CN110217947A - A kind of dyeing and printing sewage classifying and processing process - Google Patents
A kind of dyeing and printing sewage classifying and processing process Download PDFInfo
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- CN110217947A CN110217947A CN201910598162.2A CN201910598162A CN110217947A CN 110217947 A CN110217947 A CN 110217947A CN 201910598162 A CN201910598162 A CN 201910598162A CN 110217947 A CN110217947 A CN 110217947A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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Abstract
The invention discloses technique at a kind of dyeing and printing sewage classification processing, dyeing and printing sewage is divided into chemical fibre class sewage and cotton class composite wastewater two is big, and chemical fibre class sewage is divided into alkali reduced sewage and general two group of sewage of chemical fibre, after handled；By the way that Alkali reduction filtrate to be incorporated in the general filtrate of chemical fibre, subsequent physicochemical techniques are carried out after conciliation, can effectively save medicament, to reduce operating cost；By the way that cotton class composite wastewater is done alkaline process processing, using the alkali source demodulated as combined sewage III, so as to save the base amount of chemical fibre class sewage；Cotton desizing sewage, cotton stamp sewage and cotton dyeing sewage are merged into a kind of sewage i.e. cotton class composite wastewater, by the mixing of three kinds of sewage, the concentration for the pollutant that can be averaged each other reduces processing difficulty；Construction area is reduced simultaneously；And by can centralized control cotton class composite wastewater pH value, in next step mix with combined sewage III creation prerequisite.
Description
Technical field
The invention belongs to technical field of sewage, refer in particular to a kind of dyeing and printing sewage classifying and processing process.
Background technique
In traditional dyeing and printing sewage treatment process, only Alkali reduction water and other sewage are separated, Alkali reduction water pre-processes
After be incorporated in other sewage, this kind of technique materials cost is high, and effect is general.Have a disadvantage in that: cotton class sewage is suitble to alkaline process
Processing (is discharged PH > 7.0) after reacting；And common chemical fibre class sewage is suitble to acid process because removing antimony, the requirement except TA
Processing (i.e. reaction water outlet PH < 4.0).The applicable medicament of two kinds of technique, technology controlling and process point are different, if not separated, are blended in
Materializing strategy is done together, can make both chemical fibre class sewage and cotton class sewage that the purpose of nearest materializing strategy, and medicine be not achieved
Agent waste, increases operating cost.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of stabilization and effect is preferably printed and dyed dirt
Water classifying and processing process.
To achieve the above object, the present invention provides the following technical scheme that technique at a kind of dyeing and printing sewage classification processing, first
Dyeing and printing sewage is divided into chemical fibre class sewage and cotton class composite wastewater two is big, and chemical fibre class sewage is divided into alkali reduced sewage and chemical fibre
Two group of general sewage, then handled；Processing step is as follows:
A. alkali reduced sewage is first passed through grille well I to handle through acid out again, reinjects general waste water after obtaining Alkali reduction filtrate
In conditioning tank；
By the general sewage of chemical fibre by after grille well II after the general filtrate of chemical fibre, reinject in general wastewater equalization pond；
By dyeing and printing sewage by after grille well III, then after materializing strategy cotton class filtrate is spare；
B. acid and Polyferric Sulfate will be added in the general wastewater equalization pond for being marked with Alkali reduction filtrate and the general filtrate of chemical fibre in step a
Be mediated, after combined sewage I；
C. by the combined sewage I obtained through step b inject air floatation machine I, after obtain combined sewage II；
D. the obtained combined sewage II of the rapid c of progress and the cotton class filtrate obtained through step a are injected into air floatation machine II, after must mix
Close sewage III；
E. by the combined sewage III obtained through step d injection efficient anaerobic tank processing, after combined sewage IV；
F. by the combined sewage IV obtained through step e injection anoxic pond processing, after combined sewage V；
G. by the combined sewage V obtained through step f injection high-efficiency aerobic pond processing, after combined sewage VI.
Wherein air floatation machine I is used for the TA gone in combined sewage I, drop antimony, the effect for reducing COD and oil removing；Air floatation machine II
Readjustment alkali can be played, trivalent Fe ion remaining in water removal is removed, suspended matter is reduced, further removes the effect of COD.
