CN201545764U - Device for treating emulsion and oil-bearing wastewater made by steel cold rolling - Google Patents

Device for treating emulsion and oil-bearing wastewater made by steel cold rolling Download PDF

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Publication number
CN201545764U
CN201545764U CN2009202115108U CN200920211510U CN201545764U CN 201545764 U CN201545764 U CN 201545764U CN 2009202115108 U CN2009202115108 U CN 2009202115108U CN 200920211510 U CN200920211510 U CN 200920211510U CN 201545764 U CN201545764 U CN 201545764U
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tank
pipe
vortex mixing
water
mixing tank
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魏伟
刘必松
陈剑
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SUZHOU LUNQIN INDUSTRY DESIGN Co Ltd
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SUZHOU LUNQIN INDUSTRY DESIGN Co Ltd
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Abstract

The utility model relates to a wastewater treating device, particularly to a device for treating emulsion and oil-bearing wastewater made by steel cold rolling. The device comprises mainly a regulating reservoir unit, a lift pump, a pH regulating reservoir, a gas energy flocculation treating unit, a catalyzing and oxidizing device group, a cooling tower, a MBR treating unit and a suction pump which are all connected sequentially. The utility model solves the problems of current treating device as follows: emulsion and oil-bearing wastewater made by steel cold rolling can not be treated completely, the dross moisture content is high and the CODCr value exceeds the standard.

Description

Cold rolling oil-containing of iron and steel and emulsifying liquid waste water treatment unit
Technical field
The utility model relates to a kind of wastewater treatment equipment, particularly cold rolling oil-containing of iron and steel and emulsifying liquid waste water treatment unit.
Background technology
A large amount of oil-containing and emulsifying liquid waste water be can produce in the iron and steel cold rolled sheet engineering, a large amount of emulsions, mineral oil, tensio-active agent etc. wherein contained, the COD of this class waste water CrContain generally about 15000~25000mg/l, what have reaches 50000mg/l even higher, and some is that form with aromatic hydrocarbon and derivative thereof exists in the waste water, this class material biodegradability is poor, be the bigger a kind of waste water of intractability in the oily(waste)water system, the running cost of wastewater treatment is also higher, and the COD value of processed waste water generally also can only satisfy the requirement of the middle COD of country's " Iron And Steel Industry pollution discharge standard " less than 100mg/l.Along with all the more attention of country to the energy-conserving and environment-protective of enterprise, " Iron And Steel Industry pollution discharge standard " draft for deliberation has explicitly called for the COD value of existing iron and steel enterprise rolling effluent must be lower than 60mg/l, and the newly-built waste discharge COD of enterprise value must be lower than 30mg/l.
At present, the treatment process of oily(waste)water adopts air supporting demulsification technology and membrane filtration process to carry out pre-treatment usually, again by the COD in the biochemical treatment system degrading waste water Cr
Be usually used in air supporting in the oily(waste)water treatment process and mainly contain two kinds of cavitation air flotation and air-dissolving air-floats, cavitation air flotation and air-dissolving air-float all are to utilize bubble as carrier, in the bubble uphill process, with the water surface on grease in the waste water and the suspended substance band, by Oil scraper oil slick is scraped to the waste oil groove again, realized the purpose of oily water separation.
Cavitation air flotation (CAF) mainly is to utilize the diffusing gas of airflow pipe bottom and the high speed rotating of paddle wheel to form a vacuum zone, air on the liquid level goes to fill a vacuum by transport pipe, and by the impeller of high speed rotating air is cut into micro-bubble and discharge from air flotation pool bottom, and spiral rising air supporting is to pool surface, in the process that rises, combine with grease and suspended substance, emerging together becomes oil slick, by Oil scraper oil slick is scraped to the waste oil groove, thus the purpose of realization oily water separation.
Air-dissolving air-float (DAF) is a characteristic of utilizing air different solubility in water under different pressures, waste water to all or part of pending (or handling the back) pressurizes and aerating, feed again through in the oily(waste)water of breakdown of emulsion, under the normal pressure situation, discharge, forming a lot of tiny bubbles when air is separated out rises in air flotation pool, bubble can drive grease in the waste water and suspended substance and float together and become oil slick when rising, logical again Oil scraper is scraped oil slick to the waste oil groove, thereby realizes the purpose of oily water separation.
The membrane filtration process of handling the oily(waste)water of high density mainly is meant ultrafiltration technology, it is to adopt inorganic ceramic film that highly concentrated oil-bearing wastewater is filtered, under the certain pressure condition, make micromolecular water see through ultra-filtration membrane, and macromolecular grease is tackled by ultra-filtration membrane, thereby realizes the separation of profit.Enter into biological contact oxidation pond again through the waste water after the oily water separation,, make the COD in the waste water by the degraded of microorganism CrAfter further reducing, enter the settling tank precipitation again, the right receipts by strainer filtered, at last discharging.
The shortcoming that prior art exists is as follows:
1, cavitation air flotation and air-dissolving air-float all are in uphill process grease in the waste water and impurity to be held up come-up by bubble, the grease that in uphill process, runs into along with bubble and the increase of suspended substance, the combination that bubble and grease and suspended substance form is also increasing, the also corresponding increase of the weight of combination, when the gravity of combination surpasses the buoyancy of himself, combination will sink, and grease and suspended substance just fail to separate from waste water like this.And bubble just runs into it in uphill process grease and suspended substance hold up, and do not have the place of process, grease still to be present in suspended substance at bubble and can not get separating the effluent quality instability in the waste water.In addition, isolated oil slick of air-float technology and scum silica frost water ratio are higher, and the power consumption of airfloat equipment is also bigger.
2, adopt ultrafiltration technology to handle the oily(waste)water of high density, because oil dense in the waste water need be heated and breakdown of emulsion waste water, so ultra-filtration membrane supporter material is had relatively high expectations, generally select inorganic ceramic film for use, cost is very high; Because ultra-filtration membrane stops up easily, need often to clean, to clean once in general about 3 days, the price of clean-out system is also very high; Ultra-filtration membrane needs certain transmembrane pressure could be effectively with oily water separation, thus also need to be equipped with special recycle pump, so power consumption and noise are also bigger.
