is 6~8.
Further, in present pre-ferred embodiments, in coagulating sedimentation step, coagulant is selected from green vitriol It is one or more in ammonium, aluminum sulfate, ferric trichloride, ferrous sulfate, alum, the inventory of the coagulant for 0.3~ 0.5g/L.Further, to select green vitriol ammonium, dosage 0.4g/L, mixing speed control exists coagulant 50r/min, reaction time 25min.Water merging sedimentation basin after abundant coagulation, coagulation and precipitation can remove overwhelming majority suspension Object and pectin can also remove a part of COD and ammonia nitrogen.
Further, in present pre-ferred embodiments, in coarse filtration step, the filler of the sand filter be grain size be 3~ The quartz sand of 5mm.Preferably, pressure sand filter is selected, preserved fruit waste water passes through filtrate, makes pollutant in water quilt Filter layer is retained down and is purified, and as filter inlet outlet pressure differential △ P >=0.05~0.07MPa, shows that sand filter needs Backwash is wanted, flow backwash is controlled to when intaking close with the water quality transparency of draining, constantly reduces backwash flow, in favor of filter Material is by granular size delaminating deposition.
Further, in present pre-ferred embodiments, in coarse filtration step, the filler of active carbon filter is that granularity is The active fruit shell carbon of 0.4~2.4mm, activated carbon are cylindrical type, spherical shape, hollow ball-type or hollow cylindrical.Preferably, it selects and fixes Bed active carbon filter, the water outlet of periodic detection active carbon filter when activated carbon adsorption saturation, replace activity in time Charcoal.
Further, in present pre-ferred embodiments, in UF membrane step, ultrafiltration system uses the ceramics of ultrafiltration rank For film as membrane module, the aperture of ceramic membrane is 10~90nm.Preferably, the ultrafiltration membrane of selection is 181 tubular type ultrafiltration ceramic membranes, is adopted It is carried out with the mode of cross-flow filtration, waste water forms cross-flow filtration in the inner surface of tubular ceramic membrane, and a part of waste water is led to tangent line The mode crossed filters out, and another part waste water forms turbulent flow in pipeline, constantly rinses the inner surface of ceramic membrane, will be attached on a small quantity Solid content on film is taken away, and effectively prevent the blocking of ceramic membrane, ensures being smoothed out for membrane separating process.Institute further, surpasses The operating pressure of filter system is 0.05~0.3MPa, further improves membrane separating effect.
Further, in present pre-ferred embodiments, in UF membrane step, nanofiltration system uses aperture as 0.1~1nm Composite nanometer filtering film.Composite nanometer filtering film in the present embodiment can use existing 250 composite membrane, can also use homemade multiple Close NF membrane.Preferably, homemade composite nanometer filtering film is made using following steps:
(1) by the piperazine of a concentration of 0.3wt%, 0.2wt% sodium hydroxides are dissolved in deionized water, are added a concentration of 0~0.07wt% modified Nanos TiO2, ultrasonic 10min;The polysulfones support membrane of hygrometric state is immersed, dip time 5min, taken out Support film surface is rolled with squeegee afterwards, is extracted.Wherein, modified Nano TiO2Preparation method be:It is 1wt%'s by content TiO2Ultrasonic disperse adds in 2.5wt% tannic acid solution ultrasound 20min in aqueous solution, adds in 5wt% liquor ferri trichloridis, The lower reaction 2min of stirring, centrifugation clean, are dry, obtain modified TiO2
(2) pyromellitic trimethylsilyl chloride of a concentration of 0.15wt% is dissolved in hexamethylene;By membrane material made from step (1) It is immersed, reaction time 0.5min, takes out, be heat-treated 30 minutes in 60 DEG C of baking ovens.Then number is rinsed with deionized water After secondary, obtain containing TiO2Composite nanometer filtering film.
Utilize tannic acid and Fe3+Functional skin layer is formed on nano-particle by chelation crosslinking, modified Nano particle passes through Interfacial polymerization is supported on polysulfones support membrane, stable structure, and more preferably, membrane separating effect is more excellent, and service life for hydrophily It is long.
Further, the operating pressure of nanofiltration system is 0.2~0.7MPa, under the operating pressure, can be improved to useless The removal efficiency of water pollutant.
Further, in present pre-ferred embodiments, the concentrate obtained through membrane separation (is retained including ultrafiltration system Concentrate and nanofiltration system retention concentrate) carry out microelectrolysis processing the step of be:Concentrate enters iron-carbon filling material tower, stops The time (HRT) is stayed as 30~60min, the pH for adjusting concentrate is 4~10, and iron charcoal mass ratio is 1~3:1, aeration quantity for 1.5~ 3L/min.It is aerated Fe-C micro electrolysis processing simultaneously, can effectively prevent the hardened effect of iron, improve COD removal rates.Further Ground, pH value 4, Fe/C 1, HRT 45min, aeration size be 3L/min, the effect being optimal.
