CN113788578A - Restaurant wastewater treatment method capable of avoiding secondary pollution - Google Patents
Restaurant wastewater treatment method capable of avoiding secondary pollution Download PDFInfo
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- CN113788578A CN113788578A CN202110960643.0A CN202110960643A CN113788578A CN 113788578 A CN113788578 A CN 113788578A CN 202110960643 A CN202110960643 A CN 202110960643A CN 113788578 A CN113788578 A CN 113788578A
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- 238000004065 wastewater treatment Methods 0.000 title claims description 14
- 239000002351 wastewater Substances 0.000 claims abstract description 81
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000004519 grease Substances 0.000 claims abstract description 41
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 26
- 238000000926 separation method Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000002893 slag Substances 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 29
- 235000019198 oils Nutrition 0.000 claims description 29
- 238000005276 aerator Methods 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 239000006260 foam Substances 0.000 claims description 13
- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 13
- 238000005273 aeration Methods 0.000 claims description 10
- 239000010775 animal oil Substances 0.000 claims description 8
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 8
- 239000008158 vegetable oil Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 244000005700 microbiome Species 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- 235000002906 tartaric acid Nutrition 0.000 claims description 4
- 239000011975 tartaric acid Substances 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 239000013043 chemical agent Substances 0.000 abstract description 3
- 150000002433 hydrophilic molecules Chemical class 0.000 abstract description 3
- 239000010802 sludge Substances 0.000 description 6
- 239000003599 detergent Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000006213 oxygenation reaction Methods 0.000 description 3
- 239000000271 synthetic detergent Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 235000019737 Animal fat Nutrition 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008162 cooking oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013325 dietary fiber Nutrition 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- 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
-
- 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
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/727—Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a method for treating restaurant wastewater to avoid secondary pollution, which comprises the following steps; injecting the restaurant wastewater into a solid-liquid separation device through a water inlet pipe for solid-liquid separation, and discharging obtained solid impurities into a slag collecting barrel for collection; carrying out primary oil-water separation treatment on the waste water without impurities through a catering oil-water separator, separating oil suspended on the liquid surface of the waste water, and collecting the separated waste water; the method adopts a physical mode to decompose the grease in various forms, does not need any chemical agent addition, does not generate secondary pollution, decomposes the grease into hydrophilic molecules, flows out along with water, does not need to be cleaned, has high decomposition speed and high efficiency, has the oil stain removal rate of more than 99 percent, does not mix substances with the grease, and is easy to discharge mud.
Description
Technical Field
The invention relates to the technical field of restaurant wastewater treatment, in particular to a restaurant wastewater treatment method capable of avoiding secondary pollution.
Background
As is known, the restaurant wastewater is high-concentration organic wastewater, the main components of the wastewater are residual food, liquid detergent and water, the liquid detergent mainly comprises macromolecular organic compounds, the rest food mainly comprises starch, dietary fiber, animal fat and the like, so the catering waste water has higher complexity, higher organic matter content and high oiliness, and the suspended impurities are more, according to statistics, the restaurant wastewater usually has five common forms of floating oil, dispersed oil, emulsified oil, dissolved oil and solid oil in a water body, the oil floats on the water surface to form an oil film, oxygen exchange between the atmosphere and the water surface is blocked, the oxygen content in the water body is reduced, in the process of oxidizing, decomposing and dispersing the emulsified oil and the dissolved oil in the water by the microorganisms, the consumption of the dissolved oxygen in the water is accelerated, thereby aggravating the deterioration of water quality, generating bad smell and generating toxic substances in the decomposition process of the grease.
The method for treating restaurant wastewater is a wastewater treatment process for restaurants, for example, the application publication number is CN107555704A, and the invention is named as an invention patent of the restaurant wastewater treatment process, and specifically comprises the following steps of S1, feeding restaurant wastewater into a water collecting well, passing through a regulating reservoir, and feeding into an A/O reaction tank; s2, enabling the wastewater treated by the A/O reaction tank to sequentially enter a sedimentation tank and an intermediate tank, and enabling the wastewater to flow into a BAF tank at a constant speed for treatment after passing through the intermediate tank; s3, treating the waste water treated by the BAF tank in a high-efficiency filter; and S4, discharging the water treated by the high-efficiency filter into a reuse water tank for recycling.
