CN108801888B - Indoor degradation simulation device for organic soil - Google Patents
Indoor degradation simulation device for organic soil Download PDFInfo
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- CN108801888B CN108801888B CN201810511522.6A CN201810511522A CN108801888B CN 108801888 B CN108801888 B CN 108801888B CN 201810511522 A CN201810511522 A CN 201810511522A CN 108801888 B CN108801888 B CN 108801888B
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Abstract
The invention discloses an indoor degradation simulation device for organic soil, wherein a temperature control water bath system is used for regulating the temperature, gas generated by degradation reaction of an organic soil degradation reaction chamber is recovered by a biogas monitoring and recovery system, and the biogas monitoring and recovery system is used for monitoring the gas; leachate generated by degradation reaction in the organic soil degradation reaction chamber is collected by a leachate collecting and recharging system, and the collected leachate is recharged to the organic soil degradation reaction chamber by the leachate collecting and recharging system; a sensor in the temperature and pH value dynamic monitoring system extends into organic soil in the cylindrical organic glass cylinder for monitoring the temperature and the pH value; the oxygenation and ventilation system is used for carrying out aerobic and anaerobic control on the organic soil degradation test. The invention researches the influence of the factors on the degradation rate of the organic soil by controlling the factors such as temperature parameters, aerobic and anaerobic conditions, pH value parameters, leachate recharge effect and the like.
Description
Technical Field
The invention relates to an indoor degradation simulation device for organic soil, and belongs to the technical field of geotechnical engineering.
Background
When the organic matter content of the clay exceeds 5% and the organic matter content of the sandy soil exceeds 3%, the clay is called as organic-containing soil. Organic soil is very common in human production activities and is closely related to geotechnical engineering activities; for example, peat soil exists in nature, which is soil with extremely poor engineering properties, and has the characteristics of large porosity ratio, strong compressibility, small natural density, high organic matter content and the like, and as the peat soil degrades, the house cracking accident of uneven settlement of a foundation and the road diseases of uneven settlement of a road are caused, people know that the organic matter degradation of the peat soil has great influence on the engineering properties of the peat soil, so that the peat soil is necessary for developing an indoor simulation test of the organic matter degradation of the peat soil; in human activities, with the development of economy and the increase of population, domestic garbage is increasing day by day, and the treatment mode of urban domestic garbage is mainly through landfill, so that artificially generated organic soil is namely garbage soil, and as the organic content in the garbage soil is very high, the garbage soil can generate large settlement deformation due to the degradation of organic matters in the garbage soil in the landfill process, and the settlement deformation can be generated only under the action of self weight sometimes, so that the safety and stability of a garbage landfill site are greatly influenced, and therefore, the development of indoor simulation tests for the degradation of the organic matters in the garbage soil is also necessary.
Disclosure of Invention
The invention provides an indoor degradation simulation device for organic soil, which aims to solve the problem of simulating indoor degradation of organic soil.
The technical scheme of the invention is as follows: an indoor degradation simulation device for organic soil comprises an organic soil degradation reaction chamber, a temperature control water bath system, a biogas monitoring and recovery system, a percolate collecting and recharging system, a temperature and pH value dynamic monitoring system, an oxygenation and ventilation system, a triangular bracket 5 and a pressure sensor 6;
the temperature control water bath system is arranged on a pressure sensor 6, the organic soil degradation reaction chamber is arranged in the temperature control water bath system through a triangular bracket 5, a biogas monitoring and recycling system, a recharging device of a percolate collecting and recharging system, a temperature and pH value dynamic monitoring system and an oxygenation and ventilation system are arranged above a cylindrical organic glass cylinder 1 of the organic soil degradation reaction chamber, and a collecting device of the percolate collecting and recharging system is arranged at the conical top of a conical glass collector 2 of the organic soil degradation reaction chamber;
the temperature control water bath system adjusts the temperature, the gas generated by the degradation reaction of the organic soil degradation reaction chamber is recovered by the biogas monitoring and recovering system, and the gas is monitored by the biogas monitoring and recovering system; leachate generated by degradation reaction in the organic soil degradation reaction chamber is collected by a leachate collecting and recharging system, and the collected leachate is recharged to the organic soil degradation reaction chamber by the leachate collecting and recharging system; a sensor in the temperature and pH value dynamic monitoring system extends into organic soil in the cylindrical organic glass cylinder 1 to monitor the temperature and the pH value; the oxygenation and ventilation system is used for carrying out aerobic and anaerobic control on the organic soil degradation test.
