Method for preparing ceramsite filter material from oily sludge

A technology for ceramsite filter material and sludge, which is applied in separation methods, ceramic material production, chemical instruments and methods, etc., to achieve the effects of good environmental protection significance and the spirit of circular economy, cheap and easy-to-obtain raw materials, and short preparation process steps.

Active Publication Date: 2022-06-14
定边县冠博环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The task of the present invention is to provide a method for preparing ceramsite filter material from oily sludge, which can effectively solve the secondary pollution and safety problems caused by volatile organic pollutants in the sludge, and can make full use of the oil in the sludge It can avoid the pollution caused by the volatilization of volatile organic compounds during the disposal process and well reflect the value of resource utilization, and the preparation process of this method is short, the raw materials used are cheap and easy to obtain, and it is beneficial to avoid the loss of high oily sludge And soil and water system to reflect good environmental protection significance, the ceramsite filter material prepared by this method can reflect the wide range of use and excellent filtration effect

Method used

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  • Method for preparing ceramsite filter material from oily sludge
  • Method for preparing ceramsite filter material from oily sludge
  • Method for preparing ceramsite filter material from oily sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A) prepare iron-carrying sludge, respectively weigh hematite powder and sludge (oily sludge produced in crude oil mining, the same below) by mass ratio 4:100, mix and stir to obtain iron-carrying sludge;

[0024] B) preparing de-volatile iron-carrying sludge, introducing the iron-carrying sludge obtained in step A) into a low-temperature plasma reaction tank and continuously exposing air from the bottom of the low-temperature plasma reaction tank (ie, the bottom of the reaction tank), that is, Air was continuously introduced into the tank from the bottom of the low-temperature plasma reaction tank to aerate the iron-carrying sludge in the tank, and at the same time, the iron-carrying sludge in the low-temperature plasma reaction tank was irradiated with low-temperature plasma for 1.5 hours (that is, the irradiation time 1.5h), the plasma action voltage, that is, the low temperature plasma action voltage, is 5kV, and the devolatile active iron-carrying sludge is obtained;...

Embodiment 2

[0043] Only change the mass ratio of hematite powder and sludge in step A) to 6:100; change the low temperature plasma irradiation time in step B) to 1 h, and change the low temperature plasma action voltage to 27.5kV; The mass ratio of calcium oxide powder and perlite powder in step C) was changed to 15:100; The drying temperature was changed to 125°C, the drying time was changed to 7h, and the sintering temperature and time were changed to 1100°C and 20min, respectively. The rest are the same as the description of Example 1.

[0044] The practical application example of the ceramsite filter material obtained in this embodiment to the filtration of landfill leachate is as follows:

[0045] The source of landfill leachate is the same as that in Example 1.

[0046] Landfill leachate filtration test, COD concentration detection and calculation of COD removal rate, ammonia nitrogen concentration detection and ammonia nitrogen removal rate calculation, total phosphorus concentra...

Embodiment 3

[0052] Only the mass ratio of hematite powder and oil sludge in step A) was changed to 2:100; the irradiation time of low temperature plasma in step B) was changed to 1.5h, and the action voltage of low temperature plasma was changed to 50kV; The mass ratio of calcium oxide powder and perlite powder in step C) was changed to 10:100; the mass ratio of calcium-doped perlite powder and devolatile active iron-loaded sludge in step D) was changed to 20:100, and The drying temperature was changed to 150 °C and the drying time was changed to 2 h, and the sintering temperature and time were changed to 1200 °C and 10 min, respectively. The rest are the same as the description of Example 1.

[0053] The practical application example of the ceramsite filter material obtained in this embodiment to the filtration of landfill leachate is as follows:

[0054] The source of landfill leachate is the same as that in Example 1.

[0055] Landfill leachate filtration test, COD concentration dete...

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Abstract

The invention discloses a method for preparing ceramsite filter material by using oily sludge, which belongs to the technical field of waste harmless treatment in crude oil exploitation. Steps: Weigh the hematite powder and oil sludge according to the mass ratio, mix and stir evenly to obtain the iron-loaded oil sludge; introduce the iron-loaded oil sludge into the plasma reaction tank and continuously expose to air from the bottom of the plasma reaction tank to cool the plasma The iron-carrying oil sludge in the reaction tank is irradiated with low-temperature plasma to obtain devolatile active iron-carrying oil sludge; respectively weigh calcium oxide powder and perlite powder according to the mass ratio, mix and stir evenly, and obtain calcium-doped perlite powder; Weigh calcium-doped perlite powder and devolatile active iron-carrying oil sludge respectively, mix and stir evenly to make ceramsite, then sequentially dry, sinter at high temperature, and then slowly cool to obtain ceramsite filter material. The oil and mud in the oil sludge can be fully utilized; the preparation process steps are short, cheap and easy to obtain; and the highly oily sludge is prevented from damaging soil and water systems.

Description

technical field [0001] The invention belongs to the technical field of harmless treatment of wastes in crude oil exploitation, and particularly relates to a method for preparing ceramsite filter material by using oil-containing sludge. Background technique [0002] The high oily sludge mentioned above refers to the sludge with an oil content of 16-60%. Crude oil needs to go through many links from extraction to processing, and a large amount of oily sludge will be produced. my country's petrochemical industry produces about 3 million tons of sludge each year. Because oily sludge contains aromatic hydrocarbons, pathogenic bacteria, heavy metals and radioactive elements, it has strong carcinogenicity and is harmful to human health, so it is called solid hazardous waste. If the oily sludge is directly landfilled or discharged without treatment, it will not only directly destroy the physical and chemical structure of the soil, but also easily transfer toxic pollutants to groun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/10B01J20/30B01D39/06C04B38/06C04B33/132C04B33/02C02F1/28C02F103/06C02F101/20C02F101/16
CPCB01J20/106B01J20/041B01J20/06B01J20/02B01D39/06C02F1/281C04B33/1321C04B33/02C04B38/009C04B38/0645B01J2220/4806B01J2220/4887C02F2103/06C02F2101/20C02F2101/16B01D2239/10C04B2235/3272C04B2235/3208C04B2235/3463Y02P40/60
Inventor 黄涛曹振兴杜晶宋东平刘龙飞张树文金俊勋周璐璐
Owner 定边县冠博环保科技有限公司
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