3, bio-contact oxidation+precipitation+filtration process is adopted in biochemical treatment, owing to have a large amount of aromatics in the grease, its biodegradability is poor, and microorganism can't effectively be degraded to it, causes water outlet COD CrValue exceeds standard.In addition, need special settling tank and strainer, floor space is big, and anti-shock loading is low, and it is bigger that effluent quality is influenced by the front pretreatment technology, the effluent quality instability.
The utility model content
The purpose of this utility model is to propose cold rolling oil-containing of a kind of iron and steel and emulsifying liquid waste water treatment unit, to solve the problems referred to above of using present device processing cold rolling oil-containing of iron and steel and emulsifying liquid waste water to exist.
The utility model solves the problems of the technologies described above by the following technical programs.
Cold rolling oil-containing of iron and steel and emulsifying liquid waste water treatment unit comprise:
The equalizing tank unit;
Lift pump passes through first pipe connection between the water-in of described lift pump and the described equalizing tank unit;
The pH regulator pool unit passes through second pipe connection between described pH regulator pool unit and the described lift pump;
Gas energy flocculation treatment unit passes through the 3rd pipe connection between described gas energy flocculation treatment unit and the described pH regulator pool unit;
The catalytic oxidizing equipment group, described catalytic oxidizing equipment group is made up of the catalytic oxidizing equipment of suitable number of stages, first step catalytic oxidizing equipment and described gas can pass through the 4th pipe connection in the flocculation treatment unit, described the 4th pipeline is provided with the 4th pipe-line control valves, by pipe connection, described pipeline is provided with control valve between next stage catalytic oxidizing equipment and the last catalytic oxidizing equipment;
Cooling tower, by the 5th pipe connection, described the 5th pipeline is provided with the 5th pipe-line control valves between described cooling tower and the last step catalytic oxidizing equipment;
The MBR processing unit passes through the 6th pipe connection between described MBR processing unit and the described cooling tower;
Suction pump, by the 7th pipe connection, the water outlet of described suction pump connects rising pipe between the water-in of described suction pump and the described MBR processing unit.
Compared with prior art, the utlity model has following advantage:
1, cold rolling oil-containing of iron and steel of the present utility model and emulsifying liquid waste water treatment unit can be used for the processing of cold rolling oil-containing of iron and steel and emulsifying liquid waste water, and may extend to the similar oil-containing of oil, petrochemical industry, coking, automobile and other industries and the processing of emulsifying liquid waste water.
2, adopt gas to carry out oily water separation in the flocculation treatment unit, working cost is low, and the oil slick of generation and scum silica frost water ratio are low, have the ability of come-up voluntarily; The gas energy flocculation treatment unit generation flco that adopts is closely knit and have the very strong automatic i of going up, and oil slick or scum silica frost water ratio are low, and the content of oil and suspended substance is all less in the water outlet, stable effluent quality.
4, the utility model adopts " gas energy flocculation treatment unit+catalytic oxidizing equipment group+MBR processing unit " to handle highly concentrated oil-bearing wastewater, stable effluent quality, and COD can reduce to below the 30mg/l, and water outlet can be used as the former water or the make up water of reuse water.Catalytic oxidizing equipment can not have selectively the organic pollutant open loop chain rupture of high-concentration hardly-degradable under normal temperature and pressure conditions, is oxidized to simple organism, CO 2And H 2O, anti-shock loading is strong, but can in the waste water can not or the organism of difficult for biological degradation become and easily made it change biochemical substances into by biological degradation, thereby guarantee final outflow water COD CrValue stabilization is up to standard, and operation and maintenance cost is lower.
Equalizing tank of the present utility model unit is used for homogeneous and all measures the oil of regulating and tentatively removing cold rolling oil-containing of iron and steel and emulsifying liquid waste water, and the equalizing tank unit comprises:
First equalizing tank;
Steam heater, described steam heater are arranged on the described first equalizing tank inside, are provided with around the described first equalizing tank inwall;
Article one, to the steam conveying pipe of described steam heater delivering vapor, one of described steam conveying pipe is connected with the import of described steam heater, and the other end of described steam conveying pipe is connected with the steam feedway;
, a water of condensation conduit, of described water of condensation conduit is connected with the outlet of described steam heater, and the other end of described water of condensation conduit is connected to the wastewater collection melt pit;
The frizing slag scraper, described frizing slag scraper is positioned at the top of described first equalizing tank.
Gas described in the utility model can comprise the flocculation treatment unit:
Three-phase vortex mixing tank group, described three-phase vortex mixing tank group is in series by some transport pipes by several three-phase vortex mixing tanks, the water-in of every transport pipe connects the bottom water outlet of a last three-phase vortex mixing tank, the water outlet of every transport pipe connects the lateral water-in of next three-phase vortex mixing tank, the lateral water-in of described first three-phase vortex mixing tank of described the 3rd pipe connection;
Force (forcing) pump, described force (forcing) pump are arranged on described the 3rd pipeline;
Carry the flocculation agent transport pipes of flocculation agent to described three-phase vortex mixing tank group for some, one of described the 3rd pipeline, described transport pipe and described flocculation agent transport pipe is connected;
Several flocculant concentration devices, the other end of described flocculation agent transport pipe is connected with described flocculant concentration device;
Carry the airflow pipes of air to described three-phase vortex mixing tank group for some, one of the inlet mouth at described three-phase vortex mixing tank top and described airflow pipe is connected;
Several high-pressure air feedwaies, the other end of described airflow pipe is connected with described high pressure gas feedway;
Reactive tank, described reactive tank are uncovered cell body, are provided with dividing plate in described reactive tank, and described dividing plate connects the diapire sidewall relative with two of described reactive tank; The height of described dividing plate is lower than the height of the sidewall of described reactive tank; Described dividing plate is divided into first cavity and second cavity with the inner chamber of described reactive tank, and described first cavity is the explosion chamber; Be connected by connecting tube between last three-phase vortex mixing tank of described explosion chamber and described three-phase vortex mixing tank group, the water-in of described connecting tube connects the water outlet of described last three-phase vortex mixing tank bottom, described connecting tube stretches into described explosion chamber, and the water outlet of described connecting tube is positioned at the bottom in described explosion chamber;
With the slag scraper that the scum silica frost in the described reactive tank strikes off, described slag scraper is positioned at the groove top of described reactive tank;
The scum silica frost that contains the scum silica frost that described slag scraper strikes off contains device, described scum silica frost contain device be positioned at described slag scraper slag notch below;
Collect the header of emission purification waste water, the sidewall bottom of described reactive tank has header through hole is installed, and one of described header is arranged in the described reactive tank, and the other end is passed described header installation through hole and connected described the 4th pipeline.
