CN109534498A - A kind of biochemical treatment is organic to contain SO4 containing acid2-The processing method of waste water - Google Patents
A kind of biochemical treatment is organic to contain SO4 containing acid2-The processing method of waste water Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/006—Regulation methods for biological treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/04—Oxidation reduction potential [ORP]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/07—Alkalinity
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/19—SO4-S
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
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Abstract
The invention discloses a kind of organic acid that contains of biochemical treatment to contain SO4 2‑The processing method of waste water finally utilizes control basicity, oxidation-reduction potential, SO by two-stage series connection anaerobic device biochemical reaction again by the pH value of the adjusting waste water in homogeneous pond, then by adding sodium carbonate and mixing sanitary wastewater and brine waste in distribution reservoir4 2‑, the technological parameters such as salt method, realize that biochemical treatment is organic and contain SO containing acid4 2‑The stable operation of waste water.The process flow that the present invention handles waste water is simple, and treatment effeciency is high, and input cost is low, realizes recycling for waste water, and energy-saving and emission-reduction are conducive to enterprise and realize sustainable development.
Description
Technical field
The present invention relates to technical field of waste water processing, and in particular to a kind of biochemical treatment is organic to contain SO containing acid4 2-The place of waste water
Reason method.
Background technique
In the industrial production, esterification is exactly the reaction that alcohol generates ester and water with carboxylic acid or oxygen-containing inorganic acid.Be divided into carboxylic acid with
Alcohol reaction and inorganic oxacid react the reaction three classes with inorganic acid with alcohol with alcohol.Carboxylic acid is reversible with the esterification of alcohol
, and General reactions are extremely slow, therefore the common concentrated sulfuric acid makees catalyst.Polybasic carboxylic acid is reacted with alcohol, then produces a variety of esters.Allusion quotation
The esterification of type has the reaction of ethyl alcohol and acetic acid, generates the ethyl acetate with aromatic odor, is manufacture dyestuff and medicine
Raw material.It is wherein esterified the high-COD waste water of generation and washes kettle and generate containing SO4 2-Waste water generally uses the biochemical treatment of anaerobism+aerobic
Method.But because of the acetic acid content height of esterification waste water in industrial production and kettle generation is washed containing SO4 2-Height will affect anaerobic biochemical treatment
Often there is anaerobic sludge acidification in effect, makes biochemical device fluctuation of service.
Summary of the invention
The purpose of the present invention is to solve the above problems, provide a kind of organic acid that contains of biochemical treatment containing SO4 2-The place of waste water
Reason method, it is ensured that biochemical device can be stable.
In order to achieve the above objectives, the present invention solve technical problem the technical solution adopted is as follows:
A kind of biochemical treatment is organic to contain SO containing acid4 2-The processing method of waste water, comprising the following steps:
Step (1): esterification waste water is transported in homogeneous pond, adjusted in the homogeneous pond pH value of the waste water to
6.5-7.5；
Step (2): by step (1) handle resulting waste water be transported in distribution reservoir further adjust waste water COD to
10000-12000mg/L, pH value are stablized in 6.5-7.5, and water temperature is controlled at 47 ± 3 DEG C, moderately add sodium carbonate and ensure and subsequent detest
Basicity in oxygen device mixes a part of sanitary wastewater and ensures that the nutrition of C, N, P in waste water are balanced, mixes a part of brine waste guarantee
Underwater gold category ion is conducive to subsequent anaerobe growth.Since optimum range of the anaerobe to acid or alkali environment is relatively narrow,
More sensitive to the fluctuation of pH value, especially methanogen, the optimum pH range of methanogen is 6.6-7.5, therefore really
PH value is protected between 6.5-7.5.
Step (3): the boosted pump of waste water resulting after step (2) processing is got to waste water in the first anaerobic device, biochemical
Reaction carries out in the first anaerobic device, and the first anaerobic device and the second anaerobic device are connected in series, and waste water is in the first anaerobic device mesophytization
It is entered after reaction in the second anaerobic device, the second anaerobic device plays the recycling of anaerobic biological sludge and further the first anaerobic device of degradation
Processed waste water, the anaerobic sludge that the second anaerobic device bottom is recovered to periodically are pressed onto anaerobic sludge pond；
Step (4): by second anaerobic device, treated that waste water is transported in mixing pit, in the mixing pit plus
Enter part sanitary wastewater and brine waste；
Step (5): the waste water by mixing pit processing is transported to aerobic tank, by carrying out row up to standard after aerobic tank
It puts.
