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Coagulant for treating polysulfonate slurry sewage

A coagulant and mud technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problem of low chroma treatment efficiency, achieve the effect of improving chroma removal rate and accelerating flocculation

Inactive Publication Date: 2012-11-21
成都凯迈环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to overcome existing coagulant to polysulfide mud sewage COD Cr , the problem of low chroma treatment efficiency, provide a coagulant for treating polysulfide slurry sewage, adopt the coagulant for treating polysulfide slurry sewage provided by the present invention to treat polysulfide slurry sewage, and the treated sewage will be used in other various If the indicators meet the standards, the COD Cr The removal rate is effectively improved, and the chroma is significantly improved

Method used

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  • Coagulant for treating polysulfonate slurry sewage

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Select I1L of polysulfide mud sewage sample from drilling in a certain area of ​​Sichuan to analyze the COD in the sewage Cr And measure chromaticity with dilution multiple method, add the coagulant that the processing polysulfide mud sewage provided by the present invention is processed in order then, wherein calcium hydroxide add-on is 4g, and ferrous sulfate add-on is 11.5g, analysis and treatment after sewage.

Embodiment 2

[0019] Select II1L of polysulfide mud sewage sample from drilling in a certain area of ​​Sichuan to analyze the COD in the sewage Cr And measure chromaticity with dilution multiple method, then add the coagulant that the present invention provides to process polysulfide mud sewage in order and process it, wherein calcium hydroxide add-on is 5g, and ferrous sulfate add-on is 11.5g, analyzes Treated sewage.

Embodiment 3

[0021] Select III1L of polysulfide mud sewage sample from a certain area in Sichuan to analyze COD in sewage Cr And measure chromaticity with dilution multiple method, then add the coagulant that the present invention provides in order to process polysulfide mud sewage and process it, wherein calcium hydroxide add-on is 4g, ferrous sulfate add-on is 8.7g, then Then, 50 mg of polyacrylamide was added to the sewage treated by the above treatment steps, and the treated sewage was analyzed.

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Abstract

The invention discloses a coagulant for treating polysulfonate slurry sewage. The coagulant for treating the polysulfonate slurry sewage provided by the invention comprises calcium hydroxide or calcium oxide, and ferric sulfate or ferrous sulfate. The coagulant for treating the polysulfonate slurry sewage provided by the invention is used for treating the sewage containing polysulfonate slurry; the CODCr (Chemical Oxygen Demand) of the treated sewage is reduced by 70-85 percent; the chrominance is determined by using a dilution multiple method and can be reduced to 180-220; the subsequent physicochemical treatment and biochemical treatment can more easily reach standards; and the treatment cost is low.

Description

technical field [0001] The invention relates to a coagulant for treating sewage, in particular to a coagulant for treating drilling sewage rich in sulfonated mud sewage. Background technique [0002] In the process of drilling in oil and gas fields, the wastewater formed due to the loss of mud during tripping operations, the leakage of the mud circulation system, and the flushing of mud and oil on ground equipment and drilling tools is called drilling wastewater. In the drilling process, especially in the deep well drilling process, in order to achieve safe and fast drilling, polysulfonate mud that can prevent collapse, high temperature and salt is generally used. Since this type of drilling fluid system contains sulfonated phenolic resin, sulfonated baked gum, sulfonated tannin and other salt-resistant and temperature-resistant synthetic treatment agents, surfactants, etc., the resulting drilling wastewater contains a large amount of suspended solids and oil Class substanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 田庆华杨斌中刘淘王维黎鹏钟润之任永杰
Owner 成都凯迈环保技术有限公司
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