In the gas energy flocculation treatment described in the utility model unit, described high-pressure air feedway is an air compressor machine, and described header is a perforated pipe, and described slag scraper is a slag scraper, and it is sludge bucket that described scum silica frost contains device.
In the gas energy flocculation treatment described in the utility model unit, the quantity of described three-phase vortex mixing tank is three to six, the quantity of described transport pipe is lacked one than the quantity of described three-phase vortex mixing tank, and the quantity of described flocculation agent transport pipe, described flocculant concentration device, described airflow pipe, described high-pressure air feedway is identical with the quantity of described three-phase vortex mixing tank.
Gas of the present utility model can have the following advantages the flocculation treatment unit:
The molecular chain micelle state of the flocculation agent that 1, adds usually, three-phase vortex mixing tank group can effectively stretch the flocculating agent molecule chain, the flocculating agent molecule chain is drawn into the long chain molecule shape, the electric charge that originally is coiled in the flocculating agent molecule is fully used, and the contaminant trap ability of flocculation agent improves tens of times.In addition, gas can flocculation apparatus provide the mixing functions of flocculation agent cmpletely by eddy current, and the efficient that pollutent is caught by the flocculating agent molecule chain is near 100%, thereby realizes handling a large amount of oily(waste)waters with few flocculation agent consumption;
2, the eddy current capacity control function of three-phase vortex mixing tank uniqueness guarantees that gas can adapt to different water inlet situations in the flocculation treatment unit, can adapt to rapidly when oily(waste)water character, temperature and flow are undergone mutation also and can adjust operating mode immediately, guarantees to stablize water outlet.
3, gas can flocculation treatment during cell operation, gas, solid, liquid three-phase are mixed, the perfect pressure regulating system that can reduce pressure gradually and form by the three-phase vortex mixing tank, can make bubble result from nucleus and form state, realization approaches zero minimum bubble diameter, and be grown directly upon in the floc particle, need not attaching process.This technology has realized the innovation of flco come-up, has omitted the bubble attaching process of molten wetting system, circulating water system and slow poor efficiency, realizes unprecedented scum silica frost removal efficient and system simplification, saves floor space.
4, since flocculation agent, pollutent, air in the eddy current reaction process, in conjunction with closely, water ratio is low, after come-up formed scum silica frost, the scum silica frost water ratio was about 80%, is convenient to storage and mummification.
Described catalytic oxidizing equipment described in the utility model comprises:
Reaction tank;
Feed compressed-air actuated aerating apparatus to described reaction tank, described aerating apparatus comprises air feeder and aeration tube, and described aeration tube is connected with described air feeder, and the aeration tube of described aerating apparatus is arranged in the described reaction tank;
Some titanium battery lead plates, described titanium battery lead plate are divided into anodal titanium battery lead plate and negative pole titanium battery lead plate, and described anodal titanium battery lead plate and negative pole titanium battery lead plate are alternately arranged, and described titanium battery lead plate vertically is arranged in the described reaction tank;
Solid catalyst, described solid catalyst are filled between the described titanium battery lead plate;
Recycle pump, the water-in of described recycle pump is connected by first circulating line with the water outlet of described reaction tank, described first circulating line is provided with the first circulating line control valve, the water outlet of described recycle pump is connected by second circulating line with the circulation fluid import of described reaction tank, and described second circulating line is provided with the second circulating line control valve.
Catalytic oxidizing equipment in the described catalytic oxidizing equipment group is the 2-4 level, and the air feeder in the described catalytic oxidizing equipment is an air compressor machine.
Catalytic oxidizing equipment of the present utility model can move at normal temperatures and pressures, can not have selectively particularly open loop such as phenol and the naphthenic acid chain rupture of the organic pollutant of high-concentration hardly-degradable, is oxidized to simple organism, CO 2And H 2O can not produce secondary pollution.(solid composite catalyst is gac to be placed in the solution such as containing Silver Nitrate or copper sulfate soak to catalytic oxidizing equipment by adopting the titanium base composite electric utmost point and solid composite catalyst, dry after the taking-up, carrying out roasting again forms), can produce various free radicals such as great amount of hydroxy group free radical (OH) and various active O fast, the oxidizing electrode current potential that OH is high, the high cloud density point of attack organic molecule easily.Free radical is very active, and can not or be difficult to by biodegradable organic pollutant chain reaction fast to be taken place, and does not have selectively the organic pollutant open loop chain rupture of high-concentration hardly-degradable, is oxidized to simple organism, CO 2And H 2O, thus in the waste water can not or the organism of difficult for biological degradation become easily by biological degradation, realized the organic purpose of difficult for biological degradation in the degrading waste water, be biochemical treat effluent COD CrQualified discharge provides the reliable technique assurance.
MBR processing unit described in the utility model comprises:
Biochemistry pool, described biochemistry pool of described the 6th pipe connection and described cooling tower,
A series of membrane materials are the membrane module that the microfiltration membrane of PTFE is formed, and described membrane module is arranged in the described biochemistry pool.
Described membrane module of described the 7th pipe connection and described suction pump.
Described MBR processing unit also comprises the aerating apparatus that is used for the film surface of described membrane bioreactor is shaken cleaning, and described aerating apparatus comprises:
Gas blower,
Aeration tube, one of described aeration tube air outlet that connects described gas blower, the part that described aeration tube has a solarization air cap be positioned at described membrane bioreactor membrane module below.
