Oily wastewater adsorbent and preparation method thereof

An adsorbent and wastewater technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of difficult separation, small manganese dioxide particles, limited use range, etc., to achieve enhanced adsorption effect, Simple operation, improve the effect of adsorption type and adsorption strength

Inactive Publication Date: 2018-04-24
安徽铭能保温科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fine particles of manganese dioxide are difficult to separate from water, which limits its application range.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] A kind of oily wastewater adsorbent, prepared by the following method:

[0020] (1) Wash and dry the rapeseed stalks, put them into a pulverizer and pass them through a 120-mesh sieve to obtain straw powder for later use;

[0021] (2) Mix fly ash, calcium hydroxide and straw powder according to the mass ratio of 5:1:14, then immerse in absolute ethanol, and then use a ball mill to grind the mixture for 90 minutes. After completion, filter it out and send it to the dryer Drying, put the dry material in a high-temperature furnace and heat it up to 230°C, sinter for 25 minutes, then heat up to 380°C, sinter for 10 minutes, take it out after cooling, and crush it through a 150-mesh sieve for use;

[0022] (3) Put the magnesia into a high-temperature furnace, bake it at 500°C for 60 minutes, take it out after cooling, crush it through a 30-mesh sieve, put it into clean water and boil it for 30 minutes, cool to room temperature and filter to remove floating ash and impurities...

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Abstract

The invention discloses an oily wastewater adsorbent and a preparation method thereof. The oily wastewater adsorbent is prepared from coal ash, rape straws, calcium hydroxide, magnesia, ethyl orthosilicate, ferroferric oxide and the like. The straws are mixed with the coal ash, by the aid of loose porous excellent carrier performances, the magnesia is modified to prepare particles, the finished adsorbent particles have the advantages of light weight, high chemical stability and the like, environmental pollution is avoided, the oily wastewater adsorbent is simple to operate, low in cost and recyclable, the concentration of residual COD (chemical oxygen demand) and the like in wastewater meets national emission requirements after adsorption treatment is performed on the oily wastewater, andthe oily wastewater adsorbent is suitable for large-scale oily wastewater treatment.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an oily wastewater adsorbent and a preparation method thereof. Background technique [0002] Oily wastewater is a common industrial wastewater. Petroleum exploration, refining, petrochemical, mechanical processing and other industries produce a large amount of oily wastewater every year, which has the characteristics of many types of pollutants, high concentration, difficult biodegradation and high residue, and great harm to the environment. The stench seriously pollutes the environment and endangers human health. At present, due to the large amount of wastewater produced by the crude oil industry and its complex composition, especially its high concentration of phenols, sulfides, mercaptans, naphthenic acids and other substances, the odor and pollution are extremely serious. Oily wastewater will leave more difficult-to-degrade substances, which are the most harmful to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F1/52C02F1/56
CPCB01J20/041B01J20/06B01J20/103B01J20/24B01J20/28009B01J20/28016C02F1/281C02F1/286C02F1/5236C02F1/5263C02F1/56
Inventor 杨华亮
Owner 安徽铭能保温科技有限公司
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