CN214654022U - Oily wastewater treatment, recovery and purification system - Google Patents
Oily wastewater treatment, recovery and purification system Download PDFInfo
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- CN214654022U CN214654022U CN202120201564.7U CN202120201564U CN214654022U CN 214654022 U CN214654022 U CN 214654022U CN 202120201564 U CN202120201564 U CN 202120201564U CN 214654022 U CN214654022 U CN 214654022U
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Abstract
The utility model discloses an oily waste water treatment, recovery and purification system, this oily waste water treatment, recovery and purification system include except that oil district, receipts oil district and waste oil recovery district, except that the oil district includes oil interceptor, adsorption tank and frizing machine, the receipts oil district is including receiving the oil tank, the waste oil recovery district is provided with booster pump and filter, the oil interceptor is provided with the inlet tube, the oil interceptor with the adsorption tank intercommunication, the adsorption tank is provided with the outlet pipe, frizing machine set up in the oil interceptor is in order to strike off oil on oil interceptor waste water surface, the play oil pipe of frizing machine with receive the oil tank intercommunication, receive the oil tank the oil-out with the booster pump intercommunication, the booster pump with the filter intercommunication, the filter is provided with arranges oil pipe. The utility model provides a difficult recovery of oil slick and contain the problem that emulsified oil waste water is difficult to the retrieval and utilization in the press oily waste water.
Description
Technical Field
The utility model relates to a building materials trade environmental protection field waste water treatment technical field, concretely relates to oily waste water treatment, recovery and purification system.
Background
In the production of building material industry products such as fiber reinforced cement boards, fiber reinforced calcium silicate boards and the like, a steel template matched with a press is generally made of waste engine oil (containing diesel oil) as a release agent, main pollutants in waste water discharged by product extrusion are suspended matters such as petroleum (waste diesel oil, engine oil and the like), organic matters, inorganic salt particles and the like, the pollutant concentration is high, the organoleptic property is poor, and the main pollutant content is as follows:
petroleum products: less than or equal to 1.0 multiplied by 103mg/L；
Total hardness (as CaCO)3In mg/L): less than or equal to 2000 mg/L;
suspended matters: less than or equal to 200 mg/L;
the current situation and the problems of the treatment of the oily wastewater of the press are as follows:
the oily wastewater generally contains oil, and the COD and SS indexes are high generally and greatly exceed the discharge indexes of environmental protection requirements. At present, most enterprises adopt the following methods to solve the problem.
1. When the environmental protection supervision is not strict, most enterprises adopt a steal drainage mode to treat oily water;
2. after strict law enforcement in environmental protection, generally, because the amount of oily wastewater is not very large, a reservoir is generally adopted for storage, and natural oil separation (namely, the upper part is an oil layer, and the lower part is a mixed water layer containing emulsified oil, SS and the like);
3. removing oil by a chemical method, namely adding a demulsifier, PAC and PAM to form flocculent precipitate and treating oily wastewater.
Wherein, the method 1 is not advisable and is suspected of environmental violation; method 2 is only a short-term measure, and the final oil and water is still to be treated; the chemical method 3 is not economical and faces secondary pollution of precipitated sludge.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides an oily waste water treatment, recovery and purification system has solved the problem of the difficult retrieval and utilization of recovery of press oily waste water floating oil.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides an oily waste water treatment, recovery and purification system, this oily waste water treatment, recovery and purification system include except that oil district, oil recovery district and waste oil recovery district, except that oil district includes oil interceptor, adsorption tank and frizing machine, the oil recovery district is including receiving the oil pond, the waste oil recovery district is provided with booster pump and filter, the oil interceptor is provided with the inlet tube, the oil interceptor with the adsorption tank intercommunication, the adsorption tank is provided with the outlet pipe, the frizing machine set up in the oil interceptor is in order to strike off the oil on oil interceptor waste water surface, the play oil pipe of frizing machine with receive the oil pond intercommunication, the oil-out of oil recovery pond with the booster pump intercommunication, the booster pump with the filter intercommunication, the filter is provided with arranges oil pipe.
Furthermore, the oil separation tanks are arranged side by side, one oil scraper is arranged above each oil separation tank, one oil separation tank is provided with the water inlet pipe, the bottom of the other oil separation tank is communicated with the bottom of the adsorption tank, the side walls of the two oil separation tanks are communicated through a first guide pipe, and the first guide pipe rises along the direction of water flow.
