CN107324619A - A kind of microelectrolysis processing technique of wastewater from chemical industry - Google Patents
A kind of microelectrolysis processing technique of wastewater from chemical industry Download PDFInfo
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- CN107324619A CN107324619A CN201710789858.4A CN201710789858A CN107324619A CN 107324619 A CN107324619 A CN 107324619A CN 201710789858 A CN201710789858 A CN 201710789858A CN 107324619 A CN107324619 A CN 107324619A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 89
- 238000012545 processing Methods 0.000 title claims abstract description 32
- 239000000126 substance Substances 0.000 title claims abstract description 30
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
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- 238000001556 precipitation Methods 0.000 claims abstract description 20
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 16
- 230000003647 oxidation Effects 0.000 claims abstract description 15
- 230000003197 catalytic effect Effects 0.000 claims abstract description 13
- 238000009833 condensation Methods 0.000 claims abstract description 13
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 25
- 229910052760 oxygen Inorganic materials 0.000 claims description 25
- 239000001301 oxygen Substances 0.000 claims description 25
- 238000005273 aeration Methods 0.000 claims description 18
- 239000010865 sewage Substances 0.000 claims description 18
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims description 16
- 244000005700 microbiome Species 0.000 claims description 13
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- 230000001105 regulatory effect Effects 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 239000006228 supernatant Substances 0.000 claims description 10
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 8
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- 239000000463 material Substances 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 6
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- 239000000706 filtrate Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
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- GSLTVFIVJMCNBH-UHFFFAOYSA-N 2-isocyanatopropane Chemical compound CC(C)N=C=O GSLTVFIVJMCNBH-UHFFFAOYSA-N 0.000 description 1
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- 230000000813 microbial effect Effects 0.000 description 1
- KUWAAZMPJBFLEO-UHFFFAOYSA-N n,n,2-trichloroaniline Chemical compound ClN(Cl)C1=CC=CC=C1Cl KUWAAZMPJBFLEO-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
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Classifications
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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
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46176—Galvanic cells
-
- 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
-
- 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
-
- 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
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/343—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the pharmaceutical industry, e.g. containing antibiotics
-
- 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
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- 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
- C02F3/30—Aerobic and anaerobic 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)
- Activated Sludge Processes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention belongs to chemical wastewater treatment field, and in particular to a kind of microelectrolysis processing technique of wastewater from chemical industry, including Wastewater Pretreatment, waste water homogeneous, biochemical treatment, precipitation discharge, the big step of Treatment of Sludge five.The present invention carries out the pretreatment of the steps such as light electrolysis coagulating sedimentation photochemical catalytic oxidation before waste water carries out biochemical treatment, wherein microelectrolysis processing sloughs chromophoric group and auxochrome group in waste water, reach the purpose of discoloration, and the component of waste water is changed to biochemical direction is easy to, biodegradability is greatly improved.Coagulating kinetics make nascent state Fe2+、Fe3+The generation precipitation Fe in alkaline environment（OH）2And Fe（OH）3, coordinate flocculant PAM, in waste water original suspension, colloid, oils etc. and quite a few water soluble organic substance can be won over by any means by it, adsorption-condensation and from waste water precipitation and separation.Photochemical catalytic oxidation makes the clearance of useless Organic substance in water be improved up to more than 40%, B/C to more than 0.4, is that follow-up biochemical treatment creates advantage.
Description
Technical field
The invention belongs to chemical wastewater treatment field, and in particular to a kind of microelectrolysis processing technique of wastewater from chemical industry.
Background technology
Leading products are the medicineization of trichloroaniline, hydroxy-methylbenzene, high-hydroscopicity fire extinguishing resin and isopropyl isocyanate
Factory, its pharmaceutical-chemical intermediate produce and sell every workshop raw material hydrolysis, centrifugation etc. process generate multiply technique waste water,
Water rushes the waste water such as pump waste water, condensation cooling water, kettle washing water.Waste component is complicated, concentration is high, containing phenol, aniline category matter amount
Colour developing organic matter in height, and some raw material, intermediate product and product residue thing, wherein phenol type substances are to microorganism
Metabolism has stronger inhibition.Biochemical process typically is used to the processing of such medicine producing wastewater at present, it is difficult to effectively reduction
Phenol in wastewater class material, directly enters biochemical system it is difficult to ensure that microorganism is normal using containing the higher waste water of phenol type substances
Domestication, causes wastewater biodegradability poor, so as to add wastewater treatment expense, effluent quality is unstable.
