CN108585349A - A kind of method that biology-materialization joint technology handles pickles cleaning waste water with high salt - Google Patents
A kind of method that biology-materialization joint technology handles pickles cleaning waste water with high salt Download PDFInfo
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F9/00—Multistage treatment of water, waste water or sewage
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- C02F1/00—Treatment of water, waste water, or sewage
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- 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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- 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
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Abstract
The problems such as the invention discloses a kind of biological materialization joint technology to handle the method that pickles with high salt clean waste water, and solve the prior art is influenced by waste component, and treatment conditions control is difficult, and effluent quality is unstable, water outlet is bad；The colloidal sol and suspended substance in waste water water body are removed including (1) composite flocculation agent；(2) flocculation water outlet is passed through anaerobic system, most of organic matters in degradation and decomposition water；(3) anaerobic effluent is passed through aerobic biochemical system, and degradation and decomposition residual organic matter reduce NH3H, TP concentration；(4) outputted aerobic water supernatant pH is adjusted, carries out the remaining ammonia nitrogen of stripping removal under alkaline condition；And add coagulant before alkaline stripping terminates and remove phosphate, reduce TP；(5) it uses activated carbon adsorption to carry out advanced treating, makes water outlet COD, NH3H, the indexs such as TP, SS, turbidity, coloration reach 2002 integrated wastewater discharge standard primary standards of GB8978；The processing that waste water is cleaned suitable for pickles factory pickles with high salt, has certain application prospect.
Description
Technical field
The present invention relates to industrial waste water treatment more particularly to a kind of biology-materialization joint technology processing are with high salt
The method that pickles clean waste water.
Background technology
Pickles, Sichuan Style is with a long history, is known as " bone of Sichuan cuisine ".A part indispensable as traditional food flavouring,
Deep to be praised highly and favored by people, all parts of the country all form the enterprise clusters with regional characteristics being unfolded around pickles, pickles
Industry is already belonging to significant one of the agricultural product production and processing industries in Sichuan Province.According to《Pickles, Sichuan Style industrial development planning》(2009-
2012) related data shows that in Sichuan, pickles processing enterprise accounts for the 70% of fruits and vegetables enterprise of the whole province, accounts for the provincial dragon of vegetables
The 78% of head enterprise.By development, Sichuan is completed 2,200,000 mu of pickles raw material site, cultivates the enterprise of the more than one hundred million members of annual sales revenue
Industry 19 creates 8 " Famous Chinese Brands ", 19 " famous marks ", 17 Sichuan famous agricultural product brands.According to national statistics data
It has been shown that, 2016,3,600,000 tons of Pickles, Sichuan Style yield, 31,000,000,000 yuan of the output value accounted for about the 70% of national pickles yield, it is contemplated that 2017
Year, Pickles, Sichuan Style yield will be up to 3,800,000 tons, and the output value will be up to 32,000,000,000 yuan.As agriculture supply side structural reform deeply promotes,
Sichuan promotes " one or two tertiary industry fusion development ", " small pickles " is made " big industry ", " pickles+modern life " " pickles+interconnection
Net " becomes the new trend of conventional Kimchi development.The supply of a large amount of natural resources is needed in the production process of pickles, especially
Water resource, therefore the more growth of pickles industry also implies to generate and more and more produces waste water.Especially in pickle salt
A large amount of high-concentration waste water with high salt is produced in stain and finishing passes, the main pollutant component of the waste water is plant fiber, plant
The substances such as amino acid, organic acid, alcohols, salt and calcium and magnesium have salinity high (salt content 1%-4%), high organic content
(CODcr 4600-28000mg/L), nitrogen phosphorus height (NH3- N is 60-1000mg/L) the features such as, intractability is big, direct emission
Not only directly cause the salination of the water quality deterioration and soil environment of water environment, and affect indirectly aquatic animals and plants growth,
The fish reproduction even safety of the mankind.Therefore, the polluter in removal pickles cleaning waste water, reduces or even eliminates pickle wastewater
Threat to environment and the ecological balance is very necessary work.
