An integrated coagulation-ultrafiltration-nanofiltration process for internal reuse of shale gas flowback and produced water

Chang, Haiqing; Liu, Baicang; Yang, Boxuan; Yang, Xin; Guo, Can; He, Qiang; Liang, Songmiao; Chen, Sheng; Yang, Ping

doi:10.1016/j.seppur.2018.09.081

Cited by 115 publications

(24 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results showed 57% water recoveries from produced water of containing 135 /L dissolved solids. In similar applications, Chang, et al [161] and Kong, et al [162] pretreated shale gas flow back water and produced water with chemical coagulation prior to treatment with UF. Both studies found a significant reduction in fouling of the membranes and maintenance of constant flux.…”

Section: Pretreatment Strategies For Membrane Processesmentioning

confidence: 99%

Membrane Technologies in Wastewater Treatment: A Review

2020

View full text Add to dashboard Cite

In the face of water shortages, the world seeks to explore all available options in reducing the over exploitation of limited freshwater resources. One of the surest available water resources is wastewater. As the population grows, industrial, agricultural, and domestic activities increase accordingly in order to cater for the voluminous needs of man. These activities produce large volumes of wastewater from which water can be reclaimed to serve many purposes. Over the years, conventional wastewater treatment processes have succeeded to some extent in treating effluents for discharge purposes. However, improvements in wastewater treatment processes are necessary in order to make treated wastewater re-usable for industrial, agricultural, and domestic purposes. Membrane technology has emerged as a favorite choice for reclaiming water from different wastewater streams for re-use. This review looks at the trending membrane technologies in wastewater treatment, their advantages and disadvantages. It also discusses membrane fouling, membrane cleaning, and membrane modules. Finally, recommendations for future research pertaining to the application of membrane technology in wastewater treatment are made.

show abstract

Section: Pretreatment Strategies For Membrane Processesmentioning

confidence: 99%

Membrane Technologies in Wastewater Treatment: A Review

2020

View full text Add to dashboard Cite

show abstract

“…11 Moreover, the high COD in FW also needs to be effectively removed. 12 Although the removal efficiency of COD from FW exceeded 80% by coagulation sedimentation, 13 fenton oxidation, 14 and integrated coagulationultrafiltration-nanofiltration technologies, 15 they also need to consume excessive amounts of energy and may produce a large number of harmful by-products. The biological technology has been investigated as a better treatment option for FW due to its low energy consumption and strong sustainability.…”

Section: Introductionmentioning

confidence: 99%

Treatment and nutrient recovery of synthetic flowback water from shale gas extraction by air‐cathode (PMo/CB) microbial desalination cells

Yang

Zhang

et al. 2020

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND: Due to the rapid development of shale gas extraction, the treatment of flowback water (FW) is becoming one major challenge because of its high saline, high ammonium (NH 4 +), high phosphorus (PO 4 3−), and complex organic contents. This study aimed to treat the high-salinity synthetic FW and recover nutrient using the air-cathode (PMo/CB) microbial desalination cells (MDCs). RESULTS: The removal efficiency of chemical oxygen demand (COD) exceeded 90% along with an electricity generation of 105.6 mW m −2. The highest removal and the recovery efficiency of 300 mg L −1 NH 4 + and 100 mg L −1 PO 4 3− were 65.6 ± 19.0% and 75.8 ± 32.0%, 52.6% and 57.8%, respectively. High-throughput sequencing analysis of anodic biofilms indicated that Firmicutes, Bacteroidetes, and Proteobacteria enriched at high influent NH 4 + concentration were responsible for producing electricity and degrading complex organics. Two denitrifying bacteria, Trichococcus and Marinobacterium, promoted the COD removal and also improved the electricity generation. Rhodococcus, a kind of heterotrophic nitrification-denitrification bacteria, contributed to nitrification in the cathodic chamber along with enhancing the denitrifying degradation of COD. Nitrincolaceae, capable of heterotrophic nitrate reduction to ammonium, were favorable to the recovery of NH 4 +. CONCLUSIONS: Overall results concluded that PMo/CB-MDC could be a promising alternative technique for the efficient treatment of FW and a pretreatment process for separating nutrient from the recovery chamber.

