Wastewater recovery system applied to L-homoserine workshop

Abstract

The utility model discloses a wastewater recovery system applied to an L-homoserine workshop, and belongs to the technical field of wastewater recovery. The problems that in the prior art, sewage amount is large, and raw material loss is large are solved. According to the technical scheme, the left side of a first pipeline is connected with a fermentation tank batching tank, and the right side of the first pipeline is connected with the bottom of a fermentation recycling tank; and a first pressure gauge is connected between the recycling pump outlet valve and the fermentation recycling pump. According to the utility model, the recycling of waste liquid is realized, the use amount of clean water in a workshop is reduced, and the waste water is generated by materials and waste liquid in the workshop, so that various raw materials required by production for ingredients are contained, and the use amount of raw and auxiliary materials in the workshop is properly reduced when a culture medium is prepared; meanwhile, the material supplementing tank and the fermentation tank sewage discharging system in the workshop are directly connected to the fermentation recycling tank in a butt joint mode, operation is simplified, leakage and leakage of the workshop are reduced, and the sterile operation environment of the workshop is optimized.

Description

Technical Field

[0001] This utility model relates to the field of wastewater recycling technology, specifically a wastewater recycling system applied to an L-homoserine workshop. Background Technology

[0002] Due to the special nature of the production process, the workshop generates a large amount of wastewater. This wastewater contains numerous harmful substances. If discharged directly into water sources, it will pollute surrounding water quality, causing water pollution and leading to ecosystem collapse. If the wastewater is discharged into surface or groundwater without treatment, it will impact the health of nearby residents. Furthermore, the wastewater contains high levels of nutrients such as nitrogen and phosphorus. These substances can easily lead to over-fertilization of farmland in polluted areas, resulting in reduced crop yields and pollution, restricting plant growth, and causing aquatic organisms to die in rivers, severely damaging the aquatic ecosystem.

[0003] Apart from water used for cleaning and cooling, all wastewater in the workshop is generated from the production process. This wastewater contains substances such as ammonia nitrogen. Direct discharge would exceed the limits for all indicators, necessitating further treatment in the wastewater treatment plant. Analysis of the wastewater's origin reveals that the substances are all process residues from the workshop's production, which can be recycled and reused. Furthermore, the ammonia nitrogen in the wastewater can also be recovered and reused.

[0004] In existing technologies, process wastewater from the workshop is sterilized by heating and stored in a wastewater buffer tank before being discharged into the wastewater treatment plant. This results in the loss of some raw materials, increases the company's wastewater treatment volume, and raises production and operating costs. Therefore, there is an urgent need to propose a wastewater recycling system for L-homoserine workshops to solve the problems of large wastewater volume and significant raw material loss. Utility Model Content

[0005] In view of the above facts, in order to solve the problems of large wastewater volume and significant raw material loss, this utility model designs a wastewater recycling system for L-homoserine workshops.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A wastewater recycling system for an L-homoserine workshop includes a fermenter feed tank, a fermentation reuse tank, a fermentation reuse pump, a fermentation reuse tank filter, a first pressure gauge, an empty tank, a seed tank drain line, a feed drain line, a fermenter drain line, a secondary condensate tank, a waste liquid inactivation tank, a steam tank, a seed tank sampling drain line, a fermenter sampling drain line, a wastewater tank, a wastewater pump, a wastewater tank filter, and a second pressure gauge.

[0008] The first pipeline connects to the fermentation tank's ingredient tank on the left and to the bottom of the fermentation reuse tank on the right. The first pipeline is sequentially equipped with the reuse pump outlet valve, the fermentation reuse pump, the fermentation reuse tank filter, and the reuse tank discharge valve.

[0009] A first pressure gauge is connected between the outlet valve of the reuse pump and the fermentation reuse pump on the first pipeline;

[0010] The second pipe connects to the venting tank on the left and to the top of the fermentation reuse tank on the right.

[0011] The third pipe connects to the seed tank's sewage discharge line on the left and to the top of the fermentation reuse tank on the right.

[0012] The fourth pipe connects to the feed and sewage discharge line on the left and to the top of the fermentation recycling tank on the right.

[0013] The fifth pipe connects to the fermentation tank's sewage discharge line on the left and to the top of the fermentation reuse tank on the right.

[0014] The sixth pipe connects to the secondary condensate tank on the left and to the top of the fermentation reuse tank on the right.

[0015] The seventh pipeline connects to the right side of the waste liquid inactivation tank on the left and to the steam tank on the right. The seventh pipeline is sequentially equipped with the automatic steam inlet valve and the manual heating valve of the inactivation tank.

[0016] The eighth pipe connects to the bottom of the waste liquid inactivation tank on the left and to the seed tank sampling and sewage discharge tank on the right.

[0017] The ninth pipe connects to the eighth pipe on the left, with the left connection point between the waste liquid inactivation tank and the seed tank sampling and sewage discharge tank, and the right connection to the fermentation tank sampling and sewage discharge tank.

[0018] The tenth pipe is connected to the top of the sewage tank on the left and to the bottom of the waste liquid inactivation tank on the right. The tenth pipe is equipped with a discharge valve for the inactivation tank.

[0019] The eleventh pipe connects to the top of the fermentation reuse tank on the left and to the bottom of the sewage tank on the right. The eleventh pipe is installed with the sewage pump outlet valve, sewage check valve, sewage pump, sewage tank filter, and sewage tank outlet valve in sequence.

[0020] A second pressure gauge is installed between the outlet valve of the eleventh pipeline sewage pump and the sewage check valve.

[0021] Furthermore: the discharge valve of the reuse tank on the first pipeline is connected to the sewage valve of the reuse tank.

[0022] Furthermore, a negative pressure prevention breathing valve is installed on the top of the sewage tank.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. This invention can effectively reduce dependence on natural water resources and alleviate environmental pressure. By recycling wastewater, the extraction of groundwater and rivers can be reduced, thereby protecting the sustainable use of water resources. Furthermore, wastewater recycling can reduce environmental pollution, as wastewater contains a large number of harmful substances and pollutants, which, if directly discharged into the environment, will cause serious pollution to water bodies, soil, and air. Through wastewater recycling treatment, pollutants in wastewater can be effectively removed, reducing negative environmental impacts and protecting the healthy development of the ecological environment.

[0025] 2. This invention enables the recycling of resources. Wastewater contains certain nutrients and organic matter, which can be reused through appropriate treatment and recycling. Nitrogen and carbon sources in the wastewater can be used to prepare fermentation tank culture media, reducing the loss of these nutrients and maximizing resource utilization.

[0026] 3. This utility model can reduce water costs for enterprises, save water costs, and improve the economic efficiency of enterprises. By recycling wastewater, previously wasted resources can be converted into production water, reducing the environmental impact of wastewater discharge and alleviating pollution pressure. At the same time, wastewater recycling can also realize the circular use of resources, transforming previously wasted resources into useful chemical raw materials or other products, thereby improving the economic efficiency of enterprises. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] In the diagram: 1-Fermentation tank ingredient tank, 2-Fermentation reuse tank, 3-Reuse pump outlet valve, 4-Fermentation reuse pump, 5-Fermentation reuse tank filter, 6-Reuse tank discharge valve, 7-First pressure gauge, 8-Reuse tank drain valve, 9-Empty tank, 10-Seed tank drain line, 11-Feeding drain line, 12-Fermentation tank drain line, 13-Secondary condensate tank, 14-Waste liquid inactivation tank, 15-Steam tank, 16-Inactivation tank steam inlet automatic valve, 17-Inactivation tank heating manual valve, 18-Seed tank sampling drain tank, 19-Fermentation tank sampling drain tank, 20-Wastewater tank, 21-Inactivation tank discharge valve, 22-Anti-negative pressure breathing valve, 23-Wastewater pump outlet valve, 24-Wastewater check valve, 25-Wastewater pump, 26-Wastewater tank filter, 27-Wastewater tank outlet valve, 28-Second pressure gauge. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] In this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0032] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] The preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0036] Example: A wastewater recycling system applied to an L-homoserine workshop in this example includes a fermenter feeding tank 1, a fermentation reuse tank 2, a fermentation reuse pump 4, a fermentation reuse tank filter 5, a first pressure gauge 7, an emptying tank 9, a seed tank sewage discharge pipeline 10, a feeding sewage discharge pipeline 11, a fermenter sewage discharge pipeline 12, a secondary condensate tank 13, a waste liquid inactivation tank 14, a steam tank 15, a seed tank sampling sewage discharge tank 18, a fermenter sampling sewage discharge tank 19, a wastewater tank 20, a wastewater pump 25, a wastewater tank filter 26, and a second pressure gauge 28.

[0037] The first pipeline connects to the fermentation tank feed tank 1 on the left and to the bottom of the fermentation reuse tank 2 on the right. The reuse pump outlet valve 3, the fermentation reuse pump 4, the fermentation reuse tank filter 5, and the reuse tank discharge valve 6 are installed in sequence on the first pipeline.

[0038] On the first pipeline, a first pressure gauge 7 is connected between the outlet valve 3 of the reuse pump and the fermentation reuse pump 4;

[0039] The second pipe connects to the venting tank 9 on the left and to the top of the fermentation reuse tank 2 on the right.

[0040] The third pipe connects to the seed tank sewage pipe 10 on the left and to the top of the fermentation reuse tank 2 on the right.

[0041] The fourth pipe connects to the feed and sewage discharge pipe 11 on the left and to the top of the fermentation recycling tank 2 on the right.

[0042] The fifth pipe connects to the fermentation tank's sewage discharge pipe 12 on the left and to the top of the fermentation reuse tank 2 on the right.

[0043] The sixth pipe connects to the secondary condensate tank 13 on the left and to the top of the fermentation reuse tank 2 on the right.

[0044] The seventh pipeline connects to the right side of the waste liquid inactivation tank 14 on the left and to the steam tank 15 on the right. The seventh pipeline is sequentially equipped with the induction steam valve 16 and the heating manual valve 17 of the inactivation tank.

[0045] The eighth pipe is connected to the bottom of the waste liquid inactivation tank 14 on the left and to the seed tank sampling and sewage discharge tank 18 on the right.

[0046] The ninth pipe connects to the eighth pipe on the left, with the left connection point between the waste liquid inactivation tank 14 and the seed tank sampling and sewage discharge tank 18, and the right pipe connects to the fermentation tank sampling and sewage discharge tank 19.

[0047] The tenth pipe is connected to the top of the sewage tank 20 on the left and to the bottom of the waste liquid inactivation tank 14 on the right. The tenth pipe is equipped with a discharge valve 21 for the inactivation tank.

[0048] The eleventh pipe is connected to the top of the fermentation reuse tank 2 on the left and to the bottom of the sewage tank 20 on the right. The eleventh pipe is installed with the sewage pump outlet valve 23, sewage check valve 24, sewage pump 25, sewage tank filter 26, and sewage tank outlet valve 27 in sequence.

[0049] A second pressure gauge 28 is installed between the outlet valve 23 of the eleventh pipeline sewage pump and the sewage check valve 24.

[0050] More specifically: the wastewater discharge valve 8 of the recycling tank is connected between the discharge valve 6 of the recycling tank on the first pipeline and the fermentation recycling tank 2.

[0051] More specifically: a negative pressure breathing valve 22 is installed on the top of the sewage tank 20.

[0052] More specifically: the seed tank sampling and sludge discharge tank 18 and the fermentation tank sampling and sludge discharge tank 19 will take samples at regular intervals according to process requirements during the cultivation process. During the sampling process, a small amount of fermentation liquid will be discharged from the sampling port and then enter the waste liquid inactivation tank 14 through the pipeline (because the workshop requires aseptic operation, live bacteria cannot be discharged directly and must be inactivated).

[0053] After being heated and sterilized, the waste liquid is discharged into the wastewater tank 20. When the liquid level in the wastewater tank 20 reaches the upper limit or the liquid level in the fermentation reuse tank 2 is low, the waste liquid in the wastewater tank 20 is pumped into the fermentation reuse tank 2 via the wastewater pump 25 to prepare for the fermentation tank to be brought to volume.

[0054] When the fermentation tanks in the workshop are being prepared, the fermentation reuse pump 4 directly pumps the materials into each tank for use. This achieves the recycling of waste liquid and reduces the amount of clean water used in the workshop. Since the wastewater is generated from the materials and waste liquid in the workshop, it contains various raw materials required for production. Before use, the water in the fermentation reuse tank 2 needs to be sampled and analyzed to determine the amount of substances contained in the water. This allows for an appropriate reduction in the amount of raw and auxiliary materials used in the workshop when preparing the culture medium. At the same time, the workshop's material replenishment and sewage discharge pipeline 11 and the fermentation tank sewage discharge pipeline 12 are directly connected to the fermentation reuse tank 2, simplifying operations, reducing leaks and spills in the workshop, and optimizing the aseptic operating environment of the workshop.

[0055] More specifically: During workshop production, a large amount of wastewater is generated due to the needs of the production process. This wastewater originates from various systems within the workshop, primarily from evaporators, fermenters, seed tanks, and aseptic storage tanks during operation. Evaporators, in particular, generate wastewater by concentrating the fermentation broth through heating and evaporating excess water. This process can produce up to 20m³ of wastewater daily. 3The process condensate has a high ammonia nitrogen content. If it is discharged directly into the wastewater treatment plant, it will increase the amount of wastewater to be treated. After improvement, this condensate can be recycled into the fermentation reuse tank for secondary use. This not only reduces the amount of clean water used in the plant, but also allows for a reduction in the amount of ammonia nitrogen added to the culture medium by analyzing the ammonia nitrogen content in the condensate.

[0056] More specifically: based on a production schedule of 5 batches every 4 days, approximately 25m³ of constant volume water is used per day. 3 After the improvement, recycled water is used instead of fresh water, saving 25 tons of fresh water per day. At 7.4 yuan per ton, this saves 9,125 tons of water per year and 67,525 yuan in costs per year.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; as long as there is no structural conflict, the features in the specific embodiments disclosed in this application can be combined with each other in any way, and will not cause the substance of the corresponding technical solutions to deviate from the scope of the technical solutions of this utility model.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wastewater recycling system for use in an L-homoserine workshop, characterized in that, Includes fermenter feed tank (1), fermentation reuse tank (2), fermentation reuse pump (4), fermentation reuse tank filter (5), first pressure gauge (7), empty tank (9), seed tank sewage pipeline (10), feed sewage pipeline (11), fermenter sewage pipeline (12), secondary condensate tank (13), waste liquid inactivation tank (14), steam tank (15), seed tank sampling sewage tank (18), fermenter sampling sewage tank (19), sewage tank (20), sewage pump (25), sewage tank filter (26), and second pressure gauge (28); The first pipeline is connected to the fermentation tank feed tank (1) on the left and to the bottom of the fermentation recycling tank (2) on the right. The recycling pump outlet valve (3), the fermentation recycling pump (4), the fermentation recycling tank filter (5), and the recycling tank discharge valve (6) are installed in sequence on the first pipeline. A first pressure gauge (7) is connected between the outlet valve (3) of the reuse pump and the fermentation reuse pump (4) on the first pipeline; The second pipe connects to the top of the empty tank (9) on the left and to the top of the fermentation reuse tank (2) on the right. The third pipe connects to the seed tank drain line (10) on the left and to the top of the fermentation reuse tank (2) on the right. The fourth pipe is connected to the feed and sewage discharge pipeline (11) on the left and to the top of the fermentation recycling tank (2) on the right. The fifth pipe is connected to the fermentation tank drain line (12) on the left and to the top of the fermentation reuse tank (2) on the right. The sixth pipe is connected to the top of the secondary condensate tank (13) on the left and to the fermentation reuse tank (2) on the right. The seventh pipeline connects to the waste liquid inactivation tank (14) on the left and to the steam tank (15) on the right. The seventh pipeline is equipped with the induction steam automatic valve (16) and the induction heating manual valve (17) of the inactivation tank in sequence. The eighth pipeline is connected to the bottom of the waste liquid inactivation tank (14) on the left and to the seed tank sampling and sewage discharge tank (18) on the right. The ninth pipe is connected to the eighth pipe on the left side, with the left connection point between the waste liquid inactivation tank (14) and the seed tank sampling and sewage discharge tank (18), and the right side is connected to the fermentation tank sampling and sewage discharge tank (19). The tenth pipe is connected to the top of the sewage tank (20) on the left and to the bottom of the waste liquid inactivation tank (14) on the right. The tenth pipe is equipped with a discharge valve (21) for the inactivation tank. The eleventh pipe is connected to the top of the fermentation reuse tank (2) on the left and to the bottom of the sewage tank (20) on the right. The eleventh pipe is installed with the sewage pump outlet valve (23), sewage check valve (24), sewage pump (25), sewage tank filter (26), and sewage tank outlet valve (27) in sequence. A second pressure gauge (28) is installed between the outlet valve (23) of the eleventh pipeline sewage pump and the sewage check valve (24).

2. The wastewater recovery system for an L-homoserine workshop according to claim 1, characterized in that: The first pipeline connects the waste tank discharge valve (6) of the recycling tank and the fermentation recycling tank (2) with the waste tank drain valve (8).

3. The wastewater recovery system for an L-homoserine workshop according to claim 1, characterized in that: A negative pressure breathing valve (22) is installed on the top of the sewage tank (20).

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