CN105731707A - MVR processing unit and method for wastewater containing oil and salt - Google Patents
MVR processing unit and method for wastewater containing oil and salt Download PDFInfo
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- CN105731707A CN105731707A CN201610096600.1A CN201610096600A CN105731707A CN 105731707 A CN105731707 A CN 105731707A CN 201610096600 A CN201610096600 A CN 201610096600A CN 105731707 A CN105731707 A CN 105731707A
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
- 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
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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
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention belongs to the technical field of wastewater treatment, and particularly relates to an MVR processing unit for wastewater containing oil and salt. The unit sequentially comprises a wastewater collection tank, a flocculation tank, an integral advection floatation tank, an oil removal filter and an MVR device. The invention further provides an MVR processing method for wastewater containing oil and salt. The unit and method have the advantages that by combining the flocculation settling method, the air floatation method and the MVR crystallization process and improving the formula of an existing flocculant, a good oil and salt removal effect is realized at low cost; compared with a pure chemical/biological treatment method, cost is lower, processing speed is higher, and processed wastewater quantity is as high as 20-100 t/h.
Description
Technical field
The invention belongs to technical field of waste water processing, the MVR being specifically related to a kind of oil-containing brine waste processes device and processing method thereof.
Technical background
Along with the development of society, oils invades water body gradually, forms oily waste water；Oily waste water source is wide, is mainly derived from commercial production and human lives.Oily waste water kind is complicated, originate very extensive, such as with light Hydrocarbon, weight Hydrocarbon, fuel oil, tar, lubricating oil, fat for the oily waste water of main component from oil exploitation, petrochemical industry, iron and steel, coking and mechanical industry, and with animal and plant fat, wax fat, phospholipid and soaps be main component oily waste water from the light industry such as grain and oil processing, meat packing, food and cosmetics and catering trade and resident living.The amount of industrial oily waste water is big, and complicated component, the processing of such as oil exploitation and oil product, refinement and transport, steel rolling water in machine-building, cooling-lubricant etc., the locomotive waste water in transportation industry, the oil-washing tank waste water etc. of railway.Life oily waste water is mainly derived from dining room, restaurant, and such as industrial oily waste water, measures fewer mutually.Show according to relevant information, the whole world has at least 500～10,000,000 tons of oily substances to enter water body by all means every year, not only causing the waste of the pollution of water resource, oil resource, the harm of environmental ecology and health has also been caused people to pay close attention to greatly by oil pollutant.
And under prior art, for in the process technique of oily waste water, there is the method that oily waste water is processed by the method by multi-grade oil water separator, the technical characteristics of the method is as described below: first carry out an oil-water separation, the water outlet of oily-water seperating equipment enters pressurized dissolved air flotation pond, then carries out secondary oil-water separation: the water outlet of flotation tank is sent into oily-water seperating equipment and carried out oil-water separation.Although this technology can process oily waste water, but its processing speed is relatively slow, and the cycle of process is longer, it is impossible to tackle large batch of oily waste water.
There is also employing air supporting under prior art and be combined the advanced treatment process to oily waste water with membrane technology, the technical characteristics of the method is as described below: processing waste water initially with dissolved air flotation process, the product water obtained adopts ultrafiltration membrane treatment system and reverse osmosis treatment system to carry out deep purifying again.Although this technology also can process oily waste water, but its for oily waste water composition comparatively fixing, once oily waste water composition is unstable, when as relatively decentralized in oil pollution material kind, its disposal ability is had a greatly reduced quality.
Additionally there are and adopt electricity flocculation, electric pneumatically supported way oil removing and float, remove COD with the method degradation of organic substances of ozone ultrasonic oxidation, thus solving the process problem of oily waste water, making the oily waste water stably reaching standard after process.But, under above-mentioned several prior aries for oily wastewater treatment method, but for high-volume, composition is unstable, and the oiliness sewage treatment that source is in discontinuity has very big difficulty, wastes time and energy, and treatment effeciency and effect are all undesirable.
Summary of the invention
It is an object of the invention to: provide the MVR of a kind of oil-containing brine waste to process device.