It (is PTFE film material that membrane bioreactor of the present utility model adopts the PTFE film, coating on the beta glass fibre fabric does not have the PTFE of chemical reactivity resin to make, the main raw of coating should be teflon resin), utilize the good chemically-resistant medicament of PTFE film, acidproof, alkaline-resisting and organic solvent properties, extremely strong oil-proofness, avoided the shortcoming of organic membrane anti-fouling performance poor (particularly oil pollution).The utility model utilizes PTFE film favorable mechanical performance, makes MBR film silk have high percentage of open area and toughness, compares polysulfones and pvdf membrane, has higher membrane flux, not cracky fracture, long service life, and prolonged the film cleaning interval, simple to operate, easy to maintenance.
Adopt the cold rolling oily(waste)water of MBR processing unit processes of the present utility model, water outlet COD can be stabilized in about 60, suspended substance≤5mg/L, and oil≤2mg/L, but the water outlet direct reuse reduces the new water consumption of enterprise in production.
Description of drawings
Fig. 1 is that the gas described in the embodiment can the unitary synoptic diagram of flocculation treatment.
Fig. 2 is the synoptic diagram of the catalytic oxidizing equipment described in the embodiment.
Fig. 3 is the synoptic diagram of cold rolling oil-containing of iron and steel of the present utility model and emulsifying liquid waste water treatment unit.
Embodiment
Further specify the technical solution of the utility model below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1.Gas of the present utility model can the flocculation treatment unit, mainly by force (forcing) pump 1, three-phase vortex mixing tank group, some flocculation agent transport pipes, some airflow pipes, reactive tank, connecting tube 121, slag scraper 5, scum silica frost contain device 6, header 7 is formed.
Three-phase vortex mixing tank group is in series by some transport pipes by several three-phase vortex mixing tanks, and the number of three-phase vortex mixing tank is determined on a case-by-case basis, and is generally 3-6.In this embodiment, three-phase vortex mixing tank group is in series by three transport pipes by four three-phase vortex mixing tanks, is respectively the first three-phase vortex mixing tank 21, the second three-phase vortex mixing tank 22, the 3rd three-phase vortex mixing tank 23, the 4th three-phase vortex mixing tank 24, first transport pipe 91, second transport pipe 92, the 3rd transport pipe 93.The water-in of first transport pipe 91 connects the water outlet of the bottom of the first three-phase vortex mixing tank 21, and the water outlet of first transport pipe 91 connects the lateral water-in of the second three-phase vortex mixing tank 22.The water-in of second transport pipe 92 connects the water outlet of the bottom of the second three-phase vortex mixing tank 22, and the water outlet of second transport pipe 92 connects the lateral water-in of the 3rd three-phase vortex mixing tank 23.The water-in of the 3rd transport pipe 93 connects the water outlet of the bottom of the 3rd three-phase vortex mixing tank 23, and the water outlet of the 3rd transport pipe 93 connects the lateral water-in of the 4th three-phase vortex mixing tank 24.The three-phase vortex mixing tank also claims eddy current three-phase mixing tank, and English abbreviates LSGM as.
Carry oily(waste)water in the 3rd pipeline 023 first three-phase vortex mixing tank in three-phase vortex mixing tank group.In this embodiment, be in the first three-phase vortex mixing tank 21, to carry oily(waste)water, the lateral water-in of second pipe connection, the first three-phase vortex mixing tank 21.
On the 3rd pipeline 023, be provided with force (forcing) pump 1.
The flocculation agent transport pipe is carried flocculation agent to three-phase vortex mixing tank group, and flocculation agent transport pipe number is identical with the number of three-phase vortex mixing tank.In this embodiment, being provided with four flocculation agent transport pipes, is respectively the first flocculation agent transport pipe 101, the second flocculation agent transport pipe 102, the 3rd flocculation agent transport pipe 103, the 4th flocculation agent transport pipe 104.One of the first flocculation agent transport pipe 101 is connected with second pipeline 022, one of the second flocculation agent transport pipe 102 is connected with first transport pipe 91, one of the 3rd flocculation agent transport pipe 103 is connected with second transport pipe 92, and of the 4th flocculation agent transport pipe 104 is connected with the 3rd transport pipe 93.The other end of every flocculation agent transport pipe all is connected with flocculant concentration device (not shown).The flocculant concentration device can adopt existing medicament throwing device.
Airflow pipe is carried air to three-phase vortex mixing tank group, and the number of airflow pipe is identical with the number of three-phase vortex mixing tank.In this embodiment, being provided with four airflow pipes, is respectively first airflow pipe 111, second airflow pipe 112, the 3rd airflow pipe 113, the 4th airflow pipe 114.Inlet mouth with the first three-phase vortex mixing tank, 21 tops of first airflow pipe 111 is connected, inlet mouth with the second three-phase vortex mixing tank, 22 tops of second airflow pipe 112 is connected, inlet mouth with the 3rd three-phase vortex mixing tank top 23 of the 3rd airflow pipe 113 is connected, and an inlet mouth with the 4th three-phase vortex mixing tank 24 tops of the 4th airflow pipe 114 is connected.The other end of every airflow pipe all is connected with the air compressor machine (not shown).
Reactive tank, reactive tank is uncovered cell body, is provided with dividing plate 13 in reactive tank, the diapire sidewall relative with two of dividing plate 13 ligation grooves; The inner chamber of reactive tank is divided into first cavity 3 with dividing plate 13 and second cavity, 4, the first cavitys 3 are explosion chamber 3; The height of dividing plate 13 is lower than the height of the sidewall of reactive tank, like this scum silica frost and purify liquid waste and can be from the explosion chamber 3 arrive second cavity 4; The effect of dividing plate 13 is to prevent that explosion from exerting an influence to the collection and the discharging of purifying waste water.Be connected by connecting tube 121 between last three-phase vortex mixing tank of explosion chamber 3 and three-phase vortex mixing tank group, in this embodiment, last three-phase vortex mixing tank is the 4th three-phase vortex mixing tank 24.The water-in of connecting tube 121 connects the water outlet of the 4th three-phase vortex mixing tank 24 bottoms, and connecting tube 121 stretches into explosion chamber 3, and the water outlet of connecting tube 121 is positioned at the bottom in explosion chamber 3.
Slag scraper 5 is used for the scum silica frost of reactive tank is struck off.Slag scraper 5 is positioned at the groove top of reactive tank.Slag scraper 5 in this embodiment is common slag scrapers.
