CN116062871A - High-concentration tert-butyl alcohol wastewater treatment method - Google Patents

High-concentration tert-butyl alcohol wastewater treatment method Download PDF

Info

Publication number
CN116062871A
CN116062871A CN202111275043.7A CN202111275043A CN116062871A CN 116062871 A CN116062871 A CN 116062871A CN 202111275043 A CN202111275043 A CN 202111275043A CN 116062871 A CN116062871 A CN 116062871A
Authority
CN
China
Prior art keywords
wastewater
butanol
concentration
hydrogen peroxide
reaction
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
Application number
CN202111275043.7A
Other languages
Chinese (zh)
Inventor
张方银
梁斌
刘婷婷
孟宪谭
黄斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Chemical Corp
Qilu Petrochemical Co of Sinopec
Original Assignee
China Petroleum and Chemical Corp
Qilu Petrochemical Co of Sinopec
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Petroleum and Chemical Corp, Qilu Petrochemical Co of Sinopec filed Critical China Petroleum and Chemical Corp
Priority to CN202111275043.7A priority Critical patent/CN116062871A/en
Publication of CN116062871A publication Critical patent/CN116062871A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • 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
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/34—Organic compounds containing oxygen
    • 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
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The invention belongs to the technical field of wastewater treatment, and particularly relates to a method for treating high-concentration tertiary butanol wastewater. According to the treatment method of the high-concentration tertiary butanol wastewater, on the basis of the traditional photo-Fenton oxidation process, by adding a certain amount of potassium hydrogen phthalate, the adsorption of the potassium hydrogen phthalate on the electrode surface has absolute advantages compared with that of tertiary butanol, the excessive capture of tertiary butanol on hydroxyl radicals on the electrode surface can be avoided, the inhibition effect of tertiary butanol on photo-catalytic degradation is lightened, the tertiary butanol degradation efficiency is effectively improved, the high-concentration tertiary butanol wastewater with COD of 15000-30000mg/L is treated to be less than 50mg/L, the purpose of direct discharge is achieved, and H in the photo-Fenton oxidation reaction process can be reduced 2 O 2 And significantly shortens the duration of the photo-Fenton oxidation reaction.