The present invention is further arranged to: after alkali reduced sewage passes through grille well I in the step a, and passing through decrement water
Conditioning tank is adjusted, and using acid precipitation reaction bucket acid out, finally obtains Alkali reduction filtrate by white clay squeezer；In the step a
After dyeing and printing sewage passes through grille well III, and pass through cotton class sewage conditioning tank and adjust, is reacted using cotton class sewage reaction tank, finally
Cotton class filtrate is precipitated to obtain through cotton class detention tank.Wherein cotton class sewage does alkaline process, and medicament uses ferrous sulfate and acid, leads to
Technology controlling and process is crossed to control the PH of cotton class filtrate in 9-10.
The present invention is further arranged to: the ratio of Alkali reduction filtrate and the general filtrate of chemical fibre is 3:42 in the step b.
The present invention is further arranged to: the cotton class composite wastewater in the step a is by cotton desizing sewage, cotton stamp sewage
And cotton dyeing sewage composition.And the ratio of cotton desizing sewage, cotton stamp sewage and cotton dyeing sewage is 5:7:8.
The present invention is further arranged to: the combined sewage VI obtained after step g processing is when needed by ultrafiltration
Chi Houzai produces pond through ultrafiltration and obtains filtrate I, and filtrate I can drain into workshop primary reuse whenever necessary；The filtrate I is through RO
Filtrate II is obtained after system, filtrate II produces pond heel row to workshop depth reuse by RO again when needed.
The present invention is further arranged to: the filtrate II obtains filtrate III behind RO concentrated water pond when not needed；Filtrate
III can be immediately discharged to wait outlet in outlet pond, most can also drain into again outlet after demodulating sedimentation basin afterwards again through Fenton oxidation pond
Outlet is waited in pond.
The present invention is further arranged to: the combined sewage VI obtained after step g processing is when not needed through demodulating sedimentation basin
It is drained into outlet pond again afterwards and waits outlet.
The present invention is further arranged to: the efficient anaerobic tank in step e is made of anaerobic pond and anaerobic precipitation pond, the warp
The combined sewage III that step d is obtained is first through anaerobic pond, and by anaerobic precipitation pond, obtained liquid is back in anaerobic pond again through more
Combined sewage IV is obtained after secondary circulation.HRT >=48h of the anaerobic pond selects continuous ring type reaction tank, and mixed liquor is in anaerobism
It is continuously recycled in pond with a closure channel, the substance using a kind of agitating device with direction controlling, into anaerobic pond
Horizontal velocity is transmitted, so that the liquid being stirred recycles in closed type channel.Sludge settling in order to prevent, it is necessary to assure in ditch
Enough flow velocitys (mean flow rate is greater than 0.3m/s)；Since residence time is long in pond for sewage, need to have in pond larger
Circular flow (for inflow several times to tens times).
The present invention is further arranged to: the high-efficiency aerobic pond in the step g is made of aerobic tank and aerobic sedimentation tank,
The combined sewage V that the step f is obtained first passes through aerobic tank, after by aerobic sedimentation tank；The liquid obtained through aerobic tank returns
It flow in the anoxic pond of step e and flow to aerobic sedimentation tank again after repeatedly recycling；The liquid that the aerobic sedimentation tank obtains point
Combined sewage VI is obtained after repeatedly recycling in the anoxic pond not being back in anaerobic pond and the step f in step e.
The present invention is further arranged to: the technique further includes the treatment process to river water, and the river water handles work
Skill is related to grille well IV, river water conditioning tank, inclined-tube sedimentation tank, valveless filtering pool, river water recoil pond, back-flushing flotation tank and river water
Clear water reserviors；The river water first through grille well IV, by river water conditioning tank, then flow to valveless filtering pool after inclined-tube sedimentation tank；Through
The river water part of valveless filtering pool filtering is flowed directly to river water clear water reserviors；Another part first recoils pond through river water, then through back-flushing
River water clear water reserviors are flow to after flotation tank.Water energy in river water clear water reserviors is directly used in workshop use.