Scum silica frost contains device 6 and is used to contain scum silica frost that slag scraper strikes off, scum silica frost contain device 6 be positioned at slag scraper 5 slag notch below.It is sludge buckets that scum silica frost in this embodiment contains device 6.
Header 7 is the pipelines that are used to collect emission purification waste water, has header in the sidewall bottom of second cavity 4 of reactive tank through hole is installed, and one of header 7 is arranged in the described reactive tank, and the other end is passed described header through hole is installed.Header in this embodiment adopts perforated pipe, presses hole, the 150mm spaced 5mm left and right sides on the section of tubing of perforated pipe in second cavity 4.
The method of utilizing gas energy flocculation reactor of the present utility model to handle oily(waste)water is as follows.
PH value with oily(waste)water is adjusted to about 6 earlier.To contain waste water by force (forcing) pump 1 and deliver to three-phase vortex mixing tank group, flocculation agent and pressurized air add to three-phase vortex mixing tank group by flocculation agent transport pipe, airflow pipe respectively, form eddy current by three-phase vortex mixing tank side direction aperture, make oily(waste)water, flocculation agent, air thorough mixing, flocculant concentration point and air operational throughput can be according to the oily(waste)water water quality regulation.
After a series of eddy current mix, flocculation agent long-chain matrix and pollutants in waste water (suspended substance, wet goods), micro-bubble are combined closely, the vortex mixer water outlet discharges in 3 explosions of reactive tank explosion chamber, flocculation agent, pollutent rise to the groove top rapidly with microbubble, form scum silica frost, by groove top slag scraper 5 skims, purify liquid waste and collect discharging by header 7.
In the three-phase vortex mixing tank, the pollutent flco that the air of solubilised state forms under the effect of flocculation agent by pollutent forms countless superfine bubbles gradually, is grown directly upon among the pollutent flco; In pollutent flco floating-upward process, tiny pollutent flco merges rapidly grows up, and bubble also sharply expands simultaneously, ties up the space of pollutent flco inside clearance water, pollutent flco water ratio and proportion are further reduced, and the pollutent flco is solid and have a very strong i of going up voluntarily; Finally float over the pond face and form scum silica frost, scum silica frost concentrates at Chi Mianshang, piles up mutually, is bonded to the scum silica frost blanket, forms whole come-up, and water ratio further reduces.
Preferable implementation method is, with the hole number of overregulating the three-phase vortex internal mixer, air pressure in the first three-phase vortex mixing tank, the second three-phase vortex mixing tank, the 3rd three-phase vortex mixing tank, the 4th three-phase vortex mixing tank is reduced successively, from 0.7-0.8MPa to 0.1MPa (standard atmospheric pressure), step-down step by step, underwater bubble is grown up gradually, and the moisture in the extruding flco reduces moisture percentage in sewage sludge.
Referring to Fig. 2, catalytic oxidizing equipment comprises that reaction tank 0601, aerating apparatus, titanium battery lead plate 0603, solid catalyst 0604, recycle pump 0605, first circulating line 0606, the first circulating line control valve 0607, second circulating line 0608, second follow pipe-line control valves 0609.Aerating apparatus comprises air compressor machine (not shown) and aeration tube 0602, and aerating apparatus feeds pressurized air with supplemental oxygen to reaction tank 0601, and the aeration tube 0602 of aerating apparatus is preferably disposed at the bottom of the pond of described reaction tank.Titanium battery lead plate 0603 is divided into anodal titanium battery lead plate and negative pole titanium battery lead plate, and anodal titanium battery lead plate and negative pole titanium battery lead plate are alternately arranged, and anodal, negative pole titanium battery lead plate vertically is arranged in the reaction tank 0601, is positioned at the top of the aeration tube 0602 of aerating apparatus; Solid catalyst 0604 is filled between the titanium battery lead plate 0603.The water-in of recycle pump 0605 is connected by first circulating line 0606 with the water outlet of reaction tank 0601, first circulating line 0606 is provided with the first circulating line control valve 0607, the water outlet of recycle pump 0605 is connected 0608, the second circulating line 0608 with the circulation fluid import of reaction tank 0601 by second circulating line and is provided with the second circulating line control valve 0609.
Referring to Fig. 3, cold rolling oil-containing of iron and steel of the present utility model and emulsifying liquid waste water treatment unit mainly are made up of equalizing tank unit 01, lift pump 03, pH regulator pond 04, gas energy flocculation treatment unit 05, catalytic oxidizing equipment group 06, cooling tower 07, MBR processing unit 08, suction pump 09 and associated conduit, control valve etc.
Equalizing tank unit 01 mainly is made up of first equalizing tank 011, steam heater 012, steam conveying pipe 013, water of condensation conduit 014, Oil and slag scraping machine 015.Steam heater 012 is a steam heating coil 012, and steam heating coil is arranged on first equalizing tank, 011 inside, is provided with around first equalizing tank, 011 inwall; Steam conveying pipe 013 is to steam heating coil 012 delivering vapor, and 013 1 imports with steam heating coil 012 of steam conveying pipe are connected, and the other end of steam conveying pipe is connected with steam feedway (not shown).Outlet with steam heating coil 012 of water of condensation conduit 014 is connected, and the other end of water of condensation conduit 014 is connected to wastewater collection melt pit (not shown).Oil and slag scraping machine 015 places the top of first equalizing tank 011.Cold rolling oil-containing of iron and steel and emulsifying liquid waste water enter first equalizing tank 011 of equalizing tank unit 01 from pipeline 019.
Equalizing tank 01 is except all measuring the adjusting to oil-containing and emulsifying liquid waste water homogeneous, also be provided with steam heater 012, by steam heating (40~50 ℃) oil-containing and emulsifying liquid waste water are carried out breakdown of emulsion, the waste oil come-up, Oil and slag scraping machine by equalizing tank 01 top 015 scrapes oil slick again, and the oil slick that scrapes is recycled after collecting by dirty oil tank.
Be connected by first pipeline 021 between the water-in of lift pump 03 and the equalizing tank 01; Be connected by second pipeline 022 between pH regulator pond 04 and the lift pump 03.PH regulator pool unit 04 comprises stirrer 041 and medicament adding set (not shown), and stirrer 041 is installed in the pH regulator pond.Control valve can be equipped with protection lift pump 03 in lift pump 03 front and back, and this is the customary means in this field, does not give unnecessary details at this.
