Microorganism capturing agent culture tank with heating function

Abstract

The utility model relates to a kind of microbial trapping agent culture pond with heating function, including pool body, six groups of electric heating tube, PID temperature control system;Six groups of electric heating tube product character type distribution is in pool body bottom, and the power of each group electric heating tube is 50-20kW adjustable;PID temperature control system includes temperature sensor, controller and variable frequency driver, temperature sensor is embedded in pool body side wall, real-time feedback water temperature to controller, and controller adjusts the power of each group electric heating tube by variable frequency driver;Pool body lining is 316L stainless steel layer, and outer wall is coated fluorine Long coating layer.The utility model's microbial trapping agent culture pond temperature control range 20-40 ℃, and the trapping agent microbial flora cell used is cultivated using the organic sewage such as nutrient-rich domestic sewage, is introduced into the sewage to be handled subsequently after suitable temperature cultivation to handle organic matter and ion.The utility model uses the abundant nutrient substance in domestic sewage and other organic sewage to cultivate trapping agent microbial cell, reaches waste utilization, reduces processing cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of sewage treatment equipment and relates to a microbial capture agent culture tank with heating function. Background Technology

[0002] Carbon emissions are the processes or activities that release greenhouse gases or greenhouse gas precursors into the atmosphere, and can be divided into two pathways: direct emissions and indirect emissions. Direct carbon emissions refer to CO2, CH4, and N2O emitted during sludge treatment and disposal. CO2 emissions caused by various biological activities are biogenic carbon emissions, which are the release of CO2 already present in the atmosphere back into the atmosphere through cycling processes, such as CO2 generated from sludge aerobic and anaerobic digestion and CO2 generated from sludge incineration. Indirect carbon emissions mainly include carbon emissions caused by the consumption of electricity, natural gas, and chemical agents during sludge treatment and disposal.

[0003] Existing wastewater treatment processes consume a significant amount of energy and generate substantial indirect carbon emissions. Therefore, developing new technologies for the treatment and reuse of organic wastewater that can achieve carbon reduction is of great economic and environmental value to my country's water resources protection.

[0004] Since the beginning of the last century, biological treatment technology has been the main technology for wastewater treatment, originating from the discovery of activated sludge in 1913. Through continuous improvement, various biological wastewater treatment processes based on activated sludge have been developed, such as anaerobic activated sludge treatment technology and aerobic activated sludge treatment technology. The main principle is that aerobic or anaerobic microorganisms and protozoa in the sludge digest and degrade organic matter in the wastewater, with most of it forming CO2 or biogas, and a small portion of organic and inorganic matter being transformed into cells. The emergence of activated sludge treatment technology has played a very positive role in promoting the development of wastewater treatment technology. However, with the widespread application of this technology, its shortcomings have also become apparent. The main problems are: 1. In the process of treating organic wastewater, activated sludge technology, which is mainly based on microorganisms, degrades the organic matter in the wastewater and releases CO2, failing to recover and utilize this organic matter. This consumes a large amount of energy and loses valuable organic resources, essentially increasing "wasteful" carbon emissions, which does not conform to current global energy conservation and emission reduction requirements. 2. In the advanced treatment of wastewater rich in organic matter, such as domestic sewage, activated sludge not only degrades valuable organic matter in the wastewater but also, due to the self-proliferation of microbial cells, transforms into a large amount of excess sludge with low fertilization efficiency and difficulty in recycling. 3. When treating organic wastewater, because it relies primarily on microbial degradation of organic matter, easily soluble but difficult-to-degrade small-molecule organic matter and new nitrogen-containing compounds are generated in the effluent, often making it difficult to meet COD standards. 4. During the operation of wastewater treatment plants, a large amount of kinetic energy is consumed, resulting in high indirect carbon emissions. Therefore, it is necessary to change the activated sludge treatment technology used for treating organic-rich wastewater such as urban domestic sewage, fermentation wastewater, and slaughterhouse wastewater.