By utilizing the traditional density difference separation mode, floating oil (about 80-85% of the total amount of the oil in the wastewater) in the oil form can be removed, and other oils cannot be removed because the oils cannot float. The resulting problems are as follows: part of grease still exists in the drainage of the grease trap, and the grease can be accumulated in a subsequent pipeline under the condition of direct drainage, so that blockage and stink are caused. When the forced-ventilated case is connected at the back, grease can be accumulated in the forced-ventilated cavity, the operation of the water pump is influenced, and faults are caused. The grease is in a sticky foam agent block shape after being bonded with impurities, combined with the detergent and oxidized; the oil and sludge discharge pipelines are blocked, oil and sludge can not be normally discharged, equipment can only be disassembled for cleaning, subsequent pipelines and lifting cavities can be blocked due to untimely cleaning, waste water is overflowed, the catering drainage time is relatively centralized, and the night off-time is about 10 hours. Because the restaurant drainage contains a large amount of organic matters and grease, the restaurant drainage is fermented and deteriorated after 2 to 3 hours at about 20 ℃, a large amount of bacteria are bred, and the odor of equipment and the surrounding environment is caused.
Disclosure of Invention
The invention aims to provide a method for treating restaurant wastewater to avoid secondary pollution, so as to solve the defects in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme: a method for treating restaurant wastewater to avoid secondary pollution comprises the following steps;
s1: injecting the restaurant wastewater into a solid-liquid separation device through a water inlet pipe for solid-liquid separation, and discharging obtained solid impurities into a slag collecting barrel for collection;
s2: carrying out primary oil-water separation treatment on the waste water without impurities through a catering oil-water separator, separating oil suspended on the liquid surface of the waste water, and collecting the separated waste water;
s3: injecting the wastewater into a grease decomposition device, generating ionic oxygen by combining an active oxygen device and an ion generation device, generating micro bubbles by matching an aeration pump through an aerator, and contacting the micro bubbles with the oily wastewater in a large area to realize grease decomposition.
As a further description of the above technical solution: the step S3 further includes heating the wastewater by the micro-heater, so that the pressure in the bubbles increases and the bubbles are broken to generate a large number of small bubbles, thereby increasing the amount of oxygen intake in the wastewater.
As a further description of the above technical solution: the power of the micro heater is 300W-400W, and the heating temperature of the micro heater is 20-40 ℃.
As a further description of the above technical solution: and in the step S3, the aerators are rotational flow aerators which are uniformly distributed at the bottom of the grease decomposition device and are communicated with an aeration pump through aeration pipes.
As a further description of the above technical solution: and step S2, performing foam separation treatment on the wastewater, specifically, injecting the wastewater subjected to primary separation into a separation barrel, and forming rising bubbles by mechanical air blowing, so that organic matters and other substances with surfactants in the wastewater are enriched in a gas-liquid interface membrane of the bubbles, and then separating the organic matters and other substances through a foam receiver.
As a further description of the above technical solution: the step S3 further comprises the step of acting on the wastewater in the grease decomposition device through an ultrasonic oscillator to generate micro-bubble aeration oscillation to form high-speed fluid combination with the rotational flow aerator so as to change suspended oil beads in the wastewater into smaller units.
As a further description of the above technical solution: the step S3 of large-area contact of the microbubbles and the oily wastewater to realize the decomposition of the grease is to break molecular bonds of animal and vegetable oil, convert the animal and vegetable oil into water and tartaric acid clear water substances, and then decompose the substances through microorganisms in the wastewater.
As a further description of the above technical solution: and the air inflow of the aerator in the step S3 is 0.2L/h-2L/h.
In the technical scheme, the restaurant wastewater treatment method capable of avoiding secondary pollution adopts a physical mode to decompose grease in various forms, no chemical agent is added, no secondary pollution is generated, the grease is decomposed into hydrophilic molecules and flows out along with water, cleaning is not needed, the decomposition speed is high, the efficiency is high, the oil stain removal rate can reach more than 99%, the substances are not mixed with the grease, sludge is easy to discharge, equipment has an auxiliary effect on degrading organic matters, and the sludge amount is reduced; the phenomena of dirt, blockage, water overflow and the like of the traditional oil separator are avoided; the maintenance work in the later period is simple and convenient, the environment is clean and sanitary, no grease is generated, the illegal cooking oil is fundamentally eliminated, in addition, the oil-water separation equipment is firstly used for separating 60-80% of suspended grease in the wastewater before the grease decomposition treatment is carried out in the catering wastewater treatment method, the burden of the subsequent grease decomposition is reduced, the subsequent grease decomposition is more comprehensive and thorough, meanwhile, the foam separation treatment is carried out on the wastewater, the situation that the catering wastewater contains a large amount of synthetic detergents to form a foam layer is prevented, the reoxygenation rate and the oxygenation degree of water are reduced, and the subsequent grease decomposition efficiency is further enhanced.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic block diagram of a process of a restaurant wastewater treatment method for avoiding secondary pollution according to an embodiment of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a technical solution: a method for treating restaurant wastewater to avoid secondary pollution comprises the following steps;
s1: injecting the restaurant wastewater into a solid-liquid separation device through a water inlet pipe for solid-liquid separation, and discharging obtained solid impurities into a slag collecting barrel for collection;
s2: carrying out primary oil-water separation treatment on the waste water without impurities through a catering oil-water separator, separating oil suspended on the liquid surface of the waste water, and collecting the separated waste water;
s3: injecting the wastewater into a grease decomposition device, generating ionic oxygen by combining an active oxygen device and an ion generation device, and generating micro bubbles by matching an aeration pump through an aerator, wherein the air inflow of the aerator is 0.2L/h-2L/h, and the micro bubbles are in large-area contact with the oil-containing wastewater to realize grease decomposition.
