TW201627231A - Emulsion solution for treating environment and method for fabricating the same, method for treating polluted environment and system for treating environment - Google Patents

Abstract

An emulsion solution for treating an environment and a method for fabricating the same, a method for treating a polluted environment, and a system for treating an environment are provided. The emulsion solution includes an nonionic surfactant, an oily solute, and water. The nonionic surfactant includes at least one selected from a group consisting of a polyoxyethylene alkyl ether, a polyoxyethylene alkyl phenyl ether, a polyoxyethylene - polyoxypropylene alcohol, a polyoxyethylene fatty acid ester, a tertiary amine oxide, and any combination thereof. The oily solute includes at least one selected from a group composed of a soybean oil, a peanut oil, a coconut oil, an olive oil, a raisin seed oil, a cottonseed oil, a heliotrope oil, a palm oil, a food-grade oil and their mixture.

Description

Emulsion liquid for environmental remediation and preparation method thereof, remediation method for polluted environment and environmental remediation system

The application relates to an emulsified stock solution and a preparation method thereof, in particular to an emulsified stock solution for environmental remediation, a preparation method thereof, a remediation method for a polluted environment, and an environmental remediation system.

In soil and sediment, hydrophobic substances are usually the most difficult to remove or recover. In terms of sediment pollution, hydrophobic substances are easily reduced in solubility due to their hydrophobic properties and adsorbed in soil or sediment. The organic matter becomes a persistent organic pollutant. Therefore, the river sediment remediation system is an important part of environmental protection work. At present, all countries have different technologies to solve related remediation problems. At present, the methods for remediation of river sediments commonly found in various countries include methods such as sputum method, water burial method, and underwater burial method, which are summarized as follows.

The dredging method is to remove the contaminated bottom mud by mechanical tools, and then transport the excavated bottom mud to a qualified processing facility for treatment or after a series of treatments as final marine disposal (Palermo et al., 2008). However, when the excavation is carried out, it is easy to cause the high-concentration concentration of the sediment to rise and migrate with the river to the downstream and side, causing the pollution area to expand.

The confined disposal facility constructs a reinforced concrete structure near the site of the highly polluted sediment, which is closed after being buried, that is, the contaminated sediment is no longer excavated, but the final disposal is carried out near the contaminated site. Not treated (Netzband, 2002), will cause perpetual river and sea pollution.

Confined aquatic disposal is to dig a groove in the sediment below the surface of the water, to put the contaminated sediment into the groove, and cover it with clean sand, stones, etc. (Thomas and Concord, 2005). It does not need to be disposed of in the highlands like the water burial method, but construction materials must be used on land to be buried. However, the disposal of highland land on the land may cause the pollutants to have greater contact with human skin, further endangering human health and volatility due to the physical and chemical properties of the pollutants, or leakage of water, causing groundwater to be contaminated. Upland cotton treatment also increases the risk of highway traffic accidents that can result in injury or death.

The above-mentioned conventional sediment treatment methods have their own limitations or there is a risk of secondary pollution. For the special environment of river terrain, such as Taiwan, the situation of river sediment pollution is facing an increasingly serious trend. Most of the pollution types include heavy metals, polychlorinated biphenyls (PCBs), and polybrominated diphenyl ethers (PBDEs). Polycyclic aromatic hydrocarbons (PAHs), etc., if the above-mentioned conventional sediment remediation technology is directly used, the effect may be poor and may cause secondary pollution. Therefore, how to effectively remediate contaminated sediments is the direction of the industry.

In view of this, the present application proposes an emulsified stock solution for environmental remediation, a preparation method thereof, a remediation method for a polluted environment, and an environmental remediation system, which can degrade pollutants, break down a bottleneck of biodegradation, and can be recovered by the above environmental remediation system. Or remove the hydrophobic substances in the soil to achieve the effect of protecting the environment and ecology.

One aspect of the present invention is to provide an emulsified stock solution for environmental remediation, which comprises a nonionic surfactant, an oil solute, and water. The nonionic surfactant contains from polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene-polyoxypropenol, polyoxyethylene fatty acid ester, trialkylamine oxide and mixtures thereof. Forming at least one of the selected groups. The oil solute contains at least one selected from the group consisting of soybean oil, peanut oil, coconut oil, olive oil, grape seed oil, cottonseed oil, sunflower oil, palm oil, food grade oil, and mixtures thereof.

In one embodiment, the emulsified stock solution for environmental remediation of the present invention is a non-nano-doped (o/w) oil-in-water type, and the content of the oil solute is greater than 40%.

In one embodiment, the surfactant comprises polyethylene glycol, polyoxyethylene sorbitan, polyoxyethylene sorbitan monooleate, hexaol laurate, and mono-9-octadecenoic acid dehydration. The sorbitol ester comprises at least one selected from the group consisting of mixtures thereof.

In one embodiment, the emulsified liquid system for environmental remediation of the present invention further comprises at least one of an oil-water fusion agent, an emulsion stabilizer, an emulsion accelerator, an antioxidant, or a combination thereof for promoting emulsification between oil solute and water. effect.

In one embodiment, the oil particles of the emulsified stock solution for environmental remediation of the present invention have an average particle diameter ranging from 1 nm to 1000 nm.

In one embodiment, the oil particles of the emulsified stock solution for environmental remediation of the present invention have an average particle diameter in the range of 300 nm to 400 nm.

Another aspect of the present invention provides a method for preparing an emulsified stock solution for environmental remediation, which comprises: 15 to 75 parts by weight of water, 25 to 55 parts by weight of an oil solute, and the remaining part of a nonionic surfactant; The mixture was thoroughly stirred and mixed to prepare an emulsified stock solution. The nonionic surfactant contains from polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene-polyoxypropenol, polyoxyethylene fatty acid ester, trialkylamine oxide and mixtures thereof. Forming at least one of the selected groups. The oil solute contains at least one selected from the group consisting of soybean oil, peanut oil, coconut oil, olive oil, grape seed oil, cottonseed oil, sunflower oil, palm oil, food grade oil, and mixtures thereof.

