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CN-119327855-B - Complete set of organic contaminated soil restoration and improvement equipment

CN119327855BCN 119327855 BCN119327855 BCN 119327855BCN-119327855-B

Abstract

The invention belongs to the technical field of soil treatment, and particularly relates to complete organic pollution soil restoration and improvement equipment. The technical scheme is that the complete set of organic pollution soil remediation and improvement equipment comprises a soil pollution pretreatment device, wherein the soil pollution pretreatment device is connected with a soil pollution pyrolysis treatment device through a pipeline, the soil pollution pyrolysis treatment device is respectively connected with a soil improvement treatment device, a tail gas treatment device and an eluent treatment device, and the soil improvement treatment device is connected with a soil deep treatment device. The invention provides complete organic pollution soil restoration and improvement equipment which has high efficiency and low cost and reduces secondary pollution.

Inventors

  • LI WEI
  • WANG XIANZHI
  • DAI XIAOQIANG
  • GAO CHANGLING
  • YANG QIAN

Assignees

  • 中国五冶集团有限公司

Dates

Publication Date
20260508
Application Date
20240902

Claims (7)

  1. 1. The complete set of organic pollution soil remediation and improvement equipment is characterized by comprising a soil pollution pretreatment device (1), wherein the soil pollution pretreatment device (1) is connected with a soil pollution pyrolysis treatment device (2) through a pipeline, the soil pollution pyrolysis treatment device (2) is respectively connected with a soil improvement treatment device, a tail gas treatment device (4) and an eluent treatment device (5), and the soil improvement treatment device is connected with a soil deep treatment device; The soil pollution pretreatment device (1) comprises a waste-containing soil feed inlet (11), a waste downward extrusion cavity (12), a soil downward extrusion cavity (13) and a waste-removing soil discharge outlet (14) which are sequentially connected from top to bottom, wherein the discharge outlet is connected with a soil pollution pyrolysis treatment device (2) through a soil eccentric reducing pipe (29), the top of the soil downward extrusion cavity (13) is connected with an arched waste grid (15), an isolation cylinder (16) is connected in the soil downward extrusion cavity (13), a lifting stirring device (17) is arranged in the isolation cylinder (16), a liquid pipeline (18) for spraying leaching liquid and blending liquid is arranged at the lower part of the isolation cylinder (16) in an extending manner, and a micro-bubble liquid spraying device (19) is connected at the lower part of the lifting stirring device (17); A waste step plate (121) is arranged between the waste downward extrusion cavity (12) and the soil downward extrusion cavity (13), a plurality of waste discharge pipelines (122) are connected to the waste step plate (121), a waste downward extrusion upper spiral (123) and a waste downward extrusion lower spiral (124) are arranged on the inner wall of the waste downward extrusion cavity (12), the height of the spiral teeth of the waste downward extrusion upper spiral (123) and the height of the spiral teeth of the waste downward extrusion lower spiral (124) are arranged, a vibrator (151) is arranged on the waste grid (15), and the waste grid (15) is connected to the top of the soil downward extrusion cavity (13) through a flexible connecting device (152); The eluent treatment device (5) comprises a mixer (51), a spiral contact reactor (52) and a water storage tank (53), wherein the mixer (51) is connected with the soil pollution pyrolysis treatment device (2) through an eluent discharge pipe (28), the mixer (51) is connected with the lower part of the spiral contact reactor (52) through a pipeline, the inner surface of the spiral contact reactor (52) is loaded with active materials, and the upper part of the spiral contact reactor (52) is connected with the water storage tank (53); The reactor comprises a reactor body (552), a spiral contact reactor (52) is arranged in the reactor body (552), a synthesis power motor (553) is arranged on the synthesis support (551), the output end of the synthesis power motor (553) is connected with a central column (522) of the spiral contact reactor (52), and active material slurry is added in the reactor body (552).
