Abstract: Methods and systems for use of switchable water, which is capable of reversibly switching between an initial ionic strength and an increased ionic strength, is described. The disclosed methods and systems can be used, for example, in distillation-free removal of water from solvents, solutes, or solutions, desalination, clay settling, viscosity switching, etc. Switching from lower to higher ionic strength is readily achieved using low energy methods such as bubbling with C02, CS2 or COS or treatment with Bronsted acids. Switching from higher to lower ionic strength is readily achieved using low energy methods such as bubbling with air, inert gas, heating, agitating, introducing a vacuum or partial vacuum, or any combination or thereof.

Abstract: A portable system for extracting iodine from brine on-site is disclosed. The portable system includes a mobile platform containing a treatment unit for oxidizing iodine ions into elemental iodine, an adsorption unit capable of binding iodine, and may also have an electrolytic cell and/or a gas-liquid separator. The treatment unit and the adsorption unit may be located in the same or different portable operating devices. When transported to a field site containing natural gas wells, the natural gas wells provide a fluid stream containing natural gas and brine. The separators can separate the natural gas from the brine, and the brine is then run through the treatment unit and the adsorption unit to bind iodine present in the brine. The brine is then returned to the natural gas well. Upon saturation, the portable operating device is transported to a second location, where iodine is extracted from the adsorption unit.

Abstract: A plasma advanced water treatment apparatus includes a double pipe having a first passage for treated water and a second passage for radical reaction gas, which are separated from each other; a plasma generating means including electrodes arranged at the first and second passages of the double pipe, and a power supply unit connected with the electrodes; and a water tank connected with the double pipe so that the treated water and a radical generation source react with each other.

Abstract: A fluid treatment apparatus comprising: a reactor vessel defining a chamber and having an inlet and an outlet to allow fluid to flow through the chamber; a UV light source adapted to transmit light within the chamber; and a plurality of catalyst members comprising a catalytic outer surface, the catalyst members being freely contained within the chamber, wherein the apparatus is adapted to cause the catalyst members to move around within the chamber as fluid flows through the chamber.

Abstract: A set of vertically stackable interacting cartridges for improving the delivery of biocide of a bulk feeder by positioning the stackable cartridges in a stacked condition within a chamber in the bulk feeder wherein the stackable cartridges are maintained in vertical interacting flow alignment with each other to provide enhanced control of the delivery of the biocide carried within each of the stackable cartridges without replacing the control valves of the bulk feeder.

Abstract: The present invention relates to mixing apparatus for crushing sludge comprising a motor part in which a rotary shaft is inserted into the motor part and the motor part is rotated, a moving part formed to penetrate the motor part from one side to another side and move a chemical which is flowed through an outside chemical feeder to the another side, and a paddle mounted on the another side of the motor part to rotate based on the rotation of the motor part and spray the chemical.

Abstract: An apparatus for a programmable self sanitizing water dispenser apparatus with a digital controller as well as a programmable method for generating ozone for cleaning the reservoir and the water contained within it. The apparatus includes an anti-spill receiver that houses the controller and that can contain a ozone generator.

Abstract: An apparatus and a method for an ozone-based treatment of polluted water are disclosed. The apparatus and the method generally comprise three stages. The first stage is an ozone treatment stage wherein the polluted water is treated with ozone gas. The second stage is a gas-liquid separation stage wherein excess non-dissolved gases, from the ozone treatment stage, are removed from the water whereby the water exiting the gas-liquid separation stage is substantially saturated with dissolved gases and substantially free of non-dissolved gases. The last stage is a membrane filtration stage wherein the gas-saturated water generally undergoes micro-filtration or ultra-filtration. Microbubbles formed during this final stage generally prevent the accumulation of particles and pollutants on the surface of the membranes and/or inside the openings or pores thereof; thereby acting as a self-cleaning mechanism for the membrane filter.

Abstract: A method and apparatus for recovering oil from oil-containing sorbents, such as drill cuttings obtained from drilling with an oil-based mud. The method includes peptizing the substrate with an acid reagent and direct thermal desorption with combustion effluent gases at high temperature under turbulent mixing conditions. Another method disclosed includes upgrading the oil in the substrate to improve one or more of the properties of the recovered oil relative to the oil in the substrate, such as, lower aromatics content, lower sulfur content, lower functional group content, higher saturates, higher viscosity, higher viscosity index, and any combination thereof. The apparatus provides for efficient recovery of oil from the substrate with a short residence time, high throughput, low residual oil content in the treated solids and/or high percentage of oil recovery. The apparatus may be transported to a remote location for on-site treatment of drill cuttings or other oil-containing solids.