The content of the invention
To solve the problem of above technology is present, the present invention provides a kind of microelectrolysis processing technique of wastewater from chemical industry, useless
Water pre-processed before biochemical treatment, 40%, B/C of organic removal rate arrival in waste water is improved to more than 0.4, is
Subsequent biochemical processing creates conditions.
Its technical scheme is：
A kind of microelectrolysis processing technique of wastewater from chemical industry, is followed the steps below：
（1）Wastewater Pretreatment：
A. microelectrolysis processing：By each plant effluent collect after, be pumped up to iron carbon pond, at the same add the concentrated sulfuric acid adjust pH value to
3 or so, roots blower supply carries out iron-carbon micro-electrolysis, waste water residence time in iron carbon pond is about 2h；
Iron carbon adds the concentrated sulfuric acid in pond, and countless microcosmic galvanic cells are constituted by the use of iron filings and carbon as both positive and negative polarity.Bar is oxygenated in acidity
Under part, the electrode potential of negative and positive two is much larger than anoxic or neutral and alkali condition in light electrolysis system, and its electrochemical corrosion reaction speed is carried out
Obtain faster.The nascent state Fe of light electrolysis corrosion reaction generation2+、Fe3+And its hydrate has stronger absorption-flocculation activity, energy
Occur redox reaction with many components in waste water, the chromophoric group for the organic matter that makes to develop the color in waste water and auxochrome group rupture or
Conversion, reaches decolouration, and the component of waste water is changed to biochemical direction is easy to, and biodegradability is greatly improved.Light electrolysis
The metal ion constantly produced during corrosion reaction can efficiently against anode polarization, metal can continuously and healthily
Generation electrochemical corrosion.
B. primary precipitation：The pond water outlet of iron carbon is promoted to primary clarifier by pump, the feeding lime breast in water inlet, adjusts waste water
PH is to alkalescence, while flocculant PAM is added, mechanical agitation mixing, after flocculation sediment, primary clarifier discharges water to catalysis oxidation
Device；
Contain a large amount of Fe in the pond water outlet of iron carbon2+、Fe3+And its hydrate, the generation precipitation Fe in alkaline environment（OH）2And Fe
（OH）3.Fe in waste water solution（OH）2Colloid is positively charged, and it can be with the electrolysis in some materials and solution of oppositely charged
Heavy poly- effect occurs for matter.The colloid flocculant Fe of generation（OH）3Adsorption capacity be higher than general medicament hydrolyze the Fe arrived（OH）3
Adsorption capacity, coordinates original suspension, colloid, oils etc. and quite a few water soluble organic substance in flocculant PAM, waste water
Can be won over by any means by it, adsorption-condensation and from waste water precipitation and separation.
C. catalysis oxidation：Sulfuric acid is added into catalytic oxidizing equipment, waste water pH value is pulled back into faintly acid, then added
H2O2With catalyst TiO2Into catalytic oxidizing equipment, ultraviolet light waste water is being utilized, while being aerated by force, waste water is being urged
It is about 2h to change the residence time in oxidation unit；
Water outlet after wastewater sedimentation enters in catalytic oxidizing equipment, in TiO2Catalytic environment in, hydrogen peroxide is by ultraviolet light
The organic matter produced in the extremely strong hydroxyl radical free radical of oxidability, waste water can be oxidized, the clearance of final useless Organic substance in water
Improved up to more than 40%, B/C to more than 0.4, be that follow-up biochemical treatment creates advantage.
Waste water pretreatment system will carry out materialization debugging according to biochemical system, be adjusted according to the water quality situation of light electrolysis water outlet
The flow of inlet water and aeration intensity of waste water, according to the situation control lime and the dosage of flocculant of sedimentation basin water outlet, according to light
The water quality situation adjustment oxidant dosage and aeration intensity of catalysis oxidation water outlet.
