CN104310635A - Advanced treatment method for comprehensive waste water in automobile factory - Google Patents
Advanced treatment method for comprehensive waste water in automobile factory Download PDFInfo
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- CN104310635A CN104310635A CN201410533598.0A CN201410533598A CN104310635A CN 104310635 A CN104310635 A CN 104310635A CN 201410533598 A CN201410533598 A CN 201410533598A CN 104310635 A CN104310635 A CN 104310635A
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- ozone
- treatment method
- automobile factory
- advanced treatment
- reactor
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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
- C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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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
-
- 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
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
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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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention relates to an advanced treatment method for comprehensive waste water in an automobile factory, and belongs to the field of wastewater treatment method. The method comprises the following steps: regulating a pH value of wastewater subjected to grating filtration, sand setting, coagulating sedimentation and adsorption treatment between 7 and 7.5 by using alkali liquid; pumping into an oxidation reactor; making ozone by virtue of an ozone mechanism and crushing ozone-containing gas into tiny bubbles from a porous gas distribution plate at the bottom of a reactor and introducing into a reactor; introducing hydrogen peroxide and ferrous sulfate at the same time, wherein discharge water subjected to oxidization reaction is the discharge water which reaches the standard after advanced treatment. According to the advanced treatment method, a combined process of ozone, hydrogen peroxide and ferrous ion is used, the treatment effect is stable, biochemical oxygen demand (BOD)5 removal rate of the wastewater exceeds 50 percent, the removal rates of chemical oxygen demand (COD) and total organic carbon (TOC) exceed 70 percent, the removal rate of cyanide exceeds 90 percent, and the concentration of pollutant in discharge water is lower than the emission standard; moreover, the advanced treatment method has the characteristics of simple process, low operation expense and the like, and is convenient to operate.
Description
Technical field
The present invention relates to the deep treatment method of a kind of automobile factory comprehensive wastewater, belong to method of wastewater treatment field.
Background technology
Automobile factory's comprehensive wastewater is mixed by automobile making factory production waste water and plant area's sanitary sewage, wherein comprise a large amount of organic pollutant, nutrient pollutant and toxic pollutants, part pollutent wherein can be removed after sand setting and coagulating sedimentation and absorption pre-treatment, but be difficult to reach emission request, be necessary to carry out advanced treatment.Be 40-50mg/L, CN because this waste water BOD5 be 20-25mg/L, COD be 110-120mg/L, SS is 10-20mg/L, TOC
-for 4-6mg/L, BOD5/COD=0.1-0.2, biodegradability is very poor, therefore biological treatment can not be adopted to process.In view of ozone has extremely strong oxidation capacity, can be used to oxygenolysis pollutent, for organics removal, decolouring, deodorizing, taste removal, sterilization, kill algae, remove iron, manganese, cobalt and cyanogen, phenol etc.But the utilization ratio of ozone is not high under general condition, and the cost of manufacture of ozone is higher, causes the expense of ozonize higher.Therefore, be necessary to study the utilising efficiency how more effectively improving ozone and the oxidation capacity strengthening ozone.
Therefore, the deep treatment method studying automobile factory's comprehensive wastewater that a kind of technique is simple, easy to operate, working cost is low, treatment effect is good has certain necessity.
Summary of the invention
The present invention aims to provide the deep treatment method of automobile factory's comprehensive wastewater that a kind of technique is simple, easy to operate, working cost is low, treatment effect is good.
The deep treatment method of automobile factory of the present invention comprehensive wastewater, comprises the following steps:
By the waste water after grid filtration, sand setting, coagulating sedimentation and adsorption treatment, regulate pH value to 7-7.5 with alkali lye, pump in oxidation reactor, after the porous air distribution plate of reactor bottom is broken into tiny bubble, enter reactor by containing ozone gas by ozone mechanism ozone simultaneously, add hydrogen peroxide and ferrous sulfate, the draining that the draining after oxidizing reaction is up to standard after being advanced treatment simultaneously.
Preferably, ozone gas production rate of the present invention is 16-18L/h, and ozone inlet gas concentration is about 45mg/L.
Preferred, hydrogen peroxide use of the present invention is 100mg/L, and ferrous sulfate consumption is 10mg/L.
Preferred further, oxidation time of the present invention is 15-20min.
