CN114394693A - Clarification treatment method for industrial oily wastewater - Google Patents
Clarification treatment method for industrial oily wastewater Download PDFInfo
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- CN114394693A CN114394693A CN202210075099.6A CN202210075099A CN114394693A CN 114394693 A CN114394693 A CN 114394693A CN 202210075099 A CN202210075099 A CN 202210075099A CN 114394693 A CN114394693 A CN 114394693A
- Authority
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- China
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- oily wastewater
- calcium oxide
- container
- filtrate
- mixed solution
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- 239000002351 wastewater Substances 0.000 title claims abstract description 33
- 238000005352 clarification Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 19
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 17
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000292 calcium oxide Substances 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000005119 centrifugation Methods 0.000 claims abstract description 12
- 239000000706 filtrate Substances 0.000 claims abstract description 12
- 239000011259 mixed solution Substances 0.000 claims abstract description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000007791 liquid phase Substances 0.000 claims abstract description 6
- 238000000967 suction filtration Methods 0.000 claims abstract description 6
- 230000007935 neutral effect Effects 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000003921 oil Substances 0.000 description 12
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- 239000010865 sewage Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 235000015170 shellfish Nutrition 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000238557 Decapoda Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010685 fatty oil Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000004130 lipolysis Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
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
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- 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
-
- 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
Landscapes
- 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)
- Water Treatment By Sorption (AREA)
Abstract
A clarification treatment method of industrial oily wastewater comprises the following steps: putting the oily wastewater into a container, and adding micron-sized calcium oxide particles, wherein the proportion of the oily wastewater to the calcium oxide is that 0.5-2.2g of calcium oxide is added into every 15-15mL of the oily wastewater; the temperature in the container is controlled to be 50-80 ℃, and the stirring is carried out for 12 hours at the rotating speed of 100-; adding porous alumina particles into the container, and continuously stirring for 4 hours to obtain a mixed solution, wherein the addition amount of the calcium oxide is 1.0-2.0g per 15-15mL of oily wastewater; transferring the mixed solution into a centrifuge for centrifugation for 3min, wherein the centrifugation rotation speed is 800-; and adding sulfuric acid with the pH value of 2 into the filtrate to adjust the pH value of the filtrate to be neutral, and performing suction filtration again to obtain a clear liquid phase. The method has the advantages of simple steps, stable and efficient treatment effect and low cost.
Description
Technical Field
The invention relates to a clarification treatment method of industrial oily wastewater.
Background
The oily waste water has wide sources, and the main components of the oily waste water comprise light hydrocarbon, heavy hydrocarbon, fuel oil, tar, lubricating oil, fatty oil, wax oil, soap and the like, and the oil generally exists in four forms of floating oil, dispersed oil, emulsified oil, dissolved oil and the like. The oily wastewater causes serious pollution and damage to water rings, biospheres, air rings and the like, harms human health and living environment, and the treatment of the oily wastewater is a problem which is urgently needed to be solved at present, has important significance for human survival and social sustainable development, and can solve the harm of the oily wastewater.
After the sewage is treated, the sewage can be recycled, and the consumption of water resources is reduced for the production of China. The water treatment technology utilizes related technical means to purify sewage so that the sewage can be continuously used, so that the sewage treatment is extremely important.
Oil pollutants can form an oil film on the water surface to isolate the atmosphere and the water surface, so that the oxygen-enriched condition of the water body is destroyed, and the reduction of dissolved oxygen in the water can cause the death of plankton in the water body due to oxygen deficiency; the photosynthesis of aquatic plants such as algae can be limited, the self-purification function of the water body is influenced, and even the water quality is deteriorated and smelly; aquatic animals and plants such as fish, shrimp, shellfish, etc. are polluted by oily wastewater and will become odorous; toxic and harmful substances are enriched by fishes, shellfishes and the like, and can harm human health through a food chain; the oil spills are stuck on the body surface of the birds, and the birds lose flight ability and even die; animals drink oily wastewater and may be infected with fatal diseases; the accumulated oil on the surface of the body of water may also burn creating safety issues. The oil pollutants can also be attached to the surface of soil particles to form an oil film in the soil, so that air is difficult to penetrate, the normal metabolism of the soil and microorganisms in the soil is damaged, and the normal growth of crops is influenced. The concentration of oily wastewater in the biological treatment system exceeds the standard, the normal metabolism of activated sludge and biological membranes can be influenced, and the quality of effluent water is difficult to ensure.
Disclosure of Invention
The invention aims to solve the technical problem of providing a clarification treatment method for industrial oily wastewater, which has the advantages of simple steps, stable and efficient treatment effect and low cost.
In order to solve the technical problem, the invention provides a clarification treatment method of industrial oily wastewater, which comprises the following steps:
(1) putting the oily wastewater into a container, and adding micron-sized calcium oxide particles, wherein the proportion of the oily wastewater to the calcium oxide is that 0.5-2.2g of calcium oxide is added into every 15-15mL of the oily wastewater;
(2) the temperature in the container is controlled to be 50-80 ℃, and the stirring is carried out for 12 hours at the rotating speed of 100-;
(3) adding porous alumina particles into the container, and continuously stirring for 4 hours to obtain a mixed solution, wherein the addition amount of the calcium oxide is 1.0-2.0g per 15-15mL of oily wastewater;
(4) transferring the mixed solution into a centrifuge for centrifugation for 3min, wherein the centrifugation rotation speed is 800-;
(5) and adding sulfuric acid with the pH value of 2 into the filtrate to adjust the pH value of the filtrate to be neutral, and performing suction filtration again to obtain a clear liquid phase.
