CN201999778U

CN201999778U - Single-layer pressure integration oil eliminator

Info

Publication number: CN201999778U
Application number: CN2010206301353U
Authority: CN
Inventors: 陈予恩
Original assignee: Huatian Engineering and Technology Corp MCC
Current assignee: Huatian Engineering and Technology Corp MCC
Priority date: 2010-11-29
Filing date: 2010-11-29
Publication date: 2011-10-05
Anticipated expiration: 2020-11-29

Abstract

The utility model discloses a single-layer pressure integration oil eliminator which is invented for solving the problems of low efficiency and the like in the prior art. A shell is divided into an upper layer and a lower layer; the tail end of a water inlet pipe of an upper inclined tube clearing layer is connected with an injector; the bottom is provided with an outer baffle and an inner baffle an upper flow guide hole; a central reaction chamber is communicated with an annular flow guide chamber, and the part between the outer baffle and the shell is divided into an inclined tube sediment area, a lower separation area and a lower clean water area; the lower filter layer comprises a water inlet distribution area, a quartz sand filtering area and a water outlet collection area; a water collection disc is communicated with the water inlet distribution area, the upper part of the water inlet distribution area is provided with a filter material backwash drain pipe; and the water outlet collection area is connected with a main filtered water outlet pipe, a filter material backwash inlet pipe and a compressed air backflushing inlet pipe at the bottom of the oil eliminator. The single-layer pressure integration oil eliminator integrates mixing, flocculoreaction, clearing, sediment, filtering and pressure-bearing, has high oil eliminating effect, good water draining effect, simplifies the sewage processing technical process, occupies less area, saves investment, has a compact structure, and facilitates centralized arrangement and management.

Description

Single-layer pressure type integrated oil remover

Technical Field

The utility model relates to an individual layer pressure type integration degreaser that oily sewage treatment process used especially relates to an individual layer pressure type integration high-efficient degreaser that oily sewage treatment process used to metallurgical steel plant continuous casting and steel rolling production.

Background

The turbid circulating water of continuous casting and steel rolling in metallurgical and iron and steel works generally refers to oily sewage in continuous casting plants, wire plants, bar plants, section bar plants and plate plants. The oily sewage of continuous casting and steel rolling mainly refers to sewage generated in the process of directly spraying and cooling continuous casting equipment and rolling line equipment, and backwater after spraying and cooling contains a large amount of impurities such as iron scales, leaked lubricating hydraulic oil and the like. The oil has strong viscosity and is easy to adhere to iron scale solid particles, and the iron scale particles of the oil have large harm and can block the filler of a cooling tower, a filter screen of a pipeline filter, a circulating water pipeline and a nozzle for water spraying and cooling of rolling mill equipment. The single-layer pressure type integrated efficient oil remover is used for treating oily sewage containing iron scale particles in turbid circulating water systems of continuous casting and steel rolling workshops of a steel plant. Chemical agents are added into the oil remover to remove oil in sewage, including emulsified oil and floating oil, and suspended solid in the sewage, including solid particles in a micro-particle state and a colloidal state, is removed at the same time.

In the prior art, the common sewage oil removal method comprises two main types of physical oil removal and chemical oil removal, and the process flow is as follows: (1) a three-stage oil removal and precipitation treatment process of a primary iron sheet sedimentation tank, a secondary horizontal flow sedimentation tank and a rapid filter by a physical method; (2) and a three-stage treatment process of first physical and then chemical oil removal of the primary iron sheet sedimentation tank, the chemical oil remover and the rapid filter. The oil removing method of the chemical oil remover is characterized in that chemical agents are added, and oil, iron scale, other impurity suspended matters and the like in sewage are subjected to mixing reaction and are settled and separated through coagulation, flocculation and contact flocculation filtration, so that the purposes of purifying water quality and recycling water are achieved. Compared with the oil removal by a mechanical physical method, the chemical method has three advantages: firstly, the oil is removed completely; secondly, due to the action of the medicament, the oil and the suspended matters form flocculation and sink together, thereby achieving the dual purposes of removing the oil and the suspended matters simultaneously; thirdly, the settled oily sludge is centrally discharged at regular time, the dewatering performance is good, and the subsequent sludge transportation and comprehensive utilization are convenient. The currently used chemical degreaser has the following disadvantages: firstly, only a pipeline mixer is adopted for mixing, so that the medicament mixing reaction is insufficient, and the medicament consumption is large; secondly, only the stirring impeller is adopted to ensure that the sludge reflux amount is smaller, and the contact adsorption and contact flocculation of the reflux sludge are not fully exerted, so that the effluent effect is poor, and the effluent of the reactor is often subjected to further subsequent sand filtration by adopting a rapid filter to meet the water quality requirement of the water for the steel rolling process; thirdly, the existing chemical degreasers are all open non-pressure-bearing type treatment structures, which are beneficial to maintenance and overhaul of equipment, but the effluent water of the chemical degreasers needs to be pressurized again and then is sent to a filter and a cooling tower, so that the existing chemical degreasers, a hot water tank, a pressurizing pump set, a rapid filter and a cooling tower, which are separated and independent from each other, have the disadvantages of complex treatment process flow, more working procedures, large occupied area and high investment.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide an integrated single-layer pressure type oil remover which has high oil removing efficiency, large sludge backflow amount and good water outlet effect and integrates the functions of mixing, flocculation reaction, clarification, sedimentation, filtration and bearing.

