Intelligent biological reactor remediation technical equipment for coal chemical polluted site

Abstract

The utility model relates to intelligent biological pile repairing technical equipment for a polluted site in the coal chemical industry, which is characterized in that a percolate storage barrel, a pesticide supplementing tank and a water supplementing tank are sequentially communicated, and a water supplementing pump injects a microbial nutrient agent into a biological pile through a nutrient and moisture blending water inlet pipe; the nutrient moisture blending water return pipe is used for enabling the uninjected microbial nutrient agent to flow back into the nutrient moisture blending water inlet pipe, the gas-liquid separator is communicated with the activated carbon box through the Roots blower and used for filtering gas, the gas-liquid separator is communicated with a plurality of gas extraction branch pipes through a gas extraction main pipe, and the gas extraction branch pipes are inserted and buried at the bottom of the biological pile and used for filtering gas. The Roots blower pumps a gas-liquid mixture of the biological pile through the gas pumping branch pipe, the gas inlet pipe feeds gas into the biological pile, the Roots blower and the gas pump can carry out gas pumping and gas exchange on the biological pile, and the extraction pump pumps the collected microbial nutrient agent back into the leachate storage barrel through the leachate collection pipe. The device disclosed by the utility model integrates the functions of preparing and accurately injecting a microbial nutrient agent, extracting and processing gas and automatically monitoring data.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of coal chemical pollution site intelligent biological pile repair technology equipment. BACKGROUND

[0002] At present, polycyclic aromatic hydrocarbons and other organic pollution sites are still mainly repaired by thermal desorption technology, which has the problems of high energy consumption and high cost, and it is urgent to develop efficient, inexpensive and simple operation treatment technology to repair contaminated land. Microbial remediation technology with biological catalytic degradation function has the advantages of environmental friendliness, low cost and no secondary pollution, but the corresponding supporting equipment is mostly in the research stage, and industrialization application is less, and there is lack of experience in the development of intensification and intelligentization of equipment. Therefore, it is urgent to develop intelligent microbial equipment for the repair of northwest coal chemical pollution sites. UTILITY MODEL CONTENT

[0003] The utility model provides a kind of coal chemical pollution site intelligent biological pile repair technology equipment, the intelligent microbial remediation technology equipment of microorganism nutrient medicament configuration and precision injection, gas extraction-treatment and data automatic monitoring are integrated in one, with the characteristics of intelligentization, intensification, easy operation and installation.

[0004] In order to achieve the above purpose, the utility model adopts the technical scheme of:

[0005] A kind of coal chemical pollution site intelligent biological pile repair technology equipment, characterized by: percolate storage barrel, medicine tank and water tank are sequentially communicated, water pump is arranged on the pipeline between the medicine tank and the water tank, the water pump is communicated with nutrient water distribution inlet pipe, can uniformly inject microbial nutrient medicament on biological pile, the water tank is communicated with water storage pool by water pump, nutrient water distribution return pipe is communicated with the inlet end of the water pump, for the microbial nutrient medicament not injected to flow back into the nutrient water distribution inlet pipe;

[0006] The gas outlet end of gas-liquid separator is communicated with activated carbon tank by Roots blower, the inlet end of gas-liquid separator is communicated with gas extraction main pipe, the gas extraction main pipe is communicated with a plurality of gas extraction branch pipes, the gas extraction branch pipes are inserted into the bottom of the biological pile, the Roots blower extracts gas-liquid mixture into the biological pile through the gas extraction main pipe and the gas extraction branch pipes, the extracted gas-liquid mixture enters the gas-liquid separator for separation, the separated gas enters the activated carbon tank for filtration and discharge, the separated liquid flows into percolate storage barrel for recycling, a plurality of air inlet pipes are arranged at the top of the biological pile, the air inlet pipes are located above the gas extraction branch pipes, the air inlet pipes are communicated with soil gas guide pipe, the soil gas guide pipe introduces air into the biological pile by air pump, the Roots blower and the air pump can extract and ventilate the biological pile;

[0007] The gas-liquid separator is also in communication with the leachate storage tank, and the extracted pump extracts the collected microbial nutrient agent into the leachate storage tank through the leachate collection pipe;

