CN105084558A - Method for treating high-salt wastewater by using halophilic microorganisms - Google Patents
Method for treating high-salt wastewater by using halophilic microorganisms Download PDFInfo
- Publication number
- CN105084558A CN105084558A CN201510576214.8A CN201510576214A CN105084558A CN 105084558 A CN105084558 A CN 105084558A CN 201510576214 A CN201510576214 A CN 201510576214A CN 105084558 A CN105084558 A CN 105084558A
- Authority
- CN
- China
- Prior art keywords
- halophile
- salt
- salt wastewater
- flora
- biochemical system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention provides a method for treating high-salt wastewater by using halophilic microorganisms. The halophilic microorganisms can adapt to a high-salt environment to perform normal growth metabolism, and comprise haloduric and halophilic bacteria, yeasts, archaea and microfauna. The method for treating the high-salt wastewater by using the halophilic microorganisms comprises the following steps: adding a halophilic microbial flora into a biochemical system; performing mixed culture on the halophilic microbial flora in an influent salt concentration range of 1-25% to improve the pollution degradation capability of the halophilic microbial flora and obtain a halophilic microbial aggregate with good mud-water separation performance and precipitation performance, such as active sludge and a biomembrane; and stabilizing the process parameters and influent water quality of the biochemical system to ensure that the biochemical effluent reaches a standard or meets design requirements. By adopting the method provided by the invention, the high-salt wastewater with the influent salt concentration of 1-25% of the biochemical system can be subjected to biochemical treatment, and the halophilic microbial agent only needs to be added once, so that the investment and operation costs can be reduced.
Description
Technical field
The invention belongs to high-salt wastewater processing technology field, specifically utilize the method for halophile process high-salt wastewater.
Background technology
Treatment method for high-salinity wastewater mainly comprises physical chemistry method, biochemical method and combination process thereof.Physical chemistry method comprises evaporation, membrane sepn, ion-exchange, advanced oxidation, electrolysis etc., and no matter how advanced these technology are, and its roadmap is all mainly the inorganic salt be first separated in waste water, and then makes the wastewater treatment after desalination or dilution up to standard; Therefore, its cost of investment and running cost are all very high, and mother liquid evaporation, solid salt, reverse osmosis concentrated liquid etc. that desalination produces belong to solid waste or dangerous solid waste.Although the running cost of biochemical method process high-salt wastewater is lower, because inorganic salt in high-salt wastewater are to the murder by poisoning of common micro-organisms cell, restraining effect, biochemical processing is made to be difficult to obtain large-scale application in high-salt wastewater process.
Current high-salt wastewater biochemical processing method mainly comprises: salinity domestication, dilution is biochemical, the selection tolerance of salinity is high biochemical process, inoculation halophilic bacterium enhance biological treatment.Salinity domestication ordinary activated sludge can make it obtain certain salt resistance ability, but the salt resistance ability relying on domestication to obtain is very limited, is generally no more than 3.5%, is the highlyest no more than 5%; And the active sludge salt resistance ability that domestication obtains is unstable, anti-salinity shock ability; Its technological deficiency also comprises: the domestication time is long, under hypersaline environment, processing efficiency declines, water outlet is muddy, sludge settling is poor, impact rear salt resistance ability by fresh water easily loses.First dilute again and biochemical high salt concentration can be avoided the suppression of microorganism and toxic action, but wastewater treatment investment and working cost all increase, be only applicable to the water yield little and have other less salt wastewater source to carry out the situation of diluting.Although biomembrance process specific activity sludge has stronger salt resistance ability and anti-salinity shock ability, its processing efficiency of common biomembrane process of halophilic bacterium is not utilized to decline with the increase of water inlet salt concn.Inoculation halophilic bacterium, can strengthen the effect of common biochemical system to high-salt wastewater process, but the procurement cost passing through the steps such as enrichment, screening, separation, qualification, fermentation culture due to halophilic bacterium is higher, makes it only based on laboratory study.
Summary of the invention
The problem to be solved in the present invention is the defect for existing high-salt wastewater biochemical processing, sets about from the microorganism affecting high-salt wastewater Biochemical Treatment and stability, provides a kind of method utilizing halophile process high-salt wastewater newly.
Indication halophile of the present invention, refers to and adapts to hypersaline environment and can in the microorganism of normal growth metabolism under hypersaline environment, comprises addicted to the bacterium of salt and salt tolerant, fungi, ancient bacterium, protozoon, metazoan and other microorganism.
Principle of the present invention and thinking are:
The degraded of wastewater biochemical treating processes pollutent and remove and be that microorganism carries out growth metabolism using the organic pollutant of waste water as carbon source and the energy and different types of microorganisms cooperates mutually, the synthesis result acted on such as to vie each other.Therefore, analyze from the standpoint of efficiency of microbiological treatment waste water, only can adapt to the microorganism that hypersaline environment also can carry out normal growth metabolism in hypersaline environment, i.e. halophile, just can ensure the high efficiency of high-salt wastewater biochemical treatment.Specific to a certain kind addicted to salt or salt-durable microbe, its salt concentration range that can survive and from can normal growth metabolism and uncontrolled salt concentration range is different, and often the scope of the latter is much narrower than the former; And the salt concentration range of actual waste water often changes greatly, thus single kind or a few halophile are difficult to the stability ensureing high-salt wastewater Biochemical Treatment.Therefore, solving the practical fundamental way of high-salt wastewater biochemical processing is obtaining salt tolerant and the halophilic microorganism of enough kinds, build a microbial ecosystem, then to this, there is the microbial ecosystem enriching species diversity and carry out Appropriate application, maintain it to the high efficiency of high-salt wastewater biochemical treatment and stability, and reduce wastewater treatment running cost as far as possible.
