CN113292157A - Fixed bed biological membrane sewage treatment method and system - Google Patents
Fixed bed biological membrane sewage treatment method and system Download PDFInfo
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- CN113292157A CN113292157A CN202110180421.7A CN202110180421A CN113292157A CN 113292157 A CN113292157 A CN 113292157A CN 202110180421 A CN202110180421 A CN 202110180421A CN 113292157 A CN113292157 A CN 113292157A
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- contact oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/004—Apparatus and plants for the biological treatment of water, waste water or sewage comprising a selector reactor for promoting floc-forming or other bacteria
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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- 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
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a fixed bed biological membrane sewage treatment method and a system, which completely get rid of an activated sludge system, form a pure biological membrane system, have the traditional advantages of a biological membrane method and have stable performance when dealing with the impact of the quality and quantity of industrial wastewater; the microbial inoculum is added by an artificial external source, so that the quantity and the quality of microorganisms in the tank are kept at a higher level, and compared with the disadvantage that other biological membrane systems rely on activated sludge as a microbial inoculation source, the method and the system have stronger degradation efficiency because the inoculation flora source is the high-quality artificially strengthened microbial inoculum; because the pond is pure biological membrane system in, do not have activated sludge, consequently need not to rely on the mud backward flow to keep the mud concentration in the pond, the electric power resource of saving has simplified operation procedure, simultaneously because the growth cycle of biomembrane self is longer, and ageing biomembrane drops the volume less slowly, therefore the biochemical sludge volume that needs the processing can significantly reduce.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a fixed bed biological membrane sewage treatment method and a system.
Background
Most process types of domestic sewage treatment at present are occupied by an A2/O process, an SBR process, a CASS process, an oxidation ditch process and the like derived by an activated sludge method, but in industrial wastewater, the fluctuation of water quality and water quantity is large, the pollutant components are complex, the activated sludge is easily impacted by the change of the water quality and the water quantity, and once a biochemical system is impacted, the recovery period and the recovery cost cannot be borne. The biomembrane method uses artificial filler as a microorganism carrier, and the biomembrane itself uses filamentous bacteria as a framework, so that the biomembrane has better impact resistance when being impacted by water quality and water quantity, and can quickly recover by itself when being impacted by toxic substances. However, in the existing biofilm method system, taking the contact oxidation method as an example, the activated sludge still exists in the system actually, and the system is a treatment method in a sludge membrane symbiotic state, so the academia defines the contact oxidation system as a sewage treatment method between the activated sludge method and the biofilm method, which has the advantages of the biofilm method, but does not get rid of the disadvantages of the activated sludge method when the activated sludge method is used for dealing with the change of water quality and water quantity.
The existing biochemical treatment system by a contact oxidation method is a treatment system for sludge-membrane symbiosis, artificial carrier fillers for bearing microorganisms and suspended activated sludge are fixedly arranged in the system, and part of microorganisms in the activated sludge can be attached to the artificial carrier fillers in the growth and reproduction process and are gathered to form a biological membrane. When sewage enters the existing contact oxidation system, suspended microorganisms in the activated sludge and immobilized microorganisms on the artificial carrier filler degrade and consume pollutants in water together. The existing contact oxidation method needs activated sludge as a source of inoculated microorganisms, so the system still has the activated sludge, and the disadvantage of the activated sludge method in the face of industrial sewage with frequently changed water quality and water quantity cannot be naturally overcome. And because of the existence of activated sludge, sludge backflow is inevitably needed after sludge-water separation of the secondary sedimentation tank to maintain the sludge concentration in the tank.
The existing sewage treatment process has the following problems:
1. in the existing sewage treatment system with a sludge-film symbiosis contact oxidation system, activated sludge is easy to impact when facing industrial wastewater with large water quality and water quantity change, the system stability needs to be improved, and the recovery after impact is slow;
2. the microbial source on the artificial carrier still depends on activated sludge inoculation, the microbial quantity is limited, the biological membrane is not rich, and the culture of the obligate flora is difficult;
3. the concentration of activated sludge in the system is maintained by sludge backflow, so that the power consumption is high, and the operation is complicated;
4. because the system does not completely get rid of the activated sludge, a large amount of activated sludge and the biological membrane are symbiotic in the system, aged biochemical sludge still can be generated every day and needs to be discharged for treatment, and the sludge filter pressing and disposal cost is higher.
