CN109179547B

CN109179547B - Oily sewage oil removing device capable of achieving landscape water body treatment standard

Info

Publication number: CN109179547B
Application number: CN201811211447.8A
Authority: CN
Inventors: 管先炳
Original assignee: Suzhou Qianzheng Technology Consulting Co ltd
Current assignee: Suzhou Qianzheng Technology Consulting Co ltd
Priority date: 2018-10-17
Filing date: 2018-10-17
Publication date: 2021-03-23
Anticipated expiration: 2038-10-17
Also published as: CN109179547A

Abstract

The invention relates to an oil removing device for oily sewage, which can reach the landscape water body treatment standard, and comprises: the ultrasonic vibration generator comprises a plate body which is a rectangular plate, wherein a cavity is arranged in the plate body, an ultrasonic generator is arranged in the cavity, a plurality of interference moving rods are arranged on the outer walls of two sides of the cavity, and each interference moving rod is a circular tube with one spherical end and the other end arranged in the plate body and communicated with the cavity; the silicone rubber sleeve is sleeved outside the disturbance rod, a suede is integrally formed on the silicone rubber sleeve, fluff of the suede is needle-shaped, and annular bulges are sequentially arranged on the fluff along the length direction of the fluff; still include power, air heating device and base: the invention utilizes ultrasonic waves and vibration generated by the ultrasonic waves to remove oil, has small occupied area, low cost, low energy consumption and high efficiency, does not need to pump sewage for multiple times, does not need large complete sets of supporting facilities, and is convenient to disassemble and assemble; part of domestic sewage and production wastewater containing oil and having low pollution can be directly used for agricultural irrigation, landscape water bodies and the like after being treated by the method.

Description

Oily sewage oil removing device capable of achieving landscape water body treatment standard

Technical Field

The invention belongs to the field of sewage treatment, and particularly relates to an oil-containing sewage oil removal device capable of meeting the landscape water body treatment standard.

Background

The oil substance generally exists in three states of floating oil (oil drops with the grain diameter of more than 100 mu m are easy to float up), dispersed oil (oil drops with the grain diameter of between 10 and 100 mu m are suspended in water) and emulsified oil (oil drops with the grain diameter of less than 10 mu m are in an emulsified state).

Oily wastewater can have adverse effects on human production and life, animals, plants and even the whole ecosystem:

the wastewater containing the emulsified oil can be settled together with suspended particles and iron scales in the wastewater in process facilities and pipeline equipment to form oil sludge with larger viscosity, so that pipelines and equipment are blocked to influence the normal production.

The influence of oil substances on the environment is manifold, such as polluting a water body, forming an oil film on the water surface, and being capable of preventing the reoxygenation of the water body, wherein the photosynthesis of algae is limited due to the reduction of dissolved oxygen in the water body, so that the normal growth of aquatic organisms is influenced, aquatic animals and plants have oil smell or toxicity, even the water body is smelled, and the utilization value of water resources is damaged; oil adheres to fish gills and can suffocate the fish, and the fish cannot survive when the concentration is 200 mg/L; can be adhered to algae and plankton to kill them; the oil can inhibit the water bird from laying eggs and hatching, and in severe cases, the water bird can die in large quantity; the method is characterized in that the farmland is irrigated by oily wastewater, oil and derivatives thereof cover the surfaces of soil and plants, block the pores of the soil, prevent air from permeating, prevent the soil and microorganisms from being metabolized normally, reduce the quality and the practical value of agricultural products, cause crop reduction or death in severe cases, and cause serious groundwater pollution by downward migration of the oil in the soil.

At present, oil scum in sewage of oil refining enterprises, floating oil in steel casting and cutting processing, animal and vegetable oil in catering domestic sewage and the like are all organic pollutants which are difficult to remove and degrade, floating oil in the sewage is basically removed after oil separation treatment is carried out on the oil-containing wastewater, and dispersion oil and emulsified oil with smaller liquid drops which are difficult to treat, and the main treatment methods at present are an acidification method, an air floatation method and a demulsification method; the method needs special large-scale professional equipment for treatment such as a hydrolysis acidification tank, a BAF filter tank, a demulsification device, an air flotation tank and the like, but each of the devices is a facility group with large floor area, high engineering cost and large labor force, if standard improvement is involved and old-recycling transformation is needed, the transformation process needs long-time shutdown of the whole treatment system, which is quite difficult for the established sewage treatment facility, and at present, no simple, convenient and efficient movable ultrasonic purification treatment equipment for effectively removing the dispersed oil and emulsified oil exists.