In order to achieve the purpose, the single-layer pressure type integrated oil remover comprises a shell 1 provided with a water inlet pipe 30 and a partition board 2 arranged in the shell, wherein the partition board divides the interior of the shell into an upper space and a lower space which are independent, the upper space is an inclined tube clarifying layer, and the lower space is a filtering layer; wherein,

the upper inclined tube clarification layer is provided with a water collecting disc 20 at the top inside, the water collecting disc is provided with a water inlet 21 and a water outlet pipe 22 communicated with the filtration layer, and the bottom is provided with a cylindrical inner partition plate 12 and an outer partition plate 13; an annular cavity 16 with the bottom communicated with the upper inclined tube clarification layer is formed between the cylindrical inner partition plate and the cylindrical outer partition plate, and flow guide holes 14 are formed in the periphery of the top of the inner partition plate and communicated with a reaction chamber 15 in the inner partition plate and the annular cavity; the water inlet pipe extends into the bottom of the cylindrical inner partition plate from the bottom of the shell; the annular cylindrical region between the outer baffle and the housing is divided into three zones: an inclined tube settling zone 17 at the middle part, a separation zone 18 at the lower part and a clear water zone 19 with a water collecting disc at the upper part;

the lower filtering layer consists of a water inlet and distribution area 23, a quartz sand filtering material area 32 and a water outlet and collection area 33 from top to bottom, the water outlet pipe is communicated with the water distribution area, a filtering material backwashing water outlet pipe 40 is arranged at the upper part of the water distribution area, the bottom of the quartz sand filtering material area is connected with the water outlet and collection area, and the water outlet and collection area is connected with a filtered water main water outlet pipe 34, a filtering material backwashing water inlet pipe 36 and a compressed air backwashing air inlet pipe 43 which are arranged at the bottom of the oil remover.

Wherein, the shell is a pressure-bearing steel shell, and the top of the oil remover is provided with an automatic exhaust valve 45 and a safety valve 46.

Furthermore, a water inlet electric butterfly valve 4 and a pipeline mixer 5 with two dosing ports are arranged on the water inlet pipe 3 positioned outside the shell, a coagulant dosing port 6 is arranged at the water inlet end of the pipeline mixer 5, and an oil flocculant dosing port 7 is arranged at the water outlet end; the pipeline mixture and the water ejector are used for hydraulic mixing and reaction to provide power for stirring the sewage in the shell.

In particular, the end of the inlet pipe 3 is connected to the nozzle 9 of the water jet, the nozzle 9 being mounted in a bell-shaped annular shroud 10, the annular shroud 10 being connected to the throat 11 of the water jet. The water ejector consists of three parts, namely a nozzle, a throat pipe, a bell mouth and an annular cover pipe.

Furthermore, an inner porous sludge discharge ring pipe 24, an outer porous sludge discharge ring pipe 25 and a sludge discharge main pipe (26) are arranged at the bottom of the sludge area (8) of the upper inclined tube clarification layer, and an electric quick-opening butterfly valve 27 for controlling the timed and discontinuous discharge of sludge of the upper inclined tube clarification layer is arranged on the sludge discharge main pipe 26 extending out of the tank.

Wherein, the top of the inclined tube settling zone 17 of the upper inclined tube clarification layer is provided with an inner annular porous flushing tube 28 and an outer annular porous flushing tube 29 which are communicated with a flushing main pipe 30, and the flushing main pipe 30 extending out of the shell is provided with an electric quick-opening butterfly valve 31 for controlling the timing intermittent flushing of the inclined tube.