The technical scheme realizing the object of the invention is: the MVR of a kind of oil-containing brine waste processes device, includes wastewater collection pond, flocculation basin, integration advection flotation tank, oil removal filter and MVR device successively；Wherein integration advection flotation tank includes flotation tank, air compressor machine, dissolving, air dissolved pump, reflux tank and Slag Scraping Device；Air is pressed in dissolving by described air compressor machine, recirculation water in reflux tank is pumped in dissolving by air dissolved pump, air and recirculation water carry out being sufficiently mixed dissolving in dissolving, saturated dissolved gas water is pipelined to flotation tank and mixes mutually with waste water, small wadding grain in water, tiny oil droplets and microbubble mutually collide adhesion and float, wadding grain and oil droplet floating to the water surface are collected discharge by Slag Scraping Device, and lower floor's water purification goes out to flow to oil removal filter, and partially purifying water enters reflux tank；Wherein said MVR device includes centrifugal vapour compression machine, the heat exchanger being connected to this compressor two-port and separator, PLC control cabinet, forced circulation pump, preheater and vacuum pump；Described heat exchanger and separator are connected with each other again simultaneously；Described centrifugal vapour compression machine, heat exchanger, separator are connected with PLC control cabinet and are all controlled；Preheater is connected with feed pump, and the waste water through deoiling treatment is pressed into preheater by described feed pump；Described preheater is connected with the outlet of centrifugal vapour compression machine again, and the waste water through deoiling treatment is preheated to evaporating temperature by the vapours in preheater, enters back into heat exchanger, vapours heat, and heated waste water enters separator, gas-water separation；Waste water after gas-water separation forms supersaturated salt solution and removes the salinity of precipitation by centrifugation, then is pumped in heat exchanger by forced circulation and proceeds evaporation and concentration, formation circulation.
Preferably, described flocculation basin also includes medicine system and blender.
Preferably, described medicine system includes dosing pump, medicament storage tank and connecting line thereof.
Preferably, it is provided with grid bottom described flocculation basin, it is possible to remove the bigger wadding grain that flocculation generates.
The second object of the present invention is in that to provide the MVR processing method of a kind of oil-containing brine waste, comprises the steps:
A. waste water is first at wastewater collection pond preliminary retention, and in the retention period, big particle diameter oil droplet floats naturally, is siphoned away by surface oil slick by oil skimming belt, passes through to raise subsequently to send pump that the oily waste water of preliminary treatment is delivered to flocculation basin；
B. by medicine system, flocculant added in flocculation basin and be sufficiently stirred for；Described flocculant includes aluminium polychlorid 20～50 parts, bodied ferric sulfate 5～15 parts, sodium silicate 0.1～1 part, polyacrylamide 0.2～3 part and calcium oxide 0.5～5 part (in mass)；Fully after flocculation, bottom flocculation basin, the waste water processed being discharged flocculation basin, the bigger wadding grain that flocculation generates is flocculated the grid bottom pond and filters；
C. the waste water after flocculation basin processes is imported integration advection flotation tank, air is pressed in dissolving by air compressor machine, recirculation water in reflux tank is pumped in dissolving by air dissolved pump, air and recirculation water carry out being sufficiently mixed dissolving in dissolving, saturated dissolved gas water is pipelined to flotation tank and mixes mutually with waste water, small wadding grain in water, remaining tiny oil droplets and microbubble mutually collide adhesion and float, wadding grain and oil droplet floating to the water surface are collected discharge by Slag Scraping Device, lower floor's water purification goes out to flow to oil removal filter, and partially purifying water enters reflux tank；
D. the waste water after integration advection flotation tank processes is filtered booster pump by oil removing and import in oil removal filter, remove waste water small particles solid impurity and remaining oil divides；
E. being imported by the waste water filtered through oil removal filter in the preheater of MVR device, the waste water through deoiling treatment is preheated to evaporating temperature by the vapours in preheater, enters back into heat exchanger, vapours heat, and heated waste water enters separator, gas-water separation；Waste water after gas-water separation forms supersaturated salt solution and removes the salinity of precipitation by centrifugation, then is pumped in heat exchanger by forced circulation and proceeds evaporation and concentration, formation circulation.