The grid slag obtained through the grille well I, grille well II, grille well III, grille well IV transports outward burning.
The mud cake outward transport processing obtained through the white clay squeezer.
The dross that the air floatation machine I generates drains into acid sludge concentration basin, then drains into pressure mud computer room.
It is heavy that precipitating sludge, the aerobic sedimentation tank of dross, the generation of anaerobic precipitation pond that the air floatation machine II generates generate
Shallow lake sludge, the precipitating sludge for demodulating sedimentation basin generation, the precipitating sludge of cotton class detention tank generation, inclined-tube sedimentation tank generate
The dross that precipitating sludge and back-flushing flotation tank generate drains into alkaline sludge concentration basin, then drains into pressure mud computer room.And press mud
The mud cake that computer room generates is outward transport processing.
The present invention is due to using above technical scheme, with significant technical effect:
1. Alkali reduction filtrate is incorporated in the general filtrate of chemical fibre, subsequent physicochemical techniques are carried out after conciliation, can effectively save medicine
Agent, to reduce operating cost.
2. by the way that cotton class composite wastewater is done alkaline process processing, using the alkali source demodulated as combined sewage III, so as to
Save the base amount of chemical fibre class sewage.
3. cotton desizing sewage, cotton stamp sewage and cotton dyeing sewage are merged into a kind of sewage i.e. cotton class composite wastewater, lead to
The mixing of three kinds of sewage is crossed, the concentration for the pollutant that can be averaged each other reduces processing difficulty；Processing difficulty is reduced, simultaneously
Reduce construction area；And by can centralized control cotton class composite wastewater pH value, in next step mixed with combined sewage III
Create prerequisite.
4. the characteristics of passing through anaerobic pond plug-flow and closed circulation is conducive to overcome short stream, improves buffer capacity, in a short time
(such as one circulation) is in plug-flow state, and in the long term (such as multiple circulation) in admixture, and the combination of the two makes into flowing to
A circulation is undergone less and prevents short stream substantially.
5. anaerobic pond has independent anaerobic precipitation pond, independent anaerobism reflux cycle is provided and is stopped with traditional anaerobic technique
The time stayed is longer, and anaerobism is more efficient more thoroughly, using functions such as anaerobism open loop, chain rupture, ammonifications, makes aniline, total nitrogen, coloration
And COD is effectively addressed, and low energy consumption compared to aerobic for anaerobism energy consumption, has saved operating cost.And anaerobism because anaerobism it is high-efficient
And thoroughly, to save aerobic oxygen demand, and then biochemical aerobic energy consumption is saved.
6. the setting in Fenton oxidation pond can ensure the sewage stably reaching standard of outlet, prepare to mention mark for industrial area.
Detailed description of the invention
Fig. 1 is the process flow chart of the embodiment of the present invention；
Label and corresponding component names in attached drawing: the general wastewater equalization pond of 1- grille well I, 2-, 3- grille well II, 4- lattice
Grid well III, 5- air floatation machine I, 6- air floatation machine II, 7- anoxic pond, 8- decrement water conditioning tank, 9- acid precipitation reaction bucket, the squeezing of 10- white clay
Machine, 11- cotton class sewage conditioning tank, 12- cotton class sewage reaction tank, 13- cotton class detention tank, 14- ultrafiltration pond, 15-RO system,
16-RO production pond, 17-RO concentrated water pond, 18- outlet pond, 19- Fenton oxidation pond, 20- demodulate sedimentation basin, 21- anaerobic pond, 22- and detest
Oxygen precipitation pond, 23- aerobic tank, 24- aerobic sedimentation tank, 25- grille well IV, 26- river water conditioning tank, 27- inclined-tube sedimentation tank, 28-
Valveless filtering pool, 29- river water recoil pond, 30- back-flushing flotation tank, 31- river water clear water reserviors, 32- ultrafiltration produces pond, 33- presses mud
Computer room, 34- acid sludge concentration basin, 35- alkaline sludge concentration basin.
Specific embodiment
The embodiment of the present invention is described further referring to Fig.1.
