CN108862587B - Device and method for treating high ammonia nitrogen wastewater and domestic sewage by combining continuous flow shortcut nitrification/anaerobic ammonium oxidation with DEAMOX - Google Patents

Device and method for treating high ammonia nitrogen wastewater and domestic sewage by combining continuous flow shortcut nitrification/anaerobic ammonium oxidation with DEAMOX Download PDF

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CN108862587B
CN108862587B CN201810768966.8A CN201810768966A CN108862587B CN 108862587 B CN108862587 B CN 108862587B CN 201810768966 A CN201810768966 A CN 201810768966A CN 108862587 B CN108862587 B CN 108862587B
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reactor
water
ammonia nitrogen
domestic sewage
peristaltic pump
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CN108862587A (en
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彭永臻
李翔晨
杜睿
操沈彬
张寒雨
范泽里
吴蕾
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Beijing University of Technology
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/302Nitrification and denitrification treatment
    • C02F3/307Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/006Regulation methods for biological treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00Use of specific compounds during water treatment
    • C02F2305/06Nutrients for stimulating the growth of microorganisms

Abstract

A device and a method for treating high ammonia nitrogen wastewater and domestic sewage by combining continuous flow shortcut nitrification/anaerobic ammonium oxidation with DEAMOX belong to the field of biological treatment of sewage and sludge. The device comprises: high ammonia-nitrogen wastewater storage tank, upflow sludge blanket USB reactor, middle water tank, domestic sewage storage tank, sequencing batch SBR reactor, water outlet tank. The method comprises the following steps: the high ammonia nitrogen wastewater enters an upflow sludge blanket USB reactor, ammonia oxidizing bacteria and anaerobic ammonia oxidizing bacteria convert ammonia nitrogen into nitrogen and nitrate nitrogen, effluent and domestic sewage simultaneously enter a sequencing batch SBR reactor, and denitrifying bacteria and anaerobic ammonia oxidizing bacteria convert the nitrate nitrogen in the effluent and the ammonia nitrogen in the domestic sewage into the nitrogen and the nitrate nitrogen. The invention effectively solves the problem of excessive nitrate nitrogen in the effluent when the short-cut nitrification/anaerobic ammonia oxidation process is used for treating the high ammonia nitrogen wastewater, and simultaneously realizes the high-efficiency denitrification of the domestic sewage.

Description

Device and method for treating high ammonia nitrogen wastewater and domestic sewage by combining continuous flow shortcut nitrification/anaerobic ammonium oxidation with DEAMOX
Technical Field
The invention relates to a device and a method for treating high ammonia nitrogen wastewater and domestic sewage by combining continuous flow shortcut nitrification/anaerobic ammonium oxidation with DEAMOX, belongs to the technical field of biological sewage treatment, is suitable for deep denitrification of the high ammonia nitrogen wastewater and the domestic sewage, and has the characteristics of energy conservation and consumption reduction.
Background
The anaerobic ammonia oxidation technology is characterized in that ammonia nitrogen and nitrite nitrogen in water are converted into nitrogen and a small amount of nitrate nitrogen by anaerobic ammonia oxidation bacteria, the technology has the advantages of no need of aeration, no need of an external carbon source, small sludge yield and the like, is one of autotrophic biological denitrification technologies with great development potential, receives wide attention in the industry in recent years, and the process of denitrification by combining the anaerobic ammonia oxidation technology with other denitrification technologies is gradually matured.
Compared with the traditional nitrification/denitrification process, the short-cut nitrification/anaerobic ammonia oxidation process can save 100 percent of carbon source and 25 percent of oxygen demand, has small sludge yield and has the advantages of energy conservation and consumption reduction. The continuous flow short-cut nitrification/anaerobic ammonia oxidation process can achieve continuous water inflow and continuous water outflow, and greatly improves the water inflow load compared with the sequencing batch type process, but the process is generally put forward and applied in the form of a sequencing batch reactor, and the effluent contains partial nitrate nitrogen, and particularly when the process is used for treating high ammonia nitrogen wastewater, the nitrate nitrogen in the effluent can not reach the standard.
The DEAMOX (denitrifying AMmonium oxidation) process refers to that denitrifying bacteria reduce nitrate nitrogen into nitrite nitrogen by using organic matters, and anaerobic AMmonium oxidation bacteria convert the nitrite nitrogen and ammonia nitrogen into nitrogen and a small amount of nitrate nitrogen.
