CN207986811U - A kind of processing unit of high concentration rhodanate waste water - Google Patents
A kind of processing unit of high concentration rhodanate waste water Download PDFInfo
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- CN207986811U CN207986811U CN201721616989.4U CN201721616989U CN207986811U CN 207986811 U CN207986811 U CN 207986811U CN 201721616989 U CN201721616989 U CN 201721616989U CN 207986811 U CN207986811 U CN 207986811U
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Abstract
The utility model discloses a kind of bioremediations of high concentration rhodanate waste water.The method of the utility model includes：Using rhodanate efficient degradation bacterium, SCN is utilized‑Grow required nutrient as doing, by rhodanide by microbial metabolism be SO4 2‑、CO2、N2.Technical solutions of the utility model can be in efficient degradation waste water rhodanide.Rhodanate wastewater degradation process is completed by a large amount of microorganisms, including bacterium, actinomyces and fungi, and cyanide and rhodanate are degraded to ammonia, carbon dioxide and sulfate by these microorganisms.The method that the oxidation and absorption of all rhodanides and cyanide usually through a large amount of microorganisms are combined is removed.Thiocyanate waste water microbiological treatment carries out in particular organisms oxidation pond, needs the microorganism growth conditions that artificial creation is suitable, cultivates rhodanate efficient degradation bacterium, and microorganism is made full use of to purify sewage to the decomposition of rhodanate with high efficiency.COD is drained after processing<100mg/l, ammonia nitrogen<8mg/L、CN<0.5mg/l.
Description
Technical field
The utility model is related to field of environment engineering technology, and in particular to a kind of Biochemical method high-concentration sulfur-containing cyanate
The processing unit of waste water.It can be applied to the fields such as Industrial Wastewater Treatment.
Background technology
Thiocyanate ion (SCN-) it is negatively charged one kind, polyatom, linear type ion, with-S-C ≡ N and-N=C=S
Two kinds of structures exist, and have preferable complexing.Rhodanide is as a kind of important industrial chemicals, in textile printing and dyeing, fining
The fields such as work, medical industry are widely used.During preparing industrial products, it is often excessive and cannot be completely anti-to add ratio
It answers, a large amount of rhodanate is caused to enter waste water system.Containing SCN-Waste water be directly discharged into environment not only and keep a large amount of chemical industry former
Stream is lost, and can also be impacted to ecological environment.Rhodanide enters useless also in the form of cyanide derivatives in industrial production
Aqueous systems, as gold macerates factory's rhodanide mostly with cyanide gold-leaching goes out the chemical reaction of process cyanide and sulphur and generates, in sulphur
Change in mine Cyanide Leaching in waste water rhodanide concentration up to 2000~3000mgL-1, become content highest in Cyanide Leaching waste water
One of inorganic pollution, the major pollutants of mine waste water are soaked with composition cyanidings such as cyanide, heavy metal and ammonia nitrogens.
SCN-Water ecological setting can be polluted, it is also harmful to the health of biology.It is F that rhodanate, which restores order,-
<Cl-<Br<CN-<SCN-<I；K2CrO7When method surveys COD value, 1mg SCN-Contribution to COD value is 1.10mg, is to be only second to phenols
The second largest sources COD.In addition, SCN-It is oxidized to release a large amount of ammonia nitrogen, and ammonia nitrogen is the master for causing body eutrophication
Pollutant is wanted, it can consume the dissolved oxygen content in water body, lead to body eutrophication, SCN-With strong coordinating, be easy with
Fe in water body3+、Cu2+Equal metal ions occur complex reaction generation metal complex and cause chroma in waste water height.Thiocyanate radical from
Sub- stability is poor, the SCN in waste water-It is easy to react generation extremely toxic substance cyanogen chloride with chlorine oxidation agent or is oxidized to cyaniding
Object causes wastewater toxicity to increase；SCN simultaneously-Itself has toxicity, SCN in normal human's blood plasma-Concentration is 0.1~0.4mg/L,
Excess intake rhodanate can interfere body to the utilization of iodine, cause human body acute poisoning.The sulphur in specific construction practice
Cyanide wastewater complicated component, the golden waste water that such as macerates, practice burnt waste water, agricultural chemicals waste water, characteristic contamination sulphur removal at acrylic fiber wastewater
It is accompanied by a large amount of CN other than cyanide-、NH4+- N, phenols, organic amine etc..Such wastewater treatment needs emphasis to examine how filter drops
Harm caused by low wastewater toxicity, coloration and reduction secondary pollution.
