摘要:
A desalination plant for treating a sea water or brackish water feed is provided. The desalination plant includes a first treatment section to effectively remove scaling species, the first treatment section including nanofiltration section, the nanofiltration section including at least two stages and at least two passes; and a reverse osmosis section that operates at high recovery to produce a purified permeate stream and a selectively NaCl salt-enriched reject stream as a saline output.
摘要:
The present invention discloses a desalination plant that operates with a sea water or brackish water feed and produces a concentrated and selectively improved salt reject stream and a pure water permeate stream from a first treatment section that is arranged to produce primarily water at high recovery using membrane desalination processes. The reject stream from the first treatment line has a component distribution that is substantially reduced in native di- and polyvalent scaling ions, essentially depleted of sulfate, has substantially higher total dissolved solids than a traditional sea water reverse osmosis reject, yet is suitable for thermal treatment processes. The system may be enhanced by monovalent salt components. The unit may be integrated with a second treatment section, in which the first reject stream is further concentrated, purified, and processed to produce a high purity salt product.
摘要:
A series of retroreflective materials of graduated reflectivity each comprising a plurality of transparent elements wherein each of the retroreflective materials has a different proportion of the plurality of transparent elements which are covered with a reflective coating. The materials can be used to dress a set design suitable for filming using chromakeying techniques. A plurality of different objects on the set are covered in different ones of the series of retroreflective materials according, for example, to the position and orientation of the object on the set.
摘要:
A closure system for open headed containers utilizing a thermoplastic closure of the type having a disk and skirt depending therefrom the skirt portion including an annular ring adjacent its lower extremity adapted to lie beneath and radially inwardly with respect to an outwardly directed annular protrusion on a complementary container; a weakened stress relieving annular portion on the skirt lying immediately above said annular ring; the annular weakened portion having a wall thickness sized to ensure that stress relief and attendant creep in the thermoplastic material of the closure after affixation of the closure to the container occurs substantially at the annular weakened portion thereby allowing the lower portions of the annular ring to move radially inwardly; the wall thickness of the annular weakened portion at all times being of adequate thickness to resist premature rupture in the event that the closure/container unit is subjected to an impact; seal means between the closure and the container above the annular ring.
摘要:
Disclosed is a syringe disposal device (10) suitable for disposal of a single syringe. The device is suitable for disposal of syringes (30) having a needle (33), a barrel (38), a plunger (39) and on the barrel (38) or plunger (39), a transversely extending flange portion (38a). The disposal device (10) may include a needle encapsulating portion (12), a syringe barrel encapsulating portion (14) and a syringe retention portion (16). The syringe retention portion (16) has an open end (18) to allow syringe (30) to be inserted into device (10). The opposed end (19) of syringe retention portion (16) communicates the retention portion (16) with syringe barrel encapsulating portion (14). Engagement means (20) are provided at, or proximate, the opposed end (19) of the syringe retention portion (16) for retaining syringe (30) within the disposed device (10) after passage of the transversely extending flange (38a) past the engagement means (20) by interference fit. The disposal device (10) is advantageously of tapered form.
摘要:
A three piece boot comprising a sock-like inner member, a structural protective cage intermediate member incorporating rigid toe, arch and heel protection and an outer member having a sole with flexible upper with little form rigidity; the inner sock-like member having resiliently deformable foamed material bonded to the toe, sole and heel portions in order to provide a comfort liner and in order to facilitate the substitution of different inner sock-like members to accommodate a range of foot sizes within a single protective cage and flexible outer member size; a locking device to lock the protective cage to the outer member and a releasable locking device to lock the inner sock-like member into the protective cage.
摘要:
A device for providing a visual indication of the amount of liquid or other materials in a blender cup or other receptacle is provided. The device is mounted on the rotatable impeller shaft in the base of the cup, and preferably is employed to affix the impeller to the shaft. Graduations formed as part of or provided on the device at appropriate locations provide a visual indication of the amount of ingredients introduced.