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Oxygen release material added with oily sludge pyrolysis residues

A sludge and pyrolysis technology, applied in aerobic process treatment, sustainable biological treatment, other chemical processes, etc., can solve the problems of low average oxygen release rate of oxygen-releasing materials, changing the living environment of microorganisms, unfavorable activation of indigenous microorganisms, etc. , to achieve the effect of reducing the consumption of natural resources, increasing the rate of oxygen release, and improving the performance of oxygen release

Active Publication Date: 2013-10-16
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

However, in the prior art, the initial oxygen release amount of oxygen-releasing materials is large, which can drastically change the living environment of microorganisms and is not conducive to the activation of indigenous microorganisms; adding nitrogen and phosphorus to oxygen-releasing materials has the risk of secondary pollution to groundwater; oxygen-releasing materials The average oxygen release rate is low, and the oxygen release period is short. Generally, after 2-6 months of operation at the site, it is necessary to re-inject or replace the oxygen-releasing material

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  • Oxygen release material added with oily sludge pyrolysis residues
  • Oxygen release material added with oily sludge pyrolysis residues
  • Oxygen release material added with oily sludge pyrolysis residues

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Embodiment Construction

[0018] The preferred solutions of the present invention will be specifically described below in conjunction with examples, which are not intended to limit the protection scope of the present invention.

[0019] (1) Material

[0020] Calcium peroxide: industrial grade, purity 70%, the main impurity is Ca(OH) 2 .

[0021] Oily sludge pyrolysis residue: Oily sludge includes tank bottom sludge, scum, waste white clay, ground crude oil, oilfield sewage flocculation dewatered sludge, centrifugal dewatered sludge and its storage and drying produced in the process of oilfield refining, chemical gathering and transportation Sludge, etc., prepared by pyrolysis of oily sludge at 600°C, has a certain mechanical strength, is in the form of loose large particles, and is broken to less than 2mm. C content 30%-50%, Al 2 o 3 Content 15%-30%. Toxicity leaching experiments show that the content of heavy metals and organic pollutants is far below the standard for hazardous solid waste.

[0...

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Abstract

The invention provides an oxygen release material added with oily sludge pyrolysis residues, comprising the following components in parts by weight: 21-50 wt percent of calcium peroxide, 1-20 wt percent of the oily sludge pyrolysis residues and the balance of coagulant. According to the oxygen release material added with the oily sludge pyrolysis residues disclosed by the invention, in the initial stage of oxygen release, the oxygen release velocity of the oxygen release material is lowered, so that the oxygen release material is beneficial to activating aerobic indigenous microorganisms by being applied to groundwater pollution situ strenthening bioremediation; and after entering a stable oxygen release stage, the oxygen release velocity of the oxygen release material is high, and the oxygen release period is long. Meanwhile, bentonite is replaced by adding the oily sludge pyrolysis residues in the oxygen release material, so that consumption of natural resource can be reduced, and a resourced utilization mode is supplied for oily sludge.

Description

technical field [0001] The invention relates to the field of groundwater pollution restoration, in particular to an oxygen-releasing material prepared by adding oily sludge pyrolysis residues for strengthening groundwater in-situ aerobic biodegradation. Background technique [0002] For the remediation of groundwater pollution on site, in-situ bioremediation technology is feasible, effective and superior. Among the various existing contaminated site remediation technologies, in-situ bioremediation technology has the characteristics of low investment, good benefit, and easy application. The use of oxygen-releasing materials containing oxygen-releasing compounds for bioremediation technology to solve groundwater pollution is a common method for the remediation of groundwater pollution. [0003] The oxygen release rate and cycle of oxygen release materials are the key factors that determine the success or failure of restoration and the cost of restoration. However, in the prio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20C02F3/02C04B28/04
CPCY02W10/10
Inventor 刘玉龙刘光全吴百春陈宏坤陈梅梅张华张锁雷范俊欣刘鹏宋佳宇刘译阳
Owner BC P INC CHINA NAT PETROLEUM CORP
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