CN212349865U

CN212349865U - Device for restoring petroleum hydrocarbon organic matter contaminated soil

Info

Publication number: CN212349865U
Application number: CN202021685121.1U
Authority: CN
Inventors: 卓剑锋
Original assignee: Fujian Anguan Environment Technology Co ltd
Current assignee: Fujian Anguan Environment Technology Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-01-15
Anticipated expiration: 2030-08-13

Abstract

The utility model discloses a be used for prosthetic device of petroleum hydrocarbon organic matter contaminated soil, at least including the device body, the inside of device body can be freely loaded and unloaded be provided with transport module, soil and clean module, multistage screening module, waste water treatment retrieval and utilization module, oxidation and dehydration module and electrolytic oxidation generator module. The utility model discloses on the basis based on chemistry drip washing and classified screening, combine a plurality of water treatment technologies such as electrolytic flocculation and electrolytic oxidation, wash through the water that adopts different electrolysis forms to handle in the cleaning process at different soil particle diameters to in the prerequisite of not using the drip washing medicament, restore the soil of multiple organic pollution.

Description

Device for restoring petroleum hydrocarbon organic matter contaminated soil

Technical Field

The utility model relates to a prosthetic technical field of petroleum hydrocarbon organic matter contaminated soil specifically is a be used for prosthetic device of petroleum hydrocarbon organic matter contaminated soil.

Background

During the production, storage and transportation, refining and processing of petroleum, due to accidents, abnormal operation, maintenance and the like, organic substances of petroleum hydrocarbon overflow and are discharged, for example, blowout accidents in the oil field development process, leakage of oil pipelines and oil storage tanks and the like can cause massive overflow of petroleum hydrocarbon, and under the condition that the recovery of the overflowing petroleum is difficult, the residual part can pollute soil, underground water and the like.

Petroleum is a complex composed of hundreds of compounds, and after petroleum hydrocarbons enter soil, the composition and structure of organic matters in the soil can be changed, soil pores are blocked, and the permeability of the soil is influenced; meanwhile, as the petroleum contains various reaction groups, the petroleum can be combined with inorganic nitrogen, phosphorus and the like to limit nitrification and dephosphorylation, which can generate adverse effect on the production of plants and even cause the death of the plants; petroleum hydrocarbons may also remain in the fruit parts of plants, entering the food chain through food, causing human and animal hazards; meanwhile, the soil pollution also invades underground water, and drinking water resources and underground water resources enter through the underground water, so that the health of human life is harmed.

The petroleum hydrocarbon polluted soil remediation technology mainly comprises a biological remediation method and a physical and chemical method. Bioremediation techniques are the metabolism of certain microorganisms to break down pollutants; the bioremediation technology is generally suitable for remediation of soil with small pollution degree, microorganisms are generally not easy to survive under the condition of high pollution degree, soil pollutants are difficult to effectively remove, and the bioremediation technology has the defects of sensitivity to soil environment, long remediation period, poor stability and the like.

The physical-chemical method has the characteristics of large treatment capacity, wide application range, quick response and the like, and is a common method in practical application; at present, a thermal treatment desorption method and a chemical leaching method are mainly adopted; the heat treatment method is generally used for treating the soil polluted by petroleum hydrocarbon with high pollution concentration or oily sludge, can recover the petroleum hydrocarbon, quickly realizes desorption and does not damage other substances of the soil, but cannot be widely applied due to the defects of high investment cost, high operating cost and the like; the chemical leaching method is most common in practical application, the method is based on water leaching, and petroleum hydrocarbon in soil is precipitated, oxidized or degraded by adding various chemical agents in the leaching process; thereby transferring the petroleum hydrocarbon pollution in the soil into the wastewater, and treating the wastewater again to finally realize the removal of the petroleum hydrocarbon.

The existing chemical leaching method has the characteristics of large consumption of chemical agents, large amount of clean water sources, incomplete leaching, residue and secondary pollution; therefore, there is a need to develop a device for remediating petroleum hydrocarbon organic matter contaminated soil that can save water, save chemicals, carry no secondary pollution and residual chemical leaching, and promote the advancement of petroleum hydrocarbon soil remediation technologies.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be used for prosthetic device of petroleum hydrocarbon organic matter contaminated soil to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a be used for prosthetic device of petroleum hydrocarbon organic matter contaminated soil, includes the device body at least, the inside of device body can be freely loaded and unloaded be provided with transport module, soil scrubbing module, multistage screening module, waste water treatment retrieval and utilization module, oxidation and dehydration module and electrolytic oxidation generator module.