Abstract: Containers for controlled release of an additive composition into a liquid composition include a liquid impermeable casing having a hollow interior, at least one first opening, at least one second opening and at least one third opening, a liquid valve operable to allow a liquid composition to pass into the hollow interior across the liquid valve, an air valve operable to allow air to pass out of the hollow interior across the air valve and a membrane component secured to the casing. Methods of releasing additive compositions into liquid compositions are also provided.

Abstract: An arrangement for addition of chlorine dioxide to flowing water in a pipeline is provided. The reactants are reacted in a reaction chamber located in the flow of water and the chlorine dioxide is passed from the reaction chamber directly into the flowing water.

Abstract: A multistage dissolved air flotation and advanced oxidation (MDAF-AO) system/method with multi-functions in oil recovery, solids removal, emulsion breaking, and advanced oxidation. Influent, with oil and suspended solids, enters a first stage for oil recovery includes a gas ionizer and an air dissolving pump. A second stage includes of two coagulation/flotation compartments connected in serial to enhance solids removal efficiencies. Micro air bubbles are created by air dissolving pumps in each compartment. A third stage is for the emulsion breaking unit to further remove or recover the emulsified oils. A fourth stage includes advanced oxidation by using ultraviolet (UV) and hydrogen peroxide to oxidize and disinfect the bacteria and microorganisms.

Abstract: The present invention pertains to an effective system and method for reducing or eliminating the formation of scale in desalination systems. The system utilizes at least one pair of electrodes in direct contact with a liquid to induce an oscillating electric field directly in a portion of the liquid or a liquid stream of the desalination system. The electric field is capable of inducing bulk precipitation of ions, minerals, salts, particulates, contaminants or a combination thereof from the liquid stream.

Abstract: A filter device for filtration of fluid has a filter element of a zigzag-folded filter medium that is flowed through in a radial direction of the filter element. An additive for functional change of fluid properties of the fluid to be filtered in the filter device is provided. The additive is applied circumferentially on the filter element onto outwardly positioned fold tips of the zigzag-folded filter medium of the filter element.

Abstract: In order to disinfect and to detoxify a fluid, a photoreactor contains at least two light sources. One light source activates the catalytic function of a semiconductor material in the fluid to reduce the concentration of contaminants in the fluid, such as by breaking down organic contaminants into non-toxic compounds. A second light source acts directly on living biological entities to sterilize or kill them and thereby disinfect the fluid, and can also serve to activate a semiconductor photocatalyst that in turn causes further damage to biological contaminants. The semiconductor photocatalyst is desirably attached to an optically transmitting fiber substrate in the fluid. The second light source in one embodiment is external to the fluid and illuminates the photocatalyst through transmitting surfaces in a fluid containment vessel. The light sources can comprise respective sets of plural LEDs.

Abstract: The present disclosure provides devices and methods for harvesting and processing tissue from patients for grafting. The devices can include a tissue collection chamber for ascetically collecting, processing, and/or re-implanting adipose tissue.

Abstract: The super oxidation, coagulation and flocculation system is applicable to water and wastewater chemical treatment in which oxidation, coagulation and flocculation processes take place in a single vessel. The apparatus and process can be used for treatment of domestic and industrial water and wastewater for removal of organic and inorganic contaminants. The oxidation process can be provided by several oxidizing chemicals such as ozone, hydrogen peroxide, potassium permanganate, chlorine and Ultra Violet Lights, and the coagulation process can be accomplished with several coagulants such as aluminum sulphide, ferric chloride, ferric sulphate. Selection of the chemicals depends on the quality of the water or wastewater to be treated and the treated water quality required, and it covers a wide range of impurities to be removed and specifically difficult to oxidize hydrocarbons and chlorinated organics, and iron, manganese, uranium, arsenic, cyanide, hydrogen sulphide.

Abstract: A water-based remediation bed includes a container providing a fluid cavity. Organic, inorganic and biological remediation media are arranged in the cavity and are configured to permit a water-based fluid within the cavity to simultaneously flow through the media.

