CN106145531A - A kind of method and system of quick process edible fat production sewage - Google Patents

A kind of method and system of quick process edible fat production sewage Download PDF

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Publication number
CN106145531A
CN106145531A CN201610631110.7A CN201610631110A CN106145531A CN 106145531 A CN106145531 A CN 106145531A CN 201610631110 A CN201610631110 A CN 201610631110A CN 106145531 A CN106145531 A CN 106145531A
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China
Prior art keywords
sewage
oil
flocculation
treatment
water
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CN201610631110.7A
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Chinese (zh)
Inventor
吴亮鑫
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HENAN YIFENG EDIBLE OILS Co Ltd
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HENAN YIFENG EDIBLE OILS Co Ltd
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Priority to CN201610631110.7A priority Critical patent/CN106145531A/en
Publication of CN106145531A publication Critical patent/CN106145531A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
    • C02F2103/322—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters from vegetable oil production, e.g. olive oil production
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Activated Sludge Processes (AREA)

Abstract

The invention discloses the method and system of a kind of quick process edible fat production sewage, collect edible oil factory sewage, the waste water of collecting pit is extracted in oil interceptor from stream mode by underground, when oil interceptor surface oil slick reaches certain thickness, oil slick is scraped oil extraction ditch and is discharged to dirty oil tank in fatty acid tank, sewage after oil removal being processed carries out flocculation treatment, float in sewage is made to form flocculation sediment, and tentatively reduce the COD value of sewage, water outlet after flocculation treatment carries out plate-and-frame filtration, the flocculation sediment of formation is filtered to remove, filter water outlet and carry out Aerobic Process for Treatment, aerobic bacteria is utilized to digest the COD in water, outputted aerobic water carries out anaerobic treatment, anaerobe is utilized to remove the larger molecular organics in sewage, obtain the clear water that can directly discharge.

Description

A kind of method and system of quick process edible fat production sewage
Technical field
The present invention relates to the technical field of a kind of sewage disposal, particularly to a kind of quick process edible fat production sewage Method and system.
Background technology
Along with fast development and the raising of living standards of the people of China's economy, edible fat production producer of China is the most increasingly Many, the waste water of oil factory processes the attention more and more causing manufacturer.Oil factory can produce substantial amounts of waste water in process of production, this A little waste water mainly have the continuous alkali-refining centrifuge discharge soap water of milk yellow, the fatty sour water of level Four vacuum system discharge, flushing to set Standby, steam condensate (SC), boiler blowdown water etc., wherein take off soap machine flow out soap water COD be up to 30000mg/L, float up to 10000mg/L.Containing a small amount of acid, alkali, inorganic salt, solid suspension in waste water, such as: crumb, phospholipid, soap stock, protein adhesive Bodies etc., possibly together with Organic substances such as abundant fatty acid, pigment, aromatic compounds.If these sewage do not carry out processing and direct Enter in water body, not only result in the death of organism in water, and agricultural irrigation can be affected and resident drinks, cause serious ring Environment pollution.Furthermore, country is strengthening environmental protection dynamics and is improving environmental regulation, if wastewater processing technology does not passes a test, equipment is not Supporting, will be eliminated in new round keen competition.
The water quality using high concentration and low concentration when in prior art processing edible fat production sewage is separated Carry out the mode processed, the first sewage to high concentration oil-containing and carry out oil removal, coagulating sedimentation, anaerobism activation, catalytic oxidation etc. Reason, reduces oil content and the COD value of high concentration oil-polluted water, with low in the regulating reservoir of the sewage entrance low concentration oil-containing after process Concentration oily waste water carries out mixing regulation, also needs to carry out coagulation, oxidation and air supporting etc. reason afterwards and just can obtain meeting discharge The clear water of standard.Prior art is long to the handling process of edible fat production sewage, and processing speed is slow, operation complexity, and needs Adding the materials such as sulphuric acid, ferrous sulfate, quick lime, aluminum sulfate, cost is high.
Summary of the invention
In view of this, present invention aim at providing a kind of technique simple, processing speed is fast, and operating cost is low, put into into These low method and system quickly processing edible fat production sewage.