The continuous flow short-cut nitrification/anaerobic ammonia oxidation technology and the DEAMOX are combined to treat the high ammonia nitrogen wastewater and the domestic sewage, the nitrate-containing wastewater discharged after the high ammonia nitrogen wastewater is treated by the short-cut nitrification/anaerobic ammonia oxidation can be further removed through the DEAMOX, and the domestic sewage provides ammonia nitrogen and a carbon source for the DEAMOX.
Disclosure of Invention
The invention provides a device and a method for treating high ammonia nitrogen wastewater and domestic sewage by continuous flow shortcut nitrification/anaerobic ammonia oxidation combined DEAMOX, and particularly relates to a device and a method for treating the high ammonia nitrogen wastewater and the domestic sewage by continuous flow shortcut nitrification/anaerobic ammonia oxidation combined DEAMOX, wherein the high ammonia nitrogen wastewater enters an up-flow sludge blanket USB reactor, ammonia oxidizing bacteria oxidize part of ammonia nitrogen into nitrite nitrogen, and anaerobic ammonia oxidizing bacteria convert the rest part of ammonia nitrogen and nitrite nitrogen into nitrogen and nitrate nitrogen; effluent of an upflow sludge blanket USB reactor containing nitrate nitrogen and domestic sewage containing ammonia nitrogen and organic matters enter a Sequencing Batch Reactor (SBR) together, denitrifying bacteria reduce the nitrate nitrogen into nitrite nitrogen, anaerobic ammonium oxidation bacteria convert the ammonia nitrogen and the nitrite nitrogen into nitrogen and a small amount of nitrate nitrogen, and finally synchronous denitrification of the high ammonia nitrogen wastewater and the domestic sewage is realized.
In order to achieve the aim, the invention provides a device for treating high ammonia nitrogen wastewater and domestic sewage by combining continuous flow shortcut nitrification/anaerobic ammonium oxidation with DEAMOX, which comprises: comprises a high ammonia nitrogen wastewater storage tank (1), an upflow sludge blanket USB reactor (2), an intermediate water tank (3), a domestic sewage storage tank (4), a Sequencing Batch Reactor (SBR) reactor (5) and a water outlet tank (6); the high ammonia nitrogen wastewater storage tank is connected with a first water inlet (2.2) at the bottom of the upflow sludge blanket USB reactor through a first peristaltic pump (1.1); the upflow sludge blanket USB reactor (2) is provided with an exhaust port (2.15), a first exhaust port (2.14), an overflow weir (2.13), a first backflow port (2.12), a three-phase separator (2.11), a dissolved oxygen on-line tester (2.9), a pH on-line tester (2.8), a first sampling port (2.10), a second sampling port (2.7), a third sampling port (2.6), a fourth sampling port (2.5), a microporous aeration device (2.4), a first water inlet (2.2), a second water inlet (2.3) and a first sludge discharge port (2.1); the first backflow port (2.12) is connected with the second water inlet (2.3) through a second peristaltic pump (2.17), the dissolved oxygen online determinator (2.9) and the pH online determinator (2.8) are connected with the process controller (7) through an online parameter determinator host (2.16), the blower (2.18) is connected with the microporous aeration device (2.4) through a gas flowmeter (2.19), and the first water discharge port (2.14) is connected with the intermediate water tank (3); the sequencing batch SBR reactor (5) is connected with the middle water tank (3) through a third water inlet (5.4) and a third peristaltic pump (3.1), and the sequencing batch SBR reactor (5) is connected with the domestic sewage storage tank (4) through the third water inlet (5.4) and a fourth peristaltic pump (4.1); the sequencing batch SBR (5) is provided with a stirrer (5.1), a third water inlet (5.4), a second water outlet (5.2) and a drain valve (5.3); in addition, a process controller (7) connected with a computer (8) is arranged and used for controlling the first peristaltic pump, the second peristaltic pump, the third peristaltic pump (3.1), the fourth peristaltic pump (4.1), the blower (2.18), the stirrer (5.1), the drain valve (5.3) and the online parameter measuring instrument host (2.16). The process controller (7), the computer (8) and the online parameter measuring instrument host (2.16) are automatic control systems.
