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Sewage adsorbent based on oily dross and usage thereof

An adsorbent and scum technology, which is applied in the fields of adsorbed water/sewage treatment, other chemical processes, mining wastewater treatment, etc., can solve the problems of difficult oily scum treatment, and achieves low production cost, simple preparation method and wide applicability. Effect

Inactive Publication Date: 2016-07-13
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of difficult treatment of oily scum, and propose a method for preparing an adsorbent by using oily scum and applying the prepared adsorbent to the treatment of oil production sewage

Method used

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  • Sewage adsorbent based on oily dross and usage thereof

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Effect test

Embodiment 1

[0019] The preparation method of the sewage adsorbent based on oily scum provided in this embodiment is as follows: figure 1 Shown: The dehydration scum of the flotation tank of a sewage treatment plant in an oil field joint station is the first choice, and the water content is 85.4%, and the oil content is 8.1%. Add a dehydration treatment agent to the above-mentioned oily scum at a mass ratio of 2:1, and mix and stir Dry to obtain solid scum, and the dehydrating agent is a mixture of sulfate agents and activated carbon powder. The solid scum is pyrolyzed at 650°C for 2 hours, nitrogen protection is passed during the pyrolysis process, and the non-condensable gas, oil and water separated during the pyrolysis are recycled for recycling. After the reaction, the solid residue is ground and sieved, rinsed with acid and lye to remove oxides and ash, and then dried to obtain the adsorbent.

[0020] The sewage adsorbent prepared in this example adopts the static adsorption method w...

Embodiment 2

[0022] The preparation method of the sewage adsorbent based on oily scum provided in this embodiment is as follows: figure 1 Shown: The dehydration scum of a sewage treatment station of an oil refinery is the first choice, and the water content is 86.3%, and the oil content is 7.7%. Add a dehydration treatment agent to the above oily scum at a mass ratio of 2:1, mix and stir, and then dry to prepare Get solid scum. The solid scum is pyrolyzed at 600°C for 3 hours, nitrogen protection is passed during the pyrolysis process, and the non-condensable gas, oil and water separated during pyrolysis are recycled for recycling. After the reaction, the solid residue is ground and sieved, rinsed with inorganic acid solution and inorganic alkali solution to remove oxides and ash, and then dried to obtain the adsorbent.

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Abstract

The invention provides a sewage adsorbent based on oily dross. The sewage adsorbent is prepared through the following steps: (1) uniformly mixing oily dross and a dehydrating agent and then drying, thereby acquiring solid dross; (2) performing pyrolysis on the solid dross at 550-650 DEG C for 1-3 hours, thereby preparing solid residues; and (3) grinding and sieving the solid residues, and then removing oxides and ash components from the solid residues, thereby acquiring the sewage adsorbent. The sewage adsorbent can be used for removing COD and petroleum from the oil extraction sewage. The sewage adsorbent provided by the invention not only can be used for harmlessly disposing the oily dross but also can supply an absorbing material for disposing oil extraction sewage and can realize the circulating utilization of 'waste-resource-product' of an oil field united station.

Description

technical field [0001] The invention provides a sewage adsorbent, in particular to a sewage adsorbent prepared by using oil-containing scum, and the adsorbent can be applied to the treatment of oil production sewage. Background technique [0002] Oily scum is produced in the flotation tank of the sewage treatment plant of the oilfield union station, usually contains a large amount of hydrocarbons, has high viscosity and poor fluidity, if it is discharged directly, it will occupy a large amount of land and cause serious damage to the surrounding soil, water and air. pollution, endangering human health. The treatment of oily scum has always been a difficult problem that plagues the environmental protection work of the sewage treatment plant of Union Station. [0003] The current treatment processes for oily scum mainly include plate and frame filter press or incineration after centrifugal dehydration, landfill after dehydration and direct storage. Oily scum usually has a hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22C02F1/28C02F103/10
CPCB01J20/22B01J2220/4887C02F1/28C02F2103/10
Inventor 汤超赵林邓皓王蓉沙谢水祥张明栋马超马东
Owner YANGTZE UNIVERSITY
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