Pickle wastewater belongs to typical high-salt wastewater, and intractability is big.Traditional processing method mainly has physico-chemical process, biology
Method, biology-materialization joint technology.Physico-chemical process includes mainly evaporation and concentration-cooling crystallization technology, Fenton oxidation method, UF membrane
Technology etc..If Tian Wei Chemical Co., Ltd.s handle high-concentration salt-containing wastewater using film concentration+multiple-effect evaporation, waste water saliferous is mainly
Sodium chloride, it can be achieved that treated, water indices reach fresh water index to salinity 13000mg/L, and water returns by treated
Great lot of water resources is saved for circulating cooling make-up water, but condensing mode is mainly deposited using vacuum concentration and heating evaporation, such method
The defects of energy consumption is big, operation cost is high, and membrane separation technique then exists with the extension of processing time and the increase for the treatment of capacity,
Fouling membrane aggravates, treatment effeciency reduces and film concentrate concentration increases the problems such as being difficult to dispose, while the condition of Fenton oxidation
It is difficult to control.Pickle wastewater biological treatment at present is mostly based on biological treatment, however the difficult point of biological treatment is how to establish
Stable biosystem.Microorganism is very sensitive to salinity, excessively high salt branch inhibit microorganism growth, microorganism it is new old
Metabolism can be interfered, and can be reduced to the removal rate of organic matter.Therefore the generally use sludge in the actual treatment of pickle wastewater
Domestication or inoculation the methods of Halophiles establish the biosystem of stability and high efficiency.But usually there is water outlet not in simple biosystem
Stablize, the problems such as effluent quality is bad, and biology+materialization technology combination then combines biologic treating technique and materializing strategy technology
The advantages of, it can be achieved that standard water discharge stable emissions, become the developing direction of high salinity waste water processing in recent years.
Invention content
In order to solve to be influenced in the prior art by waste component, treatment conditions control is difficult, and effluent quality is unstable, goes out
The problems such as water is bad provides a kind of method that biology-materialization joint technology handles pickles cleaning waste water with high salt.
Technical scheme is as follows：
A kind of method that biology-materialization joint technology handles pickles cleaning waste water with high salt, key step include that (1) adjusting is useless
Water pH removes the colloidal sol and suspended substance in waste water water body, including inorganic matter and organic matter using composite flocculation agent.For apparent
It is exactly the indexs such as common turbidity, SS, coloration, COD, BOD, while also can partly removes some deliquescent impurity；(2) will
Flocculation water outlet is passed through anaerobic system progress anaerobism and the asynchronous culture of simultaneous oxygen Facultative Halophiles is tamed, and is normally transported after system stable water outlet
Row is to degrade and decompose most of organic matters in water；(3) anaerobic effluent is passed through aerobic biochemical system and carries out aerobic Facultative Halophiles
Asynchronous culture domestication, after system stable water outlet normal operation to degrade and decompose residual organic matter, reduce NH3-H、TP
Concentration；(4) outputted aerobic water supernatant pH is adjusted, carries out the remaining ammonia nitrogen of stripping removal under alkaline condition；And in alkaline stripping knot
Coagulant is added before beam and removes phosphate, reduces TP；(5) it uses activated carbon adsorption to carry out advanced treating to waste water after stripping, makes
It is discharged COD, NH3The indexs such as-H, TP, SS, turbidity, coloration reach GB8978-2002 integrated wastewater discharge standard primary standards.
Preferably, the absorption pretreatment flocculant used is PAC, flocculation aid PAM；At the anaerobic-aerobic biochemistry
The anaerobism and oxygen, aerobic salt tolerant strain that strain is asynchronous culture domestication are acted in reason；Alkalinity stripping/the coagulating treatment uses
Ferric trichloride is as coagulant；The activated carbon that the activated carbon adsorption advanced treating uses is modified blocky cocoanut active charcoal.