Furthermore, the adsorption tanks are two arranged side by side, the middle part of each adsorption tank is provided with a detachable pressing strip, an oil absorption felt and a stainless steel perforated plate from top to bottom, the oil absorption felt is clamped between the detachable pressing strip and the stainless steel perforated plate, one adsorption tank is communicated with the oil separation tank, the upper part of the detachable pressing strip of the other adsorption tank is provided with the water outlet pipe, the two adsorption tanks are communicated, and water flow is discharged from the lower part and the upper part.
Furthermore, the oil receiving pools are arranged side by side, one oil receiving pool is communicated with the oil outlet pipe of the oil scraping machine, the oil outlet of the other oil receiving pool is communicated with the booster pump, the side walls of the two oil receiving pools are communicated through second guide pipes, and the second guide pipes are reduced according to the flowing direction of oil products.
Further, the oily wastewater treatment, recovery and purification system further comprises a control cabinet, and the control cabinet is connected with the oil scraping machine.
Further, the bottom of the oil separation tank, the bottom of the adsorption tank and the bottom of the oil collection tank are provided with drain pipes, and ball valves are arranged on the drain pipes.
The utility model has the advantages of as follows:
the utility model provides a difficult recovery of oil slick and contain the problem that emulsified oil waste water is difficult to the retrieval and utilization in the press oily waste water.
1. The oily wastewater treatment, recovery and purification system of the utility model does not need strong acid, strong alkali and the like and does not generate new pollution;
2. in the oily wastewater treatment, recovery and purification system, the floating oil after oil removal is recovered and purified to reach the oil standard for demoulding of a press template, so that the problem of floating oil pollution is solved, and the cost of the demoulding agent in production is reduced due to the selection and the reuse of the floating oil, thereby generating economic benefit;
3. the oil content of the final effluent of the press oily wastewater treated by the system is less than 30mg/L, and the suspended matter is less than 30mg/L, so that the influence of reuse water on the product quality is basically solved, and the recycling of the press oily wastewater after complete closed-loop treatment is realized;
4. the system can be made of a full stainless steel material, so that the pollution and corrosion of oil and water on the surface of equipment are avoided;
5. the system can adopt the PLC control of the controller, and can realize unattended operation:
6. because the oil removal process of the system adopts an open design, the treatment of oily wastewater with high hardness and easy scaling can be met;
7. the treated wastewater can meet the requirements of producing reuse water in part of industries, and the wastewater discharge is reduced while the water cost is effectively reduced;
8. the recovered and purified waste oil can meet the requirements of steel template demoulding, the waste oil can be recycled, and the comprehensive production cost is effectively reduced while the environmental protection requirements are met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
FIG. 1 is a top view of the oily wastewater treatment, recovery and purification system provided by the present invention;
FIG. 2 is a cross-sectional view in the width direction of the oily wastewater treatment, recovery and purification system provided by the present invention;
FIG. 3 is a longitudinal sectional view of the oily wastewater treatment, recovery and purification system provided by the present invention;
in the figure:
1. an oil removal zone; 11. an oil separation tank; 12. an adsorption tank; 121. a detachable pressing strip; 122. an oil-absorbing felt; 123. a stainless steel perforated plate; 13. an oil scraping machine; 14. a water inlet pipe; 15. a water outlet pipe; 16. an oil outlet pipe; 17. a first conduit; 2. an oil recovery area; 21. an oil collecting pool; 22. a second conduit; 3. a waste oil recovery zone; 31. a booster pump; 32. a filter; 33. an oil discharge pipe; 4. a control cabinet; 5. a blow-off pipe; 6. a ball valve.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1 and 3, the present example provides an oily wastewater treatment, recovery and purification system, the oily wastewater treatment, recovery and purification system comprises an oil removal area 1, an oil collection area 2 and a waste oil recovery area 3, the oil removing area 1 comprises an oil separating tank 11, an adsorption tank 12 and an oil scraper 13, the oil receiving area 2 comprises an oil receiving tank 21, the waste oil recovery area 3 is provided with a booster pump 31 and a filter 32, the oil separation tank 11 is provided with a water inlet pipe 14, the oil separation tank 11 is communicated with the adsorption tank 12, the adsorption tank 12 is provided with a water outlet pipe 15, the oil scraper 13 is disposed in the oil separation tank 11 to scrape off oil on the surface of the waste water in the oil separation tank 11, the oil outlet pipe 16 of the oil scraper 13 is communicated with the oil receiving tank 21, the oil outlet of the oil receiving tank 21 is communicated with the booster pump 31, the booster pump 31 communicates with the strainer 32, and the strainer 32 is provided with an oil discharge pipe 33.