A further aspect of the present invention provides a method for remediating a contaminated environment, which comprises: injecting the aforementioned emulsified stock solution for environmental remediation into a contaminated environment and thoroughly stirring the contaminated environment including pollutants, soil, sediment, Natural water or groundwater. Next, the demulsifier is added and thoroughly stirred, and the demulsifier is an ionic demulsifier or a nonionic demulsifier. Finally, the oil slick is recovered.

In one embodiment, the ionic demulsifier is at least one selected from the group consisting of sodium carbonate, calcium carbonate, copper sulfate, magnesium sulfate, aluminum sulfate, sodium chloride, calcium chloride, sodium benzoate, and combinations thereof.

In one embodiment, the nonionic demulsifier is at least one selected from the group consisting of SP type demulsifiers, AP type demulsifiers, AE type demulsifiers, AR type demulsifiers, and mixtures thereof.

In an embodiment, prior to the step of recovering the oil slick, the air is further introduced to sufficiently perform aeration.

In one embodiment, the aeration system is a multi-stage aeration.

In one embodiment, the method of recovering the oil slick includes at least one selected from the group consisting of surface floatation, stripping, mechanical oil scraping, and combinations thereof.

Yet another aspect of the present invention is to provide an environmental remediation system that includes a remediation treatment unit, an inflow passage and/or an outflow passage, and a mixing device. The remediation processing unit includes at least a rectification tank having an accommodation space for accommodating at least the object to be rectified, the environmental remediation agent, the air, the agent or the reaction product. The inflow passage and/or the outflow passage are respectively detachably connected to the rectification tank body, and can be used for injecting or discharging the rectification object, the environmental remediation agent, the air, the agent, and the reaction product and the oil slick. Discharge. The mixing device may be disposed in the rectification tank to sufficiently mix the rectification object, the environmental remediation agent, the air, or the agent in the accommodating space. The environmental remediation agent is prepared by the aforementioned emulsified stock solution for environmental remediation.

In an embodiment, the environmental remediation system further comprises a remediation control unit for controlling the injection and discharge of the rectification object, the environmental remediation agent, the air, or the agent relative to the remediation treatment unit, and the reaction product, the oil slick The remediation control unit includes an oil recovery controller relative to the discharge of the remediation unit.

In an embodiment, the remediation control unit further includes a detecting unit for detecting the environmental remediation agent, the air, or the agent, the reaction product, the oil slick of the remediation unit, and sending a detection signal to the remediation control unit.

In order to make the various aspects and the aspects of the invention described above more readily apparent, the detailed description will be described in the accompanying drawings.

The above and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. The directional terms mentioned in the following embodiments, such as upper, lower, left, right, front or rear, etc., are only used to refer to the directions of the accompanying drawings. Therefore, the directional terms are used for illustration only and are not intended to limit the invention.

The following describes various embodiments of the emulsified stock solution for environmental remediation, the preparation method thereof, the remediation method of the contaminated environment, and the environmental remediation system.

According to one aspect of the present invention, an embodiment of an emulsified stock solution for environmental remediation is proposed, which is suitable for use in remediation of a contaminated environment. In this embodiment, the emulsified stock solution for environmental remediation includes at least a nonionic surfactant, an oil solute, and water.

The physical properties of the emulsified stock solution for environmental remediation according to this embodiment are as follows. The average particle diameter of the oil particles of the emulsified stock solution may be in the range of 1 nm to 1000 nm; preferably 300 nm to 400 nm. range. Further, the emulsified stock solution may be a non-nano (o/w) oil-in-water type. The oil-in-water type refers to an emulsified stock solution in which water is a dispersion and oil droplets are present in water. However, the embodiments of the present invention are not limited thereto.

In this embodiment, the nonionic surfactant is not dissociated in water, and is a hydrocarbon having a hydroxyl group (—OH) or an ether bond ( R—O—R′) as a hydrophilic group and having 8 to 18 carbon atoms. The chain is a lipophilic structural molecule. The nonionic surfactant has a hydrophile-lipophile balance (HLB) of between 1 and 24. Since the nonionic surfactant is not present in the ionic state in the solution, it has high stability, is not easily affected by the presence of strong electrolytes, and is not easily affected by acids and alkalis, and can be mixed with other types of surfactants. Good compatibility, good solubility in various solvents, no strong adsorption on solid surfaces.

For example, the nonionic surfactant contains polyoxyethylene alkyl ether, polyoxyethylene tridecyl ether, polyoxyethylene oleyl ether, polyoxyethylene cetyl ether, polyoxyethylene lauryl ether, poly Oxyethylene vinyl stearyl ether, polyoxyethylene alkyl phenyl ether, polyethylene glycol lauryl ether, polyethylene glycol cetyl ether, polyethylene glycol stearyl ether, alkyl phenol polyoxyl Polyoxyethylenes such as vinyl ether, polyoxyethylene-polyoxypropylene alcohol, polyoxyethylene fatty acid ester, high carbon fatty alcohol polyoxyethylene ether, trialkylamine oxide, surfactant of the following Table 1, and mixtures thereof Forming at least one of the selected groups. A preferred nonionic surfactant comprises at least one selected from the group consisting of polyoxyethylenes, polyols, alkyl ketamines, and mixtures thereof. However, it is not limited to this in the field of the invention. The nonionic surfactant of the polyol type comprises polyethylene glycol, polyoxyethylene sorbitan, polyoxyethylene sorbitan monooleate, hexaol laurate, mono-9-octadecenoic acid The sorbitan esters and at least one of the mixture selected from the group consisting of the mixture. 【Table 1】

For another example, the oil solute contains at least one selected from the group consisting of soybean oil, peanut oil, coconut oil, olive oil, grape seed oil, cottonseed oil, sunflower oil, palm oil, food grade oil, and mixtures thereof. . However, it is not limited thereto in the field of the present invention, and animal oil, vegetable oil, mineral oil, or synthetic fat may be used as the oil solute. In one embodiment, the preferred oil solutes are, for example, soybean oil.