The method for treating the high ammonia nitrogen wastewater and the domestic sewage by combining the continuous flow shortcut nitrification/anaerobic ammonium oxidation with DEAMOX comprises the following steps:
starting an upflow sludge blanket USB reactor: inoculating residual sludge of a municipal sewage treatment plant, keeping the sludge concentration in the reactor at 2000-4000mg/L, taking domestic sewage as inlet water, stopping aeration for 10min every 20min of aeration, maintaining the dissolved oxygen mass concentration at 0.5-1.0mg/L during aeration, keeping hydraulic retention time at 8-15h, controlling the ratio of effluent backflow to inflow flow at 100-200%, and controlling the sludge age at 6-15 d; when the ammonia nitrogen removal rate is more than 90%, changing the influent domestic sewage into high ammonia nitrogen wastewater with ammonia nitrogen mass concentration more than 200mg/L, and keeping other operation parameters unchanged; when the ratio of the ammonia nitrogen concentration of the effluent to the nitrite nitrogen mass concentration is 1:1-1:1.5, inoculating anaerobic ammonia oxidation granular sludge into an up-flow sludge blanket USB reactor, controlling the sludge concentration in the reactor after inoculation to be 6000-8000mg/L, and when the ammonia nitrogen removal rate is more than 75%, successfully starting the reactor.
Starting the sequencing batch SBR reactor: inoculating short-range denitrification sludge, keeping the sludge concentration in the reactor at 3000mg/L, keeping the quality concentration of inlet water of nitrate wastewater with artificially prepared nitrate nitrogen concentration of 50-100mg/L, C/N at 2.0-4.0, selecting sodium acetate as a carbon source, operating for 4 cycles every day, and operating for 6 hours every cycle, wherein the five processes of water inlet, stirring, precipitation, drainage and idling are included, the stirring time is controlled at 200-300min, the precipitation time is controlled at 30-80min, the idling is controlled at 30-80min, the drainage ratio is 40-60%, and the quality concentration of dissolved oxygen in the reactor is not controlled in the stirring process. When the nitrite accumulation rate is more than 70%, inoculating anaerobic ammonia oxidation granular sludge, controlling the sludge concentration in the reactor after inoculation to be 4000-6000mg/L, the inlet water to be artificially prepared waste water with the nitrate nitrogen mass concentration of 50-100mg/L and the ammonia nitrogen mass concentration of 30-80mg/L, C/N of 2.0-4.0, selecting sodium acetate as a carbon source, operating for 4 periods every day and 6 hours every period, wherein the five processes of water inlet, stirring, precipitation, drainage and idling are included, the stirring time is controlled to be 200-300min, the precipitation time is controlled to be 30-80min, the idling is controlled to be 30-80min, the drainage ratio is 40-60%, and the mass concentration of dissolved oxygen in the reactor is not controlled in the stirring process. When the total nitrogen removal of the effluent is more than 80%, the reactor is started successfully.
And (3) combined operation:
the method comprises the following steps: wastewater with ammonia nitrogen mass concentration more than 200mg/L in the high ammonia nitrogen wastewater storage tank enters an upflow sludge blanket USB reactor through a first peristaltic pump, intermittent aeration is set to stop aeration for 10min every 20min, the dissolved oxygen concentration is maintained to be 0.5-1.0mg/L during aeration, the hydraulic retention time is 8-15h, the second peristaltic pump is adjusted to control the ratio of effluent backflow to influent flow to be 100-200%, and effluent enters an intermediate water tank.
Step two: the wastewater in the middle water tank and the domestic sewage in the domestic sewage storage tank are respectively pumped into the sequencing batch SBR reactor by a third peristaltic pump and a fourth peristaltic pump according to the volume ratio of 1:1-1:1.5, the operation is carried out for 4 cycles every day, each cycle is 6 hours, the sequencing batch SBR reactor comprises five processes of water feeding, stirring, sedimentation, water discharging and idling, wherein the stirring time is controlled to be 200-80 min, the sedimentation time is controlled to be 30-80min, the idling is controlled to be 30-80min, the water discharging ratio is 40-60%, and the mass concentration of dissolved oxygen in the reactor is not controlled in the stirring process.
The peristaltic pump, the blower and the drain valve in the steps are controlled by an automatic control system.