Disclosure of Invention

The invention aims to provide an oil removing device capable of efficiently treating oily sewage.

Another object of the present invention is to provide a low-noise oil removing apparatus for purifying oil components difficult to separate in sewage by ultrasonic waves.

In order to solve the technical problem, the invention discloses an oil removing device for oily sewage, which can reach the landscape water body treatment standard and comprises:

the ultrasonic vibration generator comprises a plate body which is a rectangular plate, wherein a cavity is arranged in the plate body, an ultrasonic generator is arranged in the cavity, a plurality of interference moving rods are arranged on the outer walls of two sides of the cavity, and each interference moving rod is a circular tube with one spherical end and the other end arranged in the plate body and communicated with the cavity; the ultrasonic wave can make the disturbance stick produce the swing, and the disturbance stick and its globular one end can increase the area of contact with the water. Because the oil drops with different sizes have different relative vibration speeds and are mutually collided, rubbed and bonded, the probability of mutual contact and fusion of the oil drops in the sewage is greatly increased, the small oil drops are promoted to be fused into the large oil drops, and the suspension state is changed to float.

The silicone rubber sleeve is sleeved outside the disturbance rod, a suede is integrally formed on the silicone rubber sleeve, fluff of the suede is needle-shaped, and 2-5 annular bulges are sequentially arranged on the fluff along the length direction of the fluff; the silicon rubber has better conductivity to the ultrasonic wave, and can better attenuate in the ultrasonic wave conduction process; the contact area between the needle-shaped villus and a water body is greatly increased, the end part of the needle-shaped villus can generate low-frequency swing with larger amplitude under the action of ultrasonic waves, the increase of water body communication near a disturbance rod is facilitated, and the fusion and floating of oil drops are promoted; the arrangement of the plurality of annular bulges on the fluff increases the contact area between the fluff and sewage, and in the process of ultrasonic transmission and fluff swinging, the fluff can drive a small part of water body among the annular bulges to extrude all around to form instantaneous pressure, thereby being beneficial to the fusion of oil drops.

The power supply is arranged on the upper side edge of the plate body and comprises a power line and a controller with a switch, and the controller is connected with the ultrasonic generator;

an air heating device: the air heating device is arranged on the lower side edge of the plate body and is connected with the controller through a control circuit, and the air heating device comprises an air inlet pipe, an air pump, a heating part and an exhaust pipe which are sequentially arranged; air enters the air inlet pipe under the action of the air pump, is heated by the heating part and then flows out of the exhaust pipe arranged along the side wall of the plate body; a plurality of air outlet holes with the diameter of 0.1-0.5mm are formed in the exhaust pipe; the air heating device can play a role similar to an air floatation method, promotes convection and exchange of water flow around the plate body, can be attached to the surface of oil drops, promotes condensation and floating of the oil drops in water, and the instant high temperature and energy released by reduction, splitting and crushing of bubbles in the floating process are favorable for destroying a surfactant wrapped around the oil drops and promoting small oil drops to be fused into large oil drops.

The base is arranged at two corners of the lower side of the plate body. The oil removing device can remove oil in a stable standing posture.

Preferably, the air heating means may heat the air to 70-120 ℃. The high-temperature air heats the encountered oil drops for a short time in the floating process, the temperature of the bubbles is reduced rapidly, and more energy is released when the bubbles are broken, so that the oil drops can be fused and float.

Preferably, the length of the fluff of the suede is 0.5-2 cm. The excessively long fluff makes the surface of the plate body easy to remain and difficult to clean, and the excessively short fluff reduces the contact area between the fluff surface and sewage, which can result in the reduction of the oil removal effect.

Preferably, the non-installation disturbing rod part outside the plate body is adhered with a high-density polyurethane cotton sound insulation layer with the surface subjected to oleophobic treatment. The high-density polyurethane cotton sound insulation layer with the oleophobic surface has the functions of corrosion resistance and noise reduction.