The organic soil degradation reaction chamber comprises a cylindrical organic glass cylinder 1, a conical glass collector 2, a circular silica gel plug 3 with reserved hole sites and a circular infiltration plate 4; wherein the cylindrical organic glass cylinder 1 has no bottom cover from top to bottom, one end of the conical glass collector 2 is connected with the bottom end of the cylindrical organic glass cylinder 1 through screw threads, the conical top of the other end of the conical glass collector 2 is connected with an L-shaped glass guide tube 17 of the percolate collecting and recharging system, the circular reserved hole site silica gel plug 3 seals the top end of the cylindrical organic glass cylinder 1, the circular reserved hole site of the circular reserved hole site silica gel plug 3 is used for a temperature sensor 7 of a temperature pH value dynamic monitoring system and a PH value sensor 8 of the temperature pH value dynamic monitoring system, the glass conduit 18 of the biogas monitoring and recovery system, the glass conduit 18 of the percolate collecting and recharging system and the glass conduit 18 of the oxygenation and ventilation system penetrate through the biogas monitoring and recovery system, the circular infiltration plate 4 is placed at one end, close to the conical glass collector 2, of the cylindrical organic glass cylinder 1, and the bottom end of the cylindrical organic glass cylinder 1 is tightly clamped with the circular ring of the triangular support 5.
The organic soil is paved into the cylindrical organic glass cylinder 1 in a layering mode, and the paving height is no more than two thirds of that of the cylindrical organic glass cylinder 1.
Temperature-controlled water bath system includes temperature sensor 7, water bath 9, heating device 10 and temperature control regulator 11, and wherein water bath 9 places on pressure sensor 6, places temperature sensor 7, heating device 10 and organic soil degradation reaction chamber in the water bath 9, and heating device 10 is connected with the temperature control regulator 11 that is located the water bath 9 outside.
The biological gas monitoring and recycling system comprises a gas pressure sensor 12, a gas sensor 13, a gas collecting device 14, a valve 15, a glass guide pipe 18 and a PPR heat-insulating layer 20; wherein one end of the glass conduit 18 is inserted into the cylindrical organic glass cylinder 1 of the organic soil degradation reaction chamber, the other end of the glass conduit 18 is sequentially connected with the valve 15, the air pressure sensor 12, the gas sensor 13 and the gas collecting device 14, the glass conduit 18 is externally coated with the PPR heat-insulating layer 20 after the connection is completed, and the gas collecting device 14 can be realized by a water drainage gas collection method or an evacuation gas collection method in a chemical experiment.
The percolate collecting and recharging system comprises a collecting device consisting of a valve 15, a rubber plug 16 and an L-shaped glass conduit 17, and a recharging device consisting of a valve 15 and a glass conduit 18; wherein one end of an L-shaped glass conduit 17 with a valve 15 is connected with the conical top of the conical glass collector 2 in the organic soil degradation reaction chamber, and a pipe orifice at the other end of the L-shaped glass conduit 17 is provided with a rubber plug 16 for plugging the pipe orifice; one end of a glass guide tube 18 with a valve 15 is inserted into the cylindrical organic glass cylinder 1 of the organic soil degradation reaction chamber through a circular reserved hole of the circular reserved hole silica gel plug 3 of the organic soil degradation reaction chamber, and the other end of the glass guide tube 18 is used for filling the collected percolate back into the cylindrical organic glass cylinder 1.
The temperature pH value dynamic monitoring system comprises a temperature sensor 7 and a pH value sensor 8; wherein the temperature sensor 7 and the PH value sensor 8 are inserted into the cylindrical organic glass cylinder 1 of the organic soil degradation reaction chamber through a round reserved hole of the round reserved hole silica gel plug 3 of the organic soil degradation reaction chamber; and the sensor probe inserted into the organic soil degradation reaction chamber is fully contacted with the organic soil.
The oxygenation and ventilation system comprises a valve 15, a glass conduit 18 and an air pump 19; wherein one end of a glass conduit 18 with a valve 15 is inserted into the cylindrical organic glass cylinder 1 of the organic soil degradation reaction chamber through a circular reserved hole of a circular reserved hole silica gel plug 3 of the organic soil degradation reaction chamber, and the glass conduit 18 is connected with an air pump 19.
