CN100586529C

CN100586529C - Sand leach oil remover for water processing

Info

Publication number: CN100586529C
Application number: CN200710170803A
Authority: CN
Inventors: 庞维海; 高乃云
Original assignee: Tongji University
Current assignee: Xinjiang Dayuan Environmental Engineering Co Ltd
Priority date: 2007-11-22
Filing date: 2007-11-22
Publication date: 2010-02-03
Anticipated expiration: 2027-11-22
Also published as: CN101249322A

Abstract

The invention belongs to the technical field of water treatment, in particular to a sand filtration oil remover for water treatment. The sand filtration oil remover is composed of a filter and a sandwasher by connection via a pipeline and a valve. A water inlet of the filter is provided with an annular perforation water distributing pipe and a guide plate, and the central position of the filter is provided with a shuttle-shaped sand guide device. The sand which is full of oil by absorption is delivered to the sand washer during the operation process of the filter. The sand washer is a rectangular structure which is hollow in the middle part, which is composed of a motor, a sleeve, an inclined plate, a steam pipe, a stirrer, a sand collecting funnel and a sand distributing funnel, the inclined plate is positioned in the middle part of the sand washer, the steam pipe is positioned below the inclined plate, the stirrer is positioned at the bottom part of the sand washer, the sleeve is positioned at the middle part of the inclined plate, the motor is positioned above the sleeve, an output shaft of the motor penetrates the sleeve to connect the stirrer, the sand collecting funnel is positioned at one side of the bottom part of the sand washer, and the sand collecting funnel is connected with the sand distributing funnel by a conveyor. The oil-containing sand is circulated into thefilter by the conveyor after cleaning. The operation process of the sand filtration oil remover is chemical-free, thereby saving the cost and being safe and reliable.

Description

A kind of sand leach oil remover that is used for water treatment

Technical field

The invention belongs to water-treatment technology field, be specifically related to a kind of sand leach oil remover that is used for water treatment.

Background technology

Aspect the water treatment oil removing, the device of usefulness mainly contains following several both at home and abroad at present:

1, air supporting method degreasing unit

Air flotation technology is widely used a kind of water technology during domestic and international oily waste water is handled, its principle is exactly bubbling air or other gas generation micro air bubble in water, make some tiny suspension oil droplets in the water and solid particle attached on the bubble, form scum silica frost with floating to the water surface on the bubble, thereby finish a kind of water purification of separation.

Because major part contains in the waste water, oil is in emulsified state, so the first demulsifier that add in oily waste water of oil removal by air bubbling needs, and this makes the character of waste water become complicated more with regard to equaling.Adopt the mode of air-dissolving air-float simultaneously, energy consumption is also than higher, and can increase the dissolved oxygen in the water, causes the corrosion of metallic conduit.

2, membrane separation process degreasing unit

Membrane separation process is the new separation technology that developed rapidly in 20 years nearly.Embrane method is handled emulsified oil-containing waste water, generally can directly realize water-oil separating without the breakdown of emulsion process.And in membrane separating profit process, do not produce oily sludge, but concentrate burning disposal; Treating capacity and water quality are more stable, do not change with oil concentration fluctuation in the water inlet.But it is contaminated easily that the defective of membrane separation process is a membrane module, and be difficult to clean, and be not suitable for the waste water that flow is big or oil content is low.

3, absorption method degreasing unit

Modal adsorbent is an active carbon, and it not only has good adsorption property to oil, and can adsorb other organic matters in the waste water simultaneously effectively, adsorption capacity to oil is generally 30～80mg/g, but the cost height, regeneration difficulty, the general advanced treating that only is used for oily waste water.

4, filter method degreasing unit

Filtration is a kind of method of processing oily waste water commonly used.In processing procedure, it is crucial to select suitable filtrate that treatment effect is played a part.From the shape of filtrate, can be divided into fibrous and graininess; From the character of filtrate, the lipophilic-hydrophobic property of material surface is main.But because the lipophile filtrate is after being filled oil, in original device, be difficult to be cleaned clean, so be difficult on the engineering adopt the mode of absorption to come oil removing.