Preferably, the using method of concrete flocculant is as follows: sodium silicate and distilled water are made into the sodium silicate aqueous solution that concentration is 5～10%, are then added thereto to hydrochloric acid solution while stirring, until pH=2.2 ± 0.5, obtain polysilicon acid；Put into after polysilicon acid, aluminium polychlorid, bodied ferric sulfate and distilled water are fully mixed in the first medicament storage tank of medicine system；PAMC and distilled water are put into after fully mixing in the second medicament storage tank of medicine system；First calcium oxide is sprinkling upon in flocculation basin uniformly, after stirring, opens the first medicament storage tank, the aqueous solution of polysilicon acid, aluminium polychlorid, bodied ferric sulfate is added in flocculation basin and stirs；It is then turned on the second medicament storage tank, PAMC aqueous solution is added in flocculation basin and stirs.Inventor have found that, using a certain proportion of polysilicon acid, aluminium polychlorid, bodied ferric sulfate as mixing inorganic flocculating agent, be combined use with PAMC, it is possible to improve efficiency of deoiling significantly；The calcium oxide added then can regulate the pH value of waste water to the condition being conducive to flocculation, and react, with water, the floccule body that advantageously forms of calcium hydroxide generated and become thick, closely knit, filtration clearance is high, will not block oil removal filter, increase the replacement cycle of oil removal filter.
The MVR of a kind of oil-containing brine waste of the present invention processes device and processing method, its advantage uses flocculence, By Bubble-floating Method and MVR crystallization processes with having the active effect that by combination, improve existing flocculant formula simultaneously, achieve good oil removing desalination effect at lower cost；Comparing pure chemistry/biological treatment, cost is cheaper, and processing speed is very fast, processes wastewater flow rate up to 20～100 ton hour.
Accompanying drawing illustrates:
Fig. 1 is the flow chart of the MVR process device detailed description of the invention of the oil-containing brine waste of the present invention.
The MVR that Fig. 2 is the oil-containing brine waste of the present invention processes the structural representation of the detailed description of the invention of MVR device in device.
Accompanying drawing labelling: 1. wastewater collection pond；2. flocculation basin；3. integration advection flotation tank；31. air compressor machine；32. dissolving；33. air dissolved pump；34. reflux tank；4. oil removal filter；5.MVR device；51. centrifugal vapour compression machine；52. heat exchanger；53. separator；54. forced circulation pump；55. preheater；56. vacuum pump；57. anti-surge bypass valve.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is made further description.The chemical reagent used in embodiment and equipment, except special indicating, are commercially available mill run.
Embodiment 1
As depicted in figs. 1 and 2, for certain sweeting agent factory production waste water (pH is about 5), waste water is wastewater collection pond 1 preliminary retention first, in the retention period, big particle diameter oil droplet floats naturally, by oil skimming belt, surface oil slick is siphoned away, subsequently by raise send pump that the waste water of preliminary treatment is delivered to flocculation basin 2 (volume is 200m3), now hold waste water about 100 tons；By medicine system flocculant added in flocculation basin 2 and be sufficiently stirred for；Flocculant is aluminium polychlorid 40kg, bodied ferric sulfate 10kg, sodium silicate 0.5kg, PAMC 1kg and calcium oxide 3.5kg, sodium silicate and distilled water are made into the sodium silicate aqueous solution that concentration is 6%, then the hydrochloric acid solution of 15% it is added thereto to while stirring, until pH=2.2 ± 0.5, obtain polysilicon acid；Put into after polysilicon acid, aluminium polychlorid, bodied ferric sulfate and 500 parts of distilled water are fully mixed in the first medicament storage tank of medicine system；PAMC and 500 parts of distilled water are put in the second medicament storage tank of medicine system after fully mixing, first 3.5kg calcium oxide is sprinkling upon flocculation basin 2 uniformly, it is stirring evenly and then adding into the aqueous solution of aluminium polychlorid, bodied ferric sulfate and sodium silicate, after stir about 20min, add the aqueous solution of PAMC；Fully after flocculation, bottom flocculation basin 2, the waste water processed being discharged flocculation basin, the bigger wadding grain that flocculation generates is flocculated the grid bottom pond 2 and filters；Waste water after flocculation basin 2 processes is imported integration advection flotation tank 3, air is pressed in dissolving 32 by air compressor machine 31, recirculation water in reflux tank 34 is pumped in dissolving 32 by air dissolved pump 33, air and recirculation water carry out being sufficiently mixed dissolving in dissolving 32, saturated dissolved gas water is pipelined to flotation tank and mixes mutually with waste water, small wadding grain in water, the tiny oil droplets of remaining and microbubble mutually collide adhesion and float, wadding grain and oil droplet floating to the water surface are collected discharge by Slag Scraping Device, lower floor's water purification goes out to flow to oil removal filter 4, partially purifying water enters reflux tank 34；In the present embodiment, oil removal filter 4 adopts the oil removal filter that model is SD-10-1 4 that Changzhou three ancient cooking vessel Environmental Protection Technology Co., Ltd produces, when wastewater treatment capacity is 20 ton hour, it is necessary to six set oil removal filters 4 run simultaneously.
