The Experts below are selected from a list of 10809 Experts worldwide ranked by ideXlab platform

Deyin Hou - One of the best experts on this subject based on the ideXlab platform.

  • development of a novel Integrated Membrane System incorporated with an activated coke adsorption unit for advanced coal gasification wastewater treatment
    Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2015
    Co-Authors: Jun Wang, Xiaohui Zhang, Deyin Hou
    Abstract:

    Abstract Lurgi–Ruhrgas coal gasification process is commonly used to produce methane in many regions. However, such a process produces wastewater containing toxic pollutants that are difficult to remove by the conventional Integrated Membrane System consisting of a coagulation unit, an ultrafiltration (UF) unit, a reverse osmosis (RO) unit, and a Membrane distillation (MD) unit. In this regard, an activated coke was added prior to the UF unit in order to remove the organic matters and meet the wastewater discharge regulation. The activated coke is an abundant, low-cost substitute to the more commonly used expensive activated carbon. The effect of the adsorption unit on the removal efficiency and Membrane fouling mitigation was Systematically studied with real coal gasification wastewater. The results revealed that majority of the organic matters were effectively removed by the adsorption unit. Consequently, the fouling phenomenon of the subsequent Membrane units was suppressed. The permeate fluxes of the UF, RO, and MD units increased by 31.6%, 21.9%, and 23.1%, respectively, when comparing the fluxes between the processes with and without the adsorption unit. The results demonstrated that coupling activated coke adsorption with Integrated Membrane units was an attractive and feasible option for the advanced treatment of coal gasification wastewater.

Jun Wang - One of the best experts on this subject based on the ideXlab platform.

  • development of a novel Integrated Membrane System incorporated with an activated coke adsorption unit for advanced coal gasification wastewater treatment
    Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2015
    Co-Authors: Jun Wang, Xiaohui Zhang, Deyin Hou
    Abstract:

    Abstract Lurgi–Ruhrgas coal gasification process is commonly used to produce methane in many regions. However, such a process produces wastewater containing toxic pollutants that are difficult to remove by the conventional Integrated Membrane System consisting of a coagulation unit, an ultrafiltration (UF) unit, a reverse osmosis (RO) unit, and a Membrane distillation (MD) unit. In this regard, an activated coke was added prior to the UF unit in order to remove the organic matters and meet the wastewater discharge regulation. The activated coke is an abundant, low-cost substitute to the more commonly used expensive activated carbon. The effect of the adsorption unit on the removal efficiency and Membrane fouling mitigation was Systematically studied with real coal gasification wastewater. The results revealed that majority of the organic matters were effectively removed by the adsorption unit. Consequently, the fouling phenomenon of the subsequent Membrane units was suppressed. The permeate fluxes of the UF, RO, and MD units increased by 31.6%, 21.9%, and 23.1%, respectively, when comparing the fluxes between the processes with and without the adsorption unit. The results demonstrated that coupling activated coke adsorption with Integrated Membrane units was an attractive and feasible option for the advanced treatment of coal gasification wastewater.

Xiaohui Zhang - One of the best experts on this subject based on the ideXlab platform.

  • development of a novel Integrated Membrane System incorporated with an activated coke adsorption unit for advanced coal gasification wastewater treatment
    Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2015
    Co-Authors: Jun Wang, Xiaohui Zhang, Deyin Hou
    Abstract:

    Abstract Lurgi–Ruhrgas coal gasification process is commonly used to produce methane in many regions. However, such a process produces wastewater containing toxic pollutants that are difficult to remove by the conventional Integrated Membrane System consisting of a coagulation unit, an ultrafiltration (UF) unit, a reverse osmosis (RO) unit, and a Membrane distillation (MD) unit. In this regard, an activated coke was added prior to the UF unit in order to remove the organic matters and meet the wastewater discharge regulation. The activated coke is an abundant, low-cost substitute to the more commonly used expensive activated carbon. The effect of the adsorption unit on the removal efficiency and Membrane fouling mitigation was Systematically studied with real coal gasification wastewater. The results revealed that majority of the organic matters were effectively removed by the adsorption unit. Consequently, the fouling phenomenon of the subsequent Membrane units was suppressed. The permeate fluxes of the UF, RO, and MD units increased by 31.6%, 21.9%, and 23.1%, respectively, when comparing the fluxes between the processes with and without the adsorption unit. The results demonstrated that coupling activated coke adsorption with Integrated Membrane units was an attractive and feasible option for the advanced treatment of coal gasification wastewater.

Yang Zhang - One of the best experts on this subject based on the ideXlab platform.

  • Integrated Membrane System without adding chemicals for produced water desalination towards zero liquid discharge
    Desalination, 2020
    Co-Authors: Sigui Hu, Shuaifei Zhao, Xiaofei Zhang, Yilin Wang, Lingxue Kong, Lei Song, Yang Zhang
    Abstract:

    Abstract Treatment and management of produced water are of great significance but critical challenges remain due to the huge quantity and complexity of the liquid waste. Here we propose and demonstrate an Integrated Membrane based System combining electrodialysis, nanofiltration and Membrane distillation (ED-NF-MD) for highly efficient treatment of oilfield produced water. Our new System enables zero liquid discharge (ZLD) by concentrating the produced water to an extremely high concentration (up to 373,000 mg/L) at a high water recovery of 99.8% without chemical (e.g. soda or anti-scalants) adding. To the best of our knowledge, such performance is the highest in terms of the final concentration and water recovery among various ZLD technologies. ZLD of our Membrane System mainly comes from the metathesis by ED that separates the scaling ions into different streams, thereby creating a scaling-free environment. Basic economic evaluation shows that the total specific energy consumption for ZLD in the whole ED-NF-MD System includes a minimal electrical energy requirement (33 kW·h/m3) and a large thermal energy requirement for MD (154 kW·h/m3). The novel Membrane based System shows great potential in realizing real ZLD in produced water treatment by minimizing scaling and thus highly concentrating the feed solution.

C P Leo - One of the best experts on this subject based on the ideXlab platform.

  • a review on the applicability of Integrated hybrid Membrane processes in water treatment and desalination plants
    Desalination, 2015
    Co-Authors: Wei Lun Ang, Nidal Hilal, Abdul Wahab Mohammad, C P Leo
    Abstract:

    Abstract Conventional processes involved in water treatment, either in water treatment plants or reverse osmosis desalination plants, have encountered several obstacles that have severely affected their performances and efficiencies. Pollution of natural water resources, increasing demand and overuse of clean water have all put critical stress on currently available conventional water treatment/desalination plants. Due to these problems, Integrated/hybrid Membrane processes have attracted much interest. An Integrated/hybrid Membrane System is a process which combines a Membrane filtration unit (microfiltration/ultrafiltration/nanofiltration) with other processes such as coagulation, adsorption and ion exchange. Alternatively, it can be a combination of different Membranes in the same System with a conventional process. The purpose of this paper is to review the applicability of Integrated/hybrid Membrane Systems in water treatment plants and reverse osmosis desalination plants. The literature shows that many benefits and marked improvements could be achieved with Integrated/hybrid Membrane processes, such as enhanced quality of the water produced, energy savings, environmental friendliness, and reductions in the capital and operating costs of the plants. The implications of the Integrated Membrane System prove that it has huge potential to be widely applied and can lead to a breakthrough in solving the problem of water scarcity.