The chemical degradation method of thiocyanate waste water is commonly deep oxidation method, by SCN-It is oxidized to SO4 2+、HCO3 -、HN4+
Etc. forms be removed.Wherein representative Pomolio-Celdecor process, sour chlorine method, Yin Kefa, acidification absorption-neutralisation, Ozone, wet type
Air oxidation process, ion-exchange etc..By taking Ozonation as an example, 1g SCN are removed-Need the ozone of about 5 grams of consumption, place
It manages of high cost.It can be seen that most of chemical degradation methods are big for the desulfurization waste liquor chemical cost for handling the SCN- containing high concentration,
It is costly although chemical method is effective and feasible, and secondary pollution problem easily is brought, as chlor-alkali easily causes the exceeded of chlorion.
Utility model content
The utility model provides a kind of biological treatment device of high concentration rhodanate waste water, being capable of efficient degrading waste water
In rhodanide.Including：It is macerated the rhodanate and simultaneous low dense leached in waste water using Biochemical method gold
Degree cyanide (easily discharges cyanide<10mg/L), annual water inlet thiocyanate concn 2067mg/L in industrial practice, is handled out
Water concentration is less than 0.56mg/L, and removal rate is up to 99.96%, and highest removal rate is up to 99.99%, and the bioanalysis is not only to rhodanate
It almost degrades, integrated wastewater discharge standard requirement can be reached to the processing of COD and ammonia nitrogen.COD is drained after processing<
100mg/L, ammonia nitrogen<15mg/L, CN<0.5mg/L.
The technical solution of the utility model：A kind of device of Biochemical method high-concentration sulfur-containing cyanate waste water, it is main
Including：Regulating reservoir is connected to denitrification pond, and denitrification pond is sequentially communicated level-one nitrification tank, two level nitrification tank and sedimentation basin, precipitation
Bottom of pond portion is connected to sludge-tank, and air blower is separately connected regulating reservoir, level-one nitrification tank and two level nitrification tank；Sludge-tank top is distinguished
It is connected to level-one nitrification tank and two level nitrification tank；It is efficient that thiocyanate is placed in the level-one nitrification tank and two level nitrification tank
Bacterium for degrading activated sludge.
The level-one nitrification tank and two level nitrification tank install biomembrane.
Agitating device is arranged in the denitrification pond.
Nutritional agents is added in the nitrification tank：Organic carbon：Kjeldahl nitrogen：Phosphate=100：5：1.
Above-mentioned technical proposal, which can be seen that, is macerated since the utility model embodiment is used using Biochemical method gold
The rhodanate gone out in waste water can reach very high removal effect.
The beneficial effects of the utility model：
Microorganism can be catalyzed in rhodanate as nitrogen source and sulphur source in waste water when Biochemical method rhodanide waste water
SCN- generate NH4+, SO42- and CO2, and pollutant components such as degradable ammonia nitrogen COD simultaneously overcome materilization freatment method drop
Halfway disadvantage is solved, treatment technology key is that the activity containing the dominant bacteria that can directly handle SCN- is added in nitrification tank
Sludge.
In the research and practice process to the method, the inventors found that：Rhodanate is cultivated efficiently to drop
Bacterium is solved, component S, C, N of SCN- are the nutrients needed for biological growth, and microorganism can be using SCN- as doing
Nutrient needed for growth, metabolite SO42-, CO2, ammonia etc.；Oxidation 100mg SCN- will produce about 24mg HN4+-N, wherein
10% is bioavailable and is converted into biomass, other then enter water body in the form of NH4+, and the NH4+ concentration in water is caused to increase, because
This need to be carried out at the same time the biological treatment of ammonia nitrogen when using Biochemical method SCN-.SCN- degradation mainly under aerobic condition into
Row, biological treatment part is mainly completed by removing carbon unit and denitrogenation unit.