Particularly, the water outlet collecting area 33 of the lower filtering layer is connected with the filtered water main water outlet pipe 34, the water outlet electric butterfly valve 35 is arranged on the main water outlet pipe 34, and the backwashing water inlet electric butterfly valve 37 is arranged on the filtering material backwashing water inlet pipe 36 at the bottom of the oil remover and is communicated with the main water outlet pipe 34 through an elbow 38 and a tee joint 39.

Furthermore, the upper part of the water inlet and distribution area 23 positioned below the isolation plate 2 is provided with a filter material backwashing water discharge pipe 40, and the backwashing water discharge pipe 40 extending out of the device is provided with a backwashing water discharge electric butterfly valve 41 for controlling backwashing water discharge of the filter layer.

Wherein, a compressed air distribution ring pipe 42 and an air inlet main pipe 43 for backwashing are arranged in the water outlet collecting area 33 of the lower filtering layer, and an air inlet electric butterfly valve 44 for controlling air backwashing on the filtering layer is arranged on the air inlet main pipe 43 extending out of the device.

Compared with the prior art, the structure integrates mixing, flocculation reaction, clarification, sedimentation and filtration. The utility model discloses the degreaser divide into two layers: the upper part is the pipe chute clarification layer, and the lower part is the play water filter layer, adopts the pipe-line mixer of peripheral hardware, the hydraulic power lifting mechanism (being located upper portion in the pond) and the sand filtering layer (being located the bottom of the pool) of establishing, impels active sludge inner loop in the pond to make in intaking impurity particle and the sludge contact flocculation that has formed, after pipe chute sedimentation sediment separation of water, the clarified water converges to the lower part filter layer and discharges after sand filtration, for the collection mixes, flocculation reaction, clarification, precipitation and the high-efficient chemical deoiling settler equipment of filtration as an organic whole. Therefore, compare with other degreasers, the utility model discloses high-efficient degreaser is integrated equipment as an organic whole, has compact structure can concentrate advantages such as arranging, area is little.

Can simplify the sewage treatment process. The utility model discloses a high-efficient degreaser of pressure type of collection sewage clarification, filtration and pressure-bearing as an organic whole compares with other degreasers, can save equipment, pipeline and the structure of this three link between hot-water pond, hot water upper tower booster pump group and quick filter to merge into a processing structure with two heavy ponds between this two bold processes with the filter, consequently the utility model discloses high-efficient degreaser has advantages such as simplifying sewage treatment process flow, investment province, be convenient for centralized management.

The utility model discloses add the sand filtration layer in the bottom, when stablizing out water quality of water, can improve unit area's hydraulic load 50% ~ 100%. The unit area hydraulic load of the existing chemical oil remover is difficult to improve due to the restriction of effluent quality. The utility model discloses set up the quartz sand filter layer in the bottom, upper portion clarified water flows down to the lower part filter layer and discharges after the quartz sand filters, when stabilizing out water quality of water, can increase the hydraulic load of degreaser unit area effectively (can improve 50% ~ 100%), but the reduction equipment diameter saves the equipment investment, and the load capacity that shocks resistance is strong.

The utility model discloses a no power equipment, the medicament mixes the reaction fully. The existing chemical oil remover adopts a pipeline mixer for primary mixing and a stirring impeller for primary reaction, and the chemicals are difficult to fully mix and react. And in the utility model discloses in, the medicament adopts second grade to mix and the one-level reaction, has guaranteed the high efficiency of medicament mixing reaction, has reduced the dose simultaneously, has saved the medicament expense. A pipeline mixer: first order mixing of the two agents: the coagulant and the oil flocculant are sequentially dosed and fixed by a high-efficiency pipeline mixer by utilizing the water inlet pressure in a rapid medicament mixing mode of static turbulence of a helical blade, so that the raw water and the two medicaments are fully mixed before entering a nozzle of a water injector. Sludge backflow lifting and secondary mixed water injector: mixing two new particles of iron oxide scale coagulated particles and oil flocculated particles with three particles of backflow sludge in a secondary mode: the water inlet pressure is utilized to mix the trans-form by adopting high-speed turbulent turbulence, high intensity and high efficiency of a water injector and a throat pipe. Central barrel reactor: the water inlet pressure can be utilized in the central cylinder reaction chamber provided with the helical blades to carry out laminar flow state flocculation reaction on three particles of raw iron sheet particles, oil flocculation particles and return sludge particles under the condition of rotational flow rising waterpower, so that large particles of sludge in oil are formed. Therefore the utility model discloses whole adopt water conservancy to mix and react, need not set up electric mixer and have power to mix and react, for unpowered equipment, can prolong equipment life cycle, reduce the plant maintenance, save the operation charges of electricity.