The technical principle of the invention is as follows:
the present invention is divided into two parts, namely a partial nitrification/anaerobic ammonia oxidation part and a DEAMOX part. The short-cut nitrification/anaerobic ammonia oxidation part is characterized in that high ammonia nitrogen wastewater enters an upflow sludge blanket USB reactor, ammonia oxidizing bacteria oxidize part of ammonia nitrogen into nitrite nitrogen, and anaerobic ammonia oxidizing bacteria convert the rest ammonia nitrogen and nitrite nitrogen into nitrogen and nitrate nitrogen; and in the DEAMOX part, the effluent of the upflow sludge blanket USB reactor containing nitrate nitrogen and the domestic sewage containing ammonia nitrogen and organic matters enter a sequencing batch SBR reactor together, denitrifying bacteria reduce the nitrate nitrogen into nitrite nitrogen, anaerobic ammonium oxidation bacteria convert the ammonia nitrogen and the nitrite nitrogen into nitrogen and a small amount of nitrate nitrogen, and finally synchronous denitrification of the high ammonia nitrogen wastewater and the domestic sewage is realized.
The device and the method for treating high ammonia nitrogen wastewater and domestic sewage by combining the continuous flow shortcut nitrification/anaerobic ammonium oxidation technology with DEAMOX have the following advantages:
(1) compared with the traditional nitrification/denitrification process, the shortcut nitrification/anaerobic ammonia oxidation technology reduces 25 percent of oxygen demand and 100 percent of external carbon source amount for treating the high ammonia nitrogen wastewater.
(2) Aiming at the problem of overhigh nitrate nitrogen in the effluent existing in the process of treating high ammonia nitrogen wastewater by using a shortcut nitrification/anaerobic ammonia oxidation technology, the post-positioned DEAMOX provided by the method can effectively reduce the nitrate nitrogen concentration in the effluent and can synchronously treat domestic sewage.
(3) Organic matters in the domestic sewage are fully utilized, an external carbon source is avoided, and the operation cost is saved.
(4) For the DEAMOX process, the proportion of the effluent of the USB reactor of the upflow sludge blanket and the influent of the domestic sewage and the reaction time are controlled, the pH value and the like are not required to be regulated, and the operation and the running are simple.
Description of the drawings:
FIG. 1 is a flow chart for synchronously treating high ammonia nitrogen wastewater and domestic sewage.
(1) A high ammonia nitrogen wastewater storage tank; (1.1) a first peristaltic pump; (2) an upflow sludge blanket USB reactor; (2.1) a first sludge discharge port; (2.2) a first water inlet; (2.3) a second water inlet; (2.4) a micropore aeration device; (2.5) a fourth sampling port; (2.6) a third sampling port; (2.7) a second sampling port; (2.8) a pH on-line tester; (2.9) an online dissolved oxygen tester; (2.10) a first sampling port; (2.11) a three-phase separator; (2.12) a first return port; (2.13) an overflow weir; (2.14) a first drain port; (2.15) an exhaust port; (2.16) an online parameter measuring instrument; (2.17) a second peristaltic pump; (2.18) a blower; (2.19) a gas flow meter; (3) a main machine middle water tank; (3.1) a third peristaltic pump; (4) a domestic sewage storage tank; (4.1) a fourth peristaltic pump; (5) sequencing batch SBR reactor; (5.1) a stirrer; (5.2) a second water discharge port; (5.3) a drain valve; (5.4) a third water inlet; (6) a water outlet tank; (7) a process controller; (8) and (4) a computer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The attached figure 1 is a device for treating high ammonia nitrogen wastewater and domestic sewage by combining continuous flow shortcut nitrification/anaerobic ammonium oxidation with DEAMOX, and is characterized in that: comprises a high ammonia nitrogen wastewater storage tank (1), an upflow sludge blanket USB reactor (2), an intermediate water tank (3), a domestic sewage storage tank (4), a Sequencing Batch Reactor (SBR) reactor (5) and a water outlet tank (6); the high ammonia nitrogen wastewater storage tank is connected with a first water inlet (2.2) at the bottom of the upflow sludge blanket USB reactor through a first peristaltic pump (1.1); the upflow sludge blanket USB reactor (2) is provided with an exhaust port (2.15), a first exhaust port (2.14), an overflow weir (2.13), a first backflow port (2.12), a three-phase separator (2.11), a dissolved oxygen on-line tester (2.9), a pH on-line tester (2.8), a first sampling port (2.10), a