Amino acid wastewater recycling treatment device

Abstract

An amino acid wastewater recycling treatment device comprises a pretreatment tank, an anaerobic reactor, an aerobic reactor, a sedimentation tank, a reverse osmosis device and a water storage tank which are sequentially arranged, a water inlet pipeline is installed on the upper portion of one side of the pretreatment tank and externally connected with an amino acid wastewater output pipeline, and a water outlet pipeline is installed on the lower portion of the other side of the pretreatment tank and externally connected with a water outlet pipeline. The water outlet pipeline is communicated with a water inlet of the anaerobic reactor, a water outlet of the anaerobic reactor is communicated with a water inlet of the aerobic reactor, a water inlet and an overflow port are formed in the upper part of the sedimentation tank, a sludge discharge port is formed in the bottom of the sedimentation tank, and a water outlet of the aerobic reactor is communicated with a water inlet of the sedimentation tank; a water inlet of the reverse osmosis device is communicated with an overflow port of the sedimentation tank, the water storage tank is communicated with a water production port of the reverse osmosis device, and a concentrated water port of the reverse osmosis device is communicated with a concentrated water pipeline. The amino acid wastewater treatment device is specially designed for the amino acid wastewater, is favorable for realizing efficient treatment and recovery of the amino acid wastewater, and is environment-friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of amino acid production, in particular to an amino acid wastewater recycling treatment device. Background Art

[0002] With the rapid development of bio-fermentation technology, the amino acid production industry has risen rapidly and has become an important part of modern industry. However, the large amount of wastewater generated in this process has become an environmental problem that needs to be solved urgently. In the existing technology, amino acid wastewater is usually treated as ordinary wastewater, that is, it is directly sent to the existing wastewater treatment device for treatment. Although it seems to simplify the treatment process, it may actually bring a series of problems. Since amino acid wastewater contains high concentrations of organic matter, ammonia nitrogen and substances that may inhibit microorganisms, being treated as ordinary wastewater will not only significantly increase the difficulty of wastewater treatment and reduce the efficiency of overall biological treatment, but may also lead to a significant increase in treatment costs.

[0003] Therefore, there is an urgent need for a device for treating amino acid wastewater to cope with its particularity, ensure that the amino acid wastewater is effectively treated and avoid adverse effects on the environment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to address the deficiencies of the existing technology and to provide an amino acid wastewater recycling treatment device which is specially designed for amino acid wastewater, helps to achieve efficient treatment and recovery of amino acid wastewater, and is environmentally friendly.

[0005] The technical problem to be solved by the present invention is achieved by the following technical solution: The present invention is a device for recycling and treating amino acid wastewater, comprising a pretreatment tank, an anaerobic reactor, an aerobic reactor, a sedimentation tank, a reverse osmosis device and a water storage tank, wherein an inlet pipe is installed at the upper portion of one side of the pretreatment tank, the inlet pipe is externally connected to an amino acid wastewater output pipe, an outlet pipe is installed at the lower portion of the other side of the pretreatment tank, the outlet pipe is connected to the water inlet of the anaerobic reactor, the water outlet of the anaerobic reactor is connected to the water inlet of the aerobic reactor, a water inlet and an overflow port are provided at the upper portion of the sedimentation tank, a sludge discharge port is provided at the bottom of the sedimentation tank, the water outlet of the aerobic reactor is connected to the water inlet of the sedimentation tank, the water inlet of the reverse osmosis device is connected to the overflow port of the sedimentation tank, the water storage tank is connected to the water outlet of the reverse osmosis device, the concentrate outlet of the reverse osmosis device is connected to a concentrate pipe, a concentrate detection port is provided on the concentrate pipe, and the concentrate pipe is also connected to a branch pipe I connected to the aerobic reactor and a branch pipe II externally connected to the sewage tank.

[0006] The technical problem to be solved by the present invention can be further achieved through the following technical solutions. For the above-mentioned amino acid wastewater recycling treatment device, a partition plate is further installed in the pretreatment tank near the outlet pipe side, and a filter screen is installed on the top of the partition plate.

[0007] The technical problem to be solved by the present invention can be further achieved through the following technical solutions. For the above-mentioned amino acid wastewater recycling treatment device, an outlet pump and an outlet control valve are installed on the outlet pipe.