Abstract: A transportable water treatment system includes: a lower cage housing a water purifying apparatus, a middle cage housing a first water storage tank, and an upper cage housing a second water storage tank. The transportable water treatment system has a footprint approximate to the area of the lower cage. A chlorinator may be used in the water purifying apparatus that includes a bowl having an inlet at the bottom and an outlet on its side. A channel is around the inlet forcing fluid to flow to the top of the channel and over its edges. A flow diverter is positioned above the inlet adapted to transfer the flow of fluid to a substantially horizontal direction. A platform is positioned within the channel being adapted to position a single chlorine tablet within the channel. The lid is adapted for holding a plurality of chlorine tablets above the platform.

Abstract: A wastewater treatment apparatus (10) that treats the wastewater containing persistent substances, according to the present invention, includes a wastewater treatment bath (12) for treating a wastewater (11), an oxidizing reagent adding unit (14) for adding an oxidizing reagent (13) in the wastewater treatment bath (12), and an alkaline reagent adding unit (16) for adding an alkaline reagent (15) in the wastewater treatment bath (12). By making the wastewater in the wastewater treatment bath (12) in the alkaline condition, it is possible to completely decompose the persistent substances in the wastewater by the oxidation treatment using an oxidizing reagent.

Abstract: Selenium in the form of a reduced species such as selenocyanate is oxidized to produce an oxidized selenium species such as selenate or selenite, and then a biological reduction process is used to remove selenium from the oxidized selenium species. In an example, a chemical oxidant is added to a wastewater containing selenocyanate to produce selenate and selenite. The partially treated wastewater is then fed to a reactor containing a fixed media supporting a biofilm with selenium reducing organisms. The selenium in the selenate and selenite is reduced to an insoluble form of selenium, such as elemental selenium, which precipitates from the wastewater.

Abstract: Enclosed reactor systems, each of at least three chambers, fluid flow between the chambers controlled by selectively permeable barriers, flow controlled by an alternating flow diaphragm pump. Also dual diaphragm pump, a diaphragm pump-driven sampling manifold, and a modifier module, all usable with the enclosed reactor systems as well as other systems.

Abstract: A sewage treatment system is revealed. Water with contaminants is drawn from sources to the sewage treatment system for automatic and fast water purification. Thus clean drinking water is generated. The water with contaminants is sent to a treatment tank by a motor. Then non-toxic and odorless chemicals are sprayed in the treatment tank. By stirring and mixing of movable blades, the contaminants are coagulated and precipitated into a funnel under the treatment tank to be discharged. Next clean water in the treatment tank is sent to a centrifuge separator to be filtered and dehydrated by centrifugation. Water comes out from the centrifuge separator is drinking water. The sewage is converted into clean water. The system can provide clean safe drinking water to regions without water treatment plants.

Abstract: In one embodiment, a grey water treatment system includes an oxidation reactor for oxidizing grey water. The grey water treatment system also includes a biological reduction and precipitation system with microbes designed to remove one or more target components from the oxidized grey water.

Abstract: A fine bubble diffusing tube that can generate fine bubbles evenly and uniformly even when the diffusing tube has a long length, a fine bubble diffusing device using such a tube and a submerged membrane separation apparatus are produced. The fine bubble diffusing tube is provided with a cylindrical supporting tube 1, and an elastic sheet 2 with fine slits formed therein, with the elastic sheet 2 being placed to cover the outer circumference of the supporting tube 1, so that, upon supplying a gas to a space between the elastic sheet 2 and the supporting tube 1, the fine slits of the elastic sheet 2 are opened to generate fine bubbles, and the supporting tube 1 has a length L of 1000 mm or more in the longitudinal direction, with gas supply units 4 serving as gas flow inlets being attached to the two ends of the supporting tube.

Abstract: The present invention provides an apparatus for producing photocatalytic reaction water through a photocatalytic reaction, which can produce water containing a satisfactory amount of active oxygen species, can eliminate microorganisms, parasites or protozoa, shows high oxidizing ability for a prolonged period of time, can reduce the power requirements, is small in size, and is applicable to various devices. A photocatalyst is radiated with light emitted from a light source to produce active oxygen species, and the active oxygen species is diffused in water, whereby the water is provided with functions of the active oxygen species. An oxidation reaction with the water is utilized to perform at least one selected from the elimination of microorganisms, the elimination of parasites, and the elimination of protozoa.

