CN104671612B - Sequence flow return type sewage treatment method and treatment device - Google Patents
Sequence flow return type sewage treatment method and treatment device Download PDFInfo
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- CN104671612B CN104671612B CN201510087184.4A CN201510087184A CN104671612B CN 104671612 B CN104671612 B CN 104671612B CN 201510087184 A CN201510087184 A CN 201510087184A CN 104671612 B CN104671612 B CN 104671612B
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Abstract
The invention discloses a sequence flow return type sewage treatment method which comprises the following steps: conveying sewage to an anoxic/anaerobic tank; conveying the sewage into a contact oxidation tank and performing aeration oxygenation on the sewage in the contact oxidation tank; conveying the supernatant obtained by precipitating in the contact oxidation tank into an electric flocculation and sedimentation tank; returning and mixing the sewage part subjected to electric flocculation, conveying the other part of sewage subjected to electric flocculation into a membrane tank for performing mud-water separation, and discharging the treated water. According to the treatment device disclosed by the invention, an anoxic/anaerobic tank, a contact oxidation tank, an electric flocculation and sedimentation tank and a membrane tank are separated on a treatment unit tank, wherein the contact oxidation tank is communicated with the electric flocculation and sedimentation tank by virtue of a supernatant conveying pipe; a flocculation solution return pipe is arranged on the electric flocculation and sedimentation tank; and the electric flocculation and sedimentation tank is communicated with the membrane tank. The mutual interference and restriction between electric flocculation and biological treatment can be avoided, and the efficiency can be maximized. The method and device disclosed by the invention are widely applied to treatment of domestic sewage on ships and lands and industrial wastewater.
Description
Technical field
The present invention relates to technical field of sewage, more particularly to the water such as river pool marine ship, marine equipment, city small towns
The processing method of upper and land point source sanitary sewage.The invention further relates to using the sewage-treatment plant of the processing method.
Background technology
Sanitary sewage is sewage produced during human being's production, is the primary pollution source of water body, and it mainly has feces
And wash water.With the increase of the fast-developing and population of social economy, the discharge of sanitary sewage is increasing, it has also become
The serious obstruction that economic development and people's quality of life improve, people are faced with the sternness of resource and the dual hydropenia of water quality and examine
Test.The discharge of the land resident living sewage such as city, villages and small towns directly affects the living environment and degree of water pollution of people；It is interior
The discharge of river lake Sewage from Ships can then cause the deterioration of source quality；The row of marine engineering equipment and Sewage from Ships
Put, have a strong impact on marine environment.These point source formula sanitary sewages have the spy that large in number and widely distributed, widely distributed inconvenience is focused on
Point, the harm caused to environment is more direct, more serious.For this purpose, people just are determined to seek sanitary sewage with unprecedented
The some effective of resource, and the discharge water for limiting and improving sanitary sewage by formulating various international conventioies, discharge standard
Matter is required.
Phosphorus and ammonia nitrogen are one of the important substances for causing source quality to deteriorate.The certain content of generally existing in sanitary sewage
Phosphorus, phosphorus is one of restrictive factor in various composition needed for algae reproduction, phosphorus content height and body eutrophication in water body
Degree has close relationship.Ammonia nitrogen is entered after water body, not only can induce " eutrophication " as biological nutrition material, makes water taste raw meat
It is smelly unpleasant, transparency is reduced, dissolved oxygen is consumed in a large number, and to discharge into water toxin, cause aquatic ecosystem disorderly.Due to phosphorus
With a variety of harm of nitrate pollution, the raising that people are required water quality and the water yield, the corresponding skill purified using deoxidation dephosphorization are added
Art means and measure improve the extensive concern that source quality has increasingly been subject to society.
China sets up more perfect sewage disposal discharge aspect laws and regulations and strict sewage disposal discharge standard.