  2. 2. The complete set of organic contaminated soil remediation and improvement equipment according to claim 1, wherein the leaching solution comprises 0.5-1.5% of surfactant, 0.3-0.8% of chelating agent, 7-8% of pH regulator and 0.1-0.3% of biosurfactant, and the temperature of the leaching solution is 30-35 ℃.
  3. 3. The complete set of organic contaminated soil remediation and improvement equipment according to claim 1, wherein the soil contaminated pyrolysis treatment device (2) comprises a pyrolysis tank (21), a soil conveying pump (22) is connected to the bottom of the pyrolysis tank (21), the soil conveying pump (22) is connected with the soil contaminated pretreatment device (1) through a soil eccentric reducing pipe (29), a spiral stirrer (23) and a heating rod (24) are arranged in the pyrolysis tank (21), a liquid collecting section (25) is connected to the top of the pyrolysis tank (21), the top of the liquid collecting section (25) is connected with a tail gas treatment device (4) through an exhaust gas discharge pipe (26), a feeding track (27) is connected to the upper portion of the pyrolysis tank (21), the other end of the feeding track (27) is connected with the soil modified treatment device, and an eluent discharge pipe (28) of the liquid collecting section (25) is connected with the eluent treatment device (5).
  4. 4. The complete set of organic contaminated soil remediation and improvement equipment according to claim 3, wherein the spiral stirrer (23) is externally connected with a positive electrode of a power supply, an anode material is coated on the spiral stirrer (23), and the anode material is one of ruthenium oxide or iridium oxide layers, boron-doped diamond, lead dioxide, snO 2 and Ti/SnO 2 which are made of titanium-based materials.
  5. 5. The complete set of organic contaminated soil remediation and improvement equipment according to claim 1, wherein the soil remediation and improvement device comprises a soil remediation processor (31), an improvement stirring mechanism (32) is installed in the soil remediation processor (31), the soil remediation processor (31) is connected with a soil contaminated pyrolysis treatment device (2) through a feeding track (27), the soil advanced treatment device comprises a negative pressure reactor (33), a reaction stirring mechanism (34) is installed in the negative pressure reactor (33), an improvement soil discharge pipe (311) for conveying improved soil into the negative pressure reactor (33) is connected to the soil remediation processor (31), a negative pressure tank (35) is connected to the negative pressure reactor (33) through a pipeline, a negative pressure machine (36) is connected to the negative pressure tank (35) through a pipeline, and organic matters, inorganic materials, a regulator, nitrogen, phosphorus and potassium fertilizers and trace element fertilizers are added to the feeding track (27).
  6. 6. The complete organic contaminated soil remediation and improvement apparatus according to claim 5, wherein the soil deep treatment device further comprises a cover opening mechanism (37) for opening and closing a cover body of the negative pressure reactor (33), the cover opening mechanism (37) comprises a lifting frame (371), a lifting motor (372) is mounted on the lifting frame (371), a U-shaped card (383) for connecting the cover body of the negative pressure reactor (33) is connected to the lifting motor (372), one side of the cover body of the negative pressure reactor (33) is hinged to a main body of the negative pressure reactor (33), and a lifting handle (331) matched with the U-shaped card (383) and a fixed connecting piece (332) detachably connected with the main body of the negative pressure reactor (33) are fixed to the other side of the cover body of the negative pressure reactor (33).
  7. 7. The complete set of organic contaminated soil remediation and improvement equipment according to claim 1, wherein the tail gas treatment device (4) comprises a tail gas treatment tank body (41), a plurality of layers of contactors (42) are arranged in the tail gas treatment tank body (41), the interior of the tail gas treatment tank body (41) is divided into a plurality of waste gas reaction chambers (43) by the plurality of layers of contactors (42), the waste gas reaction chambers (43) are filled with water, photocatalytic materials and catalytic materials are coated on the surfaces of the contactors (42), a waste gas exhaust pipe (44) is connected to the bottom of the tail gas treatment tank body (41), and the soil contaminated pyrolysis treatment device (2) is connected with the waste gas exhaust pipe (44) through a waste gas exhaust pipe (26).