The waste water filtered through oil removal filter 4 is imported in the preheater of MVR device 5, waste water through deoiling treatment is preheated to evaporating temperature by the vapours in preheater 55, enters back into heat exchanger 52, vapours heats, heated waste water enters separator 53, gas-water separation；Waste water after gas-water separation forms supersaturated salt solution and removes the salinity of precipitation by centrifugation, then is pressed in heat exchanger 52 by forced circulation pump 54 and proceeds evaporation and concentration, formation circulation.The introducing of anti-surge bypass valve 57 avoids the surge occurred in centrifugal vapour compression machine 51 startup-shutdown or running.Advantage of the invention is that the waste water that can process floorboard with high oil content (oil-containing 5000～10000mg/L), high salinity (can process saliferous quality up to 30%), equipment is relatively simple, and maintenance cost is relatively low, and wastewater treatment expense is also comparatively cheap.
Embodiment 2
For certain sweeting agent factory production waste water (pH is about 5.5), waste water is wastewater collection pond 1 (preliminary retention first, in the retention period, big particle diameter oil droplet floats naturally, by oil skimming belt, surface oil slick is siphoned away, subsequently by raise send pump that the waste water of preliminary treatment is delivered to flocculation basin 2 (volume is 200m3), now hold waste water about 100 tons；By medicine system flocculant added in flocculation basin 2 and be sufficiently stirred for；Flocculant is aluminium polychlorid 25kg, bodied ferric sulfate 15kg, sodium silicate 1kg, PAMC 2kg and calcium oxide 1.5kg, puts in the first medicament storage tank of medicine system after aluminium polychlorid, bodied ferric sulfate, sodium silicate and 500 parts of distilled water fully being mixed；PAMC and 600 parts of distilled water are put in the second medicament storage tank of medicine system after fully mixing, first calcium oxide is sprinkling upon uniformly flocculation basin 2, it is stirring evenly and then adding into the aqueous solution of aluminium polychlorid, bodied ferric sulfate and sodium silicate, after stir about 20min, add the aqueous solution of PAMC；Fully after flocculation, bottom flocculation basin 2, the waste water processed being discharged flocculation basin, the bigger wadding grain that flocculation generates is flocculated the grid bottom pond 2 and filters；Waste water after flocculation basin 2 processes is imported integration advection flotation tank 3, air is pressed in dissolving 32 by air compressor machine 31, recirculation water in reflux tank 34 is pumped in dissolving 32 by air dissolved pump 33, air and recirculation water carry out being sufficiently mixed dissolving in dissolving 32, saturated dissolved gas water is pipelined to flotation tank and mixes mutually with waste water, small wadding grain in water, the tiny oil droplets of remaining and microbubble mutually collide adhesion and float, wadding grain and oil droplet floating to the water surface are collected discharge by Slag Scraping Device, lower floor's water purification goes out to flow to oil removal filter 4, partially purifying water enters reflux tank 34；In the present embodiment, oil removal filter 4 adopts the oil removal filter that model is SD-10-1 4 that Changzhou three ancient cooking vessel Environmental Protection Technology Co., Ltd produces, when wastewater treatment capacity is 20 ton hour, it is necessary to six set oil removal filters 4 run simultaneously.