National project of South-to-North water diversion emphasizes the principle of " with water after water flowing, first environmental protection after first pollution treatment "；Work out and put into effect stricter sewage
Phosphorus nitrogen removes standard, and the ship for not installing sewage treatment unit by regulation must not be navigated by water, berthed into river course, operation.State
Border International Maritime Organization (IMO)（IMD）Formulate《The world prevents Pollution From Ships pact》Middle regulation, offshore production living facilities must be equipped with life
Sewage-treatment plant living, no special situation forbids directly discharging sanitary sewage, the MEPC.159 of IMO to confined waters（55）Resolution
Strict execution discharge standard by force is put into effect, MEPC.227 (64) resolutions increase and propose that the phosphorus nitrogen of harshness removes discharge mark
It is accurate.
At present domestic sewage processing method substantially has:Biochemical treatment, physical chemistry process and electrochemical treatment.Film is given birth to
Thing reactor（MBR）It is the efficient domestic sewage processing method for growing up in the last few years, it is anti-with biology by membrane separation technique
A kind of Biochemistry Reaction System answered technology to combine and formed, its essence is that biodegradation is influenced each other, made jointly with membrance separation
Process, it is converted using microorganism to organism in water degradable organic pollutant, is allowed to generate the two of environmental sound
Carbonoxide and water, while biochemical reactant is retained, with solid-liquid separation rate height, organic pollutant degradation efficiency height, excess sludge
The advantage such as few.Although membrane bioreactor is current relatively advanced efficient sewage water treatment method, but still it is intrinsic to there are some
Deficiency, the digestion degraded for being primarily due to Organic substance in membrane bioreactor depends on oxygenic aeration is carried out to activated sludge, but de-
Denitrification during nitrogen dephosphorization needs anaerobic environment, and aeration effect has very big impact to denitrification, therefore right
It is unsatisfactory in the removing treatment effect of total nitrogen, also due to the presence of oxygenic aeration process, it is impossible to form absolute anaerobic condition,
This is again very unfavorable to releasing phosphorus process, even if using clearance-type aeration method, the removal effect of its phosphorus is also undesirable.Furthermore film is given birth to
Activated sludge in thing reactor energy effectively catching reactor, so as to obtain higher sludge concentration, but this process
Also so that sludge age is long, the reduction of sludge bacteria cytoactive is inevitably caused.Also fouling membrane in membrane bioreactor
It is more scabrous problem, although using backwash in prior art, the method such as gap aeration prolongation fouling membrane time, but not
There is the dispersion free state for changing microgranule, colloidal solid and solute transportation in sewage, it is impossible to preferably prevent fouling membrane.
Patent of invention " the multi-stage biochemical domestic sewage process side that the applicant applied and be authorized on October 7th, 2008
Method and its processing meanss " (patent No. 2008101966589).The invention mainly includes that catalytic oxidation cabinet, settling tank and film are biological
Reaction cabinet, its sewage Jing is multistage to be cleared up repeatedly, and Organic substance obtains more sufficiently degrading, and organic removal rate is high, excess sludge
Amount is few.But in actual use, filter membrane still suffers from easy pollution problem in the invention, and the treatment effeciency of sewage is not high, and denitrogenation
Phosphor-removing effect is unsatisfactory and stable.For the deficiency of the invention, the applicant applies and obtains on November 30th, 2012 again
The patent of invention " continuous cycle type membrane bioreactor " of mandate（The patent No. 2012105020267）, the present invention adopts tubular membrane
As the pass in flow, flow velocity and pipe in retention resolution element, and the pipe of reasonable selection tubular membrane between flow and the amount of appearing
System etc., improves sludge concentration in the crown_interception and cabinet of periosteum group, reduces the pollution probability of periosteum, improves sewage disposal
Efficiency, but Nitrogen/Phosphorus Removal is still unstable.Japanese publication people applied for and obtained the patent of invention of mandate November 13 in 2013
" a kind of sewage water treatment method and its electric flocculation membrane bioreactor "（The patent No.：201310566552.4）, the present invention is in contact
Electric flocculation is additionally arranged on the handling process main line of oxidation, scarce anaerobic precipitation and membrane biological reaction, so as to form biological treatment, electricity wadding
The solidifying, integrated use of membrane separation technique, the introducing of electric flocculation technique by the adsorpting aggregation to pollutant, compression flocculation and
Pollutant and the precipitation separation of water, realize the purification removal effect to water pollutant.Especially electric flocculation is in apparatus for treating sewage system
The flocculation environment of uniqueness is produced in system, makes the pollutant in sewage become coherent condition from free distribution, to a certain degree
It is upper to prevent and inhibit pollutant to adhere to and permeate, pollutant precipitation accumulation on the surface of the film is alleviated, prevent with preferable
Only fouling membrane effect.