In order to realize foregoing invention purpose, the present invention provides techniques below scheme:
A kind of method that the invention provides quick process edible fat production sewage, comprises the steps: by sewage successively Carry out oil removal process, flocculation treatment, filtration treatment, Air Exposure and anaerobic treatment；
Preferably flocculation treatment uses flocculant to carry out, and described flocculant is aluminium polychlorid or polychloride ferro-aluminum；
Preferably flocculant quality addition in sewage is 0.01%～1%；
Preferably the time of flocculation treatment is 1～10min；
Preferably filtration treatment is plate-and-frame filtration, and the plate-and-frame filtration area that unit volume sewage needs is 50～500m2；
The preferably Air Exposure time is 30～90min；
Preferably the time of anaerobic treatment is 30～90min.
The invention provides the system of a kind of quick process edible oil factory sewage, including the oil interceptor sequentially connected, flocculation Pond, flame filter press, clear water reserviors, Aeration tank and anaerobic pond；
Preferably also include the sewage collecting pool that outlet is connected, described sewage collecting pool with described oil interceptor water inlet The degree of depth be 2～5m, the volume of single sewage collecting pool is 10～100m3；
Preferably oil interceptor is the half-pipe that bottom communicates；
Preferably being provided with self-circulating device in flocculation basin, flocculation basin number is 2～4, and described flocculation basin is connected in parallel, The volume of each flocculation basin is 30～50m3；
Preferably the volume of Aeration tank is 20～100m3；Roots blower, described Roots's wind are installed bottom described Aeration tank The packing density of machine is 0.2～1m2/.
A kind of method that the invention provides quick process edible fat production sewage, comprises the steps: by sewage successively Carry out oil removal process, flocculation treatment, filtration treatment, Air Exposure and anaerobic treatment.First edible oil sewage carried out by the present invention Oil removal processes, and removes the most of oils and fats in sewage, makes the float in sewage form flocculation sediment by flocculation treatment afterwards, Processed by plate-and-frame filtration again and flocculation sediment is removed, thus remove the float in sewage, utilize aerobic bacteria to digest afterwards Filtering the COD in water outlet, outputted aerobic water carries out anaerobic treatment, utilizes anaerobe to remove the larger molecular organics in sewage, obtains The clear water that can directly discharge.The method step that the present invention provides is few, processing speed fast, only needs in sewage in processing procedure Adding flocculant, processing cost is low, and high treating effect.Test result indicate that, the sewage load of the method for the invention can To reach 200～1000m3/ sky, suspension content as little as 30mg/L in the sewage after using the method for the invention to process, changes Oxygen consumption is 30mg/L, and oil content is 5.1mg/L, can reach state three grade emissioning standard.
Accompanying drawing explanation
The high-concentration ammonia nitrogenous wastewater handling process schematic diagram that Fig. 1 provides for the embodiment of the present invention；
In Fig. 1: 1-sewage collecting pool；2-oil interceptor；31-the first flocculation basin；32-the second flocculation basin；33-the 3rd flocculates Pond；34-the 4th flocculation basin；4-flame filter press；5-clear water reserviors；6-Aeration tank；7-anaerobic pond.
Detailed description of the invention
A kind of method that the invention provides quick process edible fat production sewage, comprises the steps: by sewage successively Carry out oil removal process, flocculation treatment, filtration treatment, Air Exposure and anaerobic treatment；
The process object of the method that the present invention provides is edible fat production sewage, mainly has continuous alkali-refining centrifuge discharge breast The fatty sour water of the soap water of yellow, level Four vacuum system discharge, flushing device, steam condensate (SC), boiler blowdown water etc., wherein take off The soap water COD that soap machine flows out is up to 30000mg/L, and float is up to 10000mg/L.
First edible fat production sewage is carried out oil removal process by the present invention, removes the oils and fats in sewage.The present invention preferably makes By physics oil removal method, sewage is carried out oil removal process, sewage is sent in oil interceptor, utilize the density contrast of float and oils and fats Different make oils and fats float on wastewater surface, oil slick is scraped oil extraction ditch and is discharged in dirty oil tank and fatty acid tank；The present invention is preferably by dirt Water carry out in the U-shaped oil interceptor that bottom is connected adverse current method realize oil-water separation, the speed of described adverse current be preferably 1～ 5m3/ h, more preferably 2～4m3/h.It is bigger that the present invention processes, by oil removal, oil droplet and granule that in removal waste water, particle diameter is bigger Solid matter.