Description

High-concentration tert-butyl alcohol wastewater treatment method
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to a method for treating high-concentration tertiary butanol wastewater.
Background
With the increasing awareness of environmental protection, the treatment of hardly degradable organic wastewater has been receiving global attention as an important subject in the field of environmental protection. The tertiary butanol wastewater has the characteristics of high concentration, difficult degradation, poor biodegradability and the like, and a large amount of wastewater discharged into a sewage treatment field can cause great impact on a biochemical treatment unit, so that the normal operation of the sewage field is seriously affected. Therefore, the treatment of tertiary butanol wastewater is always a difficult problem for the operation of sewage farms of refining enterprises. The wastewater treatment technology developed at present mainly comprises a physical method, a chemical method, a biological method and the like. The methods have advantages and disadvantages, but most of the traditional methods have different defects of incomplete pollutant degradation, easy secondary pollution, large equipment investment, high operation cost and the like.
Gao Weijie and the like carry out pretreatment research on tertiary butanol simulated wastewater by adopting an ozone oxidation method and a Fenton reagent method, and the results show that the COD removal rate of the wastewater can only reach 31.93 percent after 90 minutes of reaction time at the reaction temperature of 35 ℃ under the conditions that the pH value is 11.00 and the ozone air inflow is 1400mg/h, and the removal rate is still lower. This is because tertiary butanol is a tertiary alcohol whose hydrogen atoms and oxygen atoms in hydroxyl groups on the molecular structure are firmly bonded due to a high-density electron cloud; meanwhile, the tertiary butanol is difficult to degrade or dehydrogenate due to the fact that the carbon atom connected with the hydroxyl has no hydrogen atom, so that efficient treatment is realized.
The most potent oxidizing agent reported to be the most oxidizing agent for refractory organics is the hydroxyl radical OH, whereas using fenton's reagent is the best way to generate hydroxyl radicals, i.e., hydrogen peroxide can generate hydroxyl radicals under ferrous catalysis under acidic conditions. Gao Weijie and the like try to pretreat tert-butanol simulated wastewater by adopting a Fenton reagent method, and the result shows that in H 2 O 2 The addition amount is 25mL and Fe 2+ 200mL of simulated wastewater is treated for 30 minutes under the conditions of the addition amount of 0.75g, the pH value of 3-5 and the reaction temperature of 30-35 ℃, the COD removal rate can reach more than 90 percent, and the treatment is carried outThe management efficiency is relatively ideal. However, since a large amount of iron oxide precipitates are generated after Fenton's reagent is used, the disposal cost is high, the disposal scale is small, and the data reliability is not high.
In order to improve the Fenton reaction efficiency and greatly reduce the sludge amount, the most effective and economical method is the photo-Fenton reaction at present. Unlike Fenton oxidation with ferrous ion as catalyst, photo-Fenton oxidation with ferric ion as catalyst, ultraviolet light is utilized to catalyze hydrogen peroxide to decompose to generate hydroxyl radical in high efficiency under acidic condition, so as to degrade organic matter fast and thoroughly. The photo-Fenton oxidation method has the advantages of no toxicity, safety, good stability, high catalytic activity, quick response, low energy consumption, reusability and the like. The process for treating the wastewater by adopting the photo-Fenton oxidation method has the advantages of high degradation speed, no degradation selectivity, mild reaction condition, less investment and low energy consumption, and can thoroughly oxidize organic matters in the wastewater into carbon dioxide and water without secondary pollution.
However, since t-butanol is a common organic radical scavenger, it has been reported that t-butanol reacts with hydroxyl radicals (OH) at a very low rate and is relatively prone to the production of inert intermediates. With Guan Shu butyl alcohol for other higher oxidation processes such as O 3 Inhibition of oxidation and Fenton oxidation has been reported in many cases. For example, miao H.F.et al use ozone to oxidize humic acid, the presence of tertiary butanol has an inhibitory effect, and the capture of hydroxyl radicals by tertiary butanol can separate the way of oxidizing organic matter directly by ozone. In addition, dao y.h. and Laat j.d. found that the presence of t-butanol also severely affected the degradation of organics in the course of degrading organics such as pesticides, herbicides, etc. in the Fenton reaction, which suggests that t-butanol inhibits the degradation of organics in the Fenton reaction. However, guan Shu butanol has less experimental involvement in the photocatalytic degradation of t-butanol wastewater due to the effects of organics in the photoelectrocatalysis process.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide a treatment method of high-concentration tertiary butanol wastewater, which can treat Gao Shu butanol wastewater with COD of 15000-30000mg/L to below 50mg/L, thereby achieving the purpose of direct discharge and generating no sludge.