Preferably, the emulsified stock solution may further comprise an oil-water fusion agent, an emulsion stabilizer or an emulsification accelerator to enhance the emulsification between the oil solute and the water, increase the speed of oil-water fusion, and stabilize the composition properties of the emulsion. . However, the present invention is not limited thereto, and may further contain an antioxidant, a deodorant, a disinfectant, a microbial nutritional supplement, or the like. Among them, the antioxidant can prevent oxidation of the emulsified stock solution and rancidity. For example, the antioxidant may include dibutyl hydroxyl toluene (BHT), butylated hydroxyl anisole (BHA) or other substances having similar functions but not causing environmental pollution.

In addition, in order to make the residual unrecovered emulsified liquid suitable for microbial growth, nitrogen, phosphorus and other trace elements, so-called microbial nutritional supplements, may be additionally added to the emulsified stock solution. However, it must be determined according to the content of microbial nutrient additives contained in the environmental medium to be rectified. If the environmental medium does not contain any microbial nutrient additives, microbial nutrient additives must be added to the environmental medium; otherwise, no need to add .

According to another aspect of the present invention, an embodiment of a method for preparing an emulsified stock solution for environmental conditioning of the above emulsified stock solution is proposed.

In this embodiment, the preparation method of the emulsified stock solution for environmental remediation comprises at least: mixing 15 to 75 parts by weight of water, 25 to 55 parts by weight of the oil solute, and the remaining part of the nonionic surfactant, and utilizing The agitator is sufficiently stirred to cause emulsification, thereby preparing an emulsified stock solution such as a non-nano (o/w) oil-in-water type. Preferably, 40 to 60 parts by weight of water, 30 to 50 parts by weight of an oil solute, and 10 to 30 parts by weight of a nonionic surfactant are sufficiently stirred and mixed. Here, the component characteristics of the emulsified stock solution for environmental remediation have been described in detail in the foregoing embodiments, and will not be described herein.

Additives may be further added during the emulsification process, for example, oil-water fusion agents, emulsion stabilizers, emulsification accelerators, antioxidants, deodorants, disinfectants, microbial nutritional supplements, and the like. However, in this embodiment, it is not limited to this. Here, the characteristics of the above-mentioned add-ons have been described in detail in the foregoing embodiments, and are not described herein again.

The main procedures of the emulsification include, for example, at least: (1) the nonionic surfactant utilizes the affinity between the hydrophobic group and the hydrophilic group and the emulsified material to reduce the surface tension between the oil and the water, and enters between the oil and the water. , the oil and water are connected by means of a non-ionic surfactant; (2) as the surface tension between the oil and water decreases, the emulsified oil or water gradually becomes thinner, and the non-ionic surfactant is transmitted. And widely distributed on the surface of another liquid; (3) under the action of the hydrophobicity and hydrophilicity of the nonionic surfactant, the emulsified oil and the water gradually emulsification promoter are split, so that the oil or water is Emulsified and evenly dispersed in other liquids. However, in the preparation method of the present invention, it is not limited thereto.

The physical properties of the emulsified stock solution for environmental remediation prepared according to the preparation method of the present embodiment are as follows, and the average particle diameter of the oil particles of the emulsified stock solution may be in the range of 1 nm to 1000 nm; preferably 300 The range from nm to 400 nm.

According to still another aspect of the present invention, an embodiment of a method for remediating a contaminated environment in which a emulsified stock solution is used for remediation and purification of a contaminated environment is proposed to recover oil slick in a polluted environment.

Please refer to FIG. 1, which shows a schematic block diagram of a method for remediating a contaminated environment of the present invention. As shown in Figure 1, the method of remediation of the contaminated environment includes at least the following steps. As shown in step S10, an emulsified stock solution is prepared by a method for preparing an emulsified stock solution for environmental remediation. Next, as shown in step S20, the prepared emulsified stock solution is poured into a contaminated environment to obtain a premix, and the premix (that is, the contaminated environment in which the emulsified stock solution is added) is sufficiently stirred and mixed by a stirrer. The contaminated environment may include, for example, contaminants, soil, sediment, natural water or groundwater. Then, as shown in step S30, a demulsifier of a specific concentration is added to the premix to form a mixed milk, and the mixture is sufficiently stirred. After the milk is completely demulsified, an oil moisture layer is present, and the oil floats on the upper surface of the liquid, and the oil slick is recovered as shown in step S40.

The demulsifier can destroy the emulsified liquid structure to achieve the separation of the phases in the emulsion. In this embodiment, the demulsifier may include, for example, an ionic demulsifier, a nonionic demulsifier. For example, the ionic demulsifier is at least one selected from the group consisting of sodium carbonate, calcium carbonate, copper sulfate, magnesium sulfate, aluminum sulfate, sodium chloride, calcium chloride, sodium benzoate, and combinations thereof. An example of a preferred ionic demulsifier can be sodium carbonate.

The nonionic demulsifier is, for example, at least one selected from the group consisting of a SP type demulsifier, an AP type demulsifier, an AE type demulsifier, an AR type demulsifier, and a mixture thereof. Specifically, the main component of the SP type demulsifier is polyoxyethylene polyoxypropylene stearyl ether. The AP type demulsifier is a polyoxyethylene polyoxypropylene polyether which is a polyamine polyamine as an initiator amine. The AE type demulsifier is a polyoxyethylene polyoxypropylene polyether having a polyethene polyamine as an initiator. AR type demulsifier is a new oil-soluble nonionic demulsifier which is polymerized from alkyl phenolic resin, polyoxyethylene and polyoxypropylene. However, it is not limited to this in the field of the invention.

