CN205328691U - Biological evaporation plant of drum -type - Google Patents

Abstract

The utility model relates to a drum type biological evaporation device, which belongs to the technical field of environmental protection equipment. The drum-type biological evaporation device includes a drum main body, a rotating device, a static central shaft device and a PLC control system; The pipe and feed pipe enter the drum body along the static central axis and are respectively arranged along the bottom and top of the drum body. The exhaust pipe discharges the gas from the inside of the drum body and is connected to the gas analyzer. The temperature sensor probe of the temperature sensor is set on the static central axis. Middle section: In the PLC control system, the air flow is controlled by the solenoid valve Ⅰ, the feed volume is controlled by the solenoid valve Ⅱ, the gas discharge is controlled by the solenoid valve Ⅲ, and the real-time temperature is displayed on the on-site touch screen of the PLC automatic control system. The utility model provides an automatic continuous operation device with continuous feeding at the top, uniform aeration at the bottom, and a thermal insulation layer.

Description

A drum type biological evaporation device

technical field

The utility model relates to a drum type biological evaporation device, which belongs to the technical field of environmental protection equipment.

Background technique

Water pollution is one of the major environmental problems facing our country. According to statistics, industrial wastewater accounts for more than 70% of the total sewage volume, and the vast majority of industrial wastewater is high-concentration organic wastewater. High-concentration organic wastewater mainly comes from industries such as organic chemical industry, pharmaceuticals, printing and dyeing, papermaking, coking, slaughtering, and landfill. , the COD of these waste water is higher than 40,000mg/L, and the COD of food waste is as high as 220,000mg/L. Due to the serious pollution of high-concentration organic wastewater to the water environment and the difficulty of treatment, the research on its treatment technology has always been the focus of water treatment technology research.

For the treatment of high-concentration organic wastewater, the international invention patent with the application number PCT/KR2014/003527 in 2013 proposed a biological evaporation treatment technology, which was developed from aerobic composting and biological drying technology. The metabolic heat generated in aerobic metabolism is the heat source for evaporating water in high-concentration organic wastewater. Organic matter serves as the substrate for microbial metabolism. As the concentration of organic matter increases, the metabolic heat of microorganisms also increases. Metabolic heat continues to accumulate to form high temperature and affect the wastewater. The moisture in the reactor is vaporized, and the vaporized water vapor is taken out of the reactor body by the ventilation airflow to achieve the removal effect.

Biological evaporation technology belongs to the category of water treatment. Compared with traditional evaporation technology, this technology can not only achieve water evaporation and removal, but also degrade and reduce pollutants in wastewater. The treatment process does not require pretreatment, no secondary pollutants, and the treatment The cost is small, only the energy consumption of aerating the reactor body. Among the high-concentration organic wastewater treatment technologies, biological evaporation technology is economical, energy-saving, and environmentally friendly, and it is a revolutionary breakthrough in the treatment of high-concentration organic wastewater.

Biovaporization is an emerging technology with promotional value and development potential. At present, bioevaporation technology is in the stage of experimental research and development, and the research process is all batch experiments or batch fed experiments. In the process of biological evaporation, at the initial stage, due to the sufficient organic matter in the pile, the growth of various populations of microorganisms is stimulated, so the total number of microorganisms increases step by step, and the metabolic heat of heat production also increases and accumulates. As the temperature rises, the biochemical The reaction rate and growth rate are accelerated, but beyond a certain range, the important components of the body, such as proteins, nucleic acids and other temperature-sensitive substances, will suffer irreversible damage as the temperature rises, resulting in the death of the body. Maintain high cell activity at a tolerable temperature for biovaporization. From the initial heating stage to the high temperature stage, the microbial community structure changed from low- and medium-temperature flora to be dominated by medium- and high-temperature flora, and the degradation of organic matter in the pile decreased, resulting in a decrease in metabolic heat production, so that biological Evaporation enters the cooling stage. When the temperature drops, the number of medium and high temperature bacteria decreases again, and the microbial community structure is dominated by low and medium temperature bacteria again. One-time feeding or intermittent feeding causes the whole biological evaporation process to have a warming stage, a high temperature stage and a cooling stage. Only in the high temperature stage, the biochemical reaction rate and growth rate of the cells are the fastest, and the metabolic heat generated is the most, which is most conducive to water evaporation and cooling. Pollutants are degraded, while the activity of mesophilic and thermophilic microorganisms is not high in the heating and cooling stages, and the organic loads of bio-evaporation expansion agents and biological carriers are low. The inconsistent biological activities of the three stages lead to relatively low overall organic loads of bio-evaporation.

