CN106219670B - Continuous high-efficient treatment facility of metal surface treatment oiliness waste liquid - Google Patents
Continuous high-efficient treatment facility of metal surface treatment oiliness waste liquid Download PDFInfo
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- CN106219670B CN106219670B CN201610723211.7A CN201610723211A CN106219670B CN 106219670 B CN106219670 B CN 106219670B CN 201610723211 A CN201610723211 A CN 201610723211A CN 106219670 B CN106219670 B CN 106219670B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
- C10G53/08—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only including at least one sorption step
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/10—Lubricating oil
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Abstract
The invention provides a continuous high-efficiency treatment device for treating oily waste liquid on a metal surface, which comprises a control device, a storage tank, a pressure pump, a preheating tank and a distillation tank, wherein the storage tank, the pressure pump, the preheating tank and the distillation tank are sequentially connected; the top of the distillation tank is connected with a vacuum pump, and the lower part of the distillation tank is connected with a waste oil treatment device; the pressure pump, the preheating tank, the distillation tank, the vacuum pump and the waste oil treatment device are respectively connected with the control device. The continuous high-efficiency treatment equipment for the oily waste liquid of the metal surface treatment has the advantages of simple structure, convenience in use and low cost, can realize continuous treatment of the oily waste liquid of the metal surface treatment, has a good treatment effect, and greatly reduces the environmental pollution.
Description
Technical Field
The invention belongs to the field of solid waste treatment, and particularly relates to continuous and efficient treatment equipment for treating oily waste liquid on a metal surface.
Background
In recent years, the economic efficiency of the Yangtze river triangle area is rapidly increased, the industrial production scale is continuously enlarged, the industrial economic efficiency accounts for more than 40 percent of the whole country, and the development of the economic efficiency, particularly the development of the advanced equipment manufacturing industry, becomes the main industry of the industrial economic efficiency of the area.
In addition to pH, COD, SS and petroleum pollutants in the metal surface treatment oily waste liquid, because the metal surface treatment oily waste liquid also contains a surface treatment agent, the surface treatment agent mainly comprises a cleaning agent and an antirust agent, and due to the diversity of the metal surface treatment oily waste liquid, some additives contain a small amount of nitrogen and phosphorus components, such as sodium nitrite in a water-soluble antirust agent and sodium phosphate in an alkaline cleaning agent, and a small amount of metal ions enter the liquid in the metal surface treatment process. Therefore, the treatment of the oily waste liquid of the metal surface treatment is not slow.
The opinion on practical enhancement of hazardous waste supervision work in Jiangsu province proposes that the construction of hazardous waste disposal capacity is accelerated, the hazardous waste disposal capacity is scientifically planned, hazardous waste disposal facilities are optimally adjusted, social participation and technical innovation are guided, a batch of domestic leading and international first-class large-scale hazardous waste utilization and disposal facilities are built, the hazardous waste disposal level is comprehensively improved, and the construction target that the hazardous waste disposal capacity of the whole province is increased by more than 50% compared with that of 2010 in 2015 is achieved.
Disclosure of Invention
The technical problem is as follows: in order to solve the defects of the prior art, the invention provides continuous and efficient treatment equipment for treating the oily waste liquid on the surface of the metal.
The technical scheme is as follows: the invention provides a continuous high-efficiency treatment device for treating oily waste liquid on the surface of metal, which comprises a control device, a storage tank, a pressure pump, a preheating tank and a distillation tank which are connected in sequence; the top of the distillation tank is sequentially connected with a vacuum pump, a condenser and a waste water treatment device, and the lower part of the distillation tank is connected with a waste oil treatment device; the pressure pump, the preheating tank, the distillation tank, the vacuum pump and the waste oil treatment device are respectively connected with the control device.
As an improvement, the waste oil treatment device comprises an oil pump, a sedimentation separation tank, a heating and stirring device and a filter pressing device which are sequentially connected; the wastewater treatment device comprises an adjusting tank, a hydrolysis acidification tank, a contact oxidation tank, a coagulation sedimentation tank, a sand filtration device, an intermediate storage tank and an ultrafiltration device which are connected in sequence.
