CN104609606B - A kind of petrochemical wastewater preprocess method - Google Patents
A kind of petrochemical wastewater preprocess method Download PDFInfo
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- CN104609606B CN104609606B CN201510057121.4A CN201510057121A CN104609606B CN 104609606 B CN104609606 B CN 104609606B CN 201510057121 A CN201510057121 A CN 201510057121A CN 104609606 B CN104609606 B CN 104609606B
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- petrochemical wastewater
- coal
- preprocess method
- petrochemical
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of petrochemical wastewater preprocess method, the steps include: to heat petrochemical industrial park, coal for power generation is broken, grind, yield less than 200 mesh and account for the ore grinding product of 70 85%, ore grinding product is mixed with 100 250g/L ratios with petrochemical wastewater in agitator, and add finite concentration acid solution, pH value of waste water is adjusted to 27, it is sufficiently stirred for 5 10min, add aqueous slkali and pH value is adjusted to neutrality, concentration, press filtration, after press filtration, briquette can be directly used for generating, heats, and filtrate enters subsequent biochemical system and processes.According to the present invention, coal dust need not the change of any surface nature, only needs simple crushing, grinding, the clearance of COD in petrochemical wastewater can be reached 60 70%, and chroma removal rate reaches 80 90%, effectively reduces biochemical system load；The invention has the beneficial effects as follows that pollutants removal rate is high, alleviation biochemical system processing pressure, processing cost are low, simple, convenient.
Description
Technical field
The present invention relates to a kind of method of wastewater treatment, be to use coal dust absorption method pretreatment petrochemical industry to give up in particular
The method of water.
Background technology
Petrochemical industry is to be main raw material with oil or natural gas, through cracking, refine, be fractionated, reforming,
A series of various processes process, the processing methods such as synthesis, produce various different oil product, change
Learn fiber, Organic Chemicals and the industry of chemical fertilizer.Production process can produce substantial amounts of waste water, mainly wrap
Include petroleum asphaltene, petrochemical wastewater, fertilizer industrial wastewater, chemical fibre industry waste water etc..Petrochemical wastewater is arranged
High-volume big, pollutant component complexity, containing toxic bigger phenol, cyanogen, amine, alcohol, organic acid, organochlorine etc.
Material, owing to there being bigger solubility in water, is typically very difficult to remove.
Petrochemical wastewater processing method can be divided into according to removing principle difference: Physical, chemical method and biochemical process.Thing
Reason treatment technology, is mainly used in pretreatment, alleviates the load of follow-up structures, and conventional method has oil removal, gas
Float, adsorb and UF membrane etc..Wherein absorption method is due to technique simply, easy to operate, economical, treatment effect
Well extensively being paid close attention to by researcher, wherein the selection of adsorbent is the key of absorption method.Find a kind of efficient, thing
U.S. inexpensive adsorbent becomes focus of concern.
Summary of the invention
Goal of the invention: present invention aims to the deficiencies in the prior art, it is provided that a kind of petrochemical wastewater is located in advance
Reason method, the method is simple to operate, with low cost, respond well, has commercial introduction using value widely.
Technical scheme: a kind of petrochemical wastewater preprocess method of the present invention, comprises the steps:
A, absorption coal is fed in disintegrating machine crush, obtain the granularity breakdown products less than 3mm；
B, breakdown products is fed in ore mill it is ground, obtain grain in grinding product, and grinding product
Degree is 70-85% less than the mass fraction of 200 mesh materials；
C, petrochemical wastewater is delivered in agitator, and in agitator, adds a certain amount of acid solution, regulate water
The pH value of body is 2-7, is added in agitator by the consumption of 100-250g/L by the grinding product from step b and stirs
Mix mixing 5-10min, obtain coal and waste water mixture；
D, adding a certain amount of aqueous slkali in coal and waste water mixture, regulation pH value of waste water is to 6-9, and by it
It is delivered in thickener concentrate, adds flocculating agent and flocculant, obtain overflow water and concentrate underflow；
E, the concentration underflow from step d is fed filter-press dehydration in filter press, obtain filtrate and dehydration briquette；
F, the overflow water in above-mentioned steps d and e and filtrate being merged, obtain pre-processing water outlet, described petrochemical industry is given up
Water pretreatment terminates.