Technique at a kind of dyeing and printing sewage classification processing, is first divided into chemical fibre class sewage and cotton class composite wastewater two for dyeing and printing sewage
Greatly, and by chemical fibre class sewage it is divided into alkali reduced sewage and general two group of sewage of chemical fibre, then is handled；Processing step is as follows:
A. alkali reduced sewage is first passed through into grille well I 1 again through acidic treatment, reinjects general waste water after obtaining Alkali reduction filtrate
In conditioning tank 2；
By the general sewage of chemical fibre by after grille well II 3 after the general filtrate of chemical fibre, reinject general wastewater equalization pond 2
In；
By dyeing and printing sewage by after grille well III 4, then after materializing strategy cotton class filtrate is spare；
B. it will be marked with Alkali reduction filtrate in step a and addition in the general wastewater equalization pond 2 of the general filtrate of chemical fibre is sour and poly-
Iron is mediated, after combined sewage I, the pH value of combined sewage I is 4 or so；
C. by the combined sewage I obtained through step b inject air floatation machine I 5, after obtain combined sewage II；
D. the obtained combined sewage II of the rapid c of progress and the cotton class filtrate obtained through step a are injected into air floatation machine II 6, after
Combined sewage III；
E. by the combined sewage III obtained through step d injection efficient anaerobic tank processing, after combined sewage IV；
F. by the combined sewage IV obtained through step e injection anoxic pond 7 handle, after combined sewage V；
G. by the combined sewage V obtained through step f injection high-efficiency aerobic pond processing, after combined sewage VI.
After alkali reduced sewage passes through grille well I 1 in the step a, and passes through decrement water conditioning tank 8 and adjust, using
9 acid out of acid precipitation reaction bucket, finally obtains Alkali reduction filtrate by white clay squeezer 10, and alkali reduced sewage passes through at traditional acid out
The PH of reason, obtained Alkali reduction filtrate is controlled in 3.5-4.0；Since most cases contain preshrunk sewage in the general sewage of chemical fibre,
Contain TA and antimony in the sewage, weak acid technique need to be done, it is general to use acid and bodied ferric sulfate as materialization medicament, under normal circumstances
The Polyferric Sulfate dosage of a certain amount of general sewage of chemical fibre is 2 × 10-3, 98% sulfuric acid dosage is 1.3 × 10-3.By the way that acid out is obtained
Alkali reduction filtrate be incorporated in general chemical fibre sewage, can effectively save medicament, (be accounted for according to real data with Alkali reduction filtrate
6% calculates), I Polyferric Sulfate dosage of combined sewage is 1.4 × 10-3, 30% is saved, 98% sulfuric acid dosage is 0.4 × 10-3, save
70%, thus so effective that reduce operating cost.
After dyeing and printing sewage passes through grille well III 4 in the step a, and passes through cotton class sewage conditioning tank 11 and adjust, then pass through
It crosses cotton class sewage reaction tank 12 sufficiently to react, most precipitates to obtain cotton class filtrate through cotton class detention tank 13 afterwards.Wherein cotton class sewage
Cotton class composite wastewater in conditioning tank 11 does alkaline process adjusting, and medicament uses ferrous sulfate and acid, by technology controlling and process by cotton
The PH of class filtrate is controlled in 9-10.
A certain amount of combined sewage II (PH=4 or so) readjustment alkali needs the dosage of 30% alkali to PH >=7 under normal circumstances
It is 2.2 × 10-3；And combined sewage II (PH=4 or so) is mixed with cotton class filtrate (PH=9-10), readjustment alkali to PH >=7, symbol
It closes and enters biochemical optimum condition, according to real data (chemical fibre class sewage 76%, cotton class composite wastewater 24%), mixed in this technique
30% base amount for closing sewage II is 1.5 × 10-3, save base amount 32%.
Cotton class composite wastewater in the step a is made of cotton desizing sewage, cotton stamp sewage and cotton dyeing sewage.?