In addition, the reactor used in the batch experiment or batch feeding experiment is a static square airtight device, and the position of the reactor body in the reactor is relatively fixed, and the pile body is easily compacted by its own gravity, which reduces the porosity and affects the aeration effect , resulting in extremely uneven temperature, moisture and oxygen concentrations in the reactor, restricting microbial aerobic fermentation and water evaporation. At present, the bioevaporation process is continuous and constant aeration, and the oxygen consumption is positively correlated with the temperature of the pile and the microbial activity. The constant aeration cannot match the ventilation required for the three different stages of cell activity, and the excess ventilation will be taken away during the process. Metabolic heat in the pile lowers the temperature of the pile, while insufficient aeration makes the pile partially in an anaerobic state, which is not conducive to aerobic fermentation heat production and affects water evaporation. These factors affect microbial aerobic metabolism, metabolic heat accumulation and water removal to a certain extent, and ultimately lead to low efficiency of bioevaporation treatment.

Due to the above defects and deficiencies, it is impossible to make a breakthrough in the basic research of bio-evaporation technology, which further restricts the practical application and promotion of bio-evaporation technology. Therefore, bioevaporation technology urgently needs an effective reaction device and a method to improve processing efficiency, so as to realize the breakthrough of bioevaporation technology in basic research and practical application.

Contents of the invention

The purpose of the utility model is to overcome the defects and deficiencies of uneven aeration, inability to automate continuous operation, low processing efficiency, and poor heat preservation effect in the current biological evaporation technology, and provide a continuous feed at the top, uniform aeration at the bottom, with The automatic and continuous operation of the drum-type biological evaporation device for the thermal insulation layer, the utility model is realized through the following technical solutions.

A drum-type biological evaporation device, comprising a drum main body 1, a rotating device, a static central shaft device and a PLC control system;

The rotating device includes a frame 4, a motor 5, a driving gear 6 and a driven gear 7, and the static center shaft device includes a static center shaft 2, a ventilation pipe 10, a feed pipe 11, an exhaust pipe 12 and a temperature sensor 13, PLC The control system includes PLC automatic control system 3, PLC automatic control system on-site touch screen 21, gas analyzer 15, flow meter and solenoid valve;

The two ends of frame 4 in the described rotating device link to each other with static central axis 2 by triangular bracket 8 and frame 4 one end fits with the outer cylindrical surface of drum main body 1 by two rollers 9; Described motor 5 and driving gear 6 both It is arranged on the frame 4 and the motor shaft of the motor 5 is connected to the driving gear 6 in transmission, and the driven gear 7 meshing with the driving gear 6 is arranged on the drum main body 1 in the circumferential direction corresponding to the driving gear 6;

The ventilation pipe 10, feed pipe 11, exhaust pipe 12 and temperature sensor 13 in the static central axis device are all arranged in the static central axis 2; the ventilation pipe 10 and the feed pipe 11 enter the drum main body 1 along the static central axis 2 Finally, they are respectively arranged along the bottom and top of the drum main body 1. The upper part of the feeding pipe 11 located inside the drum main body 1 is the cloth pipe 17, and the bottom of the ventilation pipe 10 located inside the drum main body 1 is the aeration pipe 20; the exhaust pipe 12 The inlet 14 is arranged in the middle section of the top of the drum body 1 and is arranged along the static central axis 2 to discharge the drum body 1. The exhaust pipe 12 of the drum body 1 is connected with the gas analyzer 15 in the PLC control system, and the temperature sensor probe 16 of the temperature sensor 13 is arranged on the Middle section of static central axis 2;

In the PLC control system, the on-site touch screen 21 of the PLC automatic control system is connected to the PLC automatic control system 3, the ventilation pipe 10 is connected to the air outlet of the air compressor through the flowmeter I18 and the solenoid valve I19, and the feed pipe 11 is passed through the flowmeter II26 and The solenoid valve Ⅱ27 is connected to the outlet of the material-liquid conveyor, the gas analyzer 15 is connected to the exhaust pipe 12 through the flow meter Ⅲ28 and the solenoid valve Ⅲ29, the solenoid valve Ⅰ19, the solenoid valve Ⅱ27, the solenoid valve Ⅲ29, the gas analyzer 15, the temperature sensor 13 and the PLC The automatic control system 3 is connected.