After oil removal has processed, oil removal water outlet is carried out flocculation treatment by the present invention.Present invention preferably employs flocculant to institute Stating oil removal water outlet and carry out flocculation treatment, described flocculant is preferably aluminium polychlorid and/or polychloride ferro-aluminum；The present invention is with polymerization Aluminum chloride and/or polychloride ferro-aluminum are flocculant, make the colloid of small granular suspended matters in sewage and dispersion at molecular force Generate flock, and collision cohesion in infall process under interaction, form flocculation sediment.In the present invention, described wadding Solidifying agent quality addition in sewage is preferably 0.01%～1%, more preferably 0.1～0.8；Most preferably 1～3%.Institute Stating time of flocculation treatment is preferably 1～10min, more preferably 2～8min, most preferably 3～4min.The present invention is preferably stirring Carrying out flocculation treatment under the conditions of mixing, described mixing speed is preferably 30～45 revs/min, more preferably 35～40 revs/min.
After flocculation treatment completes, flocculation water outlet is carried out filtration treatment by the present invention, is formed during removing flocculation treatment Flocculation sediment, from reaching to remove the purpose of sewage small particles float.In the present invention, described filtration treatment is preferably sheet frame Filtering, the plate-and-frame filtration area that unit volume sewage needs is preferably 50～500m2, more preferably 100～400m2, most preferably 200～300m2。
Oils and fats, the flocculation sediment separated enter dirty oil tank and are further processed.
After filtration treatment completes, the present invention will filter out water and carries out Air Exposure, provides dissolved oxygen for aerobic microbiological, from And reach to decompose dirty Organic substance in water, the purpose of removal COD.In the present invention, the time of described Air Exposure be preferably 30～ 90min, more preferably 40～80min, most preferably 50～60min.The aeration rate of described Air Exposure is preferably 10～20m3/ H, more preferably 12～18m3/h。
After Air Exposure completes, Air Exposure water outlet is carried out anaerobic treatment by the present invention, by macromole remaining in sewage Organic substance decomposes, and removes the COD in sewage further, obtains the clear water that can directly discharge.In the present invention, at described anaerobism The time of reason is preferably 30～90min；More preferably 40～80min, most preferably 50～60min.
The invention provides the system of a kind of quick process edible oil factory sewage, including the oil interceptor sequentially connected, flocculation Pond, flame filter press, clear water reserviors, Aeration tank and anaerobic pond.
Seeing Fig. 1, the processing system that the present invention provides the most also includes that outlet is connected with described oil interceptor water inlet Sewage collecting pool (1), be used for collecting edible fat production sewage.In the present invention, the degree of depth of described sewage collecting pool is preferably 2 ～5m, more preferably 3～4m；The volume of single sewage collecting pool is preferably 10～100m3, more preferably 20～80m3, most preferably It is 40～60m3。
The processing system that the present invention provides includes oil interceptor (2).Concrete, in an embodiment of the present invention, described oil removal Pond is the half-pipe that bottom is identical, and the water inlet of described oil interceptor is arranged on half-pipe side at top, pond 0.2～0.5m；Described every The outlet of oil sump is arranged on half-pipe opposite side at the bottom of pond 0.2～0.5m.The present invention utilize half-pipe unique model and Oil in Sewage Water fat makes oils and fats form the effect of adverse current with sewage, so that oils and fats floats to rapidly water with the gravity difference of float Face, thus reach to promote the purpose of oil-water separation.
The processing system that the present invention provides includes flocculation basin (3), is preferably provided with self-circulating device in described flocculation basin, wadding Solidifying pond number is preferably 2～4, and the volume of each flocculation basin is preferably 30～50m3, more preferably 35～45m3.Described flocculation Pond mode the most in parallel is connected with the oil interceptor of upstream and the flame filter press in downstream respectively, in concrete enforcement In example, can be according to the use number in the size selective flocculation pond of sewage load.