It is further preferred that it is in advance 1 by mass ratio:1:0.01 iron powder, activated carbon, catalyst are in H2In atmosphere, 1~1.5h is sintered under the conditions of 850~1000 DEG C, the sodium borohydride for then adding in iron powder quality 0.1% grinds the mixed of 1~2h acquisitions Close filler of the object as iron-carbon filling material tower.Catalyst is preferably Ln2O3.Said mixture formation Zero-valent Iron-catalyst-reduction agent- The micro cell system of activated carbon can improve the treatment effeciency of waste water, effectively overcome existing iron-carbon micro-electrolytic material in waste water Reaction speed is slow in processing procedure, is easy to be passivated the shortcomings of hardened.
The feature and performance of the present invention are described in further detail with reference to embodiments.
Embodiment 1
As shown in Figure 1, a kind for the treatment of process of preserved fruit waste water provided in this embodiment, the generation of certain preserved fruit processing factory The water quality of preserved fruit waste water is as shown in table 1:
Table 1
Preserved fruit waste water in wastewater disposal basin enters grid pond, subsequently into regulating reservoir, uses Na2CO3Adjust pH to 6.5 or so.Into Enter coagulating basin, add in green vitriol ammonium for 0.4g/L according to inventory, 25min is stirred to react under the conditions of 50r/min, Sedimentation basin is placed in, removes sediment.Then waste water is made to pass through the filtrate of sand filter, filtrate is the quartz of 3~5mm Sand.By from the waste water that sand filter flows out, by activated carbon and fixed bed filter, filtrate is the fruit between granularity is 0.4~2.4mm Shell activated carbon.The waste water flowed out from activated carbon and fixed bed filter enters ultrafiltration system, and molecular cut off is 6000~20000, Operating pressure is 0.1MPa.Subsequently into nanofiltration system, molecular cut off is 800~1000, operating pressure 0.5MPa.Through super Filter system and the concentrate of nanofiltration system retention enter iron-carbon filling material tower, and adjusting pH value is 4, Fe/C 1, HRT 45min, is exposed Gas size is 3L/min.Enter ultrafiltration system after the completion of reaction, move in circles.
Water quality situation is as shown in table 2 after processing.
Table 2
Processing cost is as follows:
Power consumption:A set of wastewater treatment capacity is that the membranous system general assembly acc power of 40t/h is about 125kW, by 0.6 yuan of the electricity charge/degree Meter, the electricity charge needed for waste water per ton are:It is 1.875 first.
Labour cost:Wastewater treatment operations work 2, wherein day shift 1, night shift 1, everyone wage is based on 2500 yuan/month, film Processing equipment is calculated for 16 hours by average booting daily, and the labour cost of waste water per ton is:2500 × 2 ÷, 30 ÷, 40 ÷ 16=0.26 Yuan/ton.
Medicament expense is calculated as shown in table 3:
Table 3
Depreciation cost is calculated:
Ultrafiltration membrane is ceramic membrane, and the stage of replacement is generally 5 years, and the price of the more membranous system of transducer set 40t/h is about 200000 yuan, then the film of water per ton, which is lost, is:It is 200000/365/5/40/16=0.16 first.
NF membrane ultrafiltration membrane is composite membrane system, and the stage of replacement is generally 3 years, the more valency of the membranous system of transducer set 40t/h Lattice are about 600000 yuan, then the film loss of water per ton is:It is 600000/365/3/40/16=0.85 first.
Light electrolysis equipment is iron-carbon filling material tower, and the processing cost of water per ton is 0.5 yuan, and about 0.07 ton of waste water generation per ton is dense Contracting liquid, then the light electrolysis loss of water per ton are:0.5*0.07=0.035 members.
It amounts to, the expense of one ton of water of processing is about 3.84 yuan.
Test example investigates the light electrolysis condition of concentrate
1. orthogonal test analysis
Orthogonal test:Determine that four factors are Fe/C, pH value, HRT and aeration quantity, and each factor is each determines three levels Condition, for weighing the influence size of these factors, design result is as shown in following table 4.5:
4 orthogonal test of table, four factor and three levels
5 orthogonal experiments of table
It is obtained by table 5:Fe-C micro electrolysis processing nanofiltration concentrate orthogonal experiments show, more than four conditions pair The degree of COD removal rates is respectively pH value>Fe/C>HRT>Aeration quantity.Wherein, hydrogen ionexponent influences maximum, optimal set It is 4, Fe/C be 1, HRT is half an hour that conjunction condition, which is pH value, and aeration size is 1.50 liters/min, and COD degradation rate is at this time 60.25%.