The disturbance rod is made of stainless steel or aluminum alloy, is 10-20cm long and 0.8-2cm in inner diameter, and is filled with 2/3-3/4 volume glass beads; the diameter of the glass beads is 1/5-1/2 of the inner diameter of the disturbance rod, the disturbance rod is arranged at an opening at one end in the plate body, a wire mesh is installed at the opening, and the glass beads are sealed in the disturbance rod. The loosely arranged glass beads impact each other under the action of ultrasonic waves, so that the disturbance rod generates vibration with larger amplitude and far lower frequency than the ultrasonic waves, the swinging amplitude of the tail end of the fluff on the silicone rubber sleeve is favorably increased, the disturbance effect on sewage is increased, and the fusion of oil droplets is promoted.

The cavity is filled with water, and the ultrasonic wave has good conductivity in the water.

The ultrasonic generator is an ultrasonic generator with the frequency of 20-25kHz and the power of more than 1000w, and ultrasonic waves above 25kHz can cause a water body to generate a cavitation phenomenon and aggravate the emulsification of oil drops.

Preferably, the air inlet pipe is provided with an extension part or is telescopic, and the pipe orifice of the air inlet pipe can be extended to be above the sewage water surface during operation. The air inlet pipe should be installed or placed to prevent sewage from entering.

Preferably, the power supply can control the heating temperature and the air output of the air heating device. The proper adjustment is made according to the difference of the oil content in the sewage and the sewage treatment amount.

Preferably, when the oily sewage with complex components is treated, the oily sewage oil removing device which has two or more different ultrasonic frequencies and the ultrasonic frequency interval of which is more than 3kHz and can reach the landscape water body treatment standard is arranged, so that a better treatment effect can be achieved. The oil drops with different components are sensitive to ultrasonic waves with different frequencies, and a plurality of oil removing devices with high and low frequencies are arranged, so that the treatment effect on sewage containing various oil components can be enhanced.

The invention at least comprises the following beneficial effects:

1. has better purification effect on oily sewage which is static or has the flow velocity less than 0.1 m/s.

2. The oil-removing agent can be directly used for agricultural irrigation, landscape water bodies and the like after the oil-containing low-pollution domestic sewage and production wastewater are subjected to oil removal treatment.

3. The ultrasonic wave and the vibration generated by the ultrasonic wave are utilized to remove oil, the occupied area is small, the cost is low, the energy consumption is low, the efficiency is high, sewage does not need to be pumped for many times, large complete sets of supporting facilities are not needed, the assembly and disassembly are convenient, and the ultrasonic wave oil-removing device is suitable for the treatment of oil removal, emulsion breaking and the like of domestic sewage, and the sewage produced by small and medium-sized production enterprises such as catering hotels, oil refining and the like.

4. High-temperature bubbles are used as an auxiliary agent in the ultrasonic oil removing process, so that the oil removing effect is better.

Drawings

FIG. 1 is a sectional front view of an oil-containing sewage oil removing device which can meet the standard of landscape water treatment.

FIG. 2 is a sectional side view of an oil-contaminated water removal apparatus that meets the standards for treatment of landscape water.

FIG. 3 is a schematic view of a perturbation rod structure.

Fig. 4 is a partially enlarged view.

Detailed Description

The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," when used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

Example 1

As shown in fig. 1 to 4, an oil removing apparatus for oily sewage that can meet the standard of landscape water treatment, comprises:

plate body 1: the ultrasonic vibration generator is a rectangular plate, a cavity 101 is arranged in the rectangular plate, an ultrasonic generator 2 is arranged in the cavity, a plurality of interference moving rods 3 are arranged on the outer walls of two sides of the cavity, one end of each interference moving rod is spherical, and the other end of each interference moving rod is arranged in the plate and communicated with the cavity;

the silicone rubber sleeve 4 is sleeved outside the disturbance rod, a suede 5 is integrally formed on the silicone rubber sleeve, fluff 501 of the suede is needle-shaped, and 2 annular bulges 502 are sequentially arranged on the fluff along the length direction of the fluff;

