CN108059228A - A kind of method of sulfamido antiseptic in removal livestock breeding wastewater - Google Patents

A kind of method of sulfamido antiseptic in removal livestock breeding wastewater Download PDF

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Publication number
CN108059228A
CN108059228A CN201711389799.8A CN201711389799A CN108059228A CN 108059228 A CN108059228 A CN 108059228A CN 201711389799 A CN201711389799 A CN 201711389799A CN 108059228 A CN108059228 A CN 108059228A
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China
Prior art keywords
breeding wastewater
livestock breeding
antiseptic
sulfamido
cao
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CN201711389799.8A
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Chinese (zh)
Inventor
陈家斌
黄天寅
卢建
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Suzhou University of Science and Technology
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Suzhou University of Science and Technology
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Priority to CN201711389799.8A priority Critical patent/CN108059228A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/306Pesticides
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/38Organic compounds containing nitrogen
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/40Organic compounds containing sulfur
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/20Nature of the water, waste water, sewage or sludge to be treated from animal husbandry

Abstract

The present invention relates to a kind of methods for removing sulfamido antiseptic in livestock breeding wastewater:At normal temperatures and pressures into the livestock breeding wastewater containing sulfamido antiseptic, add in a certain amount of trivalent iron salt and Fe is provided3+, chelating agent and CaO2, stir evenly, maintain to react 30 45min under conditions of pH=3 4, you can oxidation removal sulfamido antiseptic.The present invention is based on chelant ties Fe3+It is catalyzed the principle that calper calcium peroxide generates hydroxyl radical free radical, the Fe developed3+/ chelating agent/CaO2System is better than Fe to the degradation effect of organic matter2+/H2O2System, it can carry out at ambient temperature, degradation rate is fast, oxidation processes are efficient, removal effect is good, non-secondary pollution, catalyst service life are long, treated simultaneously, and livestock breeding wastewater has higher biodegradability, it is easy to operate, there is green, high efficiency, practicability, have broad application prospects in terms of organic pollutant wastewater processing.

