CN218491592U - Integrated sewage treatment equipment based on rhodobacter - Google Patents

Integrated sewage treatment equipment based on rhodobacter Download PDF

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CN218491592U
CN218491592U CN202121652374.3U CN202121652374U CN218491592U CN 218491592 U CN218491592 U CN 218491592U CN 202121652374 U CN202121652374 U CN 202121652374U CN 218491592 U CN218491592 U CN 218491592U
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tank
sludge
cod
ammonia nitrogen
cod oxidation
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吴杨璐辰
戚伟康
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Shandong Taishan Ziyou Environmental Protection Technology Co ltd
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Shandong Taishan Ziyou Environmental Protection Technology Co ltd
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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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract

The utility model provides an integration sewage treatment device based on rhodobacter, including the inlet tube to and sedimentation tank, COD oxidation pond, ammonia nitrogen removal pond, advanced treatment pond and the outlet pipe of adjacent setting in proper order, COD oxidation pond set up nitrous nitrogen charge device, pH adjusting device links to each other with the COD oxidation pond simultaneously for control COD oxidation pond pH value. An object of the utility model is to provide a treatment process is succinct, energy-conserving integration sewage treatment device relatively.

Description

Integrated sewage treatment equipment based on rhodobacter
Technical Field
The utility model relates to a sewage treatment field, in particular to integration sewage treatment device based on rhodobacter.
Background
With the expansion of urban scale, sewage treatment also gradually becomes the topic of people, the components of industrial wastewater, domestic wastewater and runoff sewage are complex, and wastewater discharged by some factories is even toxic and harmful, so that the environment can be seriously damaged and the human health can be threatened without treatment. The integrated sewage treatment equipment can effectively solve the problems, and meanwhile, the equipment can be buried under the ground, has high space utilization rate, stable effluent quality and low sludge yield and is easy to treat.
However, the existing common integrated sewage treatment equipment also has certain limitations, such as higher energy consumption and corresponding disadvantages in the aspects of energy conservation and emission reduction. Therefore, the integrated sewage treatment system is energy-saving, efficient, economical, simple, convenient and feasible, and can reduce the energy consumption of integrated sewage treatment equipment on the premise of ensuring the operation efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a treatment process is succinct, energy-conserving integration sewage treatment device relatively to respond national energy saving and emission reduction's call.
The utility model aims at realizing through the following technical scheme:
the utility model provides an integration sewage treatment device based on rhodobacter, includes the inlet tube to and sedimentation tank, COD oxidation pond, ammonia nitrogen that adjacent set gradually get rid of pond, advanced treatment pond and outlet pipe, COD oxidation pond set up nitrous nitrogen charge device, pH adjusting device links to each other with the COD oxidation pond simultaneously for control COD oxidation pond pH value.
Preferably, a sludge discharge pipe is arranged at the bottom of the sedimentation tank.
Preferably, the upper parts of the COD oxidation tank and the ammonia nitrogen removal tank are respectively provided with a biogas pipe A and a biogas pipe B.
Preferably, the COD oxidation tank and the ammonia nitrogen removal tank are internally provided with a sludge liquid level monitor A and a sludge liquid level monitor B respectively. When sludge in the COD oxidation pond and the ammonia nitrogen removal pond is accumulated to a certain degree, sludge should be regularly discharged, a sludge discharge point is arranged at the middle upper part of the sludge area, the amount of discharged sludge needs to be equal to the amount accumulated in the period, and a sludge liquid level monitor is also arranged inside the COD oxidation pond and the ammonia nitrogen removal pond, so that the sludge discharge time is determined according to the sludge surface height.
Preferably, the COD oxidation tank and the ammonia nitrogen removal tank both adopt an up-flow anaerobic sludge bed. An upflow anaerobic sludge blanket (UASB reactor) is adopted, organic matters in wastewater are used as a carbon source for denitrification in the process, and the water body is driven to stir at the ascending flow velocity of the wastewater, so that stirring equipment does not need to be arranged.
An integrated sewage treatment process based on rhodobacter xylinum utilizes an upflow anaerobic sludge blanket to be matched with a treatment process of denitrifying bacteria to carry out sewage treatment, and comprises the following steps:
(1) And (3) precipitation: the sewage to be treated firstly enters a sedimentation tank through a water inlet pipe arranged at the center of the sedimentation tank, and impurities with larger diameters in the sewage are directly filtered by a grid arranged in the sedimentation tank; the smaller suspended matters which are not removed by filtration sink into a conical sludge hopper at the bottom of the sedimentation tank under the action of gravity, are discharged through a sludge discharge pipe, clear water is discharged from an overflow weir around the upper end of the sedimentation tank, and is injected into the COD oxidation tank from the bottom of the COD oxidation tank through a pipeline;
(2) And (3) denitrification reaction: sodium nitrite enters a COD oxidation pond from a nitrite nitrogen dosing device, pH adjusting equipment adjusts the pH value of the COD oxidation pond, and a sludge liquid level monitor A is arranged inside the COD oxidation pond to determine sludge discharge time;
the principle of the reaction is as follows: nitrite Nitrogen (NO) in anoxic environments by the action of facultative denitrifying bacteria, also known as denitrifying bacteria 2 N) with nitrous oxide (N) via the intermediate products Nitric Oxide (NO) 2 O) is reduced to nitrogen (N) 2 ) In the process, various organic substrates in the sewage are taken as electron donors, and the added excessive sodium nitrite is taken as an electron acceptor, and the COD in the sewage is oxidized in the link.
Structurally: the bottom of the COD oxidation tank is provided with a water distribution port, sewage enters the cavity of the COD oxidation tank through uniform water distribution and passes through an up-flow anaerobic sludge bed from bottom to top, a three-phase separator is arranged above the reactor, after the reaction is finished, produced gas is guided out from the upper part of the COD oxidation tank through a methane pipe A, sludge automatically slides down to a sludge layer below the reactor, and effluent flows out from a clarification zone and enters an ammonia nitrogen removal tank.
(3) Anaerobic ammonia oxidation reaction: the ammonia nitrogen removal tank also adopts an up-flow anaerobic sludge bed (UASB reactor), anaerobic ammonia oxidation reaction occurs in the reactor, namely ammonia (NH) is treated by taking nitrite as an electron acceptor under the anoxic condition that anaerobic ammonia oxidizing bacteria participate in the reaction + 4 ) Conversion to nitrogen (N) 2 ) Reacting with inorganic Carbon (CO) in the wastewater 2 Or HCO - 3 ) Is a carbon source and aims to convert ammonia nitrogen contained in sewage into nitrogen to be removed by means of biochemical reaction of sodium nitrite and anaerobic ammonium oxidation bacteria;
structurally: the ammonia nitrogen removal tank is similar to the COD oxidation tank in structure, namely a water distribution port is formed in the bottom of a sludge bed, sewage enters the cavity of the ammonia nitrogen removal tank through uniform water distribution and passes through an up-flow anaerobic sludge bed from bottom to top, a three-phase separator is arranged above a reactor, after reaction is completed, produced gas is led out from the upper part of the ammonia nitrogen removal tank through a methane pipe B, the sludge automatically slides to a sludge layer below the reactor, and effluent flows out of a clarification zone and enters an advanced treatment tank. A sludge liquid level monitor B is arranged in the sludge tank to determine sludge discharge time;
(4) Deep treatment: the water entering the advanced treatment tank is converted into residual sodium nitrite and oxidized COD through the internally arranged aeration device, and the treated sewage is discharged through the water outlet to finish the removal of organic matters and ammonia nitrogen in the sewage.
Further, the adding concentration of the sodium nitrite in the step (2) is 0.6 times of COD concentration and 1.32 times of ammonia nitrogen concentration.
Further, the pH value of the COD oxidation tank and the ammonia nitrogen removal tank (9) in the step (2) is 6.5-7.5.
Has the beneficial effects that:
the advantage of this patent lies in that any mechanical equipment such as aeration need not in the main treatment link, only needs to add the medicine, greatly reduced running cost such as power consumption, energy consumption medicament, effectively accomplish energy saving and emission reduction simultaneously. And through the reaction condition of controlling COD oxidation pond, carry out the effect of denitrifying bacteria, can remove the COD in the sewage, the ammonia nitrogen gets rid of the pond and turns into nitrogen gas through the means of biochemical reaction with the ammonia nitrogen that contains in the sewage and gets rid of, COD and ammonia nitrogen in the sewage are removed to the equipment of integration.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention.