2. single-factor variable tests impact analysis
2.1pH value single-factor variable experimental analyses
The fixed iron charcoal mass values of this experiment are filled in for 1 in 5 beakers for being respectively provided with 100mL solution, fixed activity The quality of charcoal is 2g, and control HRT is 0.5h, and aeration quantity is 1.5 liters/min, respectively under conditions of pH value is 3,4,7,8,10 Implement five groups of experiments, take its COD of water sample detection after testing in right amount.
In pH value under conditions of 3,4,7,8,10, corresponding COD removal rates are respectively 53.33%, 58.46%, 37.95%th, 33.85%, 27.69%.In the case of weak acid, the potential difference increase at iron and charcoal the two poles of the earth, anode and cathode reaction speed increases Greatly, microelectrolysis processing is more efficient.When pH value is 4, COD removal rates are best, are 58.46%.When pH be more than 4, COD degradation amount It reduces, galvanic interaction ability is caused to decline the reason is that basicity crosses conference, influence the removal ability of COD instead.But in pH mistakes When low, not only iron consumption is big, but also the hydrogen generated due to electrode reaction is strong is attached to electrode surface, the film that two interpolars generate Iron and charcoal reaction are hindered, finally can also make the decline of its respond.The experimental results showed that:When pH value is 4, nanofiltration concentrate Clean effect it is best.
The single-factor variable experimental analysis of 2.2 iron charcoal mass ratioes
This experiment control HRT is half an hour, and pH value 4 takes 100 milliliters of solution, and the quality of fixed activated carbon is 2g, is aerated It is 1.5 liters/min to measure, and it is to carry out five groups of experiments under conditions of 0.5,1,2,3,4 to control Fe/C respectively, takes water sample after appropriate experiment Detect COD.
When iron charcoal mass values are 0.5,1,2,3,4, corresponding COD removal rates are respectively 58.21%, 58.46%, 55.90%th, 48.21%, 43.08%.Fe/C values are bigger, and COD degradation amount first improves to be continuously decreased again.It traces it to its cause:In solution Iron and activated carbon can form primary battery, the increase of iron charcoal mass ratio, to a certain extent the primary battery of iron and activated carbon increase, Electrode reaction is accelerated, and pollution degradation is strong.Single excessive Fe oxidations generate excessive Fe2+Subsequent processing can be complicated.Experiment knot Fruit can obtain:Iron charcoal mass ratio is set as 1:1, the clean effect of concentrate is best.
The single-factor variable experimental analysis of 2.3HRT
100 milliliters of solution is taken, the quality of fixed activated carbon is 2g.This experiment control pH value is 1 for 4, Fe/C, aeration quantity It is 1.5 liters/min, is respectively to take appropriate solution under conditions of 10 minutes, 20 minutes, 30 minutes, 45 minutes, 60 minutes in HRT Detect its COD.
When HRT is 10 minutes, 20 minutes, 30 minutes, 45 minutes, 60 minutes, corresponding COD removal rates are respectively 40.51%th, 51.79%, 58.46%, 59.82%, 58.69%.In 10~45 minutes that experiment carries out, removal amount increases always Add.After 45min, COD removal rates are declined slightly.The reason is that according to micro-electrolysis reaction principle it is found that with reaction constantly into It goes, the H in cathode+It obtains electronically forming hydrogen, H+Reduction make primary battery alkalinity enhance, slow down so as to cause galvanic interaction, COD removal efficiency slows down.Experimental result can obtain as a result,:HRT is arranged to 45 minutes, and the decontamination effect of concentrate is best.
The single-factor variable experimental analysis of 2.4 aeration quantity
It is 1, HRT is half an hour that this experiment control pH value, which is 4, Fe/C, takes 100 milliliters of concentrates, the matter of fixed activated carbon It measures as 2g.Aeration quantity be respectively 0.00 liter/min, 0.75 liter/min, 1.50 liters/min, 2.25 liters/min, 3.00 liters/ Minute carries out appropriate solution being taken to detect its COD under conditions of five groups of experiments.While aeration quantity increases, corresponding pollution The removal amount of object is also bigger.Aeration quantity for 0.00 liter/min, 0.75 liter/min, 1.50 liters/min, 2.25 liters/min, At 3.00 liters/min, corresponding COD removal rates are respectively 37.46%, 46.03%, 57.46%, 58.72%, 59.50%.Study carefully The reason is that the increase of aeration quantity can improve O2Meltage, oxidation enhancing, effectively hinder iron filings condensation.In addition it is aerated The bubble of generation can also accelerate the progress of galvanic interaction.Aeration quantity is set as 3.00 liters/min, the decontamination effect of nanofiltration concentrate Fruit is best.