Cotton desizing sewage accounts for 25% in cotton class composite wastewater, and cotton stamp sewage accounts for 35%, and cotton dyeing sewage accounts for 40%.Due to
Cotton desizing COD of sewage is high (15000mg/L or so), and materialization mud amount is big, it is desirable that pool surface product load value is small, i.e. materialization
Chi great increases construction cost；And sewage physicochemical water outlet band mud, than more serious, practical materialization effect is undesirable；
Water is small under normal conditions for cotton stamp sewage, COD medium (2000-3000mg/L), but TN, NH3- N is higher
(900mg/L or so), independent materializing strategy, COD, TN and NH3The removal rate of-N is not high, if being built into techniques such as strippings
This height, operating cost are also relatively high, and side product sodium chloride etc. needs to handle, economical rationality inadequate for dyeing；
Cotton dyeing COD of sewage is lower, and COD constitutes more stable.
By by cotton desizing sewage in cotton class composite wastewater account for 25%, cotton stamp sewage account for 35% and cotton dyeing sewage account for
40% carries out the comprehensive physicochemical techniques processing of unified ferrous sulfate+acid again with after.It is mixed by three kinds of sewage, so as to each other
Be averaged the concentration of pollutant, according to practical data, the pollutant concentration of cotton class composite wastewater are as follows: COD about 5000-5500mg/
L, TN, NH3- N about 270mg/L or so, to reduce processing difficulty；And increase materialization pool surface load value, to reduce
Area is built, and materialization water outlet band mud phenomenon is also effectively improved；And by can centralized control cotton class composite wastewater PH
Value creates prerequisite to mix in next step with combined sewage III.
Due to being difficult preshrunk water to separate in the general sewage of chemical fibre, and contain the dirts such as TA, antimony and greasy dirt in shrinking in advance
Contaminate object；And in actual production, alkali reduced sewage acid out inevitably will appear acid not in place, and acid out white clay is mixed into alkali and subtracts
Phenomena such as measuring in filtrate, according at entering in Alkali reduction filtrate containing TA, antimony；Fabric oil removing in chemical fibre class sewage, forming machine remove simultaneously
The reasons such as oil contain amount of grease, and grease can have an impact biochemical aerobic amount；The general sewage acidity operation of chemical fibre simultaneously, object
Change pollutant to be easy to float；TA in combined sewage I can be effectively removed to which air floatation machine I 5 be arranged, drop antimony reduces COD and oil removing
Deng effect.
And the PH to guarantee combined sewage III, the combined sewage II obtained through air floatation machine I 5 need to be adjusted back by cotton class filtrate
Alkali, meeting combined sewage generates a large amount of floccule (prime cost is iron hydroxide) during readjustment alkali, which enters
Larger to biochemical precipitating sludge destructiveness in biochemical system, be mainly shown as: sludge solution wadding, bio-chemical effluent are muddy, biochemistry removes
Rate reduction etc.；Floccule can be effectively removed by the way that air floatation machine II 6 is arranged.It, can be into since iron hydroxide plays the role of removing COD
One step reduces by III COD of combined sewage.Simultaneously because it is so inevitable that contain more suspended matter in cotton class composite wastewater, pass through air bearing
Machine II 6 can further remove suspended impurity.
The combined sewage VI obtained after step g processing produces pond through ultrafiltration again behind ultrafiltration pond 14 when needed
32 obtain filtrate I；The filtrate I obtains filtrate II after RO system 15, and filtrate II produces pond 16 by RO again when needed
Heel row is to workshop depth reuse.
The filtrate II obtains filtrate III behind RO concentrated water pond 17 when not needed；Filtrate III can be immediately discharged to outlet pond
Outlet is waited in 18, can also most be drained into again after demodulating sedimentation basin 20 afterwards in outlet pond 18 outside waiting again through Fenton oxidation pond 19
Row.
The combined sewage VI obtained after step g processing drains into outlet pond 18 after demodulating sedimentation basin 20 again when not needed
Wait outlet.
Efficient anaerobic tank in step e is made of anaerobic pond 21 and anaerobic precipitation pond 22, the mixing obtained through step d
Sewage III is first through anaerobic pond 21, and by anaerobic precipitation pond 22, obtained liquid is back in anaerobic pond 21 again after repeatedly recycling
Obtain combined sewage IV.HRT >=48h of the anaerobic pond 21 selects continuous ring type reaction tank, and mixed liquor is in anaerobic pond 21
It is continuously recycled with a closure channel, using a kind of agitating device with direction controlling, the substance into anaerobic pond 21 is passed
Horizontal velocity is passed, so that the liquid being stirred recycles in closed type channel.Sludge settling in order to prevent, it is necessary to assure foot in ditch
Enough flow velocitys (mean flow rate is greater than 0.3m/s)；Since residence time is long in pond for sewage, need to have in pond biggish
Circular flow (for inflow several times to tens times).