Preferably, the flocculant is PAC and PAM composite flocculation agents, and addition method is as follows：PAC solution is first added, soon
Speed stops stirring after being stirred, and adds anion PAM solution, 150-350r/min stirs 2min soon, and 30-110r/min is stirred slowly
2min stands to obtain supernatant water outlet into subsequent processing.
Its operation principle is：It cleans in waste water, is caught using PAM nets, bridge formation perfect in shape and function containing the pickles of a large amount of salt
The tiny loose defect of flco, improves flocculation and settling property, eliminates in waste water to the greatest extent under PAC independent roles
Suspended matter and partial organic substances.
Preferably, the anaerobic acclimation period is 44d in the asynchronous culture domestication, and aerobic acclimation period is 16d, and use is asynchronous
Training tames and dociles interval water changing method and carries out culture domestication, and it is as follows to train the method for taming and dociling：The excess sludge and aeration of sewage treatment plant are taken respectively
Pond muddy water mixed solution carries out the incubation under anaerobic and aerobic environment and gradually tames process, wherein aerobic sludge culture
Cheng Jinhang static state (bored exposure) culture；Process is gradually being tamed, after charging is aerated and fuzzy floccule body occurs for the first time, is stopping exposing
Gas keeps mixed liquor quiet heavy, is precipitated by 1-1.5h, exclude supernatant (50%-70% of the total volume)；Then, pickles with high salt
Cleaning waste water can be added by the 10%-20% of design discharge, after reaching preferable treatment effect, be further continued for increasing its proportion.Often
Secondary increased percentage is advisable with the 10%-20% of design discharge, and is further continued for increasing after microorganism adapts to, until at full capacity
Until；It measures sludge index and effluent quality within every 2 days, determines that system is by the identification of strain in the stability and sludge of water outlet
It is no to reach stable.The training of anaerobic sludge is tamed and dociled process and is tamed and dociled compared with process with aerobic sludge training, and the training of anaerobic sludge is tamed and dociled process and is not necessarily to
Aeration, and water temperature need to be maintained at 34-37 DEG C.
Its role is to：Lack strain and enough nutrition in waste water since pickles with high salt clean, needs first to cultivate activity
Sludge；After activated sludge culture maturation, it is added in water inlet and gradually the proportion of pickles cleaning waste water with high salt, domestication activity is dirty
Mud；During domestication, salinity load is stepped up, strain is improved to the tolerance of hypersaline environment, can have place
Manage the processing capacity of the pickles with high salt cleaning waste water of high saliferous.
Preferably, the modified blocky cocoanut active charcoal, method of modifying are：Merchandise active carbon is cleaned and dries it for several times
Afterwards, it is placed in drier and cools down in 600 DEG C of calcination 1h in Muffle furnace, the thin dirt of the removing of 100 mesh dusting covers excessively obtains high temperature modified
Activated carbon.
Its role is to：Significant change, but content of surface oxygen will not occur for the activated carbon after high temperature modified, pore structure
It is substantially reduced, hydrophobic properties of the surface raising, the competitive Adsorption effect of hydrone, the selectivity of enhancing activated carbon can be reduced, carried
Adsorption capacity and total amount of the high activity charcoal to coloration, total phosphorus, hardly degraded organic substance.
Preferably, the composite flocculation agent, PAC dosages are 90-180mg/L in processing procedure, and PAM dosages are
25-125mg/L, inflow temperature are 25-35 DEG C, time of repose 0.5h, pH 5-9.