The outside of the drum main body 1 is made of galvanized steel, and the inside is made of polyethylene plastic.

The inner wall of the drum main body 1 is provided with a baffle 22 .

The outer surface of the drum main body 1 is provided with a discharge port 23 and a sampling port 24 .

Four corners of the base of the tripod 8 are provided with universal wheels 25 for easy movement.

The ventilation pipe 10 is an aeration pipe 20 at the bottom of the drum main body 1 .

The control of the on-site touch screen 21 of the above-mentioned PLC automatic control system includes: displaying the temperature curve and real-time temperature of the pile in the drum main body 1; displaying the real-time concentrations of oxygen, carbon dioxide, ammonia, hydrogen sulfide, and methane in the drum main body 1 .

The control process of the above-mentioned PLC automatic control system 3: according to the real-time concentration of oxygen in the drum main body 1, the ventilation rate is set through the solenoid valve I19; according to the real-time temperature in the drum 1, the feeding amount is set through the solenoid valve II27.

The use method of the drum type biological evaporation device is as follows:

When bio-evaporation starts, open the discharge port 23 and add bio-evaporation expansion agent and bio-carrier, add high-concentration organic wastewater raw material liquid through the feed pipe 11, turn on the motor 5 and drive the driven gear 7 through the driving gear 6, so that the main body of the drum 1 The rotation speed is 1-100 min/r. When the expansion agent and biological carrier are fully mixed with the high-concentration organic wastewater raw material solution, air is introduced through the ventilation pipe 10, and then the pile is evenly aerated through the aeration pipe 20;

During the bioevaporation process, the drum body 1 is controlled to rotate stably, and the tail gas produced by bioevaporation is discharged from the drum body 1 through the exhaust inlet 14 through the exhaust pipe 12, and then part of the tail gas is dehumidified and then passed into the gas analyzer 15. The gas analyzer 15 Measure the real-time concentration of oxygen and carbon dioxide in the drum body 1 and feed it back to the gas mode of the PLC automatic control system 3, the gas mode of the PLC automatic control system 3 controls the solenoid valve I19, and adjusts the ventilation of the ventilation pipe 10 through the solenoid valve I19 To avoid local anaerobic state in the pile with too little ventilation and take away heat with too much ventilation. The gas mode of the PLC automatic control system 3 also controls the exhaust volume of the exhaust pipe 14, and controls the exhaust volume, aeration volume, and tail gas production balance by controlling the solenoid valve III 29; Feedback to the temperature mode of the PLC automatic control system 3, the temperature mode of the PLC automatic control system 3 controls the solenoid valve II27, adjusts the feeding amount of the feed pipe 11 through the solenoid valve II27, controls the organic load of the biological evaporation, and makes the biological evaporation process continuously at Carry out under the state of highest microbial activity;

With the continuous operation of the bio-evaporation process, the bio-evaporation expansion agent and the bio-carrier will age accordingly, and the efficiency of the bio-evaporation treatment will decrease. At this time, the solenoid valve Ⅰ19 and solenoid valve Ⅱ27 are closed, the motor 5 is turned off to stop the rotation of the drum main body 1, and the discharge is opened. Port 23 takes the expansion agent and biological carrier out of the drum main body 1, replaces the new biological evaporation expansion agent and biological carrier, and then performs the bioevaporation process.