The utility model discloses deoiling is efficient, the mud backward flow volume is big. The sludge backflow of the existing chemical oil remover depends on a stirring impeller arranged in the middle of a tank to mechanically lift low-concentration sludge on the upper part of a sludge area into backflow sludge, the backflow concentration of the sludge is low, the backflow amount is small, and the water outlet effect is poor. And the utility model discloses in, through installing the terminal water dart of inlet tube at mud district middle part, hydraulic lifting is in the high concentration mud sediment at sludge thickening layer middle part, flows back to a pond central cylinder flocculation reaction chamber, consequently the utility model discloses rely on the water power of water dart to take out the high concentration mud that rises thickening layer middle part as the backward flow mud sediment, guaranteed 3 ~ 5 times mud sediment backward flow volume. The backward flow dregs of large quantities of high concentration has more collision chances with the raw water impurity granule that has added the medicament, and the flocculation effect is good because of the flocculation granule in the backward flow dregs of large quantities of high concentration differs great with the impurity granule particle diameter in the intaking, and the contact that can full play high concentration backward flow dregs of high concentration filters flocculation, has consequently further optimized the utility model discloses a treatment effect has also promoted the change adaptability to raw water yield, quality of water and temperature.

The utility model discloses can make full use of excess pressure of intaking. High-efficient degreaser is as secondary sedimentation tank, and its water intaking generally all is by the water pump pressurization of an iron sheet sedimentation tank come, the utility model discloses a water dart just in time can make full use of this partial pressure excess pressure of intaking, need not adopt the water pump pressurization specially because adopt the water dart like this. Raw water passes through a water inlet pipe and a nozzle of a water injector from the bottom of the tank, the raw water is sprayed into a flocculation reaction chamber of a central cylinder of the tank at a high speed by utilizing the residual pressure of the inlet water, then, under the push of water flow, slag water flows to an inclined tube sedimentation area, and after the slag water is separated, clarified water overflows from an overflow weir at the upper part of the tank and is discharged.

The utility model discloses can realize going out water evenly, improve out water quality of water. In the prior art, the clear water area at the upper part of the oil remover tank body adopts the annular water collecting tank to freely flow out by gravity, and due to the factors of manufacturing and installation of the annular water collecting tank and the like, the water outlet overflow weir is not on the same horizontal line, the water outlet uniformity is limited, and the water quality of the outlet water is directly influenced. And the utility model discloses in, but the play water of two clarification districts in upper portion and middle part all adopts the disc water-collecting tray pressure-bearing play water that can bottom and peripheral intake, and the homogeneity of play water can be guaranteed to this kind of pressure play water, is favorable to improving precipitation efficiency, improves out water quality of water.

The utility model discloses can realize row mud even, quick and thoroughly. In the prior art, a single-pipe sludge discharge pipe is usually adopted for a sludge discharge pipe at the bottom of a pool, so that the requirements of instantaneous large flow, rapidness and uniformity of sludge discharge are difficult to meet. The utility model discloses the row's mud in upper portion clarification district adopts two annular porous row's mud branch pipes, a row's mud house steward and the electric butterfly valve of opening soon that link to each other, can realize that row's mud is abundant, even, quick and large-traffic row's mud in the twinkling of an eye, when the quick row's of clean mud district piles up mud in a row's mud cycle internal timing, has avoided blocking up the degreaser because of mud to extension equipment life.

The utility model discloses be convenient for equipment maintenance and maintenance. The utility model discloses a pressure-bearing formula equipment, for extension equipment life cycle, the equipment maintenance and the maintenance of being convenient for, except above unpowered equipment, characteristics such as thoroughly arrange mud fast can prolong equipment life cycle, still taken following measure: the inclined tube layer is provided with a flushing pipeline. The utility model discloses a large aperture thick wall pipe chute, pipe chute top are equipped with two annular high-pressure water washing pipelines that have the nozzle simultaneously, regularly wash the deposit at the mud of pipe chute inner wall, have avoided blockking up the pipe chute precipitate layer because of mud to extension equipment life cycle. The filtering layer adopts gas and water mixed back washing. The lower sand filtering layer adopts single-layer graded quartz sand filtering materials with relatively large grain diameter and adopts gas and water mixed backwashing, the filtered effluent of one oil remover can be used as a backwashing water source of the other oil remover, backwashing is automatically or regularly carried out according to the water inlet and outlet pressure difference or time period, and the gas and water combined backwashing can more thoroughly backwash the quartz sand filtering layer so as to prolong the service life of equipment.