To in the application example of high concentration rhodanate biological wastewater treatment, at Guizhou Jin Feng mining industry Co., Ltd waste water
Science and engineering journey is analyzed, it is found that the rhodanide in waste water is mainly utilized in aerobic process in the group technology, and one
, there is rhodanide degradation function bacterium in Long-term selection and domestication of the grade nitre pond sludge by high concentration rhodanide.Select level-one
Nitrification tank sludge bacterium source, the method by cultivating high concentration domestication, filter out using rhodanide as sole carbon, nitrogen and sulphur source from
Oxygen animalcule flora, the flora are tamed derived from the golden waste water that macerates of high concentration rhodanide and can be shown to sulphur cyanogen for a long time
The efficient degradation of compound.The rhodanate in efficient degradation waste water, removal rate may be implemented in its biological treatment in industrial practice
Up to 99.99%.
Microorganism can utilize cyanide, rhodanate synthesizing amino acid etc. in their cellular process.Some belong to
Nocardia and actinomyces can survive in the cyanide containing 50~100mg/L and rhodanide solution, and by adapting to
Property culture, additionally it is possible to be metabolized Cymag, potassium cyanide.As pseudomonas (Pseudomonas, sp) can be CN-It is decomposed into two
Carbonoxide and ammonia.1/3 cryanide ion of wherein cyanogen root is utilized by the cells, and is converted into CO2；Remaining 2/3 cryanide ion is then with three
Hydroxy acid recycles and assimilation.Cyanide, rhodanide can be decomposed into ammonia, carbon dioxide and sulfuric acid by Thiobacillus in the presence of sulphur
Salt.Nitrogen-fixing bacteria generate azotase, and so that cyanate is converted into ammonia and methane in reproducibility culture medium.The micro- life of sewage containing rhodanide
The biological chemistry action of object is：
Following reaction occurs under the action of microorganism for the process that rhodanate is aoxidized：
SCN-+2H2O+2O2=CO2+SO4 2-+NH4+ (1)
SCN-+3H2O+1/2O2=CO2+SO4 2-+NH4+ (2)
SCN-+2H2O=CO2+S2-+NH4++2OH- (3)
Reaction equation (1) carries out under aerobic conditions；Reaction equation (2) carries out under the conditions of anoxic or oxygen are restricted；Reaction
Formula (3) carries out under anaerobic.
Microbial destruction CN-One assume such as equation (4)：
CN-+3H2O+1/2O2=CO2+2OH-+NH4+ (4)
Processing high-concentration sulfur-containing cyanate wastewater biological degradation process is：Bioanalysis removal rhodanate mainly divides three
Stage completes：
First stage：Aerobic ammonification, under aerobic conditions, by the metabolic process of bacterium rhodanate be converted into ammonia and
Sulfate, chemical formula are represented by：
2SCN-+5H2O+3O4 2-=SO4 2-+(NH4)SO4+CO2+CH2O (5)
This process needs to keep enough dissolved oxygen contents (DO).
Second stage：Aerobic nitrification, i.e., the ammonia nitrogen generated the first stage carry out nitration reaction, nitrifying process through nitrifier
Middle generation NO2- N and NO3- N, this process also need nitre to consume a large amount of dissolved oxygen.In addition, must have the alkali for keeping enough in sewage
Degree causes pH value to decline, nitrifier is made to be affected, rate of nitrification is made to reduce because nitration reaction consumes alkali.