[0008] The top of the bio-pile is provided with a drip irrigation pipe and a drip head, the drip irrigation pipe is in communication with the nutrient water distribution pipe, the drip head can uniformly inject the microbial nutrient agent into the bio-pile, the bottom of the bio-pile is provided with the leachate collection pipe for collecting the microbial nutrient agent, and the bottom of the bio-pile is also provided with an air extraction branch pipe in communication with the air extraction main pipe for extracting the gas-liquid mixture in the bio-pile, and a soil gas monitoring point is arranged in the bio-pile, and a soil gas probe is arranged in the soil gas monitoring point for real-time monitoring of the oxygen content, water content and carbon-nitrogen-phosphorus content ratio in the bio-pile;

[0009] The central control system is signal-connected with the soil gas probe, and is also signal-connected with the extraction pump, the water replenishing pump and the Roots blower, respectively, the central control system can uniformly inject and air-exchange the bio-pile by receiving the signal of the soil gas probe and controlling the opening and closing of the pump body and the blower, and the central control system is signal-connected with the monitoring instrument, and the data monitored by the soil gas probe is displayed and stored in real time on a large screen.

[0010] The intelligent bio-pile remediation technology equipment for coal chemical industry contaminated sites, wherein: the drip irrigation pipe is provided with an adjusting valve, the air extraction branch pipe is provided with a control valve and a flow meter, and the central control system is signal-connected with the adjusting valve, the control valve and the flow meter to control the opening and closing of the valve body and receive the flow data.

[0011] The intelligent bio-pile remediation technology equipment for coal chemical industry contaminated sites, wherein: the bottom of the bio-pile is provided with a gravel air guide layer, geotextile is arranged between the bio-pile and the gravel air guide layer, the leachate collection pipe is arranged through the gravel air guide layer and the concrete anti-seepage foundation, the concrete anti-seepage foundation is arranged to be high in the middle and low on both sides, the leachate is concentrated to the middle and enters the leachate collection pipe, clean clay is arranged around the gravel air guide layer, a covering film is arranged above the bio-pile, and sandbags are tightly anchored around the covering film.

[0012] The intelligent bio-pile remediation technology equipment for coal chemical industry contaminated sites, wherein: one side of the leachate collection pipe facing the bio-pile is slotted, the slot width is 0.5mm, the slot interval is 1cm, and the slot depth is 25mm for collecting leachate.

[0013] The coal chemical industry pollution site intelligent biological pile repair technology equipment, wherein the soil gas probe comprises a temperature sensor, a humidity sensor, a nitrogen, phosphorus and potassium probe, a PH probe, an oxidation-reduction potential meter, an oxygen content monitoring device, a carbon dioxide monitoring device and a gas / liquid vortex flow meter, and real-time monitoring of soil temperature, PH value, nitrogen, phosphorus and potassium content, humidity, pressure, oxidation-reduction potential and soil gas of the biological pile is performed.

[0014] The coal chemical industry pollution site intelligent biological pile repair technology equipment has the advantages that the intelligent microbial repair technology equipment integrates microbial nutrient agent preparation, precise injection, gas extraction-treatment and automatic data monitoring, is intelligent, intensive, convenient to operate and install, and can meet the microbial repair technology demand of coal chemical industry pollution sites in northwest China. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a top view structural diagram of the coal chemical industry pollution site intelligent biological pile repair technology equipment.

[0016] Figure 2 is a tank body and pump body structural diagram of the coal chemical industry pollution site intelligent biological pile repair technology equipment.

[0017] Figure 3 is a front view structural diagram of the coal chemical industry pollution site intelligent biological pile repair technology equipment.

[0018] Figure 4 is a cross-sectional structural diagram of the biological pile.

[0019] Figure 5 is a structural diagram of the coal chemical industry pollution site intelligent biological pile repair technology equipment combined with the biological pile.

[0020] BRIEF DESCRIPTION OF DRAWINGS: 1-percolate storage barrel; 2-medicine supplementing tank; 3-water supplementing tank; 4-extraction pump; 5-water supplementing pump; 6-water pumping pump; 7-central control system; 8-gas-liquid separator; 9-roots blower; 10-activated carbon box; 11-biological pile; 12-geotextile; 13-gravel gas guide layer; 14-clean clay; 15-concrete impermeable foundation; 16-air extraction branch pipe; 17-percolate collection pipe; 18-soil gas probe; 19-anchored sand bag; 20-nutrient water and moisture allocation water inlet pipe; 21-signal line; 22-emitter; 23-covering film; 24-air inlet pipe; 25-soil gas guide pipe; 26-nutrient water and moisture allocation water return pipe; 27-air extraction main pipe; 28-control valve; 29-flow meter; 30-regulating valve; 31-soil gas monitoring point; 32-drip irrigation pipe. DETAILED DESCRIPTION