The aerobic and anaerobic control is specifically as follows:
the anaerobic control is as follows: the valve 15 on the glass conduit 18 in the oxygenation air exchange system and the valve 15 on the glass conduit 18 in the percolate collecting and recharging system are closed all the time, and the valve 15 on the glass conduit 18 in the biological gas monitoring and recovering system is opened;
aerobic control is as follows: when the organic soil degradation reaction chamber is exhausted of oxygen, the valve 15 on the glass conduit 18 in the biological gas monitoring and recovery system is closed to stop tail gas collection, the valve 15 on the glass conduit 18 in the oxygenation air exchange system and the valve 15 on the glass conduit 18 in the percolate collection and recharge system are opened, the air pump 19 in the oxygenation air exchange system is used for exhausting air to the organic soil degradation reaction chamber, so that the gas in the reaction chamber flows to achieve the effects of oxygenation air exchange, after the oxygenation air exchange is completed, the air pump 19, the valve 15 on the glass conduit 18 in the oxygenation air exchange system and the valve 15 on the glass conduit 18 in the percolate collection and recharge system are closed, and the valve 15 on the glass conduit 18 in the biological gas monitoring and recovery system is opened to restart the degradation test.
The invention has the beneficial effects that: the device has the characteristics of simple and compact structure, multifunctional integration, simple operation, high precision and low cost. The method can be applied to the indoor degradation test of the soil with higher organic matter content such as peat soil, garbage soil and the like to explore the degradation mechanism of the organic matter soil, and the influence of the factors on the degradation rate of the organic matter soil is researched by controlling the factors such as temperature parameter, aerobic and anaerobic conditions, pH value parameter, leachate recharge effect and the like.
Drawings
FIG. 1 is a schematic structural diagram of an indoor degradation simulation device for organic soil according to the present invention;
FIG. 2 is a schematic view of a tapered glass collector configuration of the present invention;
FIG. 3 is a schematic view of the tripod structure of the present invention;
the reference numbers in the figures: 1-cylindrical organic glass cylinder, 2-conical glass collector, 3-circular silica gel plug with reserved hole sites, 4-circular filter infiltration plate, 5-triangular support, 6-pressure sensor, 7-temperature sensor, 8-PH value sensor, 9-water bath tank, 10-heating device, 11-temperature control regulator, 12-air pressure sensor, 13-gas sensor, 14-gas collection device, 15-valve, 16-rubber plug, 17-L type glass conduit, 18-straight glass conduit, 19-air pump and 20-PPR heat preservation layer.
Detailed Description
The invention will be further described with reference to the following figures and examples, without however restricting the scope of the invention thereto.
Example 1: as shown in fig. 1-3, an indoor degradation simulation device for organic soil comprises an organic soil degradation reaction chamber, a temperature control water bath system, a biogas monitoring and recovery system, a percolate collecting and recharging system, a temperature and pH value dynamic monitoring system, an oxygenation and ventilation system, a triangular bracket 5 and a pressure sensor 6; the temperature control water bath system is arranged on a pressure sensor 6, the organic soil degradation reaction chamber is arranged in the temperature control water bath system through a triangular bracket 5, a biogas monitoring and recycling system, a recharging device of a percolate collecting and recharging system, a temperature and pH value dynamic monitoring system and an oxygenation and ventilation system are arranged above a cylindrical organic glass cylinder 1 of the organic soil degradation reaction chamber, and a collecting device of the percolate collecting and recharging system is arranged at the conical top of a conical glass collector 2 of the organic soil degradation reaction chamber; the temperature control water bath system adjusts the temperature, the gas generated by the degradation reaction of the organic soil degradation reaction chamber is recovered by the biogas monitoring and recovering system, and the gas is monitored by the biogas monitoring and recovering system; leachate generated by degradation reaction in the organic soil degradation reaction chamber is collected by a leachate collecting and recharging system, and the collected leachate is recharged to the organic soil degradation reaction chamber by the leachate collecting and recharging system; a sensor in the temperature and pH value dynamic monitoring system extends into organic soil in the cylindrical organic glass cylinder 1 to monitor the temperature and the pH value; the oxygenation and ventilation system is used for carrying out aerobic and anaerobic control on the organic soil degradation test.