Phase III：Denitrification or synchronous nitration-denitrification, denitrification carries out in denitrification pond, in the state of anoxic,
Nitrate nitrogen (NO2- N and NO3- N) effect through denitrifying bacterium is reduced to N2And it is removed.Anoxic denitrification must be nitrification liquid
(nitrification tank mixed liquor or secondary settling tank sludge) is back in the denitrification pond equipped with stirring or aerator and carries out.Simultaneously in waste water
There are enough carbon sources to carry out the inorganic carbon source consumed during additional nitration, this process also output alkali makes basicity rise, can be with
Reduce the alkali consumption of nitration section.Synchronous nitration and denitrification reaction process can carry out in aerobic reactor simultaneously, i.e. nitrobacteria
Mineralized nitrogen is first nitrate nitrogen (NO by the state coexisted with denitrifying bacteria, nitrococcus and nitrobacteria2- N and NO3- N),
Again nitrate nitrogen is converted to N by denitrifying bacterium2Or NO2Gas.This application process has been confirmed in industrial practice.
Using in Biochemical method gold Cyanide Leaching waste water rhodanate and a small amount of cyanide (easily discharge cyanide<
10mg/L), annual water inlet thiocyanate concn 2067mg/L in industrial practice, processing aqueous concentration are less than 0.56mg/L, go
Except rate is up to 99.96%, up to 99.99%, which not only almost degrades to rhodanate highest removal rate, and runs
Stablize, integrated wastewater discharge standard requirement can be reached to the processing of COD and ammonia nitrogen.COD is drained after processing<100mg/L, ammonia
Nitrogen<8mg/L.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the flow chart of the utility model high concentration rhodanate wastewater treatment method.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
The all other embodiment obtained, shall fall within the protection scope of the present invention.
The utility model embodiment provides a kind of bioremediation of high concentration rhodanate waste water, can efficiently remove
Rhodanate in waste water, the utility model embodiment also provide corresponding call processing system.It carries out individually below specifically
It is bright.
The utility model is described in detail with reference to the accompanying drawings and examples.
A kind of device of Biochemical method high-concentration sulfur-containing cyanate waste water includes mainly：Regulating reservoir 1 and denitrification pond
2 connections, denitrification pond 2 is sequentially communicated level-one nitrification tank 3, two level nitrification tank 4 and sedimentation basin 5,5 bottom of sedimentation basin and sludge-tank 6
Connection, air blower 7 are separately connected regulating reservoir 1, level-one nitrification tank 3 and two level nitrification tank 4；6 top of sludge-tank respectively with level-one nitre
Change pond 3 to be connected to two level nitrification tank 4.Thiocyanate efficient degradation is placed in the level-one nitrification tank 3 and two level nitrification tank 4
Bacterial activity sludge.
Agitating device is arranged in denitrification pond 2.Nutritional agents is added in the nitrification tank：Organic carbon：Kjeldahl nitrogen：Phosphate=
100：5：1.
Level-one nitrification tank 3 and two level nitrification tank 4 install biomembrane.Biofilm is the method for belonging to Aerobic biological process,
It is by waste water by aerobic microbiological and protozoan, the biology that growth and breeding is formed on carrier filler such as metazoa
Film, absorption and degradation of organic substances, the method for making waste water be purified.It is to be stablized with biomembrane and clear under abundant oxygen supply condition
The sewage water treatment method of stripping water.Biomembrane be by the aerobic bacteria of highly dense, anaerobic bacteria, amphimicrobe, fungi, protozoan with
And the ecosystem of the compositions such as algae, the solid dielectric of attachment are known as filtrate or carrier.Biomembrane can be divided into outward from filtrate
Anaerobic layer, aerobic layer, attachment water layer, movement water layer.
Biofilm is the aggregation that microorganism grows in a organized way.Bacterium is irreversible to be attached to inertia or active entities
Surface, breeding, differentiation, and some polysaccharide matrixes are secreted, by the phage populations package wherein aggregates of bacteria membranoid substance of formation.
Single biofilm can be formed by one or more different microorganisms.