As a further aspect of the present invention: the waste water treatment retrieval and utilization module includes the pipe-line filter who communicates with multistage screening module at least, pipe-line filter's one end has the delivery pump through the pipe connection, the one end of delivery pump has modular electric flocculation through the pipe connection, modular electric flocculation's one end is connected with the earth filter, the one end of earth filter is connected with the filtration pump, the one end of filtration pump is connected with precision filter.

As a further aspect of the present invention: the modularized electric flocculation comprises an upper electric flocculation module, a lower electric flocculation module and a direct current power supply which is electrically connected with the two electric flocculation modules respectively.

As a further aspect of the present invention: the electrolytic oxidation generator module at least comprises a horizontal filter, a disc type adsorption filter and an electrolytic water generator which are connected in sequence.

As a further aspect of the present invention: the inside of the horizontal filter is provided with a first filter element for intercepting residual slurry in the wastewater, and the inside of the disc-type adsorption filter is provided with a second filter element for adsorbing residual reducing substances or pollutants in the water.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the utility model discloses on the basis based on chemistry drip washing and classified screening, combine a plurality of water treatment technologies such as electrolytic flocculation and electrolytic oxidation, wash through the water that adopts different electrolysis forms to handle in the cleaning process at different soil particle diameters to in the prerequisite of not using the drip washing medicament, restore the soil of multiple organic pollution.

2) In view of the application problem of the method, the utility model discloses ingenious has set up the transport module, the soil that can realize the combination of free formula, loading and unloading and transportation and has scrubbed module, multistage screening module, waste water treatment retrieval and utilization module, oxidation and dehydration module and electrolytic oxidation generator module in the inside of the device body of integration. So as to be convenient for the on-site remediation of the petroleum hydrocarbon polluted soil with different concentrations and different pollution sources in different areas.

Drawings

Fig. 1 is a schematic overall structure diagram of a device for remediating petroleum hydrocarbon organic matter contaminated soil.

FIG. 2 is a schematic view of the whole structure of the reclaimed wastewater recycling module of the present invention.

Fig. 3 is a schematic diagram of the overall structure of the middle electrolytic oxidation generator module of the present invention.

The reference numerals in the figures have the following meanings:

100. a device body; 110. a delivery module; 120. a soil scrubbing module; 130. a multi-stage screening module; 140. a wastewater treatment and reuse module; 141. a pipeline filter; 142. a delivery pump; 143. modularization electrocoagulation; 144. a mud filter; 145. a filter pump; 146. a precision filter; 150. an oxidation and dehydration module; 160. an electrolytic oxidation generator module; 161. a horizontal filter; 162. a disc-type adsorption filter; 163. an electrolyzed water generator; 1431. an electrocoagulation module; 1432. a DC power supply; 1611. a first filter element; 1621. a second filter element.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, in the present embodiment, an apparatus for remediating petroleum hydrocarbon organic contaminated soil at least comprises an apparatus body 100, and a conveying module 110, a soil scrubbing module 120, a multi-stage screening module 130, a wastewater treatment and recycling module 140, an oxidation and dehydration module 150, and an electrolytic oxidation generator module 160 are freely assembled, loaded, unloaded, and transported inside the apparatus body 100. So as to be convenient for the on-site remediation of the petroleum hydrocarbon polluted soil with different concentrations and different pollution sources in different areas.

Specifically, referring to fig. 2, the wastewater treatment and recycling module 140 at least includes a pipeline filter 141 communicated with the multistage screening module 130, one end of the pipeline filter 141 is connected with a delivery pump 142 through a pipeline, one end of the delivery pump 142 is connected with a modular electrocoagulation 143 through a pipeline, one end of the modular electrocoagulation 143 is connected with a soil filter 144, one end of the soil filter 144 is connected with a filtration pump 145, one end of the filtration pump 145 is connected with a precision filter 146, and the modular electrocoagulation 143 includes an upper electrofloculation module 1431 and a lower electrofloculation module 1431 and a dc power supply 1432 electrically connected with the two electrofloculation modules 1431 respectively.

It should be noted that, in practical application, the treatment efficiency of each module can be adjusted according to different factors such as pollution degree; if the soil polluted by petroleum hydrocarbon contains a large amount of crude oil, more floating oil is separated out in the scrubbing process, and a floating oil recovery device can be added in the wastewater treatment and reuse module 140 to recover the floating oil.

