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Natural gas drilling wastewater treatment process

A technology for drilling wastewater and treatment process, which is applied in mining wastewater treatment, multi-stage water treatment, water/sewage treatment, etc. It can solve the problems of high COD value, high Clˉ content and single treatment method in wastewater, and achieve less pollution and better operation The effect of low cost and easy operation

Inactive Publication Date: 2019-01-04
江苏立业环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, the treatment method for oil and gas drilling wastewater is relatively simple, the treatment effect is not good, the decolorization ability is poor, the COD value of the treated wastewater is still high, and the Clˉ content is still high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: a kind of natural gas drilling wastewater treatment process comprises the following steps:

[0022] (1) Collect natural gas drilling wastewater into the regulating pool;

[0023] (2) Flocculation and sedimentation

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Abstract

Disclosed is a natural gas drilling wastewater treatment process. The process comprises the following steps of (1) collection of natural gas drilling wastewater into a regulating pool; (2) flocculation sedimentation; (3) zeolite filtration; (4) filtering membrane filtration; (5) floccule treatment. In the third step, zeolite is immersed in a ferric chloride solution at 200-250 DEG C for 30-40 minutes, wherein the immersion volume ratio of the zeolite to the ferric chloride solution is 1:10. The natural gas drilling wastewater treatment process has the advantages that the space occupied by equipment is small, the structure is simple, the operation is convenient, the wastewater treatment effect is good, the operation cost is low, and meanwhile little pollution is caused to the environment.

Description

technical field [0001] The invention belongs to the related field of wastewater treatment, and in particular relates to a natural gas drilling wastewater treatment process. Background technique [0002] Non-reusable waste fluids generated during oil and gas development, including drilling waste water, acidizing waste liquid and fracturing waste liquid. [0003] Drilling wastewater refers to the wastewater generated during the drilling process, including discarded mud; mud loss and cuttings brought out during drilling and drilling operations; flushing fluid for ground equipment and drilling tools; domestic sewage at the well site, etc. The composition is very complex , the main pollutants are suspended solids, heavy metals, oil, phenol, sulfide, etc., and the composition and concentration of these are different in each operation stage. The water quality of drilling wastewater is characterized by high content of suspended solids, high chroma, high COD value, and refractory de...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F103/10
CPCC02F1/001C02F1/5236C02F1/56C02F1/66C02F9/00C02F2001/007C02F2103/10C02F2301/08
Inventor 付广永王建业
Owner 江苏立业环境科技有限公司
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