CN111606510A - Heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system and method - Google Patents

Heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system and method Download PDF

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CN111606510A
CN111606510A CN202010448871.5A CN202010448871A CN111606510A CN 111606510 A CN111606510 A CN 111606510A CN 202010448871 A CN202010448871 A CN 202010448871A CN 111606510 A CN111606510 A CN 111606510A
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reactor
immobilized microorganism
wastewater
heterogeneous fenton
tank
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凌青云
高登友
顾国生
王磊
徐虎兵
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Huaian High Technology Institute Of Lanzhou University
Jiangsu Weiling Biochemistry Technology Co ltd
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Jiangsu Weiling Biochemistry Technology Co ltd
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    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
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    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/20Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • 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
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F1/722Oxidation by peroxides
    • 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
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    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00Use of specific compounds during water treatment
    • C02F2305/02Specific form of oxidant
    • C02F2305/026Fenton's reagent
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    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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    • C02F3/30Aerobic and anaerobic processes

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Abstract

The invention provides a heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system and a method, and particularly relates to the technical field of wastewater treatment, which comprises an acid regulating tank [1], a heterogeneous Fenton reactor [2], a degassing and neutralizing tank [3], a coagulating sedimentation tank [4], a regulating tank [5], an immobilized microorganism anaerobic reactor [6] and an immobilized microorganism aerobic reactor [7] which are sequentially connected through a water pipe; adding medium iron shavings for forming a solid-liquid heterogeneous Fenton catalytic oxidation system into the heterogeneous Fenton reactor [2 ]; the lower part of the adjusting tank (5) is provided with a perforation aeration device for adjusting the quality and quantity of the wastewater. The heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system is convenient to operate, high in working efficiency, low in cost and good in wastewater treatment effect, and has the advantages of reasonable process optimization, high treatment efficiency of refractory organic pollutants and stable treatment effect.

Description

Heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system and method
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to a heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system and method.
Background
The chemical wastewater has the characteristics of large water quantity and water quality change, poor biodegradability, difficult degradation, complex and various pollutants and the like, and generally adopts a proper pretreatment method, such as flocculation, micro-electrolysis, adsorption, photocatalysis and other processes, according to the water quality of the actual wastewater, to destroy the organic matters difficult to degrade in the wastewater and improve the biodegradability of the wastewater, and then the chemical wastewater is treated by a biological method.
Chinese patent "a comprehensive materialization processing unit of high concentration refractory industrial waste water" (CN 203602439U) discloses a processing unit, the device adopts multiple repeated oxidation, the process route is complicated, the optimization that biological treatment and subsequent process may play is not considered, "heterogeneous catalysis Fenton reagent oxidation fluidized bed-anaerobism biological fluidized bed advanced treatment coking waste water system [ CN201310209762.8 ]" can realize the economic and high-efficient treatment of coking waste water, the sewage after the treatment can reach the discharge standard, the technical processing unit is complicated, the process cost is high, the treatment efficiency to refractory organic matter waste water is low ". Chinese patent" a baffle plate reactor and its method for treating sewage [ CN 200610070012 ] "and" high concentration organic waste water processing unit [ CN200310100513.1] "relate to the many times of coupling of anaerobic process and aerobic process, have increased the complexity of the apparatus and the difficulty of operation management, and there is no advanced oxidation process.
The existing combined treatment process for chemical wastewater has the problems of complex and long process route, disordered combination mechanism, low removal efficiency of refractory characteristic organic pollutants, unstable process operation, incapability of meeting the requirement of environmental protection and the like.
Disclosure of Invention
The invention aims to provide a heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system which is convenient to operate, high in working efficiency, low in cost and good in wastewater treatment effect, and has the advantages of reasonable process optimization, high treatment efficiency of refractory organic pollutants and stable treatment effect.
