CN212894180U

CN212894180U - Oily wastewater treatment oil interceptor

Info

Publication number: CN212894180U
Application number: CN202021542953.8U
Authority: CN
Inventors: 赖红; 赖振威; 王博
Original assignee: Pingxiang Kangyu New Energy Technology Co ltd
Current assignee: Pingxiang Kangyu New Energy Technology Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-04-06
Anticipated expiration: 2030-07-30

Abstract

The utility model discloses an oily waste water treatment oil interceptor, comprising a cell body, set up first overhead gage along the length direction interval in the cell body, second overhead gage and third overhead gage, be provided with first baffle down between first overhead gage and second overhead gage, be provided with baffle down of second between second overhead gage and third overhead gage, equal interval is equipped with the overflow mouth between third overhead gage and the bottom of the pool, be provided with the quartz sand layer in the cell body bottom between first overhead gage and cell body left end, bottom is provided with the fibre ball layer in the cell body between one-level wire mesh and second overhead gage, waste liquid control surface position between second overhead gage and third overhead gage is provided with the oil blocking flotation pontoon, be provided with the micropore ceramic filter between third overhead gage and cell body right side, be provided with blowdown oil drain port on the cell body lateral wall respectively. The utility model discloses simple structure, manufacturing, convenient operation, small investment, and it is effectual to degrease.

Description

Oily wastewater treatment oil interceptor

Technical Field

The utility model relates to a waste water treatment especially relates to an oil interceptor of oily waste water deoiling processing.

Background

The waste oil in the oily wastewater mainly exists in three forms of suspended oil, dispersed oil and emulsified oil, which are divided according to the distribution diameter of oil droplets in water, and the sources of the oily wastewater comprise industries such as petroleum, chemical industry, processing, catering and the like. Flocculation, flotation, filtration and other methods are usually adopted. According to the water quality characteristics of the produced oily sewage and the water quality requirements of effluent, the sewage treatment process adopts biological treatment to achieve the expected purpose, and the alternative treatment processes are as follows:

1. Salting-out method for oily sewage treatment: the salting-out method for treating oily sewage is based on the principle of compressing the thickness of electric double layer at the interface of water surface to destabilize oil particles. The dosage of the pure salting-out method is large (1-5%), the speed of the coagulation is slow, the settling separation is generally more than 24 hours, the occupied area of equipment is large, and the treatment effect on the oil-containing emulsion stabilized by the surfactant is poor.

2. The flocculation method for treating the oily sewage comprises the following steps: inorganic flocculants commonly used are aluminum salts and iron salts, and particularly inorganic polymeric flocculants appearing in recent years, such as ferric polysulfate, polyaluminum chloride and the like, are increasingly receiving attention due to the advantages of small dosage, high efficiency, wide optimal pH value range and the like. Although the inorganic flocculant has a high treatment speed and a smaller apparatus than the salting-out method, the chemical is expensive and the amount of sludge produced is large.

3. The oily sewage treatment electric flocculation oil removal method comprises the following steps: the method for treating oily sewage by using metal aluminium or iron as anode is mainly applicable to secondary treatment of cooling lubricating liquid after chemical flocculation in mechanical processing industry. The electric flocculation has the advantages of good treatment effect, small occupied area, simple operation, relatively less scum amount and the like, but the electric flocculation has the defects of large consumption of anode metal, large amount of salt needed as an auxiliary agent, high power consumption, higher operating cost and the like.

SUMMERY OF THE UTILITY MODEL

To the problem that oily waste water treatment exists among the above-mentioned prior art, the utility model provides a not only simple structure, manufacturing, convenient operation, small investment, and it is effectual, efficient to degrease, is suitable for middle-size and small-size industry and catering industry oily waste water treatment to use.