Abstract: Biological wastewater treatment of wastewater is performed by oxidizing organic carbon with sulfur or a sulfur compound as an electron carrier, and reducing the sulfur or sulfur compound to sulfide. The sulfide is oxidized with nitrate or oxygen. If necessary, ammonia is oxidized to nitrate and then reduced to nitrogen gas. The process is effective for saline waste water facilities, as well as non-saline waste water facilities.

Abstract: Process and apparatus is provided for making a solution of sodium carbonate (soda ash) and water by which the soda ash is delivered in dry, particulate form to a silo, while air is being exhausted from the silo, dehumidifying air from the silo and discontinuing the dehumidifying of air while soda ash is being delivered to the silo, delumping soda ash in the silo, and then delivering water to a mixing vessel and transferring particulate soda ash to the treating vessel, in which it is mixed and the resulting solution is then discharged. The solution can be delivered to a storage tank or vessel and then to either a single or multiple outlet dosing station and/or some of the solution can be returned to a storage silo.

Abstract: A device for purifying water includes: a reactor housing having an inlet opening for supplying polluted water and an outlet opening for draining the purified water from the reactor housing; hydrodynamic cavitation means arranged in the reactor housing for causing cavitation in the polluted water; main light means for irradiating the polluted water with ultraviolet light, wherein the main light means provide a polychromatic and/or monochromatic pulsed ultraviolet light, which is synchronized selectively with the specific cavitation event(s) in the polluted water.

Abstract: One embodiment of a method to system for enhancing TOC removal while maintaining membrane filter performance is the implementation of a dual pH control system. This embodiment will enhance the ability to maximize TOC removal while maintaining optimum membrane filter performance. By adjusting pH, dosing a chemical coagulant and incorporating liquid-solids separation, a considerably higher degree of TOC removal is possible. By adjusting pH again after liquid-solids separation this embodiment can drastically increase the efficiency of the membrane microfiltration/ultrafiltration system. Thus pH control for soluble organic removal is critical. This pH level however may not be the ideal set point for minimizing membrane fouling which is the basis for this embodiment. An example: the pH set point for optimum soluble organic removal is designated to be 5.5. However, the optimum pH set point for optimum membrane performance is 7.0.

Abstract: The present discloses a method and a device for biogenic waste, or bio-waste treatment, and said method is as follows: Firstly, the biogenic waste is evenly mixed with water vapor, or steam, heating and pressurizing so that the temperature reaches 130-190° C. and the pressure reaches 1.5-1.9 MPa after mixture, and this state is maintained for 1-25 minutes; Then, the pressure of the mixture of said biogenic waste and water vapor is reduced to normal pressure, such as atmospheric pressure so as to conduct low-molecularization, such as decreasing or reduction of molecular weight of the biogenic waste to obtain a low-molecularized mixture, such as a low molecular weight mixture; finally, the low-molecularized mixture, such as low-molecular weight mixture is separated so as to obtain the final products. Said device includes reaction vessel, stirring device, vapor input device, pressure-reducing regulator and separation device.

Abstract: A lubricant additive dispensing apparatus comprising a base providing a manifold distribution to present lubricant to a series of dispensing chambers. The dispensing chambers are fabricated having a porous sidewall formed in a tubular shape. Additive is stored within a reservoir formed by the tubular shape. A delivery piston is provided proximate and in fluid communication with the manifold. The lubricant applies pressure to the delivery piston. The delivery piston applies pressure to the stored additive. The pressure forces a small volume of additive to pass through the porous sidewall, blending the additive with the flowing lubricant. The reservoir can be formed between an outer tubular member and an inner tubular member. Lubricant can pass through an interior of the inner tubular member, exiting a flow discharge port located proximate an end cap assembled to a distal end of the reservoir.

Abstract: Provided is an apparatus for treating by itself an organic waste material which can treat the waste material with steam having a high temperature and a high pressure and which can separate and recover the waste material and a liquid material given by performing the treatment continuously by a simple operation. An apparatus (10) for treating an organic waste material characterized in that it comprises a sealed vessel (12) having a closed space (S1) for holding an organic waste material therein, a steam jet means (14) provided in the sealed vessel (12) for providing a steam jet having such temperature and pressure that the waste material can be carbonized, a discharge port (16) arranged at the bottom of the sealed vessel (12) and having an opening/closing mechanism, and a separating and recovering means (18) for separating the waste material and a liquid material given after the treatment only by direct discharge operation from the discharge port (16) and recovering the waste material and the liquid material.

