CN100500582C - Integral separation device and method for kitchen garbage, waste-water and grease - Google Patents

Integral separation device and method for kitchen garbage, waste-water and grease Download PDF

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Publication number
CN100500582C
CN100500582C CNB2007103060108A CN200710306010A CN100500582C CN 100500582 C CN100500582 C CN 100500582C CN B2007103060108 A CNB2007103060108 A CN B2007103060108A CN 200710306010 A CN200710306010 A CN 200710306010A CN 100500582 C CN100500582 C CN 100500582C
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oil
water
jar
waste
gravity
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CN101215020A (en
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梁立宽
刘生奎
吴长亮
谷强
白玉娟
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Qinghai Jieshen Environmental Technology Co.,Ltd.
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Qinghai Jieshen Equipment Manufacture Group Co Ltd
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Abstract

Disclosed are an oil-water separation facility and a method for refuse waste-water of kitchens, which relate to the field of environment protection. The facility and method are composed of three portions which are respectively gravity oil slick, micro-airfloat oil skimming, thick granulating and the like in accordance with grease distribution shape and character of the refuse waste-water of kitchens, wherein the gravity oil removal section automatically excludes upper oil slick, emulsified oil, dispersed oil and the like float off via the micro-airfloat, thereby achieving separation of oil with smaller particles and water, after handling, oily wastewater left by the treatment of the above two sections further proceeds thick granulating process to lead micro-grease to assemble and form the grease with big particle diameter, then the grease with big particle diameter after floating upward is removed, thereby achieving being separated from water. The facility is capable of separating highly effectively the grease in sewage water, reducing organic loading of subsequent sewage water treatment, simultaneously the separated grease can be prepared into biological diesel fuels, soapstocks and the like, thereby improving resource recycling efficiency. The method has the advantages of feasible technique, cheapness and convenience, automation operation, which is not influenced by seasonal difference in temperature.