The technical problem to be solved in the present invention is achieved through the following technical solutions.The present invention is a kind of method utilizing halophile process high-salt wastewater, comprises the following steps:
(1) adding in biochemical system can the halophile flora of degradation of contaminant;
(2) described biochemical system carries out mixed culture to halophile flora in 1% ~ 25% salt concentration range, until there is mud-water separation microbial aggregate of good performance in system;
(3) described biochemical system adds high-salt wastewater, and when intake salt concn 1% ~ 25% and stable, the contaminant degradation ability of halophile flora is tamed;
(4) stablize biochemical system influent quality, adjustment is optimized to biochemical process parameter, until bio-chemical effluent water quality reaching standard or reach design requirements.Aforementioned biochemical process parameter is optimized adjustment and or can reaches design requirements and adjust by prior art according to bio-chemical effluent water quality reaching standard, thus realizes bio-chemical effluent water quality reaching standard or reach design requirements.
Of the present inventionly a kind ofly to utilize in the technical scheme of the method for halophile process high-salt wastewater, preferred technical scheme or technical characteristic are:
In technical solution of the present invention, pending high-salt wastewater need possess certain biodegradability, and generally B/C is not less than 0.3, or adopts pre-treatment to make its B/C > 0.3.
In technical solution of the present invention, pending high-salt wastewater CODcr should not be too high, otherwise should carry out pre-treatment, makes halophile biochemical treatment system influent COD
crbe no more than 10000mg/L.
In technical solution of the present invention, the halophile flora added, halophile bacterium of the present invention or flora can be applicable to for any one disclosed in prior art, preferably according to number of patent application for the method disclosed in CN201310540099.X prepares.This invention contriver, patent right are identical with the present invention per capita, therefore quote at this.
In technical solution of the present invention, halophile flora initially add concentration, should be conducive to halophile flora and form microbial aggregate by mixed culture, its concentration is preferably not less than 200mg/L, and the relatively high quick formation initially adding concentration and be conducive to halophile aggregate.
In technical solution of the present invention, halophile flora according to the salt concn of pending high-salt wastewater, should carry out selectivity according to following principle and adds:
1. when high-salt wastewater average salinity is in 1% ~ 3% scope, the halophile flora obtained in 1% ~ 3% salt concentration range is selected.
2. when high-salt wastewater average salinity is in 3% ~ 12% scope, the halophile flora obtained in 3% ~ 12% salt concentration range is selected.
3. when high-salt wastewater average salinity is in 12% ~ 17% scope, the halophile flora obtained in 12% ~ 17% salt concentration range is selected.
4. when high-salt wastewater average salinity is in 17% ~ 25% scope, the halophile flora obtained in 17% ~ 25% salt concentration range is selected.
In technical solution of the present invention, relatively stable being conducive to controlling water inlet salt concn at utmost plays the degradation effect of halophile to Pollutants in Wastewater.Two fundamental principles that salt concn controls are:
1. the salt concn of halophile flora mixed culture and waste water salt concn are consistent;
2. the salt concn variation range of intaking be no more than pending high-salt wastewater salt concn mean value ± 20%.
In technical solution of the present invention, biochemical system water temperature, preferably according to practical situation, controls at 5 ~ 15 DEG C, 15 ~ 40 DEG C or 40 ~ 55 DEG C.
In technical solution of the present invention, biochemical system pH, controls in 6.0 ~ 9.0 scopes needed for general biochemistry.
In technical solution of the present invention, the high-salt wastewater that biochemical system process is different, has different technological design forms.Consider from stable influent quality and water inlet salt concn, biochemical system is designed to multistage or the multi-stage biochemical system of one or more biochemical reactors (pond) serial or parallel connection composition, adopt single-point or multipoint water feeding mode, water inlet salt concn can be reduced to the impact of biochemical system.Biochemical process in single reactor can be aerobic, anoxic, micro-oxygen, acidication, anaerobism and other, thus form multi-form combination biochemical processing process.
In technical solution of the present invention, in biochemical system, in single reactor, dissolved oxygen, according to technique needs, can be controlled in 2.0 ~ 4.0mg/L, 1.0 ~ 2.0mg/L, 0.5 ~ 1.0mg/L, 0.1 ~ 0.5mg/L or is less than 0.1mg/L.
In technical solution of the present invention, the microbial aggregate that halophile flora mixed culture is formed, includes but not limited to active sludge, microbial film, granule sludge and other form.