Preferably, the anaerobic-aerobic biochemical treatment, anaerobism residence time are 20-44h, pH 5-9, and salt content is
0-36g/L；Its aerobic residence time is 3-8h, and aeration intensity is 800-1200ml/ (minL), pH 6-8, salt content 0-
36g/L。
Its operation principle is：Anaerobism and the degradation of simultaneous oxygen salt-durable microbe can make a large amount of albuminoid in waste water
Matter and amino acid degradation are the small-molecule substance containing ammonia nitrogen, to achieve the purpose that remove dissolved organic matter；Simultaneously as should
Process can cause a large amount of raisings of ammonia nitrogen in water outlet, carry out Aerobic Process for Treatment again at this time：The absorption and oxidation of aerobic salt-durable microbe
Effect eliminates remaining small organic molecule and part ammonia nitrogen and total phosphorus.
Preferably, the alkaline stripping/coagulating treatment uses ferric trichloride as coagulant；It is blown in processing procedure neutral and alkali
De- aeration quantity is 0.48-0.96m3/ h, reaction time 1-3h, temperature are 20-40 DEG C, pH 9-12；Terminate in alkaline stripping
Preceding 90-150s, ferric trichloride, reaction time 90-150s are added into waste water water body by the amount of 200-250mg/L, and temperature is
20-40 DEG C, pH 9-12.
Its operation principle is：The remaining ammonia nitrogen in water is eliminated by alkaline stripping；Under alkaline condition, ferric trichloride
It can be acted on hydrate alkalinity and generate a variety of hydrolysates, these hydrolysates carry many positive charges, so glue can be neutralized
Negative electrical charge on body particle, and be combined with negatively charged particulate matter, it has been combined into Fe (OH) afterwards3Precipitation, due to this
Binding ability, so there is flocculation ability and form alumen ustum, while ferric trichloride can be chemically reacted with the phosphate in water
Sediment is generated to remove part TP.
Preferably, the activated carbon adsorption advanced treating, activated carbon dosage are 15-100g/L, reaction time 0.5-
3h, pH 6-8.
Its operation principle is：The abundant pore structure of activated carbon and huge specific surface area are to coloration, total phosphorus and difficult drop
The further Adsorption of organic matter of solution；So that effluent quality is promoted, stable effluent quality and preferably.
Beneficial effects of the present invention are as follows：
Compared to the prior art, the present invention will flocculation pretreatment, anaerobic-aerobic, alkaline stripping/coagulation, activated carbon adsorption
Several biologies and physical-chemical processes clean waste water for pickles with high salt, by technique, step, sequentially optimize, improve every
Cooperation between a step and effect, after being handled according to the present invention program, waste water SS removal rates are 98% or more, COD removal rates
For 96-98%, nitrogen ammonia removal rate is 85-90%, and total tp removal rate is 85% or more, chroma removal rate 50-60%, and is discharged
COD、NH3The indexs such as-H, TP, SS, turbidity, coloration reach GB8978-2002 integrated wastewater discharge standard primary standards；It is suitable for
The processing of pickles factory pickles cleaning waste water with high salt, has certain application prospect.
1. sequence of steps, optimize technique effect；Flocculation pretreatment, removes the colloidal sol and suspended substance in waste water water body, to
The live load of anaerobic-aerobic biochemical treatment process microorganism is reduced, shortens the aeration time of follow-up alkaline stripping and is used for
The activated carbon dosage of absorption reaches the functioning efficiency for improving anaerobic-aerobic biochemical treatment step and effect, the work for reducing cost
With.
2. activated sludge culture improves anaerobic-aerobic Biochemical Treatment and sludge service life；It is tamed and dociled by asynchronous culture
Change the strain in activated sludge, improve tolerance of the strain to hypersaline environment, can have the with high salt of the high saliferous of processing
Pickles clean the processing capacity of waste water.
3. alkaline stripping/coagulating treatment, uses coagulant ferric trichloride and phosphate reaction, makes waste water under alkaline condition
In TP further removed, improve effluent quality.