[0005] Wastewater treatment technologies are mainly classified into physical treatment technologies, chemical treatment technologies, and biological treatment technologies based on their treatment methods. Physical treatment technologies primarily rely on the physical properties of pollutants in wastewater for physical treatment. Examples include sedimentation to remove solids, optical methods to treat photosensitive pollutants, and the addition of adsorbents to treat water-soluble pollutants. Chemical treatment technologies are wastewater treatment methods developed based on the chemical properties of pollutants. Pollutants react with added chemicals through precipitation or decomposition reactions, effectively removing some pollutants from the wastewater. Physical and chemical methods are very effective for treating single-polluting wastewater, and the treatment processes are relatively simple and mature. However, for complex polluting wastewater, physical and chemical treatment technologies are ineffective and need to be used in conjunction with other related technologies.

[0006] Capture agents, also known as super biosorbents, are microbial cells that have undergone targeted selection and ultraviolet-induced mutagenesis. They can efficiently adsorb organic matter and ions in wastewater, possessing and surpassing the performance of general adsorbents or flocculants. CN2012102913392 Bacillus subtilis ZN0871v11 is a mutant strain of this developed capture agent. It can directly treat raw wastewater from dyeing and printing industries, efficiently adsorbing or even completely capturing organic molecules and ions within 5-10 minutes, reducing COD and ion concentrations to acceptable levels. The capture agent cells that have captured organic matter and ions can be regenerated using six regeneration eluents within 3-30 minutes, exhibiting high regeneration efficiency, low cost, and no pollution. Through regeneration, the capture agent can be repeatedly recycled. The eluted soluble pollutants are also easily reused; for example, high-value pollutants can be recycled, while others can be used for composting, biogas fermentation, etc.

[0007] The main principle of wastewater treatment technology using capture agents is as follows: Through screening or mutagenesis, the number of charged and hydrophilic groups on the cell wall of Bacillus subtilis ZN0871v11 increases. In a weakly acidic solution, the cells carry a positive charge, and the positively and negatively charged groups and hydrophilic groups on the cell surface can interact with oppositely charged ions or polar molecules in the aqueous solution through electrostatic attraction and hydrophilic interactions, adsorbing anions and cations in the solution onto the cell surface. After these ions or groups are adsorbed onto the surface, they continue to interact through residual charge or polarity with opposite charges, forming an interactive attraction chain between positive and negative charges, resulting in layer-by-layer accumulation. This leads to a decrease in the number or intensity of free ions in the wastewater, a gradual decrease in the charge on the cell surface, and an increase in the size and aggregation of cell particles, thus forming co-sedimentation. Furthermore, the dense network of peptidoglycan in the cell wall and the small size of the cell particles themselves enhance the overall adsorption effect, accelerating the co-sedimentation rate. In the presence of certain ions, especially Cu... 2+ Fe 2+ and Cl - The presence of these substances can accelerate the electrostatic attraction and co-sedimentation process, rather than inhibit adsorption or repulsion.

[0008] In addition to the Bacillus subtilis ZN0871v11 mutant strain, multiple microbial cell lines, including more than 10 species of bacteria and actinomycetes, have been developed to act as capture agents under neutral and alkaline conditions, forming a combined group to adapt to different water quality treatment environments. Although wastewater treatment technology using super biosorbents is also a type of biological treatment technology, it has significant advantages compared to activated sludge treatment. It captures organic matter quickly, requires simple equipment and operating conditions, has no special requirements for equipment or the operating environment, and the used capture agent can be recycled with a small amount of eluent, significantly reducing costs. It boasts advantages such as high adsorption efficiency, rapid treatment, short and simple process flow, easy regeneration, high recovery efficiency, wide applicability, and reduced carbon emissions due to organic matter recovery. It overcomes the shortcomings and difficulties of existing wastewater treatment processes and represents the current development direction for new wastewater treatment technologies to achieve carbon emission reduction. This study utilizes a combination of microbial cells to form a capture agent for treating organic wastewater such as municipal sewage, antibiotic fermentation industrial wastewater, and slaughterhouse wastewater. This type of wastewater is extremely complex in composition, highly variable, and has high COD. Traditional microbial degradation methods would result in wasteful carbon emissions. While activated sludge microorganisms can also adsorb organic matter, their performance is relatively low. Although activated sludge is sometimes reused to adsorb organic matter from wastewater, the microbial communities in the sludge have not been selectively bred and are not in their optimal logarithmic growth phase, leading to low adsorption efficiency. Summary of the Invention