In this embodiment, the oil slick is a substance that is lighter in specific gravity than water and floats on the surface of the water to be separated from the water. By using the method of pressurizing and depressurizing the inside of the tank, the air bubbles are attached to the outer surface of the rubber feather, and the extrusion process of the floating rubber feather is concentrated, and has a floating effect. For example, the method of recovering the oil slick includes, for example, at least one selected from the group consisting of surface floatation, stripping, mechanical oil scraping, and combinations thereof. For example, reference can be made to the specific gravity, flow rate, concentration of the wastewater, the specific gravity of the oil, the emulsification and the place of use to estimate the oil-water separation rate, and then select a suitable oil-water separator, such as an advection (API), parallel plate (PPI), Oil-water separators such as inclined plate type (CPI). However, it is not limited to this in the field of the invention.

For example, the log Kow value of a contaminant in a contaminated environment is, for example, 1.0 or more. Contaminants include, for example, tetrachloroethylene, trichloroethylene, cis-1,2-dichloroethylene, trans-1,2-dichloroethylene, 1,1-dichloroethylene, vinyl chloride, trichloroethane. ,chloroethane, 1,1-dichloroethane, 1,2-dichloroethane, carbon tetrachloride, chloroform (chloroform), dichloromethane, methyl chloride, polychlorinated biphenyls, polybromine Diphenyl ethers, dioxins, chlorobenzenes, chlorophenols, benzene, toluene, ethylbenzene, xylene, phenols, 2, 4-di (2, 4-D), Carbofuran, Da Li Diazinon, Metahamidophos, Paraquat, Parathion, Aldrin, Chlordane, Dichlorodiphenyltrichloroethane ( DDT) and its derivatives (4, 4'-Dichlorodiphenyl-trichloro ethane), Dieldrin, Endrin, Heptachlor, Toxaphene, Endosulfan ); Fluoranthene, fluorene, Anthracene, dibenzo(a, h) anthracene, 茚(1, 2, 3-cd)芘Indeno (1, 2, 3-cd) pyrene), naphthalene, phenanthrene, 芘Yrene), Acenaphthene, Acenaphthylene, Chrysene, Benz(a) anthracene, Benzo(a)pyrene, Benzene (b) Benzo(b)fluoranthene, Benzo(g, h, i) perylene, Benzo(k)fluoranthene, etc. Acyclic aromatic hydrocarbons; 1,2-dichloropropane, 1,2-dichlorobenzene, 1, 3-dichlorobenzene, 3, 3'-Dichlorobenzidine, Hexachlorobenzene, Pentachlorophenol, 2, 4, 5-Trichlorophenol , 2, 4, 6-Trichloro phenol, di(2-ethylhexyl) phthalate, phthalic acid Dibutyl phthalate (DPP), diethyl phthalate (DEP), and butyl benzyl phthalate (BBP) are at least selected from the group consisting of One, or a mixture thereof. For example, the contaminant is, for example, at least one selected from the group consisting of polychlorinated biphenyls, polybrominated diphenyl ethers, benzene (a) quinones, polycyclic aromatic hydrocarbons, and combinations thereof. However, it is not limited to this in the field of the invention.

In addition, in order to more easily destroy the stability of the emulsion, and to facilitate the demulsification of the emulsion and the emergence of the oil slick, the embodiment may further perform the aeration step after the addition of the demulsifier. Aeration can cause proper disturbance to the polluted environment, and the sediment particles can be contacted with the oil particles by the disturbance. For example, the aeration step may be implemented by a multi-stage aeration or a plug flow aeration, and the aeration may be assisted by an aeration form such as a blower in the form of a diffuser disk, a surface aerator or an oxidized deep channel. For example, a plurality of stages of aeration may be utilized to perform the aeration step to allow the air to flow in a plurality of vertical streams or a plurality of parallel streams or the like. However, in the field of the present invention, it is not limited thereto, and aeration may be performed using nitrogen gas or other gas containing no oxygen.

According to still another aspect of the present invention, an embodiment of an environmental remediation system operating in the above-described contaminated environment remediation method is proposed, which can be practically applied to rectify a contaminated environment.

Please refer to FIG. 2, which shows a schematic block diagram of the environmental remediation system of the present invention. As shown in FIG. 2, the environmental remediation system 10 includes at least a remediation processing unit 100, an inflow passage 110 and/or an outflow passage 120, and a mixing device 130.

In this embodiment, the remediation processing unit 100 includes at least a rectification tank 140. The rectification tank 140 is preferably made of stainless steel, but may be other materials such as acrylic. The rectification tank body 140 is provided with an accommodation space for accommodating at least air, a rectification object containing the contaminants described above, an environmental remediation agent prepared from the emulsified stock solution, a reaction product, or a demulsifier or oil water. An agent for a fusing agent, an emulsion stabilizer, an emulsification accelerator, an antioxidant, or a microbial nutritional supplement.

One end of the inflow passage 110 and the outflow passage 120 are respectively connected to the rectification tank body 140, and the other end may be connected to a loading and unloading place such as an oil sump collection tank, an emulsified raw material supply tank, or a demulsifier supply tank. The inflow passage 110 is used for introducing the rectification object, the environmental remediation agent, the air for aeration, the agent, and the like from the loading and unloading to the rectification tank 140; the outflow passage 120 is used for rectifying the object to be rectified and the environment. The agent, the air, the agent, the reaction product, the oil slick, and the like are discharged from the rectification tank 140 to the loading and unloading place. The mixing device 130 may be disposed in the rectification tank 140 to thoroughly mix the rectification object, the environmental remediation agent, the air, or the agent in the accommodating space. For example, the mixing device 130 may be, for example, an agitator 131, and may inject gas into the mixing device to cause a gas-liquid flow to enhance the mixing effect. However, embodiments of the invention are not limited thereto.

In this embodiment, the environmental remediation system 10 may be provided with a remediation control unit 150. For example, the remediation control unit 150 may include, for example, at least the oil recovery controller 151, the detection unit 152, the data processing device 153, and the like, but is not limited thereto in the embodiment of the present invention. For example, for example, the oil recovery controller 151 may be disposed in the outflow channel 120 for sensing the level of the oil slick to control the recovery of the oil slick to avoid recovery of other materials that are not oil slick. For example, when the oil recovery controller 151 senses the liquid level of the oil slick, an oil recovery signal om that can read the liquid level is sent to the remediation control unit 150 to provide a signal to the data processing device 153 for subsequent processing. Conversion and calculation.

