High-temperature energy-saving microbial carbon eliminating device

Abstract

The utility model relates to a high-temperature energy-saving microbial carbon elimination device which comprises a tank body, a tank bottom water distribution system, a tank top overflow weir drainage system and a biogas filtering cleaner, and is characterized in that the lower part of the tank body is provided with the tank bottom water distribution system, and the upper part of the tank body is provided with a three-phase separator; a tank top overflow weir drainage system is arranged at the position, located above the three-phase separator, in the tank body 1, a biogas filtering cleaner is installed outside the top of the tank body, and a heat exchange device is installed in the tank body and located between the three-phase separator and the tank bottom water distribution system. The heat exchange device is composed of heat exchange pipe sets, a water inlet pipe, connecting pipes, a water outlet pipe and control valves, the adjacent heat exchange pipe sets are communicated through the connecting pipes, water inlets of the heat exchange pipe sets are connected with the water inlet pipe, water outlets of the heat exchange pipe sets are connected with the water outlet pipe, and the water inlet pipe and the water outlet pipe are provided with the control valves. The temperature of the sewage can be effectively reduced, and the normal operation of an aerobic system is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to a high-temperature energy-saving microbial carbon remover. Background Art

[0002] Biological treatment of wastewater refers to the process of decomposing various complex organic substances in wastewater into substances such as methane and carbon dioxide through the action of anaerobic microorganisms (including facultative anaerobic microorganisms) under the condition of molecular oxygen. It is an important technology in environmental engineering and energy engineering. Since the 1970s, the world's energy shortage has become increasingly prominent, and wastewater anaerobic technology that can produce energy has received attention. Research and practice have been continuously deepened, and various new processes and equipment have been developed, which have greatly increased the holding capacity of activated sludge in anaerobic reactors, greatly shortened the treatment time, and improved efficiency. The more popular anaerobic processors now include UASB and EGSB reactors. The UASB (upflow anaerobic sludge bed) reactor includes water inlet and distribution system, reactor tank body and three-phase separator; the EGSB (expanded granular sludge bed) reactor is an improvement on the UASB reactor. In addition to the reactor body, the EGSB reactor is mainly composed of a water distribution system, a reaction zone, a three-phase separator, a sedimentation zone, an effluent system and an effluent circulation system.

[0003] The Chinese utility model with patent number CN202808477U discloses an energy-saving multi-effect anaerobic treatment reactor, including an anaerobic tank body, a water distribution pipeline and a sludge pipeline are arranged at the lower part of the tank body, a three-phase separator is arranged at the upper part of the tank body, a reaction zone is arranged between the three-phase separator and the water distribution pipeline and the sludge pipeline, the surrounding space of the three-phase separator is a gas collecting chamber, a water outlet device is arranged above the three-phase separator, a drain pipe is arranged at a vertical position along the outside of the tank body, a biogas filter cleaner is arranged outside the top of the tank body, and the biogas filter cleaner is provided with a gas transmission pipe and connected to the gas collecting chamber. The utility model has good mass transfer effect, high organic matter removal rate, can operate under higher influent concentration and higher volume load, ensures full contact between granular sludge and wastewater, optimizes the gas, liquid and solid separation effect, and effectively utilizes resources.

[0004] However, in the process of treating wastewater with the above technology, since the temperature of the wastewater is around 65-70°C, the high temperature of the wastewater will slow down the biodegradation reaction rate and may cause some microorganisms to be inactivated or die, thereby affecting the efficiency of sewage treatment. Therefore, it is necessary to design a high-temperature energy-saving microbial carbon remover to solve the above problems. Utility Model Content

[0005] In view of the above technical problems, the utility model provides a high-temperature energy-saving microbial carbon remover, including a tank body, a water distribution system at the bottom of the tank, an overflow weir drainage system at the top of the tank and a biogas filter cleaner, characterized in that the lower part of the tank body is provided with a tank bottom water distribution system, the upper part of the tank body is provided with a three-phase separator, the tank body 1 is provided with a tank top overflow weir drainage system at a position above the three-phase separator, a biogas filter cleaner is provided on the outside of the top of the tank body, a heat exchange device is provided in the tank body between the three-phase separator and the water distribution system at the bottom of the tank, the heat exchange device is composed of a heat exchange tube group, a water inlet pipe, a connecting pipe, a water outlet pipe and a control valve, adjacent heat exchange tube groups are connected by a connecting pipe, the water inlet of the heat exchange tube group is connected to the water inlet pipe, the water outlet of the heat exchange tube group is connected to the water outlet pipe, and control valves are provided on both the water inlet pipe and the water outlet pipe.

[0006] The heat exchange tube group is composed of a heat exchange main pipe and a heat exchange branch pipe, and a plurality of heat exchange branch pipes are arranged between the two heat exchange main pipes.

[0007] Beneficial effects of the utility model:

[0008] The utility model has a strong ability to resist hydraulic impact. By utilizing the large volume characteristics of the equipment, it has a high-efficiency hydraulic buffering capacity and can effectively reduce the hydraulic impact load of the subsequent sewage system caused by the grease, temperature, BOD and other load indicators of the sewage.