The carrier (commonly referred to as filler) that microorganism grows aggregation is set in wastewater treatment structures, in the condition of oxygenation
Under, on filler surface, poly- attachment forms biomembrane to microorganism, and by oxygenation, (oxygenate apparatus is by water treatment aeration wind turbine and aerator
Composition) waste water when flowing through filler with certain flow velocity, the microorganism in biomembrane absorbs the organic matter decomposed in water, makes sewage
It is purified, while microorganism is also proliferated, biomembrane thickens therewith.When biomembrane rises to certain thickness, to biology
The oxygen spread inside film is restricted, and surface is still aerobic state, and internal layer can be in then anoxic even anaerobic state, and final
Lead to falling off for biomembrane.Then, filler surface also will continue to grow new biomembrane, in cycles, make to purify the sewage.
Microorganism is after the poly- attachment in filler surface forms biomembrane, and due to the suction-operated of biomembrane, there are one on surface
The very thin water layer of layer, the organic matter in water layer by biomembrane oxygenolysis, therefore the organic concentration concentration ratio in water layer into
Water is much lower, and when waste water is flowed through from biofilm surface, organic matter will be transferred to from moving waste water and be attached to life
In the water layer of object film surface, and further adsorbed by biomembrane, meanwhile, the oxygen in air also passes through waste water and enters biology
Film water layer simultaneously internally shifts.
Microorganism on biomembrane to pollutant decompose under conditions of having dissolved oxygen and body progress itself is new old
Metabolism, therefore the inorganic matters such as carbon dioxide generated are transferred to again along opposite direction from biomembrane by attachment water layer
In the waste water of flowing or in air.So, the pollutant load of water outlet is reduced, and waste water is purified.
Rhodanate give up biological treatment system operating procedure be：The thiocyanate waste water that need to be handled enters regulating reservoir warp
Sewage pump, which enters, to be entered two-stage biological nitrification tank after denitrification pond carries out biological denitrification processing and injects air aeration, is made
Sewage is sufficiently mixed with activated sludge (thiocyanate efficient degradation bacterium), and supplies the enough dissolved oxygens of mixed liquor.At this moment
Rhodanate and other organic sludge objects in sewage are decomposed by the aerobic microbiological in activated sludge, and last mixed liquor enters heavy
Shallow lake pond, activated sludge are detached with clarification of water, and amount of activated sludge returns to nitrification tank or denitrification pond, continues purification process,
Clear water discharge.Since activated sludge constantly increases in processing procedure, some residual sludge is pumped by sludge from sedimentation tank from being
It is discharged in system, to maintain system to stablize.Wastewater degradation process is completed by a large amount of microorganisms, including bacterium, actinomyces and fungi,
Cyanide and rhodanate are degraded to ammonia, carbon dioxide and sulfate by these microorganisms.All rhodanides and cyanide are logical
The method that oxidation and absorption often through a large amount of microorganisms are combined is removed.Thiocyanate waste water microbiological treatment is in spy
Determine to carry out in structures, needs artificial creation's suitable micro-organisms growth conditions, cultivate rhodanate efficient degradation bacterium, fully
Sewage is purified with high efficiency to the decomposition of rhodanate using microorganism.
Thiocyanate waste water microbiological treatment carries out in particular structure, and artificial creation's suitable micro-organisms is needed to give birth to
Elongate member cultivates rhodanate efficient degradation bacterium, makes full use of microorganism to the decomposition of rhodanate with high efficiency
Purify sewage.The culture and domestication of activated sludge, the culture or generation of activated sludge need the nutrition needed for strain and strain
Substance generally requires waste water BOD5/ CODcr ≈ 0.5 (generally should be 0.45 or more), about 25 DEG C of water temperature, so that it may direct recruitment
Industry waste water is cultivated, and can also be inoculated with the fresh activated sludge of similar sewage treatment plant and be cultivated and tamed.Because of Industry Waste
Water water-quality constituents is more complicated, and nutrition content is all relatively low, and according to circumstances additional battalion is also needed during activated sludge culture
It supports in substance to waste water, predominantly phosphorus and carbon nutrition.