This electric flocculation membrane bio-reaction system is strengthened by the superposition of biological treatment, electric flocculation and membrane separation technique
Whole processing system Nitrogen/Phosphorus Removal, and emphasis mitigates fouling membrane by biological treatment and electric flocculation effect.In theory this
The processing system of sample can be improved and then occur after sewage treatment capacity, but actual motion that treatment effect is unstable, discharge the ammonia nitrogen of water
And the fluctuation of the detected value such as total phosphorus is very big.Because this handling process and its actual product are confined to the superposition fortune of multi task process technology
With, fail the dependence between influencing each other between each treatment technology and each handling process and flow process order and its mutual shadow
Sound is analyzed research, so there are some intrinsic some shortcomings：The response system for coexisting with biological treatment in electric flocculation first
In, the extra electric field of electric flocculation can suppress or weaken the growing multiplication of microorganism, affect the metabolism degree of microorganism, make microorganism
There is " poisoning " phenomenon；Accumulation of the electric field to microbial population inhibitory action has also weakened sludge activity and easily occurs old
Change, operating condition is difficult to long-time and maintains.Second, the enhancing of electric current density can improve the flocculation sediment to dirty water pollutant and make
With, but the enhancing of electric current density also can strengthen to microbial flocculation precipitation in sewage, reduce micro organism quantity in sewage,
Degradation dies down, and in symptom is deteriorated, sludge is from well to deterioration transition for sludge operating；When the microbial growth speed of growth is less than
When being flocculated settling velocity, biological treatment efficiency will be lost, and become simple electric flocculation system.Therefore give birth in electric flocculation superposition
Electric field is run in thing processing system wayward, it is difficult to maintain high sludge concentration, cause the stability of processing system poor, hinder
The practice of electric flocculation bio-reaction system.3rd, metal anode produces the gold for electronically forming " tiny flocculation agent " in electric flocculation
Category nitrogen oxides, " flocculant " is flocculated by the adsorpting aggregation to pollutant, compression, and the precipitation separation of pollutant and water,
Colloidal state impurity and suspended impurity coagulative precipitation in sewage are made, realizes removing the purification of pollutant in water body, but electric flocculation is acted on
Excessive " flocculant " is produced while enhancing is acted on pollutant coagulative precipitation, also a large amount of coagulative precipitation microorganisms, make micro-
Biomass and population are reduced, and the reduction of micro organism quantity and population causes microbial degradation miopragia.4th, electricity
The cohesion of " flocculant " also changes the growth of microorganism such as microbial nutrition material, pH condition propagation ring in bio-reaction system
Border.Therefore the negative effect of electric flocculation electric field and excessive electricity " flocculant " to bio-reaction system how is avoided to be high-efficiency sewage
The problem that processing system must be furtherd investigate.
The content of the invention
The technical problem to be solved is to provide a kind of sewage water treatment method, and it had both been avoided that electric flocculation and sewage
The negative effect for interfering and restricting between biological treatment system, and the flocking settling of biological treatment pollutant can be accelerated, make
Electric flocculation and biological treatment realizes maximal efficiency.Another technical problem to be solved of the present invention is to provide one kind and realizes the processing method
Sewage-treatment plant.
In order to solve above-mentioned technical problem, the sequence stream foldback formula sewage water treatment method of the present invention is characterized in that the process side
Method is comprised the following steps：By sewage transport to scarce anaerobism cabinet, Jing after lacking anaerobic treatment, then by sewage transport to catalytic oxidation cabinet simultaneously
Aeration aerating is carried out to the sewage in catalytic oxidation cabinet, aeration aerating stops afterwards for a period of time aeration and precipitates, by catalytic oxidation
Supernatant in cabinet obtained by Jing precipitations is delivered to electric flocculation settling tank；The foul water fraction of Jing electric flocculations is returned to into scarce anaerobism cabinet
Or/and catalytic oxidation cabinet and mix with sewage in scarce anaerobism cabinet or/and catalytic oxidation cabinet, another part sewage of Jing electric flocculations is defeated
Delivering to film cabinet carries out mud-water separation and discharges process water.
