Advanced treatment method for heavy alkylbenzene sulfonate (HABS) industrial wastewater

A technology of alkylbenzene sulfonate and production wastewater, applied in the field of water treatment, can solve problems such as unsatisfactory effect, and achieve the effects of easy automatic control, simple operation and low treatment cost
CN101921031AInactive Publication Date: 2010-12-22BEIJING UNIV OF TECH +2
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF TECH
Publication Date
2010-12-22
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses an advanced treatment method for heavy alkylbenzene sulfonate (HABS) industrial wastewater, belonging to the technical field of water treatment and comprising the following steps: regulating the pH value of the HABS industrial wastewater to be 2-4 firstly, feeding the HABS industrial wastewater after pH value regulation in a container, and putting at least two polar plates in the container, wherein the two polar plates are respectively connected with the positive and negative poles of a DC regulated power supply; regulating the current intensity of the DC regulated power supply to 2-10A, and processing for 2-10min, wherein the used polar plates are iron polar plates; standing and settling for 30min, taking supernate, regulating the pH value of the supernate to be 7.5-9.5, pouring a composite water treatment agent based on the mass ratio of 1-2g / L, stirring, and standing and settling for 1h, wherein the composite water treatment agent is prepared by compounding diatomite with aluminum polychloride, ferrous sulphate heptahydrate, aluminum sulfate aluminium sulfate octadecahydrate or polymerized aluminium ferric sulfate based on the mass ratio of 3:1-6. the advanced treatment method in the invention lowers COD index, has simple operation and is easy to realize automatic control, and the generated sludge can be used as an auxiliary material for subgrade and brickmaking, and has relative low cost.
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Description

technical field

[0001] The invention belongs to the technical field of water treatment, and in particular relates to a method for advanced treatment of heavy alkylbenzene sulfonate production wastewater by combined use of electrochemistry (ECS) and a microporous composite water treatment agent. Background technique

[0002] At present, many oilfields in my country have entered the late stage of conventional production. The primary oil recovery and secondary oil recovery technologies cannot meet the oil recovery conditions, and the oil recovery rate is low. However, the tertiary oil recovery technology can meet the oil recovery conditions and is an effective way to increase oil recovery. In tertiary oil recovery technology, the ASP flooding composed of alkali / surfactant / polymer is the main factor to enhance oil recovery. Surfactants play an extremely important role in ASP flooding, directly affecting the interfacial tension between the flooding system and crude oil and the flo...

Claims

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