Abstract: This invention refers to a single household waste water treatment plant, based on the SBR principle that uses two tanks, one lung tank (1) and one SBR reactor (2), allowing the significant reduction of size, and in consequence, a low consumption of power, as well as the reduction of transportation volume when several units are transferred, wherein said lung tank (1) and said SBR reactor (2) consist of one truncated cone shape external tank and one internal tank, also with truncated cone shape, wherein the internal tank has lower diameters than the external tank, wherein bases of both tanks are concentric, upon which both tanks generate two volumes, an internal volume that corresponds to the SBR reactor (2), and one external volumetric ring, that will correspond to the lung tank (1); wherein the SBR reactor has in its aeration zone duct (7) supported on legs (12), wherein such duct (7) consists of a truncated cone shaped base (13), in which upper part protrudes a cylinder (14), that will extend to the minimum

Abstract: The present invention provides simple and an accurate apparatuses for forming bilayer membranes by the contact of amphipathic monolayers. In one apparatus, amphipathic monolayers are brought into contact and fused by controlling the pressure of liquids introduced from microchannels forming an intersection containing a chamber. In another apparatus, the chamber includes a number of compartments and at least one construction portion. In this apparatus, a droplet is formed within each compartment and contact of amphipatic monolayers is accomplished by adjusting the size of the droplets.

Abstract: A liquid recovery system and methods of recycling water from liquid-solid mixture such as slurry produced by pavement grinding machines, drilling fluid containing cuttings, and septage. The system includes a storage tank or a settling tank, a centrifuge in flow communication with the storage tank or settling tank, such as a hydraulic centrifuge, a solids storage component, and a cleaned liquid storage tank in flow communication with the centrifuge. The system may also include a porous conveyor belt for removal of large solids from the mixture prior to centrifugation and may also include one or more blowers directed at the porous conveyor.

Abstract: An apparatus for a programmable self sanitizing water dispenser apparatus with a digital controller as well as a programmable method for generating ozone for cleaning the reservoir and the water contained within it. The apparatus includes an anti-spill receiver that houses the controller and that can contain a ozone generator.

Abstract: A method and apparatus is provided for the automated discharge of treated sewage sludge to trucks, via inventory management by tracking the flow of sludge from bins in which it is located to trucks, on a first-in/first-out basis, including automated truck positioning, automated precision truck loading and monitoring and controlling the various interrelated components via a PLC computer program.

Abstract: A process for affecting reductive conversion reactions in a reactor using the palladized bacterial cellulose immobilized on a support for reductive conversion reactions in a reactor.

Abstract: A dechlorinator for dechlorinating a stream of water comprises a housing comprising an inlet and an outlet. The housing defines a flow path between the inlet and the outlet. A filter is operatively supported in the housing and located in the flow path. At least one dechlorinating tablet is operatively supported in the housing and located in the flow path downstream of the filter for dechlorinating water flowing from the filter to the outlet.

Abstract: One embodiment of a method to system for enhancing TOC removal while maintaining membrane filter performance is the implementation of a dual pH control system. This embodiment will enhance the ability to maximize TOC removal while maintaining optimum membrane filter performance. By adjusting pH, dosing a chemical coagulant and incorporating liquid-solids separation, a considerably higher degree of TOC removal is possible. By adjusting pH again after liquid-solids separation this embodiment can drastically increase the efficiency of the membrane microfiltration/ultrafiltration system. Thus pH control for soluble organic removal is critical. This pH level however may not be the ideal set point for minimizing membrane fouling which is the basis for this embodiment. An example: the pH set point for optimum soluble organic removal is designated to be 5.5. However, the optimum pH set point for optimum membrane performance is 7.0.

Abstract: A system and process for continuously and immediately removing contaminants from wastewater and treating wastewater, where the wastewater is treated to supply fluid that can be reused in the cleaning system or discharged safely into the environment is disclosed. The system and method comprises one or more pumping means for circulating and recirculating fluids captured or collected by the system to one or more of the processes in the system, such as wash water applications or further treatment cycles. According to one embodiment, the wastewater is transported through purification sections of the device. Depending on the system used, these sections could include several of the following: pretreatment to remove debris and certain heavy solids; treatment by methods such as a conductivity solution injection system and/or electrolytic coagulation system, a polymer injection system, and a inline mixer for mixing the polymer in the wastewater stream; and an ozone treatment system.