In this embodiment, the oily wastewater firstly enters the oil separation tank 11 through the water inlet pipe 14, the upper layer of floating oil is scraped by the oil scraper 13 and then is conveyed into the oil receiving tank 21, and then is filtered by the booster pump 31 and the filter 32 and then is discharged from the oil discharge pipe 33. On the other hand, the wastewater from which the floating oil is scraped enters the adsorption tank 12, and is discharged from the water outlet pipe 15 after adsorbing the suspended matters.
The press oily wastewater of the embodiment is subjected to oil removal, oil scraping, recovery and purification treatment by the oily wastewater treatment, recovery and purification system, so that the recovered floating oil can completely reach the oil standard for press template demoulding, the problem of floating oil pollution is solved, and the cost of the demoulding agent is reduced due to the recycling of the floating oil, so that economic benefits are generated.
Example 2
As shown in fig. 1 and 3, the oil separation tanks 11 are arranged side by side, one oil scraper 13 is arranged above each oil separation tank 11, one oil separation tank 11 is provided with the water inlet pipe 14, the bottom of the other oil separation tank 12 is communicated with the bottom of the adsorption tank 12, the side walls of the two oil separation tanks 11 are communicated with each other through a first conduit 17, and the first conduit 17 is lifted up according to the direction of water flow. This embodiment sets up two oil interceptors and two frizing machines and has improved oil removal and frizing effect, sets up through the slope of first pipe 17, can make the fluid in the waste water come-up better, improves the effect of oil removal and frizing.
Example 3
As shown in fig. 1 and 3, the adsorption tanks 12 are two arranged side by side, the middle part of each adsorption tank 12 is provided with a detachable pressing bar 121, an oil absorption felt 122 and a stainless steel perforated plate 123 from top to bottom, the oil absorption felt 122 is clamped between the detachable pressing bar 121 and the stainless steel perforated plate 123, one adsorption tank 12 is communicated with the oil separation tank 11, the water outlet pipe 15 is arranged above the detachable pressing bar 121 of the other adsorption tank 12, and the two adsorption tanks 12 are communicated with each other and water flows are both in and out from bottom to top. The waste water is treated by an inorganic nano adsorption material two-stage adsorption process, so that the oil content of the final effluent of the press oily waste water is less than 30mg/L, and the suspended matters are less than 30mg/L, thereby basically solving the hidden trouble that the quality of the product is influenced by the reuse water and realizing the recycling of the press oily waste water after the integrated treatment. The oil absorption felt can be internally provided with an inorganic nano adsorption material, and the oil and the suspended matters (SS) in the water are removed by utilizing the adsorbability of the inorganic nano adsorption material to the oil and the SS and performing two-stage adsorption on the oil and the SS in an adsorption area. When the adsorption is saturated, the inorganic nano adsorption material is replaced regularly. The inorganic nano-adsorption material (such as inorganic silicon, montmorillonite and the like) is suitable for absorbing hydrogen, hydrocarbon and the like of petroleum, does not absorb water, and is commonly used for isolating a polluted area after the leakage of the marine petroleum and adsorbing and recovering the leaked petroleum; the density of the inorganic nano-adsorption material is less than that of water, and meanwhile, the inorganic nano-adsorption material does not absorb water, and the inorganic nano-adsorption material still floats on the water surface after saturated adsorption, so that the inorganic nano-adsorption material is convenient to replace. The oil absorbing felt 122 is convenient to detach and replace by arranging the detachable pressing strip 121.
Example 4
As shown in fig. 1 and 3, the oil receiving pools 21 are two and arranged side by side, one of the oil receiving pools 21 is communicated with the oil outlet pipe 16 of the oil scraper 13, the oil outlet of the other oil receiving pool 21 is communicated with the booster pump 31, the side walls of the two oil receiving pools 21 are communicated with each other through a second conduit 22, and the second conduit 22 is lowered along the oil flow direction. The two oil collecting ponds 21 are arranged in the embodiment, so that the solid in the oil collecting ponds 21 can be settled, and the oil-solid separation effect can be improved.