Waste water is introduced into biochemical treatment system first.When denitrification pool water level reaches design water level, opens underwater stirring and set
It is standby, and waste water is introduced into a two level nitrification tank, when nitrification pool water level reaches design water level, opens aerator (wind turbine) and is aerated,
Waste water after aeration enters after sedimentation basin is separated by solid-liquid separation, primary water discharge；Start sludge reflux pump by the dirt in sludge-tank
Mud is back to level-one nitrification tank.The dissolved oxygen concentration of nitrification tank need to be controlled in 2.0~3.0mg/L or so.In this way after 5~6d
If (temperature is properly), just it is observed that the floccule (zoogloea) slightly obscured when surveying settling ratio with 1000mL graduated cylinders.For
It supplements the nutrients and excludes to grow harmful metabolite to microorganism, waste water should be supplemented and original dirt is discharged by sedimentation basin
Water.Changing water can intermittently carry out, and can also be carried out continuously.Nitrification tank influent quality is detected, if influent quality ingredient is insufficient
With the nutrients for being supplied to microorganism enough, then organic carbon (TOC) is pressed：Kjeldahl nitrogen (TKN)：Phosphate (XPO4), meet 100：
5：The additional nutrients of 1 ratio, carbon nutrition is optional, adds cerelose, methanol, animal wastes etc., since thiocyanate is useless
For water containing sufficient nitrogen nutrition without additional nitrogen source, phosphorus nutrition is optional, adds tertiary sodium phosphate, potassium dihydrogen phosphate etc..
The method of intermittent aerating cultivation, such as can be used and change water 2~4 times daily.After sewage is introduced nitrification tank, start drum
Fan operation stops aeration after bored exposure 6h, then precipitates 1h, then supplement fresh wastewater into nitrification tank, at the same by raw wastewater from
Effluent weir is discharged.Quantity of exchanged water can be controlled in the 25% of nitrification pool capacity, and then repeatedly aforesaid operations start dirty up to continuum micromeehanics
Mud flows back.Be important to arouse attention is regardless of intermittent aerating or continuous aeration, and nitrification tank exit dissolved oxygen preferably controls
2.0~3.0mg/L；The reflux ratio of sludge reflux is within 100%.According to activated sludge growth situation, aeration quantity is suitably adjusted,
It is continued until when 30 minutes settling ratios of mixed liquor are 10%~30% and stops in this way.Under conditions of 25 DEG C, generally pass through 15~
30d, so that it may to reach treatment effect.
Work as activated sludge concentration, i.e. MLSS concentration increases to a certain concentration, such as 1500mg/L, is detected with 1000mL graduated cylinders
When settling ratio SV is 30%, then index is settled：SVI=100~150 (mL/g) belong to the good index of activated sludge.Mark is lived
Property sludge for agricultural use reaches requirement, and sewage treatment plant can normal operation input.
If inocalation method also can be used in order to turn out activated sludge quickly, i.e., it is similar dirty that other are added into aeration tank
The fresh dewatered sludge of water treatment plant.In order to accelerate activated sludge culture speed, nutriment is added such as into aeration nitrification tank
Excrement water etc. accelerates the breeding of biology.It, can be with after first time enters waste water and is aerated and after bored exposures for several times intermittently changes water
Using continuously changing water mode.When continuously changing water, sludge back flow quantity can flow back by 80%~100% amount.Change water can extend to 1.5~
2d is primary, to make full use of nutriment.General water treatment plant is quasi- using strain is suitably added, and first intermittently changes water, continuously changes afterwards
Water mode culture microorganism.Ripe activated sludge has a good flocculation sediment performance, sludge include a large amount of zoogloea and
Infusorian protozoan, such as campanularian, beans shape worm, roaming worm, tired branch worm, and BOD can be made5There is 90% or more removal rate.Such as
Sewage treatment plant require to processed sewage denitrification and dephosphorization, after being basically completed the culture of activated sludge, should also further by
Activated sludge acclimatization is to adapt to the requirement of denitrogenation dephosphorizing.
From activated sludge culture with domestication, water analysis should be chemically examined listed index subjet by water process, by project
Daily analysis record, as far as possible adequately chemically examines water quality, to grasp the progress of cultivation.