Wherein: 1. the system comprises a water inlet pipe, a sedimentation tank, a sludge discharge pipe, a 4.COD oxidation tank, a methane pipe A, a methane pipe 6, a nitrite nitrogen dosing device, a pH adjusting device, a sludge liquid level monitor A, a sludge liquid level monitor 9, an ammonia nitrogen removal tank, a methane pipe B, a sludge liquid level monitor 12, an advanced treatment tank and a water outlet pipe 13.
Fig. 2 is a layout diagram of the system of the present invention.
Wherein: 1. the system comprises a water inlet pipe, a sedimentation tank, a sludge discharge pipe, a COD (chemical oxygen demand) oxidation tank, a biogas pipe A, a nitrite nitrogen dosing device, a pH adjusting device, a sludge liquid level monitor A, a sludge liquid level monitor 9, an ammonia nitrogen removal tank, a biogas pipe B, a sludge liquid level monitor 12, an advanced treatment tank, a water outlet pipe 13, a control system 14 and a power supply 5.
Detailed Description
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an orientation of upper and lower. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Example 1:
the system of the present invention is described below with reference to fig. 1.
The utility model provides an integration sewage treatment device based on rhodobacter, includes inlet tube 1 to and pond 9, advanced treatment tank 12 and outlet pipe 13 are got rid of to sedimentation tank 2, COD oxidation pond 4, the ammonia nitrogen that adjacent set gradually, COD oxidation pond 4 set up nitrosonium nitrogen charge device 6, pH adjusting device 7 links to each other with COD oxidation pond 4 simultaneously for control COD oxidation pond and ammonia nitrogen get rid of pond pH value.
The sewage flows through a water inlet pipe 1, a sedimentation tank 2, a COD oxidation tank 4, an ammonia nitrogen removal tank 9, an advanced treatment tank 12 and a water outlet pipe 13 in sequence.
In this patent, the size of each cell body needs to adjust according to index such as site condition, the load of intaking, mud load, sludge age, water conservancy residence time among the practical application. The main control conditions of the patent are as follows: the hydraulic retention time is 4-12 hours, and the sludge retention time is 45-100 days.
The treated sewage firstly enters a sedimentation tank 2 through a water inlet pipe 1 arranged at the center of the sedimentation tank 2, and if the height of the sedimentation tank 2 is 8-10 meters, the length of the sedimentation tank 2 is 6-8 meters, the width of the sedimentation tank is 5-7 meters, and the volume of the sedimentation tank is about 240-560 cubic meters. Impurities with larger diameter in the sewage are directly filtered by a grating with the aperture of 1-5 mm arranged in the sedimentation tank 2; the less suspended solid that does not get rid of through filtering sinks in the toper sludge bucket of sedimentation tank 2 bottom under the action of gravity, discharges through mud pipe 3, and the clarified water is discharged from the overflow weir around the sedimentation tank 2 upper end, pours into COD oxidation pond 4 into from COD oxidation pond 4 bottom through the pipeline.
The COD oxidation pond 4 needs to be added with sodium nitrite which is 0.6 times of the COD amount to be removed and is 1.32 times of the ammonia nitrogen amount to be removed, and the excessive sodium nitrite is matched with the microorganisms to generate denitrification reaction, so that the COD in the sewage to be treated is oxidized. If the sodium nitrite is added below the standard, ammonia nitrogen in the subsequent anaerobic ammonia oxidation reaction is remained; if the sodium nitrite is put in the water, the concentration of the nitrite nitrogen in the effluent is higher than the discharge standard.
Nitrite Nitrogen (NO) in anoxic environments by the action of facultative denitrifying bacteria, also known as denitrifying bacteria 2 N) with nitrous oxide (N) via the intermediate products Nitric Oxide (NO) 2 O) is reduced to nitrogen (N) 2 ) The process beingVarious organic substrates in the sewage are taken as electron donors, the added excessive sodium nitrite is taken as electron acceptors, and the process has the function of oxidizing COD in the sewage.
Sodium nitrite enters a COD oxidation tank 4 from a nitrite nitrogen dosing device 6, the COD oxidation tank 4 adopts an up-flow anaerobic sludge bed (UASB reactor), organic matters in wastewater are used as a denitrification carbon source in the process, and the water body is driven to be stirred at the ascending flow rate of the wastewater, so that stirring equipment is not required to be arranged; the pH adjusting device 7 is connected with the COD oxidation tank 4, thereby controlling the pH value of the system within the range of 6.5-7.5 suitable for the existence of denitrifying bacteria.
Structurally, the size of the COD oxidation tank 4 can be referred to the sedimentation tank 2. Taking a height of 5-8 meters as an example, a length of 4-6 meters, a width of 4-6 meters, and a volume of about 80-288 cubic meters. The bottom of the COD oxidation tank 4 is provided with a water distribution port, sewage enters the cavity of the COD oxidation tank 4 through uniform water distribution and passes through an upflow anaerobic sludge blanket from bottom to top, a three-phase separator is arranged above the reactor, after the reaction is completed, produced gas is led out from the upper part of the COD oxidation tank 4 through a methane pipe A5, the sludge automatically slides down to a sludge layer below the reactor, and effluent flows out of a clarification zone and enters an ammonia nitrogen removal tank 9.