show abstract

“…The consumption of alkalinity in produced water to form Al(OH) 3 and Fe(OH) 3 flocs was the same, and the pH drop by using alum as coagulant exhibited the same trend as using ferric chloride (Figure 3b). Recently, Chang et al [33] employed both alum and ferric chloride to coagulate flowback and produced water. At an optimal dose of 900 mg/L, ferric chloride showed a greater capacity to remove turbidity and organics.…”

Section: Chemical Coagulation (Cc)mentioning

confidence: 99%

“…Alum exhibited a slightly inferior efficiency, which is different from the results obtained in the current study. The difference, however, resides in the fact that Chang et al [33] compared the efficiency of the chemicals added in mg/L of the chemical molecules and not the molar concentration of the metal itself. If the coagulant dose is converted to molar concentrations, Chang et al's study reached the same conclusion as this study: that Al(III) coagulant outperformed Fe(III) for better removal of turbidity.…”

Section: Chemical Coagulation (Cc)mentioning

confidence: 99%

See 1 more Smart Citation

Treatment of Produced Water in the Permian Basin for Hydraulic Fracturing: Comparison of Different Coagulation Processes and Innovative Filter Media

Rodriguez

Wang

et al. 2020

Water

View full text Add to dashboard Cite

Produced water is the largest volume of waste product generated during oil and natural gas exploration and production. The traditional method to dispose of produced water involves deep well injection, but this option is becoming more challenging due to high operational cost, limited disposal capacity, and more stringent regulations. Meanwhile, large volumes of freshwater are used for hydraulic fracturing. The goal of this study is to develop cost-effective technologies, and optimize system design and operation to treat highly saline produced water (120–140 g/L total dissolved solids) for hydraulic fracturing. Produced water was collected from a salt water disposal facility in the Permian Basin, New Mexico. Chemical coagulation (CC) using ferric chloride and aluminum sulfate as coagulants was compared with electrocoagulation (EC) with aluminum electrodes for removal of suspended contaminants. The effects of coagulant dose, current density, and hydraulic retention time during EC on turbidity removal were investigated. Experimental results showed that aluminum sulfate was more efficient and cost-effective than ferric chloride for removing turbidity from produced water. The optimal aluminum dose was achieved at operating current density of 6.60 mA/cm2 and 12 min contact time during EC treatment, which resulted in 74% removal of suspended solids and 53–78% removal of total organic carbon (TOC). The energy requirement of EC was calculated 0.36 kWh/m3 of water treated. The total operating cost of EC was estimated $0.44/m3 of treated water, which is 1.7 or 1.2 times higher than CC using alum or ferric chloride as the coagulant, respectively. The EC operating cost was primarily associated with the consumption of aluminum electrode materials due to faradaic reactions and electrodes corrosions. EC has the advantage of shorter retention time, in situ production of coagulants, less sludge generation, and high mobility for onsite produced water treatment. The fine particles and other contaminants after coagulation were further treated in continuous-flow columns packed with different filter media, including agricultural waste products (pecan shell, walnut shell, and biochar), and new and spent granular activated carbon (GAC). Turbidity, TOC, metals, and electrical conductivity were monitored to evaluate the performance of the treatment system and the adsorption capacities of different media. Biochar and GAC showed the greatest removal of turbidity and TOC in produced water. These treatment technologies were demonstrated to be effective for the removal of suspended constituents and iron, and to produce a clean brine for onsite reuse, such as hydraulic fracturing.

show abstract

An integrated coagulation-ultrafiltration-nanofiltration process for internal reuse of shale gas flowback and produced water

Cited by 115 publications

References 53 publications

Membrane Technologies in Wastewater Treatment: A Review

Membrane Technologies in Wastewater Treatment: A Review

Treatment and nutrient recovery of synthetic flowback water from shale gas extraction by air‐cathode (PMo/CB) microbial desalination cells

Treatment of Produced Water in the Permian Basin for Hydraulic Fracturing: Comparison of Different Coagulation Processes and Innovative Filter Media

Contact Info

Product

Resources

About