As a further improvement, the sedimentation separation tank comprises a sedimentation separation tank body, a medicament adding device arranged at the top of the sedimentation separation tank body, and a heating device arranged in the sedimentation separation tank body; the medicament feeding device and the heater are respectively connected with the control device.
As a further improvement, the heating and stirring device comprises a body, a stirring motor, a stirring paddle and a heating device; the stirring motor is arranged at the top of the body and is connected with a stirring paddle arranged in the body; the heating device is arranged in the body; the upper part of the body is provided with a feed inlet, and the lower part of the body is provided with a discharge outlet; the stirring motor and the heating device are respectively connected with the control device.
As a further improvement, the heating and stirring device further comprises a heat-insulating layer, and the heat-insulating layer wraps the outer side wall of the body.
As a further improvement, the stirring paddle is provided with long paddles and short paddles which are arranged in a staggered mode, the end part of each long paddle is provided with an upward flange and a downward flange, and the short paddles are provided with a group of through holes which are arranged in an inclined mode; the heating device is a spiral steam pipeline heating device.
As a further improvement, the filter pressing device comprises a frame, a driving device fixed on the frame, a pressing device connected with the driving device, and a liquid collecting tank arranged at the bottom of the frame; a group of filter plates and filter frames which are arranged alternately are arranged in the pressing device, filter cloth driving devices are arranged on the upper side and the lower side of each filter plate respectively, a circle of filter cloth wraps the filter plates and the filter cloth driving devices, grids are arranged in the filter plates, a liquid outlet communicated with the grids is formed in the bottoms of the filter plates, the filter frames are of hollow structures, and a liquid inlet is formed in the tops of the filter frames; the driving device and the pressing device are respectively connected with the control device.
As another improvement, a steam heating pipe is arranged in the preheating tank.
As another improvement, a liquid level meter is arranged in the distillation tank, and the liquid level meter is connected with a control device).
The invention also provides a treatment method of the oily waste liquid after the metal surface treatment, and the treatment method comprises the following steps of:
(1) Preheating: pumping the waste liquid in the storage tank into a preheating tank, and preheating to 50-60 ℃ through pipeline steam;
(2) And (3) distillation: pumping the preheated waste liquid into a distillation retort, distilling at 90-110 ℃, simultaneously sucking by using a vacuum pump to enable the distillation retort to be in a negative pressure state, and pumping most of water vapor out, condensing and collecting; detecting the liquid level by using a liquid level meter in the distillation retort, stopping the waste liquid from entering the distillation retort when the liquid level in the distillation retort is higher than a specified height, and pumping the waste oil in the distillation retort into a waste oil treatment device for treatment by using an oil pump;
(3) In a waste oil treatment device, waste oil enters a precipitation separation tank for precipitation, then enters a heating and stirring device, is indirectly heated by adopting a method of introducing steam through a built-in spiral pipe, removes water in the waste oil, simultaneously adds a decolorizing agent, and is stirred while being heated, so that jelly, acidic substances, pigments and other impurities in the waste emulsion are adsorbed; then the waste oil after dehydration and decoloration is introduced into a filter pressing device for filter pressing, and degraded fuel oil or lubricating oil is obtained after filter pressing liquid is cooled;
(4) Wastewater treatment: and (3) treating the wastewater distilled in the step (2) in a wastewater treatment device, and recycling the water.
Has the advantages that: the continuous and efficient treatment equipment for the oily waste liquid in the metal surface treatment, provided by the invention, has the advantages of simple structure, convenience in use, low cost, good treatment effect and capability of realizing continuous treatment of the oily waste liquid in the metal surface treatment, and greatly reduces the environmental pollution.