The processing system that the present invention provides includes clear water reserviors (4), and the volume of described clear water reserviors is preferably 10～100m3, more It is preferably 20～80m3, most preferably 40～60m3；In the present invention, if the water quality in sewage collecting pool is preferable, sheet frame is passed through Filtration treatment can directly obtain the clear water that can discharge, then can directly be discharged by the water in clear water reserviors.
The processing system that the present invention provides includes Aeration tank (6), and the volume of Aeration tank is preferably 20～100m3, more preferably It is 40～80m3；Being provided with roots blower bottom described Aeration tank, the packing density of described roots blower is preferably 0.2～1m2/ Individual, more preferably 0.5～0.8m2/.
The processing system that the present invention provides includes anaerobic pond (7), and the volume of anaerobic pond is preferably 20～100m3, more preferably It is 40～80m3。
Sewage collecting pool in the present invention, oil interceptor, flocculation basin, clear water reserviors, the water inlet of Aeration tank are all disposed within distance At top, pond 0.2～0.5m, outlet is arranged at the bottom of pond 0.2～0.5m；Anaerobic pond water inlet in the present invention is arranged on At top, distance pond 0.2～0.5m, outlet is arranged at top, distance pond 0.5～1m；Water is passed through between each device of the present invention Pump realizes the circulation of sewage, and described water pump lift is preferably 10～50 meters, more preferably 20～40 meters, the power of described water pump It is preferably 2～5.5kw, more preferably 3～5kw.
The sewage load of system of the present invention can reach 200～1000m3/ sky, the water flow in processing procedure Can be adjusted according to the difference for the treatment of capacity.
In the present invention, sewage initially enters in sewage collecting pool (1), afterwards the sewage collected is extracted into oil interceptor (2) carrying out physics oil removal process in, sewage is sent in flocculation basin (3) after having processed and is carried out flocculation treatment by oil removal, flocculates Water is sent in clear water reserviors (4), then will carry out plate-and-frame filtration in water feeding flame filter press (5) in clear water reserviors, and plate-and-frame filtration goes out Water enters and carries out Air Exposure in Aeration tank (6), and Aeration tank water outlet enters in anaerobic pond (7) and carries out anaerobic treatment, obtains permissible The directly clear water of discharge.
The method and system quickly processing edible fat production sewage provided the present invention below in conjunction with embodiment are carried out in detail Thin explanation, but they can not be interpreted as limiting the scope of the present invention.
Embodiment 1
Collect edible fat production sewage water in sewage collecting pool, after testing concentration of suspension in sewage in sewage collecting pool For 1230mg/L, COD be 13500mg/L, oil content be 35mg/L, will the sewage suction oil interceptor in sewage collecting pool be passed through Adverse current precipitation makes oil-water separation, uses scraper plate to be struck off by oils and fats；After oil removal has processed, the sewage in oil interceptor is sent into flocculation Carrying out flocculation treatment in pond, add aluminium polychlorid in sewage, controlling addition is the 0.01% of sewage quality, opens flocculation Self-circulating device in pond, controlling circulation rate is 30 revs/min, it can be seen that water quality is substantially layered after circulation 1min；Will wadding Sewage feeding flame filter press after solidifying process completes carries out plate-and-frame filtration, and the plate-and-frame filtration area controlling unit volume sewage is 50m2, the water outlet after plate-and-frame filtration is sent in clear water reserviors and does temporary transient storage, afterwards water in clear water reserviors is sent in Aeration tank Carrying out Air Exposure, control aeration time is 30min, is provided with roots blower bottom Aeration tank, and packing density is 0.2 square Rice/；After Air Exposure completes, Aeration tank water outlet enters in anaerobic pond and carries out anaerobic treatment, controls the anaerobic treatment time and is 30min, after anaerobic treatment completes, obtains the clear water that can directly discharge；During whole, the treating capacity controlling sewage is 300m3/ sky.
Use the COD value in the potassium dichromate standard method detection gained clear water in GB11914-89；Use GB11901-89 In gravimetric method detection gained clear water in the concentration of float；Use the infrared spectrophotometry detection gained in GB/T16488-1996 The content of oils and fats in clear water；Acquired results is shown in Table 1.