The beneficial effects of the utility model are: the device realizes the automatic operation of the biological evaporation process, optimizes the biological evaporation process to the greatest extent, controls the feeding amount and the continuous feeding method to ensure that the microorganisms in the pile continue to maintain the highest activity under the optimal organic load, and avoid biological There are heating up phases and cooling down phases in the evaporation process, so that the operation process continues in the high temperature phase, which improves the degradation rate of microbial aerobic fermentation and shortens the residence time of high-concentration organic wastewater. At the same time, it is combined with appropriate ventilation, which is economical and energy-saving, and ensures that the air is matched. The amount of ventilation required for the stack. During the operation of the device, the heap is aerated from the bottom of the drum through the aeration tube, and the gas passes through the whole heap from bottom to top to make the whole heap aerated evenly; Continuously add high-concentration organic wastewater in real time to control the microorganisms in the pile to be in the best active state, and the exhaust gas is discharged through the gas analyzer, and then the aeration rate is controlled in real time to the optimal value according to the concentration of oxygen and carbon dioxide; the inner wall of the drum is equipped with a baffle , During the rotation of the drum, the baffle drives the reactor body to rotate, so that the reactor body is fully mixed with the dosing solution; the outside of the drum of the biological evaporation device is made of galvanized steel plate, and the inside is made of polyethylene plastic, which has a good heat preservation effect. The above conditions make the biological evaporation operate in the best state, which can maximize the treatment efficiency.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the rotating device and the static central axis device of the utility model;

Fig. 3 is a structural representation of the utility model PLC control system;

Fig. 4 is a schematic diagram of the structure of the main body of the drum of the utility model;

Fig. 5 is a schematic diagram of a partial cross-sectional structure of the baffle plate of the main body of the drum of the utility model.

In the figure: 1-drum main body, 2-static center shaft, 3-PLC automatic control system, 4-frame, 5-motor, 6-driving gear, 7-driven gear, 8-triangular bracket, 9-roller, 10-ventilation pipe, 11-feed pipe, 12-exhaust pipe, 13-temperature sensor, 14-exhaust inlet, 15-gas analyzer, 16-temperature sensor probe, 17-distributing pipe, 18-flow meter Ⅰ , 19-solenoid valve Ⅰ, 20-aeration pipe, 21-PLC automatic control system on-site touch screen, 22-baffle, 23-discharge port, 24 sampling port, 25-universal wheel, 26-flow meter Ⅱ , 27-solenoid valve Ⅱ, 28-flow meter Ⅲ, 29-solenoid valve Ⅲ.

detailed description

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described further.

Example 1

As shown in Figures 1 to 5, the drum-type biological evaporation device includes a drum main body 1, a rotating device, a static central axis device and a PLC control system;

The rotating device includes a frame 4, a motor 5, a driving gear 6 and a driven gear 7, and the static center shaft device includes a static center shaft 2, a ventilation pipe 10, a feed pipe 11, an exhaust pipe 12 and a temperature sensor 13, PLC The control system includes PLC automatic control system 3, PLC automatic control system on-site touch screen 21, gas analyzer 15, flow meter and solenoid valve;

The two ends of frame 4 in the described rotating device link to each other with static central axis 2 by triangular bracket 8 and frame 4 one end fits with the outer cylindrical surface of drum main body 1 by two rollers 9; Described motor 5 and driving gear 6 both It is arranged on the frame 4 and the motor shaft of the motor 5 is connected to the driving gear 6 in transmission, and the driven gear 7 meshing with the driving gear 6 is arranged on the drum main body 1 in the circumferential direction corresponding to the driving gear 6;

The ventilation pipe 10, feed pipe 11, exhaust pipe 12 and temperature sensor 13 in the static central axis device are all arranged in the static central axis 2; the ventilation pipe 10 and the feed pipe 11 enter the drum main body 1 along the static central axis 2 Finally, they are respectively arranged along the bottom and top of the drum main body 1. The upper part of the feeding pipe 11 located inside the drum main body 1 is the cloth pipe 17, and the bottom of the ventilation pipe 10 located inside the drum main body 1 is the aeration pipe 20; the exhaust pipe 12 The inlet 14 is arranged in the middle section of the top of the drum body 1 and is arranged along the static central axis 2 to discharge the drum body 1. The exhaust pipe 12 of the drum body 1 is connected with the gas analyzer 15 in the PLC control system, and the temperature sensor probe 16 of the temperature sensor 13 is arranged on the Middle section of static central axis 2;