In order to solve the technical problems, the method for treating the high-concentration tertiary butanol wastewater comprises the following steps:
(1) Adding acid liquor into tertiary butanol wastewater to be treated to adjust the pH value to be acidic, and adding potassium hydrogen phthalate to be uniformly mixed;
(2) Heating the reaction feed liquid to 45-60 ℃, continuously adding the catalyst and hydrogen peroxide, and fully and uniformly mixing;
(3) And starting ultraviolet light equipment to perform photo-Fenton oxidation reaction, and degrading the tertiary butanol wastewater.
Specifically, in the step (1), the potassium hydrogen phthalate is added at a concentration of 10-30mg/L, preferably 15-25mg/L. The potassium hydrogen phthalate can be adsorbed on the surface of the electrode, has absolute advantage compared with tertiary butanol, can avoid the excessive capture of tertiary butanol on hydroxyl radicals on the surface of the electrode, lightens the inhibition effect of tertiary butanol on photoelectrocatalytic degradation, and improves the degradation efficiency of tertiary butanol.
Specifically, in the step (1), the pH value of the tertiary butanol wastewater is adjusted to be 1.5-4.5, and the preferred pH value range is 2.0-3.0.
Specifically, in the step (1), the acid solution includes concentrated sulfuric acid.
Specifically, in the step (2), the catalyst comprises ferric trichloride, and the adding concentration is 40-80mg/L, preferably 55-70mg/L. The ferric trichloride is preferably prepared into 30% aqueous solution for use.
Specifically, in the step (2), the addition amount of the hydrogen peroxide is 8-18v/v% of the volume of the tertiary butanol wastewater to be treated, and the addition concentration is preferably 10-15%.
Specifically, in the step (3), the power of the ultraviolet light equipment is controlled to be 1.6-4.0KW, the wavelength of the ultraviolet light is 180-420nm, and the preferable power application range is 2.0-3.0KW.
Specifically, the hydrogen peroxide is added step by step, and a circulating pump is started to continuously supplement the hydrogen peroxide according to the residual amount of the hydrogen peroxide in the reaction feed liquid so as to maintain the normal operation of the reaction.
In the reaction process, the COD value of the wastewater is tested to infer the reaction progress by using H 2 O 2 And determining the residual hydrogen peroxide by the test paper, and determining the hydrogen peroxide supplementing amount according to the COD value and the residual hydrogen peroxide so as to maintain the normal operation of the reaction until the COD value of the wastewater reaches a target value.
Specifically, in the step (3), the method further comprises a step of continuously supplementing the acid solution according to the pH value of the reaction solution in the reaction process so as to maintain the reaction solution to be acidic.
Specifically, in the step (1), the COD value of the tertiary butanol wastewater is 15000-30000mg/L.
The invention relates to a tertiary butanol wastewater treatment method, which adopts a photo-Fenton oxidation combined process to treat tertiary butanol wastewater with COD of 15000-30000mg/L, adopts ferric ion as a catalyst, and ultraviolet light efficiently catalyzes hydrogen peroxide to decompose to generate hydroxyl free radicals with strong oxidability under an acidic condition, and the basic principle is as follows:
H 2 O 2 +UV→2·OH；
Fe 3+ can hydrolyze under ultraviolet light and acidic condition to generate hydroxyl radical Fe (OH) 2+ ，Fe(OH) 2+ Can be converted into Fe under the action of ultraviolet light 2+ Simultaneously generating OH;
Fe(OH) 2+ →Fe 2+ +·OH；
Fe 2+ and H is 2 O 2 Then Fenton reaction is carried out;
the OH generated by the above reaction can react with organic HRH to generate organic free radicals:
HRH+·OH→H 2 O+RH·；
RH·+O 2 →OORH·；
i.e. the oxidation reaction intermediate contains an organic acid.
Therefore, in the whole photo-Fenton oxidation reaction process, the pH of the reaction feed liquid is in a descending trend, the generated organic acid can maintain an acidic environment, and the generated OH enables the organic molecules to open or break chains, so that the purposes of reducing the concentration of the organic matters and improving the biodegradability of sewage are achieved.
According to the treatment method of the high-concentration tertiary butanol wastewater, on the basis of the traditional photo-Fenton oxidation process, by adding a certain amount of potassium hydrogen phthalate, the adsorption of the potassium hydrogen phthalate on the electrode surface has absolute advantages compared with that of tertiary butanol, the excessive capture of tertiary butanol on hydroxyl radicals on the electrode surface can be avoided, the inhibition effect of tertiary butanol on photo-catalytic degradation is lightened, the tertiary butanol degradation efficiency is effectively improved, the high-concentration tertiary butanol wastewater with COD of 15000-30000mg/L is treated to be less than 50mg/L, the purpose of direct discharge is achieved, and H in the photo-Fenton oxidation reaction process can be reduced 2 O 2 And significantly shortens the duration of the photo-Fenton oxidation reaction.