In technical solution of the present invention, the load of halophile process high-salt wastewater, under biochemical system different reactor, different technology conditions, should be different.According to the biochemical process adopted in waste water quality and single reactor, in single reactor, microbial load is 0.50 ~ 1.00kgCOD
cr/ (kgMLSSd), 0.20 ~ 0.50kgCOD
cr/ (kgMLSSd) or 0.20kgCOD
cr/ (kgMLSSd) below.
Adopt the inventive method, total salt 1% ~ 25%, COD
cr< 20000mg/L and the high-salt wastewater of B/C > 0.3 can directly carry out biochemical treatment even processes up to standard.
Compared with prior art, beneficial effect of the present invention:
(1) adopt the inventive method, biochemical treatment can be carried out to the high-salt wastewater that total salt is up to 25%, greatly expand the salt tolerant upper limit of concentration of biochemical method process waste water.
(2) adopt the inventive method, high-salt wastewater processing cost can be down to 0.5 ~ 5 yuan/ton; And existing high-salt wastewater processing cost is generally more than 40 yuan/ton.
(3) adopt the inventive method, high-salt wastewater directly can carry out Start-up and Adjustment under waste water salt concn, shortens debugging cycle.Existing high-salt wastewater treatment system.
Embodiment
Below further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not form the restriction to its right.
Embodiment 1, a kind of method utilizing halophile process high-salt wastewater, comprises the following steps:
(1) in biochemical system, halophile flora is added;
(2) described biochemical system carries out mixed culture to halophile flora in 1% ~ 25% salt concentration range, until there is mud-water separation microbial aggregate of good performance in system;
(3) described biochemical system adds high-salt wastewater, and when intake salt concn 1% ~ 25% and stable, the contaminant degradation ability of halophile flora is tamed;
(4) stablize biochemical system influent quality, adjustment is optimized to biochemical process parameter, until bio-chemical effluent water quality reaching standard or reach design requirements.
Described high-salt wastewater B/C > 0.3, or make its B/C > 0.3 after pretreatment; Described high-salt wastewater COD
cr< 20000mg/L.Described halophile flora, be according to number of patent application for the method disclosed in CN201310540099.X prepare or for prior art disclosed in halophile flora.Described halophile flora the concentration that initially adds be not less than 200mg/L.Described halophile flora, according to the average salinity of high-salt wastewater, select according to following principle:
(1) when high-salt wastewater average salinity is in 1% ~ 3% scope, the halophile flora obtained in 1% ~ 3% salt concentration range is selected;
(2) when high-salt wastewater average salinity is in 3% ~ 12% scope, the halophile flora obtained in 3% ~ 12% salt concentration range is selected;
(3) when high-salt wastewater average salinity is in 12% ~ 17% scope, the halophile flora obtained in 12% ~ 17% salt concentration range is selected;
(4) when high-salt wastewater average salinity is in 17% ~ 25% scope, the halophile flora obtained in 17% ~ 25% salt concentration range is selected.
Salt concn and the high-salt wastewater salt concn of step (3) halophile flora mixed culture are consistent.By amount of inlet water water quality regulation, guarantee into water salt concn variation range be no more than described high-salt wastewater average salinity ± 20%.Described biochemical system water temperature is 5 ~ 15 DEG C, 15 ~ 40 DEG C or 40 ~ 55 DEG C.Described biochemical system pH6.0 ~ 9.0; Described biochemical system is by one or more reactors in series or compose in parallel.In described biochemical system, the technique of single reactor is aerobic, anoxic, micro-oxygen, acidication or anaerobism.Described biochemical system or single reactor adopt single-point or multipoint water feeding mode.In described biochemical system, in single reactor, dissolved oxygen is 2.0 ~ 4.0mg/L, 1.0 ~ 2.0mg/L, 0.5 ~ 1.0mg/L, 0.1 ~ 0.5mg/L or is less than 0.1mg/L.The aggregate that the described halophile flora of step (2) is formed, comprises suitable salt active sludge, halophile organism film, suitable salt particle mud or and other form.The organic loading of halophile microflora degradation pollutent is 0.50 ~ 1.00kgCOD/ (kgMLSSd), 0.20 ~ 0.50kgCOD/ (kgMLSSd), 0.1 ~ 0.20kgCOD/ (kgMLSSd) or be less than 0.10kgCOD/ (kgMLSSd).
Embodiment 2, a kind of method utilizing halophile process high-salt wastewater: the high-salt wastewater mean salt amount 1.5 ~ 2%NaCl of the present embodiment, COD2000 ~ 5000mg/L, B/C=0.42.Utilize the method for this high-salt wastewater of halophile process, comprise the following steps:
(1) in biochemical system, halophile flora is added;
(2) described biochemical system carries out mixed culture to halophile flora in 1% ~ 3% salt concentration range, until there is mud-water separation microbial aggregate of good performance in system;
(3) described biochemical system adds high-salt wastewater, and when intake salt concn 1% ~ 25% and stable, the contaminant degradation ability of halophile flora is tamed;
(4) stablize biochemical system influent quality, adjustment is optimized to biochemical process parameter, until bio-chemical effluent water quality reaching standard or reach design requirements.
The halophile flora added, according to number of patent application for the method disclosed in CN201310540099.X prepares, and can be prepared in 1% ~ 3% salt concentration range.