Summary of the invention

The object of the invention is to provide a kind of can satisfy deoiling effect, need not add the filtration oil expeller that is used for water treatment of demulsifier again in water.

The filtration oil expeller that is used for water treatment that the present invention proposes is connected to form by pipeline and valve by sand-washing device and filter, and its structure as shown in Figure 1.Wherein:

Filter 6 is that a top is cylindrical, the bottom is funnel shaped filter tank, by water inlet pipe 1, sparge pipe 2, deflector 3, lead sand device 4, quartz sand filtering layer 5, effluent trough 7 and outlet pipe 8 are formed, water inlet pipe 1 is positioned at filter middle portion one side, water inlet 27 places are provided with sparge pipe 2 and deflector 3, and deflector 3 is positioned at sparge pipe 2 tops, what filter 6 centers were provided with a fusiformis leads sand device 4, leading sand device 4 tops is quartz sand filtering layer 5, between quartz sand filtering layer 5 and filter 6 sidewalls is clear water zone 26, effluent trough 7 is cirque structure, be positioned at filter 6 tops, effluent trough 7 one sides connect outlet pipe 8;

Sand-washing device 15 is the hollow rectangular configuration in middle part, by decelerator 13, sleeve 14, swash plate 16, steam pipe 17, main steam range 18, outlet pipe 19, agitator 20, sand collecting hopper 21 and join sand hopper 23 and form, swash plate 16 is positioned at sand-washing device 15 middle parts, steam pipe 17 is positioned at swash plate 16 belows, agitator 20 is positioned at sand-washing device 15 bottoms, sleeve 14 is positioned at swash plate 16 middle parts, motor 13 is positioned at sleeve 14 tops, the output shaft of motor 13 passes sleeve 14 and connects agitator 20, sand collecting hopper 21 is positioned at sand-washing device 15 bottoms one side, sand collecting hopper 21 connects by conveyer 22 and joins sand hopper 23, and outlet pipe 19 is positioned at sand-washing device 15 1 sides top, and steam pipe 17 connects main steam range 18;

Filter 6 cylindrical shape open tops, join the sand-falling port of sand hopper 23 and aim at this opening, filter 6 bottoms connect sediment transport pipe 12, and sediment transport pipe 12 other ends connect sand-washing device 15 tops, and the clear water zone 26 of filter 6 connects sand-washing device 15 bottoms by rinse water valve 24, wash tub pipe 25.

Among the present invention, swash plate 16 materials can adopt stainless steel, and the spacing between the swash plate 16 is 25-33mm, and the inclination angle of swash plate 16 is 55-65 °.

Among the present invention, sparge pipe 2 can adopt the annular perforations sparge pipe.

Among the present invention, deflector 3 can adopt ring diversion plate.

Among the present invention, filter 6 bottoms adopt supporting leg 11 fixing.

Among the present invention, sediment transport pipe 12 adopts three-way pipe, and an end connects filter 6 bottoms, and the other end connects ajutage 10, and ajutage 10 connects air blast 9, the three ends and connects sand-washing device 15 napexes, makes quartz sand put forward mode by gas and is delivered to sand-washing device 15.

Among the present invention, the slurry of agitator 20 is S-shaped.

Among the present invention, conveyer 22 adopts Shaftless screw conveyor.

Among the present invention, the outer wall of sand-washing device 15 is provided with heat-insulation layer.

Quartz sand is good lipophile filtrate, and it can sop up the tiny oil droplets in the water, and this absorption belongs to physical absorption, does not need to add chemical agent in adsorption process.Though someone once expected filtering oil removing with the quartz sand filter tank, finally have to abandon because washing the oil on the quartz sand off, the present invention has then solved the physical removal problem of oil-containing in the water well.

Beneficial effect of the present invention: 1, oil removal efficiency height of the present invention, can remove in the former water 90～96% oil; 2, do not need to add chemical analysis such as demulsifier, do not change former water and discharge the composition of waste oil, the recirculated cooling water that is particularly suitable for oil-containing is handled; 3, adopt the mode of circulation filtrate to carry out washed-out sand, save energy consumption and floor space.4, automaticity height need not manually to keep an eye on.