In addition, the detecting unit 152 may include a flow meter disposed in the inflow channel and the outflow channel, a thermometer disposed in the rectification tank 140, and a concentration meter disposed in the outflow channel 120. The detecting unit 152 can be used to detect the content of the environmental remediation agent, the air, the agent, the reaction product, the oil slick of the remediation processing unit 110, and emit the readable environmental remediation agent, the air, the agent, the reaction product, and the oil slick. The detection signal fm of the concentration, temperature and flow rate is sent to the remediation control unit 150 for subsequent signal conversion and calculation to the data processing device 153.

In addition, a switching device 154 such as a valve may be added to the inflow channel 110 and the outflow channel 120. The switch device 154 may be electrically connected to the remediation control unit 150 in a wired or wireless manner to enable the remediation control unit 150 to directly control the switch. Actuation of device 154. In addition, the data processing device 153 can convert the oil recovery signal om and the detection signal fm into detection data, and calculate whether the detection data is higher than the warning value as a calculation result. The remediation control unit 150 can make a follow-up action of starting or stopping the feed environment remediation agent, air or agent, or starting or stopping the suction of the oil slick, etc. according to the calculation result of the data processing device 153. For example, the remediation control unit 150 controls the injection object, the environmental remediation agent, the air, or the injection agent through the switch device 154; and controls the object to be rectified, the environmental remediation agent, the air, and the agent through the switch device 154. The discharge of the reaction product; the discharge of the oil slick is controlled by the switching device 154 or the oil recovery controller 151. However, it is not limited to this in the field of the invention.

In the above embodiment, the remediation control unit 150 is disposed at the site of the contaminated environment to immediately perform remediation of the contaminated environment. The remediation control unit 150 can be implemented as part of an embedded system, a computer system, a proprietary electronic device, or a control system. However, the embodiments of the present invention are not limited thereto. In another implementation, the remediation control unit 150 may further include a communication device 155 for communicating the environmental remediation system 10 with the outside world, for example, including compliance with wireless network standards such as ZigBee, Bluetooth or WiFi, or mobile communication. Standard communication devices such as 2G and 3G. However, it is not limited to this in the field of the invention. In other embodiments, please refer to the schematic block diagram of the environmental remediation system of other embodiments of the present invention in FIG. As shown in FIG. 3, the environmental remediation system 10 may further include a remote computing device 156 or a terminal device 157 as the remote control system 158. The terminal device 157 (for example, a personal computer, a tablet computer, a smart phone, or a dedicated computing device, etc.) can be electrically connected to the remote computing device 156, and the remote computing device 157 is communicated with the communication device 154 in the remediation control unit 150. The communication link LK is used to instruct the remediation control unit 150 to send a control signal SC1 to the oil slick controller 151 to remotely control the oil slick controller 151, to send a control signal SC2 to the detecting unit 152, thereby remotely controlling the detecting unit 152, or The switching device 154 sends a control signal SC3 to remotely control the switching device 154, thereby enabling remote monitoring of the on-site remediation of the contaminated environment. The above communication link LK is, for example, a wired or wireless or a combination of communication links or networks such as a regional network, an internet or a mobile network, or a combination thereof. However, it is not limited to this in the field of the invention.

In addition, the remediation control unit 150 can be further configured to be controlled by, for example, the cloud control system 159 of the server, and the remediation control unit 150 is coupled to the terminal device such as a personal computer, a tablet computer, a smart phone, etc. by the cloud control system 159. 157, online monitoring can be done to achieve cloud monitoring and control. For example, the environmental remediation system 10 of the present embodiment is installed at a plurality of sediment remediation sites, so that the cloud control system can perform statistics, monitoring, or control on remediation situations and data of multiple processing sites, thereby effectively Holistic remediation. For environmental protection operators, competent authorities or enterprises, it is possible to obtain remediation effects more efficiently. However, it is not limited to this in the field of the invention. [Examples]

Hereinafter, a nano-sized emulsified stock solution needle prepared in accordance with the above-described method for preparing an emulsified stock solution for environmental remediation will be described by way of Example 1 to Example 3. In addition, the inventors of the present invention used the emulsified stock solution A prepared in Example 1 to treat the sediment taken from Errenxi, Tainan City, and explained the treatment process of the sediment by the following Examples 4 to 10. . Further, in the case of Example 11 and Example 12, the biodegradation of the contaminant BaP by the emulsified recovered sediment and the non-emulsified recovered sludge will be described. Hereinafter, the present invention will be described by way of examples, but the invention is not limited to the examples.

Example 1: Preparation of emulsified stock solution A 340 ml of sorbitan monooleate (Span 80) and 1020 ml of soybean oil were added to a test bottle and mixed at room temperature, and then added to 1085.4 ml of deionized water ( DI water) was mixed with 21.6 ml of polyoxyethylene sorbitan monolaurate (Tween 20) to form a 2% Tween 20 liquid to form an emulsified system. The emulsion system was stirred with a stirrer for 30 minutes to obtain an emulsified stock solution A, and the appearance was thick and milky white. The average particle size was measured using a Zetasizer R Nano ZS (Malvern Instruments, Worcestershire, UK) and found to be 345.7 nm.

Example 2: Preparation of emulsified stock solution B At room temperature, 5 ml of sorbitan monooleate (Span 80) and 1 ml of soybean oil were added to a test bottle, thoroughly mixed with Vortex for 20 seconds, and added to 10.8 ml. Deionized water (DI water) was mixed with 0.21 ml of polyoxyethylene sorbitan monolaurate (Tween 20) to form a 2% Tween 20 liquid to form an emulsified system. The ultrasonic breaker was placed in a test bottle, and the emulsion system was subjected to ultrasonic vibration for 30 seconds to obtain an emulsified stock solution B, and the appearance was white milk. The average particle size was measured using a ZetasizerR Nano ZS and found to be 389 nm.