Gas can flocculation treatment be connected by the 3rd pipeline 023 between unit 05 and the pH regulator pond 04.Control valve can be installed with protection force (forcing) pump 1 in the front and back of the force (forcing) pump 1 of gas energy flocculation treatment unit 05, and this is the customary means in this field, does not give unnecessary details at this.Catalytic oxidizing equipment group 06 can be made up of 2-4 level catalytic oxidizing equipment, catalytic oxidizing equipment group 06 is made up of the two-stage catalytic oxidizing equipment among the present invention, first step catalytic oxidizing equipment 061 and gas can the flocculation treatment unit 05 be connected by the 4th pipeline 024, the 4th pipeline 024 is provided with the 4th pipe-line control valves 0241, be connected by pipeline 063 between second stage catalytic oxidizing equipment 062 and the first step catalytic oxidizing equipment 061,063 is provided with control valve 0631 on the pipeline.Be connected by the 5th pipeline 025 between cooling tower 07 and the second stage catalytic oxidizing equipment 062, the 5th pipeline 025 is provided with control valve 0251.Be connected by the 6th pipeline 026 between MBR processing unit 08 and the cooling tower 07.Referring to Fig. 2 Fig. 3 that holds concurrently, when the reaction tank 0601 of first step catalytic oxidizing equipment 061 is intake, the 4th pipe-line control valves 0241 is opened, and the first circulating line control valve 0607, the second circulating line control valve 0609 and the control valve 0631 of first step catalytic oxidizing equipment 061 are all closed.Behind reaction tank 0601 water inlet end of first step catalytic oxidizing equipment 061, close the 4th pipe-line control valves 0241, open the first circulating line control valve 0607 and the second circulating line control valve 0609 of first step catalytic oxidizing equipment 061, ON cycle pump 0605, waste water is through reaction tank 0601 internal recycle of recycle pump 0605 at first step catalytic oxidizing equipment 061.After catalytic oxidation finishes, close the second circulating line control valve 0609 of first step catalytic oxidizing equipment 061, opening controlling valve 0631 again, the waste water in the reaction tank 0601 of first step catalytic oxidizing equipment 061 is delivered to the reaction tank 0601 of second stage catalytic oxidizing equipment 062.
When the reaction tank 0601 of second stage catalytic oxidizing equipment 062 was intake, control valve 0631 was opened, and the first circulating line control valve 0607, the second circulating line control valve 0609 and the 5th pipe-line control valves 0251 of second stage catalytic oxidizing equipment 062 are all closed.Behind reaction tank 0601 water inlet end of second stage catalytic oxidizing equipment 062, closed control valve 0631, open the first circulating line control valve 0607 and the second circulating line control valve 0609 of second stage catalytic oxidizing equipment 062, ON cycle pump 0605, waste water is through reaction tank 0601 internal recycle of recycle pump 0605 at second stage catalytic oxidizing equipment 062.After catalytic oxidation finishes, close the second circulating line control valve 0609 of second stage catalytic oxidizing equipment 062, open the 5th pipe-line control valves 0251 again, the waste water in the reaction tank 0601 of second stage catalytic oxidizing equipment 062 is delivered to delivers to cooling tower 07 and handle.
MBR processing unit 08 comprises biochemistry pool 081, membrane module 082, aerating apparatus.The 6th pipeline 026 connects biochemistry pool 081 and cooling tower 07, the seven pipeline, 027 junctional membrane assembly 082 and suction pump 09; Membrane module is that the microfiltration membrane of PTFE is formed by a series of membrane materials, and membrane module 082 is arranged in the biochemistry pool 081.The MBR processing unit also comprises the aerating apparatus that is used for the film surface of membrane module 082 is shaken cleaning.Aerating apparatus is made up of gas blower (not shown) and aeration tube 083, the air outlet of a connection gas blower of aeration tube 083, the part that aeration tube has a solarization air cap be positioned at membrane module 082 membrane module below.
What the film of the membrane module that uses in this embodiment adopted is PTFE organic hollow tunica fibrosa.Be connected by the 7th pipeline 027 between the membrane module 082 of the water-in of suction pump 09 and MBR processing unit 08, the water outlet of suction pump 09 connects rising pipe.
Cold rolling oil-containing of the iron and steel of this embodiment and emulsifying liquid waste water treatment unit, in use, highly concentrated oil-bearing wastewater is after the 01 preliminary oil removing of equalizing tank unit, deliver to pH regulator pond 04 by lift pump 03, the pH regulator value is about 6, force (forcing) pump 1 by gas energy flocculation treatment unit 05 is transported to gas energy flocculation treatment unit 05 again, remove most of oil and suspended substance in the waste water, entering catalytic oxidizing equipment group 06 then handles, the catalytic oxidizing equipment water outlet enters cooling tower 07 again and is cooled to about 35 ℃, finally passes through 08 back reuse or the discharging of MBR processing unit.
Gas can flocculation treatment unit 05 be the fully automatic integral suite of equipment, by special three-phase mixing tank, pressurized air is injected waste water, form eddy current, again with the direct mixed dissolution of PAM in waste water, thereby the stretching of finishing the PAM molecule is rapidly proposed the capture of effect, flocculation stirring, pollutent and is formed flco, discharge the chamber through explosion again and form bubble nucleus and ultralight hollow flco, flco is closely knit and have a very strong i of going up automatically, the scum silica frost water ratio is low, water outlet oil and suspended substance are few, satisfy follow-up water inlet requirement.
But catalytic oxidizing equipment group 06 comprises the catalytic oxidizing equipment of two-stage independent operating, between anodic-cathodic, form electromagnetic field by controllable direct current power supply, and form polynary pole effect by the solid catalyst of filling between pole plate, under the synergy of air, catalyzer, generate great amount of hydroxy group free radical (OH), aliphatic carbon chain in the waste water can be oxidized to alcohol, aldehyde, acid, last decarboxylation generates CO 2For aromatics, (OH) at first with the phenyl ring hydroxylation, then with O 2Effect generates the peroxylradicals on the phenyl ring, and then open loop generates fatty compounds, and along with the intensification of degree of oxidation, carbochain progressively ruptures, and progressively is converted into simple organism, CO 2And H 2O, the BOD/COD value of waste water also significantly improves, and biodegradability also strengthens greatly.