Drawings
FIG. 1 is a schematic structural diagram of the continuous and efficient treatment equipment for treating the oily waste liquid on the metal surface;
FIG. 2 is a schematic view showing the construction of a waste oil treatment apparatus;
FIG. 3 is a schematic structural view of a precipitation separation tank;
FIG. 4 is a schematic structural view of a heating and stirring apparatus;
FIG. 5 is a schematic structural view of a stirring paddle;
FIG. 6 is a schematic view of the filter press apparatus;
FIG. 7 is an enlarged view of a portion of the press.
Detailed Description
The continuous and efficient treatment equipment for the oily waste liquid after the metal surface treatment is further explained below.
The continuous high-efficiency treatment equipment for the oily waste liquid of the metal surface treatment is shown in figure 1, and comprises a control device 7, a storage tank 2, a pressure pump 3, a preheating tank 4 and a distillation tank 5 which are connected in sequence; the top of the distillation tank 5 is sequentially connected with a vacuum pump 6, a condenser 8 and a waste water treatment device 9, and the lower part of the distillation tank is connected with a waste oil treatment device 1; the pressure pump 3, the preheating tank 4, the distillation tank 5, the vacuum pump 6 and the waste oil treatment device 1 are respectively connected with a control device 7.
The waste oil treatment device 1, as shown in fig. 2, comprises an oil pump 10, a sedimentation separation tank 11, a heating and stirring device 12 and a filter pressing device 13 which are connected in sequence. The sedimentation separation tank 11, as shown in fig. 3, comprises a sedimentation separation tank body 111, a medicament adding device 112 arranged at the top of the sedimentation separation tank body 111, and a heating device 113 arranged inside the sedimentation separation tank body 111; the medicament adding device 112 and the heater 113 are respectively connected with the control device 7. The heating and stirring device 12, see fig. 4, includes a body 121, a stirring motor 122, a stirring paddle 123, and a heating device 124; the stirring motor 122 is arranged on the top of the body 121 and is connected with the stirring paddle 123 arranged inside the body 121; the heating device 124 is arranged in the body 121; the upper part of the body 121 is provided with a feed inlet, and the lower part is provided with a discharge outlet; the stirring motor 122 and the heating device 124 are connected to the control device 7, respectively. The heating and stirring device 12 further comprises a heat insulation layer 125, and the heat insulation layer 125 wraps the outer side wall of the body 121. The stirring paddle 123, see fig. 5, is provided with long paddles 126 and short paddles 127 which are arranged in a staggered manner, the end part of the long paddles 126 is provided with an upward flange 128 and a downward flange 128, and the short paddles 127 are provided with a group of through holes 129 which are arranged in an inclined manner; the heating device 124 is a spiral steam pipe heating device.
The wastewater treatment device 9 comprises an adjusting tank 14, a hydrolysis acidification tank 15, a contact oxidation tank 16, a coagulation sedimentation tank 17, a sand filtration device 18, an intermediate storage tank 19 and an ultrafiltration device 20 which are connected in sequence.
The filter pressing device 13, as shown in fig. 6 and 7, comprises a frame 131, a driving device 132 fixed on the frame 131, a pressing device 133 connected with the driving device 132, and a liquid collecting tank 134 arranged at the bottom of the frame; a group of filter plates 135 and filter frames 136 which are arranged alternately are arranged in the pressing device 133, filter cloth driving devices 137 are respectively arranged on the upper side and the lower side of each filter plate 135, a circle of filter cloth 138 wraps the filter plates 135 and the filter cloth driving devices 137, a grating 139 is arranged in each filter plate 135, a liquid outlet 140 communicated with the grating 139 is arranged at the bottom of each filter plate 135, each filter frame is of a hollow structure, and a liquid inlet 130 is arranged at the top of each filter frame; the driving device 132 and the pressing device 133 are connected to the control device 7.
A steam heating pipe is arranged in the preheating tank 4.
A liquid level meter is arranged in the distillation retort 5 and is connected with a control device 7.