the power supply 6 is arranged on the upper side edge of the plate body 1, and comprises a power line and a controller with a switch, wherein the controller is connected with the ultrasonic generator;

air heating device 7: the air heating device is arranged on the lower side edge of the plate body 1 and is connected with the controller through a control circuit, and the air heating device comprises an air inlet pipe 701, an air pump, a heating part 702 and an air outlet pipe 703 which are sequentially arranged; air enters an air inlet pipe 701 under the action of an air pump, is heated by a heating part and then flows out of an air outlet pipe 703 arranged along the side wall of the plate body; a plurality of air outlet holes with the diameter of 0.1-0.5mm are formed in the exhaust pipe;

base 8: which is arranged at two corners of the lower side of the plate body.

The air heating device 7 can heat the air to 70-120 ℃.

The length of the fluff 501 of the suede 5 is 1 cm.

The non-installation disturbance rod part outside the plate body 1 is provided with a high-density polyurethane cotton sound insulation layer 9 with the surface subjected to oleophobic treatment.

The disturbance rod 3 is made of stainless steel or aluminum alloy, is 10-20cm long and 0.8-2cm in inner diameter, and is filled with 3/4-volume glass beads 301; the diameter of the glass beads is 1/5-1/2 of the inner diameter of the disturbance rod 3, the disturbance rod is arranged at an opening at one end in the plate body, a wire mesh 302 is installed at the opening, and the glass beads 301 are sealed in the disturbance rod 3.

The cavity 101 is filled with water.

The ultrasonic generator 2 is an ultrasonic generator with the frequency of 20kHz and the power of more than 1000 w.

The air inlet pipe 701 is provided with an extension part or can be stretched and retracted, and the pipe orifice of the air inlet pipe can be extended above the sewage water surface during working.

The power supply 6 can control the heating temperature and the air output of the air heating device 7.

When the oily sewage with complex components is treated, the oily sewage oil removing device which has two or more different ultrasonic frequencies and the ultrasonic frequency interval of which is more than 3kHz and can reach the landscape water body treatment standard can be used for obtaining better treatment effect.

Example 2

The first oily sewage oil removal device which can reach the landscape water body treatment standard in the embodiment 1 and the second ultrasonic generators with the power of 1000w and the frequency of 20kHz and 25kHz are respectively used, the first oily sewage oil removal device and the third oily sewage oil removal device are respectively placed in 100L catering sewage (sewage generated during production and cleaning of a cake room) which is subjected to primary oil removal treatment by an oil-water separator, the content of oil which is not separated still reaches 2.4 percent, the first oily sewage oil removal device, the second oily sewage oil removal device and the third ultrasonic generators oil removal device are started, the duration is 1Omin, the first oily sewage oil removal device, the second oily sewage oil removal device and the third ultrasonic generators oil removal device are respectively:

processing apparatus	Oil removal Rate (%)
		First of all	89
Second step	46
		C3	7

Example 3

Using the oily sewage oil removal device a which can reach the landscape water body treatment standard in the embodiment 1, then taking other oily sewage oil removal devices d which can reach the landscape water body treatment standard and are the same as the device a except that the ultrasonic frequency is 25kHz, respectively taking two deck plates, two butyl plates, and one deck plate and one butyl plate, and adopting the method of the embodiment 2 to measure the oil removal rate as follows:

processing apparatus	Oil removal Rate (%)
		Nail, nail	90.5
Diced meat and diced meat	89
		Jiading and Ding	94

Therefore, the oil-containing sewage oil removal device A with high and low ultrasonic frequencies which can reach the landscape water body treatment standard is matched with the oil removal device A, and the oil removal rate is improved.

Example 4

Using the oily sewage oil removal device a which can reach the landscape water treatment standard in the embodiment 1, and taking an oily sewage oil removal device a 0 which turns off the air heating device and can reach the landscape water treatment standard, the oil removal rate is measured by the method of the embodiment 2 as follows:

processing apparatus	Oil removal Rate (%)
		First of all	89
First 0	73

Therefore, the high-temperature bubbles are beneficial to improving the oil removing effect of the oily sewage oil removing device A which can reach the landscape water body treatment standard.