Description

A kind of method of sulfamido antiseptic in removal livestock breeding wastewater
Technical field
The present invention relates to cultivating wastewater purification fields, and in particular to a kind of that Fe is complexed using different chelating agents3+It is catalyzed peroxide Change the method for sulfamido antiseptic in calcium degradation livestock breeding wastewater.
Background technology
Livestock breeding wastewater is mainly made of urine, remaining excrement, food-residue and flushing water etc., and some plant areas also wrap Include the sanitary wastewater generated in production process.Livestock breeding wastewater is mainly characterized by:Organic concentration is high, suspended matter is more, color Degree is deep, ammonia-nitrogen content is high, and contains substantial amounts of bacterium.The basic index of farm's breeding wastewater is sampled on the spot:COD(640- 750mg/L)、NH3-N(350mg/L).Due to COD, NH in waste water3- N is higher, and conventional processes processing time is longer and handles Effect is general, and cannot more meet increasingly strict wastewater discharge standard.
Sulfa drugs (Sulfonamides, SAs) refers to the total of a kind of drug with P-aminobenzene-sulfonamide structure Claim, be a kind of chemotherapeutic agent for being used to prevent and treat bacterial infection disease.Sulfa antibiotics on livestock and poultry breeding industry Using relatively broad, sulfa antibiotics are mainly used for prophylactic treatment Animal diseases and promote animal in scale animal-breeding Growth.Due to the fast development of current livestock and poultry breeding industry, cause the sulfa drugs demand for being mainly used for livestock and poultry breeding industry big Big to increase, a large amount of antibiotic are discharged into natural water with breeding wastewater, threaten human health.Common antibiotic minimizing technology master There are biological treatment, chloridising, advanced oxidation processes, electrochemical treatment, absorption method, microbial degradation method and several method Combination, compared with other several minimizing technologies, chemical oxidization method is shorter in process cycle, and cost is relatively low, and environment is broken It is bad small, and for being generally difficult to handle treatment effect of the pollutant chemistry oxidation with more efficient stabilization.Based on traditional livestock and poultry The limitation of breeding wastewater chemical remediation technology, high-level oxidation technology (Advanced Oxidation Processes) is in livestock and poultry It has been received more and more attention in breeding wastewater in the removal of sulfamido antiseptic.
In recent years, Fenton oxidation method is widely used in containing petroleum hydrocarbon, dyestuff, pesticide, surface active agent wastewater, garbage filter Liquid.With industrialization and the fast development of chemurgy, traditional Fenton oxidation method handles the drawbacks of waste water gradually shows itself, It is increasingly difficult to meet standard of drainage.It is dirty in removal difficult degradation based on the high-level oxidation technology of hydroxyl radical free radical (OH) in recent years Dye object is paid close attention to be subject to many scholars.With SO4 -It compares, OH has higher oxidation-reduction potential, can be efficiently and without choosing Remove to selecting property Recalcitrant chemicals in environment.Under room temperature, calper calcium peroxide (Calcium peroxide, CP) dissolves production in water Raw H2O2Relatively stablize, under the conditions of ultraviolet radiation, ozone and transition metal ions etc., can just be activated generating OH.However Ultraviolet radiation, ozone activation energy consumption is big, financial cost is high, operation is excessively complicated, limit they in Practical Project Using.In contrast, since the toxicity of transition metal ions is low, consumption is few, it is efficient the characteristics of and be generally used as H2O2Urge Agent.Catalyst is made using transition metal ions, the effect of degradation of contaminant is fine, but part metals ion can make environment Into secondary pollution or there are other drawbacks, such as Fe2+Although catalysis CaO can also be applied to2, but react too fast, it reduces The utilization rate of OH is either required for substantial amounts of medicament and fixed pH to maintain reaction in pure water or livestock breeding wastewater Progress, in addition, Fe2+It is perishable, it is unfavorable for preserving.In summary, how rapidly, efficiently remove livestock breeding wastewater Middle antiseptic is that the technical problem solved is badly in need of in this field at present.
The content of the invention
The purpose of the present invention provides a kind of different chelating agents of utilization and is complexed aiming at above-mentioned deficiency of the prior art Fe3+It is catalyzed the method for sulfamido antiseptic in calper calcium peroxide degradation livestock breeding wastewater.Specifically, at normal temperatures and pressures to containing In the livestock breeding wastewater of sulfamido antiseptic, a certain amount of Fe is added in3+, chelating agent and CaO2, stir evenly, in appropriate pH A period of time is reacted under the conditions of value, you can oxidation removal sulfamido antiseptic.