The waste water filtered through oil removal filter 4 is imported in the preheater of MVR device 5, waste water through deoiling treatment is preheated to evaporating temperature by the vapours in preheater 55, enters back into heat exchanger 52, vapours heats, heated waste water enters separator 53, gas-water separation；Waste water after gas-water separation forms supersaturated salt solution and removes the salinity of precipitation by centrifugation, then is pressed in heat exchanger 52 by forced circulation pump 54 and proceeds evaporation and concentration, formation circulation.
Embodiment 3
For certain pharmacy factory production waste water (pH is about 6), waste water is wastewater collection pond 1 (preliminary retention first, in the retention period, big particle diameter oil droplet floats naturally, by oil skimming belt, surface oil slick is siphoned away, subsequently by raise send pump that the waste water of preliminary treatment is delivered to flocculation basin 2 (volume is 200m3), now hold waste water about 100 tons；By medicine system flocculant added in flocculation basin 2 and be sufficiently stirred for；Flocculant is aluminium polychlorid 50kg, bodied ferric sulfate 5kg, sodium silicate 0.2kg, PAMC 3kg and calcium oxide 0.5kg, puts in the first medicament storage tank of medicine system after aluminium polychlorid, bodied ferric sulfate, sodium silicate and 500 parts of distilled water fully being mixed；PAMC and 600 parts of distilled water are put in the second medicament storage tank of medicine system after fully mixing, first calcium oxide is sprinkling upon uniformly flocculation basin 2, it is stirring evenly and then adding into the aqueous solution of aluminium polychlorid, bodied ferric sulfate and sodium silicate, after stir about 20min, add the aqueous solution of PAMC；Fully after flocculation, bottom flocculation basin 2, the waste water processed being discharged flocculation basin, the bigger wadding grain that flocculation generates is flocculated the grid bottom pond 2 and filters；Waste water after flocculation basin 2 processes is imported integration advection flotation tank 3, air is pressed in dissolving 32 by air compressor machine 31, recirculation water in reflux tank 34 is pumped in dissolving 32 by air dissolved pump 33, air and recirculation water carry out being sufficiently mixed dissolving in dissolving 32, saturated dissolved gas water is pipelined to flotation tank and mixes mutually with waste water, small wadding grain in water, the tiny oil droplets of remaining and microbubble mutually collide adhesion and float, wadding grain and oil droplet floating to the water surface are collected discharge by Slag Scraping Device, lower floor's water purification goes out to flow to oil removal filter 4, partially purifying water enters reflux tank 34；In the present embodiment, oil removal filter 4 adopts the oil removal filter that model is SD-10-1 4 that Changzhou three ancient cooking vessel Environmental Protection Technology Co., Ltd produces, when wastewater treatment capacity is 100 ton hour, it is necessary to 30 set oil removal filters 4 run simultaneously.
The waste water filtered through oil removal filter 4 is imported in the preheater of MVR device 5, waste water through deoiling treatment is preheated to evaporating temperature by the vapours in preheater 55, enters back into heat exchanger 52, vapours heats, heated waste water enters separator 53, gas-water separation；Waste water after gas-water separation forms supersaturated salt solution and removes the salinity of precipitation by centrifugation, then is pressed in heat exchanger 52 by forced circulation pump 54 and proceeds evaporation and concentration, formation circulation.
Table 1 oil removing experimental result
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| Waste water oil content | 5120mg/L | 4332mg/L | 3762mg/L |
| Water outlet oil content | 36mg/L | 29mg/L | 21mg/L |
| Clearance | 99.3% | 99.3% | 99.4% |
Above-mentioned water outlet oil content is to filter through oil removal filter 4 at waste water, and measures before entering MVR device 5.