Example 3: Preparation of emulsified stock solution C 14.4 ml of polyoxyethylene sorbitan monolaurate (Tween 20), polyoxyethylene sorbitan monooleate (Tween 80), 7.8 ml of dehydrated sorbitol at room temperature Alcohol monooleate (Span 80) and 1 ml of soybean oil were added to the test bottle and 3 ml of soybean oil into the test bottle, and stirred to form an emulsified system. 95 ml of deionized water was added dropwise to the emulsifying system and stirring was continued, and the emulsified system was gradually transformed into an aqueous phase, and the temperature was raised to 85 ^. After C, the mixture was cooled for 12 hours to make it reverse. The emulsified stock solution C was obtained, and the appearance was a translucent liquid. The average particle size was measured using a ZetasizerR Nano ZS and found to be 35.5 nm.

Example 4: Treatment of bromine-containing diphenyl ether-containing sediments. The dry weight of the sediment was 12.35 Kg and placed in the remediation tank of the environmental remediation system of Figure 2, and 1 ppm of bromodiphenyl ethers ( BDE209) added to the sediment. The premix was obtained by adding the emulsified stock solution A to the sediment at a ratio of the dry weight of the sediment relative to the amount of the emulsified stock solution A of 1:0.84, and the mixture was stirred by a stirrer for 7 minutes. Then, a 0.78 M sodium carbonate demulsifier of 4.56 ml was added, and after stirring for 30 minutes, it was allowed to stand for 16 hours to wait for the demulsification to occur. The waste oil is allowed to float on the surface of the liquid system and stratified with the liquid system, and the surface oil is used to recover the oil. The amount of oil collected and recovered was calculated by calculating the amount of BDE209 to obtain a recovery rate of 48.3%.

Example 5: Treatment of bromine-containing diphenyl ether-containing sediments A dry weight of 12.35 Kg was placed in a remediation tank of the environmental remediation system of Figure 2, and 1 ppm of BDE209 was added to the sediment. The premix was obtained by adding the emulsified stock solution A to the sediment at a ratio of the dry weight of the sediment relative to the amount of the emulsified stock solution A of 1:0.84, and the mixture was stirred for 7 minutes by a stirrer. Then, 4.56 L of a 0.78 M sodium carbonate demulsifier was added, and after aeration for 30 minutes while stirring with nitrogen, the mixture was allowed to stand for 16 hours to wait for the demulsification to occur. The waste oil is allowed to float on the surface of the liquid system and stratified with the liquid system, and the surface oil is used to recover the oil. The amount of oil collected and recovered was calculated by the amount of BDE 209 to obtain a recovery rate of 82%.

Example 6: Treatment of sediment containing polybrominated diphenyl ethers. The dry weight of the sediment was 12.35 Kg and placed in the remediation tank of the environmental remediation system of Figure 2, and 1 ppm of polybrominated diphenyl ether. Classes (PBDEs) are added to the sediment. The premix was obtained by adding the emulsified stock solution A to the sediment at a ratio of the dry weight of the sediment relative to the amount of the emulsified stock solution A of 1:0.84, and the mixture was stirred for 7 minutes by a stirrer. Then, 4.56 L of a 0.78 M sodium carbonate demulsifier was added, and aeration was carried out for 30 minutes while stirring, and then allowed to stand for 16 hours to wait for the demulsification to occur. The waste oil is allowed to float on the surface of the liquid system and stratified with the liquid system, and the surface oil is used to recover the oil. The recovered oil amount and the amount of PBDEs collected were calculated to obtain a recovery rate of 76%.

Example 7: Treatment of phthalate-containing sediments The scale dry weight of the sediment was 12.35 Kg and placed in the remediation tank of the environmental remediation system of Figure 2, and 0.395 ml of phthalates were added. (PAEs) di(2-ethylhexyl) phthalate (DEHP) was added to the sediment to 50 mg/Kg. The premix was obtained by adding the emulsified stock solution A to the sediment at a ratio of the dry weight of the sediment relative to the amount of the emulsified stock solution A of 1:0.84, and the mixture was stirred by a stirrer for 7 minutes. Then, 4.56 L of a 0.78 M sodium carbonate demulsifier was added, and after aeration for 30 minutes while stirring with nitrogen, the mixture was allowed to stand for 16 hours to wait for the demulsification to occur. The waste oil is allowed to float on the surface of the liquid system and stratified with the liquid system, and the surface oil is used to recover the oil. Calculated by recovering the amount of oil collected and the amount of DEHP, a recovery of 71% was obtained.

Example 8: Treatment of phthalate-containing sediments The weight of the bottom sediment was 12.35 Kg placed in the remediation tank of the environmental remediation system of Figure 2, and 0.073 ml of phthalates were added. (PAE) Dibutyl phthalate (DBP) was added to the sediment to 10 mg/Kg. The premix was obtained by adding the emulsified stock solution A to the sediment at a ratio of the dry weight of the sediment relative to the amount of the emulsified stock solution A of 1:0.84, and the mixture was stirred by a stirrer for 7 minutes. Then, 4.56 L of a 0.78 M sodium carbonate demulsifier was added, and after aeration for 30 minutes while stirring with nitrogen, the mixture was allowed to stand for 16 hours to wait for the demulsification to occur. The waste oil is allowed to float on the surface of the liquid system and stratified with the liquid system, and the surface oil is used to recover the oil. The amount of oil collected and recovered was calculated by calculating the amount of DBP to obtain a recovery rate of 62%.