Further, the organic soil degradation reaction chamber can be arranged to comprise a cylindrical organic glass cylinder 1, a conical glass collector 2, a circular silica gel plug 3 with reserved hole sites and a circular infiltration plate 4; wherein the cylindrical organic glass cylinder 1 has no bottom cover from top to bottom, one end of the conical glass collector 2 is connected with the bottom end of the cylindrical organic glass cylinder 1 through screw threads, the conical top of the other end of the conical glass collector 2 is connected with an L-shaped glass guide tube 17 of the percolate collecting and recharging system, the circular reserved hole site silica gel plug 3 seals the top end of the cylindrical organic glass cylinder 1, the circular reserved hole site of the circular reserved hole site silica gel plug 3 is used for a temperature sensor 7 of a temperature pH value dynamic monitoring system and a PH value sensor 8 of the temperature pH value dynamic monitoring system, the glass conduit 18 of the biogas monitoring and recovery system, the glass conduit 18 of the percolate collecting and recharging system and the glass conduit 18 of the oxygenation and ventilation system penetrate through the biogas monitoring and recovery system, the circular infiltration plate 4 is placed at one end, close to the conical glass collector 2, of the cylindrical organic glass cylinder 1, and the bottom end of the cylindrical organic glass cylinder 1 is tightly clamped with the circular ring of the triangular support 5.
Further, can set up organic matter soil is laid in the cylinder organic glass section of thick bamboo 1 by layer, and the height of laying does not exceed two-thirds of cylinder organic glass section of thick bamboo 1.
Further, can set up temperature-controlled water bath system includes temperature sensor 7, water bath 9, heating device 10 and temperature control regulator 11, and wherein water bath 9 places on pressure sensor 6, places temperature sensor 7, heating device 10 and organic matter soil degradation reaction chamber in the water bath 9, and heating device 10 is connected with the temperature control regulator 11 that is located the water bath 9 outside. And a temperature sensor 7 is respectively arranged in the temperature control water bath system and the organic soil degradation reaction chamber, so that the temperature conditions of the water bath tank and the organic soil degradation reaction chamber are mastered in real time, and the temperature in the organic soil degradation reaction chamber is accurate to the temperature standard required by the test.
Further, the biogas monitoring and recycling system can be arranged to comprise a gas pressure sensor 12, a gas sensor 13, a gas collecting device 14, a valve 15, a glass conduit 18 and a PPR insulating layer 20; wherein one end of the glass conduit 18 is inserted into the cylindrical organic glass cylinder 1 of the organic soil degradation reaction chamber, the other end of the glass conduit 18 is sequentially connected with the valve 15, the air pressure sensor 12, the gas sensor 13 and the gas collecting device 14, the glass conduit 18 is externally coated with the PPR heat-insulating layer 20 after the connection is completed, and the gas collecting device 14 can be realized by a water drainage gas collection method or an evacuation gas collection method in a chemical experiment.
Further, the percolate collecting and recharging system can be arranged to comprise a collecting device consisting of a valve 15, a rubber plug 16 and an L-shaped glass conduit 17, and a recharging device consisting of a valve 15 and a glass conduit 18; wherein one end of an L-shaped glass conduit 17 with a valve 15 is connected with the conical top of the conical glass collector 2 in the organic soil degradation reaction chamber, and a pipe orifice at the other end of the L-shaped glass conduit 17 is provided with a rubber plug 16 for plugging the pipe orifice; one end of a glass guide tube 18 with a valve 15 is inserted into the cylindrical organic glass cylinder 1 of the organic soil degradation reaction chamber through a circular reserved hole of the circular reserved hole silica gel plug 3 of the organic soil degradation reaction chamber, and the other end of the glass guide tube 18 is used for filling the collected percolate back into the cylindrical organic glass cylinder 1.
Further, the temperature and PH value dynamic monitoring system can be set to include a temperature sensor 7 and a PH value sensor 8; wherein the temperature sensor 7 and the PH value sensor 8 are inserted into the cylindrical organic glass cylinder 1 of the organic soil degradation reaction chamber through a round reserved hole of the round reserved hole silica gel plug 3 of the organic soil degradation reaction chamber; and the sensor probe inserted into the organic soil degradation reaction chamber is fully contacted with the organic soil.