Embodiment 2
Collect edible fat production sewage water in sewage collecting pool, after testing concentration of suspension in sewage in sewage collecting pool For 2000mg/L, COD be 25100mg/L, oil content be 25mg/L, will the sewage suction oil interceptor in sewage collecting pool be passed through Adverse current precipitation makes oil-water separation, uses scraper plate to be struck off by oils and fats；After oil removal has processed, the sewage in oil interceptor is sent into flocculation Carrying out flocculation treatment in pond, add aluminium polychlorid in sewage, controlling addition is the 1% of sewage quality, opens flocculation basin Interior self-circulating device, controlling circulation rate is 45 revs/min, it can be seen that water quality is substantially layered after circulation 5min；Will flocculation Sewage after having processed is sent into flame filter press and is carried out plate-and-frame filtration, and the plate-and-frame filtration area controlling unit volume sewage is 100m2, the water outlet after plate-and-frame filtration is sent in clear water reserviors and does temporary transient storage, afterwards water in clear water reserviors is sent in Aeration tank Carrying out Air Exposure, control aeration time is 90min, is provided with roots blower bottom Aeration tank, packing density is 1 square metre/ Individual；After Air Exposure completes, Aeration tank water outlet enters and carries out anaerobic treatment in anaerobic pond, and the control anaerobic treatment time is 90min, After anaerobic treatment completes, obtain the clear water that can directly discharge；During whole, the treating capacity controlling sewage is 1000m3/ My god.
COD value, the concentration of float and the content of oils and fats in gained clear water is detected according to the method described in embodiment 1, Acquired results is shown in Table 1.
Embodiment 3
Collect edible fat production sewage water in sewage collecting pool, after testing concentration of suspension in sewage in sewage collecting pool For 1200mg/L, COD be 8200mg/L, oil content be 18mg/L, will the sewage suction oil interceptor in sewage collecting pool be passed through Adverse current precipitation makes oil-water separation, uses scraper plate to be struck off by oils and fats；After oil removal has processed, the sewage in oil interceptor is sent into flocculation Carrying out flocculation treatment in pond, add polychloride ferro-aluminum in sewage, controlling addition is the 0.5% of sewage quality, opens flocculation Self-circulating device in pond, controlling circulation rate is 40 revs/min, it can be seen that water quality is substantially layered after circulation 3min；Will wadding Sewage feeding flame filter press after solidifying process completes carries out plate-and-frame filtration, and the plate-and-frame filtration area controlling unit volume sewage is 60m2, the water outlet after plate-and-frame filtration is sent in clear water reserviors and does temporary transient storage, afterwards water in clear water reserviors is sent in Aeration tank Carrying out Air Exposure, control aeration time is 45min, is provided with roots blower bottom Aeration tank, and packing density is 0.5 square Rice/；After Air Exposure completes, Aeration tank water outlet enters in anaerobic pond and carries out anaerobic treatment, controls the anaerobic treatment time and is 60min, after anaerobic treatment completes, obtains the clear water that can directly discharge；During whole, the treating capacity controlling sewage is 800m3/ sky.
COD value, the concentration of float and the content of oils and fats in gained clear water is detected according to the method described in embodiment 1, Acquired results is shown in Table 1.
Embodiment 4
Collect edible fat production sewage water in sewage collecting pool, after testing concentration of suspension in sewage in sewage collecting pool For 900mg/L, COD be 6200mg/L, oil content be 22mg/L, by the sewage suction oil interceptor in sewage collecting pool by inverse Stream precipitation makes oil-water separation, uses scraper plate to be struck off by oils and fats；After oil removal has processed, the sewage in oil interceptor is sent into flocculation basin In carry out flocculation treatment, in sewage add aluminium polychlorid, control addition be the 0.6% of sewage quality, open flocculation basin Interior self-circulating device, controlling circulation rate is 40 revs/min, it can be seen that water quality is substantially layered after circulation 10min；Will flocculation Sewage after having processed is sent into flame filter press and is carried out plate-and-frame filtration, and the plate-and-frame filtration area controlling unit volume sewage is 80m2, the water outlet after plate-and-frame filtration is sent in clear water reserviors and does temporary transient storage, afterwards water in clear water reserviors is sent in Aeration tank Carrying out Air Exposure, control aeration time is 70min, is provided with roots blower bottom Aeration tank, and packing density is 0.3 square Rice/；After Air Exposure completes, Aeration tank water outlet enters in anaerobic pond and carries out anaerobic treatment, controls the anaerobic treatment time and is 80min, after anaerobic treatment completes, obtains the clear water that can directly discharge；During whole, the treating capacity controlling sewage is 500m3/ sky.