When the sludge in the COD oxidation pond 4 is accumulated to a certain degree, the sludge is discharged periodically. In the UASB reactor, dense mud generally forms in sludge blanket bottom, and flocculent mud then forms in sludge blanket upper strata, and for guaranteeing that the mud activity of exhaust is lower, the mud concentration of reservation is higher, will arrange the mud point and set up upper and middle part in the mud district, the volume of discharge mud need be equal to the volume that accumulates during this, consequently the inside mud liquid level monitor A8 that sets up of COD oxidation pond 4 to this row's mud time is confirmed according to mud face height. In particular embodiments, occasional sludge may be discharged from the bottom of the reactor as needed to reduce the accumulation of sand at the bottom of the sludge bed.
The ammonia nitrogen removal tank 9 adopts an up-flow anaerobic sludge bed (UASB reactor), anaerobic ammonia oxidation reaction occurs in the reactor, namely, ammonia (NH) is treated by taking nitrite as an electron acceptor under the anoxic condition that anaerobic ammonia oxidizing bacteria participate in the reaction + 4 ) Conversion to nitrogen (N) 2 ) Reacted with wasteInorganic Carbon (CO) in water 2 Or HCO - 3 ) Is a carbon source and aims to convert ammonia nitrogen contained in sewage into nitrogen to be removed by means of biochemical reaction of sodium nitrite and anammox bacteria.
Structurally, the size of the ammonia nitrogen removal tank 9 can refer to the COD oxidation tank 4. Taking a height of 5-8 meters as an example, a length of 4-6 meters, a width of 4-6 meters, and a volume of about 80-288 cubic meters. The ammonia nitrogen removal tank 9 is similar to the internal structure of the COD oxidation tank 4, namely, a water distribution port is arranged at the bottom of a sludge bed, sewage enters the cavity of the ammonia nitrogen removal tank 9 through uniform water distribution and passes through an up-flow anaerobic sludge bed from bottom to top, a three-phase separator is arranged above the reactor, after the reaction is finished, produced gas is guided out from the upper part of the ammonia nitrogen removal tank 9 through a methane pipe B10, the sludge automatically slides to a sludge layer below the reactor, and effluent flows out from a clarification zone and enters an advanced treatment tank 12.
When the sludge in the ammonia nitrogen removal tank 9 is accumulated to a certain degree, the sludge should be discharged periodically. In the UASB reactor, dense mud generally forms in sludge blanket bottom, and flocculent sludge then forms in the sludge blanket upper strata, and for guaranteeing that the sludge activity of exhaust is lower, the mud concentration who remains is higher, will arrange the mud point and set up upper and middle part in the mud district, the volume of the mud of discharging need be equal to the volume that accumulates during this, consequently the inside mud liquid level monitor A11 that sets up in pond 9 is got rid of to the ammonia nitrogen to this is according to the mud face height and is confirmed the mud time of discharging. In practice, occasional sludge may be discharged from the bottom of the reactor as needed to reduce the accumulation of sand at the bottom of the sludge bed.
In the actual operation process, the advanced treatment tank 12 can be added according to the needs, and if COD (chemical oxygen demand) is lower than the discharge standard when the sewage flows out of the ammonia nitrogen removal tank 9, the sewage can be directly discharged out of the integrated sewage treatment equipment; if COD is still higher than the discharge standard when the sewage flows out of the ammonia nitrogen removal tank 9, an advanced treatment tank is added. The advanced treatment tank 12 is provided with an aeration device, and the number of aeration heads and the aeration amount are set according to actual conditions. The purpose of setting up the advanced treatment pond is that conversion surplus sodium nitrite and oxidation COD, and the sewage that finishes processing is discharged integration sewage treatment device through delivery port 13. If the height of the deep treatment tank 12 is 5 to 10 meters, the water outlet is arranged in a position interval of 2 to six meters.
The control system 14 is used for controlling the nitrite nitrogen dosing device 6, the pH adjusting device 7, the sludge level monitor A8 and the sludge level monitor B11, and the four devices are required to be connected with the power supply 15.
The above detailed description of the embodiments of the present invention is only used as an example, and the present invention is not limited to the above described embodiments, and the modifications of the present invention are also within the scope of the present invention.