Description

Oily-water seperating equipment and method in the kitchen garbage, waste-water
Technical field
The present invention relates to the waste water fat separator device and the method for oily-water seperating equipment and method, the especially catering industry in environmental protection field.
Background technology
The urban catering service sector develops rapidly, causes changing food waste to produce in a large number, contains the sewage of a large amount of high density animal-plant oil in the rubbish.And this type of oily(waste)water is different from the hydrocarbon-containifirst petroleum waste water, because grease process pyroprocessing and violent stirring, mixing, its composition and existence form in sewage is comparatively complicated.This kind direct discharging of waste water is to the city domestic sewage pipe network, and grease is attached on easily and easily makes line clogging on the tube wall, and is difficult to mediation, causes great burden for city municipal administration department.When oil wastewater is handled in follow-up sewage work, can cause oxygenation difficulty in the oxidation pond, microorganism active is suppressed, and causes and handles load reduction, effluent quality variation.
Gravity oil removal method commonly used often can only particle diameter is bigger last oil slick and water sepn, and effects such as air supporting method removal dissolving oil are relatively poor, these two kinds of methods commonly used often can not the high efficiency separation grease.Some is handled, and the treatment facility floor space is big, and facility investment is big, and processing costs is higher.Some adopts microbiological degradation grease technology, promptly drops into microorganism in waste water, utilizes the metabolism of microorganism to cut grease, but, decompose the back and produce foul gas and influence atmospheric environment, after particularly grease decomposes because reaction process is long, can't recycle, cause the waste of oil resource.
Summary of the invention
For addressing the above problem, the present invention proposes oily-water seperating equipment and method in a kind of kitchen garbage, waste-water.
The invention provides oily-water seperating equipment in a kind of kitchen garbage, waste-water that relates to the environmental protection field.This device is made up of line mixer 1, gravity oil removal jar 2, little air supporting skimming tank 9, oil and water separation bygranulation jar 12 etc.
Line mixer 1 is connected with gravity oil removal jar 2 bottoms, the inclination angle be housed be 40~60 ° waved plate 3 in oil removal jar 2, gravity oil removal jar 3 tops are equipped with oil skimmer vessel 4, be fixed on the gravity oil removal jar 3 with standing bolt 19, oil skimmer vessel 4 is by motor 20 transmissions, and whether it starts by 5 controls of oil content detection instrument, and gravity oil removal jar 2 bottoms are equipped with vapour pipe 17, vapour pipe 17 connects external steam source---vapour generator 18, in the gravity oil removal jar 2 temperature sensor is housed.
Waste water in the gravity oil removal jar 2 is by the overflow weir 8 air supporting skimming tank 9 in a subtle way that flows automatically, and oil skimmer vessel 11 is installed on the top of little air supporting oil skimmer vessel, and gas release device 10 is installed in the bottom.
Little air supporting skimming tank 9 water outlets are from flowing into oil and water separation bygranulation jar 12; oil and water separation bygranulation jar 12 comprises level pipe 13 and vertical tube 15; vertical tube 15 is perpendicular to level pipe 13; level pipe 13 is positioned at the middle part of vertical tube 15; the water side of level pipe 13 is communicated with the vertical tube middle part, and riser upper portions is equipped with oil skimmer vessel 21, and little air supporting skimming tank water outlet flows in the level pipe 13 of coarse jar; filled modified polypropylene acid amides filtrate 14 in the level pipe 13, filled modified polypropylene 16 in the vertical tube 15.
System is by the PLC centralized Control, and the control node has motor, oil content detection instrument, temperature sensor, vapour source etc.
The present invention also provides the method for oily water separation in a kind of kitchen garbage, waste-water, it is characterized in that:
Kitchen garbage, waste-water enters gravity oil removal jar 2 by line mixer 1, waste water evenly rises along the inclination waved plate, upflow velocity is 5~15m/h, gravity oil removal jar is high/and diameter is than between 5:1~3:1, particle diameter accumulates in gravity oil removal jar surface greater than last oil slick and the dispersed oil of 10 μ m, the electronic oil skimmer vessel 4 that install gravity oil removal jar 12 upper ends will accumulate in the last oil slick and the dispersed oil on gravity oil removal jar surface and cast aside into oil trap 6, and the grease in the oil trap is from flowing in the gathering tank 7.Whether oil skimmer vessel starts by 5 controls of oil content detection instrument, when the oil content detection instrument detects the surface oil timesharing, starts oil skimmer vessel, and oil skimmer vessel can be adjusted rotating speed according to oil content with the speed running of 5~25m/min.Gravity oil trap bottom is installed vapour pipe thermal source is provided, and temperature is remained between 25~45 ℃, avoids oily condensation to solidify, when surpassing this temperature, and steam off source voluntarily.
Waste water behind gravity oil removal jar 12 flows into little air supporting skimming tank 9 through overflow weir 8, it is the bubble of 0.1~1mm that the gas release device of its bottom discharges particle diameter, in the bubble floating process, oil in water emulsion, dispersion wet goods float to fluid surface with bubble, then by oil skimmer vessel 11 skims in oil trap 6, oil skimmer vessel 11 is also by oil content detection instrument 5 control.Hydraulic detention time is 20~60min in the air flotation tank, and gas-water ratio is 80~200:1.
The water outlet of little air supporting skimming tank is from flowing into oil and water separation bygranulation jar 12; the oil and water separation bygranulation jar comprises level pipe 13 and vertical tube 15; vertical tube 15 is perpendicular to level pipe 13; level pipe 13 is positioned at the middle part of vertical tube 15; the level pipe water side is communicated with vertical tube 15 middle parts; waste water is introduced into level pipe 13; enter vertical tube 15 again; filled modified polypropylene acid amides filtrate 14 in the level pipe; compactedness is 60~85%, particle diameter of filter medium 1~10mm, dissolving oil in the level pipe; oil in water emulsion that part is not removed and dispersion wet goods are by the absorption of coarse filtrate; condense into oarse-grained oil film; enter vertical tube with water (flow) direction then; filled modified polypropylene 16 in the vertical tube, and compactedness is 45~70% in vertical tube, and modified polypropene is the net tubular; core diameter is 3~5cm in the net tube, and net tube outside diameter is 8~10cm.The horizontal flow velocity of waste water is 30~100m/h, and vertical flow velocity is 5~15m/h, and in the vertical tube, the grease of waste water partly floats, and last oil slick is cast aside in the oil trap 6 by oil skimmer vessel 21, and the waste water after the de-oiling flows into water treatment system from the bottom of vertical tube.
Described oil and water separation bygranulation operation is that small particle size grease in the kitchen waste water is carried out advanced treatment; in the coarse jar of built-in modified polyacrylamide filtrate; dissolving oil and oil in water emulsion particle diameter is less by the adsorption of filtrate are condensed into big particle diameter elaioleucite formation oil film; oil film come-up is discharged to the top, and water through the bottom water port to water treatment system.Described coarse filtrate--modified polyacrylamide filtrate has oleophylic, oil resistant, hydrophobic character, and the oil and water separation bygranulation jar is intake at level pipe, and water outlet direction and fuel-displaced direction are arranged in the vertical tube.
The oil-water separation that carries out with apparatus and method of the present invention is good, at the bottom of the cost, the grease of separating can be back to the chemical plant as the raw material of making biofuel, also can be used for making soap etc., the fat content of kitchen waste water is handled to reach national specified discharge standard simultaneously.
Description of drawings
Fig. 1 is an oily-water seperating equipment two dimensional structure synoptic diagram in the kitchen garbage, waste-water.
Embodiment
Set forth the application example of this device and method below in conjunction with accompanying drawing.Xining Qinghai Jieshen Environment Energy Industry Co.ltd has implemented 60m according to oil-water separation method principle in this kitchen garbage, waste-water 3The treatment unit of/d intermittent operation, fat content are 50000mg/l, by water pump be drawn into gravity oil removal jar ( 1m * 4m), upflow velocity is 4m/h, and the oil skimmer vessel rotating speed is 10m/min, and the water outlet grease concentration is 500mg/l; The water outlet of gravity oil removal jar enters little air supporting skimming tank through overflow weir, and (steam-water ratio is 100:1 for 2m * 2m * 1m), hydraulic detention time 30min, and the water outlet grease concentration is 50mg/l; The water outlet of little air supporting skimming tank enter the oil and water separation bygranulation jar (level pipe: 1m * 1m, vertical tube: The filling ratio of modified polyacrylamide is 60% in the 1m * 1m), the level pipe of oil and water separation bygranulation jar, filled modified polypropylene net tube (outside diameter is that 8cm, interior core diameter are 3cm) in the vertical tube, the water outlet of oil and water separation bygranulation jar grease concentration be below the 1mg/l.
Ton water treatment expense is 0.2 yuan, the recyclable 50 kilograms of greases of water per ton.