The utility model discloses an automatic control, easy operation. The utility model discloses collect continuous water inlet, go out water in succession, filter layer air water is interrupted the backwash, is interrupted row mud and pipe chute and is interrupted the backwash in an organic whole, all adopt electronic timing automatic or manual control, easy operation. In addition the utility model discloses equipment top, upper and lower two-layer lateral wall and division board all are equipped with the maintenance manhole, and the equipment bottom is equipped with the blow-down pipe, the maintenance of the equipment of being convenient for.

The steel structure tank body can shorten the construction period. The utility model discloses all adopt steel construction welding preparation, traditional steel-concrete structure cell body is compared in integrative complete set supply, has reduced civil engineering volume, has shortened the construction cycle of whole equipment, and steel construction equipment makes and the scene installation takes one's place more in a flexible way simultaneously, the needs of the on-the-spot overall layout of adaptable engineering.

Drawings

Fig. 1 is a schematic top view of an embodiment of the present invention.

Fig. 2 is a schematic sectional view along a-a in fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1 and 2, the single-layer pressure type integrated oil remover of the present invention comprises an oil remover steel pressure-bearing shell 1, which is divided into two layers, namely an upper inclined tube clarification layer and a lower filtration layer, by the shell 1, and is provided with a separation plate 2 to completely separate the upper inclined tube clarification layer from the lower filtration layer. The water inlet pipe 3 of the oil remover is provided with a water inlet electric butterfly valve 4 and a pipeline mixer 5, the water inlet end of the pipeline mixer 5 is provided with a coagulant adding port 6, and the water outlet end is provided with an oil flocculant adding port 7.

Upper inclined tube clarification layer: the end of the water inlet pipe 3 is connected with a nozzle 9 of the water ejector arranged in a sludge area 8 of an upper inclined pipe clarification layer, the nozzle 9 is arranged in a horn-shaped annular cover pipe 10, and the upper contraction end of the annular cover pipe 10 is connected with a throat pipe 11 of the water ejector. The upper inclined tube clarifying layer is provided with an inner partition plate 12 and an outer partition plate 13, meanwhile, the periphery of the upper part of the inner partition plate 12 is provided with a flow guide hole 14, a central cylinder reaction chamber 15 is communicated with a circular flow guide chamber (annular cavity) 16, an inclined tube settling zone 17 is arranged between the outer partition plate 13 and the shell 1, thus, a circular column region between the outer partition plate 13 and the shell 1 is divided into a lower separation chamber 18 and an upper clear water region 19 through the inclined tube settling zone 17, the top of the upper inclined tube clarifying layer is provided with a water collecting disc 20, the peripheral side wall and the outer edge circular ring at the bottom of the water collecting disc 20 are provided with water inlet holes 21, a water outlet pipe 22 through the side wall of the disc is communicated with a water inlet and distribution region 23 of the lower filtering layer, clear water in the clear water region 19 is collected to the water collecting disc 20 through the water inlet holes 21. An inner porous sludge discharge ring pipe 24, an outer porous sludge discharge ring pipe 25 and a sludge discharge main pipe 26 are installed at the bottom of the sludge area 8, and an electric quick-opening butterfly valve 27 is arranged on the sludge discharge main pipe 26 extending out of the tank to control the timed and intermittent discharge of sludge in an upper inclined pipe clarification layer. An inner porous washing ring pipe 28, an outer porous washing ring pipe 29 and a washing main pipe 30 are arranged at the top of the inclined pipe settling zone 17, and an electric quick-opening butterfly valve 31 is arranged on the washing main pipe 30 extending out of the tank and used for controlling the timing and intermittent washing of the inclined pipe.