The to-be-solved technical problem of the utility model is that: an oil separation tank for treating oily wastewater comprises a rectangular tank body, a wastewater inlet pipe and a purified water outlet pipe, wherein a first upper baffle, a second upper baffle and a third upper baffle which are suspended and fixed on the side wall of the tank body are arranged in the tank body at intervals along the length direction, a first lower baffle is arranged between the first upper baffle and the second upper baffle, a second lower baffle is arranged between the second upper baffle and the third upper baffle, empty baffles are arranged between the first upper baffle, the second upper baffle and the tank bottom, an overflow port is arranged between the third upper baffle and the tank bottom, a second-stage metal wire mesh is arranged in the empty baffle below the first upper baffle, a quartz sand layer is arranged at the bottom of the tank body between the first upper baffle and the left end of the tank body, a first-stage metal wire mesh is arranged at the upper end of the first lower baffle, and a fiber ball layer is arranged at the bottom of the tank body between the first-stage metal wire mesh and the second upper baffle, waste liquid control surface position between baffle is provided with the oil blocking flotation pontoon on second overhead gage and the third, is provided with the micropore ceramic filter between third overhead gage and cell body right side, micropore ceramic filter top and cell body parallel and level are provided with blowdown oil drain port respectively on the both sides wall of the cell body length direction who is close to the second grade silk screen left end, on the both sides wall of the cell body length direction who is close to the oil blocking flotation pontoon left end and on the both sides wall of the cell body length direction who is close to the micropore filter plate left end.

The quartz sand is strong in acid and alkali resistance, the granularity is 0.5-2 mm, and the oil blocking buoy is made of foam materials.

The utility model discloses the brief process of work is: oily wastewater firstly enters a tank body provided with quartz sand, after filtering the oily wastewater by the quartz sand, removing non-oily impurities in the oily wastewater, then intercepting larger particles of the oily wastewater through a second-level metal wire mesh (stainless steel 100-200 meshes), then entering a tank body provided with a fiber ball layer through a first-level metal wire mesh, separating floating oil and large-particle dispersed oil (50-100 μm) from water in the oily wastewater by fiber ball layer, floating to the wastewater surface, discharging from the sewage discharge and oil discharge port, treating by fiber ball layer, discharging the separated oil from the sewage discharge and oil discharge port after floating on the liquid surface and blocked by the oil blocking float bowl, and the wastewater is adsorbed and filtered by a microporous ceramic filter plate (the diameter of each micropore is 0.2-0.5 mu m), and the micro dispersed oil (10-50 mu m) and the emulsified oil (less than 10 mu m) of the oily wastewater are filtered and discharged from a clean water discharge pipe.

The oil interceptor is suitable for the oil-water separation of the oily waste water that produces such as middle-size and small-size oil refinery, coke-oven plant, machining factory and catering industry to handle, and its simple structure, manufacturing, convenient operation, small investment, build and imitate soon, and it is effectual to degrease, can with the oily 10-15wt% oily waste water in the oil-water separation in the back waste water oil content can descend to below 20 milligrams per liter, reach the oily waste water treatment and arrange the standard outward.

When the utility model is used in winter, a circulating hot air pipe (not shown in the figure) is arranged at the bottom of the tank body, so that the temperature of the waste water in the tank body is kept at 20-50 ℃.

Drawings

Figure 1 is a main sectional structure schematic diagram of the utility model,

figure 2 is a schematic top view of the present invention,

fig. 3 is a schematic view of the structure in the direction B in fig. 1.

In the figure, the device comprises a water pump 1, a water inlet pipe 2, a wastewater inlet pipe 3, a first upper baffle 4, a sewage and oil discharge port 5, a primary metal wire mesh 6, a second upper baffle 7, a second lower baffle 8, an oil blocking buoy 9, a third upper baffle 10, a microporous ceramic filter plate 11, a purified water outlet pipe 12, a fiber ball layer 13, a secondary metal wire mesh 14, a quartz sand layer 15, a tank body 16, an overflow port 17, a waste liquid control surface 18, a first lower baffle 19 and a neutral position.