In the PLC control system, the on-site touch screen 21 of the PLC automatic control system is connected to the PLC automatic control system 3, the ventilation pipe 10 is connected to the air outlet of the air compressor through the flowmeter I18 and the solenoid valve I19, and the feed pipe 11 is passed through the flowmeter II26 and The solenoid valve Ⅱ27 is connected to the outlet of the material-liquid conveyor, the gas analyzer 15 is connected to the exhaust pipe 12 through the flow meter Ⅲ28 and the solenoid valve Ⅲ29, the solenoid valve Ⅰ19, the solenoid valve Ⅱ27, the solenoid valve Ⅲ29, the gas analyzer 15, the temperature sensor 13 and the PLC The automatic control system 3 is connected.

Wherein drum main body 1 outside is galvanized steel plate, and inside is polyethylene plastics; One corner is provided with the universal wheel 25 that is convenient to move;

The specific implementation of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned implementation. Various changes are made.

Claims (6)

1. A drum-type biological evaporation device, characterized in that: it includes a drum main body (1), a rotating device, a static central axis device and a PLC control system; The rotating device includes a frame (4), a motor (5), a driving gear (6) and a driven gear (7), and the static central shaft device includes a static central shaft (2), a ventilation pipe (10), a feeding pipe (11), exhaust pipe (12) and temperature sensor (13), PLC control system includes PLC automatic control system (3), PLC automatic control system on-site touch screen (21), gas analyzer (15), flow meter and solenoid valves; The two ends of the frame (4) in the rotating device are connected to the static central axis (2) through the triangle bracket (8), and one end of the frame (4) is connected to the outer cylindrical surface of the drum main body (1) through two rollers (9). fit; the motor (5) and driving gear (6) are all arranged on the frame (4) and the motor shaft of the motor (5) is connected to the driving gear (6), and the main body of the drum (1) is connected with the driving gear (6) A driven gear (7) meshing with the driving gear (6) is arranged in the corresponding circumferential direction; The ventilation pipe (10), feeding pipe (11), exhaust pipe (12) and temperature sensor (13) in the static central axis device are all arranged in the static central axis (2); the ventilation pipe (10) and the inlet The feed pipe (11) enters the drum main body (1) along the static central axis (2) and is arranged along the bottom and top of the drum main body (1) respectively. The upper part of the feed pipe (11) located inside the drum main body (1) is the distribution pipe ( 17), the bottom of the ventilation pipe (10) located inside the drum main body (1) is the aeration pipe (20); the exhaust inlet (14) of the exhaust pipe (12) is set at the top middle section of the drum main body (1) and along the static The central axis (2) is arranged to discharge the drum main body (1), the exhaust pipe (12) of the drum main body (1) is connected to the gas analyzer (15) in the PLC control system, and the temperature sensor probe (16) of the temperature sensor (13) Set in the middle section of the static central axis (2); In the PLC control system, the on-site touch screen (21) of the PLC automatic control system is connected to the PLC automatic control system (3), and the ventilation pipe (10) is connected to the air compressor through the flow meter I (18) and the solenoid valve I (19). The gas outlet, the feed pipe (11) is connected to the outlet of the feed liquid conveyor through the flow meter II (26) and the solenoid valve II (27), and the gas analyzer (15) passes through the flow meter III (28) and the solenoid valve III (29) Connect exhaust pipe (12), solenoid valve I (19), solenoid valve II (27), solenoid valve III (29), gas analyzer (15), temperature sensor (13) and PLC automatic control system (3) . 2. The drum-type biological evaporation device according to claim 1, characterized in that: the outside of the drum main body (1) is made of galvanized steel, and the inside is made of polyethylene plastic. 3. The drum-type biological evaporation device according to claim 1, characterized in that: the inner wall of the drum body (1) is provided with a baffle (22). 4. The drum-type biological evaporation device according to claim 1, characterized in that: the outer surface of the drum body (1) is provided with a discharge port (23) and a sampling port (24). 5. The drum-type biological evaporation device according to claim 1, characterized in that: universal wheels (25) for easy movement are arranged on the four corners of the base of the tripod (8). 6. The drum-type biological evaporation device according to claim 1, characterized in that: the ventilation pipe (10) is an aeration pipe (20) at the bottom of the drum main body (1).