A lower filter layer: the lower filtering layer consists of a water inlet and distribution area 23, a quartz sand filtering material 32 and a water outlet and collection area 33, and the clarified water of the upper inclined tube clarifying layer enters the water inlet and distribution area 23 in the filtering layer at the bottom of the oil remover through a water collection disc 20 and a water outlet pipe 22. The bottom of the quartz sand filter material 32 is connected with a water outlet collecting area 33, the water outlet collecting area 33 is connected with a filtered water main water outlet pipe 34 at the bottom of the oil remover, a water outlet electric butterfly valve 35 is arranged on the main water outlet pipe 34, a backwashing water inlet electric butterfly valve 37 is arranged on a filter material backwashing water inlet pipe 36 at the bottom of the oil remover and is communicated with the main water outlet pipe 34 through an elbow 38 and a tee joint 39, a filter material backwashing water outlet pipe 40 is arranged at the upper part of a water inlet water distribution area 23 below the isolation plate 2, and a backwashing water outlet electric butterfly valve 41 is arranged on the backwashing water outlet pipe 40 extending out of the device. A compressed air distribution ring pipe 42 and an air inlet main pipe 43 for backwashing are arranged in the water outlet collecting area 33, and an air inlet electric butterfly valve 44 is arranged on the air inlet main pipe 43 extending out of the equipment and used for controlling the backwashing of the filter layer by timing and intermittent air.

In the embodiment, the housing 1 is circular, and the material of the housing 1 is welded by using a steel plate. Single seat the utility model discloses an internal diameter is generally selected:

the water treatment amount of a single unit is generally 100-800 m 3/h. Water quality of inlet water: the suspended matter SS is less than or equal to 200-500 mg/L, and the oil is less than or equal to 30-50 mg/L. And (3) effluent quality: the suspended matter SS is less than or equal to 5-20 mg/L, and the oil is less than or equal to 2-5 mg/L.

The water inlet pipeline in the embodiment is provided with a high-efficiency pipeline mixer 5 for sequentially feeding and mixing the coagulant and the oil flocculant. Flow rate of the mixer: 1.0-1.5 m/s; loss of head in the pipe: 0.5 to 1.0m, and the length of the mixer is about 1500-; this example requires the addition of two agents: coagulants and oil flocculants. The coagulant is mainly used for removing solid particles in a particulate or colloidal state from suspended solids in sewage. The oil flocculant can be used for removing oil in sewage, including emulsified oil and floating oil, and removing suspended solid, including solid particles in a micro-particle and colloidal state. The dosage of each medicament is determined by tests according to the water quality of raw water. The two agents are administered separately and independently in sequence: coagulant is added at the water inlet end, then oil flocculant is added at the water outlet end, and the oil flocculant is mixed by utilizing the subsequent water inlet straight pipe, the subsequent elbow and the subsequent water injector, so that the mixing time can be prolonged, and the mixing effect can be improved.

The water ejector in the embodiment comprises three parts, namely a nozzle, a throat pipe, a bell mouth and an annular cover pipe, wherein the clear distance between the nozzle and the throat pipe of the water ejector can adopt a fixed distance or an adjustable clear distance of an adjustable throat pipe, and the water ejector mainly has the functions of secondary quick mixing of a medicament and return sludge and hydraulic pumping of the return sludge. The mud residue reflux amount is 2-4 times of the water inlet flow.

The inclined tube settling zone 17 in the embodiment adopts a plastic sheet to hot press a hexagonal honeycomb inclined tube, which has a regular hexagonal section and is made of nontoxic polyvinyl chloride or polypropylene; the inner diameter phi is 50-80 mm, the inclined length is 1000mm, and the inclination angle is 60 degrees.

The bottom quartz sand filter material 32 in this embodiment is a single-layer quartz sand filter material, which consists of: the diameter d10 of the quartz sand is 0.55-1.6, the uneven coefficient K80 is less than 1.4-2.0, the thickness of the filter material is 0.6-1.6 m, the filtering speed is 7-45 m/h, the quartz sand filtering layer adopts gas and water mixed back washing, the back washing water source can be pressurized by a special water pump, or the filtered water of one oil remover can be used as the back washing water source of the other oil removers.

In the embodiment, the volume of the sludge area 8 is calculated according to the sludge amount in one sludge discharge period, and the intermittent sludge discharge can improve the sludge discharge concentration of sludge and reduce the water consumption. The bottom of the sludge area is provided with a plurality of porous sludge discharge ring pipes which are connected with each other. A quick electric sludge discharge butterfly valve is arranged on a sludge discharge main pipe of the tank, the sludge discharge duration is controlled within 2-10 minutes, and the sludge discharge period is determined according to the amount of dry sludge of iron scales, and is generally 8-24 hours.