According to the treatment method of the high-concentration tertiary butanol wastewater, the ferric iron compound is used as the catalyst, so that the catalyst consumption is small, no iron oxide is generated, and secondary pollution is avoided; moreover, the whole process has short treatment flow, can meet different drainage index requirements by controlling the reaction process, is easy to realize automatic control, can eliminate the defects that a biochemical system is easy to be impacted and cannot reach the standard stably, and is suitable for industrial popularization.
Detailed Description
In the following embodiments of the present invention, the related components include:
the ferric trichloride is prepared into an aqueous solution with the mass concentration of 30 wt%;
the H is 2 O 2 The effective concentration of (2) is 30%, and the product is produced by the metallocene reagent factory in Tianjin city.
Example 1
Taking a certain amount of tertiary butanol wastewater with COD of 21100mg/L, adding concentrated sulfuric acid to adjust the pH value of the wastewater to 3.5, adding potassium hydrogen phthalate into the wastewater according to the adding amount of 20mg/L, and fully and uniformly mixing; starting a circulating pump, starting a circulating cooling system to heat the wastewater to be treated to 55 ℃, adding ferric trichloride and hydrogen peroxide (30%) according to the adding amount of 40mg/L and the adding concentration of 0.75v/v%, and fully mixing; then turn onAnd (3) performing a photo-Fenton oxidation reaction by an ultraviolet light source (180-420 nm), and controlling the power of the equipment to be 1.6KW. In the reaction process, the COD value of the wastewater is measured on line to infer the reaction progress, and H 2 O 2 And determining the residual hydrogen peroxide by the test paper, determining the hydrogen peroxide addition according to the COD value and the residual hydrogen peroxide to maintain the normal operation of the reaction, and adjusting the pH value of the wastewater to be about 3.5 by adding acid until the COD value of the wastewater reaches a target value.
After detection, after the photo-Fenton oxidation is carried out for 3 hours, COD in the wastewater is reduced to 4640mg/L, and the addition amount of hydrogen peroxide is 5.5%; after oxidation is carried out for 6 hours, COD is reduced to 1220mg/L, and the addition amount of hydrogen peroxide is 9.5%; after oxidation is carried out for 9 hours, COD is reduced to 760mg/L, and the addition amount of hydrogen peroxide is 10%; after 12h of oxidation, COD in the wastewater is reduced to 260mg/L, and the addition amount of hydrogen peroxide is 10.7%; after 14h of oxidation, COD in the wastewater is reduced to 44mg/L, and the addition amount of hydrogen peroxide is 12%. Therefore, the treatment method of the tertiary butanol wastewater has higher wastewater treatment efficiency, and no sludge is generated in the whole test process.
Comparative example 1
Taking a certain amount of tertiary butanol wastewater with COD of 21100mg/L, and adding concentrated sulfuric acid to adjust the pH value of the wastewater to 3.5; starting a circulating pump, starting a circulating cooling system to heat the wastewater to be treated to 55 ℃, and adding ferric trichloride according to the adding amount of 40mg/L and hydrogen peroxide according to the adding concentration of 0.75% (v/v); then an ultraviolet light source (180-420 nm) is started to carry out a photo-Fenton oxidation reaction, the power of equipment is controlled to be 1.6KW, the COD value and the residual hydrogen peroxide are measured on line in the test process to determine the hydrogen peroxide supplementing amount, and the pH value of the wastewater is regulated to be about 3.5 by adding acid.
After the photo-Fenton oxidation is carried out for 3 hours, the COD in the wastewater is reduced to 5820mg/L, and the addition amount of hydrogen peroxide is 5.5%; after oxidation is carried out for 6 hours, COD is reduced to 2050mg/L, and the addition amount of hydrogen peroxide is 10.5%; after oxidation is carried out for 9 hours, COD is reduced to 1120mg/L, and the addition amount of hydrogen peroxide is 11%; after the oxidation is carried out for 12 hours, COD in the wastewater is reduced to 420mg/L, and the addition amount of hydrogen peroxide is 12%; after 14h of oxidation, COD in the wastewater is reduced to 105mg/L, and the addition amount of hydrogen peroxide is 15%; after oxidation had been carried out for 15 hours, the COD was reduced to 49mg/L. No sludge is produced in the whole reaction process.
Example 2