Example 5

The method is characterized in that the production wastewater of a foundry is less in pollutants and single in pollution component, but contains more oil used in the production processes of cleaning, demolding, polishing and the like, and cannot be directly used for landscape water bodies after surface oil removal treatment.

The oily sewage oil removal device A which can reach the landscape water body treatment standard in the embodiment 1 is used for removing oil from the production wastewater of the factory at the flow rate of less than 0.1m/s, standing for 1h, skimming the oily water body on the surface layer, using the treated production wastewater in an artificial pond of a nearby park, finding that the surface of the treated production wastewater is free of oil stains after being used for nearly one month, and the treated production wastewater is basically free of peculiar smell, does not influence the growth of animals and plants in the water body, is not easy to blacken and stink without changing the water body for a long time, has small difference with the water of the landscape water body of a normal pond, and can be completely used as the water of the artificial pond.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.

Claims

1. An oily sewage oil removal device capable of reaching landscape water body treatment standards is characterized by comprising:

the ultrasonic vibration generator comprises a plate body which is a rectangular plate, wherein a cavity is arranged in the plate body, an ultrasonic generator is arranged in the cavity, a plurality of interference moving rods are arranged on the outer walls of two sides of the cavity, and each interference moving rod is a circular tube with one spherical end and the other end arranged in the plate body and communicated with the cavity;

the silicone rubber sleeve is sleeved outside the disturbance rod, a suede is integrally formed on the silicone rubber sleeve, fluff of the suede is needle-shaped, and 2-5 annular bulges are sequentially arranged on the fluff along the length direction of the fluff;

the air heating device is arranged on the lower side edge of the plate body and is connected with the controller through a control circuit, and the air heating device comprises an air inlet pipe, an air pump, a heating part and an exhaust pipe which are sequentially arranged; air enters the air inlet pipe under the action of the air pump, is heated by the heating part and then flows out of the exhaust pipe arranged along the side wall of the plate body; a plurality of air outlet holes with the diameter of 0.1-0.5mm are formed in the exhaust pipe;

the base is arranged at two corners of the lower side of the plate body.

2. The oil removing device for oily sewage reaching the landscape water treatment standard of claim 1, wherein the air heating device can heat the air to 70-120 ℃.

3. The oil removing device for oily sewage reaching the landscape water body treatment standard of claim 1, wherein the pile length of the pile surface is 0.5-2 cm.

4. The oil removing device for oily sewage according to the landscape water treatment standard of claim 1, wherein a high-density polyurethane cotton sound insulation layer with the surface subjected to oleophobic treatment is attached to the non-installation disturbance rod part on the outer side of the plate body.

5. The oil removing device for oily sewage reaching the standard of landscape water treatment of claim 1, wherein the disturbance rod is made of stainless steel or aluminum alloy, has a length of 10-20cm and an inner diameter of 0.8-2cm, and is filled with 2/3-3/4 volume of glass beads; the diameter of the glass beads is 1/5-1/2 of the inner diameter of the disturbance rod, the disturbance rod is arranged at an opening at one end in the plate body, a wire mesh is installed at the opening, and the glass beads are sealed in the disturbance rod.

6. The oil removing device for oily sewage reaching the landscape water treatment standard of claim 1, wherein the cavity is filled with water.

7. The oil removing device for oily sewage reaching the landscape water body treatment standard according to claim 1, wherein the ultrasonic generator is an ultrasonic generator with the frequency of 20-25kHz and the power of more than 1000 w.

8. The oil removing device for oily sewage reaching the standard of landscape water treatment according to claim 1, wherein the air inlet pipe is provided with an extension part or is telescopic, and the orifice of the air inlet pipe can be extended above the sewage surface during operation.

9. The oil removing device for oily sewage meeting the landscape water treatment standard of claim 1, wherein the power supply can control the heating temperature and the air output of the air heating device.

10. The oil removing device for oily sewage reaching the standard of landscape water treatment according to claim 1, wherein when treating oily sewage with complex composition, the oil removing device for oily sewage reaching the standard of landscape water treatment, which has the ultrasonic frequency interval of more than 3kHz, is provided to achieve better treatment effect.