Halophile flora initially adds concentration 500mg/L.
Salt concn and the high-salt wastewater salt concn of halophile flora mixed culture are consistent, and are 1.5% ~ 2.0%.
Biochemical system adopts acidication+aerobic process, controls water temperature 20 ~ 30 DEG C, pH6.0 ~ 7.5, acidication sludge loading 0.1 ~ 0.2kgCOD/ (kgMLSSd), aerobic sludge load 0.2 ~ 0.3kgCOD/ (kgMLSSd).
Embodiment 3, a kind of method utilizing halophile process high-salt wastewater: the high-salt wastewater saltiness 4% ~ 5%CaCl of the present embodiment
2, COD≤1500mg/L, B/C=0.35.Utilize the method for this high-salt wastewater of halophile process, comprise the following steps:
(1) in biochemical system, halophile flora is added;
(2) described biochemical system carries out mixed culture to halophile flora in 4% ~ 5% salt concentration range, until there is mud-water separation microbial aggregate of good performance in system;
(3) described biochemical system adds high-salt wastewater, and when intake salt concn 4% ~ 5% and stable, the contaminant degradation ability of halophile flora is tamed;
(4) stablize biochemical system influent quality, adjustment is optimized to biochemical process parameter, until bio-chemical effluent water quality reaching standard or reach design requirements.
The halophile flora added, according to number of patent application for the method disclosed in CN201310540099.X prepares, and can be prepared in 3% ~ 12% salt concentration range.
Halophile flora initially adds concentration 2000mg/L.
Salt concn and the high-salt wastewater salt concn of halophile flora mixed culture are consistent, and are 4% ~ 5%.
Biochemical system adopts aerobic+contact oxidation technology, controls water temperature 30 ~ 40 DEG C, pH6.0 ~ 7.0, one-level A/O sludge loading 0.1 ~ 0.2kgCOD/ (kgMLSSd), secondary A/O sludge loading 0.05 ~ 0.1kgCOD/ (kgMLSSd).
Embodiment 4, a kind of method utilizing halophile process high-salt wastewater: the high-salt wastewater saltiness 5% ~ 15%Na of the present embodiment
2sO
4, COD4000 ~ 6000mg/L, B/C=0.55.Utilize the method for this high-salt wastewater of halophile process, comprise the following steps:
(1) in biochemical system, halophile flora is added;
(2) described biochemical system carries out mixed culture to halophile flora in 8% ~ 10% salt concentration range, until there is mud-water separation microbial aggregate of good performance in system;
(3) described biochemical system adds high-salt wastewater, and when intake salt concn 8% ~ 10% and stable, the contaminant degradation ability of halophile flora is tamed;
(4) stablize biochemical system influent quality, adjustment is optimized to biochemical process parameter, until bio-chemical effluent water quality reaching standard or reach design requirements.
The suitable water inlet residence time is set, makes to be stabilized in 8% ~ 10% scope into water salt concn.
The halophile flora added, according to number of patent application for the method disclosed in CN201310540099.X prepares, and can be prepared in 6% ~ 12% salt concentration range.
Halophile flora initially adds concentration 1000mg/L.
The salt concn of halophile flora mixed culture is 8% ~ 10%.
Biochemical system adopts anaerobic hydrolysis+two-stage aerobic technique, control water temperature 25 ~ 35 DEG C, pH6.5 ~ 8.5, anaerobic hydrolysis sludge loading 0.3 ~ 0.5kgCOD/ (kgMLSSd), one-level aerobic process sludge loading 0.2 ~ 0.4kgCOD/ (kgMLSSd), secondary aerobic process sludge loading is 0.05 ~ 0.1kgCOD/ (kgMLSSd).
Embodiment 5, a kind of method utilizing halophile process high-salt wastewater: the high-salt wastewater saltiness 5% ~ 7%NaCl of the present embodiment, COD30000 ~ 50000mg/L, B/C=0.16.Adopt light electrolysis-Fenton oxidation as pretreatment technology, processed waste water COD is 10000 ~ 20000mg/L, B/C=0.32.
Utilize the method for this high-salt wastewater of halophile process, comprise the following steps:
(1) in biochemical system, halophile flora is added;
(2) described biochemical system carries out mixed culture to halophile flora in 5% ~ 7% salt concentration range, until there is mud-water separation microbial aggregate of good performance in system;
(3) described biochemical system adds high-salt wastewater, and when intake salt concn 5% ~ 7% and stable, the contaminant degradation ability of halophile flora is tamed;
(4) stablize biochemical system influent quality, adjustment is optimized to biochemical process parameter, until bio-chemical effluent water quality reaching standard or reach design requirements.
The suitable water inlet residence time is set, makes to be stabilized in 5% ~ 7% scope into water salt concn.
The halophile flora added, according to number of patent application for the method disclosed in CN201310540099.X prepares, and can be prepared in 3% ~ 12% salt concentration range.
Halophile flora initially adds concentration 800mg/L.
The salt concn of halophile flora mixed culture is 8% ~ 10%.