[0008] The technical problem to be solved by the present invention can be further achieved by the following technical solution. For the above-mentioned amino acid wastewater recycling treatment device, the device also includes a sludge pool, which is connected to the sludge discharge outlet through a sludge conveying pipe, and the sludge conveying pipe is also connected to a sludge return pipe connected to the aerobic reactor.

[0009] The technical problem to be solved by the present invention can be further achieved through the following technical solutions. For the above-mentioned amino acid wastewater recycling treatment device, a sludge conveying control valve and a sludge pump are also installed on the sludge conveying pipeline, and a sludge return control valve is installed on the sludge return pipeline.

[0010] The technical problem to be solved by the present invention can be further achieved by the following technical solutions. For the above-mentioned amino acid wastewater recycling treatment device, a brine pump and a brine control valve are installed on the brine pipeline, a branch pipe control valve I is installed on the branch pipe I, and a branch pipe control valve II is installed on the branch pipe II.

[0011] The technical problem to be solved by the present invention can be further achieved through the following technical solutions. For the above-mentioned amino acid wastewater recycling treatment device, a water supply pipe is also installed on the water storage tank, and a water supply pump and a water supply control valve are installed on the water supply pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Efficient resource recycling and utilization: Through the step-by-step treatment of the pretreatment tank, anaerobic reactor, and aerobic reactor, the organic matter in the amino acid wastewater is effectively degraded, and the biodegradability of the wastewater is improved. Subsequently, the sedimentation tank further removes suspended solids and some biochemical sludge, so that the water quality is initially purified. As an advanced treatment unit, the reverse osmosis device can deeply purify the water quality and remove impurities such as soluble salts, colloids, bacteria, and viruses. The final water quality is close to or reaches the reuse water standard, realizing the efficient recycling of wastewater resources and reducing the consumption of new water resources;

[0014] 2. Environmental protection and energy saving: The anaerobic and aerobic reactors not only promote the degradation of organic matter in wastewater, but the biogas (such as methane) produced during the anaerobic process is also a potential energy source that can be collected and utilized in appropriate ways, such as for power generation or heat supply, thus realizing the conversion of waste into energy. In addition, the brine produced by the reverse osmosis device is treated through the brine pipeline, avoiding secondary pollution to the environment caused by direct discharge. The design of branch pipeline I allows some brine to flow back to the aerobic reactor for reprocessing, improving treatment efficiency, while branch pipeline II ensures that the brine exceeding the standard can be safely discharged into the external sewage pool, further ensuring environmental safety.

[0015] 3. Flexibility and controllability: The design of the present invention also takes into account the flexibility of different treatment stages and the controllability of the overall system. The setting of the concentrate detection port makes it possible to monitor the quality of the concentrate discharged by the reverse osmosis device at any time, adjust the treatment process parameters or select the concentrate discharge path (backflow through branch pipe I or external discharge through branch pipe II) according to the monitoring results, ensure that the effluent water quality meets the standards, improve the adaptability and stability of the system, and help to meet the wastewater treatment needs of different water quality and water volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0017] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0018] Reference Figure 1, an amino acid wastewater recycling treatment device, comprising a pretreatment tank 1, an anaerobic reactor 2, an aerobic reactor 3, a sedimentation tank 4, a reverse osmosis device 5 and a water storage tank 6 arranged in sequence, the pretreatment tank 1 is used to collect and pretreat the amino acid wastewater, mainly for removing large particles, suspended matter, etc. therein, so as to reduce the load on the subsequent treatment unit; the anaerobic reactor 2 is used to receive the pretreated amino acid wastewater, so as to facilitate the use of anaerobic microorganisms to decompose organic matter in the wastewater under anaerobic or hypoxic conditions to produce biogas and a small amount of biological sludge, which can be used for boiler combustion or power generation to achieve energy recovery; the aerobic reactor 3 is used to further remove organic matter and ammonia nitrogen in the amino acid wastewater, thereby improving the biodegradability of the wastewater; the wastewater after aerobic treatment enters the sedimentation tank 4 for mud-water separation; the reverse osmosis device 5 is used to deeply purify the supernatant after sedimentation and separation in the sedimentation tank 4 to remove residual dissolved solids, organic matter and inorganic salts, etc., so as to achieve standard discharge and reuse of the wastewater; the water storage tank 6 is used to store water treated by the reverse osmosis membrane of the reverse osmosis device 5, so as to facilitate subsequent output for production reuse;