Further, the oxygenation and ventilation system may be provided with a valve 15, a glass tube 18 and an air pump 19; wherein one end of a glass conduit 18 with a valve 15 is inserted into the cylindrical organic glass cylinder 1 of the organic soil degradation reaction chamber through a circular reserved hole of a circular reserved hole silica gel plug 3 of the organic soil degradation reaction chamber, and the glass conduit 18 is connected with an air pump 19.
Further, the aerobic-anaerobic control may be specifically set as:
the anaerobic control is as follows: the valve 15 on the glass conduit 18 in the oxygenation air exchange system and the valve 15 on the glass conduit 18 in the percolate collecting and recharging system are closed all the time, and the valve 15 on the glass conduit 18 in the biological gas monitoring and recovering system is opened;
aerobic control is as follows: when the organic soil degradation reaction chamber is exhausted of oxygen, the valve 15 on the glass conduit 18 in the biological gas monitoring and recovery system is closed to stop tail gas collection, the valve 15 on the glass conduit 18 in the oxygenation air exchange system and the valve 15 on the glass conduit 18 in the percolate collection and recharge system are opened, the air pump 19 in the oxygenation air exchange system is used for exhausting air to the organic soil degradation reaction chamber, so that the gas in the reaction chamber flows to achieve the effects of oxygenation air exchange, after the oxygenation air exchange is completed, the air pump 19, the valve 15 on the glass conduit 18 in the oxygenation air exchange system and the valve 15 on the glass conduit 18 in the percolate collection and recharge system are closed, and the valve 15 on the glass conduit 18 in the biological gas monitoring and recovery system is opened to restart the degradation test.
The using process of the invention is as follows:
s1, setting up a temperature-controlled water bath system, placing the water bath tank 9 on the pressure sensor 6, and measuring the change of the pressure value before and after the reaction through the pressure sensor 6. Put heating device 10 in water bath 9, pay attention to when heating device 10 puts and leave the position that organic matter soil degradation reacting chamber was laid, after heating device 10 put on being connected to temperature control regulator 11 with heating device 10's wire rod, temperature control regulator 11 places in the water bath 9 outside, and the water logging in the water bath 9 is over 1 cylinder organic glass section of thick bamboo 1.
S2, will circular filtration board 4 is put and is close to 2 one end of toper glass collector at cylinder organic glass section of thick bamboo 1, connects cylinder organic glass section of thick bamboo 1 and toper glass collector 2 through threaded connection' S mode, puts into the ring of A-frame 5 to 2 one end of toper glass collector, and water bath box 9 is put into in advance to A-frame 5, and the diameter of the ring on A-frame 5 slightly is less than the diameter of a cylinder organic glass section of thick bamboo 1 to organic matter soil degradation reacting chamber can and the ring chucking of A-frame 5. The pipe orifice of the L-shaped glass conduit 17 connected to the tapered glass collector 2 is plugged with a rubber plug 16, and the valve 15 is closed.
S3, paving organic soil into the cylindrical organic glass cylinder 1 layer by layer, wherein the paving height is not more than two thirds of the cylindrical organic glass cylinder 1.
S4, assembling the biogas monitoring and recycling system as follows: the valve 15, the air pressure sensor 12, the gas sensor 13 and the gas collecting device 14 are sequentially connected through a plurality of sections of glass guide pipes 18, after the connection is finished, a PPR heat preservation layer 20 is coated on the glass guide pipes 18, and the gas collecting device 14 can be realized by adopting a water drainage gas collection method or an evacuation gas collection method and the like in a chemical experiment. The PPR heat-insulating layer is wrapped outside the glass conduit, so that the phenomenon that the gas in the glass conduit expands with heat and contracts with cold due to the temperature difference between the organic soil degradation reaction chamber and the biogas monitoring and recycling system can be eliminated, the pressure non-uniform change caused by the heat and cold of the gas can be eliminated, and the error in the biogas pressure measurement can be reduced; for example, the content of carbon dioxide in the biogas generated by aerobic degradation is high, and the content of methane gas and ethanol gas in the biogas generated by anaerobic degradation is high.
S5, assembling the oxygenation and ventilation system: one end of the glass conduit 18 is provided with a valve 15, the other end is connected with an air pump 19, the glass conduit 18 at the end of the valve 15 is reserved with a certain length, and the glass conduit is conveniently connected with the silica gel plug 3 of the circular reserved hole site.