Using the sequence stream foldback formula sewage-treatment plant of sewage water treatment method of the present invention, including processor cabinet, the process
Device cabinet separates scarce anaerobism cabinet, catalytic oxidation cabinet, electric flocculation settling tank and film cabinet, and contact oxygen is provided with catalytic oxidation cabinet
Change cabinet aerator and soft-filler, electric flocculation settling tank is provided with positive and negative flocculation electrode, and filter membrane group is arranged in film cabinet, in film cabinet
Film cabinet aerator is inside additionally provided with, the scarce anaerobism cabinet, catalytic oxidation cabinet, electric flocculation settling tank and film cabinet are on sewage disposal path
It is arranged in order from front to back, the scarce anaerobism cabinet is interconnected with catalytic oxidation cabinet, the catalytic oxidation cabinet is defeated by supernatant
Send pipe to be connected with electric flocculation settling tank, between electric flocculation settling tank and scarce anaerobism cabinet or/and catalytic oxidation cabinet wadding is communicated with
Lime set foldback pipe, the electric flocculation settling tank is connected with film cabinet.
After using above-mentioned technical proposal, the invention has the advantages that：
First, the present invention is arranged in order on sewage disposal path and is disposed with scarce anaerobic treatment, catalytic oxidation process, electricity wadding
Retrogradation shallow lake and membrane separation step.Scarce anaerobic treatment is placed in into the front end of waste water processes, anaerobic bio-treated is by complexity
Organic compound be degraded, be converted into simple compound, not only enhance denitrification dephosphorization antibacterial under anaerobic environment profit
Serving as electron acceptor with nitrate nitrogen is carried out after poly- phosphorus precipitation, and the Organic substance anaerobic hydrolysis-acidification in waste water, and biodegradability is obtained
Raising is arrived, beneficial to the biodegradability for playing follow-up aerobic process, whole technique Effec-tive Function has been enable and to be allowed to water outlet excellent
It is good.Simultaneously the Jing aerobic processes again Jing after lacking anaerobic treatment, define anaerobism, aerobic process, are become reconciled using anoxic denitrification effect
Oxygen Nitrification realizes denitrogenation dephosphorizing.Again Jing electric flocculations are precipitated after catalytic oxidation process, are enhanced after biological respinse in sewage
The precipitation separation of the adsorpting aggregation, compression flocculation and pollutant and water of pollutant.
Second, the present invention in biological treatment it is separate with electric flocculation setting and directly do not connect, and electric flocculation be located at give birth to
The rear end of thing process.So the extra electric field of electric flocculation had not both interfered with the metabolism degree of microorganism, will not suppress again and weaken
The growing multiplication of microorganism, has separated the negative effect of the extra electric field to biological treatment system of electric flocculation；Biological treatment system
Its efficient degradation Organic substance, the effect of high-efficient denitrification and dephosphorization can more be played.Electric flocculation again can be according to process object and the need of technique
Freely to select the operational factors such as electric current density and the harmful effect to biological treatment system need not be taken into account, electric flocculation is filled
Its adsorpting aggregation, compression flocculation and the effect of precipitation separation are waved in distribution.Simultaneously preceding bio-degradation reactions alleviate follow-up electricity
Flocculation denitrogenation dephosphorizing burden, and follow-up electric flocculation strengthens the denitrification dephosphorization function of whole processing system, and both form phase
Mutually coordinate, mutually reinforcing, both with Overlay, interfering between the two is avoided again.
3rd, " flocculant " that the present invention is formed posterior electric flocculation is partly returned to preceding biological treatment system
Send, " flocculant " produced by processing system itself enters into bio-reaction system, effectively facilitates and strengthen the wadding of activated sludge
Solidifying settling property, makes process water more easily separate with sludge, accelerates purification of waste water.But also can be according to running situation
Controlledly foldback " flocculant " forward, makes micro organism quantity, population and growth of microorganism propagation environment optimization.Therefore, this
The bright negative effect for not only having blocked electric flocculation external electric field to bio-reaction system, and and biological respinse system can be made by foldback
The flocculating settling characteristics of system are strengthened.