[0009] The utility model adds a heat exchange device in the tank body to effectively reduce the temperature of the sewage. After the sewage is heat exchanged by the device, the sewage temperature can be reduced to about 40°C, which can ensure the normal operation of the aerobic system and ensure that the sewage station meets the discharge standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall structure of the utility model high-temperature energy-saving microbial carbon remover;

[0011] As shown in the figure: 1. Tank body, 2. Water distribution system at the bottom of the tank, 3. Overflow weir drainage system at the top of the tank, 4. Biogas filter cleaner, 5. Three-phase separator, 61. Heat exchange tube group, 611. Heat exchange main pipe, 612. Heat exchange branch pipe, 62. Water inlet pipe, 63. Water outlet pipe, 64. Control valve, 65. Connecting pipe. DETAILED DESCRIPTION

[0012] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0014] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0015] Example 1

[0016] As shown in the figure, a tank bottom water distribution system 2 is provided at the lower part of the tank body 1, a three-phase separator 5 is provided at the upper part of the tank body 1, a tank top overflow weir drainage system 3 is provided at a position above the three-phase separator 5 in the tank body 1, a biogas filter cleaner 4 is provided outside the top of the tank body 1, and a heat exchange device is provided in the tank body 1 between the three-phase separator 5 and the tank bottom water distribution system 2. The heat exchange device is composed of a heat exchange tube group 61, a water inlet pipe 62, a connecting pipe 65, a water outlet pipe 63 and a control valve 64. Adjacent heat exchange tube groups 61 are connected through the connecting pipe 65. The water inlet of the heat exchange tube group 65 is connected to the water inlet pipe 61, and the water outlet of the heat exchange tube group 61 is connected to the water outlet pipe 63. Control valves 64 are provided on the water inlet pipe 61 and the water outlet pipe 63. The heat exchange tube group 61 is composed of a heat exchange main pipe 611 and a heat exchange branch pipe 612. A plurality of heat exchange branch pipes 612 are provided between the two heat exchange main pipes 611.

[0017] This equipment has a strong ability to resist hydraulic shock. By utilizing the large volume characteristics of this equipment, it has a highly efficient hydraulic buffering capacity and can effectively reduce the hydraulic shock load of the subsequent sewage system caused by the grease, temperature, BOD and other load indicators of the sewage.

[0018] This equipment has a cooling effect, and utilizes the obvious advantage of the large vertical height of the equipment itself. The high vertical height can greatly increase the surface area of ​​the equipment (compared with the pool structure). At the same time, the strong heat conductivity of the metal outer wall of the tank in the equipment can be utilized to effectively dissipate the heat energy outward; and the heat exchange device added by the utility model, the heat exchange tube group circulates water to the heat exchange tube group by opening the control valve, and the heat exchange tube group exchanges heat with the sewage, which can effectively reduce the sewage temperature. The sewage temperature after passing through this equipment can be reduced to about 40°C, which can ensure the normal operation of the aerobic system and ensure that the sewage station meets the discharge standards;

[0019] The utility model still utilizes the technology of anaerobic microorganisms to efficiently remove COD from sewage. Through the internal reflux structure design, the wastewater has a high rising velocity in the reactor, the granular sludge expansion state and the circulating flow state inside the reactor are strengthened, and the carbon source is effectively degraded. In terms of microbiological selection, medium-temperature and high-temperature bidirectional anaerobic bacteria are selected, and environmental heat and carbon sources are used to accelerate the splitting and digestion, ensuring full contact between the bacteria and the wastewater, so that the gas, liquid and solid separation effect is optimal, which can not only remove the carbon source (COD) in the sewage, but also absorb the environmental temperature, and achieve the purpose of cooling the sewage while removing carbon, and the COD removal efficiency can be as high as more than 50%;

[0020] The utility model makes full use of the vertical space of the tank body 1 to achieve a large volume characteristic, can effectively save space, and is particularly suitable for sewage station reconstruction projects;

[0021] The utility model fully utilizes the high temperature characteristics of raw water, that is, the wastewater to be treated, to operate without additional heat source supplementation. Compared with conventional UASB and EGSB, the operation cost is lower.

[0022] The utility model utilizes the mutual consumption and conversion of sludge bacteria species during temperature changes, thereby reducing the amount of residual sludge in the entire sewage station, reducing the amount of sludge discharged externally, and saving operating costs.

[0023] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The various components mentioned in the utility model are common technologies in the existing field. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-temperature energy-saving microbial carbon remover, comprising a tank body, a water distribution system at the bottom of the tank, an overflow weir drainage system at the top of the tank and a biogas filter cleaner, characterized in that: The lower part of the tank body is provided with a tank bottom water distribution system, the upper part of the tank body is provided with a three-phase separator, the tank body (1) is provided with a tank top overflow weir drainage system at a position above the three-phase separator, a biogas filter cleaner is provided outside the top of the tank body, a heat exchange device is provided in the tank body between the three-phase separator and the tank bottom water distribution system, the heat exchange device is composed of a heat exchange tube group, a water inlet pipe, a connecting pipe, a water outlet pipe and a control valve, adjacent heat exchange tube groups are connected by connecting pipes, the water inlet of the heat exchange tube group is connected to the water inlet pipe, the water outlet of the heat exchange tube group is connected to the water outlet pipe, and control valves are provided on both the water inlet pipe and the water outlet pipe.

2. The high temperature energy-saving microbial carbon remover according to claim 1 is characterized in that The heat exchange tube group is composed of a heat exchange main pipe and a heat exchange branch pipe, and a plurality of heat exchange branch pipes are arranged between the two heat exchange main pipes.

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