COD value, the concentration of float and the content of oils and fats in gained clear water is detected according to the method described in embodiment 1, Acquired results is shown in Table 1.
Table 1 embodiment 1～4 gained clear water testing result
Project COD/(mg/L) The concentration of float/(mg/L) Oils and fats/(mg/L)
Tri-grades of discharge standards of GB8798-1996 100 70 20
Embodiment 1 58 30 5.1
Embodiment 2 72 35 4.2
Embodiment 3 30 29 3.5
Embodiment 4 55 31 8.1
As can be seen from Table 1, the method and system treatment effect quickly processing edible fat production sewage that the present invention provides Good, be fully able to reach three grades of discharge standards of sewage of national regulation, and the method flow of the present invention is short, processing speed fast, suitable Concentration of wastewater scope wide, it is not necessary to high and low concentration sewage is respectively processed, eliminates the quenched process of mixing, significantly Reduce the processing cost of sewage.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (10)

1. the method for a quick process edible fat production sewage, it is characterised in that comprise the steps: to carry out sewage successively Oil removal process, flocculation treatment, filtration treatment, Air Exposure and anaerobic treatment.
Method the most according to claim 1, it is characterised in that described flocculation treatment uses flocculant to carry out, described flocculation Agent is aluminium polychlorid or polychloride ferro-aluminum；
Described flocculant quality addition in sewage is 0.01%～1%；
The time of described flocculation treatment is 1～10min.
Method the most according to claim 1, it is characterised in that described filtration treatment is plate-and-frame filtration, unit volume sewage The plate-and-frame filtration area needed is 50～500m2。
Method the most according to claim 1, it is characterised in that the described Air Exposure time is 30～90min.
Method the most according to claim 1, it is characterised in that the time of described anaerobic treatment is 30～90min.
6. quickly process the system of edible oil factory sewage, including the oil interceptor sequentially connected, flocculation basin, flame filter press, clear water Pond, Aeration tank and anaerobic pond.
System the most according to claim 6, it is characterised in that also include that outlet is connected with described oil interceptor water inlet Sewage collecting pool, the degree of depth of described sewage collecting pool is 2～5m, and the volume of single sewage collecting pool is 10～100m3。
System the most according to claim 6, it is characterised in that described oil interceptor is the half-pipe that bottom communicates.
System the most according to claim 6, it is characterised in that be provided with self-circulating device, flocculation basin in described flocculation basin Number is 2～4, and described flocculation basin is connected in parallel, and the volume of each flocculation basin is 30～50m3。
System the most according to claim 6, it is characterised in that the volume of described Aeration tank is 20～100m3；Described aeration Being provided with roots blower bottom pond, the packing density of described roots blower is 0.2～1m2/.
CN201610631110.7A 2016-08-04 2016-08-04 A kind of method and system of quick process edible fat production sewage Pending CN106145531A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108383338A (en) * 2018-05-11 2018-08-10 安徽工程大学 A kind of Intelligent sewage processing system
CN108395062A (en) * 2018-05-11 2018-08-14 安徽工程大学 A kind of petrochemical effluent biological treatment device
CN115893730A (en) * 2022-11-22 2023-04-04 怀化市富源油业有限公司 Method for rapidly treating edible oil production sewage and automatic oil-water separation device

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JP2013094704A (en) * 2011-10-28 2013-05-20 Yamaguchi Technology Licensing Organization Ltd Oil-water separator and waste water treatment system including the same
CN103570181A (en) * 2012-07-23 2014-02-12 陕西德融新能源股份有限公司 Treatment technology of oily sewage of biodiesel factories
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Application publication date: 20161123