Step S3 further comprises heating the wastewater by the micro heater, wherein the power of the micro heater is 300W-400W, and the heating temperature of the micro heater is 20-40 ℃, so that the pressure in the bubbles is increased and the bubbles are broken to generate a large amount of small bubbles, the oxygen intake in the wastewater is increased, the oxygen utilization rate is obviously improved, the power efficiency is high, and the subsequent wastewater decomposition efficiency is enhanced.
And step S2, performing foam separation treatment on the wastewater, specifically, injecting the primarily separated wastewater into a separation barrel, and forming rising bubbles by mechanical blowing, so that organic matters and other substances with surfactants in the wastewater are enriched in a gas-liquid interface membrane of the bubbles, and then separating the organic matters and other substances through a foam receiver. Specifically, the catering wastewater contains a large amount of synthetic detergent, the concentration of LAS (anionic detergent) in the wastewater can generally reach 10-60 mg/L, 10-100 mg/L of CODA (molecular oxygen demand) and 7.3-8.6 of PH, a foam layer can be formed, the reoxygenation rate and the oxygenation degree of water are reduced, algae plants in the water grow excessively due to carbonate and phosphate contained in the detergent, water eutrophication is formed, water organisms are endangered, the air in the wastewater forms stable foam by bubbling into the wastewater, and the surfactant adsorbed on a bubble bimolecular membrane is separated from the solution due to buoyancy floating, so that the catering wastewater is purified.
Step S3 further comprises the step of acting on the wastewater in the grease decomposition device through an ultrasonic oscillator to generate micro-bubble aeration oscillation to form high-speed fluid combination with the cyclone aerator, so that suspended oil beads in the wastewater are changed into smaller units and subjected to oxidation and surface tension, the contact area is enlarged, and grease is effectively and rapidly decomposed. The decomposition process is to break the molecular bond of the animal and vegetable oil, so that the animal and vegetable oil is converted into hydrophilic substances such as water, tartaric acid and the like, and finally, the microorganisms in the wastewater are decomposed.
The step S3 is to break the molecular bond of animal and vegetable oil to convert the animal and vegetable oil into water and tartaric acid, decompose the micro bubbles in the waste water, remove various bacteria and stink in the waste water, effectively reduce indexes such as COD, and improve environment.
According to the restaurant wastewater treatment method capable of avoiding secondary pollution, grease in various forms is decomposed in a physical mode, no chemical agent is added, secondary pollution is avoided, the grease is decomposed into hydrophilic molecules and flows out along with water, cleaning is not needed, the decomposition speed is high, the efficiency is high, the oil stain removal rate can reach more than 99%, substances are not mixed with the grease, sludge is easy to discharge, equipment has an auxiliary effect on degrading organic matters, and the sludge amount is reduced; the phenomena of dirt, blockage, water overflow and the like of the traditional oil separator are avoided; the maintenance work in the later period is simple and convenient, the environment is clean and sanitary, no grease is generated, and 'swill-cooked dirty oil' is fundamentally eliminated, and the catering wastewater treatment method firstly separates 60% -80% of suspended grease in the wastewater through the oil-water separation equipment during grease decomposition treatment, so that the burden of subsequent grease decomposition is reduced, the subsequent grease decomposition is more comprehensive and thorough, and meanwhile, the catering wastewater is prevented from containing a large amount of synthetic detergent to form a foam layer through foam separation treatment of the wastewater, the reoxygenation rate and the oxygenation degree of water are reduced, and the subsequent grease decomposition efficiency is further enhanced.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. A method for treating restaurant wastewater to avoid secondary pollution is characterized by comprising the following steps;
s1: injecting the restaurant wastewater into a solid-liquid separation device through a water inlet pipe for solid-liquid separation, and discharging obtained solid impurities into a slag collecting barrel for collection;
s2: carrying out primary oil-water separation treatment on the waste water without impurities through a catering oil-water separator, separating oil suspended on the liquid surface of the waste water, and collecting the separated waste water;
s3: injecting the wastewater into a grease decomposition device, generating ionic oxygen by combining an active oxygen device and an ion generation device, generating micro bubbles by matching an aeration pump through an aerator, and contacting the micro bubbles with the oily wastewater in a large area to realize grease decomposition.