The method for treating the metal surface treatment oily waste liquid by using the equipment comprises the following steps:
(1) Preheating: pumping the waste liquid in the storage tank into a preheating tank, and preheating to 50-60 ℃ through pipeline steam;
(2) And (3) distillation: pumping the preheated waste liquid into a distillation retort, distilling at 90-110 ℃, simultaneously pumping by using a vacuum pump to ensure that the interior of the distillation retort is in a negative pressure state, and pumping most of water vapor away, condensing and collecting; detecting the liquid level by using a liquid level meter in the distillation retort, stopping the waste liquid from entering the distillation retort when the liquid level in the distillation retort is higher than a specified height, and pumping the waste oil in the distillation retort into a waste oil treatment device for treatment by using an oil pump;
(3) In a waste oil treatment device, waste oil firstly enters a precipitation separation tank for precipitation, then enters a heating and stirring device, waste emulsion is indirectly heated by adopting a method of introducing steam through a built-in spiral pipe, water in the waste oil is removed, simultaneously a decolorizing agent is added, heating and stirring are carried out simultaneously, and jelly, acidic substances, pigments and other impurities in the waste emulsion are adsorbed; then the waste oil after dehydration and decoloration is introduced into a filter pressing device for filter pressing, and degraded fuel oil or lubricating oil is obtained after filter pressing liquid is cooled;
(4) Wastewater treatment: and (3) treating the wastewater distilled in the step (2) in a wastewater treatment device, and recycling the water.
The working principle of the wastewater treatment device is as follows:
the effluent enters an adjusting tank, the adjusted effluent is transferred into a hydrolysis acidification tank for hydrolysis acidification, and macromolecular organic matters are decomposed into micromolecular organic matters, so that the biodegradability of the wastewater is improved; the effluent enters a contact oxidation tank, combined fillers are arranged in the tank, microorganisms in the tank grow on the fillers to form a biological film, organic matters in the wastewater are adsorbed and purified through the biological film, and the effluent of the contact oxidation tank enters a coagulative precipitation tank; an adsorption reaction zone is arranged at the front end of the sedimentation tank, a small amount of powdered activated carbon is firstly added to adsorb benzene series in the wastewater, the adsorption reaction is designed to stay for 1 hour, the effluent of the adsorption zone enters a coagulation reaction zone, and under the action of a coagulant, colloid and fine suspended matters in the wastewater are coagulated into floccules, so that the sensory indexes of water quality such as turbidity, chromaticity and the like of raw water can be reduced, and various toxic and harmful pollutants can be removed; sludge generated by the hydrolysis acidification tank, the contact oxidation tank and the coagulating sedimentation tank enters a sludge tank for plate-and-frame filter pressing; the effluent of the coagulating sedimentation tank automatically flows into a sand filter device, the wastewater is filtered by quartz sand to remove impurities in the water, and the effluent part automatically flows into an ultrafiltration device.
The functions of each device are as follows:
a regulating pool: collecting various waste water, homogenizing water quality and regulating water quantity. The adjusting tank is provided with an air stirring system, and the effluent of the adjusting tank is respectively lifted to two hydrolysis acidification tanks by a pump.
A hydrolysis acidification pool: the aerobic tank is matched for denitrification and dephosphorization, so that macromolecular organic matters are decomposed into micromolecular organic matters, and the biodegradability of the wastewater is improved. The sewage is pretreated in the hydrolysis acidification tank and then automatically flows into the two contact oxidation tanks respectively, and the generated sludge is lifted to the sludge tank.
A contact oxidation pond: the combined filler is arranged in the tank, microorganisms in the tank grow on the filler to form a biological film, and organic matters in the wastewater are adsorbed and purified through the biological film. The effluent of the contact oxidation tank enters a coagulating sedimentation tank, the generated sludge enters a sludge tank, and the nitrifying liquid flows back to the hydrolysis acidification tank.
A coagulating sedimentation tank: the front end of the sedimentation tank is provided with an adsorption reaction area, a small amount of powdered activated carbon is added firstly, benzene series in the wastewater is adsorbed and treated, the adsorption reaction design is kept for 1 hour, the effluent of the adsorption area enters a coagulation reaction area, and under the action of a coagulant, colloids and fine suspended matters in the wastewater are condensed into floccules, so that the sensory indexes of water quality such as turbidity and chromaticity of raw water can be reduced, and various toxic and harmful pollutants can be removed. The effluent of the sedimentation tank automatically flows into an intermediate storage tank and is lifted to a sand filtration system by a pump.