Wherein: the pretreatment water outlet in step f feeds sewage treatment plant's subsequent biochemical system and carries out biochemical treatment；
Dehydration briquette from step e is directly used in generating, heats or make water-coal-slurry generating.
As preferably: the acid solution added in described step c is sulfuric acid solution.
As preferably: the aqueous slkali added in described step d is NaOH solution or Na2CO3Solution.
Further, the flocculating agent added in described step d uses inorganic salts flocculating agent.
Preferably: the flocculating agent added in described step d is polyaluminium sulfate or bodied ferric sulfate.
Preferably: the flocculant added in described step d is polyacrylamide.
Described absorption coal is not limited by coal, can be petrochemical industrial park heat, electricity power enterprise's coal,
Can be the low-order coal such as brown coal, jet coal, it is also possible to be the high-order coal such as coking coal, anthracite；Petrochemical wastewater and coal
In mixed process, adding a certain amount of acid solution, adsorption effect is more preferably.
Compared with prior art, it provides the benefit that the present invention:
(1) needed for the present invention, coal dust needs not move through traditional technological transformation or processing, the most levigate after, i.e.
The adsorption effect with the pollutant in petrochemical wastewater, COD clearance is up to 60-70%, color removal
Rate reaches 80-90%.
(2) it is adsorbed with the coal dust of pollutant, can generate electricity, heat and reuse, it is achieved the zero-emission of adsorbent
Putting, the organic pollution simultaneously adsorbed in coal dust is converted into CO through high-temp combustion2And H2O, it is achieved You Jinan
The thorough degraded of degradation material.
(3) present invention utilizes coal dust adsorption treatment petrochemical wastewater, reduces bio-refractory in petrochemical wastewater organic
The content of thing, reduces biochemical system load；Reduce sewage disposal investment and floor space, reduce sewage disposal fortune
Row cost, has commercial introduction prospect widely.
Accompanying drawing explanation
Fig. 1 is the handling process schematic diagram of petrochemical wastewater preprocess method of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings technical solution of the present invention is described in detail, but protection scope of the present invention not office
It is limited to described embodiment.
Example 1, a kind of petrochemical wastewater preprocess method, comprise the steps:
A, the absorption coal that coal is jet coal is fed in disintegrating machine crush, obtain granularity less than 3mm
Breakdown products；
B, breakdown products is fed ore mill is carried out levigate, obtain grinding product, granularity in grinding product
It is 85% less than the mass fraction of 200 mesh materials；
C, be 3987mg/L by chemical oxygen consumption (COC) (COD) value, colourity be 453 Cotton Pulp Wastewater be delivered to
In agitator, and adding sulfuric acid solution in agitator, the pH value of regulation water body is 3, by from step b
Grinding product adds stirring mixing in agitator to by the consumption of 200g/L, obtains coal and waste water mixture；
D, adding a certain amount of sodium hydroxide solution in coal and waste water mixture, regulation pH value of waste water is 7,
And be transported in thickener concentrate, add polyaluminium sulfate flocculating agent and polyacrylamide flocculant,
Obtain overflow water and concentrate underflow；
E, the concentration underflow from step d is fed filter-press dehydration in filter press, obtain filtrate and dehydration briquette；
F, the overflow water in above-mentioned steps d and e and filtrate being merged, obtaining chemical oxygen consumption (COC) (COD) value is
1245mg/L, colourity is the pretreatment water outlet of 58.8, and it is follow-up that pretreatment water outlet is fed to waste water treatment plant
Biochemical system；
G, the dehydration briquette from step e is transported to neighbouring power plant it is used for generating electricity.