The invention provides the following technical scheme:
a heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system comprises an acid regulating tank [1], a heterogeneous Fenton reactor [2], a degassing and neutralizing tank [3], a coagulating sedimentation tank [4], a regulating tank [5], an immobilized microorganism anaerobic reactor [6] and an immobilized microorganism aerobic reactor [7] which are sequentially connected through a water pipe;
adding medium iron shavings for forming a solid-liquid heterogeneous Fenton catalytic oxidation system into the heterogeneous Fenton reactor [2 ];
the lower part of the adjusting tank (5) is provided with a perforation aeration device for adjusting the quality and quantity of the wastewater;
preferably, the immobilized microorganism anaerobic reactor [6] and the immobilized microorganism aerobic reactor [7] respectively adopt an immobilized microorganism aerobic fluidized bed and an anaerobic fluidized bed, and polyurethane porous carrier immobilized high-efficiency degrading bacteria are added into the anaerobic fluidized bed and the aerobic fluidized bed;
a heterogeneous phase Fenton-polyurethane carrier immobilized microorganism wastewater treatment method comprises the following steps:
s1, firstly, inputting the wastewater into an acid regulating tank [1] through a pump, and regulating the pH value of the wastewater to 3-4 by using sulfuric acid;
s2, introducing the effluent of the acid adjusting tank [1] into a heterogeneous Fenton reactor [2], wherein a perforated aerator pipe is arranged at the bottom of the heterogeneous Fenton reactor [2], and adding 50% of wood shavings into the heterogeneous Fenton reactor [2 ]; under the action of an oxidant hydrogen peroxide solution, carrying out heterogeneous Fenton catalytic oxidation reaction to remove most organic pollutants, and respectively adding the hydrogen peroxide solution into the heterogeneous Fenton reactor [2] through a dosing system;
s3, feeding effluent of the heterogeneous Fenton reactor [2] into a degassing neutralization tank [3], removing a small amount of gas by stirring, adding a NaOH solution, and adjusting the pH value of the wastewater to 8.0-8.5;
s4, the effluent of the degassing and neutralizing tank [3] enters a coagulating sedimentation tank [4], a coagulant agent polyaluminium chloride is added through a coagulant agent feeding system, and the stirring speed is controlled to form large flocs; then enters a precipitation part, large flocs are formed to realize precipitation separation in a precipitation area, and precipitated sludge is treated by a sludge treatment system;
s5, collecting the low-concentration wastewater pretreated by the degassing neutralization tank [3] into a regulating tank [5], wherein a perforated aeration device is arranged at the lower part of the regulating tank [5] to regulate the water quality and water quantity;
s6, feeding the production wastewater homogenized by the regulating tank [5] into an immobilized microorganism anaerobic reactor [6], adding polyurethane carrier immobilized microorganisms with efficient strains into the anaerobic tank reactor, and prolonging the retention time of refractory organics in the immobilized microorganism reactor, so as to enhance the enrichment capacity of the carriers on the refractory organics, and enabling the carriers to be in a fluidized state through a plug flow stirrer;
s7, the water quality treated by the immobilized microorganism anaerobic reactor [6] enters an immobilized microorganism aerobic reactor [7], the high-efficiency degradation bacterial strain is fixed on the porous polyurethane carrier, and aeration is carried out through a micropore aeration device at the bottom, more than 98% of organic pollutants in the wastewater are removed, and the wastewater reaches the standard and is discharged.
Preferably, the wastewater passes through an acid regulating tank [1], the pH value of the wastewater is regulated to 3-4 by sulfuric acid, then the wastewater enters a heterogeneous Fenton reactor [2], iron shavings are added into the reactor, and the iron shavings and hydrogen peroxide form a solid-liquid heterogeneous Fenton catalytic oxidation reaction system, so that the hydrogen peroxide can be efficiently induced to generate hydroxyl radicals, and organic matters are promoted to be degraded and mineralized;
preferably, the adding amount of the polyurethane porous carrier in the immobilized microorganism anaerobic reactor [6] is 50-60% in volume percentage, and the hydraulic retention time is 96-124 h.