On the basis of the above structure, as shown in fig. 3, the electrolytic oxidation generator module 160 at least includes a horizontal filter 161, a disc-type adsorption filter 162 and an electrolytic water generator 163 connected in sequence. The horizontal filter 161 is provided inside with a first filter element 1611 for intercepting residual slurry in the wastewater, and the disc-type adsorption filter 162 is provided inside with a second filter element 1621 for adsorbing residual reducing substances or pollutants in the water, so as to ensure the electrolysis water inlet index.

The operation principle of the electrolytic oxidation generator module 160 is as follows:

the electrolytic oxidation generator module 160 is based on an electrolytic oxidation water technology, and waste water after slurry oxidation and dehydration is absorbed and filtered to be used as electrolytic raw water, the raw water is changed into electrolytic water rich in oxidation ions through an electrolytic reaction, and the electrolytic water is discharged from a water outlet at the bottom of the electrolytic water generator 163, mixed with fine slurry and enters the next circulation.

The utility model discloses a concrete working procedure is as follows:

firstly, soil is crushed and then mixed with clean water in a certain proportion to form slurry, then the slurry is guided into a soil scrubbing module 120 through a conveying module 110, petroleum hydrocarbon on the surface layer of large-particle-size particles in the soil is washed out into the slurry in the scrubbing process, and then the scrubbed slurry is guided into a multi-stage screening module 130, so that all soil components with large particle sizes (larger than 1 mm) are screened out; and then the residual slurry is physically precipitated, the precipitated upper wastewater contains petroleum hydrocarbon, the upper wastewater is subjected to wastewater treatment by the wastewater treatment and reuse module 140, the petroleum hydrocarbon is degraded after the wastewater is treated, and then the clear water returns to the front end again to be mixed with the crushed soil.

The settled mud, due to its too small particle size, may have entered the interior of the soil particles and removal of the contamination cannot be achieved by means of hydraulic scrubbing alone. The precipitated slurry enters an oxidation and dehydration module 150, high-oxidizing water generated by electrolytic oxidation is fully mixed with the precipitated slurry through a jet flow releaser in an oxidation tank of the oxidation and dehydration module 150, after a certain oxidation time is met, petroleum hydrocarbon in the slurry is oxidized into CO2 by oxidizing substances, then the slurry is subjected to filter pressing and dehydration to realize the whole restoration, and the high-oxidizing water enters an electrolytic oxidation generator module 160 again for preparation after being oxidized.

To sum up, the utility model discloses on the basis based on chemistry drip washing and classified screening, combine multiple water treatment techniques such as electrolytic flocculation and electrolytic oxidation, wash through the water that adopts behind the different electrolysis form processing in the cleaning process at different soil particle diameters to be convenient for under the prerequisite that does not use the drip washing medicament, restore the soil of multiple organic pollution.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A device for restoring petroleum hydrocarbon organic matter contaminated soil is characterized in that: the device at least comprises a device body (100), wherein a conveying module (110), a soil scrubbing module (120), a multi-stage screening module (130), a wastewater treatment and reuse module (140), an oxidation and dehydration module (150) and an electrolytic oxidation generator module (160) are freely and detachably arranged in the device body (100).

2. The device for remediating petroleum hydrocarbon organic matter contaminated soil as recited in claim 1, wherein: waste water treatment retrieval and utilization module (140) include at least pipe-line filter (141) with multistage screening module (130) intercommunication, pipe-line filter (141)'s one end has delivery pump (142) through the pipe connection, the one end of delivery pump (142) has modularization electric flocculation (143) through the pipe connection, the one end of modularization electric flocculation (143) is connected with earth filter (144), the one end of earth filter (144) is connected with filter pump (145), the one end of filter pump (145) is connected with precision filter (146).

3. The device for remediating petroleum hydrocarbon organic matter contaminated soil as recited in claim 2, wherein: the modularized electric flocculation module (143) comprises an upper electric flocculation module (1431) and a lower electric flocculation module (1431) and a direct current power supply (1432) which is electrically connected with the two electric flocculation modules (1431) respectively.

4. The device for remediating petroleum hydrocarbon organic matter contaminated soil as recited in claim 1, wherein: the electrolytic oxidation generator module (160) at least comprises a horizontal filter (161), a disc type adsorption filter (162) and an electrolytic water generator (163) which are connected in sequence.

5. The device for remediating petroleum hydrocarbon organic matter contaminated soil as recited in claim 4, wherein: the horizontal filter (161) is internally provided with a first filter element (1611) for intercepting residual slurry in the wastewater, and the disc-type adsorption filter (162) is internally provided with a second filter element (1621) for adsorbing residual reducing substances or pollutants in the water.