During activated sludge culture, domestication, by microorganism growing state, suitable control inflow and base-material is added, together
When control sludge reflux amount.The phase of taming and dociling is trained in activated sludge, should not be excessively aerated, pays attention to dissolved oxygen control in 2~3.0mg/L.
Sewage culture constantly puts into base-material, organic carbon (TOC) with the domestication first stage because inflow is little：Kjeldahl nitrogen
(TKN)：Phosphate (XPO4), 100 should be met：5：1 range.And practical chemical examination detection should be made and verified.If TOC, XPO4Partially
It is small by 50% or more, it is corrected with cerelose or tertiary sodium phosphate.This will verify primary in each debugging stage.
Sludge-tank reflux pump is opened, inactivation or the reduction of activated sludge are prevented.Because stage first stage MLSS concentration is very low,
It is 60~100% or so of inflow that the reflux ratio of returned sludge, which preferably controls,.
When debugging, mixed liquor suspended solid, MLSS (MLSS) concentration of increase nitrification tank that be as fast as possible.MLSS is recorded to increase
Trend.Note that being sure not to exclude sludge at this time, because without excess sludge.When the dewatered sludge strain of input reaches MLSS extremely
1000mg/L, carbon N∶P ratio meet microorganism growth needs, and the growth of microorganism makes MLSS be stepped up.Microscope inspection can be bright
It appears to zoogloea quantity to increase, volume increases, and boundary is more and more obvious.
According to microorganism microscopic examination situation, the dosage of nutrient base material is determined.If microorganism growth is vigorous, can gradually reduce
Base-material adds, until MLSS increases to 3000~5000mg/L.The dispensing of base-material can be generally terminated at this time.
Culture domestication time first stage was one to two week, in the case that first segment training smoothly, you can enter the
Two-stage trains.Second stage training should carry out continuous operation, including sludge reflux.With microbial acclimation it is smooth into
It goes, the mixed genetic-neural network (MLSS) in nitrification tank will gradually increase.By normal operating MLSS reach 3000mg/L with
On, microscopy microorganism well-grown, 100 power microscope microscopies, zoogloea should reach dozens of or more, individual to increase, and boundary is clear
Clear, this is the mark that activated sludge culture succeeds.The time is appropriately extended if not reaching requirement.It is not less than 25 DEG C in water temperature
When, the training time of second stage, generally 2~3 weeks.The activated sludge culture of second stage is that base-material to be gradually reduced is thrown
Amount.
The technology controlling and process after cultivation is completed mainly for following project：
PH value：7.5~8.5；Water temperature：25~30 DEG C；Dissolved oxygen (DO)：2.0~3.0mg/L；Sludge age：15~20 days；
Return sludge ratio (%)：60~100%；Nutritional agents adds：Organic carbon (TOC)：Kjeldahl nitrogen (TKN)：Phosphate (XPO4)=
100：5：1.
Include the compositions such as aerobic bacteria, anaerobic bacteria, amphimicrobe, fungi, protozoan and algae in the activated sludge
The ecosystem, mainly by nitrococcus, nitrifier and the denitrifying bacterium etc. of the desulfurization bacterium of degradation rhodanate and degradation of ammonia nitrogen
Composition.
The active sludge microorganism flora is by including the pseudomonas based on rhodanate of degrading
(Pseudomonas), achromobacter (Achromobacter), thiobacillus thioparus (Thiobacillus), thiobacillus denitrificans
(Bhiobacillus denitrificans) etc.；Nitrosomonas (Nitrosomonas), Asia based on degradation of ammonia nitrogen
Nitrococcus (Nitrosococcus), Nitrosospira (Nitrosospira), Nitrosolobus
(Nitrosolobus), nitrosation vibrio (Nitrosovibrio), Nitrobacter (Nitrobacter), Nitrococcus
(Nitrococcus), Nitraspira (Nitrospira), thiobacillus denitrificans (Bhiobacillus denitrificans),
Alcaligenes (Alcaligenes) etc..These bacterium directly can be cultivated and be tamed generation using thiocyanate waste water, if
Inocalation method also can be used in order to turn out activated sludge quickly, i.e., add other into nitrification tank similar to the new of sewage treatment plant
Fresh dewatered sludge.