Claims (6)

1, oily-water seperating equipment in a kind of kitchen garbage, waste-water is characterized in that: device mainly is made up of line mixer (1), gravity oil removal jar (2), little air supporting skimming tank (9), oil and water separation bygranulation jar (12); Line mixer (1) and gravity oil removal jar (2) bottom is connected, and the inclination angle is housed is 40~60 ° waved plate (3) in gravity oil removal jar (2), and oil removal jar top is equipped with oil skimmer vessel (4), and whether it starts by oil content detection instrument (5) controls; Vapour pipe (17) is installed in gravity oil removal jar (2) bottom, and vapour pipe connects external steam source vapour generator (18), has temperature sensor in the gravity oil removal jar (2); Waste water in the gravity oil removal jar is by overflow weir (8) the air supporting skimming tank (9) in a subtle way that flows automatically, and little air supporting skimming tank top is equipped with oil skimmer vessel (11), and gas release device (10) is installed in the bottom; Oil and water separation bygranulation jar (12) comprises level pipe (13) and vertical tube (15); vertical tube (15) is perpendicular to level pipe (13); level pipe (13) is positioned at the middle part of vertical tube (15); the level pipe water side is communicated with vertical tube (15) middle part; waste water is introduced into level pipe (13); enter vertical tube (15) again; riser upper portions is equipped with oil skimmer vessel (21); little air supporting skimming tank (9) water outlet is from flowing in the level pipe (13) of oil and water separation bygranulation jar (12); filled modified polypropylene (16) in the filled modified polypropylene acid amides filtrate (14) in the level pipe (13), vertical tube (15).
2, oily-water seperating equipment in a kind of kitchen garbage, waste-water as claimed in claim 1 is characterized in that: whether the startup of oil skimmer vessel (4,11,21) is controlled by oil content detection instrument (5).
3, a kind of oil-water separation method of kitchen garbage, waste-water, it is characterized in that: kitchen garbage, waste-water enters gravity oil removal jar (2) by line mixer (1), waste water evenly rises along the inclination waved plate, upflow velocity is 5~15m/h, gravity oil removal jar is high/and diameter is than between 5:1~3:1, particle diameter accumulates in gravity oil removal jar surface greater than last oil slick and the dispersed oil of 10 μ m, the oil skimmer vessel that install gravity oil removal jar upper end casts aside the grease on described gravity oil removal jar surface into oil trap (6), and the grease in the oil trap is from flowing in the gathering tank (7); Whether oil skimmer vessel starts by oil content detection instrument (5) controls, when the oil content detection instrument detects the surface oil timesharing, start oil skimmer vessel, oil skimmer vessel is adjusted rotating speed with the speed running of 5~25m/min according to oil content, and gravity oil removal pot bottom is installed vapour pipe thermal source is provided, temperature is remained between 25~45 ℃, avoid oily condensation to solidify, when surpassing this temperature, steam off source voluntarily; Waste water behind gravity oil removal jar (2) flows into little air supporting skimming tank (9) through overflow weir (8); the gas release device of its bottom discharges bubble; in the bubble floating process; oil in water emulsion; dispersed oil floats to fluid surface with bubble; then by oil skimmer vessel (11) skim in oil trap (6); the water outlet of little air supporting skimming tank is from flowing in the level pipe (13) of oil and water separation bygranulation jar (12); oil and water separation bygranulation jar (12) comprises level pipe (13) and vertical tube (15); vertical tube (15) is perpendicular to level pipe (13); the level pipe water side is communicated with vertical tube (15) middle part; dissolving oil in the level pipe; oil in water emulsion and dispersed oil that part is not removed adsorb by filtrate; condense into oarse-grained oil film; enter vertical tube with water (flow) direction then; in the vertical tube; the grease of waste water partly floats; last oil slick is cast aside in the oil trap (6) by oil skimmer vessel (21), and the waste water after the de-oiling flows into water treatment system from the bottom of vertical tube.
4, hydraulic detention time is 20~60min in a kind of oil-water separation method of kitchen garbage, waste-water as claimed in claim 3, wherein said little air supporting skimming tank, and gas-water ratio is 80~200:1, and the bubble diameter that the gas release device discharges is 0.1~1mm.
5, a kind of oil-water separation method of kitchen garbage, waste-water as claimed in claim 3; wherein the compactedness of modified polyacrylamide is 60~85% in the level pipe of oil and water separation bygranulation jar; particle diameter of filter medium 1~10mm; the compactedness of modified polypropene is 45~70% in the vertical tube; modified polypropene is the net tubular; core diameter is 3~5cm in the net tube, and net tube outside diameter is 8~10cm.
6, a kind of oil-water separation method of kitchen garbage, waste-water as claimed in claim 3, wherein waste water its horizontal flow velocity when the oil and water separation bygranulation jar is 30~100m/h, vertical flow velocity is 5~15m/h.
CNB2007103060108A 2007-12-28 2007-12-28 Integral separation device and method for kitchen garbage, waste-water and grease Active CN100500582C (en)