[0009] The purpose of this invention is to treat organic wastewater such as domestic sewage with complex organic composition, improve its practicality and adaptability, and enable a combination of multiple microbial cells to better treat organic wastewater such as urban domestic sewage, antibiotic fermentation industrial wastewater, and slaughterhouse wastewater. This invention provides a microbial capture agent culture tank with heating function.

[0010] The technical solution of this utility model is as follows:

[0011] A microbial capture agent culture tank with heating function, the tank body is equipped with a water inlet pipe with a valve and a water outlet pipe with a valve, characterized in that it includes a tank body, six sets of electric heating tubes, a stirrer and a PID temperature control system;

[0012] The six sets of electric heating tubes are arranged in a triangular pattern at the bottom of the tank to follow the circulation of the stirring, facilitate heat transfer, and reduce mutual interference. The power of each set of electric heating tubes is adjustable from 50 to 20 kW.

[0013] The PID temperature control system includes a temperature sensor, a controller, and a frequency converter. The temperature sensor is embedded in the side wall of the pool and feeds back the water temperature to the controller in real time. The controller adjusts the power of each group of electric heating tubes through the frequency converter.

[0014] A stirrer with a power of 0.55-50kw is installed in the center of the pool. The main shaft of the stirrer's propeller is at an angle of 30-60° to the ground. This angle can reduce the liquid resistance during stirring and increase dissolved oxygen.

[0015] The pool is lined with 316L stainless steel and the outer wall is coated with fluoropolymer.

[0016] The spacing between adjacent electric heating elements is 150mm, arranged in a matrix, and each group of electric heating elements is equipped with an independent overcurrent protection module.

[0017] The temperature control accuracy of the PID temperature control system is ±1℃, and the response time is ≤5 seconds.

[0018] The top cover of the pool is equipped with a fog-proof glass observation window, and the side walls have maintenance doors.

[0019] The pool is square or circular in shape.

[0020] This invention features a microbial capture agent culture tank with a temperature control range of 20-40℃. It utilizes nutrient-rich organic wastewater, such as domestic sewage, to cultivate the capture agent microbial community cells. After cultivation at a suitable temperature, these cells are introduced into the wastewater to be treated to remove organic matter and ions. This invention leverages the abundant nutrients in organic wastewater, such as domestic sewage, to cultivate the capture agent microbial cells, achieving waste utilization and reducing treatment costs.

[0021] By cultivating the selected group of capture agents in the culture tank of this utility model, the raw sewage can be directly treated. It can directly capture some or all of the organic matter, purify the sewage, eliminate or reduce carbon emissions of "empty consumption", save energy, achieve energy conservation and emission reduction, and contribute to the achievement of dual carbon goals. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of another embodiment of the present invention. Detailed Implementation

[0024] The present invention will be further described with reference to the accompanying drawings.