Description of drawings

Fig. 1 is a structural diagrams of the present invention.

Fig. 2 is filter 6 structural representations.

Fig. 3 is sand-washing device 15 structural representations.

Number in the figure: 1 is water inlet pipe, and 2 is sparge pipe, and 3 is deflector, 4 for leading the sand device, and 5 is the quartz sand filtering layer, and 6 is filter, 7 is effluent trough, and 8 is outlet pipe, and 9 is air blast, 10 is ajutage, and 11 is supporting leg, and 12 is the sediment transport pipe, 13 is decelerator, and 14 is sleeve, and 15 is sand-washing device, 16 is swash plate, and 17 is steam pipe, and 18 are main steam range, 19 is the sewage outlet pipe, and 20 is agitator, and 21 is sand collecting hopper, 22 is conveyer, 23 for joining sand hopper, and 24 is rinse water valve, and 25 is wash tub pipe, 26 is the clear water zone of filter, and 27 is the water inlet of filter.

The specific embodiment

Further specify the present invention in conjunction with the accompanying drawings below by embodiment.

Embodiment 1:

Filter 6 is that a top is that cylindrical shape, bottom are funnel shaped filter tank.The water inlet pipe 1 of filter is located at the middle part, and water inlet 27 places are provided with annular perforations sparge pipe 2 and deflector 3.The mode of filter 6 operations is middle water inlet, upper end water outlet.Filter 6 centre bits are equipped with a fusiformis and lead sand device 4, and the automatic landing of sand that can make the top is to the taper sand collecting hopper.The bottom of filter 6 is connected to sediment transport pipe 12, can be delivered to washed-out sand pond 15 to the mode that the sand of filter 6 bottoms is carried by gas, and source of the gas is provided by air blast 9.Filtrate in the filter 6 is the homogeneous quartz sand filter media, and particle diameter is 1～2mm.

Sand-washing device 15 is made up of swash plate 16, perforation steam pipe 17, agitator 20, Shaftless screw conveyor 22.Sand-washing device 15 is a rectangular pool, does heat-insulation layer outward.Inside is provided with swash plate 16, and the spacing between the swash plate 16 is 30mm, and the inclination angle of swash plate 16 is 60 °, and swash plate 16 can delay the sedimentation of quartz sand, so that make the oil on the quartz sand fully be heated flush away, reduces the surface loading of oil come-up simultaneously.The slurry of agitator 20 is S-shaped, when agitator 20 rotations, quartz sand and hot water is fully mixed, and can be pushed into the quartz sand behind the wash clean sand collecting hopper 21 of bottom, washed-out sand pond again, in Shaftless screw conveyor 22 is circulated to filter 6.

The operation of this device can be divided into raw water filtration and two processes of filtrate cleaning and regeneration:

(1) source water filtration

Pump into the annular perforations sparge pipe 2 at filter 6 middle parts by water head tank gravity flow or elevator pump when former water, pass ring diversion plate 3 and fusiformis and lead space between the sand device 4, adverse current process quartz sand filtering layer 5 gradually evenly makes progress, oil droplet in the former water and impurity are constantly held back, are adsorbed, filter back water is finished filter process from effluent trough 7 dischargings at filter 6 tops.

(2) filtrate cleans and regeneration

When filtration was constantly carried out, the oil content in the former water was also constantly accumulated and is trapped in filter material surface, and oil strain amount maximum is the filtrate of filter 6 bottoms.The compressed air that is located at filter 6 bottoms is carried the sand device and at first this part filtrate is submitted to sand-washing device 15 by sediment transport pipe 12, and air is released.Draw a wash tub pipe 25 as the washed-out sand water from the clear water zone of filter 6, the thermal source of sand-washing device 15 is a steam.Under the heating of steam, the coolant-temperature gage in the sand-washing device 15 is controlled at about 70～80 ℃, and the oil on the quartz sand is easy to be released, and adds under the vigorous agitation of steam and agitating device, and the mutual friction between the sand can be washed 90～95% oil off.The washed-out sand water of high oil-containing is by independent discharge of pipes.The sand of wash clean is scattered again and is distributed to whole filter bed surface, has realized the cleaning of filtrate and the process that circulates.

