The Application of Biological Wastewater Treatment Technology in Shengli Oilfield

Song, Yongting; Du, Chenyu; Wang, H.; Li, X. M.; Guo, Suzhen

doi:10.1080/10916466.2011.648041

Cited by 6 publications

(3 citation statements)

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“…At present, pipeline leakage detection and location methods mainly include negative pressure wave method [4], infrasonic wave method [5], flowrate balance method [6], correlation analysis method [7], transient state model method [8], neural network method [9] and so on. Among them, infrasonic wave method is more mature, with high sensitivity, accurate positioning and wide application range.…”

Section: Introductionmentioning

confidence: 99%

Study on tailings pipeline leakage location based on CEEMDAN and quadratic cross-correlation delay estimation

Xiao,

Liu,

Wen

2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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Aiming at the location problem in tailings pipeline leakage detection, the leakage signal is analyzed based on infrasonic wave, and the collected infrasonic wave signal is decomposed by adaptive noise complete ensemble empirical mode decomposition (CEEMDAN), through the correlation coefficient, the intrinsic mode component (IMF) which is highly correlated with the original infrasonic wave signal is selected and combined with the residual component to reconstruct the signal, and the infrasonic wave signal after noise removal is obtained. Then, the second time cross-correlation time delay estimation algorithm is used to calculate the time difference of the leakage signal received by the acoustic sensor at both ends of the tailings pipeline, and the leakage point is located based on the principle of pipeline leakage location. The simulated leakage experiment was carried out on the tailings pipeline of the relevant mine. The results show that: after the CEEMDAN algorithm reconstructs the signal, the signal-to-noise ratio of the signal is larger and the root mean square error is smaller, and the denoising effect is better; the quadratic cross-correlation time delay estimation algorithm can locate the leakage point within ±30 meters, and the relative error is controlled within 10%, making the positioning more accurate.

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Section: Introductionmentioning

confidence: 99%

Study on tailings pipeline leakage location based on CEEMDAN and quadratic cross-correlation delay estimation

Xiao,

Liu,

Wen

2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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“…After mixing, its composition is very complex, and the main characteristic is that the wastewater contains a large number of oil droplets of different sizes and suspended matter [1][2][3][4]. Chemical flocculation treatment method can make the oil droplets and suspended matter in the wastewater quickly settle and flocculate, which is one of the main treatment methods for oilfield wastewater [5,6]. The organic polymer flocculant cationic polyacrylamide (CPAM) has the characteristics of low additive amount, good turbidity removal and water purification effect, high COD removal efficiency, and has become the most commonly used polymer flocculant in the oilfield wastewater treatment process [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Cationic Polyacrylamide Suspension and Its Application in Oilfield Wastewater Treatment

Wei,

Long,

et al. 2023

Preprint

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Solid particle cationic polyacrylamide (CPAM) is one of the most commonly used organic polymer flocculants in oilfield wastewater treatment, but there are some problems, such as slow dissolution rate, and easy to form a "fish-eye" in the process of diluting into aqueous solution. However, the current liquid CPAM products also have some problems, such as low effective content, poor storage stability, degradation in a short time and high preparation cost. In this paper, a secondary processing technology of solid particle CPAM was studied, and a CPAM suspension was successfully prepared. This suspension has an effective content of 50.00%, No separation in 7 days of storage at room temperature, no separation in 30 min of centrifugation at a speed of 2000 r/min, and diluted to a 0.40 % weak gel solution in just 16.00 min. For 1000 NTU of diatomite simulated wastewater, the optimal turbidity removal rate of the suspension was 99.50%, which was higher than the optimal turbidity removal rate of 98.40% for the inorganic flocculant polymeric aluminum chloride (PAC). For oil and gas field oily wastewater, the optimal turbidity removal rate of CPAM suspension was 35.60%, which was higher than the optimal turbidity removal rate of 28.40% for solid particle CPAM.

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“…Biological wastewater treatment systems are one of the most common wastewater treatment methods in the world [Andreottola et al 2009, Song et al 2014]. Properly adjusted technological conditions make it possible to achieve satisfactory removal of carbon, nitrogen and phosphorus compounds [Turkmenler and Aslan 2017, Ofman and Struk-Sokołowska, 2019, Joshiba et al 2019].…”

Section: Introductionmentioning

confidence: 99%

Transformation Analysis of Carbon and Nitrogen Compounds in Wastewater Treated in a Vertical Biofilter

Wawrentowicz¹

2021

J. Ecol. Eng.

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The Application of Biological Wastewater Treatment Technology in Shengli Oilfield

Cited by 6 publications

References 0 publications

Study on tailings pipeline leakage location based on CEEMDAN and quadratic cross-correlation delay estimation

Study on tailings pipeline leakage location based on CEEMDAN and quadratic cross-correlation delay estimation

Preparation of Cationic Polyacrylamide Suspension and Its Application in Oilfield Wastewater Treatment

Transformation Analysis of Carbon and Nitrogen Compounds in Wastewater Treated in a Vertical Biofilter

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