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Waste slurry conditioning agent system, and application method thereof

A technology for conditioning treatment and waste mud, which is used in biological sludge treatment, mining wastewater treatment, dewatering/drying/concentrating sludge treatment, etc.

Active Publication Date: 2016-05-25
XIAN HUANUO ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to reduce the organic pollution of waste mud, and to provide a waste mud conditioning and tempering agent system and its application method. It is characterized in that the following steps are adopted:

Method used

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  • Waste slurry conditioning agent system, and application method thereof

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Effect test

Embodiment 1

[0017] Add 500 mg / L of polyaluminum iron silicate to the waste mud spilled during oil field drilling in turn, and add 100 mg / L of oxidizing agent sodium ferrate after 30 seconds. After mixing for 20 minutes, add 0.2% surface-adhered Nut shell particles of microorganisms, mixed well. Then the mud mixture is processed with a screw stacker, and the residue obtained is used as a standardized well site construction roadbed.

[0018] Among them, the nut shell particles are soaked in the mixture of Pseudomonas fluorescens and Rhodotorula viscosus and then used after drying in a cool place. The composition of the bacterial solution is: add 10 6 / ml Pseudomonas fluorescens 2.5mL, add 10 6 Individual / ml Rhodotorula viscosus 1.5mL.

Embodiment 2

[0020] Others are the same as embodiment 1. The dosage of polyaluminum ferric silicate is 400mg / L. After 25 seconds, add the oxidant sodium ferrate 150mg / L. After mixing for 20 minutes, add 0.5% nut shell particles with microorganisms attached to the surface, and mix well. Then the mud mixture is processed with a screw stacker, and the residue obtained is used as a standardized well site construction roadbed.

[0021] Among them, the nut shell particles are soaked in the mixture of Pseudomonas fluorescens and Rhodotorula viscosus and then used after drying in a cool place. The composition of the bacterial solution is: add 10 8 / ml Pseudomonas fluorescens 2.0mL, add 10 8 Individual / ml Rhodotorula viscosus 1.0mL.

Embodiment 3

[0023] Others are the same as embodiment 1. The dosage of polyaluminum ferric silicate is 300mg / L. After 25 seconds, 200mg / L of sodium ferrate, an oxidizing agent, is added. After mixing for 15 minutes, add 0.3% nut shell particles with microorganisms attached to the surface, and mix well. Then the mud mixture is processed with a screw stacker, and the residue obtained is used as a standardized well site construction roadbed.

[0024] Among them, the nut shell particles are soaked in the mixture of Pseudomonas fluorescens and Rhodotorula viscosus and then used after drying in a cool place. The composition of the bacterial solution is: add 10 8 / ml Pseudomonas fluorescens 2.5mL, add 10 8 Individual / ml Rhodotorula viscosus 2.0mL.

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Abstract

The invention provides a waste slurry conditioning agent system, and an application method thereof. The application method comprises following steps: (1) waste slurry overflowing in oilfield drilling is subjected to mixing treatment with polysilicate aluminum ferric and oxidizing agent sodium ferrate (or potassium ferrate) for 10 to 20min, wherein the adding amount of polysilicate aluminum ferric is controlled to be 100 to 500mg / L, the adding amount of the oxidizing agent is controlled to be 50 to 200mg / L, and time interval of adding of polysilicate aluminum ferric and adding of the oxidizing agent is controlled to be 20 to 30s; (2) nut shell particles are added into an obtained mixed slurry for uniform mixing, wherein microorganisms are attached to the surfaces of the nut shell particles; (3) a stacked spiral sludge dewatering machine is used for treating an obtained sludge mixture; (4) filtrate obtained via filtration using the stacked spiral sludge dewatering machine is used for preparing new slurry used for drilling of the drilling crew; and (5) residue obtained via sedimentation is taken as a standard well site subgrade material.

Description

technical field [0001] The invention relates to a waste mud conditioning and tempering agent system and its use method. Specifically, the waste mud from the wellhead is mixed with polyaluminum iron silicate and an oxidant, and then the nut shell particles attached with microorganisms are added for stirring , and then put it into the screw stacker for processing, the water from the screw stacker is filtered and used to configure new mud, and the sinking residue is mud residue that can meet environmental protection requirements. Background technique [0002] At present, in the drilling process of oilfields, in order to ensure the drilling quality and increase the drilling speed, it is necessary to use mud with ingredients such as diluent, fluid loss reducer, and shale inhibitor. After the drilling operation is completed, these muds become waste muds with complex components, including not only high-molecular organic matter, oil, and high-concentration chloride ions, but also a ...

Claims

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Application Information

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IPC IPC(8): C02F11/02C02F11/06C02F11/14C02F103/10
Inventor 屈撑囤张峰
Owner XIAN HUANUO ENVIRONMENTAL PROTECTION CO LTD
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