The working process of the utility model is as follows:

firstly, the oily sewage containing certain inlet water pressure and sent by a primary iron sheet sedimentation tank pressure pump room pressure pump passes through a pipeline mixer 5 arranged on a main water inlet pipe 3, the raw water is firstly mixed with a coagulant 6 which is already added at the water inlet end and then passes through the pipeline mixer 5, and then is mixed with an oil flocculant 7 which is already added at the water outlet end. The raw water mixed with the two medicaments enters a water injector nozzle 9 in a sludge area 8 of an upper inclined tube clarification layer through a water inlet pipe 3, is sprayed into a throat 11 at a high speed through the nozzle 9 by utilizing the water inlet pressure, a negative pressure area is formed around the nozzle 9 in a bell mouth at the lower part of the throat 11 and an annular cover tube 10, so that high-concentration return sludge in the middle of the sludge area 8 which is several times as high as the raw water is sucked into the throat 11, and the raw water mixed with the two medicaments and the return sludge are violently mixed in the throat 11 and then are sent to a central barrel reaction chamber 15 for flocculation reaction. The slag-water mixed liquor which has completed the flocculation reaction flows to a separation chamber 18 and an inclined tube settling zone 17 through a diversion hole 14 and a circular diversion chamber 16 for slag-water separation. The clarified water flows upwards through the clear water layer 19, flows together to the water collecting disc 20 through the water inlet hole 21, then flows back downwards through the water outlet pipe 22 to the water inlet water distribution area 23 of the lower filtering layer, enters the quartz sand filtering material layer 32 for sand filtering, the filtered water is collected to the water outlet water collecting area 33, and is discharged through the water outlet pipe 34 after being filtered by the bottom of the oil remover. The sludge settled down to the sludge blanket 8 in the separation chamber 18 is divided into two parts: wherein a part of the sludge is sucked into the throat pipe 11 by the nozzle 9 of the water injector to form a backflow sludge recirculation, and the circulation is repeated in this way, and the ratio of the raw water flow to the sludge backflow is 1: 2 to 1: 5. The other part of the sludge is deposited at the bottom of the sludge layer 8 and is discharged intermittently in a sludge discharge period through the inner porous sludge discharge ring pipe 24, the outer porous sludge discharge ring pipe 25 and the sludge discharge main pipe 26. An electric quick-opening butterfly valve 27 is adopted to control the timing and discontinuous discharge of the sludge of the upper inclined tube clarification layer. The sludge deposited on the inner wall of the inclined tube for a long time is removed, the inclined tube is periodically backwashed by adopting an inner porous washing ring tube 28, an outer porous washing ring tube 29 and a washing main pipe 30 which are arranged at the top of the inclined tube settling area 17, and the timing washing of the inclined tube is controlled by an electric quick-opening butterfly valve 31.

The bottom quartz sand filtering layer adopts gas and water mixed back flushing, a back flushing water source can be pressurized by a special water pump, or the filtered water outlet of one oil remover can be used as the back flushing water source of other oil removers. The backwashing water enters the quartz sand filter material layer 32 through a filter material backwashing water inlet pipe 36 at the lower part of the oil remover, and water backwashing is carried out on the filter material. Compressed air enters the quartz sand filter material layer 32 through the air inlet main pipe 43 and the air distribution ring pipe 42, and the filter material is subjected to air backwashing. The gas-water mixed liquid generated by backwashing the quartz sand filter material layer 32 by gas-water mixing is discharged through the backwashing water discharge pipe 40. The air-water mixing backwashing period and the backwashing time are realized by the five electric valves of a water inlet electric butterfly valve 4, a water outlet electric butterfly valve 35, a backwashing water supply electric butterfly valve 37, a backwashing water discharge electric butterfly valve 41 and an air inlet electric butterfly valve 44 according to a set program for backwashing the filter layer at regular time or according to differential pressure.

The present invention is not limited to the above embodiments, and any change in shape or structure can be made, and all the above modifications are the present invention, and the present invention is considered to fall within the protection scope of the present invention.

Claims

1. A single-layer pressure type integrated oil remover comprises a shell (1) provided with a water inlet pipe (30) and a partition plate (2) arranged in the shell, and is characterized in that the partition plate divides the interior of the shell into an upper space and a lower space which are independent, the upper space is an inclined tube clarifying layer, and the lower space is a filtering layer; wherein,