Abstract: Arsenic is removed from water and other aqueous feeds by (1) treating the feed with a compound containing cerium in the +4 oxidation state, preferably cerium dioxide, to oxidize arsenic in the +3 oxidation state to arsenic in the +5 oxidation state and (2) removing the arsenic in the +5 oxidation state from the aqueous phase, normally by contacting the treated feed with alumina or other precipitating agent containing cations in the +3 oxidation state.

Abstract: A method and system for processing fluoride-containing wastewater includes treating the wastewater with brine (waste) created by the regeneration process implemented by in ion exchanging water softener. The brine, which is typically disposed of, contains both calcium and magnesium salts, in varying concentrations and ratios. The regeneration process brine is added to the fluoride-containing wastewater within a reaction tank, and the fluoride ion concentration is monitored. When the fluoride ion concentration falls below a predetermined level (e.g., 15 ppm), the flow of regeneration process brine is stopped. A pH controller monitors the pH within the reaction tank, and adds a basic agent to ensure that the pH remains above a predetermined level (e.g., pH>9). The pH control results in a clear effluent, and a sludge having a high settling rate and a high dewater ability.

Abstract: A chemical feeder for producing a solution of dissolved chemical material that includes a hopper, a pump, a water supply line that extends from the pump, a chemical solution preparation unit that has a reservoir and a dissolution device and a dilution control device that are each connected to the water supply line. The dissolution device has a spray manifold to spray water towards the hopper that contains solid chemicals to contact and dissolve the chemical material. The dilution control device sprays water in a direction opposite the spray manifold and into the reservoir to aid in adjusting the concentration of a chemical solution and to arrive at a desired chemical concentration range. Thus, the dilution control device allows the chemical feeder to be used in a wide range of applications.

Abstract: The invention is an apparatus and method for treating fluid in a pool, spa, or water tank, etc., using ozone and treated air. A fluid filter is placed in an auxiliary reservoir or a smaller fluid tank located in or next to the pool, spa, or main water tank. An ozone generator pumps a combination of ozone and air into the smaller fluid tank. Fluid in the smaller fluid tank passes through a filter and back into the main reservoir without the use of any fluid pump. More specifically, a vertical lift tube is placed beneath the smaller fluid tank so that the open top of the lift tube is within the smaller fluid tank. Fluid from the main reservoir is piped to the bottom of the lift tube. Ozone and air from the ozone generator is also piped into the lift tube near its bottom. The fluid flows through the filter due to the effect of ozone and air bubbles released by a diffuser at the bottom of the lift tube.

Abstract: A system for enhancing an activated sludge process including at least one biological reactor. A weighting agent impregnation subsystem is coupled to the biological reactor for mixing biological flocs and weighting agent to impregnate the weighting agent into the biological flocs to form weighted biological flocs. A weighting agent recovery subsystem is configured to recover the weighting agent from the weighted biological flocs and reintroducing the recovered weighting agent to the weighting agent impregnation subsystem.

Abstract: Apparatus and systems for water treatment, as well as methods for treating water, are provided. An apparatus for water treatment may include one or more reactors configured for water treatment, one or more light sources configured to provide ultraviolet light inside the one or more reactors, a photocatalyst positioned in each of the one or more reactors and configured to receive the ultraviolet light from the one or more light sources, and a pure oxygen source coupled to the one or more reactors and configured to supply pure oxygen to the water.

Abstract: Apparatus including a receptacle for holding therein organic waste, a first dispenser operative to dispense an oxidizing agent to the organic waste so as to cause an exothermic reaction that results in combustion of the organic waste, and a second dispenser operative to dispense a reducing agent that neutralizes a residual amount of the oxidizing agent that remains after the exothermic reaction.

Abstract: This invention reveals to the public the centralized sump oil and acid oil treatment process and system. The process consist of (1) the filter; (2) entry to reaction kettle, the sodium carbonate solution added at the time of air floatation till PH value keeps about 6.0-8.0; and emulsion splitter and flocculating agent added for further reaction; (3) suspension of air floatation and static settlement; (4) the international crude oil is collected after the detergent oil at the upper level of the reaction kettle is dehydrated under normal and reduced pressure; the wastewater is drained after filtering by the natural oil removal tank and the oil-water filter; the sludge is solidified by the cement and the quick lime and aluminium oxide are used as the coagulant aid for solidifying the sludge.