4. in alkaline stripping/During Coagulation Process, a variety of water are generated since ferric trichloride can be acted on hydrate alkalinity
Solve product, you can the hydrate alkalinity for reducing water outlet makes water outlet pH reach neutral.
5. it is activated carbon modified, improve the adsorption effect to chroma in waste water, total phosphorus and hardly degraded organic substance；By high temperature modified
Activated carbon improves its adsorption efficiency and hole to improve hydrophobic properties of the surface, enhancing activated carbon to the selectivity of adsorbent
Utilization rate.
Description of the drawings
Fig. 1 make a living object-object joint technology handle pickles with high salt cleaning waste water method flow chart.
Specific implementation mode
The present invention uses composite flocculation first for the larger feature of pickles with high salt cleaning waste water suspension content, turbidity
Agent coagulation pretreatment, to reduce suspended matter in waste water, turbidity and partial solubility organic matter；Then pass through anaerobic-aerobic biology
System degradable organic pollutant, ammonia nitrogen and total phosphorus；Then the remaining ammonia nitrogen of stripping removal is carried out under alkaline condition；And it is blown in alkalinity
It is de- to terminate preceding addition coagulant removal phosphate, reduce TP；Activated carbon adsorption advanced treating is finally utilized, to reduce remaining ammonia
Nitrogen, total phosphorus and coloration, and further decrease organic pollution.It is useless that pickles cleaning with high salt is handled by biology+materialization technical tie-up
Water probes into influence of the different factors to treatment effect, more preferably method when providing Combined Treatment for produce reality.
Since the various regions pickles factory technological process of production is different, and according to the type of vegetable for processing difference, calendar variation and clear
Wash the difference of mode, the pickles cleaning wastewater property of generation difference, and also it is activated sludge, Mixing Machine, aerator, anti-
Answer the parameter and performance different from of device, activated carbon etc., therefore without prejudice to essence of the present invention and attached claim scope
Under the premise of, some parameters of the present invention can suitably be adjusted, to adapt to particular situation.With reference to embodiment pair
The present invention is described in further detail, but protection scope of the present invention is not limited to that：
Embodiment 1
Chengdu Xindu District Xin Fan pickles factory pickles with high salt clean waste water, and excess sludge property is as follows：COD is 3443mg/L,
Ss suspended solid is 885mg/L, ammonia nitrogen 48.6mg/L, total phosphorus 11.22mg/L, coloration 115, pH 5, and salt content is
12.3g/L。
Pickle wastewater 100ml, flocculation pretreatment stage is taken to control PAC dosages 150mg/L, PAM dosage 25mg/L, pH6, temperature
30 DEG C of degree, 250r/min stirs 2min soon, and 90r/min stirs 2min slowly；Anaerobic stages control ph is 7, and the residence time for 24 hours, reacts
38 DEG C of temperature；Aerobic stage control ph is 7, residence time 4h, aeration intensity 1000ml/ (minL)；Alkaline stripping control
PH is 9, aeration intensity 0.6m3/ h, reaction time 2.5h, the ferric trichloride of 90s inputs 220mg/L before alkaline stripping terminates,
25 DEG C of reaction temperature；It is 7 that activated carbon adsorption, which controls pH, and activated carbon dosage is 15g/L, reaction time 2h.Being discharged COD is
81mg/L, removal rate 97.6%, ss suspended solid 12mg/L, removal rate 98.6%, ammonia nitrogen 8.55mg/L, removal rate are
82.4%, total phosphorus 0.96mg/L, removal rate 91.44%, coloration 50, removal rate 56.5%, pH 7.