Biochemical system adopts anaerobic hydrolysis+micro-oxygen+aerobic+contact oxidation technology, control water temperature 25 ~ 35 DEG C, pH6.5 ~ 8.5, anaerobic hydrolysis sludge loading 0.2 ~ 0.4kgCOD/ (kgMLSSd), micro-oxygen process sludge load 0.5 ~ 1.0kgCOD/ (kgMLSSd), aerobic process sludge loading 0.2 ~ 0.4kgCOD/ (kgMLSSd), contact oxidation technology sludge loading 0.05 ~ 0.1kgCOD/ (kgMLSSd).
Embodiment 6, a kind of method utilizing halophile process high-salt wastewater: the high-salt wastewater saltiness 20% ~ 23%NaCl of the present embodiment, COD3000 ~ 5000mg/L, B/C=0.42.
Utilize the method for this high-salt wastewater of halophile process, comprise the following steps:
(1) in biochemical system, halophile flora is added;
(2) described biochemical system carries out mixed culture to halophile flora in 20% ~ 23% salt concentration range, until there is mud-water separation microbial aggregate of good performance in system;
(3) described biochemical system adds high-salt wastewater, and when intake salt concn 20% ~ 23% and stable, the contaminant degradation ability of halophile flora is tamed;
(4) stablize biochemical system influent quality, adjustment is optimized to biochemical process parameter, until bio-chemical effluent water quality reaching standard or reach design requirements.
The suitable water inlet residence time is set, makes to be stabilized in 20% ~ 23% scope into water salt concn.
The halophile flora added, according to number of patent application for the method disclosed in CN201310540099.X prepares, and can be prepared in 17% ~ 25% salt concentration range.
Halophile flora initially adds concentration 2000mg/L.
The salt concn of halophile flora mixed culture is 20%.
Biochemical system adopts two-stage aerobic technique, controls water temperature 25 ~ 35 DEG C, pH8.0 ~ 8.5, one-level aerobic process sludge loading 0.2 ~ 0.3kgCOD/ (kgMLSSd), secondary aerobic process sludge loading 0.05 ~ 0.1kgCOD/ (kgMLSSd).
Embodiment 7, a kind of method utilizing halophile process high-salt wastewater: the high-salt wastewater saltiness 4% ~ 5%CaCl of the present embodiment
2, COD≤1500mg/L, B/C=0.35.Utilize the method for this high-salt wastewater of halophile process, comprise the following steps:
(1) in biochemical system, halophile flora is added;
(2) described biochemical system carries out mixed culture to halophile flora in 4% ~ 5% salt concentration range, until there is mud-water separation microbial aggregate of good performance in system;
(3) described biochemical system adds high-salt wastewater, and when intake salt concn 4% ~ 5% and stable, the contaminant degradation ability of halophile flora is tamed;
(4) stablize biochemical system influent quality, adjustment is optimized to biochemical process parameter, until bio-chemical effluent water quality reaching standard or reach design requirements.
The halophile flora added, according to number of patent application for the method disclosed in CN201310540099.X prepares, and can be prepared in 3% ~ 12% salt concentration range.
Halophile flora initially adds concentration 2000mg/L.
Salt concn and the high-salt wastewater salt concn of halophile flora mixed culture are consistent, and are 4% ~ 5%.
Biochemical system adopts aerobic+contact oxidation technology, controls water temperature 45 ~ 55 DEG C, pH6.0 ~ 7.2, one-level A/O sludge loading 0.1 ~ 0.2kgCOD/ (kgMLSSd), secondary A/O sludge loading 0.05 ~ 0.1kgCOD/ (kgMLSSd).
Embodiment 8, a kind of method utilizing halophile process high-salt wastewater: the high-salt wastewater saltiness 12% ~ 15%NaCl of the present embodiment, COD20000 ~ 25000mg/L, B/C=0.35.Adopt light electrolysis as pre-treatment, process water outlet COD12000 ~ 15000mg/L.
Utilize the method for this high-salt wastewater of halophile process, comprise the following steps:
(1) in biochemical system, halophile flora is added;
(2) described biochemical system carries out mixed culture to halophile flora in 13% ~ 14% salt concentration range, until there is mud-water separation microbial aggregate of good performance in system;
(3) described biochemical system adds high-salt wastewater, and when intake salt concn 13% ~ 14% and stable, the contaminant degradation ability of halophile flora is tamed;
(4) stablize biochemical system influent quality, adjustment is optimized to biochemical process parameter, until bio-chemical effluent water quality reaching standard or reach design requirements.
The suitable water inlet residence time is set, makes to be stabilized in 13% ~ 14% scope into water salt concn.
The halophile flora added, according to number of patent application for the method disclosed in CN201310540099.X prepares, and can be prepared in 12% ~ 17% salt concentration range.
Halophile flora initially adds concentration 2000mg/L.
Salt concn and the high-salt wastewater salt concn of halophile flora mixed culture are consistent, and are 13% ~ 14%.
Biochemical system adopts anaerobic hydrolysis+micro-oxygen+aerobic+contact oxidation technology, control water temperature 25 ~ 35 DEG C, pH8.0 ~ 9.0, anaerobic hydrolysis sludge loading 0.2 ~ 0.4kgCOD/ (kgMLSSd), micro-oxygen process sludge load 0.3 ~ 0.5kgCOD/ (kgMLSSd), aerobic process sludge loading 0.1 ~ 0.2kgCOD/ (kgMLSSd), contact oxidation technology sludge loading 0.05 ~ 0.1kgCOD/ (kgMLSSd).