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Application Number Priority Date Filing Date Title
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CN100500582C true CN100500582C (en) 2009-06-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102679367A (en) * 2011-03-15 2012-09-19 福建安井食品股份有限公司 Processing method for comprehensively utilizing oily food residue and processing equipment thereof

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CN101664296B (en) * 2009-09-11 2012-01-25 李俊怡 Environmentally friendly tableware rinsing table
CN101838082B (en) * 2010-05-14 2012-05-30 武汉嘉源华环保科技发展有限公司 Catering oily wastewater treatment system
CN102249477B (en) * 2011-05-05 2013-01-09 郑州蓝德环保科技有限公司 Processing method for oil-water separation of kitchen garbage
CN102304548B (en) * 2011-06-15 2013-04-24 中国科学院广州能源研究所 Method and device for separating and recovering oil coupled with restaurant and kitchen garbage biogas fermentation
CN102949865B (en) * 2011-08-31 2015-10-14 北京昊海天际科技有限公司 The otherness bubble detaching device of grease
CN103373752A (en) * 2012-04-29 2013-10-30 张繁荣 Electronic-control high-efficiency oil-water separator
CN102849863B (en) * 2012-08-30 2014-02-05 苏州市德莱尔建材科技有限公司 Food waste separating apparatus
CN102864763B (en) * 2012-09-11 2014-11-12 中国石油化工股份有限公司 Gas dissolving type overflow oil recycling device based on weir type oil collector and method
CN103451013A (en) * 2013-09-25 2013-12-18 陕西合盛生物柴油技术开发有限公司 Pretreatment method of waste oils and fats
CN103601337A (en) * 2013-10-15 2014-02-26 常州思宇环保材料科技有限公司 Device for removing washing agent from restaurant wastewater
CN103509652A (en) * 2013-10-23 2014-01-15 杨解定 Device for extracting grease from kitchen waste
CN106430674A (en) * 2016-08-26 2017-02-22 南京国能环保工程有限公司 Multilevel interception-type filtering method
CN108314264A (en) * 2018-03-04 2018-07-24 李嘉顺 A kind of cost-efficiently sanitary wastewater processing method
CN108911348A (en) * 2018-09-26 2018-11-30 蔡小春 Oil-containing sewage treatment system
CN110369438A (en) * 2018-12-26 2019-10-25 田城德 A kind of kitchen garbage separation and recovery method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102679367A (en) * 2011-03-15 2012-09-19 福建安井食品股份有限公司 Processing method for comprehensively utilizing oily food residue and processing equipment thereof
CN102679367B (en) * 2011-03-15 2014-10-22 福建安井食品股份有限公司 Processing method for comprehensively utilizing oily food residue and processing equipment thereof

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