Coalbed methane waste water treatment method

Abstract

The invention discloses a coalbed methane waste water treatment method. The coalbed methane waste water treatment method comprises carrying out homogenization on coalbed methane waste water by a waste water adjustment tank, feeding the treated waste water to an integrated high-grade oxidation reactor, carrying out fast oxidation and flocculation, carrying out pressurization on the supernatant by a transfer pump, feeding the supernatant into a mechanical filter, removing suspended matters produced by the integrated high-grade oxidation reactor, and carrying out special separation to remove soluble salts so that standard discharge is realized. The coalbed methane waste water treatment method utilizes the integrated high-grade oxidation reactor and the mechanical filter to realize pretreatment so that organic matters, suspended matters and metal ions in the waste water are reduced. The coalbed methane waste water treatment method utilizes the special-efficacy ion separator to reduce soluble salt content of water so that product water quality reaches the standard. The coalbed methane waste water treatment method realizes combination of a high-grade oxidation technology and a special-efficacy ion separation technology and utilizes the combined technologies in coalbed methane waste water treatment, is free of any chemical agents in treatment, has a low investment cost, good product water quality and operation simpleness, is suitable for treatment on most of coalbed methane waste water in field and is a novel excellent eco-friendly coalbed methane waste water treatment method.

Description

technical field [0001] The invention relates to sewage treatment technology, in particular to a treatment method for coalbed methane wastewater. Background technique [0002] my country is rich in coalbed methane resources. Coalbed methane refers to the natural gas existing in coal seams, which consists of 90%~99% CH 4 and small amounts of other gases. Coalbed methane wastewater is produced during the mining process of coalbed methane. During the mining process of coalbed methane, water drainage and pressure reduction measures are usually taken to reduce the static pressure in the coal seam. This part of the water production is generally large. If it can be fully utilized, it is a precious water resource. , if the waste water is discharged into rivers, underground or irrigated farmland, it will pollute groundwater and affect the lives of local people. Therefore, such wastewater must be treated to ensure efficient and economical development and utilization of coalbed meth...

AI Technical Summary

Problems solved by technology

[0011] (3) Due to the fracturing fluid, there will be excessive organic matter in wastewater

[0012] (4) There is a problem of excessive heavy metal ions

The disadvantage is that the start-up period is long and the processing facilities occupy a large area

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