second sampling port (2.7), a third sampling port (2.6), a fourth sampling port (2.5), a microporous aeration device (2.4), a first water inlet (2.2), a second water inlet (2.3) and a first sludge discharge port (2.1); the first backflow port (2.12) is connected with the second water inlet (2.3) through a second peristaltic pump (2.17), the dissolved oxygen online determinator (2.9) and the pH online determinator (2.8) are connected with the process controller (7) through an online parameter determinator host (2.16), the blower (2.18) is connected with the microporous aeration device (2.4) through a gas flowmeter (2.19), and the first water discharge port (2.14) is connected with the intermediate water tank (3); the sequencing batch SBR reactor (5) is connected with the middle water tank (3) through a third water inlet (5.4) and a third peristaltic pump (3.1), and the sequencing batch SBR reactor (5) is connected with the domestic sewage storage tank (4) through the third water inlet (5.4) and a fourth peristaltic pump (4.1); the sequencing batch SBR (5) is provided with a stirrer (5.1), a third water inlet (5.4), a second water outlet (5.2) and a drain valve (5.3); in addition, a process controller (7) connected with a computer (8) is arranged and used for controlling the first peristaltic pump, the second peristaltic pump, the third peristaltic pump (3.1), the fourth peristaltic pump (4.1), the blower (2.18), the stirrer (5.1), the drain valve (5.3) and the online parameter measuring instrument host (2.16). The process controller (7), the computer (8) and the online parameter measuring instrument host (2.16) are automatic control systems.
The specific operation process is as follows:
starting an upflow sludge blanket USB reactor: inoculating return sludge of a municipal sewage treatment plant, keeping the concentration of the sludge in the reactor to be 2500mg/L, taking domestic sewage as inlet water, stopping aeration for 10min every 20min of aeration, keeping the concentration of dissolved oxygen to be 0.7mg/L during aeration, keeping hydraulic retention time to be 12h, adjusting a second peristaltic pump to control the ratio of outlet water return to inlet water flow to be 150%, and controlling the sludge age to be 10 d; when the ammonia nitrogen mass concentration of the outlet water is less than 5mg/L, the domestic sewage of the inlet water is changed into the waste water with the ammonia nitrogen mass concentration of 220mg/L, and other operation parameters are unchanged; when the ratio of the mass concentration of the effluent ammonia nitrogen to the mass concentration of the nitrite nitrogen is about 1:1.2, inoculating anaerobic ammonia oxidation granular sludge into an upflow sludge blanket USB reactor, controlling the sludge concentration in the reactor after inoculation to be 7000mg/L, and when the mass concentrations of the effluent ammonia nitrogen and the nitrite nitrogen are both less than 10mg/L, successfully starting the reactor.
Starting the sequencing batch SBR reactor: inoculating short-range denitrification sludge, keeping the sludge concentration in the reactor at 2000mg/L, enabling inlet water to be nitrate wastewater with the artificially prepared nitrate nitrogen mass concentration of 80mg/L, C/N of 3.0, selecting sodium acetate as a carbon source, operating for 4 cycles every day, and enabling the period to be 6 hours every cycle, wherein the method comprises five processes of water inlet, stirring, sedimentation, drainage and idling, the stirring time is 270min, the sedimentation time is 40min, the idling time is 30min, and the drainage ratio is 50%. When the mass concentration of nitrate nitrogen in outlet water is less than 5mg/L and the mass concentration of nitrite nitrogen is maintained at 60mg/L, inoculating anaerobic ammonia oxidation granular sludge, controlling the sludge concentration in the reactor after inoculation to be 5000mg/L, controlling inlet water to be artificially configured wastewater with the mass concentration of nitrate nitrogen of 80mg/L and the mass concentration of ammonia nitrogen of 60mg/L, C/N to be 3.0, selecting sodium acetate as a carbon source, operating for 4 cycles every day, and operating for 6 hours every cycle, wherein the five processes of water inlet, stirring, sedimentation, drainage and idling are included, the stirring time is 270min, the sedimentation time is 40min, the idling time is 30min, and the drainage ratio is 50%. When the mass concentration of the effluent nitrate nitrogen, nitrite nitrogen and ammonia nitrogen is less than 5mg/L, the reactor is successfully started.