4th, the present invention is made by aggregation compression, the precipitation separation of the biodegradation, flocculating sedimentation and electric flocculation of reinforcing
Most of Organic substance must have been cleared up and solid-liquid separation, so as to give the membrane biological reaction cabinet in rear road in membrane module create one
" clear water " running environment, though making film participate in biochemical reaction, its separating mechanism is occupied an leading position, and the pollution probability of film subtracts significantly
It is few, it is ensured that membrane flux it is steady in a long-term.
Preferably, the part foldback volume of the electric flocculation sewage is sewage volume in catalytic oxidation cabinet（1/4—
1/2）.Aeration aerating time T1 in the catalytic oxidation cabinet, stop aeration time T2 and electric flocculation sewage foldback time T3 it
Compare T1：T2：T3=（5—7）：1：（0.5—1）；Catalytic oxidation cabinet is carried out aeration aerating, stop aeration and precipitation with to film cabinet
Aeration aerating is carried out, stops aeration and precipitated synchronous carrying out.Electric flocculation sewage foldback amount of the present invention can promote and enhancement microbiological
The flocculating sedimentation of response system, and unlikely have a negative impact.Rational aeration, stop the exposure time and both made biodegradation fully, and
There are enough sedimentation times, so as to preferably realize solid-liquid separation.
Description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of structural representation of specific embodiment of sewage-treatment plant of the present invention.
In figure, 1-processor cabinet, 2-scarce anaerobism cabinet, 3-biological respinse cabinet dividing plate, 4-catalytic oxidation cabinet, 5-dirt
Water inlet pipe, 6-flush pipe, 7-exhaustor, 8-oxidation cabinet aeration valve, 9-ajutage, 10-flocculation liquid foldback pipe, 11-
Supernatant delivery pipe, 12-electric T-shaped valve, 13-electric flocculation settling tank, 14-supernatant conveying air valve, 15-pressure fan,
16-flocculation liquid conveying air valve, 17-anti-spark arrester netting, 18-film cabinet aeration valve, 19-film cabinet flush pipe, 20-film cabinet, 21-just
Negative flocculation electrode, 22-overfall, 23-discharge purified water pipe, 24-filter membrane group, 25-disinfector, 26-vacuum pump, 27-film
Bottom of cabinet plate, 28-film cabinet aerator, 29-film cabinet dividing plate, 30-drainage bolt, 31-flocculation sediment cabinet dividing plate, 32-contact oxygen
Change cabinet aerator, 33-soft-filler, 34-precipitate delivery pipe, 35-macerator pump, 36-heater.
Specific embodiment
The waste water processes of the present invention, by taking the sanitary sewage that process includes Heisui River and buck as an example, in the sanitary sewage
Handling process path on, be sequentially provided with scarce anaerobism cabinet 2, catalytic oxidation cabinet 4, electric flocculation settling tank 13 and film cabinet 20.First
Sewage transport is carried out into anaerobic bio-treated to scarce anaerobism cabinet 2, Jing after lacking anaerobic bio-treated, the sewage lacked in anaerobism cabinet 2 enters
Entering to catalytic oxidation cabinet 4 carries out aeration aerating, the aeration aerating time T1=50-70 minute, then stop aeration time T2=8-
12 minutes, the settlement of sewage in catalytic oxidation cabinet is separated, the supernatant in catalytic oxidation cabinet after precipitation is delivered to into electric flocculation
In settling tank 13, the electrode material of the positive and negative flocculation electrode 21 in electric flocculation settling tank 13 is aluminium sheet, between positive/negative plate between
Away from for 4mm, running voltage 5v between positive and negative electrode, operating current is 1A.The foul water fraction of Jing electric flocculations is returned to into scarce anaerobism
Part foldback is carried out in cabinet 2, or in catalytic oxidation cabinet 4, or while to scarce anaerobism cabinet and catalytic oxidation cabinet part
Foldback；The foldback time T3=6-10 minute.In electric flocculation settling tank part of contaminated water forward foldback volume be catalytic oxidation cabinet
The 1/3 of middle sewage volume, too high foldback amount can affect sewage treating efficiency, and foldback amount is too low is difficult to reach enhanced biological
Flocculation sediment effect in course of reaction.Therefore, its foldback amount should be according to process sewage situation and its preferred electricity wadding of handling process
Solidifying sewage foldback amount volume is catalytic oxidation cabinet sewage volume（1/4—1/2）.The aeration aerating time in catalytic oxidation cabinet
T1, the ratio prioritizing selection stopped between aeration time T2 and electric flocculation sewage foldback time T3 are T1：T2：T3=（5—7）：1：
（0.5—1）.