Example 5
As shown in fig. 1 and 3, the oily wastewater treatment, recovery and purification system further comprises a control cabinet 4, and the control cabinet 4 is connected with an oil scraper 13. The control cabinet 4 may be provided with a PLC controller, which may implement oil scraping by the oil scraper 13 according to a certain rule and sequence.
Example 6
As shown in fig. 2, the bottom of the oil separation tank 11, the bottom of the adsorption tank 12 and the bottom of the oil collection tank 21 are provided with drain pipes 5, and the drain pipes 5 are provided with ball valves 6. The bottom of each tank is provided with a drain pipe which can discharge settled particles at regular time, and the drainage time can be well controlled through the ball valve 6.
Example 7
This example provides one embodiment of the operation of the zones in conjunction with figures 1-3.
The oil separation area is a first-stage pretreatment unit of oily wastewater of the press, and can separate most of floating oil and suspended matters of the wastewater. In the oil separation area, because the specific gravity of oil products in the wastewater is generally smaller than that of water, the oil products exist in three states, namely a suspension state, in which oil product particles are larger, the diameter of oil droplets is more than 0.1 mm, and the oil products float on the water surface and are easy to separate from the water. In the petroleum industry, the oil products account for about 60-80% of the oil content of the wastewater. Secondly, the emulsified state is that the dispersed particle size of the oil product is small, the diameter of oil droplets is below 0.1 mm, and the oil product is in the emulsified state and is not easy to float upwards and separate from water. The oil products account for about 10-15% of the oil content of the wastewater. And thirdly, the solubility of the petroleum in water is extremely low, and the oil dissolved in the water accounts for 0.2-0.5% of the oil content of the wastewater. The oil separation tank achieves the purpose of separating oil products in a first type of suspension state by utilizing the difference of specific gravities of suspended matters and water in the wastewater; the oil separation tank adopts a horizontal flow type, oil-containing wastewater enters the oil separation tank with a rectangular plane through the water distribution tank, slowly flows along the horizontal direction, oil products float on the water surface in the flow, and floating oil floating on the water surface and the upper layer is collected and enters the waste oil tank by the oil scraper. And (4) carrying out physical mechanical scraping on the upper-layer floating oil by an oil scraper, and separating the floating oil obviously above the liquid from the water. The part of floating oil has recycling value, and the floating oil collected by the oil scraper is conveyed to an oil collecting pool through a collecting pipe for further treatment
In the adsorption tank, an MPA oil extractor is used for adsorbing and removing part of suspended floating oil, so that the floating oil removing efficiency of the oil separation tank is further improved; the MPA oil extractor can be disassembled and assembled, and needs to be cleaned and replaced regularly, and the absorbed floating oil is removed along with the cleaning of the MPA oil extractor. The oil and SS are adsorbed by inorganic nano-adsorption material in two stages in the adsorption zone to remove oil and Suspended Substances (SS) in water. When the adsorption is saturated, the inorganic nano adsorption material is replaced regularly. The inorganic nano-adsorption material is suitable for absorbing petroleum hydrogen, hydrocarbon and the like, does not absorb water, and is commonly used for isolating a polluted area after the leakage of the offshore petroleum and adsorbing and recovering the leaked petroleum; the nanometer Aconitum carmichaeli (radix Aconiti lateralis) has density lower than that of water, does not absorb water, and floats on water surface after saturated absorption, so that it is easy to replace.
The oil collecting area consists of two oil collecting tanks, and the functions of the oil collecting area have two functions, namely collecting the floating oil conveyed from the oil scraper and separating oil from concentrated floating oil, so that the water content of the floating oil is reduced, and the recovery value of the floating oil is improved. The separated waste water flows back to the front end of the oil separation tank through the guide pipe for treatment, and the dehydrated floating oil enters a waste oil recovery area for further treatment.
The waste oil recovery area is composed of a set of conveying booster pump and a set of filter, and has the function of filtering out dehydrated floating oil, further removing small particle impurities in the floating oil, and achieving the condition of floating oil recovery and use. The filter element of the filter needs to be cleaned and replaced regularly, and the floating oil from the filter is subjected to subsequent treatment after reaching the recycling condition.