A sand filtration device: the waste water is filtered by quartz sand to remove impurities in the water, part of the effluent automatically flows into an intermediate storage tank and is lifted to an ultrafiltration system by a pump, and part of the mixed production waste water is discharged through a connecting pipe.
An ultrafiltration device: and removing large-particle colloidal pollutants in the wastewater by using the separation effect of the ultrafiltration membrane. And returning the concentrated solution of the ultrafiltration system to the regulating tank for treatment. The effluent of the ultrafiltration system is reused for production.
The equipment is used for treating the oily waste liquid of the metal surface treatment.
The quality of the influent water is shown in Table 1.
TABLE 1
The quality of the distilled water is shown in Table 2.
TABLE 2
| / | CODcr | Petroleum products | Total nitrogen | Total phosphorus | LAS |
| Inflow water | 80000 | 600 | 2000 | 100 | 600 |
| Discharging water | 2000 | 6 | 40 | 2 | 30 |
| Removal Rate (%) | 97.5％ | 99％ | 98％ | 98％ | 95％ |
The quality of the treated effluent is shown in Table 3.
TABLE 3
| / | CODcr | Petroleum products | Total nitrogen | Total phosphorus | LAS | Benzene series compound |
| Inflow water | 420 | 10 | 9 | 0.9 | 2 | 2.5 |
| Discharging water | 300 | 3 | 9 | 0.5 | 0.8 | 0.4 |
| Removal Rate (%) | 29％ | 70％ | - | 40％ | 60％ | 85％ |
Claims (1)
1. A treatment method of metal surface treatment oil-containing waste liquid is characterized in that: the continuous and efficient treatment equipment for treating the oily waste liquid by utilizing the metal surface comprises a control device (7), a storage tank (2), a pressure pump (3), a preheating tank (4) and a distillation tank (5) which are connected in sequence; the top of the distillation tank (5) is sequentially connected with a vacuum pump (6), a condenser (8) and a waste water treatment device (9), and the lower part of the distillation tank is connected with a waste oil treatment device (1); the pressure pump (3), the preheating tank (4), the distillation tank (5), the vacuum pump (6) and the waste oil treatment device (1) are respectively connected with the control device (7);
the waste oil treatment device (1) comprises an oil pump (10), a sedimentation separation tank (11), a heating and stirring device (12) and a filter pressing device (13) which are connected in sequence; the wastewater treatment device (9) comprises an adjusting tank (14), a hydrolysis acidification tank (15), a contact oxidation tank (16), a coagulating sedimentation tank (17), a sand filtering device (18), an intermediate storage tank (19) and an ultrafiltration device (20) which are connected in sequence;
the sedimentation separation tank (11) comprises a sedimentation separation tank body (111), a medicament adding device (112) arranged at the top of the sedimentation separation tank body (111), and a heater (113) arranged inside the sedimentation separation tank body (111); the medicament adding device (112) and the heater (113) are respectively connected with the control device (7);
the heating and stirring device (12) comprises a body (121), a stirring motor (122), a stirring paddle (123) and a heating device (124); the stirring motor (122) is arranged at the top of the body (121) and is connected with a stirring paddle (123) arranged in the body (121); the heating device (124) is arranged in the body (121); the upper part of the body (121) is provided with a feed inlet, and the lower part is provided with a discharge outlet; the stirring motor (122) and the heating device (124) are respectively connected with the control device (7); the heating and stirring device (12) further comprises an insulating layer (125), and the outer side wall of the body (121) is wrapped by the insulating layer (125); the stirring paddle (123) is provided with long paddles (126) and short paddles (127) which are arranged in a staggered mode, the end part of the long paddle (126) is provided with an upward flange (128) and a downward flange (128), and the short paddle (127) is provided with a group of through holes (129) which are arranged in an inclined mode; the heating device (124) is a spiral steam pipeline heating device;