（2）Waste water homogeneous：
Pretreated waste water and sanitary sewage are passed through in homogeneous regulating reservoir, waste water PH is to alkalescence for feeding lime breast regulation, fills
Divide after mixing homogeneous, be promoted to by pump in anaerobic pond.
（3）Biochemical treatment：
A. Anaerobic Treatment：The waste water that anaerobic pond is divided into after two lattice, built-in circulating pump, homogeneous is lifted through pump, from anaerobic pond base fabric water
Device water outlet, uniform rise fully contacts with suspended sludge, microorganism is carried out anaerobic respiration, retention time of sewage is about 38h；
B. simultaneous oxygen processing：Anaerobic pond overflow is discharged water in oxygen compatibility pool, and oxygen compatibility pool is suitably aerated there is provided micro dissolved oxygen, and is tieed up
Sludge is held in suspension, promotes microorganism to carry out aerobic respiration and anaerobic respiration, retention time of sewage is about 38h；
C. Aerobic Process for Treatment：The form plug-flow of oxygen compatibility pool three is discharged water in Aerobic Pond, and micro-pore aeration is carried out in Aerobic Pond, is maintained aerobic micro-
Biological required dissolved oxygen amount, while in Aerobic Pond in backflow mixed liquor to oxygen compatibility pool, reflux ratio is 50%, carries out denitrification,
Denitrogenation processing is carried out to waste water, retention time of sewage is about 50h；
Independent culturing sludge and the domestication debugged, first carry out anaerobic system is needed in biochemical system, sludge is dirty using city
The digested sludge of water treatment plant, and part cow dung water is added, inner loop system is opened, controls sludge loading to be less than initial stage
0.1kg/（kg·d）.35 DEG C are risen to after water temperature to be raised to 2 DEG C, a week daily using steam in factory.According to microbial cell pair
N, P absorbing rule, supplement such nutrient, while controlling water inlet PH to be 6.5-7.5, and slowly improve influent concentration.By
Four months commissioning tests, anaerobic system COD volumetric loading brings up to 3.0kg/（m3·d）, COD clearances rise to 79.5% with
On, and the control of water outlet volatile acid has reached Expected Results in 500mg/L or so.
After the culturing sludge of anaerobic system and domestication are carried out one month, start a pair microorganism for simultaneous oxygen system and cultivate,
Start bottom microporous aeration device, control dissolved oxygen amount be less than 0.5mg/L, while play a part of stir base sludge, be allowed to be in
Suspension, greatly increases solid, liquid contact cotton knot, is conducive to microculture to tame.
And the microculture one month of oxygen system after, start to cultivate the microorganism of aerobic system, at the beginning of starting
Phase " vexed exposure " 3-7d, stops aeration, after after sludge settling, discharges supernatant, in water inlet aeration.After a period of time, it was observed that
Treatment effect well improves influent concentration afterwards, and it is 2-4mg/L to control dissolved oxygen in aeration tank, in order to the growth of aerobic microbiological
Metabolism, accelerates sludge to be attached on filler, shortens the biofilm cycle.
During whole biochemical system culture domestication, tracking and monitoring water quality situation, according to change adjustment influent load, control
Aeration quantity etc., in the case where treatment effect is good, progressively increases amount of industrial wastewater in design water 5%-10% ratio, makes micro-
Biology progressively adapts to new environment.Above industrial wastewater is that medication chemistry factory waste discharge is urged by light electrolysis-coagulating sedimentation-light
Change the pretreated waste water of step such as oxidation.
（4）Precipitation discharge：
Settlement of sewage is carried out in Aerobic Pond water outlet overflow to second-level settling pond, its supernatant overflow qualified discharge, second-level settling pond
Interior precipitating sludge is lifted by sludge reflux pump, and partial sludge is back to supplement suspended sludge in anaerobic pond, carries out denitrification
Effect, return sludge ratio is 60%, and denitrogenation dephosphorizing operation is carried out to sewage, and excess sludge is delivered in sludge-tank.