Claims (6)
1. the MVR of an oil-containing brine waste processes device, it is characterised in that include wastewater collection pond (1), flocculation basin (2), integration advection flotation tank (3), oil removal filter (4) and MVR device (5) successively；Wherein integration advection flotation tank (3) includes flotation tank, air compressor machine (31), dissolving (32), air dissolved pump (33), reflux tank (34) and Slag Scraping Device；
Air is pressed in dissolving (32) by described air compressor machine (31), recirculation water in reflux tank (34) is pumped in dissolving (32) by air dissolved pump (33), air and recirculation water carry out being sufficiently mixed dissolving in dissolving (32), saturated dissolved gas water is pipelined to flotation tank and mixes mutually with waste water, small wadding grain in water, tiny oil droplets and microbubble mutually collide adhesion and float, wadding grain and oil droplet floating to the water surface are collected discharge by Slag Scraping Device, lower floor's water purification goes out to flow to oil removal filter, and partially purifying water enters reflux tank (34)；
Described MVR device includes centrifugal vapour compression machine (51), the heat exchanger (52) being connected to this centrifugal vapour compression machine (51) two-port and separator (53), PLC control cabinet, forced circulation pump (54), preheater (55) and vacuum pump (56)；Described heat exchanger (52) and separator (53) are connected with each other again simultaneously；Described centrifugal vapour compression machine (51), heat exchanger (52), separator (53) are connected with PLC control cabinet and are all controlled；Described preheater (55) is connected with feed pump, and the waste water through deoiling treatment is pressed into preheater (55) by described feed pump；Described preheater (55) is connected with the outlet of centrifugal vapour compression machine (51) again, in preheater, the waste water through deoiling treatment is preheated to evaporating temperature by the vapours of (55), enter back into heat exchanger (52), heated by vapours, heated waste water enters separator (53), gas-water separation；Waste water after gas-water separation forms supersaturated salt solution and removes the salinity of precipitation by centrifugation, then is pressed in heat exchanger (52) by forced circulation pump (54) and proceeds evaporation and concentration, formation circulation.
2. the MVR of oil-containing brine waste as claimed in claim 1 processes device, it is characterised in that described flocculation basin also includes medicine system and blender in (2).
3. the MVR of oil-containing brine waste as claimed in claim 2 processes device, it is characterised in that described medicine system includes dosing pump, medicament storage tank and connecting line thereof.
4. the MVR of oil-containing brine waste as claimed in claim 2 processes device, it is characterised in that described flocculation basin (2) bottom is provided with grid, it is possible to remove the bigger wadding grain that flocculation generates.
5. the MVR processing method of an oil-containing brine waste, it is characterised in that comprise the steps:
A. waste water is first at wastewater collection pond (1) preliminary retention, and in the retention period, big particle diameter oil droplet floats naturally, is siphoned away by surface oil slick by oil skimming belt, passes through to raise subsequently to send pump that the oily waste water of preliminary treatment is delivered to flocculation basin (2)；
B. by medicine system flocculant added in flocculation basin (2) and be sufficiently stirred for；Described flocculant includes aluminium polychlorid 20～50 parts, bodied ferric sulfate 5～15 parts, sodium silicate 0.1～1 part, polyacrylamide 0.2～3 part and calcium oxide 0.5～5 part；Fully after flocculation, bottom flocculation basin, the waste water processed being discharged flocculation basin (2), the bigger wadding grain that flocculation generates is flocculated the grid of bottom, pond (2) and filters；
C. integration advection flotation tank (3) will be imported through the waste water after flocculation basin (2) processes, air is pressed in dissolving (32) by air compressor machine (31), recirculation water in reflux tank (34) is pumped in dissolving (32) by air dissolved pump (33), air and recirculation water carry out being sufficiently mixed dissolving in dissolving (32), saturated dissolved gas water is pipelined to flotation tank and mixes mutually with waste water, small wadding grain in water, the tiny oil droplets of remaining and microbubble mutually collide adhesion and float, wadding grain and oil droplet floating to the water surface are collected discharge by Slag Scraping Device, lower floor's water purification goes out to flow to oil removal filter, partially purifying water enters reflux tank (34)；
D. will filter booster pump through the waste water after integration advection flotation tank (3) processes by oil removing and import in oil removal filter (4), and remove waste water small particles solid impurity and remaining oil divides；
E. will import in the preheater (55) of MVR device (5) through the waste water that oil removal filter (4) filter, waste water is preheated to evaporating temperature by the vapours in described preheater (55), enter back into heat exchanger (52), heated by vapours, heated waste water enters separator (53), gas-water separation；Waste water after separation is pressed in heat exchanger (52) by forced circulation pump (54) again and proceeds evaporation and concentration, formation circulation.