[0021] As Figures 1 to 5As shown, the coal chemical pollution site intelligent biological pile repair technology equipment is characterized in that: the leachate storage barrel 1, the medicine supplement tank 2 and the water supplement tank 3 are sequentially communicated, a water supplement pump 5 is arranged on the pipeline between the medicine supplement tank 2 and the water supplement tank 3, the water supplement pump 5 is communicated with a nutrient water distribution inlet pipe 20, and the water supplement pump 5 can uniformly inject microbial nutrient agents on the biological pile 11; the water supplement tank 3 is communicated with a water storage pool through a water pump 6, and a nutrient water distribution return pipe 26 is communicated with an inlet end of the water supplement pump 5, so that the un-injected microbial nutrient agents flow back to the nutrient water distribution inlet pipe 20.

[0022] The gas outlet end of the gas-liquid separator 8 is communicated with the activated carbon tank 10 through the Roots blower 9, the inlet end of the gas-liquid separator 8 is communicated with a gas extraction main pipe 27, the gas extraction main pipe 27 is communicated with a plurality of gas extraction branch pipes 16, control valves 28 and flow meters 29 are arranged on the gas extraction branch pipes 16, the gas extraction branch pipes 16 are inserted into the bottom of the biological pile 11, the Roots blower 9 extracts gas-liquid mixtures into the biological pile 11 through the gas extraction main pipe 27 and the gas extraction branch pipes 16, the extracted gas-liquid mixtures are separated in the gas-liquid separator 8, the separated gas is filtered and discharged into the activated carbon tank 10, and the separated liquid flows into the leachate storage barrel 1 for recycling, a plurality of air inlet pipes 24 are arranged at the top of the biological pile 11, the air inlet pipes 24 are located above the gas extraction branch pipes 16, the air inlet pipes 24 are communicated with soil air guide pipes 25, the soil air guide pipes 25 introduce air into the biological pile 11 through an air pump, and the Roots blower 9 and the air pump can extract and replace air in the biological pile 11.

[0023] The gas-liquid separator 8 is also communicated with the leachate storage barrel 1, an extraction pump 4 extracts the collected microbial nutrient agents back into the leachate storage barrel 1 through a leachate collection pipe 17, one side of the leachate collection pipe 17 facing the biological pile 11 is slotted, the slot width is 0.5 mm, the slot interval is 1 cm, and the slot depth is 25 mm, so as to collect leachate.

[0024] The top of the bio-pile 11 is provided with a drip irrigation pipe 32 and a drip head 22, the drip irrigation pipe 32 is provided with an adjusting valve 30, the drip irrigation pipe 32 is communicated with the nutrient water distribution pipe 20, the drip head 22 can uniformly inject microbial nutrient agent on the bio-pile 11, the bottom of the bio-pile 11 is provided with the leachate collection pipe 17 for collecting microbial nutrient agent, the bottom of the bio-pile 11 is also provided with the air extraction branch pipe 16 which is communicated with the air extraction main pipe 27 for extracting the gas-liquid mixture in the bio-pile 11, the bio-pile 11 is provided with a soil gas monitoring point 31, the soil gas monitoring point 31 is provided with a soil gas probe 18, the soil gas probe 18 includes a temperature sensor, a humidity sensor, a nitrogen-phosphorus-potassium probe, a PH probe, an oxidation-reduction potential meter, an oxygen content monitoring device, a carbon dioxide monitoring device and a gas / liquid vortex flowmeter, which can realize real-time monitoring of the soil temperature, PH value, nitrogen-phosphorus-potassium content, humidity, pressure, oxidation-reduction potential and soil gas of the bio-pile 11.

[0025] The bottom of the bio-pile 11 is provided with a gravel air guide layer 13, the bio-pile 11 and the gravel air guide layer 13 are provided with a geotextile 12, the gravel air guide layer 13 and the concrete anti-seepage foundation 15 are provided with the leachate collection pipe 17, the concrete anti-seepage foundation 15 is provided with a low middle and high sides, the leachate is concentrated in the middle and enters the leachate collection pipe 17, the gravel air guide layer 13 is provided with clean clay 14 around, the bio-pile 11 is provided with a covering film 23, and the covering film 23 is pressed and anchored with sandbags 19 around.