And (3) combined operation:
the method comprises the following steps: high ammonia nitrogen wastewater with the ammonia nitrogen mass concentration of 220mg/L in the high ammonia nitrogen wastewater storage tank enters an upflow sludge blanket USB reactor through a first peristaltic pump, intermittent aeration is set to stop aeration for 10min every 20min, the dissolved oxygen mass concentration is maintained to be about 0.7mg/L during aeration, the hydraulic retention time is 12h, the second peristaltic pump is adjusted to control the ratio of the effluent backflow to the influent flow to be 150%, and the effluent enters an intermediate water tank.
Step two: the wastewater in the middle water tank and the domestic sewage in the domestic sewage storage tank are respectively pumped into the Sequencing Batch Reactor (SBR) by a third peristaltic pump and a fourth peristaltic pump according to the volume ratio of 1:1, the operation is carried out for 4 cycles every day, each cycle is 6 hours, and the sequencing batch reactor comprises five processes of water feeding, stirring, sedimentation, water discharging and idling, wherein the stirring time is 270min, the sedimentation time is 40min, the idling time is 30min, and the water discharging ratio is 50%.
The peristaltic pump, the blower and the drain valve in the steps are controlled by an automatic control system.
The continuous test results show that:
the device can synchronously treat high ammonia nitrogen wastewater and domestic sewage, the ammonia nitrogen removal rate is more than 94.6 percent, the organic matter removal rate is more than 98.7 percent, the mass concentration of ammonia nitrogen in system effluent is less than 15mg/L, the mass concentration of nitrite nitrogen is less than 15mg/L, and the mass concentration of nitrate nitrogen is less than 5 mg/L.

Claims (1)

1. A method for treating high ammonia nitrogen wastewater and domestic sewage by continuous flow shortcut nitrification/anaerobic ammonia oxidation combined DEAMOX comprises the steps that a high ammonia nitrogen wastewater storage tank (1), an up-flow sludge bed USB reactor (2), an intermediate water tank (3), a domestic sewage storage tank (4), a sequencing batch SBR reactor (5) and a water outlet tank (6) are adopted; the high ammonia nitrogen wastewater storage tank is connected with a first water inlet (2.2) at the bottom of the upflow sludge blanket USB reactor through a first peristaltic pump (1.1); the upflow sludge blanket USB reactor (2) is provided with an exhaust port (2.15), a first drain port (2.14), an overflow weir (2.13), a first backflow port (2.12), a three-phase separator (2.11), a dissolved oxygen online tester (2.9), a pH online tester (2.8), a sampling port, a microporous aeration device (2.4), a first water inlet (2.2), a second water inlet (2.3) and a first sludge discharge port (2.1); the first backflow port (2.12) is connected with the second water inlet (2.3) through a second peristaltic pump (2.17), the dissolved oxygen online determinator (2.9) and the pH online determinator (2.8) are connected with the process controller (7) through an online parameter determinator host (2.16), the blower (2.18) is connected with the microporous aeration device (2.4) through a gas flowmeter (2.19), and the first water discharge port (2.14) is connected with the intermediate water tank (3); the sequencing batch SBR reactor (5) is connected with the middle water tank (3) through a third water inlet (5.4) and a third peristaltic pump (3.1), and the sequencing batch SBR reactor (5) is connected with the domestic sewage storage tank (4) through the third water inlet (5.4) and a fourth peristaltic pump (4.1); the sequencing batch SBR (5) is provided with a stirrer (5.1), a third water inlet (5.4), a second water outlet (5.2) and a drain valve (5.3); in addition, a process controller (7) connected with a computer (8) is arranged and used for controlling the first peristaltic pump, the second peristaltic pump, the third peristaltic pump (3.1), the fourth peristaltic pump (4.1), the blower (2.18), the stirrer (5.1), the drain valve (5.3) and the online parameter measuring instrument host (2.16); the automatic control system comprises a process controller (7), a computer (8) and an online parameter measuring instrument host (2.16);
the method is characterized by comprising the following steps:
(1) starting an upflow sludge blanket USB reactor: inoculating residual sludge of an urban sewage treatment plant, keeping the sludge concentration in an upflow sludge blanket USB reactor at 2000-4000mg/L, taking domestic sewage as inlet water, setting intermittent aeration to stop aeration for 10min every 20min, maintaining the dissolved oxygen mass concentration at 0.5-1.0mg/L during aeration, controlling the hydraulic retention time at 8-15h, controlling the ratio of outlet water backflow to inlet water flow at 100-200%, and controlling the sludge age at 6-15 d; when the ammonia nitrogen removal rate is more than 90%, changing the influent domestic sewage into high ammonia nitrogen wastewater with ammonia nitrogen mass concentration more than 200mg/L, and keeping other operation parameters unchanged; when the ratio of the ammonia nitrogen concentration of the effluent to the nitrite nitrogen mass concentration is 1:1-1:1.5, inoculating anaerobic ammonia oxidation granular sludge into an upflow sludge blanket USB reactor, controlling the sludge concentration in the upflow sludge blanket USB reactor after inoculation to be 6000-8000mg/L, and when the ammonia nitrogen removal rate is more than 75%, successfully starting the reactor;
(2) starting the sequencing batch SBR reactor: inoculating short-range denitrification sludge, keeping the sludge concentration in the sequencing batch SBR reactor at 3000mg/L, ensuring that inlet water is nitrate wastewater with artificially configured nitrate nitrogen mass concentration of 50-100mg/L, C/N at 2.0-4.0, selecting sodium acetate as a carbon source, operating for 4 periods every day, and operating for 6 hours every period, wherein the five processes of inlet water, stirring, sedimentation, drainage and idling are included, wherein the stirring time is controlled at 200-300min, the sedimentation time is controlled at 30-80min, the idling is controlled at 30-80min, the drainage ratio is 40-60%, and the mass concentration of dissolved oxygen in the reactor is not controlled in the stirring process; when the nitrite accumulation rate is more than 70 percent, inoculating anaerobic ammonia oxidation granular sludge, controlling the sludge concentration in the inoculated reactor to be 4000-6000mg/L, the inlet water to be artificially prepared waste water with the nitrate nitrogen mass concentration of 50-100mg/L and the ammonia nitrogen mass concentration of 30-80mg/L, C/N of 2.0-4.0, selecting sodium acetate as a carbon source, operating for 4 periods every day and 6 hours every period, wherein the five processes of water inlet, stirring, precipitation, drainage and idling are included, the stirring time is controlled to be 200-300min, the precipitation time is controlled to be 30-80min, the idling is controlled to be 30-80min, the drainage ratio is 40-60 percent, and the mass concentration of dissolved oxygen in the sequencing batch SBR reactor is not controlled in the stirring process; when the total nitrogen removal rate of effluent is more than 80%, the reactor is started successfully;
(3) and (3) combined operation:
the method comprises the following steps: wastewater with ammonia nitrogen mass concentration more than 200mg/L in the high ammonia nitrogen wastewater storage tank enters an upflow sludge blanket USB reactor through a first peristaltic pump, intermittent aeration is set to stop aeration for 10min every 20min, the dissolved oxygen concentration is maintained to be 0.5-1.0mg/L during aeration, the hydraulic retention time is 8-15h, the second peristaltic pump is adjusted to control the ratio of effluent backflow to influent flow to be 100-200%, and effluent enters an intermediate water tank;
step two: pumping the wastewater in the intermediate water tank and the domestic sewage in the domestic sewage storage tank into the sequencing batch SBR reactor by a third peristaltic pump and a fourth peristaltic pump respectively in a volume ratio of 1:1-1:1.5, operating for 4 cycles every day, and operating for 6 hours every cycle, wherein the sequencing batch SBR reactor comprises five processes of water feeding, stirring, precipitation, water drainage and idling, wherein the stirring time is controlled to be 200-80 min, the precipitation time is controlled to be 30-80min, the idling is controlled to be 30-80min, the water drainage ratio is 40-60%, and the mass concentration of dissolved oxygen in the reactor is not controlled in the stirring process;
the peristaltic pump, the blower and the drain valve in the steps are controlled by an automatic control system.
CN201810768966.8A 2018-07-13 2018-07-13 Device and method for treating high ammonia nitrogen wastewater and domestic sewage by combining continuous flow shortcut nitrification/anaerobic ammonium oxidation with DEAMOX Active CN108862587B (en)

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