Disclosure of Invention
The invention aims to provide a fixed bed biological membrane sewage treatment method and a system without using activated sludge.
In order to achieve the above purpose, the following scheme is provided:
the utility model provides a fixed bed biomembrane sewage treatment system, includes aeration equipment, still includes hydrolysis-acidification pool, contact oxidation pond and secondary sedimentation tank, aeration equipment installs the end jade of the wall at the contact oxidation pond, hydrolysis-acidification pool is connected and is linked together with the contact oxidation pond, the contact oxidation pond is connected and is linked together with the secondary sedimentation tank, be equipped with the outlet on the lateral wall of secondary sedimentation tank, the bottom of secondary sedimentation tank is equipped with the drain, all be equipped with the biological carrier filler in hydrolysis-acidification pool and the contact oxidation pond.
A fixed bed biofilm sewage treatment method of a fixed bed biofilm sewage treatment system, the method comprising the steps of:
s1, injecting sewage into a hydrolysis acidification tank and a contact oxidation tank to a half position of the two tanks;
s2, adding a microbial agent suitable for the characteristics of the sewage into the hydrolysis acidification tank and the contact oxidation tank, wherein the adding amount is 250 g per cubic meter;
s3, opening an aeration device in the contact oxidation tank, aerating the sewage in the contact oxidation tank for 3 days, and carrying out closed aeration in a hydrolysis acidification tank for 3 days;
s4, adding a nutrient into the hydrolysis acidification tank and the contact oxidation tank on the fourth day, wherein the nutrient comprises biological enzyme, glucose, urea, phosphate and trace elements, adding the nutrient, continuing to perform closed aeration in the contact oxidation tank for 2 days, and performing closed aeration in the hydrolysis acidification tank for 2 days;
s5, from the sixth day, slowly conveying sewage into the hydrolysis acidification tank, wherein the water inflow of the first day is 10% of the designed water inflow of the hydrolysis acidification tank, and the water inflow is gradually increased by 10% every day subsequently until the preset designed water inflow is reached;
s6, when the microorganisms start to form biological films on the surfaces of the biological carrier fillers in the hydrolysis acidification tank and the contact oxidation tank, the faint yellow sticky substances can be seen to be attached to the surface of the biological carrier filler by visual inspection, and at the moment, secondary microbial inoculum adding is started.
The invention has the beneficial effects that:
1. the activated sludge system is completely eliminated, a pure biofilm system is formed, the traditional advantages of the biofilm method are possessed, and the stability is realized when the water quality and the water quantity impact of the industrial wastewater are met;
2. the microbial inoculum is added by an artificial external source, so that the quantity and the quality of microorganisms in the tank are kept at a higher level, and compared with the disadvantage that other biological membrane systems rely on activated sludge as a microbial inoculation source, the method and the system have higher degradation efficiency naturally because the inoculation flora source is the high-quality artificially strengthened microbial inoculum;
3. because the pond is pure biological membrane system in, do not have activated sludge, consequently need not to rely on the mud backward flow to keep the mud concentration in the pond, the electric power resource of saving has simplified operation procedure, simultaneously because the growth cycle of biomembrane self is longer, and ageing biomembrane drops the volume less slowly, therefore the biochemical sludge volume that needs the processing can significantly reduce.
Drawings
FIG. 1 is a system block diagram of the present invention.
Reference numerals: 1. a hydrolysis acidification tank, 2 a contact oxidation tank, 3 an aeration device and 4 a secondary sedimentation tank.