Embodiment 2
Chengdu Xindu District Xin Fan pickles factory pickles with high salt clean waste water, and excess sludge property is as follows：COD is 4963mg/L,
Ss suspended solid is 660mg/L, ammonia nitrogen 53.6mg/L, total phosphorus 14.4mg/L, coloration 110, pH 4.5, and salt content is
10.39g/L。
Pickle wastewater 100ml, flocculation pretreatment stage is taken to control PAC dosages 150mg/L, PAM dosage 25mg/L, pH7, temperature
25 DEG C of degree, 250r/min stirs 2min soon, and 90r/min stirs 2min slowly；Anaerobic stages control ph is 8, residence time 20h, reaction
38 DEG C of temperature；Aerobic stage control ph is 7, residence time 6h, aeration intensity 1000ml/ (minL)；Alkaline stripping control
PH is 10, aeration intensity 0.6m3/ h, reaction time 2.5h, the tri-chlorination of 120s inputs 240mg/L before alkaline stripping terminates
Iron, 35 DEG C of reaction temperature；It is 7 that activated carbon adsorption, which controls pH, and activated carbon dosage is 20g/L, reaction time 2.5h.Water outlet
COD is 88mg/L, removal rate 98.2%, ss suspended solid 9mg/L, removal rate 98.6%, ammonia nitrogen 7.77mg/L, removal
Rate is 85.5%, total phosphorus 0.68mg/L, removal rate 95.28%, coloration 32.5, removal rate 70.5%, pH 7.
Embodiment 3
Chengdu Xindu District Xin Fan pickles factory pickles with high salt clean waste water, and excess sludge property is as follows：COD is 3236mg/L,
Ss suspended solid is 1062mg/L, ammonia nitrogen 32.4mg/L, total phosphorus 13.05mg/L, coloration 110, pH 5, and salt content is
11.75g/L。
Pickle wastewater 100ml, flocculation pretreatment stage is taken to control PAC dosages 150mg/L, PAM dosage 25mg/L, pH6, temperature
30 DEG C of degree, 250r/min stirs 2min soon, and 90r/min stirs 2min slowly；Anaerobic stages control ph is 7, and the residence time for 24 hours, reacts
38 DEG C of temperature；Aerobic stage control ph is 7, residence time 4h, aeration intensity 1000ml/ (minL)；Alkaline stripping control
PH is 9, aeration intensity 0.6m3/ h, reaction time 2h, the ferric trichloride of 150s inputs 200mg/L before alkaline stripping terminates, instead
Answer 40 DEG C of temperature；It is 9 that activated carbon adsorption, which controls pH, and activated carbon dosage is 15g/L, reaction time 2h.Being discharged COD is
61mg/L, removal rate 98.1%, ss suspended solid 10mg/L, removal rate 99.1%, ammonia nitrogen 2.6mg/L, removal rate are
92%, total phosphorus 0.94mg/L, removal rate 92.8%, pH 7.
Comparative example 1
COD is 3236mg/L, ss suspended solid 1062mg/L, ammonia nitrogen 32.4mg/L, total phosphorus 13.05mg/L, coloration
For 110, pH 5, salt content 11.75g/L.
Saliferous pickle wastewater 100ml is taken, flocculation pretreatment, control PAC dosages 150mg/L, PAM dosage 25mg/ are only carried out
L, pH6,30 DEG C of temperature, 250r/min stir 2min soon, and 90r/min stirs 2min slowly, and standing sedimentation 30min takes supernatant.It is discharged COD
For 2184mg/L, removal rate 32.5%, ss suspended solid 36mg/L, removal rate 96.6%, ammonia nitrogen 29.6mg/L, removal
Rate is 8.6%, total phosphorus 6.03mg/L, removal rate 53.8%, pH 6.
Method is evaluated：Single flocculation pretreatment can efficiently remove the ss suspended solid in waste water water body, but for other
The removal effect of organic matter is bad, cannot be applicable in the processing work of saliferous pickle wastewater.
Comparative example 2
The Chengdu Xindu District towns Xin Fan pickles factory saliferous pickle wastewater, excess sludge property are as follows：COD is 3932mg/L, is hanged
Float SS is 1345mg/L, ammonia nitrogen 57.8mg/L, total phosphorus 15.5mg/L, pH 4.5, salt content 11.79g/L.