Detailed Description

In fig. 1, 2 and 3, an oil separation tank for treating oily wastewater comprises a rectangular tank body 15, a wastewater inlet pipe 2 and a purified water outlet pipe 11, wherein one end of the wastewater inlet pipe is connected with a water pump 1, the other end of the wastewater inlet pipe extends into the tank body, a first upper baffle 3, a second upper baffle 6 and a third upper baffle 9 (all made of ceramic plates and fixed on the side wall as steel frame and acid and alkali resistant cement) which are suspended and fixed on the side wall of the tank body are arranged in the tank body at intervals along the length direction, a first lower baffle 18 is arranged between the first upper baffle 3 and the second upper baffle 6, a second lower baffle 7 (made of ceramic tiles and acid and alkali resistant cement) is arranged between the second upper baffle 6 and the third upper baffle 9, hollow baffles 19 are arranged between the first upper baffle, the second upper baffle and the bottom of the tank, and an overflow port 16 which is rectangular is arranged between the third upper baffle and the bottom of the tank, the height of the overflow port is one fifth to one sixth of the height of the inner cavity of the tank body, the width of the overflow port is larger than the spacing distance between the overflow ports, a second-level metal wire mesh 13 (stainless steel 100 meshes) is fixedly arranged in a hollow block below the first upper baffle, a quartz sand layer 14 is arranged at the bottom of the tank body between the first upper baffle and the left end of the tank body, the height of the quartz sand layer is larger than the height of the second-level metal wire mesh 13, a first-level metal wire mesh 5 (stainless steel 200 meshes) is arranged at the upper end of the first lower baffle, a fiber ball layer 12 is arranged at the bottom of the tank body between the first-level metal wire mesh and the second upper baffle, the height of the fiber ball layer is larger than the height of the overflow port, an oil blocking float bowl 8 is arranged at the position of waste liquid 17 between the second upper baffle and the third upper baffle, a microporous ceramic filter plate 10 is arranged between the third upper baffle and, micropore ceramic filter top and cell body parallel and level are provided with blowdown oil drain port 4 respectively on the both sides wall of the cell body length direction that is close to one-level silk screen left end, on the both sides wall of the cell body length direction that is close to the oil blocking flotation pontoon left end and on the both sides wall of the cell body length direction that is close to the microfiltration board left end. The bottom surface of the sewage discharge oil outlet is slightly lower than a waste liquid control surface (lower by 5-10 mm), the two ends of the two side walls of the tank body are also provided with the sewage discharge oil outlet, and the waste liquid control surface is the maximum height of the waste water (generally lower than the upper surface of the tank body by 150-200 mm). When the waste water reaches the waste liquid control surface, the water pump stops working, and when the waste water is lower than the waste liquid control surface by 100 mm, the water pump starts working.

Claims

1. The utility model provides an oily waste water treatment oil interceptor, it includes rectangular cell body (15), waste water inlet tube (2) and water purification outlet pipe (11), characterized by: the device is characterized in that a first upper baffle (3), a second upper baffle (6) and a third upper baffle (9) which are suspended and fixed on the side wall of the tank body are arranged in the tank body at intervals along the length direction, a first lower baffle (18) is arranged between the first upper baffle and the second upper baffle, a second lower baffle (7) is arranged between the second upper baffle and the third upper baffle, empty baffles (19) are arranged among the first upper baffle, the second baffle and the tank bottom, overflow ports (16) are arranged between the third upper baffle and the tank bottom at intervals, a second-stage metal wire mesh (13) is arranged in the empty baffle below the first upper baffle, a quartz sand layer (14) is arranged in the tank body bottom between the first upper baffle and the left end of the tank body, a first-stage metal wire mesh (5) is arranged at the upper end of the first lower baffle, and a fiber ball layer (12) is arranged at the tank body inner bottom between the first-stage metal wire mesh and the second, waste liquid control surface position between second overhead gage and the third overhead gage is provided with hinders oil flotation pontoon (8), is provided with micropore ceramic filter (10) between third overhead gage and cell body right side, micropore ceramic filter top and cell body parallel and level are provided with blowdown oil drain port (4) respectively on the both sides wall of the cell body length direction who is close to one-level silk screen left end, on the both sides wall of the cell body length direction who is close to the oil flotation pontoon left end and on the both sides wall of the cell body length direction who is close to the micropore ceramic filter plate left end.

2. The oily wastewater treatment oil interceptor of claim 1, wherein: two ends of two side walls of the tank body are provided with sewage and oil discharge ports (4).

3. The oily wastewater treatment oil interceptor of claim 1, wherein: the overflow ports (16) are arranged at intervals, the height of each overflow port is one fifth to one sixth of the height of the inner cavity of the pool body, and the width of each overflow port is larger than the interval distance between the overflow ports.