2. The method as claimed in claim 1, wherein the step S3 further comprises heating the waste water by a micro heater, so that the pressure inside the bubbles increases and the bubbles are broken to generate a large number of small bubbles, thereby increasing the amount of oxygen intake in the waste water.
3. The restaurant wastewater treatment method for avoiding secondary pollution as claimed in claim 2, wherein the power of the micro heater is 300W-400W, and the heating temperature of the micro heater is 20-40 ℃.
4. The method as claimed in claim 1, wherein the aerators in step S3 are cyclone aerators, and the cyclone aerators are uniformly distributed at the bottom of the grease decomposition device and are communicated with the aeration pump through aeration pipes.
5. The restaurant wastewater treatment method for avoiding secondary pollution as claimed in claim 1, wherein the step S2 is followed by performing a foam separation treatment on the wastewater, specifically, injecting the primarily separated wastewater into a separation barrel, and then forming rising bubbles by mechanical blowing so that organic matters and other substances with surfactants in the wastewater are enriched in a gas-liquid interface membrane of the bubbles, and then separating the organic matters and other substances by a foam receiver.
6. The restaurant wastewater treatment method for avoiding secondary pollution as claimed in claim 1, wherein said step S3 further comprises applying ultrasonic oscillator to the wastewater in the grease decomposition device to generate micro bubble aeration oscillation to form high speed fluid combination with the cyclone aerator to change the suspended oil beads in the wastewater into smaller units.
7. The method for treating restaurant wastewater for avoiding secondary pollution as claimed in claim 1, wherein in said step S3, said micro bubbles are contacted with oily wastewater in a large area to decompose oil, specifically, break molecular bonds of animal and vegetable oil, so that animal and vegetable oil are converted into water and tartaric acid clear water substances, and then decomposed by microorganisms in the wastewater.
8. The method for treating restaurant wastewater for avoiding secondary pollution as claimed in claim 1, wherein the air input of the aerator in the step S3 is 0.2L/h-2L/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110960643.0A CN113788578A (en) | 2021-08-20 | 2021-08-20 | Restaurant wastewater treatment method capable of avoiding secondary pollution |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110960643.0A CN113788578A (en) | 2021-08-20 | 2021-08-20 | Restaurant wastewater treatment method capable of avoiding secondary pollution |
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| CN113788578A true CN113788578A (en) | 2021-12-14 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601337A (en) * | 2013-10-15 | 2014-02-26 | 常州思宇环保材料科技有限公司 | Device for removing washing agent from restaurant wastewater |
| CN104649489A (en) * | 2015-01-28 | 2015-05-27 | 梁宇 | Ultrasonic active oxygen micro-aeration oil-water decomposition device |
| CN104649367A (en) * | 2013-11-15 | 2015-05-27 | 天津今誉源环保设备有限公司 | Ion microbubble aeration oil decomposition technology |
| CN104649368A (en) * | 2013-11-15 | 2015-05-27 | 天津今誉源环保设备有限公司 | Novel deodorant grease trap for decomposing fat |
-
2021
- 2021-08-20 CN CN202110960643.0A patent/CN113788578A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601337A (en) * | 2013-10-15 | 2014-02-26 | 常州思宇环保材料科技有限公司 | Device for removing washing agent from restaurant wastewater |
| CN104649367A (en) * | 2013-11-15 | 2015-05-27 | 天津今誉源环保设备有限公司 | Ion microbubble aeration oil decomposition technology |
| CN104649368A (en) * | 2013-11-15 | 2015-05-27 | 天津今誉源环保设备有限公司 | Novel deodorant grease trap for decomposing fat |
| CN104649489A (en) * | 2015-01-28 | 2015-05-27 | 梁宇 | Ultrasonic active oxygen micro-aeration oil-water decomposition device |
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