Preferably, anaerobic effluent flows through an aerobic reactor [7] of an immobilized microorganism aerobic reactor, the adding amount of a polyurethane porous carrier of the aerobic reactor is 30-40%, the hydraulic retention time is 48-96 h, and the treated wastewater reaches the standard and is discharged.
The invention has the beneficial effects that:
(1) the heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system provided by the invention has the advantages that the structural design is reasonable, and the integrated process is more efficient, more economical and more stable after combination. Meanwhile, anaerobic ammonium oxidation bacteria are fixed and cultured in a fluidized bed, so that the application range of the combined process can be widened; orderly and reasonably combining to ensure that the whole process is resistant to impact load; the whole combined process has the advantages of low sludge yield, low sludge treatment cost and good sewage treatment effect, and has important significance for environmental protection.
(2) The heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment technology provided by the invention has the advantages of reasonable process route, clear and orderly treatment mechanism, stable and reliable process operation and capability of ensuring the standard reaching, and the removal efficiency of characteristic organic pollutants difficult to degrade is higher than 98%.
(3) The combined process combines physicochemical treatment, biochemical treatment and guarantee treatment orderly and organically, and the heterogeneous Fenton reactor, the immobilized microorganism anaerobic reactor and the immobilized microorganism aerobic reactor support and promote each other in function, and the synergistic advanced oxidation technology and microorganism reinforcement are combined for use, so that a novel concept scheme for chemical wastewater treatment is provided.
(4) The invention provides a wastewater treatment system and a method thereof, which scientifically combine different advanced oxidation processes, wherein one advanced oxidation process is adopted, heterogeneous Fenton advanced oxidation can remove most characteristic organic pollutants, the other advanced oxidation process is adopted, biological oxidation is carried out in a postposition immobilized microorganism aerobic reactor, the front and the back oxidation mechanisms are different, the advanced oxidation process is a main removal process, the postposition treatment is guarantee treatment, the functions are all the best, and the division of labor is reasonable and ordered, so that the advanced oxidation efficiency of each section can be greatly improved, and the wastewater treatment effect is higher.
(5) The waste water treatment system provided by the invention has two times of biological strengthening treatment processes, namely immobilized microorganism anaerobic treatment and immobilized microorganism aerobic treatment, and both adopt immobilized microorganism waste water treatment technologies. The fixation of the high-efficiency degrading strain on the polyurethane carrier not only can greatly strengthen the biological treatment process, but also can lead the process to be suitable for treating high-nitrogen industrial wastewater, thereby widening the application range of the combined process.
(6) The treatment system provided by the invention has small combination difficulty, and the advanced oxidation process and the biological treatment strengthening means are effectively combined.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
Example 1
As shown in fig. 1, a heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system is specifically as follows: s1, adjusting the pH value of the wastewater to 3 by using sulfuric acid after the wastewater passes through an acid adjusting tank [1 ];
s2, feeding the mixture into a heterogeneous Fenton reactor [2], adding iron shavings into the reactor to form a solid-liquid heterogeneous Fenton catalytic oxidation reaction system with hydrogen peroxide, and efficiently inducing the hydrogen peroxide to generate hydroxyl radicals to promote organic matter degradation mineralization
S3, feeding effluent of the heterogeneous Fenton reactor [2] into a degassing neutralization tank [3], removing a small amount of gas by stirring, adding a NaOH solution, and adjusting the pH value of the wastewater to 8.0;
s4, the effluent of the degassing and neutralizing tank [3] enters a coagulating sedimentation tank [4], a coagulant agent polyaluminium chloride is added through a coagulant agent feeding system, and the stirring speed is controlled to form large flocs; then enters a precipitation part, large flocs are formed to realize precipitation separation in a precipitation area, and precipitated sludge is treated by a sludge treatment system;
s5, collecting the low-concentration wastewater pretreated by the degassing neutralization tank [3] into a regulating tank [5], wherein a perforated aeration device is arranged at the lower part of the regulating tank [5] to regulate the water quality and water quantity;
s6, the production wastewater homogenized by the regulating tank [5] enters an immobilized microorganism anaerobic reactor [6], the adding amount of polyurethane porous carriers in the immobilized microorganism anaerobic reactor [6] is 50% by volume percentage, and the hydraulic retention time is 96 h; polyurethane carrier immobilized microorganisms with efficient strains are added into an anaerobic tank reactor, the retention time of refractory organic matters in the immobilized microorganism reactor is prolonged, so that the enrichment capacity of the carrier on the refractory organic matters is enhanced, and the carrier is in a fluidized state through a plug flow stirrer;
s7, the water quality treated by the immobilized microorganism anaerobic reactor [6] enters an immobilized microorganism aerobic reactor [7], the high-efficiency degradation bacterial strain is fixed on the porous polyurethane carrier, aeration is carried out by the micropore aeration device at the bottom, the anaerobic effluent flows through the immobilized microorganism aerobic reactor [7], the adding amount of the aerobic reactor polyurethane porous carrier is 30%, the hydraulic retention time is 48h, more than 98% of organic pollutants in the wastewater are removed, and the wastewater reaches the standard and is discharged.