6. the MVR processing method of oil-containing brine waste as claimed in claim 5, it is characterized in that the using method of described flocculant is as follows: sodium silicate and distilled water are made into the sodium silicate aqueous solution that concentration is 5～10%, then hydrochloric acid solution it is added thereto to while stirring, until pH=2.2 ± 0.5, obtain polysilicon acid；Put into after polysilicon acid, aluminium polychlorid, bodied ferric sulfate and distilled water are fully mixed in the first medicament storage tank of medicine system；PAMC and distilled water are put into after fully mixing in the second medicament storage tank of medicine system；First calcium oxide is sprinkling upon uniformly in flocculation basin (2), after stirring, opens the first medicament storage tank, the aqueous solution of polysilicon acid, aluminium polychlorid, bodied ferric sulfate is added in flocculation basin (2) and stirs；It is then turned on the second medicament storage tank, PAMC aqueous solution is added in flocculation basin (2) and stirs.
Priority Applications (1)
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277468A (en) * | 2016-09-22 | 2017-01-04 | 武汉嘉讯源科技有限公司 | A kind of method removing oils from high salinity DMF waste water |
| CN108103313A (en) * | 2018-01-30 | 2018-06-01 | 四川思达能环保科技有限公司 | Oil-containing acid mist processing system and method in a kind of hydrometallurgy |
| CN108097140A (en) * | 2017-12-15 | 2018-06-01 | 陕西大秦环境科技有限公司 | A kind of intensified by ultrasonic wave pulse suspension formula carbide slag slurrying integrated apparatus |
| CN109502870A (en) * | 2018-12-31 | 2019-03-22 | 天津滨港电镀企业管理有限公司 | A kind of plating garden derusting waste hydrochloric acid triple effect evaporation processing system and pretreating process |
| CN109534574A (en) * | 2018-12-21 | 2019-03-29 | 泽州县和美环保科技有限公司 | A kind of processing method of waste emulsified mixture |
| CN109678273A (en) * | 2018-12-17 | 2019-04-26 | 嘉兴学院 | A kind of purifying treatment method of rawhide preimpregnation aqueous waste solution |
| CN109824198A (en) * | 2019-03-13 | 2019-05-31 | 苏州希图环保科技有限公司 | A kind of oil-containing high-salt wastewater processing system and technique |
| CN110386690A (en) * | 2019-07-19 | 2019-10-29 | 北京朗新明环保科技有限公司南京分公司 | A kind of spraying pre-treatment Wastewater zero-discharge treatment system |
| CN110526495A (en) * | 2019-08-12 | 2019-12-03 | 中原环资科技有限公司 | A kind of novel waste emulsified mixture treatment process |
| CN110981047A (en) * | 2019-11-08 | 2020-04-10 | 东莞道汇环保科技股份有限公司 | Treatment process of oily sewage of ship |
| CN113526791A (en) * | 2021-07-23 | 2021-10-22 | 上海中器环保科技有限公司 | Treatment device and method for biodiesel production wastewater |
| CN114656096A (en) * | 2022-05-05 | 2022-06-24 | 武汉中测联环境技术有限公司 | High-salt high-nitrogen wastewater treatment device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1161940A (en) * | 1996-03-15 | 1997-10-15 | 温士武 | Method for treating dinitro-diazo-phenol waste liquid and equipment thereof |
| CN101003842A (en) * | 2006-12-19 | 2007-07-25 | 刘和清 | New clarification technique for refining sugar from sugar cane |
| CN101475272A (en) * | 2009-01-22 | 2009-07-08 | 武汉钢铁(集团)公司 | Pretreatment process for oily watewater of cold rolling mill |
| CN203959862U (en) * | 2014-06-16 | 2014-11-26 | 溧阳德维透平机械有限公司 | A kind of MVR evaporation concentration equipment for high-salt wastewater treatment industry |
