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Clarification treatment method for industrial oily wastewater

A technology for clarification and waste water treatment, applied in water/sewage treatment, adsorbed water/sewage treatment, water/sewage multi-stage treatment, etc., it can solve problems such as difficulty in guaranteeing effluent quality, affecting the normal metabolism of activated sludge and biofilm, etc. To achieve the effect of protecting soil and water and ecological environment

Pending Publication Date: 2022-04-26
ANHUI SCI & TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The concentration of oily wastewater in the biological treatment system exceeds the standard, which will affect the normal metabolism of activated sludge and biofilm, and the quality of effluent water is difficult to guarantee

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A clarification treatment method for industrial oily wastewater, comprising the following steps:

[0015] (1) Take 22.0 mL of oily waste water and place it in a round bottom flask, add 0.5266 g of micron-sized calcium oxide particles, and put it into a stirring bar;

[0016] (2) Place the round-bottomed flask in a magnetic stirrer and stir for 12 hours while heating, control the temperature in the round-bottomed flask to be 50°C, and the stirring speed to be 100-150r / min;

[0017] (3) Add 1.0161g of porous alumina particles to the round bottom flask and continue to stir for 4h to obtain a mixed solution;

[0018] (4) Transfer the mixed solution to a centrifuge for 3 minutes, the centrifugal speed is 800-1000r / min, then take the supernatant and filter it with suction to obtain the filtrate, and the pH value of the filtrate is 11 now;

[0019] (5) adding sulfuric acid with a pH of 2 to the filtrate to adjust the pH of the filtrate to 7, and then suctioning again to final...

Embodiment 2

[0021] A clarification treatment method for industrial oily wastewater, comprising the following steps:

[0022] (1) Take 20.0 mL of oily waste water and place it in a round bottom flask, add 1.0126 g of micron-sized calcium oxide particles, and put it into a stirring bar;

[0023] (2) Place the round bottom flask in a magnetic stirrer and stir for 12 hours while heating, control the temperature in the round bottom flask to be 60°C, and the stirring speed is 100-150r / min;

[0024] (3) Add 1.0161g of porous alumina particles to the round bottom flask and continue to stir for 4h to obtain a mixed solution;

[0025] (4) Transfer the mixed solution to a centrifuge for 3 minutes, the centrifugal speed is 800-1000r / min, then take the supernatant and filter it with suction to obtain the filtrate, and the pH value of the filtrate is 11 now;

[0026] (5) adding sulfuric acid with a pH of 2 to the filtrate to adjust the pH of the filtrate to 7, and then suctioning again to finally obta...

Embodiment 3

[0028] A clarification treatment method for industrial oily wastewater, comprising the following steps:

[0029] (1) Take 18.0 mL of oily waste water and place it in a round bottom flask, add 2.0048 g of micron-sized calcium oxide particles, and put it into a stirring bar;

[0030] (2) Place the round-bottomed flask in a magnetic stirrer and stir for 12 hours while heating, control the temperature in the round-bottomed flask to be 65°C, and the stirring speed is 100-150r / min;

[0031] (3) Add 1.0345 g of porous alumina particles to the round bottom flask and continue to stir for 4 hours to obtain a mixed solution;

[0032] (4) Transfer the mixed solution to a centrifuge for 3 minutes, the centrifugal speed is 800-1000r / min, then take the supernatant and filter it with suction to obtain the filtrate, and the pH value of the filtrate is 11 now;

[0033] (5) adding sulfuric acid with a pH of 2 to the filtrate to adjust the pH of the filtrate to 7, and then suctioning again to fi...

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Abstract

A clarification treatment method for industrial oil-containing wastewater comprises the following steps that the oil-containing wastewater is placed in a container, micron-sized calcium oxide particles are added, and the proportion of the oil-containing wastewater to calcium oxide is that 0.5-2.2 g of calcium oxide is added into every 15-15 mL of the oil-containing wastewater; the temperature in the container is controlled to be 50-80 DEG C, and stirring is conducted for 12 h at the rotating speed of 100-150 r / min; adding porous alumina particles into the container, and continuously stirring for 4 hours to obtain a mixed solution, wherein 1.0-2.0 g of calcium oxide is added into every 15-15 mL of oily wastewater; transferring the mixed solution into a centrifugal machine to be centrifuged for 3 minutes at the centrifugal rotating speed of 800-1000 r / min, and then taking supernate and performing suction filtration to obtain filtrate; 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 finally obtain a clear liquid phase. The method is simple in step, stable and efficient in treatment effect and low in cost.

Description

technical field [0001] The invention relates to a clarification treatment method of industrial oily waste water. Background technique [0002] Oily wastewater has a wide range of sources, and its main components include light hydrocarbons, heavy hydrocarbons, fuel oil, tar, lubricating oil, fatty oil, wax grease, soap, etc. , dissolved oil and other four forms exist. Oily wastewater causes serious pollution and damage to the hydrosphere, biosphere, and atmosphere, endangering human health and the living environment. The treatment of oily wastewater is an urgent problem to be solved today. It is of great significance to human survival and sustainable social development. It can solve the problem of oily wastewater. Wastewater hazards. [0003] After the sewage is treated, it can be recycled to reduce the consumption of water resources for the production of our country. Water treatment technology uses relevant technical means to purify sewage so that it can be used continuou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/28C02F1/52C02F1/38C02F1/00C02F101/30
CPCC02F9/00C02F1/281C02F1/5236C02F1/38C02F1/00C02F2101/30
Inventor 汪徐春韦正兵姚鑫张雪梅周化光陈俊明张玉洋姚悦王桂玲
Owner ANHUI SCI & TECH UNIV
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