S6, connecting the glass guide tube 18, the temperature sensor 7 and the PH value sensor 8 of the assembled biogas monitoring and recovery system, the oxygenation and ventilation system and the filtrate collection and recharge system on the circular silica gel plug 3 with the reserved hole position, and then sealing the cylindrical organic glass cylinder 1 by the silica gel plug 3 with the reserved hole position; the airtightness of each connection part was noted so as not to cause errors in the test.
S7, placing the organic soil degradation reaction chamber in a water bath box 9, connecting data lines of various sensors with a computer, and checking whether the connection condition is good.
S8, adding water and heating in a water bath box 9, wherein before the water temperature and the temperature of the organic soil in the organic soil degradation reaction chamber are not heated to the required test temperature, the valve 15 on the biogas monitoring and recovery system is in a closed state, and other valves 15 connected to the circular reserved hole site silica gel plug 3 are in an open state, so as to eliminate the air pressure measurement error caused by expansion and contraction of the gas in the device due to temperature difference, the water temperature and the temperature of the organic soil in the organic soil degradation reaction chamber can be observed through the temperature sensors 7 arranged on the water temperature and the organic soil, and when the water temperature and the temperature of the organic soil in the organic soil degradation reaction chamber are stable, the other valves 15 can be closed, the valve 15 on the biogas monitoring and recovery system is opened, and the organic soil degradation test is started; the ambient temperature can be adjusted by the temperature control regulator 11 according to the needs of the test.
S9, aerobic and anaerobic control: if the organic soil degradation test to be carried out is an anaerobic environment, the valve 15 on the air pump 19 and the valve 15 on the glass conduit 18 on the percolate collecting and recharging system are always closed, and the valve 15 on the glass conduit 18 in the biogas monitoring and recovering system is opened; if the organic soil degradation test is carried out in an aerobic environment, the operation is that, after the organic soil is degraded for a period of time, when the amount of the biological gas collected by the gas collection means 14 increases slowly or when the gas sensor 13 detects a change in the gas species, the oxygen exhaustion of the organic soil degradation reaction chamber is illustrated, the aerobic degradation is slow, at the moment, the valve 15 on the biogas monitoring and recovery system is closed to stop tail gas collection, the valve 15 on the air pump 19 and the valve 15 on the glass conduit 18 on the percolate collection and recharge system are opened, the air pump 19 is used for exhausting air to the organic soil degradation reaction chamber, so that the gas in the reaction chamber flows to achieve the effects of oxygenation and air exchange, the valve 15 on the air pump 19 and the air pump 19 are closed after the oxygenation and air exchange is completed, the valve 15 on the glass conduit 18 on the percolate collection and recharge system is also closed, and the valve on the biogas monitoring and recovery system is opened to restart the degradation test.
S10, the use of the percolate collecting and recharging system, in the organic soil degradation process, the solid phase of the organic soil is lost, the lost solid phase generates gas and liquid, the percolate is collected by the conical glass collector 2, after a certain amount of percolate is collected, the whole reaction system can be taken out from the water bath environment, the valve 15 and the rubber plug 16 at the pipe orifice of the L-shaped glass conduit 17 on the conical glass collector 2 are opened to collect the effluent percolate by using the using cylinder, at the moment, the volume of the percolate can be measured, the components of the percolate can be sampled and analyzed, then the percolate can be recharged by opening the valve 15 on the glass conduit 18 on the percolate collecting and recharging system, the valve 15 on the biogas monitoring and recovering system and the valve 15 on the oxygenation and ventilation system are closed before recharging, the PH value of the percolate can be adjusted to control the parameter change of the PH value in the reaction chamber during the percolate collecting, in addition, the recharge of the percolate can play a role in accelerating the degradation of organic soil in the reaction chamber.