Example 9: Treatment of phthalate-containing sediments The scale dry weight of the sediment was 12.35 Kg and placed in the remediation tank of the environmental remediation system of Fig. 2, and 0.068 ml of phthalate was added. (PAEs) diethyl phthalate (DEP) was added to the sediment to 10 mg/kg. The premix was obtained by adding the emulsified stock solution A to the sediment at a ratio of the dry weight of the sediment relative to the amount of the emulsified stock solution A of 1:0.84, and the mixture was stirred by a stirrer for 7 minutes. Then, 4.56 L of a 0.78 M sodium carbonate demulsifier was added, and aeration was carried out for 30 minutes while stirring, and then allowed to stand for 16 hours to wait for the demulsification to occur. The waste oil is allowed to float on the surface of the liquid system and stratified with the liquid system, and the surface oil is used to recover the oil. The recovered oil amount and the amount of DEP collected were calculated to obtain a recovery rate of 73%.

Example 10: Treatment of phthalate-containing sediments The scale dry weight of the sediment was 12.35 Kg and placed in the remediation tank of the environmental remediation system of Fig. 2, and 0.07 ml of phthalate was added. (PAEs) butyl butyl phthalate (BBP) was added to the sediment to 10 mg/kg. The premix was obtained by adding the emulsified stock solution A to the sediment at a ratio of the dry weight of the sediment relative to the amount of the emulsified stock solution A of 1:0.84, and the mixture was stirred by a stirrer for 7 minutes. Then, 4.56 L of a 0.78 M sodium carbonate demulsifier was added, and aeration was carried out for 30 minutes while stirring, and then allowed to stand for 16 hours to wait for the demulsification to occur. The waste oil is allowed to float on the surface of the liquid system and stratified with the liquid system, and the surface oil is used to recover the oil. The amount of oil recovered and the amount of BBP recovered was calculated to obtain a recovery rate of 64%.

Example 11: Biodegradation treatment of emulsification recovery treatment sludge The scale dry weight of 12.3 Kg was placed in the remediation tank of the environmental remediation system of Fig. 2, and the dry weight of the sediment was relative to the amount of emulsified stock solution A. At a ratio of 1:0.84, the emulsified stock solution A was added to the sediment to obtain a premix, and the premix was stirred by a mixer for 7 minutes. Then, 4.56 L of a 0.78 M sodium carbonate demulsifier was added, and aeration was carried out for 30 minutes while stirring, and then allowed to stand for 24 hours to wait for the demulsification to occur. The waste oil is allowed to float on the surface of the liquid system and stratified with the liquid system, and the surface oil is used to recover the oil. After the oil slick is collected, 30 g of the sediment in the rectification tank is taken out and placed in a petri dish, and placed for 225 days without a lid. The concentration of benzene (a) quinone (BaP) was measured on the 25th day, the 48th day, the 65th day, the 133rd day, the 155th day, the 180th day, and the 217th day. The obtained concentration data is a graph showing the change in BaP concentration with time in Fig. 4 versus time.

Example 12: Biodegradation treatment of sediment without emulsification recovery 30 g of sediment was weighed, placed in a petri dish, and placed without a lid for 225 days. The concentration of BaP was measured on the 25th day, the 48th day, the 65th day, the 133rd day, the 155th day, the 180th day, and the 217th day. The obtained concentration data is a graph showing the change in BaP concentration versus time in Fig. 4 in terms of Δ.

In the aspect of preparing the emulsified stock solution for environmental remediation, it is understood from the results of Examples 1 to 3 that the average particle diameter of the oil particles of the emulsified stock solution in the examples of the present invention is in the range of 1 nm to 1000 nm. Preferably, the average particle size has a better oil-water layer effect in the range of 300 nm to 400 nm. Further, the emulsified stock solution A of Example 1 having a large soybean oil content has a preferable stratification effect. However, it is not limited to this in the field of the present invention.

In terms of the treatment of the contaminated environment, from the experimental results of Examples 4 to 10, the emulsified stock solution for environmental remediation according to the embodiment of the present invention is used, and the contaminated environment according to the embodiment of the present invention is used. The remediation method can rectify the contaminated sediment and achieve excellent oil recovery. Further, from the experimental results of Examples 5 to 10, nitrogen gas was introduced to disturb the oil particles, thereby accelerating the completion of the demulsification, and a better oil recovery can be achieved as compared with Example 4 without aeration. rate.

Further, in terms of the degradation of the contaminants in the sediment by the microorganisms, from the experimental results of Example 11 and Example 12, the emulsified and recovered sludge of Example 11 is under natural rejuvenation conditions. After 217 days, the concentration of BaP decreased from 2.5 mg/kg to 0.335 mg/kg (approximately 86.6% degradation). Also under the conditions of natural re-cultivation, compared with Example 11, the un-emulsified recovered sludge of Example 12 had a poor degradation rate for BaP, and after 217 days, the concentration of BaP was 2.5. The mg/kg was only reduced to 1.08 mg/kg (approximately 56.7% degradation). Moreover, Example 11 had a significant biodegradation effect on the 25th day, while Example 12 was placed on the surface for more than 60 days to have a significant biodegradation effect. Therefore, it can be inferred that the sediment containing the emulsified stock solution and being emulsified and recovered is advantageous for the microorganism to degrade BaP in the sediment, and has the effect of reducing environmental ecological pollution.

In summary, the emulsified stock solution for environmental remediation prepared by the preparation method of the present invention can be used to remediate the polluted environment, and the oil can be efficiently recovered, and the sediment in the rectified contaminated environment has excellent biological properties. Degradation ability of pollutants. River sediment pollution remediation can be completed quickly and in a short period of time, and any need for pollution concerns can be reduced. In addition, the emulsified stock solution for environmental remediation of the present invention can be directly applied to the soil or the sediment to recover the hydrophobic substance, and the hydrophobic substance in the soil can be effectively recovered or removed.

However, the above is only an embodiment of the present invention, but the scope of the present invention is of course not limited thereto. It should be understood by those skilled in the art that the present invention can be easily modified and modified without departing from the spirit and scope of the invention. Within the scope. In addition, any of the embodiments or the claims of the present invention are not required to include all of the objects or advantages or features disclosed in the specification. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention.