[0026] The central control system 7 is signal connected with the soil gas probe 18 through the signal line 21, the central control system 7 is also signal connected with the extraction pump 4, the water supplement pump 5 and the Roots blower 9 respectively, the central control system 7 can realize uniform injection and air exchange of the bio-pile 11 by receiving the signal of the soil gas probe 18 and controlling the opening and closing of the pump body and the blower, the central control system 7 is signal connected with the adjusting valve 30, the control valve 28 and the flowmeter 29, controls the opening and closing of the valve body and receives the flow data, the central control system 7 is signal connected with the monitoring instrument, displays and stores the data monitored by the soil gas probe 18 in real time through a large screen.

[0027] A repair method of an intelligent bio-pile repair technology equipment for a coal chemical pollution site, characterized in that it comprises the following steps:

[0028] Step 1, turn on the control valve 28, the flowmeter 29 and the Roots blower 9 through the central control system 7, and use the method of gradually increasing the air extraction flow to extract air, so as to ensure that the air path in the bio-pile 11 is uniform and avoid forming a preferential channel;

[0029] Step 2, during the air extraction process, the flow rate in the air extraction branch pipe 16 is monitored by the flow meter 29, the Roots blower 9 extracts the gas-liquid mixture into the bio-heap 11 through the air extraction main pipe 27 and the air extraction branch pipe 16, the extracted gas-liquid mixture enters the gas-liquid separator 8 and is separated, the separated gas is directly discharged after being filtered by the activated carbon tank 10, and the separated liquid flows into the leachate storage tank 1 for multiple uses;

[0030] Step 3, the soil gas probe 18 monitors the soil temperature, PH value, nitrogen, phosphorus and potassium content, humidity, pressure, oxidation-reduction potential and soil gas in the bio-heap 11 in real time, when the oxygen content of each soil monitoring point 31 is about 10%, the control valve 28, the flow meter 29 and the Roots blower 9 are closed by the central control system 7;

[0031] Step 4, the regulating valve 30 and the water supplement pump 5 are opened by the central control system 7, the microorganism nutrient agent in the medicine supplement tank 2 and the water in the water supplement tank 3 are uniformly injected into the bio-heap 11 through the dripper 22, the water content and the nitrogen, phosphorus and potassium content of the soil in the bio-heap 11 are monitored in real time by the soil gas probe 18, when the water content in the bio-heap 11 is higher than 10% and the carbon-nitrogen-phosphorus content ratio reaches 100:10:1, the regulating valve 30 and the water supplement pump 5 are closed by the central control system 7, and the injection of the microorganism nutrient agent and water into the bio-heap 11 is stopped;

[0032] Step 5, the microorganism nutrient agent penetrates into the gravel gas guide layer 13 and is collected in the leachate collection pipe 17, the microorganism nutrient agent in the leachate collection pipe 17 is collected into the leachate storage tank 1 by the extraction pump 4, and is recycled;

[0033] Step 6, when the oxygen content of each soil monitoring point 31 is about 10%, the air pump is opened by the central control system 7, air is introduced into the bio-heap 11 through the air inlet pipe 24 and the soil gas guide pipe 25, the air extraction and air introduction operation adjusts and improves the microorganism growth environment, and the purpose of repairing the contaminated land is achieved.

[0034] The above embodiment is only an example of the present application and is not used to limit the protection scope of the present application. Those skilled in the art can make simple changes or replacements on the basis of the above embodiment without departing from the technical concept of the present application, and the changes or replacements still belong to the protection scope of the present application.