To achieve these goals, Fe is complexed using different chelating agents the present invention provides a kind of3+It is catalyzed calper calcium peroxide drop The method for solving sulfamido antiseptic in livestock breeding wastewater, includes the following steps:
Into the livestock breeding wastewater containing sulfamido antiseptic, a certain amount of Fe is added in3+, chelating agent and CaO2, stirring Uniformly, maintain to react 3045min under conditions of pH=3-4, you can oxidation removal sulfamido antiseptic, the ferric ion Fe3+It is provided by trivalent iron salt.
In above-mentioned steps, trivalent iron salt is as catalyst, CaO2As oxidant;
In above-mentioned steps, chelating agent is OA (oxalic acid), NTA (nitrilotriacetic acid) or AA (ascorbic acid), is preferably AA (ascorbic acid);
In above-mentioned steps, trivalent iron salt is preferably Fe2(SO4)3
In above-mentioned steps, catalyst in livestock breeding wastewater:Chelating agent:The molar ratio of oxidant is 4: 1: (14~ 16), preferably 4: 1: 15;
In above-mentioned steps, the dosage of calper calcium peroxide is 0.404~0.461g/L, optimum dosage 0.433g/L;
In above-mentioned steps, the purity of the calper calcium peroxide is 75%;
In above-mentioned steps, the optimal pH of reaction is 3, and soda acid used in regulating system pH is respectively sulfuric acid and sodium hydroxide.
The present invention is with Fe3+As catalyst, OA, NTA, AA give up to livestock and poultry as oxidant as chelating agent, calper calcium peroxide Sulfamido antiseptic is degraded in breeding wastewater, and good removal effect can be obtained in practice.
CaO2It is important inorganic oxide, it is nontoxic, harmless and cheap, be easy to get, in environmental protection, aquaculture, herding, agriculture The numerous areas such as industry are widely used.The present invention for calper calcium peroxide decompose at normal temperatures generation OH rates it is slower, to having The degradation effect unobvious of machine object, by the study found that calper calcium peroxide in Fe3+It can stablize under the catalysis of this system of-chelating agent Hydroxyl radical free radical is persistently generated, so as to improve antiseptic treatment effect in livestock breeding wastewater.
The present invention includes following advantageous effect:
1. the present invention utilizes CaO2Instead of H2O2As oxidant, it can effectively inhibit H2O2Disproportionation decomposition, so as to Improve H2O2Utilization rate.CaO simultaneously2Grain size is small, specific surface area bigger, and with high reaction activity.Compared with H2O2, peroxidating Calcium is more stable in water body and slowly generates H2O2While also with O2Output, so as to reach the effect to contaminant degradation Fruit and treated breeding wastewater has higher biodegradability.OH and SO4 -Compared to higher oxidation-reduction potential, Can efficiently and non-selectivity remove Recalcitrant chemicals in environment.
2. the present invention utilizes Fe3+As catalyst, from different chelating agent complex catalysis CaO2OH is persistently generated, is avoided CaO2Addition catalyst is caused to lose activity, reduce the removal effect of pollutant.
3. calper calcium peroxide, ferric sulfate are at low cost in the present invention, while ferric sulfate, calper calcium peroxide are solid powder, are convenient for Transport, thus it is workable in practical engineering application.
To sum up, the present invention is based on chelant ties Fe3+The principle that calper calcium peroxide generates hydroxyl radical free radical is catalyzed, is developed Fe3+/ chelating agent/CaO2System is better than Fe to the degradation effect of organic matter2+/H2O2System can carry out at ambient temperature, degradation Rate is fast, oxidation processes are efficient, removal effect is preferable, and non-secondary pollution, catalyst service life are long, while after processing Livestock breeding wastewater have higher biodegradability, it is easy to operate, have green, high efficiency, practicability, in organic contamination It has broad application prospects in terms of object wastewater treatment.
Description of the drawings
Fig. 1 is in 50 μM/L Sulfamethoxazoles (SMZ) solution, same concentrations CaO2, different proportion Fe3+In AA pure water The degradation curve figure of SMZ.
Fig. 2 is the CaO in 50 μM/L Sulfamethoxazoles (SMZ) solution, various concentration2The SMZ in livestock breeding wastewater Degradation curve figure.
Fig. 3 is in 50 μM/L Sulfamethoxazoles (SMZ) solution, same concentrations Fe3+And CaO2, different chelating agent is in pure water The degradation curve figure of SMZ.
Fig. 4 is in 50 μM/L SMZ solution, same concentrations Fe3+And CaO2, different chelating agents SMZ in livestock breeding wastewater Degradation curve figure.
Specific embodiment
Below by several embodiments specific embodiment that the present invention will be described in detail, but not to the claim of the present invention Do any restriction.
Embodiment 1