Further, in the step (3), the first anaerobic device tower temperature is controlled at 36 ± 2 DEG C, volatility ester fat is sour
(VFA) in 5mmol/L hereinafter, oxidation-reduction potential (ORP) is in -450mv--600mv, basicity is in 2500mg/L-4500mg/L.
When the first anaerobic device handles esterification waste water, acetic acid (acetic acid) composition unstability and anaerobic acidification stage in waste water are formed greatly
Measuring volatile fatty acid (VFA) together reduces the pH value of anaerobic device microorganism system, and anaerobic device will be acidified and seriously inhibit first
The growth of alkane bacterium ensures that basicity, can be fine between 2500mg/L-4500mg/L in the first anaerobic device by adding sodium carbonate
Control the acidification of the first anaerobic device anaerobic sludge.Without high-order cytochromes and chtochrome oxidase in another anaerobe cell
Enzyme, anaerobic device microorganism system need to keep reproducibility environment, and control oxidation-reduction potential (ORP) can be in -450mv--600mv
Control the activity of anaerobe.
Further, the oxidation-reduction potential (ORP) and in the case where basicity in controlling the first anaerobic device controls the
SO in one anaerobic device waste water4 2-≤ 300mg/L, high-concentration sulfuric acid radical ion sulfate reducing bacteria effect under be reduced into sulphur from
Son, sulphion are easily converted to toxic H2S, H2S generates toxicity to methanogen, inhibits the generation of methane.To salt in waste water
Control is in CL-Ion is in≤600mg/L, so that it may which so that the first anaerobic device is handling high COD esterification waste water, (the first anaerobic device is organic
Sludge loading=2.0kgCOD/ (m3.d the stable operation of)) the case where.
Further, further include step (31): step (3) anaerobic sludge pond being collected into anaerobic sludge and periodically passes through sludge
Pump pressure returns in the anaerobic sludge of the first anaerobic device in reflux, and the purpose to flow back in anaerobic sludge is will to contain acid containing SO4 2-Waste water with
Anaerobic sludge comes into full contact with reaction.
Further, further include step (32): the tower top three phase separator of the first anaerobic device and the second anaerobic device is recovered to
Biogas is collected by plenum chamber and then recycles or burned by biogas burner.
The present invention utilizes control basicity, oxidation-reduction potential, SO4 2-, the technological parameters such as salt, realize biochemical device processing
It is organic to contain SO containing acid4 2-Waste water can stable operation, in addition, present invention process process is simple, treatment effeciency is high, and input cost is low,
Recycling for waste water is realized, energy-saving and emission-reduction are conducive to enterprise and realize sustainable development.
Detailed description of the invention:
Fig. 1: a kind of biochemical treatment of the present invention is organic to contain SO containing acid4 2-The process flow chart of the processing method of waste water.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and embodiments.
Embodiment 1
As shown in Figure 1, a kind of biochemical treatment is organic to contain SO containing acid4 2-The processing method of waste water, comprising the following steps:
Step (1): esterification waste water is transported in homogeneous pond, adjusted in the homogeneous pond pH value of the waste water to
6.5；
Step (2): by step (1) handle resulting waste water be transported in distribution reservoir further adjust waste water COD to
10000mg/L, pH value are stablized 6.5, and water temperature is controlled at 47 DEG C, moderately add sodium carbonate and ensure basicity in subsequent anaerobic device, mix
Unify part sanitary wastewater and ensure that the nutrition of C, N, P in waste water are balanced, mixes a part of brine waste and ensure underwater gold category ion
Be conducive to subsequent anaerobe growth.Fluctuation since optimum range of the anaerobe to acid or alkali environment is relatively narrow, to pH value
Compare sensitive, especially methanogen, the optimum pH range of methanogen is 6.6-7.5, thereby, it is ensured that pH value is 6.5.