（5）Treatment of Sludge：
The sludge that primary precipitation and secondary precipitation are produced enters in sludge-tank, then with being pumped up to gravity sludge condensation, sludge warp
Chamber filter press dehydration, the mud cake outward transport processing of generation are delivered to after concentration volume reduction；The supernatant and filter press on sludge condensation ground
Filtrate is back to homogeneous regulating reservoir, and homogeneous is together mixed with pretreated waste water and sanitary sewage, and biochemical treatment is carried out again.
Further, PPR boring aerations device, the online PH meters of industry, floating ball type liquid level control are provided with the iron carbon pond
Device and electromagnetic flowmeter.
Further, the inclined tube filler of PE materials is placed with the primary clarifier and second-level settling pond.
Further, quartz ultraviolet light lamp, PPR boring aerations device and H are configured with the photocatalytic oxidation device2O2Plus
Medicine device.
Further, two centrifugal self-priming pumps are provided with the homogeneous regulating reservoir, respectively connected sanitary sewer and
Float-type liquid level controller and alkali are additionally provided with the supernatant and filter press filtrate return duct on sludge condensation ground, homogeneous regulating reservoir
Liquid chemicals dosing plant.
Further, the anaerobic pond, anaerobic pond, be provided with combined stuffing in Aerobic Pond.
Beneficial effects of the present invention：
（1）The present invention carries out the steps such as light electrolysis-coagulating sedimentation-photochemical catalytic oxidation before waste water carries out biochemical treatment and located in advance
Reason, wherein, microelectrolysis processing sloughs chromophoric group and auxochrome group in waste water, reaches the purpose of discoloration, and makes the component of waste water
To biochemical direction transformation is easy to, biodegradability is greatly improved, while having carried out metal corruption reaction, the nascent state Fe of generation2+、
Fe3+And its hydrate；Coagulating kinetics make nascent state Fe2+、Fe3+The generation precipitation Fe in alkaline environment（OH）2And Fe
（OH）3, coordinate original suspension, colloid, oils etc. and quite a few water soluble organic substance in flocculant PAM, waste water equal
Can be won over by any means by it, adsorption-condensation and from waste water precipitation and separation；Photochemical catalytic oxidation make the clearance of useless Organic substance in water up to 40% with
On, B/C is improved to more than 0.4, is that follow-up biochemical treatment creates advantage；
（2）Wastewater Pretreatment of the present invention is by most of phenol in medication chemistry factory technique waste water, phenyl amines oxidation operation
Decompose, reduce inhibition of the waste water to the metabolism of microorganism, the microorganism in biochemical system is normally tamed, improving waste water can
Biochemical, effluent quality is unstable；
（3）Waste water pretreatment system in the present invention coordinates biochemical system to be debugged, and adjusts the flow of inlet water and aeration of waste water
Intensity, the dosage of control lime and flocculant and adjustment oxidant dosage and aeration intensity, so as to realize that wastewater treatment is good
Economic benefit, reduce processing cost.
（4）Biochemical system debugging water inlet in the present invention is pretreated waste water, microorganism is progressively adapted to pretreatment
The new environment of waste water formation afterwards, improves the effect of biochemical treatment, stable effluent quality.
Brief description of the drawings
Fig. 1 is the flow chart of the microelectrolysis processing technique of wastewater from chemical industry.
Embodiment
As shown in figure 1, a kind of microelectrolysis processing technique of wastewater from chemical industry, is followed the steps below：
（1）Wastewater Pretreatment：
A. microelectrolysis processing：After each plant effluent is collected, it is pumped up to iron carbon pond, float-type liquid level controller control water inlet
Switch, electromagnetic flowmeter control inflow, while adding the concentrated sulfuric acid adjusts pH value to 3 or so, is implemented by industrial online PH meters
Monitoring, roots blower supply, is aerated by PPR boring aeration devices, carries out iron-carbon micro-electrolysis, and waste water stops in iron carbon pond
Stay time about 2h；
B. primary precipitation：The pond water outlet of iron carbon is promoted to the inclined tube that PE materials are placed with primary clarifier, primary clarifier by pump
Filler, the feeding lime breast in water inlet, waste water PH is to alkalescence for regulation, while flocculant PAM is added, mechanical agitation mixing, through wadding
After retrogradation is formed sediment, primary clarifier discharges water to catalytic oxidizing equipment；
C. catalysis oxidation：Sulfuric acid is added into catalytic oxidizing equipment, waste water pH value faintly acid is pulled back into, then H2O2Dosing is filled
Put and add H2O2With catalyst TiO2Into catalytic oxidizing equipment, entering waste water using quartz ultraviolet light light irradiation ultraviolet light, simultaneously
PPR boring aeration devices are aerated by force, and waste water residence time in catalytic oxidizing equipment is about 2h.