Taking a certain amount of tertiary butanol wastewater with COD of 21100mg/L, adding concentrated sulfuric acid to adjust the pH value of the wastewater to 2.3, adding potassium hydrogen phthalate into the wastewater according to the adding amount of 25mg/L, and fully and uniformly mixing; starting a circulating pump, starting a circulating cooling system to heat the wastewater to be treated to 50 ℃, adding ferric trichloride and hydrogen peroxide (30%) according to the adding amount of 40mg/L and the adding concentration of 0.75v/v%, and fully mixing; then an ultraviolet light source (180-420 nm) is started to carry out photo-Fenton oxidation reaction, and the power of the equipment is controlled to be 2.0KW. In the reaction process, the COD value of the wastewater is measured on line to infer the reaction progress, and H 2 O 2 And determining the residual hydrogen peroxide by the test paper, determining the hydrogen peroxide addition according to the COD value and the residual hydrogen peroxide to maintain the normal operation of the reaction, and adjusting the pH value of the wastewater to be about 2.3 by adding acid until the COD value of the wastewater reaches a target value.
After detection, after the photo-Fenton oxidation is carried out for 3 hours, COD in the wastewater is reduced to 3880mg/L, and the addition amount of hydrogen peroxide is 5.5%; after oxidation is carried out for 6 hours, COD is reduced to 1160mg/L, and the addition amount of hydrogen peroxide is 9.5%; after oxidation is carried out for 9 hours, COD is reduced to 550mg/L, and the addition amount of hydrogen peroxide is 10%; after 12h of oxidation, COD in the wastewater is reduced to 47mg/L, and the addition amount of hydrogen peroxide is 11%. Therefore, the treatment method of the tertiary butanol wastewater has higher wastewater treatment efficiency, and no sludge is generated in the whole test process.
Comparative example 2
Taking a certain amount of tertiary butanol wastewater with COD of 21100mg/L, and adding concentrated sulfuric acid to adjust the pH value of the wastewater to 2.3; starting a circulating pump, starting a circulating cooling system to heat the wastewater to be treated to 50 ℃, and adding ferric trichloride according to the adding amount of 40mg/L and hydrogen peroxide according to the adding concentration of 0.75% (v/v); then an ultraviolet light source (180-420 nm) is started to carry out a photo-Fenton oxidation reaction, the power of equipment is controlled to be 2.0KW, the COD value and the residual hydrogen peroxide are measured on line in the test process to determine the hydrogen peroxide supplementing amount, and the pH value of the wastewater is regulated to be about 2.3 by adding acid.
After the photo-Fenton oxidation is carried out for 3 hours, the COD in the wastewater is reduced to 4260mg/L, and the addition amount of hydrogen peroxide is 5.5%; after oxidation is carried out for 6 hours, COD is reduced to 1500mg/L, and the addition amount of hydrogen peroxide is 10.5%; after oxidation is carried out for 9 hours, COD is reduced to 830mg/L, and the addition amount of hydrogen peroxide is 11%; after the oxidation is carried out for 12 hours, COD in the wastewater is reduced to 169mg/L, and the addition amount of hydrogen peroxide is 12%; after 14h of oxidation, COD in the wastewater is reduced to 50mg/L, and the addition amount of hydrogen peroxide is 15%; after continuing the oxidation for 20min, the COD was reduced to 30mg/L. No sludge is produced in the test process.
Example 3
Taking a certain amount of tert-butanol wastewater with COD of 20145mg/L, adding concentrated sulfuric acid to adjust the pH value of the wastewater to 4.0, adding potassium hydrogen phthalate into the wastewater according to the adding amount of 30mg/L, and fully mixing; starting a circulating pump, starting a circulating cooling system to heat the wastewater to be treated to 45 ℃, adding ferric trichloride and hydrogen peroxide (30%) according to the adding amount of 60mg/L and the adding concentration of 1.0% (v/v), and fully mixing; then, an ultraviolet light source is started to carry out photo-Fenton oxidation reaction, and the power of the equipment is controlled to be 2.0KW. In the reaction process, the COD value of the wastewater is measured on line to infer the reaction progress, and H 2 O 2 And determining the residual hydrogen peroxide by the test paper, determining the hydrogen peroxide addition according to the COD value and the residual hydrogen peroxide to maintain the normal operation of the reaction, and adjusting the pH value of the wastewater to be about 4.0 by adding acid until the COD value of the wastewater reaches a target value.
After 3.0h of photo-Fenton oxidation, COD in the wastewater is reduced to 3220mg/L, and the addition amount of hydrogen peroxide is 6.5%; after oxidation is carried out for 4.0h, COD is reduced to 1860mg/L, and the addition amount of hydrogen peroxide is 8.5%; after oxidation is carried out for 6.0h, COD in the wastewater is reduced to 362mg/L, and the addition amount of hydrogen peroxide is 10%; after 8.0h of oxidation, COD in the wastewater is reduced to 49mg/L, and the addition amount of hydrogen peroxide is 11.5%. Therefore, the treatment method of the tertiary butanol wastewater has higher wastewater treatment efficiency, and no sludge is generated in the whole test process.
Comparative example 3