Step (3): the boosted pump of waste water resulting after step (2) processing is got to waste water in the first anaerobic device, biochemical
Reaction carries out in the first anaerobic device, and the first anaerobic device and the second anaerobic device are connected in series, and waste water is in the first anaerobic device mesophytization
It is entered after reaction in the second anaerobic device, the second anaerobic device plays the recycling of anaerobic biological sludge and further the first anaerobic device of degradation
Processed waste water, the anaerobic sludge that the second anaerobic device bottom is recovered to periodically are pressed onto anaerobic sludge pond.In this step, it controls
For the first anaerobic device tower temperature at 36 DEG C, volatility ester fat sour (VFA) is 5mmol/L, oxidation-reduction potential (ORP) is-
450mv, basicity 2500mg/L.When the first anaerobic device handles esterification waste water, acetic acid (acetic acid) composition in waste water is unstable
Property form a large amount of volatile fatty acids (VFA) with the anaerobic acidification stage together and reduce the pH value of anaerobic device microorganism system, anaerobism
Device will be acidified and seriously inhibit the growth of methane backeria, ensure that basicity is 2500mg/L in the first anaerobic device by adding sodium carbonate
The acidification of the first anaerobic device anaerobic sludge can be controlled very well.Without high-order cytochromes and cell in another anaerobe cell
Chromo-oxidase, anaerobic device microorganism system need to keep reproducibility environment, and control oxidation-reduction potential (ORP) is that -450mv can be with
Control the activity of anaerobe.In the case that oxidation-reduction potential (ORP) is with basicity in controlling the first anaerobic device, control
SO in first anaerobic device waste water4 2-For 300mg/L, high-concentration sulfuric acid radical ion is reduced under sulfate reducing bacteria effect
Sulphion, sulphion are easily converted to toxic H2S, H2S generates toxicity to methanogen, inhibits the generation of methane.To salt in waste water
The control of part is in CL-Ion is 600mg/L, so that it may which so that the first anaerobic device is handling high COD esterification waste water, (the first anaerobic device has
Machine sludge loading=2.0kgCOD/ (m3.d the stable operation of)) the case where.Anaerobic sludge pond is collected into anaerobic sludge and periodically passes through dirt
Dredge pump pressure returns in the anaerobic sludge of the first anaerobic device in reflux, and the purpose to flow back in anaerobic sludge is will to contain acid containing SO4 2-Waste water
It comes into full contact with and reacts with anaerobic sludge.The tower top three phase separator of first anaerobic device and the second anaerobic device is recovered to biogas by gas collection
Case recycles after collecting.
Step (4): by second anaerobic device, treated that waste water is transported in mixing pit, in the mixing pit plus
Enter part sanitary wastewater and brine waste；
Step (5): the waste water by mixing pit processing is transported to aerobic tank, by carrying out row up to standard after aerobic tank
It puts.
Embodiment 2
A kind of biochemical treatment is organic to contain SO containing acid4 2-The processing method of waste water, comprising the following steps:
Step (1): esterification waste water is transported in homogeneous pond, adjusted in the homogeneous pond pH value of the waste water to
7.5；
Step (2): by step (1) handle resulting waste water be transported in distribution reservoir further adjust waste water COD to
12000mg/L, pH value are stablized 7.5, and water temperature is controlled at 50 DEG C, moderately add sodium carbonate and ensure basicity in subsequent anaerobic device, mix
Unify part sanitary wastewater and ensure that the nutrition of C, N, P in waste water are balanced, mixes a part of brine waste and ensure underwater gold category ion
Be conducive to subsequent anaerobe growth.Fluctuation since optimum range of the anaerobe to acid or alkali environment is relatively narrow, to pH value
Compare sensitive, especially methanogen, the optimum pH range of methanogen is 6.6-7.5, thereby, it is ensured that pH value is 7.5.
Step (3): the boosted pump of waste water resulting after step (2) processing is got to waste water in the first anaerobic device, biochemical
Reaction carries out in the first anaerobic device, and the first anaerobic device and the second anaerobic device are connected in series, and waste water is in the first anaerobic device mesophytization
It is entered after reaction in the second anaerobic device, the second anaerobic device plays the recycling of anaerobic biological sludge and further the first anaerobic device of degradation
Processed waste water, the anaerobic sludge that the second anaerobic device bottom is recovered to periodically are pressed onto anaerobic sludge pond.In this step, it controls
For the first anaerobic device tower temperature at 38 DEG C, volatility ester fat sour (VFA) is 4mmol/L, oxidation-reduction potential (ORP) is-
600mv, basicity 4500mg/L.When the first anaerobic device handles esterification waste water, acetic acid (acetic acid) composition in waste water is unstable
Property form a large amount of volatile fatty acids (VFA) with the anaerobic acidification stage together and reduce the pH value of anaerobic device microorganism system, anaerobism
Device will be acidified and seriously inhibit the growth of methane backeria, ensure that basicity is 4500mg/L in the first anaerobic device by adding sodium carbonate
The acidification of the first anaerobic device anaerobic sludge can be controlled very well.Without high-order cytochromes and cell in another anaerobe cell
Chromo-oxidase, anaerobic device microorganism system need to keep reproducibility environment, and control oxidation-reduction potential (ORP) is that -600mv can be with
Control the activity of anaerobe.In the case that oxidation-reduction potential (ORP) is with basicity in controlling the first anaerobic device, control
SO in first anaerobic device waste water4 2-For 280mg/L, high-concentration sulfuric acid radical ion is reduced under sulfate reducing bacteria effect
Sulphion, sulphion are easily converted to toxic H2S, H2S generates toxicity to methanogen, inhibits the generation of methane.To salt in waste water
The control of part is in CL-Ion is 550mg/L, so that it may which so that the first anaerobic device is handling high COD esterification waste water, (the first anaerobic device has
Machine sludge loading=2.0kgCOD/ (m3.d the stable operation of)) the case where.Anaerobic sludge pond is collected into anaerobic sludge and periodically passes through dirt
Dredge pump pressure returns in the anaerobic sludge of the first anaerobic device in reflux, and the purpose to flow back in anaerobic sludge is will to contain acid containing SO4 2-Waste water
It comes into full contact with and reacts with anaerobic sludge.The tower top three phase separator of first anaerobic device and the second anaerobic device is recovered to biogas by gas collection
Case recycles after collecting.