Description

Complete set of organic contaminated soil restoration and improvement equipment Technical Field The invention belongs to the technical field of soil treatment, and particularly relates to complete organic pollution soil restoration and improvement equipment. Background Organic pollutants enter the soil through leakage, infiltration and the like, and environmental pollution is caused. These organic substances may be toxic, carcinogenic or persistent, and pose a threat to the ecosystem and human health. The treatment of polluted slurry is an important subject in the field of environmental protection, and directly affects the water, soil and surrounding ecological environment. At present, the soil pollution repairing method mainly comprises physical, chemical and biological repairing technologies. However, these conventional repair methods have the following main problems: first, the traditional method is inefficient, which usually takes a long time to significantly reduce the concentration of soil pollutants, and is difficult to meet the urgent demands in practical applications. Secondly, the cost is high, and a plurality of repairing methods need expensive equipment and reagents, so that the overall repairing cost is high, and the large-scale application is limited. Thirdly, secondary pollution, wherein some methods may generate secondary pollution in the repairing process, such as chemical reagent residue or waste liquid treatment not reaching the standard, and further pollute the environment. Therefore, there is a need for an efficient, environmentally friendly and cost effective method for restoring contaminated soil to quality planting soil that can cope with various types of organic and inorganic pollutants and reduce the risk of secondary pollution. Disclosure of Invention In order to solve the problems in the prior art, the invention aims to provide complete organic pollution soil restoration and improvement equipment which has high efficiency, low cost and reduced secondary pollution. The technical scheme adopted by the invention is as follows: The utility model provides a complete sets of organic pollution soil restoration improvement equipment, includes soil pollution preprocessing device, soil pollution preprocessing device has soil pollution pyrolysis treatment device through the pipe connection, and soil pollution pyrolysis treatment device is connected with soil improvement processing apparatus, tail gas processing apparatus and eluent processing apparatus respectively, and soil improvement processing apparatus is connected with soil advanced treatment device. The polluted soil is sent into a soil pollution pretreatment device for pretreatment, and the pretreated soil is sent into a soil pollution pyrolysis treatment device for pyrolysis reaction. And (3) delivering the pyrolyzed soil to a soil improvement treatment device for improvement treatment, delivering the improved soil to a soil deep treatment device for negative pressure deep treatment, and discharging the deeply treated soil. And sending the pyrolyzed eluent into an eluent treatment device for treatment, and storing or discharging after the treatment. And delivering the pyrolyzed waste gas to a tail gas treatment device for treatment, and discharging the treated tail gas. The soil remediation and improvement equipment disclosed by the invention can be used for carrying out soil pretreatment and pyrolysis treatment, improving and deeply treating the pyrolyzed soil, and respectively treating eluent and waste gas after pyrolysis, so that gas, liquid and solid after pyrolysis are fully treated. The complete set of organic pollution soil restoration and improvement equipment can improve the soil treatment efficiency, reduce the operation cost and secondary pollution, and has important application value and wide application prospect. As the preferable scheme of the invention, the soil pollution pretreatment device comprises a waste-containing soil feed inlet, a waste downward extrusion cavity, a soil downward extrusion cavity and a waste-removing soil discharge outlet which are sequentially connected from top to bottom, wherein the discharge outlet is connected with a soil pollution pyrolysis treatment device through a soil eccentric reducing pipe, the top of the soil downward extrusion cavity is connected with an arched waste grid, an isolation cylinder is connected in the soil downward extrusion cavity, a lifting stirring device is arranged in the isolation cylinder, the lower part of the isolation cylinder stretches into a liquid pipeline for spraying eluent and blended liquid, and the lower part of the lifting stirring device is connected with a microbubble liquid spraying device. The arched waste grid blocks the waste in the soil so that only the soil passes through the waste grid and the waste slides along the arched waste grid to the inner wall of the downward extrusion chamber. The waste is extruded downwards on the inner wall of t