The invention has the advantages that: the invention adopts environment-friendly reagent micron-sized calcium oxide particles to carry out lipolysis on long-chain molecules in grease, simultaneously utilizes the large specific surface area and high adsorption energy of the micron-sized calcium oxide particles and porous alumina particles to carry out adsorption and precipitation on organic molecules, and carries out centrifugal separation; and then further adjusting the pH value to be neutral by using dilute sulfuric acid, generating calcium sulfate particles by using excessive calcium ions, further absorbing a little organic molecules remained in the solution by using the generated calcium sulfate particles, and filtering to remove calcium sulfate emulsion particles so as to ensure that the sample meets the requirements of clarification and environmental protection discharge so as to protect water, soil and ecological environment.
Detailed Description
The first embodiment is as follows:
a clarification treatment method of industrial oily wastewater comprises the following steps:
(1) placing 22.0mL of oily wastewater into a round-bottom flask, adding 0.5266g of micron-sized calcium oxide particles, and placing a stirrer;
(2) placing the round-bottom flask in a magnetic stirrer, heating and stirring for 12h, controlling the temperature in the round-bottom flask to be 50 ℃, and the stirring speed to be 100-;
(3) adding 1.0161g of porous alumina particles into the round-bottom flask and continuously stirring for 4 hours to obtain a mixed solution;
(4) transferring the mixed solution into a centrifuge for centrifugation for 3min, wherein the centrifugation speed is 800-;
(5) and adding sulfuric acid with the pH value of 2 into the filtrate to adjust the pH value of the filtrate to 7, and performing suction filtration again to obtain a clear liquid phase.
Example two:
a clarification treatment method of industrial oily wastewater comprises the following steps:
(1) placing 20.0mL of oily wastewater into a round-bottom flask, adding 1.0126g of micron-sized calcium oxide particles, and placing a stirrer;
(2) placing the round-bottom flask in a magnetic stirrer, heating and stirring for 12h, controlling the temperature in the round-bottom flask to be 60 ℃, and the stirring speed to be 100-;
(3) adding 1.0161g of porous alumina particles into the round-bottom flask and continuously stirring for 4 hours to obtain a mixed solution;
(4) transferring the mixed solution into a centrifuge for centrifugation for 3min, wherein the centrifugation speed is 800-;
(5) and adding sulfuric acid with the pH value of 2 into the filtrate to adjust the pH value of the filtrate to 7, and performing suction filtration again to obtain a clear liquid phase.
Example three:
a clarification treatment method of industrial oily wastewater comprises the following steps:
(1) placing 18.0mL of oily wastewater into a round-bottom flask, adding 2.0048g of micron-sized calcium oxide particles, and placing a stirrer;
(2) placing the round-bottom flask in a magnetic stirrer, heating and stirring for 12h, controlling the temperature in the round-bottom flask to be 65 ℃, and the stirring speed to be 100-;
(3) adding 1.0345g of porous alumina particles into the round-bottom flask and continuously stirring for 4 hours to obtain a mixed solution;
(4) transferring the mixed solution into a centrifuge for centrifugation for 3min, wherein the centrifugation speed is 800-;
(5) and adding sulfuric acid with the pH value of 2 into the filtrate to adjust the pH value of the filtrate to 7, and performing suction filtration again to obtain a clear liquid phase.
Claims (1)
1. A clarification treatment method for industrial oily wastewater is characterized by comprising the following steps:
(1) putting the oily wastewater into a container, and adding micron-sized calcium oxide particles, wherein the proportion of the oily wastewater to the calcium oxide is that 0.5-2.2g of calcium oxide is added into every 15-15mL of the oily wastewater;
(2) the temperature in the container is controlled to be 50-80 ℃, and the stirring is carried out for 12 hours at the rotating speed of 100-;
(3) adding porous alumina particles into the container, and continuously stirring for 4 hours to obtain a mixed solution, wherein the addition amount of the calcium oxide is 1.0-2.0g per 15-15mL of oily wastewater;
(4) transferring the mixed solution into a centrifuge for centrifugation for 3min, wherein the centrifugation rotation speed is 800-;
(5) and adding sulfuric acid with the pH value of 2 into the filtrate to adjust the pH value of the filtrate to be neutral, and performing suction filtration again to obtain a clear liquid phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210075099.6A CN114394693A (en) | 2022-01-22 | 2022-01-22 | Clarification treatment method for industrial oily wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210075099.6A CN114394693A (en) | 2022-01-22 | 2022-01-22 | Clarification treatment method for industrial oily wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114394693A true CN114394693A (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210075099.6A Pending CN114394693A (en) | 2022-01-22 | 2022-01-22 | Clarification treatment method for industrial oily wastewater |
Country Status (1)
| Country | Link |
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| CN (1) | CN114394693A (en) |
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-
2022
- 2022-01-22 CN CN202210075099.6A patent/CN114394693A/en active Pending
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Application publication date: 20220426 |