Enter the MBR processing unit through the waste water after the processing of two-stage catalytic oxidizing equipment, the active sludge thorough mixing in the biochemistry pool of waste water and MBR processing unit is by the degraded of microorganism, COD CrCan reduce to below the 30mg/L, by the crown_interception of film, the waste water after the processing sees through film silk micropore again, and through suction pump 09 discharging or reuse, active sludge is trapped within the biochemistry pool, makes biochemistry pool can keep higher activated sludge concentration.
What the MBR processing unit in the utility model adopted is PTFE organic hollow tunica fibrosa, is organic built-in membrane bioreactor.In the operational process, the bubble that membrane module 082 bottom aeration tube produces shakes cleaning to the film silk, avoids mud to pollute at the long-term formation of deposits film in film surface.The mode of intermittent operation is taked in suction pump 09, when suction pump 09 is stopped transport, and the pressure release suddenly of film surface, the mud that is adsorbed on the film surface obtains fast effectively cleaning under aeration concussion effect.Organic built-in membrane bioreactor utilizes membrane separation plant that active sludge in the biochemical reaction tank and larger molecular organics matter are held back, and saves second pond and strainer, and floor space is less.Activated sludge concentration also so greatly improves, hydraulic detention time (HRT) and sludge retention time (SRT) can be controlled respectively, and the material of difficult degradation is constantly reacted in reactor and is degraded, and final outflow water COD can reduce to below the 30mg/l, can be used as the former water or the make up water of reuse water.
Those of ordinary skill in the art will be appreciated that, above embodiment only is to be used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.

Claims (10)

1. cold rolling oil-containing of iron and steel and emulsifying liquid waste water treatment unit is characterized in that, comprising:
The equalizing tank unit;
Lift pump passes through first pipe connection between the water-in of described lift pump and the described equalizing tank unit;
The pH regulator pool unit passes through second pipe connection between described pH regulator pool unit and the described lift pump;
Gas energy flocculation treatment unit passes through the 3rd pipe connection between described gas energy flocculation treatment unit and the described pH regulator pool unit;
The catalytic oxidizing equipment group, described catalytic oxidizing equipment group is made up of the catalytic oxidizing equipment of suitable number of stages, first step catalytic oxidizing equipment and described gas can pass through the 4th pipe connection in the flocculation treatment unit, described the 4th pipeline is provided with the 4th pipe-line control valves, by pipe connection, described pipeline is provided with control valve between next stage catalytic oxidizing equipment and the last catalytic oxidizing equipment;
Cooling tower, by the 5th pipe connection, described the 5th pipeline is provided with the 5th pipe-line control valves between described cooling tower and the last step catalytic oxidizing equipment;
The MBR processing unit passes through the 6th pipe connection between described MBR processing unit and the described cooling tower;
Suction pump, by the 7th pipe connection, the water outlet of described suction pump connects rising pipe between the water-in of described suction pump and the described MBR processing unit.
2. cold rolling oil-containing of iron and steel according to claim 1 and emulsifying liquid waste water treatment unit is characterized in that, described equalizing tank unit comprises:
First equalizing tank;
Steam heater, described steam heater are arranged on the described first equalizing tank inside, are provided with around the described first equalizing tank inwall;
Article one, to the steam conveying pipe of described steam heater delivering vapor, one of described steam conveying pipe is connected with the import of described steam heater, and the other end of described steam conveying pipe is connected with the steam feedway;
, a water of condensation conduit, of described water of condensation conduit is connected with the outlet of described steam heater, and the other end of described water of condensation conduit is connected to the wastewater collection melt pit;
The frizing slag scraper, described frizing slag scraper is positioned at the top of described first equalizing tank.
3. cold rolling oil-containing of iron and steel according to claim 1 and emulsifying liquid waste water treatment unit is characterized in that: described steam heater is the steam-heated cal(l)andria coil pipe, and described frizing slag scraper is an Oil and slag scraping machine.
4. cold rolling oil-containing of iron and steel according to claim 1 and emulsifying liquid waste water treatment unit is characterized in that, described gas can comprise the flocculation treatment unit:
Three-phase vortex mixing tank group, described three-phase vortex mixing tank group is in series by some transport pipes by several three-phase vortex mixing tanks, the water-in of every transport pipe connects the bottom water outlet of a last three-phase vortex mixing tank, the water outlet of every transport pipe connects the lateral water-in of next three-phase vortex mixing tank, the lateral water-in of described first three-phase vortex mixing tank of described the 3rd pipe connection;
Force (forcing) pump, described force (forcing) pump are arranged on described the 3rd pipeline;
Carry the flocculation agent transport pipes of flocculation agent to described three-phase vortex mixing tank group for some, one of described the 3rd pipeline, described transport pipe and described flocculation agent transport pipe is connected;
Several flocculant concentration devices, the other end of described flocculation agent transport pipe is connected with described flocculant concentration device;
Carry the airflow pipes of air to described three-phase vortex mixing tank group for some, one of the inlet mouth at described three-phase vortex mixing tank top and described airflow pipe is connected;
Several high-pressure air feedwaies, the other end of described airflow pipe is connected with described high pressure gas feedway;
Reactive tank, described reactive tank are uncovered cell body, are provided with dividing plate in described reactive tank, and described dividing plate connects the diapire sidewall relative with two of described reactive tank; The height of described dividing plate is lower than the height of the sidewall of described reactive tank; Described dividing plate is divided into first cavity and second cavity with the inner chamber of described reactive tank, and described first cavity is the explosion chamber; Be connected by connecting tube between last three-phase vortex mixing tank of described explosion chamber and described three-phase vortex mixing tank group, the water-in of described connecting tube connects the water outlet of described last three-phase vortex mixing tank bottom, described connecting tube stretches into described explosion chamber, and the water outlet of described connecting tube is positioned at the bottom in described explosion chamber;
With the slag scraper that the scum silica frost in the described reactive tank strikes off, described slag scraper is positioned at the groove top of described reactive tank;
The scum silica frost that contains the scum silica frost that described slag scraper strikes off contains device, described scum silica frost contain device be positioned at described slag scraper slag notch below;
Collect the header of emission purification waste water, the sidewall bottom of described reactive tank has header through hole is installed, and one of described header is arranged in the described reactive tank, and the other end is passed described header installation through hole and connected described the 4th pipeline.