Detailed Description
The following is further detailed by the specific embodiments:
the utility model provides a fixed bed biomembrane sewage treatment system, includes aeration equipment 3, still includes hydrolysis-acidification tank 1, contact oxidation pond 2 and secondary sedimentation tank 4, aeration equipment 3 installs the end jade of putting at contact oxidation pond 2, hydrolysis-acidification tank 1 is connected and is linked together with contact oxidation pond 2, contact oxidation pond 2 is connected and is linked together with secondary sedimentation tank 4, be equipped with the outlet on the lateral wall of secondary sedimentation tank 4, the bottom of secondary sedimentation tank 4 is equipped with the drain, all be equipped with the biological carrier filler in hydrolysis-acidification tank 1 and the contact oxidation pond 2.
A fixed bed biological membrane sewage treatment method of a fixed bed biological membrane sewage treatment system comprises the following steps:
s1, injecting sewage into a hydrolysis acidification tank 1 and a contact oxidation tank 2 to a half position of the two tanks, wherein the sewage in the half tanks of the two tanks is used for culturing microorganisms for water treatment;
s2, adding 250 g of microbial agents suitable for the characteristics of the sewage into the hydrolytic acidification tank 1 and the contact oxidation tank 2, performing biochemical culture by adopting different microbial agents according to the characteristics of water quality, and making a biochemical treatment system more suitable for the characteristics of the water quality, wherein the adding amount is as follows: the COD of the sewage of the sugar refinery is higher, more flora such as coccobacillus, bacillus subtilis and the like for degrading organic matters can be added into the system, the ammonia nitrogen of the sewage of the printing plant is higher, and more denitrification flora such as nitrobacteria and the like can be added into the system. The method realizes the special culture of the flora of the sewage treatment biochemical system, and is different from the disadvantage that special flora suitable for the existing water quality is difficult to form in a short time when active sludge is taken as a microorganism source in the prior art;
s3, opening an aeration device 3 in the contact oxidation tank 2, aerating the sewage in the contact oxidation tank 2 for 3 days, and hydrolyzing and acidifying the sewage in the tank 1 for 3 days in a closed aeration mode, wherein the microorganisms in the aeration tank and the closed aeration tank can quickly add value to the microorganisms in the two tanks;
s4, adding a nutrient into the hydrolysis acidification tank 1 and the contact oxidation tank 2 on the fourth day, wherein the nutrient comprises biological enzyme, glucose, urea, phosphate and trace elements, continuing to perform closed aeration in the contact oxidation tank 2 for 2 days after the nutrient is added, and increasing the nutrient in the hydrolysis acidification tank 1 for 2 days, so that the nutrients in the two tanks can be supplemented, and the microorganisms in the two tanks can be guaranteed to have enough nutrients for propagation;
s5, from the sixth day, slowly conveying sewage into the hydrolysis acidification tank 1, wherein the water inflow of the first day is 10% of the designed water inflow of the hydrolysis acidification tank 1, the water inflow is gradually increased by 10% every subsequent day until the preset designed water inflow is reached, and the sewage is gradually conveyed, so that the stability of biological membranes in the two tanks is ensured;
s6, when the microorganisms start to form biological films on the surfaces of the biological carrier fillers in the hydrolysis acidification tank 1 and the contact oxidation tank 2, the microorganisms can visually observe that faint yellow sticky substances are attached to the surfaces of the biological carrier fillers, and then secondary microbial agent feeding and replenishing are started, so that the biological environment effect formed in the bright wing can be consolidated, the biological films can be prevented from being formed at the same time and falling off at the same time, and the system stability is ensured.
The sewage treated by the hydrolysis acidification tank 1 and the contact oxidation tank 2 enters a secondary sedimentation tank 4, and a small amount of fallen biological membrane sediment flowing into the secondary sedimentation tank 4 is discharged.