High-efficiency aerobic pond in the step g is made of aerobic tank 23 and aerobic sedimentation tank 24, and the step f is obtained
Combined sewage V first pass through aerobic tank 23, after by aerobic sedimentation tank 24；The liquid reflux obtained through aerobic tank 23 is to step e
Anoxic pond 7 in through repeatedly recycle after flow to aerobic sedimentation tank 24 again；The liquid that the aerobic sedimentation tank 24 obtains returns respectively
Combined sewage VI is obtained after repeatedly recycling in the anoxic pond 7 in anaerobic pond 21 and step f flowing in step e.
The technique further includes the treatment process to river water, and the river water treatment process is related to grille well IV 25, river
Water conditioning tank 26, inclined-tube sedimentation tank 27, valveless filtering pool 28, river water recoil pond 29, back-flushing flotation tank 30 and river water clear water reserviors
31；The river water flow to valveless filtering pool first through grille well IV 25, by river water conditioning tank 26, then after inclined-tube sedimentation tank 27
28；The river water part filtered through valveless filtering pool 28 is flowed directly to river water clear water reserviors 31；Another part first through river water recoil pond 29,
River water clear water reserviors 31 are flow to after back-flushing flotation tank 30 again.
The grid slag obtained through the grille well I 1, grille well II 3, grille well III 4, grille well IV 25 transports outward burning.
The mud cake outward transport processing obtained through the white clay squeezer.
The dross that the air floatation machine I 5 generates drains into acid sludge concentration basin 24, then drains into pressure mud computer room 33.
It is heavy that precipitating sludge, the aerobic sedimentation tank of dross, the generation of anaerobic precipitation pond that the air floatation machine II 6 generates generate
Shallow lake sludge, the precipitating sludge for demodulating sedimentation basin generation, the precipitating sludge of cotton class detention tank generation, inclined-tube sedimentation tank generate
The dross that precipitating sludge and back-flushing flotation tank generate drains into alkaline sludge concentration basin 35, then drains into pressure mud computer room.And it presses
The mud cake that mud computer room generates is outward transport processing.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore: it is all according to
The equivalence changes that structure of the invention, shape, principle are done, should all be covered by within protection scope of the present invention.
Claims (10)
1. a kind of dyeing and printing sewage classifying and processing process, characterized in that dyeing and printing sewage is divided into chemical fibre class sewage and cotton class is comprehensive dirty
Water two is big, and chemical fibre class sewage is divided into alkali reduced sewage and general two group of sewage of chemical fibre, then handled；Processing step is such as
Under:
A. alkali reduced sewage is first passed through grille well I (1) to handle through acid out again, reinjects general waste water tune after obtaining Alkali reduction filtrate
It saves in pond (2)；
By the general sewage of chemical fibre by after grille well II (3) after the general filtrate of chemical fibre, reinject general wastewater equalization pond (2)
In；
By dyeing and printing sewage by after grille well III (4), then after materializing strategy cotton class filtrate is spare；
B. acid and Polyferric Sulfate will be added in the general wastewater equalization pond (2) for being marked with Alkali reduction filtrate and the general filtrate of chemical fibre in step a
Be mediated, after combined sewage I；
C. by the combined sewage I obtained through step b inject air floatation machine I (5), after obtain combined sewage II；
D. by the obtained combined sewage II of the rapid c of progress and the cotton class filtrate obtained through step a injection air floatation machine II (6), after must mix
Close sewage III；
E. by the combined sewage III obtained through step d injection efficient anaerobic tank processing, after combined sewage IV；
F. by the combined sewage IV obtained through step e injection anoxic pond (7) processing, after combined sewage V；
G. by the combined sewage V obtained through step f injection high-efficiency aerobic pond processing, after combined sewage VI.