10‧‧‧Environmental remediation system
100‧‧‧Remediation unit
110‧‧‧ Inflow channel
120‧‧‧ outflow channel
130‧‧‧Mixed device
131‧‧‧Agitator
140‧‧‧Remediation tank
150‧‧‧Remediation Control Unit
151‧‧‧Steam recovery controller
152‧‧‧Detection unit
153‧‧‧ data processing device
154‧‧‧Switching device
155‧‧‧Communication device
156‧‧‧Remote computing device
157‧‧‧ Terminal devices
158‧‧‧Remote control system
159‧‧‧Cloud Control System
Fm‧‧‧detection signal
Om‧‧‧Steam recovery signal
LK‧‧‧Communication Link
SC1, SC2, SC3‧‧‧ control signals
S10, S20, S30, S40‧‧‧ steps

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic block diagram showing a method of remediation of a contaminated environment of the present invention. Figure 2 is a schematic block diagram showing the environmental remediation system of the present invention. 3 is a schematic block diagram showing an environmental remediation system of other embodiments of the present invention. Fig. 4 is a graph showing changes in BaP concentration with time in the treatment method of the contaminated environment of the present invention.

S10, S20, S30, S40‧‧‧ steps

Claims (15)

An emulsified stock solution for environmental remediation, comprising: a nonionic surfactant, which comprises polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene-polyoxypropylene alcohol, polyoxyethylene The fatty acid ester, the trialkylamine oxide, and mixtures thereof comprise at least one selected from the group consisting of: oil solutes, which are derived from soybean oil, peanut oil, coconut oil, olive oil, grape seed oil, cottonseed oil, Sunflower oil, palm oil, food grade oils and mixtures thereof comprise at least one selected from the group; and water. The emulsified stock solution for environmental remediation according to claim 1, wherein the emulsified stock solution for environmental remediation is a non-nano-type (o/w) oil-in-water type, and the content of the oil solute is more than 40%. The emulsified stock solution for environmental remediation according to claim 1, wherein the surfactant comprises polyethylene glycol, polyoxyethylene sorbitan, polyoxyethylene sorbitan monooleate, hexitol laurate, single At least one selected from the group consisting of -9-octadecenoic acid sorbitan esters and mixtures thereof. The emulsified stock solution for environmental remediation according to claim 1, further comprising at least one of an oil-water fusion agent, an emulsion stabilizer, an emulsification accelerator, an antioxidant, or a combination thereof for enhancing the relationship between the oil solute and the water. Emulsification. The emulsified stock solution for environmental remediation according to claim 1, wherein the oil particle of the emulsified stock solution for environmental remediation has an average particle diameter ranging from 1 nm to 1000 nm. The emulsified stock solution for environmental remediation according to claim 1, wherein the oil particles of the emulsified stock solution for environmental remediation have an average particle diameter of 300 nm to 400 nm. The invention discloses a preparation method of an emulsified stock solution for environmental rectification, which comprises: preparing 15 to 75 parts by weight of water, 25 to 55 parts by weight of an oil solute, and the remaining part of the nonionic surfactant to be fully emulsified and prepared to form an emulsified liquid solution. Wherein the nonionic surfactant comprises polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene-polyoxypropylene alcohol, polyoxyethylene fatty acid ester, trialkylamine oxide and The mixture comprises at least one selected from the group consisting of: soybean oil, peanut oil, coconut oil, olive oil, grape seed oil, cottonseed oil, sunflower oil, palm oil, food grade oil and The mixture forms at least one selected from the group. A method for remediating a polluted environment, comprising: injecting and immersing an emulsified liquid for environmental remediation according to any one of claims 1 to 7 in a contaminated environment, including a contaminant, Soil, sediment, natural water or groundwater; Demulsifier is added and thoroughly stirred, the demulsifier is an ionic demulsifier or a non-ionic demulsifier; and the oil slick is recovered. The method for rectifying a contaminated environment as recited in claim 8 wherein the ionic demulsifier is from sodium carbonate, calcium carbonate, copper sulfate, magnesium sulfate, aluminum sulfate, sodium chloride, calcium chloride, sodium benzoate and At least one selected from the combination. The method for remediating a contaminated environment as recited in claim 8 wherein the nonionic demulsifier is in the group consisting of a SP type demulsifier, an AP type demulsifier, an AE type demulsifier, an AR type demulsifier, and a mixture thereof. At least one of the selected ones. The method for remediation of a polluted environment as recited in claim 8 wherein prior to the step of recovering the oil slick, the air is further introduced to sufficiently aerate. The method for remediating a polluted environment as recited in claim 8 wherein the method for recovering the slick comprises at least one selected from the group consisting of surface floatation, stripping, mechanical slick scraping, and combinations thereof. An environmental remediation system, comprising: a remediation treatment unit, comprising at least a rectification tank body, wherein the remediation tank system has a accommodating space for accommodating at least the rectification object, the environmental remediation agent, the air, the agent or the reaction product And an inflow passage and/or an outflow passage, wherein the inflow passage and the outflow passage are respectively detachably connected to the rectification tank, and are available for rectification object, environmental remediation agent, air, and agent The injection or discharge, and the discharge of the reaction product and the oil slick; and the mixing device, which can be disposed in the rectification tank for rectifying the object, the environmental remediation agent, and the air in the accommodating space Or the agent is sufficiently mixed; wherein the environmental remediation agent is prepared by the emulsified stock solution for environmental remediation as recited in any one of claims 1 to 7. The environmental remediation system of claim 13, further comprising: a remediation control unit for controlling the reprocessing object, the environmental remediation agent, the air, or the injection of the agent relative to the remediation processing unit And discharging, and discharging the reaction product, the oil slick relative to the treatment processing unit, and the remediation control unit includes a oil recovery controller. The environmental remediation system of claim 14, wherein the remediation control unit further comprises: a detecting unit, configured to detect the environmental remediation agent, the air, or the agent, the reaction product, the reaction treatment unit, The content of the oil slick and sends a detection signal to the remediation control unit.