Claims (5)

1. The utility model provides an integration sewage treatment device based on rhodobacter, includes inlet tube (1) to and sedimentation tank (2), COD oxidation pond (4), ammonia nitrogen that adjacent set gradually get rid of pond (9), advanced treatment tank (12) and outlet pipe (13), its characterized in that, COD oxidation pond (4) set up nitrosonitrogen charge device (6), pH adjusting device (7) link to each other with COD oxidation pond (4) simultaneously for control COD oxidation pond (4) pH value.
2. The integrative erythrobacteria-based sewage treatment device according to claim 1, wherein a sludge discharge pipe (3) is arranged at the bottom of the sedimentation tank (2).
3. The integrated sewage treatment equipment based on the rhodobacter sphaeroides according to claim 1, wherein a biogas pipe A (5) and a biogas pipe B (10) are respectively arranged at the upper parts of the COD oxidation tank (4) and the ammonia nitrogen removal tank (9).
4. The integrated sewage treatment equipment based on the rhodobacter sphaeroides as claimed in claim 1, wherein a sludge level monitor A (8) and a sludge level monitor B (11) are respectively arranged in the COD oxidation tank (4) and the ammonia nitrogen removal tank (9).
5. The integrated wastewater treatment equipment based on the rhodobacter xylinum according to claim 1, wherein the COD oxidation tank (4) and the ammonia nitrogen removal tank (9) both adopt an upflow anaerobic sludge blanket.
CN202121652374.3U 2021-07-20 2021-07-20 Integrated sewage treatment equipment based on rhodobacter Active CN218491592U (en)

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Application Number Priority Date Filing Date Title
CN202121652374.3U CN218491592U (en) 2021-07-20 2021-07-20 Integrated sewage treatment equipment based on rhodobacter

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Application Number Priority Date Filing Date Title
CN202121652374.3U CN218491592U (en) 2021-07-20 2021-07-20 Integrated sewage treatment equipment based on rhodobacter

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Publication Number Publication Date
CN218491592U true CN218491592U (en) 2023-02-17

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Application Number Title Priority Date Filing Date
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