[0019] Specifically: an inlet pipe 7 is installed on the upper part of one side of the pretreatment tank 1, and the inlet pipe 7 is externally connected to the amino acid wastewater output pipe, so that the amino acid wastewater can be continuously and stably input. An outlet pipe 10 is installed on the lower part of the other side of the pretreatment tank 1. The outlet pipe 10 is connected to the water inlet of the anaerobic reactor 2, and is used to input the pretreated amino acid wastewater into the anaerobic reactor 2. The outlet of the anaerobic reactor 2 is connected to the water inlet of the aerobic reactor 3, so that the wastewater after anaerobic treatment enters the aerobic reactor 3. A water inlet and an overflow outlet are provided at the top of the sedimentation tank 4, a sludge discharge outlet is provided at the bottom of the sedimentation tank 4, the water outlet of the aerobic reactor 3 is connected to the water inlet of the sedimentation tank 4, the water inlet of the reverse osmosis device 5 is connected to the overflow outlet of the sedimentation tank 4, and the water storage tank 6 is connected to the water outlet of the reverse osmosis device 5, so that the wastewater after aerobic treatment enters the sedimentation tank 4, and the suspended matter is settled to the bottom of the tank by gravity, and the supernatant flows out from the overflow outlet into the reverse osmosis device 5, and then enters the water storage tank 6 for storage after reverse osmosis treatment;

[0020] The brine outlet of the reverse osmosis device 5 is connected to a brine pipe 11, which is provided with a brine detection port 12. The brine pipe 11 is also connected to a branch pipe I14 connected to the aerobic reactor 3 and a branch pipe II connected to the external sewage tank 13. The brine detection port 12 is convenient for testing the brine discharged from the reverse osmosis device 5. The brine that passes the test is fed into the sewage tank 13 via the branch pipe II for subsequent treatment. The brine that fails the test is then fed into the aerobic reactor 3 via the branch pipe I14 for further treatment to ensure that the brine discharge complies with the regulations. A one-way valve is installed at the brine detection port 12 to prevent the brine from leaking.

[0021] Preferably, a concentrated water pump and a concentrated water control valve are installed on the concentrated water pipeline 11, a branch pipe control valve I is installed on the branch pipe I14, and a branch pipe control valve II is installed on the branch pipe II; a water supply pipeline 17 is also installed on the water storage tank 6, and a water supply pump and a water supply control valve are installed on the water supply pipeline 17.

[0022] In order to ensure the sludge concentration in the aerobic reactor 3, the device also includes a sludge tank 15, which is connected to the sludge discharge port through a sludge conveying pipe. The sludge conveying pipe is also connected to a sludge return pipe 16 connected to the aerobic reactor 3. A sludge conveying control valve and a sludge pump are also installed on the sludge conveying pipe. A sludge return control valve is installed on the sludge return pipe 16 to facilitate the return of part of the precipitated sludge to the aerobic reactor 3 as needed to ensure the sludge concentration in the reactor. The remaining sludge enters the sludge tank 15 for subsequent centralized treatment.

[0023] In actual use, a partition plate 8 is also installed in the pretreatment tank 1 near the side of the outlet pipe 10, and a filter screen 9 is installed on the top of the partition plate 8. The partition plate 8 is used to slow down the water flow rate and promote the sedimentation of suspended matter. The filter screen 9 is used to further intercept large particles of impurities to prevent them from entering the subsequent treatment unit and reduce the treatment burden; an outlet pump and an outlet control valve are installed on the outlet pipe 10 to ensure that the wastewater can flow smoothly and controllably into the anaerobic reactor 2.

[0024] The use process of the amino acid wastewater recycling treatment device provided by the utility model is as follows:

[0025] 1. Preprocessing stage

[0026] Amino acid wastewater is introduced into the pretreatment tank through the water inlet pipe. The separator and filter screen perform preliminary physical separation on the wastewater to remove large particles of impurities and suspended solids, slow down the water flow rate, and promote natural sedimentation.

[0027] 2. Anaerobic treatment stage

[0028] The pretreated wastewater enters the anaerobic reactor through the outlet pipe and outlet control valve under the action of the outlet pump. In the anaerobic reactor, anaerobic microorganisms decompose the organic matter in the wastewater under anaerobic conditions, producing by-products such as biogas, while reducing the COD and BOD values ​​of the wastewater.