| CN104671318A (en) * | 2015-03-05 | 2015-06-03 | 襄阳宏伟航空器有限责任公司 | Pump dissolving type air floating system |
| CN105110514A (en) * | 2015-09-23 | 2015-12-02 | 昆明有色冶金设计研究院股份公司 | Method and device for treating emulsified oil wastewater generated from air compressor |
-
2016
- 2016-02-22 CN CN201610096600.1A patent/CN105731707A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1161940A (en) * | 1996-03-15 | 1997-10-15 | 温士武 | Method for treating dinitro-diazo-phenol waste liquid and equipment thereof |
| CN101003842A (en) * | 2006-12-19 | 2007-07-25 | 刘和清 | New clarification technique for refining sugar from sugar cane |
| CN101475272A (en) * | 2009-01-22 | 2009-07-08 | 武汉钢铁(集团)公司 | Pretreatment process for oily watewater of cold rolling mill |
| CN203959862U (en) * | 2014-06-16 | 2014-11-26 | 溧阳德维透平机械有限公司 | A kind of MVR evaporation concentration equipment for high-salt wastewater treatment industry |
| CN104671318A (en) * | 2015-03-05 | 2015-06-03 | 襄阳宏伟航空器有限责任公司 | Pump dissolving type air floating system |
| CN105110514A (en) * | 2015-09-23 | 2015-12-02 | 昆明有色冶金设计研究院股份公司 | Method and device for treating emulsified oil wastewater generated from air compressor |
Non-Patent Citations (2)
| Title |
|---|
| 孙剑辉等: "聚硅酸盐类絮凝剂的研究进展", 《工业水处理》 * |
| 韩迪等: "聚硅酸盐类絮凝剂的制备及研究进展", 《广州化工》 * |
Cited By (14)
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|---|---|---|---|---|
| CN106277468A (en) * | 2016-09-22 | 2017-01-04 | 武汉嘉讯源科技有限公司 | A kind of method removing oils from high salinity DMF waste water |
| CN108097140A (en) * | 2017-12-15 | 2018-06-01 | 陕西大秦环境科技有限公司 | A kind of intensified by ultrasonic wave pulse suspension formula carbide slag slurrying integrated apparatus |
| CN108103313B (en) * | 2018-01-30 | 2024-01-12 | 四川思达能环保科技有限公司 | Oily acid mist treatment system and method in hydrometallurgy |
| CN108103313A (en) * | 2018-01-30 | 2018-06-01 | 四川思达能环保科技有限公司 | Oil-containing acid mist processing system and method in a kind of hydrometallurgy |
| CN109678273A (en) * | 2018-12-17 | 2019-04-26 | 嘉兴学院 | A kind of purifying treatment method of rawhide preimpregnation aqueous waste solution |
| CN109534574A (en) * | 2018-12-21 | 2019-03-29 | 泽州县和美环保科技有限公司 | A kind of processing method of waste emulsified mixture |
| CN109502870A (en) * | 2018-12-31 | 2019-03-22 | 天津滨港电镀企业管理有限公司 | A kind of plating garden derusting waste hydrochloric acid triple effect evaporation processing system and pretreating process |
| CN109824198A (en) * | 2019-03-13 | 2019-05-31 | 苏州希图环保科技有限公司 | A kind of oil-containing high-salt wastewater processing system and technique |
| CN110386690A (en) * | 2019-07-19 | 2019-10-29 | 北京朗新明环保科技有限公司南京分公司 | A kind of spraying pre-treatment Wastewater zero-discharge treatment system |
| CN110526495A (en) * | 2019-08-12 | 2019-12-03 | 中原环资科技有限公司 | A kind of novel waste emulsified mixture treatment process |
| CN110981047A (en) * | 2019-11-08 | 2020-04-10 | 东莞道汇环保科技股份有限公司 | Treatment process of oily sewage of ship |
| CN110981047B (en) * | 2019-11-08 | 2022-04-29 | 东莞道汇环保科技股份有限公司 | Treatment process of oily sewage of ship |
| CN113526791A (en) * | 2021-07-23 | 2021-10-22 | 上海中器环保科技有限公司 | Treatment device and method for biodiesel production wastewater |
| CN114656096A (en) * | 2022-05-05 | 2022-06-24 | 武汉中测联环境技术有限公司 | High-salt high-nitrogen wastewater treatment device |
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