Claims

1. An intelligent bioreactor remediation technology and equipment for coal chemical contaminated sites, characterized in that: The leachate storage tank (1), the replenishment tank (2) and the replenishment water tank (3) are connected in sequence. A replenishment water pump (5) is installed on the pipeline between the replenishment tank (2) and the replenishment water tank (3). The replenishment water pump (5) is connected to the nutrient water mixing inlet pipe (20) and can evenly inject microbial nutrient agents into the biomass (11). The replenishment water tank (3) is connected to the water storage tank through the water pump (6). The nutrient water mixing return pipe (26) is connected to the inlet end of the replenishment water pump (5) so that the uninjected microbial nutrient agents can flow back into the nutrient water mixing inlet pipe (20). The gas outlet of the gas-liquid separator (8) is connected to the activated carbon box (10) via a Roots blower (9). The inlet of the gas-liquid separator (8) is connected to the extraction main pipe (27), which is connected to several extraction branch pipes (16). The extraction branch pipes (16) are embedded at the bottom of the biomass (11). The Roots blower (9) extracts a gas-liquid mixture into the biomass (11) through the extraction main pipe (27) and the extraction branch pipes (16). The extracted gas-liquid mixture enters the gas-liquid separator (8) for further processing. Separation: The separated gas enters the activated carbon box (10) for filtration and discharge, and the separated liquid flows into the leachate storage tank (1) for recycling and reuse. Several air inlet pipes (24) are set on the top of the biomass (11). The air inlet pipes (24) are located above the air extraction branch pipes (16). The air inlet pipes (24) are connected to the soil air guide pipe (25). The soil air guide pipe (25) introduces air into the biomass (11) through an air pump. The Roots blower (9) and the air pump can perform air extraction and air exchange on the biomass (11). The gas-liquid separator (8) is also connected to the leachate storage tank (1), and the extraction pump (4) extracts the collected microbial nutrient agent back into the leachate storage tank (1) through the leachate collection pipe (17). The top of the bio-pile (11) is equipped with a drip irrigation pipe (32) and a dripper (22). The drip irrigation pipe (32) is connected to the nutrient water mixing inlet pipe (20). The dripper (22) can uniformly inject microbial nutrient agents into the bio-pile (11). The bottom of the bio-pile (11) is equipped with a leachate collection pipe (17) for collecting microbial nutrient agents. The bottom of the bio-pile (11) is also equipped with an exhaust branch pipe (16). The exhaust branch pipe (16) is connected to the exhaust main pipe (27) for extracting the gas-liquid mixture in the bio-pile (11). The bio-pile (11) is equipped with a soil gas monitoring point (31). The soil gas monitoring point (31) is equipped with a soil gas probe (18) for real-time monitoring of the oxygen content, water content and carbon-nitrogen-phosphorus ratio in the bio-pile (11). The central control system (7) is connected to the soil gas probe (18) via a signal line (21). The central control system (7) is also connected to the extraction pump (4), the water replenishment pump (5), and the Roots blower (9). By receiving the signal from the soil gas probe (18) and controlling the pump and blower to start and stop, the central control system (7) can uniformly inject and pump gas to the biomass (11). The central control system (7) is connected to the monitoring instrument and displays and stores the data monitored by the soil gas probe (18) on a large screen in real time.

2. The intelligent bioreactor remediation technology and equipment for coal chemical contaminated sites as described in claim 1, characterized in that: A regulating valve (30) is installed on the drip irrigation pipe (32), and a control valve (28) and a flow meter (29) are installed on the air extraction branch pipe (16). The central control system (7) is connected to the regulating valve (30), the control valve (28) and the flow meter (29) to control the opening and closing of the valve body and receive flow data.

3. The intelligent bioreactor remediation technology and equipment for coal chemical contaminated sites as described in claim 1, characterized in that: A gravel air-conducting layer (13) is provided at the bottom of the biomass (11). Geotextile (12) is provided between the biomass (11) and the gravel air-conducting layer (13). A leachate collection pipe (17) is provided through the gravel air-conducting layer (13) and the concrete impermeable foundation (15). The concrete impermeable foundation (15) is designed to be high on both sides and low in the middle. The leachate concentrates in the middle and enters the leachate collection pipe (17). Clean clay (14) is provided around the gravel air-conducting layer (13). A covering membrane (23) is provided above the biomass (11). Anchor sandbags (19) are pressed tightly around the covering membrane (23).

4. The intelligent bioreactor remediation technology and equipment for coal chemical contaminated sites as described in claim 1, characterized in that: The leachate collection pipe (17) has a slit on the side facing the biomass (11), with a slit width of 0.5 mm, a slit spacing of 1 cm, and a slit depth of 25 mm, for collecting leachate.

5. The intelligent bioreactor remediation technology and equipment for coal chemical contaminated sites as described in claim 1, characterized in that: The soil gas probe (18) includes a temperature sensor, a humidity sensor, a nitrogen, phosphorus and potassium probe, a pH probe, a redox potential meter, an oxygen content monitoring device, a carbon dioxide monitoring device, and a gas / liquid vortex flow meter, which monitors the soil temperature, pH value, nitrogen, phosphorus and potassium content, humidity, pressure, redox potential, and soil gas of the biomass (11) in real time.

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