Taking a certain amount of tertiary butanol wastewater with COD of 20145mg/L, and adding concentrated sulfuric acid to adjust the pH value of the wastewater to 4.0; starting a circulating pump, starting a circulating cooling system to heat the wastewater to be treated to 45 ℃, and adding ferric trichloride and hydrogen peroxide according to the adding amount of 60mg/L and the adding concentration of 1.0% (v/v) respectively; then the ultraviolet light source is started to carry out the photo-Fenton oxidation reaction. The power of the control device is 2.0KW. In the test process, the COD value and the residual hydrogen peroxide are measured on line to determine the hydrogen peroxide supplementing amount, and the pH value of the wastewater is regulated to be about 4.0 by adding acid.
After 3.0h of photo-Fenton oxidation, COD in the wastewater is reduced to 3550mg/L, and the addition amount of hydrogen peroxide is 6.5%; after oxidation is carried out for 4.0h, COD is reduced to 2045mg/L, and the addition amount of hydrogen peroxide is 8.5%; the oxidation is carried out for 6.0h, the COD in the wastewater is reduced to 446mg/L, and the addition amount of hydrogen peroxide is 14.4%; after oxidation is carried out for 8.0h, COD in the wastewater is reduced to 72mg/L, and the addition amount of hydrogen peroxide is 16.2%; after oxidation is carried out for 9 hours, COD in the wastewater is reduced to 47mg/L, and the addition amount of hydrogen peroxide is 17%. No sludge is produced in the test process.
Example 4
Taking a certain amount of tertiary butanol wastewater with COD of 20145mg/L, adding concentrated sulfuric acid to adjust the pH value of the wastewater to 2.5, adding potassium hydrogen phthalate into the wastewater according to the adding amount of 20mg/L, and fully and uniformly mixing; starting a circulating pump, starting a circulating cooling system to heat the wastewater to be treated to 53 ℃, adding ferric trichloride and hydrogen peroxide (30%) according to the adding amount of 60mg/L and the adding concentration of 1.0% (v/v), and fully mixing; then, an ultraviolet light source is started to carry out photo-Fenton oxidation reaction, and the power of the equipment is controlled to be 3.0KW. In the reaction process, the COD value of the wastewater is measured on line to infer the reaction progress, and H 2 O 2 And determining the residual hydrogen peroxide by the test paper, determining the hydrogen peroxide addition according to the COD value and the residual hydrogen peroxide to maintain the normal operation of the reaction, and adjusting the pH value of the wastewater to be about 2.5 by adding acid until the COD value of the wastewater reaches a target value.
After the measurement, the COD in the wastewater is reduced to 2960mg/L and the addition amount of hydrogen peroxide is 6.5% after the photo-Fenton oxidation is carried out for 3.0 h; after oxidation is carried out for 4.0 hours, COD in the wastewater is reduced to 1340mg/L, and the addition amount of hydrogen peroxide is 8.5%; after oxidation is carried out for 6.0h, COD is reduced to 260mg/L, and the addition amount of hydrogen peroxide is 10%; after 7 hours of oxidation, COD in the wastewater is reduced to 43mg/L, and the addition amount of hydrogen peroxide is 10.5%. Therefore, the treatment method of the tertiary butanol wastewater has higher wastewater treatment efficiency, and no sludge is generated in the whole test process.
Comparative example 4
Taking a certain amount of tertiary butanol wastewater with COD of 20145mg/L, and adding concentrated sulfuric acid to adjust the pH value of the wastewater to 2.5; starting a circulating pump, starting a circulating cooling system to heat the wastewater to be treated to 53 ℃, and adding ferric trichloride and hydrogen peroxide according to the adding amount of 60mg/L and the adding concentration of 1.0% (v/v) respectively; then, an ultraviolet light source is started to carry out photo-Fenton oxidation reaction, and the power of the equipment is controlled to be 3.0KW. In the test process, the COD value and the residual hydrogen peroxide are measured on line to determine the hydrogen peroxide supplementing amount, and the pH value of the wastewater is regulated to be about 2.5 by adding acid.
After the measurement, the COD in the wastewater is reduced to 3250mg/L and the addition amount of hydrogen peroxide is 6.5% after the photo-Fenton oxidation is carried out for 3.0 h; after 4.0 hours of oxidation, COD in the wastewater is reduced to 1990mg/L, and the addition amount of hydrogen peroxide is 8.5%; after oxidation is carried out for 6.0h, COD is reduced to 402mg/L, and the addition amount of hydrogen peroxide is 14.4%; after oxidation is carried out for 8 hours, COD in the wastewater is reduced to 46mg/L, and the addition amount of hydrogen peroxide is 16.2%. No sludge is produced in the test process.
Therefore, the treatment method of the invention not only can treat the high-concentration tertiary butanol wastewater with COD of 15000-30000mg/L to less than 50mg/L to achieve the purpose of direct discharge, but also can reduce H in the process of photo-induced Fenton oxidation reaction 2 O 2 And significantly shortens the duration of the photo-Fenton oxidation reaction.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims (10)