5. cold rolling oil-containing of iron and steel according to claim 4 and emulsifying liquid waste water treatment unit, it is characterized in that: described high-pressure air feedway is an air compressor machine, described header is a perforated pipe, and described slag scraper is a slag scraper, and it is sludge bucket that described scum silica frost contains device.
6. cold rolling oil-containing of iron and steel according to claim 4 and emulsifying liquid waste water treatment unit, it is characterized in that: the quantity of described three-phase vortex mixing tank is three to six, the quantity of described transport pipe is lacked one than the quantity of described three-phase vortex mixing tank, and the quantity of described flocculation agent transport pipe, described flocculant concentration device, described airflow pipe, described high-pressure air feedway is identical with the quantity of described three-phase vortex mixing tank.
7. cold rolling oil-containing of iron and steel according to claim 1 and emulsifying liquid waste water treatment unit is characterized in that, described catalytic oxidizing equipment comprises:
Reaction tank;
Feed compressed-air actuated aerating apparatus to described reaction tank, described aerating apparatus comprises air feeder and aeration tube, and described aeration tube is connected with described air feeder, and the aeration tube of described aerating apparatus is arranged in the described reaction tank;
Some titanium battery lead plates, described titanium battery lead plate are divided into anodal titanium battery lead plate and negative pole titanium battery lead plate, and described anodal titanium battery lead plate and negative pole titanium battery lead plate are alternately arranged, and described titanium battery lead plate vertically is arranged in the described reaction tank;
Solid catalyst, described solid catalyst are filled between the described titanium battery lead plate;
Recycle pump, the water-in of described recycle pump is connected by first circulating line with the water outlet of described reaction tank, described first circulating line is provided with the first circulating line control valve, the water outlet of described recycle pump is connected by second circulating line with the circulation fluid import of described reaction tank, and described second circulating line is provided with the second circulating line control valve.
8. cold rolling oil-containing of iron and steel according to claim 7 and emulsifying liquid waste water treatment unit is characterized in that, the catalytic oxidizing equipment in the described catalytic oxidizing equipment group is the 2-4 level, and the air feeder in the described catalytic oxidizing equipment is an air compressor machine.
9. cold rolling oil-containing of iron and steel according to claim 1 and emulsifying liquid waste water treatment unit is characterized in that, described MBR processing unit comprises:
Biochemistry pool, described biochemistry pool of described the 6th pipe connection and described cooling tower,
A series of membrane materials are the membrane module that the microfiltration membrane of PTFE is formed, and described membrane module is arranged in the described biochemistry pool;
Described membrane module of described the 7th pipe connection and described suction pump.
10. cold rolling oil-containing of a kind of iron and steel according to claim 9 and emulsifying liquid waste water treatment unit, it is characterized in that, described MBR processing unit also comprises the aerating apparatus that is used for the film surface of described membrane bioreactor is shaken cleaning, and described aerating apparatus comprises:
Gas blower,
Aeration tube, one of described aeration tube air outlet that connects described gas blower, the part that described aeration tube has a solarization air cap be positioned at described membrane bioreactor membrane module below.
CN2009202115108U 2009-10-29 2009-10-29 Device for treating emulsion and oil-bearing wastewater made by steel cold rolling Expired - Lifetime CN201545764U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103539316A (en) * 2013-10-14 2014-01-29 褚衍洋 Process for simultaneously processing high-concentration waste emulsion, pickling waste liquid, and waste lye
CN104261617A (en) * 2014-09-18 2015-01-07 南京理工大学 Treatment method of waste emulsion
CN105271582A (en) * 2015-11-24 2016-01-27 上海东振环保工程技术有限公司 Leachate advanced treatment device and treatment method for domestic waste landfill
CN105461163A (en) * 2015-11-24 2016-04-06 上海东振环保工程技术有限公司 Wet spinning acrylic production polymeric wastewater treatment system and treatment method
CN105481170A (en) * 2015-11-24 2016-04-13 上海东振环保工程技术有限公司 Treating system and method for coking waste water
CN107913632A (en) * 2016-10-10 2018-04-17 中国石油化工股份有限公司 A kind of ternary mixing arrangement
CN114772836A (en) * 2022-04-28 2022-07-22 青岛海纳能源环保科技开发有限公司 Method for treating waste emulsion

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103539316A (en) * 2013-10-14 2014-01-29 褚衍洋 Process for simultaneously processing high-concentration waste emulsion, pickling waste liquid, and waste lye
CN104261617A (en) * 2014-09-18 2015-01-07 南京理工大学 Treatment method of waste emulsion
CN104261617B (en) * 2014-09-18 2016-09-28 南京理工大学 The processing method of waste emulsified mixture
CN105271582A (en) * 2015-11-24 2016-01-27 上海东振环保工程技术有限公司 Leachate advanced treatment device and treatment method for domestic waste landfill
CN105461163A (en) * 2015-11-24 2016-04-06 上海东振环保工程技术有限公司 Wet spinning acrylic production polymeric wastewater treatment system and treatment method
CN105481170A (en) * 2015-11-24 2016-04-13 上海东振环保工程技术有限公司 Treating system and method for coking waste water
CN105461163B (en) * 2015-11-24 2018-05-25 上海东振环保工程技术有限公司 Wet spinning acrylic produces polymeric wastewater processing system and processing method
CN107913632A (en) * 2016-10-10 2018-04-17 中国石油化工股份有限公司 A kind of ternary mixing arrangement
CN114772836A (en) * 2022-04-28 2022-07-22 青岛海纳能源环保科技开发有限公司 Method for treating waste emulsion
CN114772836B (en) * 2022-04-28 2024-02-27 青岛海纳能源环保科技开发有限公司 Treatment method of waste emulsion

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