Efficient gibberellin production wastewater treatment system

Abstract

The utility model provides an efficient gibberellin production wastewater treatment system. Comprising a collecting tank, a microfilter, a pH adjusting tank, a flocculation reaction tank, a coagulation reaction tank, a solid-liquid separation tank, a high-concentration wastewater collecting tank, a hydrolysis acidification tank, a sedimentation tank, a comprehensive adjusting tank, a water distribution tank, an IC anaerobic reactor, a two-stage AO biological denitrification tank, a secondary sedimentation tank, an intermediate water tank, a magnetic coagulation precipitator and a clean water tank which are sequentially arranged. The COD (Chemical Oxygen Demand) of the discharged water treated by the process can stably reach below 300mg / L for a long time, and meanwhile, the stable discharged water quality of the discharged water is that NH3-N is less than or equal to 45mg / L, TP is less than or equal to 8mg / L and SS is less than or equal to 200mg / L, so that the sewage discharge standard of enterprises is met.

Description

Technical Field

[0001] The utility model belongs to the field of wastewater treatment engineering of pesticide technical manufacturing, and particularly relates to a wastewater treatment system of gibberellin production by biological fermentation method. Background Art

[0002] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and shall not necessarily be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art.

[0003] Gibberellic acid, as a plant growth regulator, is a secondary metabolite of the biological fermentation process and belongs to the agricultural hormone class. It plays an important role in the growth and development of plants. Due to the global population growth and the increasing demand for high-quality agricultural products, the market demand has increased significantly.

[0004] In recent decades, gibberellins have gained wide popularity as an important plant hormone, most of which are derived from diterpene acids. The production of gibberellins involves the synthesis of terpenoid pathway in plastids, followed by modifications in the endoplasmic reticulum and cytoplasm until they become biologically active.

[0005] Gibberellin wastewater is mainly produced in the process of biological fermentation production. The mother liquor of Gibberellin is first fermented, and then the residual waste liquid after the target product Gibberellin is extracted is discharged as sewage. It mainly contains a large amount of amino acids, sugars, sulfate and other substances remaining in the fermentation and extraction process. It is a typical high-nitrogen, high-suspended matter, high-sulfate organic wastewater with high pollutant concentration, and is a high-concentration difficult-to-degrade organic wastewater.

[0006] The production wastewater mainly includes raffinate wastewater, workshop cloth washing wastewater, ultrafiltration concentrated water, acid and alkali production wastewater, low-concentration wastewater, sludge dehydration filtrate and domestic sewage. Its water quality characteristics are as follows:

[0007] (1) There are many types of wastewater, and the quality and quantity of wastewater fluctuate greatly, which has a strong impact on the subsequent treatment system, easily causing unstable system operation and substandard effluent;

[0008] (2) The wastewater contains solids, which may easily cause solid sedimentation and equipment blockage;

[0009] (3) The sulfate content in the wastewater is high, which will inhibit the subsequent biochemical treatment system if there is no pretreatment.

[0010] (4) The wastewater contains a lot of organic matter, causing serious pollution. Utility Model Content

[0011] In order to solve the above problems, the utility model provides a high-efficiency gibberellin production wastewater treatment system. In view of the characteristics of high sulfate content and high total nitrogen content in gibberellin wastewater, the present invention removes sulfate in a flocculation reaction tank, a coagulation reaction tank, a solid-liquid separation tank and a hydrolysis acidification tank respectively, and adopts two-stage AO to remove ammonia nitrogen, so that the treated high-efficiency gibberellin production wastewater fully meets the emission standards, achieves a good treatment effect, and reduces the pollutancy of the wastewater. At the same time, the system of the utility model does not need to add lime, thereby avoiding scaling of pipes and equipment.

[0012] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0013] The first aspect of the utility model provides a high-efficiency gibberellin production wastewater treatment system, including: a collection tank, a microfiltration machine, a pH adjustment tank, a flocculation reaction tank, a coagulation reaction tank, a solid-liquid separation tank, a high-concentration wastewater collection tank, a hydrolysis acidification tank, a sedimentation tank, a comprehensive regulating tank, a water distribution tank, an IC anaerobic reactor, a two-stage AO biological denitrification tank, a secondary sedimentation tank, an intermediate water tank, a magnetic coagulation sedimentator, and a clear water tank, which are arranged in sequence.

[0014] The high-efficiency gibberellin production wastewater treatment system of the utility model can operate normally and stably, and the effluent COD can be stably maintained below 300 mg / L for a long time. At the same time, the effluent can achieve stable discharge water quality of NH3-N≤45 mg / L, TP≤8 mg / L, and SS≤200 mg / L, meeting the enterprise's sewage discharge standards.

[0015] In some embodiments, a pump is provided on the pipeline between the collection tank and the microfilter to pump the effluent from the collection tank to the microfilter for filtration.

[0016] In some embodiments, the pH adjustment tank is provided with a mechanical stirring device to balance the water quality under the action of mechanical stirring.

[0017] In some embodiments, the coagulation reaction tank is provided with a dosing device to add PAM agent into the coagulation reaction tank to bridge between suspended particle flocs, thereby aggregating the particles.

[0018] In some embodiments, the sludge in the solid-liquid separation tank is discharged into a sludge treatment system.

[0019] In some embodiments, a pump is provided between the high-concentration wastewater collection tank and the hydrolysis acidification tank to lift the effluent from the high-concentration wastewater collection tank to the hydrolysis acidification tank via the pump.

[0020] In some embodiments, the comprehensive regulating tank is provided with a plurality of water inlets so as to introduce other wastewater into the comprehensive regulating tank and mix it with the supernatant from the hydrolysis acidification tank to balance the water quality.

[0021] In some embodiments, the comprehensive regulating tank is provided with a stirring device, which has a good mixing effect, uniform water quality and quantity, and greatly reduced water quality fluctuations.

[0022] In some embodiments, a pump is provided between the intermediate water tank and the magnetic coagulation sedimentation device to pump the effluent from the intermediate water tank into the magnetic coagulation sedimentation device.

[0023] In some embodiments, the magnetic coagulation precipitator is provided with a magnetic powder dosing device and a dosing device, so that by adding magnetic powder and phosphorus removal agent, the magnetic powder and phosphate pollutants are flocculated and combined into one, forming larger and denser flocs, enhancing the coagulation and flocculation effects, thereby achieving the purpose of high-speed sedimentation and efficiently removing phosphates from sewage.

[0024] Beneficial effects of the utility model

[0025] (1) In view of the high solid content in wastewater, the system of the utility model is equipped with a microfilter to effectively reduce the solid content in the wastewater and prevent pipe and water pump blockage.

[0026] (2) In view of the large fluctuations in the incoming water quality, the utility model sets up a comprehensive regulating tank to balance both the water quality and the water volume, which is conducive to the good operation of the later biological stage process. The comprehensive regulating tank is equipped with a stirring device, which has a good mixing effect, uniform water quality and water volume, and greatly reduces water quality fluctuations.

[0027] (3) In view of the high content of organic matter and sulfate in wastewater, the system is equipped with a flocculation reaction tank, a coagulation reaction tank, a solid-liquid separation tank, a hydrolysis acidification tank and an IC anaerobic reactor to ensure the treatment efficiency of COD in wastewater, while also providing the system with shock resistance.

[0028] (4) The system of the utility model is simple, has low operating cost, obvious benefits, strong practicality, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0030] Figure 1 This is a process flow chart of the utility model of a high-efficiency gibberellin production wastewater treatment system, including: 1. collection tank, 2. microfiltration machine, 3. pH adjustment tank, 4. flocculation reaction tank, 5. coagulation reaction tank, 6. solid-liquid separation tank, 7. high-concentration wastewater collection tank, 8. hydrolysis acidification tank, 9. sedimentation tank, 10. comprehensive regulating tank, 11. water distribution tank, 12. IC anaerobic reactor, 13. two-stage AO biological denitrification tank, 14. secondary sedimentation tank, 15. intermediate water tank, 16. magnetic coagulation sedimentator, 17. clear water tank. DETAILED DESCRIPTION

[0031] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0032] The present invention will be further described in detail below in conjunction with specific embodiments. It should be noted that the specific embodiments are intended to explain the present invention rather than to limit it.

[0033] like Figure 1 As shown, the utility model provides a high-efficiency gibberellin production wastewater treatment system, comprising: a collection tank 1, a microfiltration machine 2, a pH adjustment tank 3, a flocculation reaction tank 4, a coagulation reaction tank 5, a solid-liquid separation tank 6, a high-concentration wastewater collection tank 7, a hydrolysis acidification tank 8, a sedimentation tank 9, a comprehensive regulating tank 10, a water distribution tank 11, an IC anaerobic reactor 12, a two-stage AO biological denitrification tank 13, a secondary sedimentation tank 14, an intermediate water tank 15, a magnetic coagulation sedimentator 16, and a clear water tank 17, which are arranged in sequence.

[0034] It should be noted that all devices in the present invention are commercially available products, and the installation, connection and use of each device in the system and between devices can adopt conventional settings in the industry, and the present invention does not make any special limitations on this.

[0035] Furthermore, a pump is provided on the pipeline between the collection tank 1 and the microfilter 2 to lift the effluent from the collection tank 1 to the microfilter 2 for filtration.

[0036] Furthermore, the pH adjustment tank 3 is provided with a mechanical stirring device to balance the water quality under the action of mechanical stirring.

[0037] Furthermore, the coagulation reaction tank 5 is provided with a dosing device to add PAM agent into the coagulation reaction tank 5 to bridge between the suspended particle flocs, thereby aggregating the particles.

[0038] Furthermore, the sludge in the solid-liquid separation tank 6 is discharged into a sludge treatment system.

[0039] Furthermore, a pump is provided between the high-concentration wastewater collection tank 7 and the hydrolysis acidification tank 8 to lift the effluent from the high-concentration wastewater collection tank 7 to the hydrolysis acidification tank 8 via the pump.

[0040] Furthermore, the comprehensive regulating tank 10 is provided with a plurality of water inlets so as to introduce other wastewater into the comprehensive regulating tank 10 and mix it with the supernatant from the hydrolysis acidification tank 8 to balance the water quality.

[0041] Furthermore, the comprehensive regulating tank 10 is provided with a stirring device, which has a good mixing effect, uniform water quality and quantity, and greatly reduces water quality fluctuations.

[0042] Furthermore, a pump is provided between the intermediate water tank 15 and the magnetic coagulation sedimentation tank 16 to pump the effluent from the intermediate water tank 15 into the magnetic coagulation sedimentation tank 16 .

[0043] Furthermore, the magnetic coagulation precipitator 16 is provided with a magnetic powder dosing device and a dosing device, so that the magnetic powder and the phosphate pollutants are flocculated and combined into one by adding magnetic powder and phosphorus removal agent, thereby generating larger and denser flocs, enhancing the coagulation and flocculation effects, thereby achieving the purpose of high-speed sedimentation and efficiently removing phosphates from sewage.

[0044] The specific process flow is described as follows:

[0045] (1) Wastewater is pumped into a collection tank 1, pumped to a microfilter 2, filtered to remove solids and suspended matter in the water, and then flows by gravity into a pH adjustment tank 3.

[0046] (2) Under the action of mechanical stirring, the wastewater is balanced in the pH adjustment tank 3.

[0047] (3) The effluent from the pH adjustment tank 3 flows into the flocculation reaction tank 4 by gravity, and flocculants are added into the flocculation reaction tank 4 to make the suspended matter and colloids in the sewage quickly form floccules with larger particles.

[0048] (4) The effluent from the flocculation reaction tank 4 flows into the coagulation reaction tank 5 by gravity. PAM reagent is added into the coagulation reaction tank 5 to form bridges between the suspended particle flocs, thereby aggregating the particles.

[0049] (5) The effluent from the coagulation reaction tank 5 flows by gravity into the solid-liquid separation tank 6. The suspended solids settle at the bottom of the inclined plate under the action of gravity. The sludge is discharged into the sludge treatment system, and the supernatant flows by gravity into the high-concentration wastewater collection tank 7.

[0050] (6) The effluent from the high-concentration wastewater collection tank 7 is pumped to the hydrolysis acidification tank 8. In the hydrolysis acidification tank 8, the complex macromolecular organic matter in the wastewater is decomposed into small molecular organic matter, which improves the biodegradability of the wastewater. At the same time, the sulfate ions in the wastewater are reduced to avoid inhibition of the subsequent biochemical system.

[0051] (7) The effluent from the hydrolysis and acidification tank 8 flows by gravity into the sedimentation tank 9. After the mud and water are separated by gravity, the sludge is discharged into the sludge treatment system, and the supernatant flows by gravity into the comprehensive regulating tank 10 to balance the water quality with other wastewater (other wastewater includes workshop floor washing wastewater and domestic sewage, and the mixing ratio is selected according to the water quality). The effluent from the comprehensive regulating tank 10 flows by gravity into the water distribution tank 11.

[0052] (8) The effluent from the water distribution tank 11 is pumped into the IC anaerobic reactor 12, where small molecular organic pollutants in the wastewater are further degraded and converted into biogas, a bioenergy source, while granular sludge proliferates.

[0053] (9) The effluent of the IC anaerobic reactor 12 flows by gravity into the two-stage AO biological denitrification tank 13 to further remove organic pollutants in the wastewater. At the same time, ammonia nitrogen and total nitrogen are removed by the action of nitrifying bacteria and denitrifying bacteria. The effluent of the two-stage AO flows by gravity into the secondary sedimentation tank 14. After the sludge and water in the secondary sedimentation tank 14 are separated by gravity, the sludge is discharged into the sludge treatment system, and the supernatant flows by gravity into the intermediate water tank 15.

[0054] (10) The effluent from the intermediate water tank 15 is pumped into the magnetic coagulation sedimentation tank 16. By adding magnetic powder and phosphorus removal agent, the magnetic powder and phosphate pollutants are flocculated and combined into one, forming larger and denser flocs, strengthening the coagulation and flocculation effects, thereby achieving the purpose of high-speed sedimentation and efficiently removing phosphates from sewage. The supernatant separated by the magnetic coagulation sedimentation tank 16 flows by gravity into the clear water tank 17. The sludge is discharged into the sludge treatment system.

[0055] (11) The effluent quality of the clean water tank 17 is: COD ≤ 300 mg / L, NH3-N ≤ 45 mg / L, TP ≤ 8 mg / L, SS ≤ 200 mg / L, meeting the effluent discharge requirements.

[0056] The high-efficiency gibberellin production wastewater treatment system of the utility model can effectively improve the drainage water quality of high-efficiency gibberellin production wastewater, so that the effluent water quality reaches the level of COD≤300mg / L, NH3-N≤45mg / L, TP≤8mg / L, SS≤200mg / L. The system technology of the invention is mature, the operation is stable, and the effluent meets the standards, which provides a detailed and reliable technical reference for the treatment of high-efficiency gibberellin production wastewater. Therefore, it is expected to be widely used in the field of environmental protection and solve the pollution control problems of similar production enterprises.

[0057] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An efficient gibberellin production wastewater treatment system, characterized in that: include: The collection tank, microfiltration machine, pH adjustment tank, flocculation reaction tank, coagulation reaction tank, solid-liquid separation tank, high-concentration wastewater collection tank, hydrolysis acidification tank, sedimentation tank, comprehensive regulating tank, water distribution tank, IC anaerobic reactor, two-stage AO biological denitrification tank, secondary sedimentation tank, intermediate water tank, magnetic coagulation sedimentator, and clear water tank are arranged in sequence.

2. The high-efficiency gibberellin production wastewater treatment system according to claim 1, characterized in that: A pump is arranged on the pipeline between the collecting tank and the microfilter.

3. The high-efficiency gibberellin production wastewater treatment system according to claim 1, characterized in that: The pH adjustment tank is provided with a mechanical stirring device.

4. The high-efficiency gibberellin production wastewater treatment system according to claim 1, characterized in that: The coagulation reaction tank is provided with a dosing device.

5. The high-efficiency gibberellin production wastewater treatment system according to claim 1, characterized in that: The sludge in the solid-liquid separation tank is discharged into the sludge treatment system.

6. The high-efficiency gibberellin production wastewater treatment system according to claim 1, characterized in that: A pump is provided between the high-concentration wastewater collection tank and the hydrolysis acidification tank.

7. The high-efficiency gibberellin production wastewater treatment system according to claim 1, characterized in that: The comprehensive regulating pool is provided with a plurality of water inlets.

8. The high-efficiency gibberellin production wastewater treatment system according to claim 1, characterized in that: The comprehensive regulating tank is provided with a stirring device.

9. The high-efficiency gibberellin production wastewater treatment system according to claim 1, characterized in that: A pump is arranged between the intermediate water tank and the magnetic coagulation sedimentation tank.

10. The high-efficiency gibberellin production wastewater treatment system according to claim 1, characterized in that: The magnetic coagulation precipitator is provided with a magnetic powder dosing device and a dosing device.

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