By the ferric sulfate configured (0.04mol/L) and ascorbic acid (0.01mol/L) respectively by the molar ratio of the two It is measured for 4: 1,2: 1,1: 1,1: 2,0.0144g calper calcium peroxides is added separately in pure water (pH is not adjusted), is placed in and stirs It mixes and is stirred evenly on device, add in Sulfamethoxazole (SMZ) solution of the 0.001mol/L of 5mL, make the reaction that reaction system is final Volume is 100mL.Uniform stirring 30min at room temperature completes ferric sulfate and ascorbic acid different proportion in pure water medium Under the conditions of removal to sulfa antibiotics, concrete outcome is as shown in Figure 1, under the conditions of each ratio, the degradation rate of SMZ is respectively 100%th, 97%, 76%, 67%.It follows that when ferric sulfate and ascorbic acid molar ratio are 4: 1, the degradation for SMZ Best results.
Embodiment 2
The molar ratio that ferric sulfate and ascorbic acid are fixed in breeding wastewater is 4: 1, to CaO2Optimum dosage carries out Selection optimization.The ascorbic acid configured (0.01mol/L) and ferric sulfate (0.04mol/L) are measured to 4mL respectively to be added to In pure water, 0.0072g, 0.0144g, 0.0288g, 0.0433g, 0.0577g calper calcium peroxide are then measured respectively and is added separately to It in pure water (pH=3), is placed on blender and stirs evenly, add in Sulfamethoxazole (SMZ) solution of the 0.001mol/L of 5mL, The reaction volume for making reaction system final is 100mL.Uniform stirring 30min at room temperature completes various concentration calper calcium peroxide In the case of, removal of the system for sulfa antibiotics, concrete outcome such as Fig. 2.It can be seen that as calper calcium peroxide is thrown The increase of dosage, the degradation rate of SMZ is respectively 29.7%, 49.3%, 91.7%, 100%, 62.1%, therefore calper calcium peroxide Optimum dosage is 0.433g/L.
Embodiment 3
By the ferric sulfate configured (0.04mol/L) and chelating agent (0.01mol/L, herein chelating agent select respectively OA, NTA, AA) respectively measure 1.5mL and 0.0072g calper calcium peroxides be added separately in pure water (pH is not adjusted), be placed on blender It stirs evenly, adds in Sulfamethoxazole (SMZ) solution of the 0.001mol/L of 5mL, the reaction volume for making reaction system final is 100mL.Uniform stirring 30min at room temperature completes Fe3+、CaO2、Fe3++CaO2、Fe3+-OA-CaO2、Fe3+-AA-CaO2、 Fe3+-NTA-CaO2The removal of sulfa antibiotics, concrete outcome are as shown in Figure 3 in pure water medium.Adding in Fe2(SO4)3's In the case of, the degradation rate of SMZ levels off to 0;In the case of adding in calper calcium peroxide, the degradation ups and downs of SMZ, overall degradation rate becomes In 0;Add in calper calcium peroxide and Fe simultaneously3+In the case of, 30min is reacted, SMZ degradation rates are 100%;Simultaneously be separately added into NTA, OA, AA, calper calcium peroxide and Fe3+In the case of, compared to being promoted in the presence of no chelating agent, the wherein promotion of AA Effect is the most apparent, and SMZ degradation rates can reach 100% in 15min.C/C in figure0Represent the concentration and SMZ at SMZ moment The ratio of initial concentration, C be the SMZ moment concentration, C0For the initial concentration of SMZ.C/C0Value it is smaller, the degradation effect of SMZ Better.
Embodiment 4
Since ingredient is more complicated, it is necessary to adjust pH and improve pharmaceutical quantities and can be only achieved and quickly remove it in livestock breeding wastewater In sulfamido antiseptic.Therefore, by the ferric sulfate configured (0.04mol/L) and chelating agent, (0.01mol/L is chelated herein Agent selects OA, NTA, AA respectively) 4mL and 0.04325g calper calcium peroxides are measured respectively be added separately to the livestock and poultry cultivation of pH=3 give up It in water, is placed on blender and stirs evenly, add in Sulfamethoxazole (SMZ) solution of the 0.001mol/L of 5mL, make reaction system Final reaction volume is 100mL.Uniform stirring 30min at room temperature completes Fe3+、CaO2、Fe3++CaO2、Fe3+-OA- CaO2、Fe3+-AA-CaO2、Fe3+-NTA-CaO2The removal of sulfa antibiotics, concrete outcome in livestock breeding wastewater medium As shown in Figure 4.Adding in Fe2(SO4)3In the case of, the degradation rate of SMZ levels off to 0;In the case of adding in calper calcium peroxide, SMZ Degradation ups and downs, overall degradation rate tends to 0;Add in calper calcium peroxide and Fe simultaneously3+In the case of, react 30min, SMZ drops Solution rate is 100%;It is separately added into NTA, OA, AA, calper calcium peroxide and Fe simultaneously3+In the case of, exist compared to no chelating agent In the case of, in livestock breeding wastewater, the effect that chelating agent OA, NTA promote is not obvious, the addition effect promoting of wherein AA The most apparent, degradation rate can reach 100% in 15min, it was demonstrated that the system can also obtain well should in Practical Project With.
Embodiment provided above is the better embodiment of the present invention, only is used for facilitating illustrating the present invention, not to this hair The limitation of bright work in any form, any those of ordinary skill in the art, if putting forward skill not departing from the present invention In the range of art feature, using the equivalent embodiment locally changed or modified made by disclosed technology contents, and Without departing from the technical feature content of the present invention, in the range of still falling within the technology of the present invention feature.