（2）Waste water homogeneous：
Pretreated waste water and sanitary sewage are passed through in homogeneous regulating reservoir, float-type liquid level controller control inflow, alkali
Waste water PH is to alkalescence for the breast regulation of liquid chemicals dosing plant feeding lime, is sufficiently mixed after homogeneous, is promoted to by pump in anaerobic pond；It is described equal
Two centrifugal self-priming pumps are provided with matter regulating reservoir, the supernatant and pressure on sanitary sewer and sludge condensation ground is respectively connected
Filter filtrate return duct.
（3）Biochemical treatment：
A. Anaerobic Treatment：Anaerobic pond, which is divided into, is provided with giving up after combined stuffing, homogeneous in two lattice, built-in circulating pump, anaerobic pond
Water is lifted through pump, from anaerobic pond base fabric hydrophone water outlet, and uniform rise fully contacts with suspended sludge, microorganism is carried out anaerobic and is exhaled
Inhale, retention time of sewage is about 38h；
B. simultaneous oxygen processing：Anaerobic pond overflow is discharged water in oxygen compatibility pool, and combined stuffing is provided with anaerobism, and pond oxygen compatibility pool suitably exposes
Gas maintains sludge to be in suspension there is provided micro dissolved oxygen, promotes microorganism to carry out aerobic respiration and anaerobic respiration, waste water
Residence time is about 38h；
C. Aerobic Process for Treatment：The form plug-flow of oxygen compatibility pool three is discharged water in Aerobic Pond, and combined stuffing, Aerobic Pond are provided with Aerobic Pond
Interior carry out micro-pore aeration, maintains the dissolved oxygen amount needed for aerobic microbiological, while in Aerobic Pond in backflow mixed liquor to oxygen compatibility pool, returning
Stream carries out denitrification than being 50%, carries out denitrogenation processing to waste water, retention time of sewage is about 50h.
（4）Precipitation discharge：
The inclined tube for carrying out being placed with PE materials in Aerobic Pond water outlet overflow to second-level settling pond in settlement of sewage, second-level settling pond is filled out
Precipitating sludge in material, its supernatant overflow qualified discharge, second-level settling pond is lifted by sludge reflux pump, partial sludge backflow
Suspended sludge is supplemented in anaerobic pond, return sludge ratio is 60%, and excess sludge is delivered in sludge-tank.
（5）Treatment of Sludge：
The sludge that primary precipitation and secondary precipitation are produced enters in sludge-tank, then with being pumped up to gravity sludge condensation, sludge warp
Chamber filter press dehydration, the mud cake outward transport processing of generation are delivered to after concentration volume reduction；The supernatant and filter press on sludge condensation ground
Filtrate is back to homogeneous regulating reservoir, and homogeneous is together mixed with pretreated waste water and sanitary sewage, and biochemical treatment is carried out again.
The microelectrolysis processing technique of the wastewater from chemical industry entered biochemical system microculture and continuum micromeehanics debugging, main place
Reason unit produces a desired effect to the clearance of pollutant.
Claims (6)
1. the microelectrolysis processing technique of a kind of wastewater from chemical industry, it is characterised in that follow the steps below：
（1）Wastewater Pretreatment：
A. microelectrolysis processing：By each plant effluent collect after, be pumped up to iron carbon pond, at the same add the concentrated sulfuric acid adjust pH value to
3 or so, roots blower supply carries out iron-carbon micro-electrolysis, waste water residence time in iron carbon pond is about 2h；
B. primary precipitation：The pond water outlet of iron carbon is promoted to primary clarifier by pump, in water inlet feeding lime breast, regulation waste water PH to
Alkalescence, while flocculant PAM is added, mechanical agitation mixing, after flocculation sediment, primary clarifier discharges water to catalysis oxidation dress
Put；
C. catalysis oxidation：Sulfuric acid is added into catalytic oxidizing equipment, waste water pH value is pulled back into faintly acid, H is then added2O2With
Catalyst TiO2Into catalytic oxidizing equipment, ultraviolet light waste water is being utilized, while being aerated by force, waste water is in catalysis oxidation
The residence time is about 2h in device；
（2）Waste water homogeneous：
Pretreated waste water and sanitary sewage are passed through in homogeneous regulating reservoir, waste water PH is to alkalescence for feeding lime breast regulation, fills
Divide after mixing homogeneous, be promoted to by pump in anaerobic pond；
（3）Biochemical treatment：
A. Anaerobic Treatment：The waste water that anaerobic pond is divided into after two lattice, built-in circulating pump, homogeneous is lifted through pump, from anaerobic pond base fabric water
Device water outlet, uniform rise fully contacts with suspended sludge, microorganism is carried out anaerobic respiration, retention time of sewage is about 38h；
B. simultaneous oxygen processing：Anaerobic pond overflow is discharged water in oxygen compatibility pool, and oxygen compatibility pool is suitably aerated there is provided micro dissolved oxygen, and is tieed up
Sludge is held in suspension, promotes microorganism to carry out aerobic respiration and anaerobic respiration, retention time of sewage is about 38h；
C. Aerobic Process for Treatment：The form plug-flow of oxygen compatibility pool three is discharged water in Aerobic Pond, and micro-pore aeration is carried out in Aerobic Pond, is maintained aerobic micro-
Biological required dissolved oxygen amount, while in Aerobic Pond in backflow mixed liquor to oxygen compatibility pool, reflux ratio is 50%, carries out denitrification,
Denitrogenation processing is carried out to waste water, retention time of sewage is about 50h；
（4）Precipitation discharge：
Settlement of sewage is carried out in Aerobic Pond water outlet overflow to second-level settling pond, its supernatant overflow qualified discharge, second-level settling pond
Interior precipitating sludge is lifted by sludge reflux pump, and partial sludge is back to supplement suspended sludge, return sludge ratio in anaerobic pond
For 60%, excess sludge is delivered in sludge-tank；
（5）Treatment of Sludge：
The sludge that primary precipitation and secondary precipitation are produced enters in sludge-tank, then with being pumped up to gravity sludge condensation, sludge warp
Chamber filter press dehydration, the mud cake outward transport processing of generation are delivered to after concentration volume reduction；The supernatant and filter press on sludge condensation ground
Filtrate is back to homogeneous regulating reservoir, and homogeneous is together mixed with pretreated waste water and sanitary sewage, and biochemical treatment is carried out again.
2. the microelectrolysis processing technique of a kind of wastewater from chemical industry according to claim 1, it is characterised in that in the iron carbon pond
It is provided with PPR boring aerations device, the online PH meters of industry, float-type liquid level controller and electromagnetic flowmeter.
3. a kind of microelectrolysis processing technique of wastewater from chemical industry according to claim 1, it is characterised in that the primary precipitation
The inclined tube filler of PE materials is placed with pond and second-level settling pond.
4. a kind of microelectrolysis processing technique of wastewater from chemical industry according to claim 1, it is characterised in that the photocatalytic-oxidation
Makeup is configured with quartz ultraviolet light lamp, PPR boring aerations device and H in putting2O2Chemicals dosing plant.
5. a kind of microelectrolysis processing technique of wastewater from chemical industry according to claim 1, it is characterised in that the homogeneous regulation
Two centrifugal self-priming pumps are provided with pond, the supernatant and press filtration machine filter on sanitary sewer and sludge condensation ground is respectively connected
Float-type liquid level controller and alkali lye chemicals dosing plant are additionally provided with liquid return duct, homogeneous regulating reservoir.
6. a kind of microelectrolysis processing technique of wastewater from chemical industry according to claim 1, it is characterised in that the anaerobic pond,
Combined stuffing is provided with anaerobic pond, Aerobic Pond.
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