Step (4): by second anaerobic device, treated that waste water is transported in mixing pit, in the mixing pit plus
Enter part sanitary wastewater and brine waste；
Step (5): the waste water by mixing pit processing is transported to aerobic tank, by carrying out row up to standard after aerobic tank
It puts.
Embodiment 3
A kind of biochemical treatment is organic to contain SO containing acid4 2-The processing method of waste water, comprising the following steps:
Step (1): esterification waste water is transported in homogeneous pond, and the pH value of the waste water is adjusted in the homogeneous pond to 7；
Step (2): by step (1) handle resulting waste water be transported in distribution reservoir further adjust waste water COD to
11000mg/L, pH value are stablized 7, and water temperature is controlled at 44 DEG C, moderately add sodium carbonate and ensure basicity in subsequent anaerobic device, mixing
A part divides sanitary wastewater to ensure that the nutrition of C, N, P in waste water are balanced, mixes a part of brine waste and ensures underwater gold category ion
Be conducive to subsequent anaerobe growth.Fluctuation since optimum range of the anaerobe to acid or alkali environment is relatively narrow, to pH value
Compare sensitive, especially methanogen, the optimum pH range of methanogen is 6.6-7.5, thereby, it is ensured that pH value is 7.
Step (3): the boosted pump of waste water resulting after step (2) processing is got to waste water in the first anaerobic device, biochemical
Reaction carries out in the first anaerobic device, and the first anaerobic device and the second anaerobic device are connected in series, and waste water is in the first anaerobic device mesophytization
It is entered after reaction in the second anaerobic device, the second anaerobic device plays the recycling of anaerobic biological sludge and further the first anaerobic device of degradation
Processed waste water, the anaerobic sludge that the second anaerobic device bottom is recovered to periodically are pressed onto anaerobic sludge pond.In this step, it controls
For the first anaerobic device tower temperature at 34 DEG C, volatility ester fat sour (VFA) is 3mmol/L, oxidation-reduction potential (ORP) is-
500mv, basicity 3000mg/L.When the first anaerobic device handles esterification waste water, acetic acid (acetic acid) composition in waste water is unstable
Property form a large amount of volatile fatty acids (VFA) with the anaerobic acidification stage together and reduce the pH value of anaerobic device microorganism system, anaerobism
Device will be acidified and seriously inhibit the growth of methane backeria, ensure that basicity is 3000mg/L in the first anaerobic device by adding sodium carbonate
The acidification of the first anaerobic device anaerobic sludge can be controlled very well.Without high-order cytochromes and cell in another anaerobe cell
Chromo-oxidase, anaerobic device microorganism system need to keep reproducibility environment, and control oxidation-reduction potential (ORP) is that -500mv can be with
Control the activity of anaerobe.In the case that oxidation-reduction potential (ORP) is with basicity in controlling the first anaerobic device, control
SO in first anaerobic device waste water4 2-For 240mg/L, high-concentration sulfuric acid radical ion is reduced under sulfate reducing bacteria effect
Sulphion, sulphion are easily converted to toxic H2S, H2S generates toxicity to methanogen, inhibits the generation of methane.To salt in waste water
The control of part is in CL-Ion is 500mg/L, so that it may which so that the first anaerobic device is handling high COD esterification waste water, (the first anaerobic device has
Machine sludge loading=2.0kgCOD/ (m3.d the stable operation of)) the case where.Anaerobic sludge pond is collected into anaerobic sludge and periodically passes through dirt
Dredge pump pressure returns in the anaerobic sludge of the first anaerobic device in reflux, and the purpose to flow back in anaerobic sludge is will to contain acid containing SO4 2-Waste water
It comes into full contact with and reacts with anaerobic sludge.The tower top three phase separator of first anaerobic device and the second anaerobic device is recovered to biogas by gas collection
Case is collected and is burned by biogas burner.
