摘要:
The present invention relates to an advanced treatment process for sewage or wastewater using a membrane filter, and more particularly, to a submerged- membrane bioreactor that easily responds to load regulation, and to a method of treating wastewater using the same. An object of the present invention is to provide a submerged-membrane bioreactor that easily responds to load regulation, and specifically, to low loads. To achieve the above-described object, the present invention relates to a submerged-membrane bioreactor that easily responds to load regulation so that an advanced treatment of sewage and wastewater may be effectively realized using a submerged-membrane filter in which a portion of air (gas) used for cleaning a membrane is recirculated to easily adjust a dissolved oxygen concentration while maintaining a membrane-cleaning function, and a method of treating wastewater using the same. Since the submerged-membrane bioreactor may easily respond to load regulation, and specifically, to low loads, domestic sewage and wastewater treatment processes, which are frequently performed under low load in an initial test operation and operating processes, may be effectively and stably performed. Also, the quality of water may be improved, and the use of a treatment apparatus using the submerged membrane filter may be promoted.
摘要:
A disposable filtration system can include a disposable filter housing having an ultrafiltration filter contained therein. The disposable filtration system can further include a feed inlet and retentate outlet in fluid communication on one side of the filter and a permeate conduit on the other side of the filter for withdrawing permeate that passes through the filter. The system can include at least one disposable pressure control valve in fluid communication with either the retentate outlet or the permeate conduit and configured to regulate the pressure within the housing.
摘要:
The present invention relates to a process for preparing a product rich in epichlorohydrin comprising the steps of (a) reacting a mixture of dichlorohydrins and a base at a temperature in the range from 0-65°C and during a period of time in the range from 1 second to 180 minutes to obtain an epichlorohydrin-containing reaction mixture comprising two liquid phases,and (b) subjecting at least part of said reaction mixture as obtained in step a) to a membrane separation process driven by a pressure gradient wherein the mixture is separated into a first stream which is rich in epichlorohydrin and a second stream which is lean in epichlorohydrin.
摘要:
This apparatus comprises: an inverted osmosis water potabilization module, a container module in the form of an enclosure inside of which the various elements of the water potabilization module are located in a compact arrangement, an autonomous electric feeding module comprising a foldable frame carrying the photovoltaic plates; an electronic control for the apparatus and a lower support module for holding and transporting the apparatus.
摘要:
Separation processes using engineered osmosis are disclosed generally involving the extraction of solvent from a first solution to concentrate solute by using a second concentrated solution to draw the solvent from the first solution across a semi-permeable membrane. Enhanced efficiency may result from using low grade waste heat from industrial or commercial sources.
摘要:
The present methods relate to the isolation and concentration of proteins using cross-flow membrane filtration, and to proteins produced by such methods. A feature of the method is that the protein of interest is retained by a cross-flow membrane under certain conditions that promote retention, while under other condition the protein passes through the membrane.