Embodiment 9, a kind of method utilizing halophile process high-salt wastewater: the high-salt wastewater mean salt amount 2.0 ~ 4.0%NaCl of the present embodiment, COD500 ~ 1000mg/L, B/C=0.25.Adopt flocculation as pretreatment technology, water outlet COD280 ~ 560mg/L, B/C=0.41 after process.
Utilize the method for this high-salt wastewater of halophile process, comprise the following steps:
(1) in biochemical system, halophile flora is added;
(2) described biochemical system carries out mixed culture to halophile flora in 2.5% ~ 3.5% salt concentration range, until there is mud-water separation microbial aggregate of good performance in system;
(3) described biochemical system adds high-salt wastewater, and when intake salt concn 2.5% ~ 3.5% and stable, the contaminant degradation ability of halophile flora is tamed;
(4) stablize biochemical system influent quality, adjustment is optimized to biochemical process parameter, until bio-chemical effluent water quality reaching standard or reach design requirements.
The suitable water inlet residence time is set, makes to be stabilized in 2.5% ~ 3.5% scope into water salt concn.
The halophile flora added, according to number of patent application for the method disclosed in CN201310540099.X prepares, and can be prepared in 1% ~ 3% salt concentration range.
Halophile flora initially adds concentration 500mg/L.
Salt concn and the high-salt wastewater salt concn of halophile flora mixed culture are consistent, and are 3.0% ~ 3.5%.
Biochemical system adopts acidication+aerobic (catalytic oxidation) technique, control water temperature 5 ~ 15 DEG C, pH6.0 ~ 7.5, acidication process sludge load 0.1 ~ 0.2kgCOD/ (kgMLSSd), aerobic process sludge loading 0.05 ~ 0.10kgCOD/ (kgMLSSd).
Embodiment 10, a kind of method utilizing halophile process high-salt wastewater: the high-salt wastewater saltiness 3 ~ 6%NaCl of the present embodiment, COD≤6000mg/L, B/C=0.35.Utilize the method for this high-salt wastewater of halophile process, comprise the following steps:
(1) in biochemical system, halophile flora is added;
(2) described biochemical system carries out mixed culture to halophile flora in 4% ~ 5% salt concentration range, until there is mud-water separation microbial aggregate of good performance in system;
(3) described biochemical system adds high-salt wastewater, and when intake salt concn 4% ~ 5% and stable, the contaminant degradation ability of halophile flora is tamed;
(4) stablize biochemical system influent quality, adjustment is optimized to biochemical process parameter, until bio-chemical effluent water quality reaching standard or reach design requirements.
The suitable water inlet residence time is set, makes to be stabilized in 4% ~ 5% scope into water salt concn.
The halophile flora added, according to number of patent application for the method disclosed in CN201310540099.X prepares, and can be prepared in 3% ~ 12% salt concentration range.
Halophile flora initially adds concentration 1000mg/L.
Salt concn and the high-salt wastewater salt concn of halophile flora mixed culture are consistent, and are 4% ~ 5%.
Biochemical system adopts anaerobic hydrolysis+two-stage A/O technique, controls water temperature 15 ~ 40 DEG C, pH6.0 ~ 9.0, one-level A/O sludge loading 0.2 ~ 0.3kgCOD/ (kgMLSSd), secondary A/O sludge loading 0.1 ~ 0.2kgCOD/ (kgMLSSd).
Claims (16)
1. utilize a method for halophile process high-salt wastewater, it is characterized in that: comprise the following steps:
(1) in biochemical system, halophile flora is added;
(2) described biochemical system carries out mixed culture to halophile flora in 1% ~ 25% salt concentration range, until there is mud-water separation microbial aggregate of good performance in system;
(3) described biochemical system adds high-salt wastewater, and when intake salt concn 1% ~ 25% and stable, the contaminant degradation ability of halophile flora is tamed;
(4) stablize biochemical system influent quality, adjustment is optimized to biochemical process parameter, until bio-chemical effluent water quality reaching standard or reach design requirements.
2. a kind of method utilizing halophile process high-salt wastewater according to claim 1, is characterized in that: described high-salt wastewater B/C > 0.3, or makes its B/C > 0.3 after pretreatment.
3. a kind of method utilizing halophile process high-salt wastewater according to claim 1, is characterized in that: described high-salt wastewater COD
cr< 20000mg/L.
4. a kind of method utilizing halophile process high-salt wastewater according to claim 1 or 2 or 3, is characterized in that: described halophile flora, is for the method disclosed in CN201310540099.X prepares according to number of patent application.
5. a kind of method utilizing halophile process high-salt wastewater according to claim 1, is characterized in that: described halophile flora the concentration that initially adds be not less than 200mg/L.