S11, in the whole organic soil degradation process, a plurality of important parameters are connected with a computer through a sensor to realize online real-time monitoring of data, such as air pressure change, gas composition change, temperature change and PH value change at each moment; the device is an indoor degradation simulation device for the organic soil, which can perform multi-parameter control and multi-factor coupling tests, has high data acquisition automation degree, can collect data with good continuity, dynamically monitors the data, and has the characteristics of simple and compact structure, multifunctional integration, simple operation, higher precision and low cost.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (8)
1. The indoor degradation simulation device for the organic soil is characterized in that: the device comprises an organic soil degradation reaction chamber, a temperature control water bath system, a biogas monitoring and recovering system, a percolate collecting and recharging system, a temperature and pH value dynamic monitoring system, an oxygenation and ventilation system, a triangular bracket (5) and a pressure sensor (6);
the temperature control water bath system is arranged on a pressure sensor (6), the organic soil degradation reaction chamber is arranged in the temperature control water bath system through a triangular bracket (5), a biogas monitoring and recycling system, a recharging device of a percolate collecting and recharging system, a temperature and pH value dynamic monitoring system and an oxygenation and ventilation system are arranged above a cylindrical organic glass cylinder (1) of the organic soil degradation reaction chamber, and a collecting device of the percolate collecting and recharging system is arranged at the conical top of a conical glass collector (2) of the organic soil degradation reaction chamber;
the temperature control water bath system adjusts the temperature, the gas generated by the degradation reaction of the organic soil degradation reaction chamber is recovered by the biogas monitoring and recovering system, and the gas is monitored by the biogas monitoring and recovering system; leachate generated by degradation reaction in the organic soil degradation reaction chamber is collected by a leachate collecting and recharging system, and the collected leachate is recharged to the organic soil degradation reaction chamber by the leachate collecting and recharging system; a sensor in the temperature and pH value dynamic monitoring system extends into organic soil in the cylindrical organic glass cylinder (1) for monitoring the temperature and the pH value; the oxygenation and ventilation system performs aerobic and anaerobic control on the organic soil degradation test;
the percolate collecting and recharging system comprises a collecting device consisting of a valve (15), a rubber plug (16) and an L-shaped glass conduit (17), and a recharging device consisting of the valve (15) and a glass conduit (18); wherein one end of an L-shaped glass conduit (17) with a valve (15) is connected with the cone top of a conical glass collector (2) in the organic soil degradation reaction chamber, and a pipe orifice at the other end of the L-shaped glass conduit (17) is provided with a rubber plug (16) for plugging the pipe orifice; one end of a glass guide pipe (18) with a valve (15) is inserted into a cylindrical organic glass cylinder (1) of the organic soil degradation reaction chamber through a circular reserved hole of a circular reserved hole silica gel plug (3) of the organic soil degradation reaction chamber, and the other end of the glass guide pipe (18) is used for filling collected percolate back into the cylindrical organic glass cylinder (1).
2. The indoor degradation simulation device of organic soil according to claim 1, wherein: the organic soil degradation reaction chamber comprises a cylindrical organic glass cylinder (1), a conical glass collector (2), a circular silica gel plug (3) with reserved hole sites and a circular infiltration plate (4); wherein, the cylindrical organic glass cylinder (1) has no bottom cover from top to bottom, one end of the conical glass collector (2) is connected with the bottom end of the cylindrical organic glass cylinder (1) through screw threads, the conical top at the other end of the conical glass collector (2) is connected with an L-shaped glass conduit (17) of the percolate collecting and recharging system, a circular reserved hole site silica gel plug (3) seals the top end of the cylindrical organic glass cylinder (1), a circular reserved hole site of the circular reserved hole site silica gel plug (3) is used for a temperature sensor (7) of the temperature and pH value dynamic monitoring system, a PH value sensor (8) of the temperature and pH value dynamic monitoring system, a glass conduit (18) of the biogas monitoring and recycling system, a glass conduit (18) of the percolate collecting and recharging system and a glass conduit (18) of the oxygenation and ventilation system to pass through, a circular infiltration plate (4) is arranged at one end of the cylindrical organic, the bottom end of the cylindrical organic glass cylinder (1) is tightly clamped with the circular ring of the triangular support (5).
3. The indoor degradation simulation device of organic soil according to claim 1, wherein: the organic soil is paved into the cylindrical organic glass cylinder (1) layer by layer, and the paving height is no more than two thirds of the cylindrical organic glass cylinder (1).
4. The indoor degradation simulation device of organic soil according to claim 1, wherein: temperature-controlled water bath system includes temperature sensor (7), water bath (9), heating device (10) and temperature control regulator (11), and wherein water bath (9) are placed on pressure sensor (6), places temperature sensor (7), heating device (10) and organic soil degradation reaction chamber in water bath (9), and heating device (10) are connected with temperature control regulator (11) that are located the water bath (9) outside.