[0029] 3. Aerobic treatment stage

[0030] The wastewater after anaerobic treatment enters the aerobic reactor, where aerobic microorganisms further oxidize and decompose the organic matter in the wastewater under aerobic conditions, so that the wastewater is purified more thoroughly;

[0031] 4. Precipitation stage

[0032] The wastewater after aerobic treatment enters the sedimentation tank, where the suspended solids naturally settle to the bottom of the tank due to gravity. The sludge at the bottom of the tank is discharged to the sludge tank through the sludge discharge port and the sludge conveying pipeline for subsequent treatment. During this period, part of the sludge is returned to the aerobic reactor through the sludge return pipeline and the sludge return control valve to maintain the balance of the microbial population in the reactor.

[0033] 5. Reverse osmosis treatment stage

[0034] The supernatant from the sedimentation tank enters the reverse osmosis device for deep purification. The filtration of the reverse osmosis membrane removes impurities such as dissolved salts, organic matter, and microorganisms, producing high-quality recycled water.

[0035] The brine produced by the reverse osmosis device is discharged through the brine pipeline and the water quality is monitored at the brine detection port. At the same time, according to the detection results, part of the brine is returned to the aerobic reactor or transferred to an external sewage pool to ensure discharge compliance;

[0036] 6. Storage and water supply stage

[0037] The recycled water generated by the reverse osmosis device is stored in a water storage tank. Subsequently, the recycled water is supplied to users or reused in the production system through water supply pipes, water supply pumps and water supply control valves as needed.

Claims

1. An amino acid wastewater recycling treatment device, characterized by: The system comprises a pretreatment tank, an anaerobic reactor, an aerobic reactor, a sedimentation tank, a reverse osmosis device and a water storage tank, which are arranged in sequence. A water inlet pipe is installed on the upper part of one side of the pretreatment tank, and the water inlet pipe is externally connected to an amino acid wastewater output pipe. A water outlet pipe is installed on the lower part of the other side of the pretreatment tank, and the water outlet pipe is connected to the water inlet of the anaerobic reactor. The water outlet of the anaerobic reactor is connected to the water inlet of the aerobic reactor. A water inlet and an overflow port are provided on the upper part of the sedimentation tank. A sludge discharge port is provided at the bottom of the sedimentation tank. The water outlet of the aerobic reactor is connected to the water inlet of the sedimentation tank. The water inlet of the reverse osmosis device is connected to the overflow port of the sedimentation tank. The water storage tank is connected to the water production port of the reverse osmosis device. The concentrated water port of the reverse osmosis device is connected to a concentrated water pipe. A concentrated water detection port is provided on the concentrated water pipe. The concentrated water pipe is also connected to a branch pipe I connected to the aerobic reactor and a branch pipe II externally connected to the sewage tank.

2. The amino acid wastewater recycling treatment device according to claim 1, characterized in that: A partition plate is also installed in the pretreatment tank near the outlet pipe, and a filter screen is installed on the top of the partition plate.

3. The amino acid wastewater recycling treatment device according to claim 1 or 2, characterized in that: A water outlet pump and a water outlet control valve are installed on the water outlet pipe.

4. The amino acid wastewater recycling treatment device according to claim 1, characterized in that: The device also includes a sludge pool, which is connected to a sludge discharge port through a sludge conveying pipeline. The sludge conveying pipeline is also connected to a sludge return pipeline connected to the aerobic reactor.

5. The amino acid wastewater recycling treatment device according to claim 4, characterized in that: A sludge delivery control valve and a sludge pump are also installed on the sludge delivery pipeline, and a sludge return control valve is installed on the sludge return pipeline.

6. The amino acid wastewater recycling treatment device according to claim 1, characterized in that: A concentrated water pump and a concentrated water control valve are installed on the concentrated water pipeline, a branch pipe control valve I is installed on the branch pipe I, and a branch pipe control valve II is installed on the branch pipe II.

7. The amino acid wastewater recycling treatment device according to claim 1, characterized in that: A water supply pipeline is also installed on the water storage tank, and a water supply pump and a water supply control valve are installed on the water supply pipeline.

Images