The above content is combine the detailed description that optimal technical scheme does the utility model, and it cannot be said that utility model
Specific implementation be only limitted to these, for made under the premise of not departing from the utility model thought it is simple deduction and replacement, all
It should be considered as the scope of protection of the utility model.
It should be noted that the contents such as information exchange, implementation procedure between each unit in above-mentioned apparatus and system, by
In being based on same design with the utility model embodiment of the method, particular content can be found in chatting in the utility model embodiment of the method
It states, details are not described herein again.
A kind of bioremediation for high concentration rhodanate waste water that the utility model embodiment is provided above, into
It has gone and has been discussed in detail, specific case used herein is expounded the principles of the present invention and embodiment, above
The explanation of embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for the one of this field
As technical staff, according to the utility model thought, there will be changes in the specific implementation manner and application range, to sum up
Described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (3)
1. a kind of device of Biochemical method high-concentration sulfur-containing cyanate waste water, it is characterised in that：It includes mainly：Regulating reservoir
（1）With denitrification pond（2）Connection, denitrification pond（2）It is sequentially communicated level-one nitrification tank（3）, two level nitrification tank（4）And sedimentation basin
（5）, sedimentation basin（5）Bottom and sludge-tank（6）Connection, air blower（7）It is separately connected regulating reservoir（1）, level-one nitrification tank（3）With two
Grade nitrification tank（4）；Sludge-tank（6）Top respectively with level-one nitrification tank（3）With two level nitrification tank（4）Connection；The level-one nitre
Change pond（3）With two level nitrification tank（4）Interior placement thiocyanate efficient degradation bacterial activity sludge；Level-one nitrification tank（3）With two
Grade nitrification tank（4）Biomembrane is installed.
2. the device of Biochemical method high-concentration sulfur-containing cyanate waste water according to claim 1, it is characterised in that：Anti- nitre
Change pond（2）Agitating device is set.
3. the device of Biochemical method high-concentration sulfur-containing cyanate waste water according to claim 1, it is characterised in that：It is described
Nitrification tank in add nutritional agents：Organic carbon：Kjeldahl nitrogen：Phosphate=100：5：1.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107963719A (en) * | 2017-11-28 | 2018-04-27 | 贵州锦丰矿业有限公司 | A kind of processing unit and method of high concentration rhodanate waste water |
| CN115895994A (en) * | 2022-12-23 | 2023-04-04 | 东北大学 | Efficient cyanogen-reducing bacteria, enrichment method thereof and application of efficient cyanogen-reducing bacteria in degradation of complex cyanogen-containing wastewater |
| CN116986731A (en) * | 2023-09-25 | 2023-11-03 | 长春黄金研究院有限公司 | Biological strengthening treatment method for waste water containing arsenic and ammonia nitrogen in gold industry |
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2017
- 2017-11-28 CN CN201721616989.4U patent/CN207986811U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107963719A (en) * | 2017-11-28 | 2018-04-27 | 贵州锦丰矿业有限公司 | A kind of processing unit and method of high concentration rhodanate waste water |
| CN115895994A (en) * | 2022-12-23 | 2023-04-04 | 东北大学 | Efficient cyanogen-reducing bacteria, enrichment method thereof and application of efficient cyanogen-reducing bacteria in degradation of complex cyanogen-containing wastewater |
| CN116986731A (en) * | 2023-09-25 | 2023-11-03 | 长春黄金研究院有限公司 | Biological strengthening treatment method for waste water containing arsenic and ammonia nitrogen in gold industry |
| CN116986731B (en) * | 2023-09-25 | 2024-01-05 | 长春黄金研究院有限公司 | Biological strengthening treatment method for waste water containing arsenic and ammonia nitrogen in gold industry |
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