[0025] like Figure 1 , Figure 2As shown, a microbial capture agent culture tank with heating function is provided. The tank body 1 is equipped with a water inlet pipe 12 with a valve and a water outlet pipe 13 with a valve. The tank body 1 includes a tank body 1, six sets of electric heating tubes 2, a stirrer 14, and a PID temperature control system 3. The six sets of electric heating tubes 2 are distributed in a triangular pattern at the bottom of the tank body 1 to follow the circulation of the stirrer, facilitate heat transfer, and reduce mutual interference. The power of each set of electric heating tubes 2 is adjustable from 50-20kW. The PID temperature control system 3 includes a temperature sensor 4, a controller 5, and a frequency converter 6. The temperature sensor 4 is embedded in the side wall of the tank body 1 and provides real-time feedback of the water temperature to the controller 5. The controller 5... A variable frequency drive 6 adjusts the power of each group of electric heating tubes 2; a stirrer 14 with a power of 0.55-50kw is installed in the center of the tank body 1 via two mounting columns 15. The propeller shaft of the stirrer 14 forms a 30-60° angle with the ground. The stirrer 14 is used to mix the liquid, transfer heat, and accelerate the growth and reproduction of microorganisms. The resistance encountered by the stirrer at a 30-60° angle is less than that of a vertically installed propeller, and it can also increase dissolved oxygen; the inner lining of the tank body 1 is a 316L stainless steel layer 7, and the outer wall is coated with a fluoropolymer coating 8; the spacing between adjacent electric heating tubes 2 is 150mm, arranged in a matrix, and each group of electric heating tubes 2 is equipped with an independent overcurrent protection module 9. The temperature control accuracy of the PID temperature control system 3 is ±1℃, and the response time is ≤5 seconds. The top cover 16 of the tank body 1 is equipped with an anti-fog glass observation window 10, and the side wall has an inspection door 11. The shape of the tank body 1 is square. Figure 1 As shown, it can also be circular, such as... Figure 2 As shown.

[0026] The design parameters for the microbial capture agent culture tank of this utility model are as follows:

[0027] Design water volume: 5-5000m³ 3 / d

[0028] Duration of stay: HRT = 4.0h - 30h

[0029] Dimensions: L×B×H=3.80-10×2.00-10×2.50m

[0030] This invention features a microbial capture agent culture tank with a temperature control range of 20-40℃. It utilizes nutrient-rich organic wastewater, such as domestic sewage, to cultivate the capture agent microbial community cells. After cultivation at a suitable temperature, these cells are introduced into the wastewater to be treated to remove organic matter and ions. This invention leverages the abundant nutrients in organic wastewater, such as domestic sewage, to cultivate the capture agent microbial cells, achieving waste utilization and reducing treatment costs.

Claims

1. A microbial capture agent culture tank with heating function, wherein the tank body (1) is provided with an inlet pipe (12) with a valve and an outlet pipe (13) with a valve, characterized in that, Includes a tank body (1), six sets of electric heating tubes (2), and a stirrer PID temperature control system (3); The six sets of electric heating tubes (2) are arranged in a triangular pattern at the bottom of the pool body (1), and the power of each set of electric heating tubes (2) is adjustable from 50 to 20 kW; The PID temperature control system (3) includes a temperature sensor (4), a controller (5) and a frequency converter (6). The temperature sensor (4) is embedded in the side wall of the pool body (1) and feeds back the water temperature to the controller (5) in real time. The controller (5) adjusts the power of each group of electric heating tubes (2) through the frequency converter (6). A stirrer (14) with a power of 0.55-50kw is installed in the center of the pool (1). The main shaft of the stirrer (14) is at an angle of 30-60° to the ground. The inner lining of the pool body (1) is made of 316L stainless steel (7), and the outer wall is coated with fluoropolymer coating (8).

2. The microbial capture agent culture tank with heating function according to claim 1, characterized in that, The spacing between adjacent electric heating tubes (2) is 150mm, arranged in a matrix, and each group of electric heating tubes (2) is equipped with an independent overcurrent protection module (9).

3. The microbial capture agent culture tank with heating function according to claim 1, characterized in that, The temperature control accuracy of the PID temperature control system (3) is ±1℃, and the response time is ≤5 seconds.

4. The microbial capture agent culture tank with heating function according to claim 1, characterized in that, The top cover (16) of the pool body (1) is equipped with a fog-proof glass observation window (10), and an inspection door (11) is opened on the side wall.

5. The microbial capture agent culture tank with heating function according to claim 1, characterized in that, The shape of the pool (1) is square or circular.

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