6. a kind of method utilizing halophile process high-salt wastewater according to claim 1, is characterized in that: described halophile flora, according to the average salinity of high-salt wastewater, selects according to following principle:
(1) when high-salt wastewater average salinity is in 1% ~ 3% scope, the halophile flora obtained in 1% ~ 3% salt concentration range is selected;
(2) when high-salt wastewater average salinity is in 3% ~ 12% scope, the halophile flora obtained in 3% ~ 12% salt concentration range is selected;
(3) when high-salt wastewater average salinity is in 12% ~ 17% scope, the halophile flora obtained in 12% ~ 17% salt concentration range is selected;
(4) when high-salt wastewater average salinity is in 17% ~ 25% scope, the halophile flora obtained in 17% ~ 25% salt concentration range is selected.
7. a kind of method utilizing halophile process high-salt wastewater according to claim 1, is characterized in that: salt concn and the high-salt wastewater salt concn of step (3) halophile flora mixed culture are consistent.
8. a kind of method utilizing halophile process high-salt wastewater according to claim 1, is characterized in that: by amount of inlet water water quality regulation, guarantee into water salt concn variation range be no more than described high-salt wastewater average salinity ± 20%.
9. a kind of method utilizing halophile process high-salt wastewater according to claim 1, is characterized in that: described biochemical system water temperature is 5 ~ 15 DEG C, 15 ~ 40 DEG C or 40 ~ 55 DEG C.
10. a kind of method utilizing halophile process high-salt wastewater according to claim 1, is characterized in that: described biochemical system pH6.0 ~ 9.0.
11. a kind of methods utilizing halophile process high-salt wastewater according to claim 1, is characterized in that: described biochemical system is by one or more reactors in series or compose in parallel.
12., according to the method utilizing halophile process high-salt wastewater a kind of described in claim 11, is characterized in that: in described biochemical system, the technique of single reactor is aerobic, anoxic, micro-oxygen, acidication or anaerobism.
13. according to claim 1 or 11 a kind of method utilizing halophile process high-salt wastewater, it is characterized in that: described biochemical system or single reactor adopt single-point or multipoint water feeding mode.
14., according to the method utilizing halophile process high-salt wastewater a kind of described in claim 11, is characterized in that: in described biochemical system, in single reactor, dissolved oxygen is 2.0 ~ 4.0mg/L, 1.0 ~ 2.0mg/L, 0.5 ~ 1.0mg/L, 0.1 ~ 0.5mg/L or is less than 0.1mg/L.
15. a kind of methods utilizing halophile process high-salt wastewater according to claim 1, it is characterized in that: the aggregate that the described halophile flora of step (2) is formed, comprise suitable salt active sludge, halophile organism film, suitable salt particle mud or and other form.
16. a kind of methods utilizing halophile process high-salt wastewater according to claim 1, is characterized in that: the organic loading of halophile microflora degradation pollutent is 0.50 ~ 1.00kgCOD/ (kgMLSSd), 0.20 ~ 0.50kgCOD/ (kgMLSSd), 0.1 ~ 0.20kgCOD/ (kgMLSSd) or be less than 0.10kgCOD/ (kgMLSSd).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576214.8A CN105084558A (en) | 2015-09-11 | 2015-09-11 | Method for treating high-salt wastewater by using halophilic microorganisms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576214.8A CN105084558A (en) | 2015-09-11 | 2015-09-11 | Method for treating high-salt wastewater by using halophilic microorganisms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105084558A true CN105084558A (en) | 2015-11-25 |
Family
ID=54566009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510576214.8A Pending CN105084558A (en) | 2015-09-11 | 2015-09-11 | Method for treating high-salt wastewater by using halophilic microorganisms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105084558A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650676A (en) * | 2019-02-01 | 2019-04-19 | 北京朗新明环保科技有限公司 | A method of waste water of mine is handled in Cold injury syndrome area |
| CN109928505A (en) * | 2019-03-15 | 2019-06-25 | 江苏大学 | A method of pickling waste water is handled using salt algae, Halophiles |
| CN111377544A (en) * | 2018-12-29 | 2020-07-07 | 中蓝连海设计研究院有限公司 | High-salinity wastewater treatment process utilizing halophilic bacteria YL5-2 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306881A (en) * | 2008-06-30 | 2008-11-19 | 桂林工学院 | Process for fixedly treating high-salinity oil extraction waste water by embedding mixed strains |
| CN101691547A (en) * | 2009-09-29 | 2010-04-07 | 西安建筑科技大学 | Method for restoring micro-scale polluted reservoir water by using situ bio-contact oxidation |
| CN101768564A (en) * | 2010-02-09 | 2010-07-07 | 北京航空航天大学 | Preparation of efficient phenol-degrading halophilic bacteria and application thereof |
| CN102604874A (en) * | 2012-04-02 | 2012-07-25 | 常州亚环环保科技有限公司 | Cultivation method for halophilic bacteria capable of efficiently degrading high-salinity wastewater phenol and application method of halophilic bacteria |