It takes saliferous pickle wastewater several, directly carries out anaerobic treatment stage.Using the anaerobic activated sludge for not cultivating domestication
Treatment effect is：Control water inlet pH value is 7.5, and the residence time, 38 DEG C of reaction temperature, water outlet COD was 3088mg/L, removal for 24 hours
Rate is 21.5%, and water outlet pH is 6；Use culture tame after the direct treatment effect of anaerobic activated sludge for：Control water inlet pH value
It is 7.5, the residence time, 38 DEG C of reaction temperature, water outlet COD was 1152mg/L, and removal rate 70.7%, water outlet pH is 7.5 for 24 hours.
Method is evaluated：Single anaerobic activated sludge processing is influenced by salinity and ss suspended solid amount, the place of strain
The degradation effect of reason ability and organic matter is bad, and the strain after being tamed for culture is suitable for the wastewater treatment work of water body with high salt
Make, but Suspended Matter in Water SS amounts are big, organic matter can be wrapped up or is adsorbed in suspended matter, to influence Treatment of Sludge effect, no
The biochemical treatment effect of anaerobic activated sludge after culture is tamed can be given full play to, and Anaerobic Treatment can lead to organic matter degradation, increase
The content for adding ammonia nitrogen in water body is acted on simultaneously for the total phosphorus in water body, coloration almost without removal, cannot be separately from saliferous
The processing work of pickle wastewater.
Comparative example 3
The Chengdu Xindu District towns Xin Fan pickles factory saliferous pickle wastewater, excess sludge property are as follows：COD is 3932mg/L, is hanged
Float SS is 1345mg/L, ammonia nitrogen 57.8mg/L, total phosphorus 15.5mg/L, pH 4.5, salt content 11.79g/L.
It takes saliferous pickle wastewater several, directly carries out the Aerobic Process for Treatment stage.Using the aerobic activated sludge for not cultivating domestication
Treatment effect is：Control water inlet pH value is 7, and the residence time, 20 DEG C of reaction temperature, water outlet COD was 3502mg/L, removal rate for 24 hours
It is 10.9%, water outlet pH is 7.5.
Method is evaluated：The aerobic activated sludge processing for not cultivating domestication has removal effect for the ammonia nitrogen of pickle wastewater, but
Treatment effect there's almost no for COD, ss suspended solid and coloration etc..
Comparative example 4
The Chengdu Xindu District towns Xin Fan pickles factory saliferous pickle wastewater, excess sludge property are as follows：COD is 3932mg/L, is hanged
Float SS is 1345mg/L, ammonia nitrogen 57.8mg/L, total phosphorus 15.5mg/L, pH 4.5, salt content 11.79g/L.
It takes saliferous pickle wastewater several, directly carries out the anaerobic-aerobic treatment stage.It is become reconciled using the anaerobism for not cultivating domestication
Oxygen activity sludge, first carries out Anaerobic Treatment, and control water inlet pH value is 7, the residence time for 24 hours, 38 DEG C of reaction temperature, then carry out aerobic
Processing, control water inlet pH value is 7, residence time 18h, 20 DEG C of reaction temperature, and treatment effect is：Water outlet COD is 1545mg/L, is gone
Except rate is 60.7%, water outlet pH is 6.5.
Method is evaluated：Using the active sludge treatment saliferous pickle wastewater for not cultivating domestication, since strain lacks to high salt
The tolerance of environment, the ability for handling high saliferous pickles cleaning waste water are limited, and coloration is acted on almost without removal,
The processing work of not applicable saliferous pickle wastewater.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. the method that a kind of biology-materialization joint technology handles pickles cleaning waste water with high salt, which is characterized in that including following step
Suddenly：
A. flocculation pretreatment cleans in waste water to pickles with high salt and puts into composite flocculation agent, carries out flocculation pretreatment；
B. anaerobic-aerobic biochemical treatment；
C. alkaline stripping/coagulating treatment；
D. activated carbon adsorption advanced treating.
2. the method according to claim 1 using kinds of processes joint treatment on salt-containing pickle wastewater, which is characterized in that institute
Pickles cleaning waste water with high salt is stated to refer to:The head time generated in leafiness vegetable washing process after being pickled in pickles processing link is clear
Waste water is washed, is in faint yellow, salinity 10-15g/L.