Example 2, a kind of petrochemical wastewater preprocess method, comprise the steps:
A, it is that anthracitic absorption coal feeds in disintegrating machine and crushes by coal, obtains granularity less than 3mm
Breakdown products；
B, breakdown products is fed ore mill is carried out levigate, obtain grinding product, granularity in grinding product
It is 80% less than the mass fraction of 200 mesh materials；
C, the petrochemical wastewater that chemical oxygen consumption (COC) (COD) value is 3526mg/L is sent in agitator,
And in agitator, adding sulfuric acid solution, the pH value of regulation water body is 3.5, is pressed by the grinding product from step b
The consumption of 200g/L adds stirring mixing in agitator to, obtains coal and waste water mixture；
D, in coal and waste water mixture, add a certain amount of calcium carbonate soln, pH value of waste water is adjusted to 7, and
It is sent in thickener concentrate, adds bodied ferric sulfate flocculating agent and polyacrylamide flocculant, obtain
Overflow water and concentration underflow；
E, the concentration underflow from step d is fed filter-press dehydration in filter press, obtain filtrate and dehydration briquette；
F, the overflow water in above-mentioned steps d and e and filtrate being merged, obtaining chemical oxygen consumption (COC) (COD) value is
The pretreatment water outlet of 1291mg/L, and pretreatment water outlet is fed to waste water treatment plant's biochemical system carry out biochemistry
Process；
G, the dehydration briquette from step e is transported to neighbouring power plant makes water-coal-slurry and be used for generating electricity.
Although as it has been described above, represented and described the present invention with reference to specific preferred embodiment, but it must not
It is construed to the restriction to the present invention self.In the spirit and scope of the present invention defined without departing from claims
Under premise, can various changes can be made in the form and details to it.
Claims (6)
1. a petrochemical wastewater preprocess method, it is characterised in that comprise the steps:
A, absorption coal is fed in disintegrating machine crush, obtain the granularity breakdown products less than 3mm；
B, breakdown products is fed in ore mill it is ground, obtain grain in grinding product, and grinding product
Degree is 70-85% less than the mass fraction of 200 mesh materials；
C, petrochemical wastewater is delivered in agitator, and in agitator, adds a certain amount of acid solution, regulate water
The pH value of body is 2-7, is added in agitator by the consumption of 100-250g/L by the grinding product from step b and stirs
Mix mixing 5-10min, obtain coal and waste water mixture；
D, adding a certain amount of aqueous slkali in coal and waste water mixture, regulation pH value of waste water is to 6-9, and by it
It is delivered in thickener concentrate, adds flocculating agent and flocculant, obtain overflow water and concentrate underflow；
E, the concentration underflow from step d is fed filter-press dehydration in filter press, obtain filtrate and dehydration briquette；
F, the overflow water in above-mentioned steps d and e and filtrate being merged, obtain pre-processing water outlet, described petrochemical industry is given up
Water pretreatment terminates.
A kind of petrochemical wastewater preprocess method the most according to claim 1, it is characterised in that described step
The acid solution added in c is sulfuric acid solution.
A kind of petrochemical wastewater preprocess method the most according to claim 1, it is characterised in that described step
The aqueous slkali added in d is NaOH solution or Na2CO3Solution.
A kind of petrochemical wastewater preprocess method the most according to claim 1, it is characterised in that described step
The flocculating agent added in d uses inorganic salts flocculating agent.
A kind of petrochemical wastewater preprocess method the most according to claim 4, it is characterised in that described step
The flocculating agent added in d is polyaluminium sulfate or bodied ferric sulfate.
A kind of petrochemical wastewater preprocess method the most according to claim 1, it is characterised in that in step d
The flocculant added is polyacrylamide.
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| CN104609606B true CN104609606B (en) | 2016-08-17 |
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| CN105461135B (en) * | 2015-12-01 | 2017-03-29 | 湖南永清环保研究院有限责任公司 | A kind of organic petrochemical industry wastewater preprocessing process of high-concentration hardly-degradable |
| CN105601055B (en) * | 2016-03-21 | 2019-03-29 | 中国矿业大学 | A kind of semi-coke wastewater multilevel processing technology |
| CN109530096A (en) * | 2019-01-07 | 2019-03-29 | 山西潞安集团余吾煤业有限责任公司 | A kind of floatation clean coal flocculation filter-press dehydration new process |
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| CN87101908A (en) * | 1987-03-10 | 1987-12-02 | 南京大学 | Absorption-coagulation or flotation treatment of dyeing and printing |
| CN1194238A (en) * | 1997-03-13 | 1998-09-30 | 杭州市四堡污水处理厂 | Method of removing heavy metal from industrial waste water |
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