1. The method for treating the high-concentration tertiary butanol wastewater is characterized by comprising the following steps of:
(1) Adding acid liquor into tertiary butanol wastewater to be treated to adjust the pH value to be acidic, and adding potassium hydrogen phthalate to be uniformly mixed;
(2) Heating the reaction feed liquid to 45-60 ℃, continuously adding the catalyst and hydrogen peroxide, and fully and uniformly mixing;
(3) And starting ultraviolet light equipment to perform photo-Fenton oxidation reaction, and degrading the tertiary butanol wastewater.
2. The method for treating high-concentration t-butanol wastewater according to claim 1, wherein in said step (1), the concentration of potassium hydrogen phthalate added is 10-30mg/L.
3. The method for treating high-concentration t-butanol wastewater according to claim 1 or 2, wherein in said step (1), the pH of said t-butanol wastewater is adjusted to 1.5 to 4.5.
4. A method for treating high-concentration t-butanol wastewater according to any of claims 1-3 and wherein said acid solution in said step (1) comprises concentrated sulfuric acid.
5. The method for treating high-concentration t-butanol wastewater according to any one of claims 1-4, wherein in said step (2), said catalyst comprises ferric trichloride, and the concentration of said catalyst is 40-80mg/L.
6. The method for treating high-concentration t-butanol wastewater according to any one of claims 1 to 5, wherein in said step (2), said hydrogen peroxide is added in an amount of 8 to 18v/v% based on the volume of t-butanol wastewater to be treated.
7. The method for treating high-concentration t-butanol wastewater according to any one of claims 1-6, wherein in said step (3), the power of said ultraviolet light device is controlled to be 1.6-4.0KW, and the wavelength of the ultraviolet light is controlled to be 180-420/nm.
8. The method for treating high-concentration t-butanol wastewater according to any one of claims 1 to 7, wherein hydrogen peroxide is added stepwise, and a circulation pump is started to continuously supplement hydrogen peroxide according to the residual amount of hydrogen peroxide in the reaction liquid, so as to maintain the normal progress of the reaction.
9. The method for treating high-concentration t-butanol wastewater according to any one of claims 1 to 8, wherein said step (3) further comprises the step of continuously replenishing said acid solution during the reaction according to the pH of the reaction solution to maintain the reaction solution to be acidic.
10. The method for treating high-concentration t-butanol wastewater according to any one of claims 1 to 9, wherein in said step (1), the COD value of said t-butanol wastewater is 15000 to 30000mg/L.
CN202111275043.7A 2021-10-29 2021-10-29 High-concentration tert-butyl alcohol wastewater treatment method Pending CN116062871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111275043.7A CN116062871A (en) 2021-10-29 2021-10-29 High-concentration tert-butyl alcohol wastewater treatment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111275043.7A CN116062871A (en) 2021-10-29 2021-10-29 High-concentration tert-butyl alcohol wastewater treatment method