In the processing method of the present invention, sewage disposal lacks the life of anaerobism step, catalytic oxidation step, electric flocculation step and film
Thing reaction sequential arrangement, the scarce anaerobism of biological treatment and catalytic oxidation mutually separate with electric flocculation and directly do not connect, electricity
Foul water fraction in flocculation foldback forward, to strengthen biological respinse in flocculating sedimentation effect, so both separated electric flocculation
Negative effect of the extra electric field to biological treatment system, adsorpting aggregation, compression flocculation and the separation that electric flocculation is given full play to again is heavy
Shallow lake acts on.
Sequence stream foldback formula sewage-treatment plant as shown in Figure 1, processor cabinet 1 is heavy by biological respinse cabinet dividing plate 3, flocculation
Drop cabinet dividing plate 31 and film cabinet dividing plate 29 are divided into successively from front to back scarce anaerobism cabinet 2, catalytic oxidation cabinet 4, electric flocculation settling tank 13
With film cabinet 20.Wherein flocculating sedimentation cabinet dividing plate 31 is totally enclosed diaphragm structure, and processor cabinet 1 is separated into two relatively by it
The independent cabinet space of closing.The cabinet space of this two closings both can be an overall structure（Structure as shown in Figure 1）, also may be used
To be divided into two independent each self-enclosed cabinet spaces, the cabinet body structure of this split has more preferable Installation Flexibility, can
To be installed in different spaces and different cabins.
Scarce anaerobism cabinet 2 and catalytic oxidation cabinet 4 are provided with the previous closing cabinet of processor cabinet 1, it is scarce for separating
Gap is left in the two ends of the biological respinse cabinet dividing plate 3 of anaerobism cabinet 2 and catalytic oxidation cabinet 4 with cabinet top board and base plate, lacks anaerobism cabinet 2
It is interconnected by the clearance channel with catalytic oxidation cabinet 4.Electric flocculation is provided with the latter closing cabinet of processor cabinet 1
The film cabinet dividing plate 29 of settling tank 13 and film cabinet 20, leaves gap, electric flocculation settling tank between the lower end of film cabinet dividing plate 29 and cabinet base plate
13 are connected with film cabinet 20 by dividing plate lower gap passage.Film bottom of cabinet plate is obliquely provided with the lower gap passage
27, film bottom of cabinet plate 27 it is high-end in film cabinet 20, the low side of film bottom of cabinet plate 27 extends the cabinet base plate of electric flocculation settling tank 13.
Precipitate in the energy guiding film of inclined film bottom of cabinet plate 27 cabinet 20 is slid into electric flocculation settling tank 13, so that these are precipitated
Thing is returned to handling process front end and is circulated process.
Heater 36 is provided with the bottom position for lacking anaerobism cabinet 2, the heater 36 is electric heater, because temperature is to anaerobism
The impact of digestion is proportionate, and the reaction rate of thermophilic digestion is higher than mesophilic digestion reaction rate, and sludge activity is strong.In contact oxygen
Change and soft-filler 33 and catalytic oxidation cabinet aerator 32 are provided with cabinet 4, soft-filler 33 is conventional using vinylon, nylon yarn etc.
Material.One group or some groups positive and negative flocculation electroplax 21 is provided with electric flocculation settling tank 13, positive and negative flocculation electroplax 21 passes through power supply
Line is electrically connected to each other with electric flocculation power supply, the equal aluminium of two electrode materials of positive and negative flocculation electroplax 21, sets in electric flocculation settling tank 13
High, medium and low position water-line target or scale are equipped with, with the water level in control process device, so as to ensure its normal work.In film cabinet 20
Filter membrane group 24 and film cabinet aerator 28 are provided with, the extraction water out of the filter membrane group 24 is connected with vacuum pump 26, vacuum pump 26
Outlet be sequentially communicated disinfector 25 and discharge purified water pipe 23 outward.
Flocculation liquid foldback pipe 10 is communicated between electric flocculation settling tank 13 and scarce anaerobism cabinet 2, flocculate liquid foldback pipe 10
Water inlet end is stretched into below the minimum liquid level of electric flocculation settling tank 13, and the port of the water inlet end is adjacent to bottom of cabinet, so can be by
Sewage with " flocculant " is returned in anaerobism cabinet, the precipitation pollutant of cabinet can be returned in anaerobism cabinet again and be dropped again
Solution process.The water outlet port of flocculation liquid foldback pipe 10 is located on cabinet top board, i.e. the port is always more than cabinet highest liquid.
Flocculation liquid foldback pipe 10 conveys air valve 16 and electric T-shaped valve 12 with the phase of pressure fan 15 and connects by flocculation liquid, to provide foldback
Power.
Supernatant delivery pipe 11, supernatant delivery pipe 11 are communicated between catalytic oxidation cabinet 4 and electric flocculation settling tank 13
Water inlet end extend in the sewage of catalytic oxidation cabinet 4, the water side of supernatant delivery pipe 11 is then located at electric flocculation settling tank cabinet
Body ceiling location, so that the supernatant in catalytic oxidation cabinet is delivered in electric flocculation settling tank.Supernatant delivery pipe 11 passes through
Supernatant conveying air valve 14 and electric T-shaped valve 12 also with the phase of pressure fan 15 and connect.Supernatant delivery pipe 11 can also be located at wadding
Supernatant one-way flow hole or flowing through hole on solidifying settling tank dividing plate 31.
Sewage input pipe 5 is communicated in the cabinet top of scarce anaerobism cabinet 2, is respectively communicated with the cabinet top of catalytic oxidation cabinet 4 and film cabinet 20
The cabinet top for having flush pipe 6 and the catalytic oxidation cabinet 4 of film cabinet flush pipe 19. and film cabinet 20 is also led to anti-Mars by exhaustor 7
The air vent of net 17.Overfall 22. is housed on the cabinet wall of film cabinet
The bottom of cabinet of electric flocculation settling tank 13 and catalytic oxidation cabinet 4 is connected to macerator pump 35 by control valve, macerator pump 35
Outlet is connected to lack the end wall medium position of anaerobism cabinet 2, is dropped again so that the size-reduced pump 35 of precipitate is delivered to into scarce anaerobism cabinet
Solution.Drainage bolt 30. is also equipped with the base plate of processor cabinet 1
The water side of above-mentioned flocculation liquid foldback pipe 10 lacks the cabinet top position of anaerobism cabinet 2 except being located at, and can also be positioned at contact
The cabinet top of oxidation cabinet 4, or the water outlet port for being respectively equipped with two and connecing in the cabinet top for lacking anaerobism cabinet 2 and catalytic oxidation cabinet 4.
Claims (9)
1. a kind of sequence stream foldback formula sewage water treatment method, is characterized in that the processing method is comprised the following steps：By sewage transport extremely
Scarce anaerobism cabinet, Jing after lacking anaerobic treatment, then sewage transport is exposed to catalytic oxidation cabinet and to the sewage in catalytic oxidation cabinet
Gas oxygenation, aeration aerating stops afterwards for a period of time aeration and precipitates, by the supernatant conveying obtained by Jing precipitations in catalytic oxidation cabinet
To electric flocculation settling tank；By the foul water fraction of Jing electric flocculations be returned to scarce anaerobism cabinet or/and catalytic oxidation cabinet and with scarce anaerobism cabinet
Or/and sewage mixes in catalytic oxidation cabinet, another part sewage transport of Jing electric flocculations carries out mud-water separation and discharges to film cabinet
Process water；
Aeration aerating time T1, the ratio of stopping aeration time T2 and electric flocculation sewage foldback time T3 in the catalytic oxidation cabinet
T1：T2：T3=（5-7）：1：（0.5-1）；Aeration aerating is carried out to catalytic oxidation cabinet, stops aeration and precipitated and film cabinet is carried out
Aeration aerating, stopping aeration simultaneously precipitate synchronous carrying out.
2. sequence stream foldback formula sewage water treatment method according to claim 1, it is characterised in that：The sewage of the Jing electric flocculations
Part foldback volume is sewage volume in catalytic oxidation cabinet（1/4-1/2）.
3. sequence stream foldback formula sewage water treatment method according to claim 1 and 2, it is characterised in that：The Jing electric flocculations
Foul water fraction is returned in scarce anaerobism cabinet.
4. a kind of sequence stream foldback formula sewage-treatment plant of sewage water treatment method described in employing claim 1, including processor cabinet
Body（1）, the processor cabinet（1）Separation has scarce anaerobism cabinet（2）, catalytic oxidation cabinet（4）, electric flocculation settling tank（13）With film cabinet
（20）, in catalytic oxidation cabinet（4）Inside it is provided with catalytic oxidation cabinet aerator（32）And soft-filler（33）, electric flocculation settling tank
（13）It is provided with positive and negative flocculation electrode（21）, filter membrane group（24）It is arranged at film cabinet（20）It is interior, in film cabinet（20）Inside it is additionally provided with film cabinet
Aerator（28）, it is characterised in that:The scarce anaerobism cabinet（2）, catalytic oxidation cabinet（4）, electric flocculation settling tank（13）With film cabinet
（20）It is arranged in order from front to back on sewage disposal path, the scarce anaerobism cabinet（2）With catalytic oxidation cabinet（4）It is interconnected,
The catalytic oxidation cabinet（4）By supernatant delivery pipe（11）With electric flocculation settling tank（13）It is connected, in electric flocculation settling tank
（13）With scarce anaerobism cabinet（2）Or/and catalytic oxidation cabinet（4）Between be communicated with flocculation liquid foldback pipe（10）, the electric flocculation precipitation
Cabinet（13）With film cabinet（20）It is connected；
The electric flocculation settling tank（13）With film cabinet（20）In being arranged at a closing cabinet, the electric flocculation settling tank（13）With film cabinet
（20）By film cabinet dividing plate（29）Lower gap is connected；In film cabinet dividing plate（29）Lower gap in be obliquely provided with film cabinet
Base plate（27）；The scarce anaerobism cabinet（2）Middle setting having heaters（36）.
5. sequence stream foldback formula sewage-treatment plant according to claim 4, it is characterised in that：The electric flocculation settling tank
（13）With scarce anaerobism cabinet（2）Between be communicated with flocculation liquid foldback pipe（10）.
6. sequence stream foldback formula sewage-treatment plant according to claim 4, it is characterised in that：The electric flocculation settling tank
（13）With catalytic oxidation cabinet（4）Between be communicated with flocculation liquid foldback pipe（10）.
7. sequence stream foldback formula sewage-treatment plant according to claim 4, it is characterised in that：The electric flocculation settling tank
（13）By the liquid foldback pipe that flocculates（10）With scarce anaerobism cabinet（2）With catalytic oxidation cabinet（4）Connection.
8. the sequence stream foldback formula sewage-treatment plant according to claim 5,6 or 7, it is characterised in that：The flocculation liquid is returned
Send pipe（10）Water inlet end stretch into electric flocculation settling tank（13）Minimum liquid level below；Flocculation liquid foldback pipe（10）Water side position
In scarce anaerobism cabinet（2）Or catalytic oxidation cabinet（4）It is more than highest liquid level.
9. sequence stream foldback formula sewage-treatment plant according to claim 4, it is characterised in that：The scarce anaerobism cabinet（2）With
Catalytic oxidation cabinet（4）In being arranged at a closing cabinet, the scarce anaerobism cabinet（2）With catalytic oxidation cabinet（4）By biological respinse cabinet every
Plate（3）Gap between two ends are connected.
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| CN203545847U (en) * | 2013-11-13 | 2014-04-16 | 东台市东方船舶装配有限公司 | Electro-coagulation membrane bioreactor |
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