the upper inclined tube clarification layer is internally provided with a water collecting disc (20) at the top, the water collecting disc is provided with a water inlet hole (21) and a water outlet pipe (22) communicated with the filtration layer, and the bottom is provided with a cylindrical inner partition plate (12) and an outer partition plate (13); an annular cavity (16) with the bottom communicated with the upper inclined tube clarification layer is formed between the cylindrical inner partition plate and the cylindrical outer partition plate, and flow guide holes (14) are formed in the periphery of the top of the inner partition plate and communicated with a reaction chamber (15) inside the inner partition plate and the annular cavity; the water inlet pipe extends into the bottom of the cylindrical inner partition plate from the bottom of the shell; the annular cylindrical region between the outer baffle and the housing is divided into three zones: an inclined tube settling zone (17) at the middle part, a separation zone (18) at the lower part and a clear water zone (19) with a water collecting disc at the upper part;

the lower filtering layer consists of a water inlet and distribution area (23), a quartz sand filtering material area (32) and a water outlet and collection area (33) from top to bottom, the water outlet pipe is communicated with the water distribution area, a filtering material backwashing water outlet pipe (40) is arranged at the upper part of the water distribution area, the bottom of the quartz sand filtering material area is connected with the water outlet and collection area, and the water outlet and collection area is connected with a filtered water main water outlet pipe (34) arranged at the bottom of the oil remover, a filtering material backwashing water inlet pipe (36) and a compressed air backwashing air inlet pipe (43).

2. The single-layer pressure type integrated oil remover as claimed in claim 1, wherein the shell is a pressure-bearing steel shell, and an automatic exhaust valve (45) and a safety valve (46) are arranged at the top of the shell.

3. The single-layer pressure type integrated oil remover as claimed in claim 2, wherein the water inlet pipe (3) located outside the shell is provided with a water inlet electric butterfly valve (4) and a pipeline mixer (5) with two dosing ports, the water inlet end of the pipeline mixer (5) is provided with a coagulant dosing port (6), and the water outlet end is provided with an oil flocculant dosing port (7); the pipeline mixture and the water ejector are used for hydraulic mixing and reaction to provide power for stirring the sewage in the shell.

4. The single-layer pressure type integrated oil eliminator as claimed in claim 3, characterized in that the end of the water inlet pipe (3) is connected with the nozzle (9) of the water ejector, the nozzle (9) is installed in a trumpet-shaped annular cover pipe (10), and the annular cover pipe (10) is connected with the throat (11) of the water ejector; the water injector consists of three parts of a nozzle, a throat pipe, a bell mouth and an annular cover pipe.

5. The single-layer pressure type integrated oil remover as claimed in claim 3, characterized in that an inner porous sludge discharge ring pipe (24), an outer porous sludge discharge ring pipe (25) and a sludge discharge main pipe (26) are installed at the bottom of the sludge area (8) of the upper inclined tube clarification layer, and an electric quick-opening butterfly valve (27) for controlling the timed and discontinuous discharge of sludge of the upper inclined tube clarification layer is arranged on the sludge discharge main pipe (26) extending out of the tank.

6. The single-layer pressure type integrated oil remover as claimed in claim 5, wherein: an inner annular porous flushing pipe (28) and an outer annular porous flushing pipe (29) are arranged at the top of an inclined pipe settling zone (17) of the upper inclined pipe clarification layer and are communicated with a flushing main pipe (30), and an electric quick-opening butterfly valve (31) for controlling the inclined pipes to be flushed at regular intervals is arranged on the flushing main pipe (30) extending out of the shell.

7. The single-layer pressure type integrated oil remover as claimed in claim 6, wherein: the water outlet and collecting area (33) of the lower filtering layer is connected with the filtered water main water outlet pipe (34), the water outlet electric butterfly valve (35) is arranged on the main water outlet pipe (34), and the backwashing water inlet electric butterfly valve (37) is arranged on the filtering material backwashing water inlet pipe (36) at the bottom of the oil remover and is communicated with the main water outlet pipe (34) through an elbow (38) and a tee joint (39).

8. The single-layer pressure type integrated oil remover as claimed in claim 7, wherein: the upper part of the water inlet and distribution area (23) positioned below the isolation plate (2) is provided with a filter material backwashing water discharge pipe (40), and the backwashing water discharge pipe (40) extending out of the device is provided with a backwashing water discharge electric butterfly valve (41) for controlling backwashing water discharge of the filter layer.

9. The single-layer pressure type integrated oil remover according to claim 8, wherein: a compressed air distribution ring pipe (42) and an air inlet main pipe (43) for backwashing are arranged in the water outlet collecting area (33) of the lower filtering layer, and an air inlet electric butterfly valve (44) for controlling air backwashing on the filtering layer is arranged on the air inlet main pipe (43) extending out of the equipment.