2.5 verification optimum experimental conditions
It is 4 to test to obtain pH value by the single-factor variable for controlling iron-carbon micro-electrolysis above, and iron charcoal mass values are that 1, HRT is 45 minutes, aeration size for 3.00 liters/min be light electrolysis optimal experiment condition.One is carried out under more than optimum experimental condition It is as shown in table 6 below that group confirmatory experiment can obtain COD numerical value:
Table 6
Embodiments described above is part of the embodiment of the present invention, instead of all the embodiments.The reality of the present invention The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of the selected implementation of the present invention Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts Every other embodiment, shall fall within the protection scope of the present invention.

Claims (9)

1. a kind for the treatment of process of preserved fruit waste water, which is characterized in that it includes the following steps:
Coagulating sedimentation step:Coagulant is added in preserved fruit waste water, is stirred to react 20~40min, is then placed in sedimentation basin, is removed Sediment;
Coarse filtration step:Water after precipitation process is transferred in sand filter, the waste water after sand filtration enters active carbon filter In, remove the suspended matter and mucilage particle in water;
UF membrane step:It by the waste water after coarse filtration after ultrafiltration system detaches, detaches, is removed in water using nanofiltration system Particle, colloid, bacterium and organic matter, wherein, the concentrate retained by ultrafiltration system and microfiltration systems pass through light electrolysis Processing, is then return to the UF membrane step process.
2. the treatment process of preserved fruit waste water according to claim 1, which is characterized in that further include pre-treatment step:It is described Preserved fruit waste water enters regulating reservoir after grid detaches, and the pH value for adjusting the preserved fruit waste water is 6~8.
3. the treatment process of preserved fruit waste water according to claim 1, which is characterized in that in the coagulating sedimentation step, institute It is one or more in green vitriol ammonium, aluminum sulfate, ferric trichloride, ferrous sulfate, alum to state coagulant, The inventory of the coagulant is 0.3~0.5g/L.
4. the treatment process of preserved fruit waste water according to claim 1, which is characterized in that in the coarse filtration step, the sand The filler of filter is the quartz sand that grain size is 3~5mm.
5. the treatment process of preserved fruit waste water according to claim 1, which is characterized in that in the coarse filtration step, the work Property carbon filter filler be active fruit shell carbon that granularity is 0.4~2.4mm, the activated carbon is cylindrical type, spherical shape, hollow ball Type or hollow cylindrical.
6. the treatment process of preserved fruit waste water according to claim 1, which is characterized in that described in the UF membrane step For ultrafiltration system using the ceramic membrane of ultrafiltration rank as membrane module, the aperture of ceramic membrane is 10~90nm.
7. the treatment process of preserved fruit waste water according to claim 1, which is characterized in that described in the UF membrane step Nanofiltration system uses composite nanometer filtering film of the aperture for 0.1~1nm.
8. the treatment process of preserved fruit waste water according to claim 1, which is characterized in that the concentrate is carried out at light electrolysis The step of reason is:The concentrate enters iron-carbon filling material tower, and the residence time is 30~60min, adjust the pH of concentrate for 4~ 10, iron charcoal mass ratio is 1~3:1, aeration quantity is 1.5~3L/min.
9. the treatment process of preserved fruit waste water according to claim 1, which is characterized in that described in the UF membrane step The operating pressure of ultrafiltration system is 0.05~0.3MPa, and the operating pressure of the nanofiltration system is 0.2~0.7MPa.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101376546A (en) * 2008-09-02 2009-03-04 北京桑德环保集团有限公司 Coking advanced waste treatment system and processing method
CN105540967A (en) * 2015-12-09 2016-05-04 大唐国际化工技术研究院有限公司 Processing method for reducing and recycling organic waste water and processing system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101376546A (en) * 2008-09-02 2009-03-04 北京桑德环保集团有限公司 Coking advanced waste treatment system and processing method
CN105540967A (en) * 2015-12-09 2016-05-04 大唐国际化工技术研究院有限公司 Processing method for reducing and recycling organic waste water and processing system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
解建宝,蔺昌宇主编: "《600MW火电机组培训教材 辅助系统分册》", 30 November 2006 *

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