5. The indoor degradation simulation device of organic soil according to claim 1, wherein: the biological gas monitoring and recycling system comprises a gas pressure sensor (12), a gas sensor (13), a gas collecting device (14), a valve (15), a glass guide pipe (18) and a PPR heat-insulating layer (20); wherein glass pipe (18) one end inserts in organic matter soil degradation reaction chamber's cylinder organic glass section of thick bamboo (1), and valve (15), baroceptor (12), gas sensor (13), gas collecting device (14) are connected in proper order to glass pipe (18) other end, outsourcing PPR heat preservation (20) on glass pipe (18) after the connection is accomplished, and gas collecting device (14) can adopt the drainage gas collection method or the evacuation gas collection method in the chemical experiment to realize.
6. The indoor degradation simulation device of organic soil according to claim 1, wherein: the temperature pH value dynamic monitoring system comprises a temperature sensor (7) and a PH value sensor (8); wherein the temperature sensor (7) and the PH value sensor (8) are inserted into the cylindrical organic glass cylinder (1) of the organic soil degradation reaction chamber through a round reserved hole of the round reserved hole silica gel plug (3) of the organic soil degradation reaction chamber; and the sensor probe inserted into the organic soil degradation reaction chamber is fully contacted with the organic soil.
7. The indoor degradation simulation device of organic soil according to claim 1, wherein: the oxygenation and ventilation system comprises a valve (15), a glass conduit (18) and an air pump (19); one end of a glass guide tube (18) with a valve (15) is inserted into a cylindrical organic glass cylinder (1) of the organic soil degradation reaction chamber through a circular reserved hole of a circular reserved hole silica gel plug (3) of the organic soil degradation reaction chamber, and the glass guide tube (18) is connected with an air pump (19).
8. The indoor degradation simulation device of organic soil according to claim 1, wherein: the aerobic and anaerobic control is specifically as follows:
the anaerobic control is as follows: the valve (15) on the glass conduit (18) in the oxygenation and ventilation system and the valve (15) on the glass conduit (18) in the percolate collecting and recharging system are closed all the time, and the valve (15) on the glass conduit (18) in the biogas monitoring and recovering system is opened;
aerobic control is as follows: when the organic soil degradation reaction chamber is exhausted of oxygen, a valve (15) on a glass conduit (18) in the biogas monitoring and recovery system is closed to stop tail gas collection, a valve (15) on the glass conduit (18) in the oxygenation and ventilation system and a valve (15) on the glass conduit (18) in the percolate collection and recharge system are opened, an air pump (19) in the oxygenation and ventilation system is used for exhausting air to the organic soil degradation reaction chamber, so that the gas in the reaction chamber flows to achieve the effects of oxygenation and ventilation, the air pump (19), the valve (15) on the glass conduit (18) in the oxygenation and ventilation system and the valve (15) on the glass conduit (18) in the percolate collection and recharge system are closed after oxygenation and ventilation is completed, and a valve (15) on the glass conduit (18) in the biogas monitoring and recovery system is opened to restart a degradation test.
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| CN110274852B (en) * | 2019-07-15 | 2021-08-17 | 长安大学 | Underground water dynamic simulation experiment system and method |
| CN110964661A (en) * | 2019-11-13 | 2020-04-07 | 西南石油大学 | Method for simulating early degradation of organic matters in microbial rock |
| CN113670954A (en) * | 2021-08-26 | 2021-11-19 | 浙江大学建筑设计研究院有限公司 | Indoor test device for researching water content change rule of garbage soil degradation process |
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| KR20040068638A (en) * | 2003-01-27 | 2004-08-02 | 김종오 | A Unit type reactor for the remediation of oil-contaminated soil using high efficiency microbial inocula |
| KR101647024B1 (en) * | 2016-01-26 | 2016-08-10 | 한국건설기술연구원 | Apparatus for diagnosing corrosion of soil reinforcement member using bearing plate embedded compression spring with electric wire, and construction for the same |
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| CN107255490A (en) * | 2017-06-14 | 2017-10-17 | 哈尔滨工业大学深圳研究生院 | Multifunctional garbage soil degraded compression device |
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| KR101647024B1 (en) * | 2016-01-26 | 2016-08-10 | 한국건설기술연구원 | Apparatus for diagnosing corrosion of soil reinforcement member using bearing plate embedded compression spring with electric wire, and construction for the same |
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