the filter pressing device (13) comprises a frame (131), a driving device (132) fixed on the frame (131), a pressing device (133) connected with the driving device (132), and a liquid collecting tank (134) arranged at the bottom of the frame; a group of filter plates (135) and filter frames (136) which are alternately arranged are arranged in the pressing device (133), filter cloth driving devices (137) are respectively arranged on the upper side and the lower side of each filter plate (135), a circle of filter cloth (138) is wrapped outside each filter plate (135) and each filter cloth driving device (137), a grid (139) is arranged in each filter plate (135), a liquid outlet (140) communicated with the grid (139) is formed in the bottom of each filter plate (135), each filter frame is of a hollow structure, and a liquid inlet (130) is formed in the top of each filter frame; the driving device (132) and the pressing device (133) are respectively connected with the control device (7);
a steam heating pipe is arranged in the preheating tank (4);
a liquid level meter is arranged in the distillation tank (5) and is connected with a control device (7);
the treatment method of the oily waste liquid for metal surface treatment comprises the following steps:
(1) Preheating: pumping the waste liquid in the storage tank into a preheating tank, and preheating to 50-60 ℃ through pipeline steam;
(2) And (3) distillation: pumping the preheated waste liquid into a distillation retort, distilling at 90-110 ℃, simultaneously sucking by using a vacuum pump to enable the distillation retort to be in a negative pressure state, and pumping most of water vapor out, condensing and collecting; detecting the liquid level by using a liquid level meter in the distillation retort, stopping the waste liquid from entering the distillation retort when the liquid level in the distillation retort is higher than a specified height, and pumping the waste oil in the distillation retort into a waste oil treatment device for treatment by using an oil pump;
(3) In a waste oil treatment device, waste oil firstly enters a precipitation separation tank for precipitation, then enters a heating and stirring device, waste emulsion is indirectly heated by adopting a method of introducing steam through a built-in spiral pipe, water in the waste oil is removed, simultaneously a decolorizing agent is added, heating and stirring are carried out simultaneously, and jelly, acidic substances, pigments and other impurities in the waste emulsion are adsorbed; then the waste oil after dehydration and decoloration is introduced into a filter pressing device for filter pressing, and degraded fuel oil or lubricating oil is obtained after filter pressing liquid is cooled;
(4) Wastewater treatment: and (3) treating the wastewater distilled in the step (2) in a wastewater treatment device, and recycling the water.
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| CN107555692A (en) * | 2017-10-25 | 2018-01-09 | 江苏天航水处理有限公司 | A kind of water oil separating method of emulsion waste liquid |
| CN108046471B (en) * | 2017-12-21 | 2020-07-10 | 嵊州市万智网络科技有限公司 | Restaurant wastewater treatment and recycling device |
| CN108083535B (en) * | 2017-12-21 | 2020-05-15 | 广州市方海实业有限公司 | Method for treating and recycling restaurant wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105481181A (en) * | 2015-12-25 | 2016-04-13 | 广东浚丰华科技有限公司 | Wastewater treatment device and treatment method aiming at metal surface treatment plant |
| CN105731706A (en) * | 2016-02-18 | 2016-07-06 | 北京清大国华环境股份有限公司 | Treatment method and device for extremely-high-concentration waste emulsion |
| CN205473247U (en) * | 2016-02-18 | 2016-08-17 | 北京清大国华环境股份有限公司 | High concentration emulsion processing apparatus that gives up |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105481181A (en) * | 2015-12-25 | 2016-04-13 | 广东浚丰华科技有限公司 | Wastewater treatment device and treatment method aiming at metal surface treatment plant |
| CN105731706A (en) * | 2016-02-18 | 2016-07-06 | 北京清大国华环境股份有限公司 | Treatment method and device for extremely-high-concentration waste emulsion |
| CN205473247U (en) * | 2016-02-18 | 2016-08-17 | 北京清大国华环境股份有限公司 | High concentration emulsion processing apparatus that gives up |
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