The fixed bed biological membrane sewage treatment method and the system completely get rid of an activated sludge system, form a pure biological membrane system, have the traditional advantages of a biological membrane method, and have stable performance when dealing with the impact of the quality and quantity of industrial wastewater; the microbial inoculum is added by an artificial external source, so that the quantity and the quality of microorganisms in the tank are kept at a higher level, and compared with the disadvantage that other biological membrane systems rely on activated sludge as a microbial inoculation source, the method and the system have higher degradation efficiency naturally because the inoculation flora source is the high-quality artificially strengthened microbial inoculum; because the pond is pure biological membrane system in, do not have activated sludge, consequently need not to rely on the mud backward flow to keep the mud concentration in the pond, the electric power resource of saving has simplified operation procedure, simultaneously because the growth cycle of biomembrane self is longer, and ageing biomembrane drops the volume less slowly, therefore the biochemical sludge volume that needs the processing can significantly reduce.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics of the embodiments is not described herein in any greater extent than that known to persons of ordinary skill in the art at the filing date or before the priority date of the present invention, so that all of the prior art in this field can be known and can be applied with the ability of conventional experimental means before this date. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the applicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (2)
1. The utility model provides a fixed bed biofilm sewage treatment system, includes aeration equipment, its characterized in that: still including hydrolysis-acidification pool, contact oxidation pond and secondary sedimentation tank, aeration equipment installs the end jade of the wall at the contact oxidation pond, hydrolysis-acidification pool is connected and is linked together with the contact oxidation pond, contact oxidation pond and secondary sedimentation tank are connected and are linked together, be equipped with the outlet on the lateral wall of secondary sedimentation tank, the bottom of secondary sedimentation tank is equipped with the drain, all be equipped with the biological carrier filler in hydrolysis-acidification pool and the contact oxidation pond.
2. A fixed bed biofilm sewage treatment method using the fixed bed biofilm sewage treatment system of claim 1, comprising the steps of:
s1, injecting sewage into a hydrolysis acidification tank and a contact oxidation tank to a half position of the two tanks;
s2, adding a microbial agent suitable for the characteristics of the sewage into the hydrolysis acidification tank and the contact oxidation tank, wherein the adding amount is 250 g per cubic meter;
s3, opening an aeration device in the contact oxidation tank, aerating the sewage in the contact oxidation tank for 3 days, and carrying out closed aeration in a hydrolysis acidification tank for 3 days;
s4, adding a nutrient into the hydrolysis acidification tank and the contact oxidation tank on the fourth day, wherein the nutrient comprises biological enzyme, glucose, urea, phosphate and trace elements, adding the nutrient, continuing to perform closed aeration in the contact oxidation tank for 2 days, and performing closed aeration in the hydrolysis acidification tank for 2 days;
s5, from the sixth day, slowly conveying sewage into the hydrolysis acidification tank, wherein the water inflow of the first day is 10% of the designed water inflow of the hydrolysis acidification tank, and the water inflow is gradually increased by 10% every day subsequently until the preset designed water inflow is reached;
and S6, when the microorganisms start to form biological films on the surfaces of the biological carrier fillers in the hydrolysis acidification tank and the contact oxidation tank, visually observing that light yellow sticky substances are attached to the surfaces of the biological carrier fillers, and starting secondary microbial inoculum supplementation.
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| CN202110180421.7A CN113292157A (en) | 2021-02-08 | 2021-02-08 | Fixed bed biological membrane sewage treatment method and system |
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| CN202110180421.7A CN113292157A (en) | 2021-02-08 | 2021-02-08 | Fixed bed biological membrane sewage treatment method and system |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417837A (en) * | 2008-10-16 | 2009-04-29 | 李颖 | Method for purifying sewage by activated sludge biological film zone |
| CN111470707A (en) * | 2020-03-26 | 2020-07-31 | 福建紫金选矿药剂有限公司 | Biological treatment synergistic method for refractory organic wastewater |
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2021
- 2021-02-08 CN CN202110180421.7A patent/CN113292157A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417837A (en) * | 2008-10-16 | 2009-04-29 | 李颖 | Method for purifying sewage by activated sludge biological film zone |
| CN111470707A (en) * | 2020-03-26 | 2020-07-31 | 福建紫金选矿药剂有限公司 | Biological treatment synergistic method for refractory organic wastewater |
Non-Patent Citations (1)
| Title |
|---|
| 曲克明等: "《海水工厂化高效养殖体系构建工程技术》", 31 January 2010, 北京：海洋出版社 * |
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