3. the method according to claim 1 using kinds of processes joint treatment on salt-containing pickle wastewater, which is characterized in that institute
It includes the PAC as flocculant and the anion PAM as flocculation aid to state composite flocculation agent；The anaerobic-aerobic biochemical treatment
Effect strain in the process is the anaerobism and oxygen, aerobic salt tolerant strain after asynchronous culture domestication；At the alkalinity stripping/coagulation
Reason uses ferric trichloride as coagulant；The activated carbon that the activated carbon adsorption advanced treating uses is coconut activated for modified bulk
Charcoal.
4. the method according to claim 3 using kinds of processes joint treatment on salt-containing pickle wastewater, which is characterized in that institute
The addition method for stating composite flocculation agent is as follows：
A. PAC solution is added, is quickly stirred；
B. anion PAM solution is added, 2min is quickly stirred, mixes slowly 2min, standing obtains supernatant water outlet.
5. the method according to claim 3 using kinds of processes joint treatment on salt-containing pickle wastewater, which is characterized in that institute
It states asynchronous culture domestication and the method that interval changes water is tamed and dociled using asynchronous training, the anaerobic acclimation period is 44d in the asynchronous culture domestication,
Aerobic acclimation period is 16d.
6. the method according to claim 3 using kinds of processes joint treatment on salt-containing pickle wastewater, which is characterized in that institute
The method of modifying for stating modified blocky cocoanut active charcoal is as follows：
A. activated carbon is taken to clean drying 3-10 times repeatedly；
B. the obtained activated carbons of step a are positioned in Muffle furnace, are placed in 600 DEG C of calcination 1h dry wherein cooling.
7. the method according to claim 4 using kinds of processes joint treatment on salt-containing pickle wastewater, which is characterized in that institute
The addition method for stating composite flocculation agent is as follows：
A. flocculant PAC is added according to the ratio of 90-180mg in every liter of waste water, and be quickly stirred；
B. flocculation aid PAM is added according still further to the ratio of 25-125mg in every liter of waste water, after 150-350r/min quickly stirs 2min
2min is mixed slowly with 30-110r/min again；
C. 0.5h, pH 5-9 are stood.
8. the method according to claim 5 using kinds of processes joint treatment on salt-containing pickle wastewater, which is characterized in that institute
The specific processing step for stating anaerobic-aerobic biochemical treatment is as follows：
A. anaerobism residence time 20-28h, pH 6-8, salt content 0-15g/L；
B. aerobic residence time 3-6h, aeration intensity are 800-1200ml/ (minL), pH 7, salt content 0-15g/L.
9. the method according to claim 3 using kinds of processes joint treatment on salt-containing pickle wastewater, which is characterized in that institute
The specific processing step for stating alkaline stripping/coagulating treatment is as follows：
A. processing procedure neutral and alkali stripping aeration quantity is 0.48-0.96m3/ L, reaction time 1-3h, temperature are 20-40 DEG C, pH
For 9-12；
B. the 90-150s before alkaline stripping terminates, ferric trichloride is added into waste water water body by the amount of 200-250mg/L, reaction
Time is 90-150s, and temperature is 20-40 DEG C, pH 9-12.
10. the method according to claim 3 using kinds of processes joint treatment on salt-containing pickle wastewater, which is characterized in that
The activated carbon adsorption advanced treating, activated carbon dosage are 15-50g/L, reaction time 0.5-3h, pH 6-8.
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