| CN102776125A (en) * | 2012-07-06 | 2012-11-14 | 华东理工大学 | Construction method of moderate halophilic bacteria consortium capable of degrading high-salinity benzene series and application of moderate halophilic bacteria consortium |
| CN103183455A (en) * | 2013-04-11 | 2013-07-03 | 中蓝连海设计研究院 | Device and method for biologically denitrifying wastewater with high salinity |
| CN103540555A (en) * | 2013-11-05 | 2014-01-29 | 中蓝连海设计研究院 | Method for preparing salt-tolerant microbial agent |
| CN104609542A (en) * | 2013-11-05 | 2015-05-13 | 中蓝连海设计研究院 | Method for culturing salt-tolerant aerobic activated sludge |
-
2015
- 2015-09-11 CN CN201510576214.8A patent/CN105084558A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306881A (en) * | 2008-06-30 | 2008-11-19 | 桂林工学院 | Process for fixedly treating high-salinity oil extraction waste water by embedding mixed strains |
| CN101691547A (en) * | 2009-09-29 | 2010-04-07 | 西安建筑科技大学 | Method for restoring micro-scale polluted reservoir water by using situ bio-contact oxidation |
| CN101768564A (en) * | 2010-02-09 | 2010-07-07 | 北京航空航天大学 | Preparation of efficient phenol-degrading halophilic bacteria and application thereof |
| CN102604874A (en) * | 2012-04-02 | 2012-07-25 | 常州亚环环保科技有限公司 | Cultivation method for halophilic bacteria capable of efficiently degrading high-salinity wastewater phenol and application method of halophilic bacteria |
| CN102776125A (en) * | 2012-07-06 | 2012-11-14 | 华东理工大学 | Construction method of moderate halophilic bacteria consortium capable of degrading high-salinity benzene series and application of moderate halophilic bacteria consortium |
| CN103183455A (en) * | 2013-04-11 | 2013-07-03 | 中蓝连海设计研究院 | Device and method for biologically denitrifying wastewater with high salinity |
| CN103540555A (en) * | 2013-11-05 | 2014-01-29 | 中蓝连海设计研究院 | Method for preparing salt-tolerant microbial agent |
| CN104609542A (en) * | 2013-11-05 | 2015-05-13 | 中蓝连海设计研究院 | Method for culturing salt-tolerant aerobic activated sludge |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111377544A (en) * | 2018-12-29 | 2020-07-07 | 中蓝连海设计研究院有限公司 | High-salinity wastewater treatment process utilizing halophilic bacteria YL5-2 |
| CN111377544B (en) * | 2018-12-29 | 2021-12-31 | 中蓝连海设计研究院有限公司 | High-salinity wastewater treatment process utilizing halophilic bacteria YL5-2 |
| CN109650676A (en) * | 2019-02-01 | 2019-04-19 | 北京朗新明环保科技有限公司 | A method of waste water of mine is handled in Cold injury syndrome area |
| CN109928505A (en) * | 2019-03-15 | 2019-06-25 | 江苏大学 | A method of pickling waste water is handled using salt algae, Halophiles |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Rahimi et al. | Technologies for biological removal and recovery of nitrogen from wastewater | |
| CN103011526B (en) | Method for treating erythromycin thiocyanate wastewater | |
| CN103910475B (en) | A kind of method of salt tolerant activated sludge acclimatization | |
| Rodrigues et al. | Combination of chemical coagulation, photo-Fenton oxidation and biodegradation for the treatment of vinasse from sugar cane ethanol distillery | |
| CN101659500A (en) | Dye waste water treatment system | |
| CN101654314A (en) | Dye waste water treatment method | |
| CN103232145A (en) | Method for degrading ammonia nitrogen in high-salinity sewage by microbes | |
| CN104058548A (en) | Denitrification, desalination and recycling process of stainless steel cold rolling acidic waste water | |
| CN102863117B (en) | Process for treating high concentrated organic wastewater | |
| CN105084524A (en) | Combined microbiological treatment method for high-concentration salt-containing organic wastewater | |
| CN112537883A (en) | Coupled high-salinity wastewater recycling treatment process for pickled mustard tuber | |
| CN105084558A (en) | Method for treating high-salt wastewater by using halophilic microorganisms | |
| CN101560041B (en) | Electroplating wastewater treatment method combining biochemical method and decomplexation method | |
| CN111392865A (en) | Method for treating organic amine wastewater | |
| CN107381892A (en) | A kind of handling process of high-concentration ammonia nitrogenous wastewater | |
| CN105084677A (en) | Pretreatment method of high-salt high-concentration organic wastewater | |
| Wu et al. | Treatment and remediation of a wastewater lagoon using microelectrolysis and modified DAT/IAT methods | |
| CN105692967B (en) | A kind of processing method of PVA process units waste water | |
| CN113582439A (en) | Iron-carbon Fenton pretreatment method for acidic high-salt high-concentration organic wastewater | |
| CN108658389A (en) | A kind of processing method of high-sulfate waste water | |
| CN111732276A (en) | Antibiotic wastewater treatment process | |
| CN104944671B (en) | A kind of processing method of wastewater from molecular sieve catalyzer | |
| NL2032892B1 (en) | A high-salt and high-ammonia-nitrogen wastewater autotrophic denitrification and full quantification treatment device and method | |
| CN103524000B (en) | Advanced treatment recycling method of polyvinyl chloride centrifuge mother liquor wastewater | |
| CN101597128B (en) | Method for treating electroplating wastewater by complex breaking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151125 |
|
| RJ01 | Rejection of invention patent application after publication |