Example 2
As shown in fig. 1, a heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system is specifically as follows: s1, after the wastewater passes through an acid regulating tank [1], regulating the pH value of the wastewater to 3.5 by using sulfuric acid,
s2, feeding the mixture into a heterogeneous Fenton reactor [2], adding iron shavings into the reactor to form a solid-liquid heterogeneous Fenton catalytic oxidation reaction system with hydrogen peroxide, and efficiently inducing the hydrogen peroxide to generate hydroxyl radicals to promote organic matter degradation mineralization
S3, feeding effluent of the heterogeneous Fenton reactor [2] into a degassing neutralization tank [3], removing a small amount of gas by stirring, adding a NaOH solution, and adjusting the pH value of the wastewater to 8.3;
s4, the effluent of the degassing and neutralizing tank [3] enters a coagulating sedimentation tank [4], a coagulant agent polyaluminium chloride is added through a coagulant agent feeding system, and the stirring speed is controlled to form large flocs; then enters a precipitation part, large flocs are formed to realize precipitation separation in a precipitation area, and precipitated sludge is treated by a sludge treatment system;
s5, collecting the low-concentration wastewater pretreated by the degassing neutralization tank [3] into a regulating tank [5], wherein a perforated aeration device is arranged at the lower part of the regulating tank [5] to regulate the water quality and water quantity;
s6, feeding the production wastewater homogenized by the regulating tank [5] into an immobilized microorganism anaerobic reactor [6], wherein the adding amount of polyurethane porous carriers in the immobilized microorganism anaerobic reactor [6] is 55% by volume percentage, and the hydraulic retention time is 110 h; polyurethane carrier immobilized microorganisms with efficient strains are added into an anaerobic tank reactor, the retention time of refractory organic matters in the immobilized microorganism reactor is prolonged, so that the enrichment capacity of the carrier on the refractory organic matters is enhanced, and the carrier is in a fluidized state through a plug flow stirrer;
s7, the water quality treated by the immobilized microorganism anaerobic reactor [6] enters an immobilized microorganism aerobic reactor [7], the high-efficiency degradation bacterial strain is fixed on the porous polyurethane carrier, aeration is carried out by the micropore aeration device at the bottom, the anaerobic effluent flows through the immobilized microorganism aerobic reactor [7], the adding amount of the aerobic reactor polyurethane porous carrier is 35%, the hydraulic retention time is 72h, more than 98% of organic pollutants in the wastewater are removed, and the wastewater reaches the standard and is discharged.