According to 500 ten thousand M of calcium silicate board industry2Production line, the oily wastewater treatment capacity is measured and calculated at 25 tons/day:
1. the operation cost is as follows:
the integrated machine power of the oily wastewater treatment, recovery and purification machine is 0.75 kW; (2.65 yuan/watt-hour)
Electric charge: 0.75 × 2.6 × 24 × 0.8/25 ═ 1.5 (yuan/ton water)
Other charges (pre-estimate): 0.5 (Yuan/ton water)
The comprehensive cost is summarized as follows: 2 yuan/ton
2. Recovery value of floating oil:
500 ten thousand M2The production line uses about 250L of waste engine oil every day, according to 40% recovery rate, the waste oil recovery is about 100L/d, the price is about 5 yuan/L, then the value of the recovered oil product:
E0100 × 5 ═ 500 yuan/25T ═ 20 yuan/ton/water.
3. Saving water per ton (without considering the cost of pollution discharge and the like) according to 2.0 yuan per ton.
4. Comprehensive benefits are as follows: 20+2-2 ═ 20 (yuan/ton water).
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. The oily wastewater treatment, recovery and purification system is characterized by comprising an oil removal area (1), an oil receiving area (2) and a waste oil recovery area (3), wherein the oil removal area (1) comprises an oil separation tank (11), an adsorption tank (12) and an oil scraper (13), the oil receiving area (2) comprises an oil receiving tank (21), the waste oil recovery area (3) is provided with a booster pump (31) and a filter (32), the oil separation tank (11) is provided with a water inlet pipe (14), the oil separation tank (11) is communicated with the adsorption tank (12), the adsorption tank (12) is provided with a water outlet pipe (15), the oil scraper (13) is arranged in the oil separation tank (11) to scrape oil on the wastewater surface of the oil separation tank (11), an oil outlet pipe (16) of the oil scraper (13) is communicated with the oil receiving tank (21), the oil outlet of the oil receiving pool (21) is communicated with the booster pump (31), the booster pump (31) is communicated with the filter (32), and the filter (32) is provided with an oil discharge pipe (33).
2. The oily wastewater treatment, recovery and purification system according to claim 1, wherein the oil separation tanks (11) are arranged side by side, one oil scraper (13) is arranged above each oil separation tank (11), one oil separation tank (11) is provided with the water inlet pipe (14), the bottom of the other oil separation tank (11) is communicated with the bottom of the adsorption tank (12), the side walls of the two oil separation tanks (11) are communicated with each other through a first conduit (17), and the first conduit (17) rises according to the direction of water flow.
3. The oily wastewater treatment, recovery and purification system according to claim 1, wherein the number of the adsorption tanks (12) is two, the adsorption tanks are arranged side by side, the middle part of each adsorption tank (12) is provided with a detachable bead (121), an oil absorption felt (122) and a stainless steel perforated plate (123) from top to bottom, the oil absorption felt (122) is clamped between the detachable bead (121) and the stainless steel perforated plate (123), one adsorption tank (12) is communicated with the oil separation tank (11), the water outlet pipe (15) is arranged above the detachable bead (121) of the other adsorption tank (12), and the two adsorption tanks (12) are communicated with each other and water flow enters and exits from bottom to top.
4. The oily wastewater treatment, recovery and purification system according to claim 1, wherein the oil receiving ponds (21) are arranged in two side by side, one of the oil receiving ponds (21) is communicated with the oil outlet pipe (16) of the oil scraper (13), the oil outlet of the other oil receiving pond (21) is communicated with the booster pump (31), the side walls of the two oil receiving ponds (21) are communicated with each other through a second conduit (22), and the second conduit (22) is lowered according to the oil flow direction.
5. The oily wastewater treatment, recovery and purification system according to claim 1, further comprising a control cabinet (4), wherein the control cabinet (4) is connected with the oil scraper (13).
6. The oily wastewater treatment, recovery and purification system according to claim 1, wherein the bottoms of the oil separation tank (11), the adsorption tank (12) and the oil collection tank (21) are provided with drain pipes (5), and the drain pipes (5) are provided with ball valves (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120201564.7U CN214654022U (en) | 2021-01-25 | 2021-01-25 | Oily wastewater treatment, recovery and purification system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120201564.7U CN214654022U (en) | 2021-01-25 | 2021-01-25 | Oily wastewater treatment, recovery and purification system |
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| CN214654022U true CN214654022U (en) | 2021-11-09 |
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| CN202120201564.7U Active CN214654022U (en) | 2021-01-25 | 2021-01-25 | Oily wastewater treatment, recovery and purification system |
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