Claims (10)

  1. A kind of 1. method for removing sulfamido antiseptic in livestock breeding wastewater, which is characterized in that include the following steps:To containing In the livestock breeding wastewater of sulfamido antiseptic, Fe is added in3+, chelating agent and CaO2, stir evenly, maintain the condition that pH is 3-4 Lower reaction 30-45min, you can oxidation removal sulfamido antiseptic;The ferric ion Fe3+It is provided by trivalent iron salt.
  2. 2. according to the method described in claim 1, it is characterized in that, the chelating agent is OA (oxalic acid), NTA (nitrilotriacetic acid) Or AA (ascorbic acid).
  3. 3. according to the method described in claim 2, it is characterized in that, the chelating agent is AA (ascorbic acid).
  4. 4. according to the method described in claim 1, it is characterized in that, the trivalent iron salt is ferric sulfate Fe2(SO4)3
  5. 5. according to the method described in claim 1, it is characterized in that, trivalent iron salt in the livestock breeding wastewater, chelating agent and CaO2Molar ratio be 4: 1: (14-16).
  6. 6. according to the method described in claim 5, it is characterized in that, trivalent iron salt in the livestock breeding wastewater, chelating agent and CaO2Molar ratio be 4: 1: 15.
  7. 7. according to the method described in claim 1, it is characterized in that, the dosage of calper calcium peroxide is in the livestock breeding wastewater 0.404-0.461g/L。
  8. 8. the method according to the description of claim 7 is characterized in that the dosage of calper calcium peroxide is in the livestock breeding wastewater 0.433g/L。
  9. 9. according to the method described in claim 1, it is characterized in that, the pH value be 3, reaction time 30min.
  10. 10. according to the method described in claim 1, it is characterized in that, the purity of the calper calcium peroxide is 75%.
CN201711389799.8A 2017-12-20 2017-12-20 A kind of method of sulfamido antiseptic in removal livestock breeding wastewater Pending CN108059228A (en)

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CN109354253A (en) * 2018-11-28 2019-02-19 同济大学 Method that is a kind of while removing pumping plant useless Organic substance in water and phosphorus
CN109453807A (en) * 2018-09-12 2019-03-12 东南大学 It is a kind of to utilize chelating agent MODIFIED Fe3O4The method of sulfa drugs in material catalytic degradation water body
CN109734172A (en) * 2019-03-14 2019-05-10 燕山大学 A kind of method of iron complexing class Fenton's reaction processing organic wastewater
CN111217481A (en) * 2020-01-20 2020-06-02 湖南金旅环保股份有限公司 Pharmaceutical wastewater pretreatment method combining iron-carbon micro-electrolysis and Fenton-like system
CN112142181A (en) * 2020-08-10 2020-12-29 南开大学 Method for treating antibiotics in water by pre-magnetizing zero-valent iron/chelating agent system
CN112624413A (en) * 2020-12-18 2021-04-09 中国科学院南京土壤研究所 Method for simultaneously converting tetracycline organic molecules and trivalent arsenic

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CN109453807A (en) * 2018-09-12 2019-03-12 东南大学 It is a kind of to utilize chelating agent MODIFIED Fe3O4The method of sulfa drugs in material catalytic degradation water body
CN109319915A (en) * 2018-10-18 2019-02-12 东南大学 A kind of Fe that chelating agent β-ADA is modified3O4Composite material and preparation method and go water removal in antibiotic pollution application
CN109319915B (en) * 2018-10-18 2021-06-11 东南大学 Chelating agent beta-ADA modified Fe3O4Composite material, preparation method thereof and application thereof in removing antibiotic pollution in water
CN109354253A (en) * 2018-11-28 2019-02-19 同济大学 Method that is a kind of while removing pumping plant useless Organic substance in water and phosphorus
CN109734172A (en) * 2019-03-14 2019-05-10 燕山大学 A kind of method of iron complexing class Fenton's reaction processing organic wastewater
CN111217481A (en) * 2020-01-20 2020-06-02 湖南金旅环保股份有限公司 Pharmaceutical wastewater pretreatment method combining iron-carbon micro-electrolysis and Fenton-like system
CN112142181A (en) * 2020-08-10 2020-12-29 南开大学 Method for treating antibiotics in water by pre-magnetizing zero-valent iron/chelating agent system
CN112624413A (en) * 2020-12-18 2021-04-09 中国科学院南京土壤研究所 Method for simultaneously converting tetracycline organic molecules and trivalent arsenic

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