Example 3
As shown in fig. 1, a heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system is specifically as follows: s1, after the wastewater passes through an acid regulating tank [1], regulating the pH value of the wastewater to 4 by using sulfuric acid,
s2, feeding the mixture into a heterogeneous Fenton reactor [2], adding iron shavings into the reactor to form a solid-liquid heterogeneous Fenton catalytic oxidation reaction system with hydrogen peroxide, and efficiently inducing the hydrogen peroxide to generate hydroxyl radicals to promote organic matter degradation mineralization
S3, feeding effluent of the heterogeneous Fenton reactor [2] into a degassing neutralization tank [3], removing a small amount of gas by stirring, adding a NaOH solution, and adjusting the pH value of the wastewater to 8.5;
s4, the effluent of the degassing and neutralizing tank [3] enters a coagulating sedimentation tank [4], a coagulant agent polyaluminium chloride is added through a coagulant agent feeding system, and the stirring speed is controlled to form large flocs; then enters a precipitation part, large flocs are formed to realize precipitation separation in a precipitation area, and precipitated sludge is treated by a sludge treatment system;
s5, collecting the low-concentration wastewater pretreated by the degassing neutralization tank [3] into a regulating tank [5], wherein a perforated aeration device is arranged at the lower part of the regulating tank [5] to regulate the water quality and water quantity;
s6, feeding the production wastewater homogenized by the regulating tank [5] into an immobilized microorganism anaerobic reactor [6], wherein the adding amount of polyurethane porous carriers in the immobilized microorganism anaerobic reactor [6] is 60% by volume percentage, and the hydraulic retention time is 124 h; polyurethane carrier immobilized microorganisms with efficient strains are added into an anaerobic tank reactor, the retention time of refractory organic matters in the immobilized microorganism reactor is prolonged, so that the enrichment capacity of the carrier on the refractory organic matters is enhanced, and the carrier is in a fluidized state through a plug flow stirrer;
s7, the water quality treated by the immobilized microorganism anaerobic reactor [6] enters an immobilized microorganism aerobic reactor [7], the high-efficiency degradation bacterial strain is fixed on the porous polyurethane carrier, aeration is carried out by the micropore aeration device at the bottom, the anaerobic effluent flows through the immobilized microorganism aerobic reactor [7], the adding amount of the aerobic reactor polyurethane porous carrier is 40%, the hydraulic retention time is 96h, more than 98% of organic pollutants in the wastewater are removed, and the wastewater reaches the standard and is discharged.
The process seeks a scientific method to solve the scientific problem of toxicity of the high-concentration difficult-to-degrade chemical wastewater to microorganisms around the water quality characteristics and the biological difficult-to-degrade commonalities of the high-concentration chemical wastewater industry, so that the chemical wastewater treatment process is convenient to manage, low in energy consumption, low in investment, low in operation cost and the optimal technical solution of overall process coordination and optimization; according to the invention, through a heterogeneous Fenton advanced oxidation process, the structure of organic pollutants can be destroyed, the toxicity is reduced, and the biodegradability is improved; the impact resistance and treatment efficiency of microorganisms on chemical wastewater are improved by an immobilized high-efficiency microbial technology, and the method has the characteristics of high efficiency, stability, low cost and simple operation management.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system is characterized in that: comprises an acid regulating tank [1], a heterogeneous Fenton reactor [2], a degassing and neutralizing tank [3], a coagulating sedimentation tank [4], a regulating tank [5], an immobilized microorganism anaerobic reactor [6] and an immobilized microorganism aerobic reactor [7] which are connected in sequence through a water pipe;
adding medium iron shavings for forming a solid-liquid heterogeneous Fenton catalytic oxidation system into the heterogeneous Fenton reactor [2 ];
the lower part of the adjusting tank (5) is provided with a perforation aeration device for adjusting the quality and quantity of the wastewater.
2. The heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system according to claim 1, wherein: the immobilized microorganism anaerobic reactor [6] and the immobilized microorganism aerobic reactor [7] respectively adopt an immobilized microorganism aerobic fluidized bed and an anaerobic fluidized bed, and polyurethane porous carriers are added into the anaerobic fluidized bed and the aerobic fluidized bed.
