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Oil field wastewater treatment process

A technology of oilfield sewage and treatment process, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, mining wastewater treatment, etc., can solve the problem of low treatment efficiency, achieve improved treatment efficiency, effective degradation, good The effect of degradation function

Inactive Publication Date: 2014-06-25
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

This patented technology improves the way we clean up wastewater from an offshore drilling rig's wellbores during exploration or other activities by optimizing both the use of oily liquids (oil) with high levels of suspended soluble organic compounds called bacteria), reducing nitrogen emissions into surface waters, increasing biodegradability, create a safer environment than traditional methods while also producing higher value products like fertility boosters.

Problems solved by technology

This patented technical problem addressed in the patents relates to improving the efficiency at treating oily or highly contaminating waters from different industries such as mineral processing operations that produce these liquors containing harmful substances like hydrocarbons and suspended solid particles.

Method used

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  • Oil field wastewater treatment process

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Embodiment 1

[0045] Such as figure 1As shown, the oilfield sewage is added to the buffer pool, and after the adjustment, cooling, and oil separation of the buffer pool, the oil floating on the liquid surface can be collected by the oil skimmer installed on the pool surface, and the sewage stays in the buffer pool The time is 16 minutes. Turn on the power supply of the lift pump, and the effluent from the buffer pool enters the cooling tower through the lift pump for cooling, cooling the sewage to 28-32°C, providing good temperature conditions for the subsequent biochemical treatment and ensuring the treatment effect.

[0046] Pass the cooled sewage into the first-level anoxic tank. Under the condition of anoxic, the acidified sludge is hydrolyzed and fully mixed with the wastewater, and the extracellular enzymes released by the fermentation bacteria are used to break the chain, so that the refractory macromolecules in the wastewater The organic matter is thoroughly digested into easily de...

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Abstract

The invention discloses an oil field wastewater treatment process which comprises the steps: firstly, adding oil field wastewater in a buffer pond, adding the oil field wastewater in a negative pressure cooling tower through a lifting pump for being cooled, sequentially carrying out hydrolytic acidification in a primary anoxia pond, nitration treatment in a primary aerobiotic pond and precipitation in a precipitation pond on the cooled wastewater, adding the wastewater in an MBR, discharging the wastewater when reaching the standard, wherein microorganisms adopted in processes of hydrolytic acidification treatment, nitration treatment and denitrification treatment comprise brevibacterium flavum, bacillus cereus, pseudomonas stutzeri and brevibacillus brevis. According to the oil field wastewater treatment process, through improvement of an oil field wastewater treatment system and process, the oil field wastewater treatment efficiency can be further increased, and the effluent quality is improved; the two selected strains have a synergic effect when being used for commonly treating the oil field wastewater, and are capable of effectively degrading pollutants in the oil field wastewater.

Description

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Claims

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Application Information

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Owner CHANGZHOU UNIV
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