Pilot study of oilfield wastewater treatment by micro
In summary, the pilot study of oilfield wastewater treatment in a dynamic operation mode showed that the micro-flocculation filtration technique led to a better performance with regard to the removal of oil and SS in wastewater. The removal rates of oil and SS were significantly improved by adding the micro-flocculation device.
These results suggest that the micro-flocculation filtration with the ceramsite as filter media is a suitable pretreatment process for the oilfield wastewater treatment. Discover the world's
Study on the Flocculation of Oilfield Wastewater
Using microwave technology enhanced flocculation treatment of oilfield wastewater containing polymer .Chose the wastewater COD removal efficiency as an evaluation index, investigated four kinds of flocculants, such as AlCl3, FeCl3, PAC, PAF in the microwave irradiation and no microwave irradiation two types of test flocculation conditions, and offered to fly ash as adsorbent adsorption-microwave flocculation combined process to enhance wastewater treatment effect, with no secondary pollution
At the PAC dosage of 80 mg·L-1 and the CPAM dosage of 0.8 mg·L-1, the turbidity of oily wastewater is reduced from 153.8 NTU to 11.2 NTU, and the turbidity removal rate reaches 92.69%. Through further measurements, oil content and SS content are less than 10 mg·L-1, which meets the requirement of the Daqing oilfield re-injection standard.
Oilfield Produced Water Treatment by Coagulation
In this study, coagulation and flocculation process was used to treat a biodiesel wastewater with polyaluminium chloride as a coagulant. The improvement of the process by using anionic as
The issue of pipeline scaling and oil-water separation caused by treating produced water in Alkali/Surfactant/Polymer (ASP) flooding greatly limits the wide use of ASP flooding technology. Therefore, this study of the demulsification-flocculation mechanism of oil-water emulsion in ASP flooding produced water is of great importance for ASP produced water treatment and its application.
Study on Pretreatment of Dissolved Pollutants in Heavy Oil
In this study, the effluent from an oilfield wastewater treatment plant was used as an experimental object. The effluent included Poly Aluminum Chloride (PAC), Poly Aluminum Ferric Chloride (PAFC), Poly Aluminum Silicate (PSAF), and Poly Ferric Sulfate (PFS). The removal effects of four different flocculants on the dissolved pollutants in heavy oil wastewater were investigated, along with the mechanisms of flocculation [18-22].
The produced water is firstly demulsified and then flocculated. In order to verify the feasibility of treatment of produced water by the demulsification-flocculation method, the demulsification-flocculation mechanism of oil-water emulsion in ASP flooding produced water must be fully understood.
[PDF] The flocculation mechanism and treatment of oily
In the present study, the performance of compound flocculants composed of different concentrations of polyaluminum chloride (PAC) and cationic polyacrylamide (CPAM), the influencing mechanism of the flocculation process and the effects of temperature, settling time, and speed and time of stirring were investigated. The results show that the poor water quality with high concentrations of oil
(2014). Treatment of oilfield fracturing wastewater by a sequential combination of flocculation, Fenton oxidation and SBR process. Environmental Technology: Vol. 35, No. 22, pp. 2878-2884.
Study on Demulsification-Flocculation Mechanism of Oil
The issue of pipeline scaling and oil-water separation caused by treating produced water in Alkali/Surfactant/Polymer (ASP) flooding greatly limits the wide use of ASP flooding technology. Therefore, this study of the demulsification-flocculation mechanism of oil-water emulsion in ASP flooding produced water is of great importance for ASP produced water treatment and its application.
Recently, poly-zinc silicate (PZSS), a new type of coagulant, has received much attention in wastewater treatment because of its non-toxicity and specific characteristics of the charge-neutralization and the bridging effect , .It has been widely used to purify drinking water and wastewaters in various industries, such as, cane sugar, dye, tannery, amylon, brewery, paper, and electric power.