2. a kind of dyeing and printing sewage classifying and processing process according to claim 1, it is characterized in that: alkali subtracts in the step a
After amount sewage passes through grille well I (1), and pass through decrement water conditioning tank (8) and adjust, using acid precipitation reaction bucket (9) acid out, finally
Alkali reduction filtrate is obtained by white clay squeezer (10)；After dyeing and printing sewage passes through grille well III (4) in the step a, and pass through
Cotton class sewage conditioning tank (11) is adjusted, and is reacted using cotton class sewage reaction tank (12), most afterwards through cotton class detention tank (13)
Precipitate to obtain cotton class filtrate.
3. a kind of dyeing and printing sewage classifying and processing process according to claim 1, it is characterized in that: alkali subtracts in the step b
The ratio for measuring filtrate and the general filtrate of chemical fibre is 3:42.
4. a kind of dyeing and printing sewage classifying and processing process according to claim 1, it is characterized in that: the cotton in the step a
Class composite wastewater is made of cotton desizing sewage, cotton stamp sewage and cotton dyeing sewage；And cotton desizing sewage, cotton stamp sewage and cotton
The ratio of dyeing waste is 5:7:8.
5. a kind of dyeing and printing sewage classifying and processing process according to claim 1, it is characterized in that: after step g processing
Obtained combined sewage VI produces pond (32) through ultrafiltration again after ultrafiltration pond (14) when needed and obtains filtrate I；The filter
Liquid I obtains filtrate II after RO system (15), and filtrate II produces pond (16) heel row to workshop depth by RO again when needed and returns
With.
6. a kind of dyeing and printing sewage classifying and processing process according to claim 5, it is characterized in that: the filtrate II is being not required to
Filtrate III is obtained behind RO concentrated water pond (17) when wanting；Filtrate III can be immediately discharged to wait outlet in outlet pond (18), can also pass through again
Fenton oxidation pond (19) most drains into again after demodulating sedimentation basin (20) afterwards and waits outlet in outlet pond (18).
7. a kind of dyeing and printing sewage classifying and processing process according to claim 6, it is characterized in that: obtained after step g processing
Combined sewage VI drains into after demodulating sedimentation basin (20) again when not needed waits outlet in outlet pond (18).
8. a kind of dyeing and printing sewage classifying and processing process according to claim 1, it is characterized in that: the efficient anaerobic in step e
Pond is made of anaerobic pond (21) and anaerobic precipitation pond (22), the combined sewage III obtained through step d first through anaerobic pond (21),
By anaerobic precipitation pond (22), obtained liquid is back in anaerobic pond (21) again and obtains combined sewage IV after repeatedly recycling.
9. a kind of dyeing and printing sewage classifying and processing process according to claim 8, it is characterized in that: the height in the step g
Effect aerobic tank is made of aerobic tank (23) and aerobic sedimentation tank (24), and the combined sewage V that the step f is obtained first passes through
Oxygen pond (23), after by aerobic sedimentation tank (24)；The liquid reflux obtained through aerobic tank (23) is into the anoxic pond (7) of step e
It flow to aerobic sedimentation tank (24) again after repeatedly recycling；The liquid that the aerobic sedimentation tank (24) obtains is back to step respectively
Combined sewage VI is obtained after repeatedly recycling in anaerobic pond (21) in e and the anoxic pond (7) in step f.
10. a kind of dyeing and printing sewage classifying and processing process according to claim 1, it is characterized in that: the technique further includes
To the treatment process of river water, the river water treatment process is related to grille well IV (25), river water conditioning tank (26), inclined-tube sedimentation tank
(27), valveless filtering pool (28), river water recoil pond (29), back-flushing flotation tank (30) and river water clear water reserviors (31)；The river
Water by river water conditioning tank (26), then flow to valveless filtering pool (28) first through grille well IV (25) after inclined-tube sedimentation tank (27)；Through
The river water part of valveless filtering pool (28) filtering is flowed directly to river water clear water reserviors (31)；Another part first recoils pond through river water
(29), it then after back-flushing flotation tank (30) flow to river water clear water reserviors (31).
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