3. A heterogeneous phase Fenton-polyurethane carrier immobilized microorganism wastewater treatment method is characterized in that: the method comprises the following steps:
s1, firstly, inputting the wastewater into an acid regulating tank [1] through a pump, and regulating the pH value of the wastewater to 3-4 by using sulfuric acid;
s2, introducing the effluent of the acid adjusting tank [1] into a heterogeneous Fenton reactor [2], wherein a perforated aerator pipe is arranged at the bottom of the heterogeneous Fenton reactor [2], and adding 50% of wood shavings into the heterogeneous Fenton reactor [2 ]; adding hydrogen peroxide solution into the heterogeneous Fenton reactor [2] through a dosing system;
s3, feeding effluent of the heterogeneous Fenton reactor [2] into a degassing neutralization tank [3] and stirring, adding NaOH solution, and adjusting the pH value of the wastewater to 8.0-8.5;
s4, the effluent of the degassing and neutralizing tank [3] enters a coagulating sedimentation tank [4], a coagulant agent polyaluminium chloride is added through a coagulant agent feeding system, and the stirring speed is controlled to form large flocs; then enters a precipitation part, large flocs are formed to realize precipitation separation in a precipitation area, and precipitated sludge is treated by a sludge treatment system;
s5, collecting the low-concentration wastewater pretreated by the degassing neutralization tank [3] into a regulating tank [5], wherein a perforated aeration device for regulating water quality and water quantity is arranged at the lower part of the regulating tank [5 ];
s6, feeding the production wastewater homogenized by the regulating tank [5] into an immobilized microorganism anaerobic reactor [6], adding polyurethane carrier immobilized microorganisms with efficient strains into the anaerobic tank reactor, and prolonging the retention time of refractory organics in the immobilized microorganism reactor, so as to enhance the enrichment capacity of the carriers on the refractory organics, and enabling the carriers to be in a fluidized state through a plug flow stirrer;
s7, the water quality treated by the immobilized microorganism anaerobic reactor [6] enters an immobilized microorganism aerobic reactor [7], the high-efficiency degradation bacterial strain is fixed on the porous polyurethane carrier, and aeration is carried out through a micropore aeration device at the bottom, more than 98% of organic pollutants in the wastewater are removed, and the wastewater reaches the standard and is discharged.
4. The heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment method as claimed in claim 3, wherein: the method comprises the following steps of firstly enabling the wastewater to pass through an acid regulating tank [1], then regulating the pH of the wastewater to 3-4 by using sulfuric acid, then enabling the wastewater to enter a heterogeneous Fenton reactor [2], adding iron shavings into the reactor, and forming a heterogeneous Fenton catalytic oxidation reaction system consisting of solid and liquid with hydrogen peroxide.
5. The heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment method as claimed in claim 3, wherein: the adding amount of the polyurethane porous carrier in the immobilized microorganism anaerobic reactor [6] is 50-60% by volume percent, and the hydraulic retention time is 96-124 h.
6. The heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment method as claimed in claim 3, wherein: anaerobic effluent flows through an aerobic reactor [7] of an immobilized microorganism aerobic reactor, the dosage of a polyurethane porous carrier of the aerobic reactor is 30-40 percent, the hydraulic retention time is 48-96 hours, and the treated wastewater reaches the standard and is discharged.
CN202010448871.5A 2020-05-25 2020-05-25 Heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system and method Pending CN111606510A (en)

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CN113845272A (en) * 2021-10-14 2021-12-28 新沂市沂兰绿色材料产业研究院有限公司 Microbial immobilization treatment method beneficial to industrial wastewater treatment
CN114314841A (en) * 2022-02-08 2022-04-12 兰州大学淮安高新技术研究院 Immobilized biological filter biofilm formation method

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CN106830563A (en) * 2017-03-24 2017-06-13 盐城工学院 Based on photoelectricity Fenton biological reinforced Waste Water Treatment and its method of wastewater treatment

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113845272A (en) * 2021-10-14 2021-12-28 新沂市沂兰绿色材料产业研究院有限公司 Microbial immobilization treatment method beneficial to industrial wastewater treatment
CN114314841A (en) * 2022-02-08 2022-04-12 兰州大学淮安高新技术研究院 Immobilized biological filter biofilm formation method
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Application publication date: 20200901