Publications (1)

Publication Number Publication Date
CN116062871A true CN116062871A (en) 2023-05-05

Family

ID=86178923

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111275043.7A Pending CN116062871A (en) 2021-10-29 2021-10-29 High-concentration tert-butyl alcohol wastewater treatment method

Country Status (1)

Country Link
CN (1) CN116062871A (en)

Similar Documents

Publication Publication Date Title
Tang et al. Elimination of humic acid in water: comparison of UV/PDS and UV/PMS
CN101786756B (en) Process method for treating hardly-biodegradable organic wastewater
US20220112106A1 (en) Method for Processing Wastewater Having Organics Even Together with High-Concentration Ammonia-Nitrogen and Apparatus Thereof
CN105461135A (en) Pretreatment technology for high-concentration refractory organic petrochemical wastewater
JPH0480758B2 (en)
CN114212921B (en) Treatment method of landfill leachate
JPH0975993A (en) Treatment of organic matter-containing waste water and device therefor
CN103482751A (en) Application of biodegradable chelating agent EDDS (Ethylenediaminedisuccinic Acid) to treatment on non-degradable organic wastewater
KR20010050843A (en) Method of Treating Waste Water and Apparatus Therefor
CN102674525B (en) Method for preparing cathode for cathode electro-fenton process
CN116062871A (en) High-concentration tert-butyl alcohol wastewater treatment method
JP2000288547A (en) Method and apparatus for purifying wastewater
KR102497835B1 (en) Composition for Fenton oxidation, and a method for the oxidative degradation of organic pollutants using the same
CN115340232A (en) Organic wastewater treatment device and method
JP2541800B2 (en) Method for treating water containing organic matter
JPS62176595A (en) Method for removing organic substance in waste water
JPH06178995A (en) Anaerobic digestion treatment of organic waste water
JP3803590B2 (en) Hydrogen peroxide residual concentration controller
JPS5930153B2 (en) Treatment method for wastewater containing sterilization/disinfectant
CN111533350A (en) Method for reducing salt content in wastewater after Fenton oxidation
JPH11347576A (en) Method and apparatus for treating water
KR100208956B1 (en) METHOD FOR TREATING WASTEWATER BY AN ELECTRON BEAM AFTER ADJUSTING pH
Kamenev11 et al. Aerobic bio-oxidation combined with ozonation in the treatment of landfill leachates
CN1353090A (en) Process and apparatus for treating waste acidifying liquid in oil field
JPH08267077A (en) High degree treating method of waste water

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination