Test equipment for simulating activated sludge process sewage treatment process facility

Abstract

The invention belongs to the field of sewage treatment, and particularly relates to experimental equipment for simulating an activated sludge process sewage treatment process facility, which comprises a regulating tank, a hydrolysis tank, a primary sedimentation tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a physicochemical tank and a clean water tank which are connected in sequence, and all the devices are provided with constant temperature devices. The constant temperature device is arranged on the test equipment, so that the influence of temperature difference on the simulation test equipment is avoided, and sewage treatment process facilities in a factory can be completely simulated. Besides, by arranging a plurality of flow pumps capable of being automatically started and stopped, electromagnetic valves and liquid level controllers, the automatic control of the test equipment is realized, and the working intensity of test equipment operators is reduced.

Description

Technical Field

[0001] The invention belongs to the field of sewage treatment, and in particular relates to an experimental device for simulating activated sludge method sewage treatment process facilities. Background Art

[0002] High-salt solid wastewater usually contains inorganic salts, organic matter, microorganisms, heavy metals, etc. The inorganic salt content and heavy metal content have inhibitory and significant impacts on activated sludge. Direct entry into the system may cause an impact on the biochemical section, posing great operational and environmental risks.

[0003] Before the wastewater is connected to the system, it is necessary to simulate the operation of the pilot equipment in advance to conduct a good analysis of the biodegradability and toxicity of the water quality, and to continuously adjust and test according to the operating status of the pilot equipment to demonstrate the process parameters that are more in line with the operation of the system in the plant. However, there are some difficulties in completely simulating the sewage treatment process facilities in the plant, such as the impact of water temperature on the test and the high workload of the test equipment operators.

[0004] Therefore, how to solve the impact of water temperature on sewage treatment process facilities in simulated plant areas and how to reduce the workload of test equipment operators are technical issues that urgently need to be solved in this field.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0006] The disclosed embodiment provides an experimental device for simulating an activated sludge wastewater treatment process facility, comprising: a regulating tank, a hydrolysis tank, a primary sedimentation tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a physicochemical tank and a clear water tank connected in sequence; and, all of the above devices are equipped with a constant temperature device.

[0007] In an optional embodiment, the water temperature set by the thermostat is consistent with the actual water temperature of the factory sewage treatment system.

[0008] In an optional embodiment, the primary sedimentation tank, the secondary sedimentation tank and the physicochemical tank are connected to the sludge tank, and the connecting pipeline is provided with a solenoid valve, wherein the solenoid valve can be set to automatically open and close time according to experimental requirements.

[0009] In an optional embodiment, the regulating tank is provided with a variable frequency boost pump, which can start high and stop low according to the liquid level in the regulating tank; and the anoxic tank is provided with a high liquid level water stop automatic control device.

[0010] In an optional embodiment, the anoxic tank is provided with a metering pump, which is suitable for adding a carbon source to the anoxic tank and the flow rate and start and stop time of the metering pump can be adjusted according to test conditions.

[0011] In an optional embodiment, the aerobic tank is provided with a micro aeration fan, and a denitrification pump is provided at the end of the aerobic tank. The denitrification pump is suitable for delivering sewage to the front end of the anoxic tank and the flow rate and start and stop time of the denitrification pump can be adjusted according to the test conditions.

[0012] In an optional embodiment, the primary sedimentation tank is provided with a first reflux pump, and the first reflux pump is suitable for transporting the sludge in the primary sedimentation tank to the hydrolysis tank.

[0013] In an optional embodiment, the secondary sedimentation tank is provided with a second reflux pump, and the second reflux pump is suitable for transporting the sludge in the secondary sedimentation tank to the front end of the anoxic tank.

[0014] In an optional embodiment, the physicochemical tank is provided with a dosing pump, and the flow rate and start and stop time of the dosing pump can be adjusted according to the test conditions.

[0015] The beneficial effect of the present invention is that the present invention provides an experimental device for simulating an activated sludge method sewage treatment process facility. By equipping the experimental device with a constant temperature device, the influence of temperature difference on the simulated experimental device is avoided, and the sewage treatment process facility in the plant area can be scaled down and fully simulated; and through the simulated operation experiment, it can be analyzed whether the sewage treatment process facility in the plant area can treat high-salinity solid wastewater. In addition, by setting a number of flow pumps, solenoid valves and liquid level controllers that can be automatically started and stopped, the automatic control of the experimental device is realized, and the workload of the test equipment operator is reduced.

[0016] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A process flow chart of an experimental device for simulating an activated sludge wastewater treatment process facility provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0021] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0022] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0023] The research found that the shortcomings of the existing technology are: before the wastewater is connected to the system, it is necessary to simulate the operation of the pilot equipment in advance to conduct a good analysis of the biodegradability and toxicity of the water quality, and the process parameters that are more in line with the operation of the system in the plant can be continuously adjusted and tested according to the operating status of the pilot equipment. However, there are some difficulties in completely simulating the sewage treatment process facilities in the plant, such as the impact of water temperature on the test and the high workload of the test equipment operators.

[0024] Based on the above research, the embodiments of the present disclosure provide an experimental device for simulating an activated sludge wastewater treatment process facility to solve the above problems.

[0025] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present disclosure for the above problems below should be the contributions made by the inventor to the present disclosure during the disclosure process.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0028] See also Figure 1 The embodiment of the present disclosure provides an experimental device for simulating an activated sludge method sewage treatment process facility, including: a regulating tank, a hydrolysis tank, a primary sedimentation tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a physicochemical tank, and a clear water tank connected in sequence; and, the above equipment is equipped with a constant temperature device. The water temperature set by the constant temperature device is consistent with the actual water temperature of the factory sewage treatment system. The influence of temperature difference on the simulation test equipment is avoided, and the sewage treatment process facilities in the factory can be fully simulated.

[0029] In some embodiments, the primary sedimentation tank, the secondary sedimentation tank and the physicochemical tank are connected to the sludge tank, and the connecting pipeline is provided with a solenoid valve, wherein the solenoid valve can be set to automatically open and close time according to experimental requirements.

[0030] In some embodiments, a variable frequency boost pump is provided between the regulating tank and the hydrolysis tank, and the boost pump can start high and stop low according to the liquid level in the regulating tank; and a high liquid level water stop automatic control device is provided in the anoxic tank.

[0031] In some embodiments, the anoxic tank is provided with a metering pump, which is suitable for adding a carbon source to the anoxic tank and the flow rate and start and stop time of the metering pump can be adjusted according to the test conditions.

[0032] In some embodiments, the aerobic tank is provided with a micro aeration fan, and a denitrification pump is provided at the end of the aerobic tank. The denitrification pump is suitable for delivering sewage to the front end of the anoxic tank, and the flow rate and start and stop time of the denitrification pump can be adjusted according to the test conditions.

[0033] In some embodiments, the primary sedimentation tank is provided with a first return pump, and the first return pump is suitable for conveying the sludge in the primary sedimentation tank to the hydrolysis tank.

[0034] In some embodiments, the secondary sedimentation tank is provided with a second reflux pump, and the second reflux pump is suitable for conveying the sludge in the secondary sedimentation tank to the front end of the anoxic tank.

[0035] In some embodiments, the physicochemical tank is provided with a dosing pump, and the flow rate and start and stop time of the dosing pump can be adjusted according to the test conditions.

[0036] The specific implementation modes of the present invention will be further explained below through examples, but it is not intended to limit the protection scope of the present invention to the scope described in the examples.

[0037] Embodiment 1, the specific steps are as follows: The design scale of this test equipment is designed according to 10kg / h; the volume ratio of this test equipment to the sewage plant pool is 1:63000. The factory wastewater is input into the regulating tank, and the lifting pump in the regulating tank starts high and stops low according to the wastewater level to ensure that the test equipment is not affected by peak flow or valley flow.

[0038] Further, the wastewater in the regulating tank enters the hydrolysis tank to promote the decomposition of organic matter. Then the wastewater enters the primary sedimentation tank to allow the solid particles in the wastewater to settle to the bottom of the primary sedimentation tank to achieve solid-liquid separation. The first reflux pump in the primary sedimentation tank is started to transport the sludge in the primary sedimentation tank to the hydrolysis tank for further decomposition.

[0039] Furthermore, the wastewater in the primary sedimentation tank enters the anoxic tank, and the high liquid level water cut-off automatic control device of the anoxic tank is suitable for controlling the flow of wastewater into the anoxic tank so that the liquid level of the anoxic tank remains relatively stable. The anoxic tank can effectively reduce pollutants such as nitrogen and phosphorus in the wastewater.

[0040] Furthermore, the wastewater in the anoxic pool enters the aerobic pool, and the micro-aeration fan in the aerobic pool is started to provide sufficient oxygen for the microorganisms in the aerobic pool to promote the microorganisms in the aerobic pool to convert ammonia nitrogen in the wastewater into nitrates, and at the same time, accelerate the microorganisms to decompose organic matter in the wastewater. The denitrification pump at the end of the aerobic pool is turned on according to the preset time and flow rate, and the sewage from the aerobic pool is transported to the front end of the anoxic pool, so that the water containing nitrates flows back into the anoxic environment. At this time, the metering pump in the anoxic pool automatically adds carbon source to the anoxic pool according to the preset time and flow rate, accelerating the denitrifying bacteria in the anoxic pool to convert nitrates into nitrogen gas, thereby reducing the nitrogen content in the wastewater.

[0041] Furthermore, the wastewater in the aerobic tank enters the secondary sedimentation tank to separate the mixed liquid treated by microorganisms in the aerobic tank into mud and water. The sludge settled in the secondary sedimentation tank is transported to the front end of the anoxic tank through the second reflux pump to continue to remove nitrogen from the sludge.

[0042] Furthermore, the wastewater in the secondary sedimentation tank enters the physicochemical tank, and the dosing pump in the physicochemical tank adds PAC to the physicochemical tank. PAC reacts with organic matter and heavy metal ions in the wastewater to form precipitates, and at the same time adsorbs suspended matter and colloidal substances in the wastewater to form precipitates. After sedimentation, the wastewater in the physicochemical tank overflows into the clear water tank. Finally, the wastewater in the clear water tank is analyzed to detect whether the wastewater in the clear water tank meets the discharge standards. If it meets the discharge standards, it can be discharged.

[0043] The primary sedimentation tank, secondary sedimentation tank and physicochemical tank are connected to the sludge tank, and the connecting pipes are provided with solenoid valves, which automatically open according to the preset time to discharge the sludge in the primary sedimentation tank, secondary sedimentation tank and physicochemical tank into the sludge tank for centralized treatment.

[0044] The denitrification pump, metering pump, solenoid valve and dosing pump in Example 1 can flexibly adjust the flow rate and opening / closing time according to the actual test situation to ensure the best purification effect.

[0045] In summary, the experimental equipment used to simulate the activated sludge method sewage treatment process facilities can avoid the influence of temperature difference on the simulated experimental equipment by equipping the experimental equipment with a constant temperature device, and can achieve proportional reduction and complete simulation of the sewage treatment process facilities in the factory area; and through the simulated operation experiment, it can analyze whether the sewage treatment process facilities in the factory area can treat high-salinity solid wastewater. In addition, by setting up a number of flow pumps, denitrification pumps, dosing pumps, solenoid valves and liquid level controllers that can be automatically started and stopped, the automatic control of the experimental equipment is realized, reducing the workload of the test equipment operators.

[0046] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An experimental device for simulating an activated sludge wastewater treatment process facility, characterized in that: include: The regulating tank, hydrolysis tank, primary sedimentation tank, anoxic tank, aerobic tank, secondary sedimentation tank, physicochemical tank and clear water tank are connected in sequence; among them, all the above equipment are equipped with constant temperature devices.

2. The experimental device according to claim 1, characterized in that The water temperature set by the thermostat is consistent with the actual water temperature of the factory sewage treatment system.

3. The experimental device according to claim 1, characterized in that The primary sedimentation tank, the secondary sedimentation tank and the physicochemical tank are connected to the sludge tank, and the connecting pipelines are provided with solenoid valves, wherein the solenoid valves can be set to automatically open and close time according to experimental requirements.

4. The experimental device according to claim 1, characterized in that The regulating tank is provided with a variable frequency lifting pump, which can start high and stop low according to the liquid level in the regulating tank; and the anoxic tank is provided with a high liquid level water stop automatic control device.

5. The experimental device according to claim 4, characterized in that The anoxic pool is provided with a metering pump, which is suitable for adding a carbon source to the anoxic pool and the flow rate and start and stop time of the metering pump can be adjusted according to the test situation.

6. The experimental device according to claim 1, characterized in that The aerobic pool is provided with a micro aeration fan, and a denitrification pump is provided at the end of the aerobic pool. The denitrification pump is suitable for delivering sewage to the front end of the anoxic pool, and the flow rate and start and stop time of the denitrification pump can be adjusted according to the test situation.

7. The experimental device according to claim 1, characterized in that The primary sedimentation tank is provided with a first reflux pump, which is suitable for transporting the sludge in the primary sedimentation tank to the hydrolysis tank.

8. The experimental device according to claim 1, characterized in that The secondary sedimentation tank is provided with a second reflux pump, and the second reflux pump is suitable for conveying the sludge in the secondary sedimentation tank to the front end of the anoxic tank.

9. The experimental device according to claim 1, characterized in that The physicochemical tank is provided with a dosing pump, and the flow rate and start and stop time of the dosing pump can be adjusted according to the test conditions.

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