Step (4): by second anaerobic device, treated that waste water is transported in mixing pit, in the mixing pit plus
Enter part sanitary wastewater and brine waste；
Step (5): the waste water by mixing pit processing is transported to aerobic tank, by carrying out row up to standard after aerobic tank
It puts.
Using the processing method of above-described embodiment, by controlling basicity, oxidation-reduction potential, SO4 2-, the techniques ginseng such as salt
Number realizes the organic acid that contains of biochemical device processing containing SO4 2-Waste water can stable operation, in addition, the process flow of above-described embodiment
Simply, treatment effeciency is high, and input cost is low, realizes recycling for waste water, and it is sustainable to be conducive to enterprise's realization for energy-saving and emission-reduction
Development.
Finally, it should be noted that above embodiments are only to illustrate the present invention and not limit technology described in the invention
Scheme；Therefore, although this specification is referring to above-mentioned each embodiment, the present invention has been described in detail, this
Field it is to be appreciated by one skilled in the art that still can modify to the present invention or equivalent replacement；And all do not depart from this
The technical solution and its improvement of the spirit and scope of invention, should all cover within the scope of the claims of the present invention.
Claims (5)
1. a kind of biochemical treatment is organic to contain SO containing acid4 2-The processing method of waste water, which comprises the following steps:
Step (1): esterification waste water is transported in homogeneous pond, and the pH value of the waste water is adjusted in the homogeneous pond to 6.5-
7.5；
Step (2): the resulting waste water of step (1) processing is transported in distribution reservoir and further adjusts waste water COD to 10000-
12000mg/L, pH value are stablized in 6.5-7.5, and water temperature is controlled at 47 ± 3 DEG C, is moderately added sodium carbonate and is ensured in subsequent anaerobic device
Basicity mixes a part of sanitary wastewater and ensures that the nutrition of C, N, P in waste water are balanced, mixes a part of brine waste and ensure underwater gold
Belong to ion and is conducive to subsequent anaerobe growth；
Step (3): the boosted pump of waste water resulting after step (2) processing is got to waste water in the first anaerobic device, biochemical reaction
It is carried out in the first anaerobic device, the first anaerobic device and the second anaerobic device are connected in series, and waste water is reacted in the first anaerobic device mesophytization
After enter in the second anaerobic device, the second anaerobic device play anaerobic biological sludge recycling and further degradation the first anaerobic device processing
The waste water crossed, the anaerobic sludge that the second anaerobic device bottom is recovered to periodically are pressed onto anaerobic sludge pond；
Step (4): by second anaerobic device, treated that waste water is transported in mixing pit, the addition portion in the mixing pit
Divide sanitary wastewater and brine waste；
Step (5): the waste water by mixing pit processing is transported to aerobic tank, by carrying out qualified discharge after aerobic tank.
2. biochemical treatment according to claim 1 is organic to contain SO containing acid4 2-The processing method of waste water, which is characterized in that in institute
It states in step (3), controls the first anaerobic device tower temperature at 36 ± 2 DEG C, volatility ester fat sour (VFA) is in 5mmol/L hereinafter, oxygen
Change reduction potential (ORP) in -450mv--600mv, basicity is in 2500mg/L-4500mg/L.
3. biochemical treatment according to claim 2 is organic to contain SO containing acid4 2-The processing method of waste water, which is characterized in that described
SO in first anaerobic device4 2-≦300mg/L。
4. biochemical treatment according to claim 1 is organic to contain SO containing acid4 2-The processing method of waste water, which is characterized in that also wrap
It includes step (31): step (3) anaerobic sludge pond being collected into anaerobic sludge, the first anaerobic device of return is periodically pumped by sludge
In anaerobic sludge in reflux, the purpose to flow back in anaerobic sludge is will to contain acid containing SO4 2-Waste water and anaerobic sludge come into full contact with instead
It answers.
5. biochemical treatment according to claim 1 is organic to contain SO containing acid4 2-The processing method of waste water, which is characterized in that also wrap
Include step (32): the tower top three phase separator of the first anaerobic device and the second anaerobic device is recovered to biogas and is collected and then returned by plenum chamber
It receives using or is burned by biogas burner.
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