In this device, temperature is to influence one of most important factor of stirring and washing, and the washing rate increases rapidly along with the raising of oil-sand cleaning temperature.Under identical cleaning temperature, the oil-sand that the oil-sand that oil-sand ratio is big is little than oil-sand ratio is difficult to clean, and difference was obvious more when rinse liquid temperature was low more.

Claims

1, a kind of sand leach oil remover that is used for water treatment is connected to form by pipeline and valve by sand-washing device (15) and filter (6), it is characterized in that: wherein,

Filter (6) is that a top is cylindrical, the bottom is funnel shaped filter tank, by water inlet pipe (1), sparge pipe (2), deflector (3), lead sand device (4), quartz sand filtering layer (5), effluent trough (7) and outlet pipe (8) are formed, water inlet pipe (1) is positioned at filter (6) middle part one side, water inlet (27) locates to be provided with sparge pipe (2) and deflector (3), and deflector (3) is positioned at sparge pipe (2) top, what filter (6) center was provided with a fusiformis leads sand device (4), lead sand device (4) top and be quartz sand filtering layer (5), between quartz sand filtering layer (5) and filter (6) sidewall is clear water zone (26), effluent trough (7) is cirque structure, be positioned at filter (6) top, effluent trough (7) one sides connect outlet pipe (8);

Sand-washing device (15) is the hollow rectangular configuration in middle part, by decelerator (13), sleeve (14), swash plate (16), steam pipe (17), main steam range (18), outlet pipe (19), agitator (20), sand collecting hopper (21) and join sand hopper (23) and form, swash plate (16) is positioned at sand-washing device (15) middle part, steam pipe (17) is positioned at swash plate (16) below, agitator (20) is positioned at sand-washing device (15) bottom, sleeve (14) is positioned at swash plate (16) middle part, motor (13) is positioned at sleeve (14) top, the output shaft of motor (13) passes sleeve (14) and connects agitator (20), sand collecting hopper (21) is positioned at sand-washing device (15) bottom one side, sand collecting hopper (21) connects by conveyer (22) and joins sand hopper (23), outlet pipe (19) is positioned at sand-washing device (15) one sides top, and steam pipe (17) connects main steam range (18);

Filter (6) cylindrical shape open top, join the sand-falling port of sand hopper (23) and aim at this opening, filter (6) bottom connects sediment transport pipe (12), sediment transport pipe (12) other end connects sand-washing device (15) top, and the clear water zone (26) of filter (6) connects sand-washing device (15) bottom by rinse water valve (24), wash tub pipe (25).

2, the sand leach oil remover that is used for water treatment according to claim 1 is characterized in that swash plate (16) material adopts stainless steel, and the spacing between the swash plate (16) is 25-33mm, and the inclination angle of swash plate (16) is 55-65 °.

3, the sand leach oil remover that is used for water treatment according to claim 1 is characterized in that sparge pipe (2) adopts the annular perforations sparge pipe.

4, the sand leach oil remover that is used for water treatment according to claim 1 is characterized in that deflector (3) adopts ring diversion plate.

5, the sand leach oil remover that is used for water treatment according to claim 1 is characterized in that filter (6) bottom employing supporting leg (11) is fixing.

6, the sand leach oil remover that is used for water treatment according to claim 1, it is characterized in that sediment transport pipe (12) adopts three-way pipe, one end connects filter (6) bottom, the other end connects ajutage (10), ajutage (10) connects air blast (9), the 3rd end connects sand-washing device (15) napex, and quartz sand is put forward mode by gas and is delivered to sand-washing device (15).

7, the sand leach oil remover that is used for water treatment according to claim 1 is characterized in that the oar of agitator (20) is S-shaped.

8, the sand leach oil remover that is used for water treatment according to claim 1 is characterized in that conveyer (22) adopts Shaftless screw conveyor.

9, the sand leach oil remover that is used for water treatment according to claim 1 is characterized in that the outer wall of sand-washing device (15) is provided with heat-insulation layer.