Deep treatment method of the present invention, employing " ozone+hydrogen peroxide+ferrous ion " combination process carries out the advanced treatment to automobile factory's comprehensive wastewater.In deep treatment method of the present invention, the pH value of pending water sample has certain influence to ozonation, and when water sample pH value is larger, namely when water sample meta-alkalescence, COD removes speed and increases, and for this reason, present method selects pH value to be 7-7.5.The ozone utilization rate of reactor reduces with lasting prolongation, and before after process starts, in l5min, ozone utilization rate is higher, all more than 50%; Ozone utilization rate sharply declines subsequently, has dropped to less than 30% to ozone utilization rate during 30min, and for this reason, present method Selective Oxidation time is 15-20min.The change of concentration of hydrogen peroxide is larger on oxidizing reaction impact, when concentration of hydrogen peroxide is 1OOmg/L, the clearance of COD is also the highest, after 1OOmg/L, degradation rate reduces on the contrary, this is because concentration of hydrogen peroxide is too high,-the OH generated in reacting react with organism, and directly mutually collides and regenerated H2O2 and cause degradation rate downward trend; When ferrous sulfate concentration is 1Omg/L, the clearance of COD is also the highest, and after 1Omg/L, degradation rate reduces on the contrary, and this is because ferrous ion can produce iron ion in decomposition of hydrogen peroxide process, and iron ion is very easily with Fe (OH)
2 +form exist, cause COD degradation rate to decline.
Deep treatment method of the present invention, adopt " ozone+hydrogen peroxide+ferrous ion " combination process, treatment effect is stablized, to the BOD5 clearance in waste water more than 50%, the clearance of COD and TOC is all more than 70%, prussiate clearance has exceeded 90%, and the Pollutant levels in water outlet all lower than emission standard, and have the features such as technique is simple, easy to operate, working cost is low.
Embodiment
Embodiment one:
By the waste water after grid filtration, sand setting, coagulating sedimentation and adsorption treatment, regulate pH value to 7-7.5 with alkali lye, pump in oxidation reactor, by ozone mechanism ozone, gas production rate is 16-18L/h, the ozone gas simultaneously concentration being about 45mg/L enters reactor after the porous air distribution plate of reactor bottom is broken into tiny bubble, adds the hydrogen oxide of 100mg/L and the ferrous sulfate of 10mg/L, the draining that the draining after oxidizing reaction 15-20min is up to standard after being advanced treatment simultaneously.
Embodiment two: treatment effect
Use deep treatment method of the present invention, after certain automobile making factory production waste water is mixed with plant area sanitary sewage, waste water after grid filtration, sand setting, coagulating sedimentation and adsorption treatment (i.e. coagulation) carries out advanced treatment, and result as shown in Table-1.
Table-1 treatment effect
From table-1, deep treatment method of the present invention, to the BOD5 clearance in waste water more than the clearance of 50%, COD and TOC all more than 70%, prussiate clearance has exceeded 90%, and the Pollutant levels in water outlet are all lower than emission standard.
Claims (4)
1. the deep treatment method of automobile factory's comprehensive wastewater, comprises the following steps:
By the waste water after grid filtration, sand setting, coagulating sedimentation and adsorption treatment, regulate pH value to 7-7.5 with alkali lye, pump in oxidation reactor, after the porous air distribution plate of reactor bottom is broken into tiny bubble, enter reactor by containing ozone gas by ozone mechanism ozone simultaneously, add hydrogen peroxide and ferrous sulfate, the draining that the draining after oxidizing reaction is up to standard after being advanced treatment simultaneously.
2. the deep treatment method of automobile factory as claimed in claim 1 comprehensive wastewater, it is characterized in that described ozone gas production rate is 16-18L/h, ozone inlet gas concentration is about 45mg/L.
3. the deep treatment method of automobile factory as claimed in claim 1 comprehensive wastewater, it is characterized in that described hydrogen peroxide use is 100mg/L, ferrous sulfate consumption is 10mg/L.
4. the deep treatment method of automobile factory as claimed in claim 1 comprehensive wastewater, is characterized in that described oxidation time is 15-20min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410533598.0A CN104310635A (en) | 2014-10-11 | 2014-10-11 | Advanced treatment method for comprehensive waste water in automobile factory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410533598.0A CN104310635A (en) | 2014-10-11 | 2014-10-11 | Advanced treatment method for comprehensive waste water in automobile factory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104310635A true CN104310635A (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410533598.0A Pending CN104310635A (en) | 2014-10-11 | 2014-10-11 | Advanced treatment method for comprehensive waste water in automobile factory |
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| CN (1) | CN104310635A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935157A (en) * | 2017-11-30 | 2018-04-20 | 兰秋波 | A kind of processing method of organic wastewater |
-
2014
- 2014-10-11 CN CN201410533598.0A patent/CN104310635A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935157A (en) * | 2017-11-30 | 2018-04-20 | 兰秋波 | A kind of processing method of organic wastewater |
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Application publication date: 20150128 |