40results about How to "Cost-effective removal" patented technology

A portable, lightweight digital imaging device uses a slit scanning arrangement to obtain an image of the eye, in particular the retina. In at least one embodiment, a digital retinal imaging device includes an illumination source operable to produce a source beam, wherein the source beam defines an illumination pathway, a scanning mechanism operable to cause a scanning motion of the illumination pathway in one dimension with respect to a target, an optical element situated within the illumination pathway, the optical element operable to focus the illumination pathway into an illumination slit at a plane conjugate to the target, wherein the illumination slit is slit shaped, a first two dimensional detector array operable to detect illumination returning from the target and acquire one or more data sets from the detected illumination, wherein the returning illumination defines a detection pathway, and a shaping mechanism positioned within the illumination pathway, wherein the shaping mechanism shapes the source beam into at least one arc at a plane conjugate to the pupil. In at least one exemplary embodiment, the digital retinal imaging device is operable to minimize at least one aberration from the optical element or an unwanted reflection from the target or a reflection from a device.

The invented method is distinguished by a combination of the following method steps:provision of a semiconductor planar substrate composed of a semiconductor material,reduction of the thickness of the semiconductor planar substrate inside at least one surface region of the semiconductor planar substrate in order to form a raised surface region in relation to the surface planar region of reduced thickness,structuring the raised surface region of the semiconductor planar substrate by means of local mechanical removal of material in order to place impressions inside the raised surface regions,joining the structured surface of the semiconductor planar substrate with the glasslike planar substrate in such a manner that the glasslike planar substrate at least partially covers the surface planar region of reduced thickness,tempering the joined planar substrates in such a manner that in a first tempering phase, which is conducted under vacuum conditions, the glasslike planar substrate covering the surface region of reduced thickness forms a fluid-tight bond with the surface region of reduced thickness, with the planar substrate covering the impressions in a fluid-tight manner under vacuum conditions, and that in a second tempering phase, at least partial areas of the glasslike material flow into the impressions of the structured surface of the semiconductor planar substrate.

This invention is related to a composition of matter useful for sequestering target metal-ions from an environment, said composition comprising a polymer and derivatized nanoparticles comprising inorganic nanoparticles having an attached metal-ion sequestraint, wherein said inorganic nanoparticles have an average particle size of less than 200 nm and the derivatized nanoparticles have a stability constant greater than 1010 with iron (III).

The invention provides a processing technology for a high-concentration waste liquid in circuit board industry. Considering from the point of wastewater resource recovery and final processing, nickel-containing wastewater, a nickel-containing waste liquid and a micro-etching solution are in early-stage processing for recovering valuable metals copper and nickel to obtain the waste liquor, the waste liquor is mixed into an acidized waste liquid; the acidic waste liquid, an alkaline waste liquid and an organic waste liquid are subjected to acid-precipitation coagulation sedimentation in a reaction pool, and a waste liquid discharged by a production workshop is fully utilized for self neutralization, so that a water-processing agent is saved, and the operation cost is reduced; and the acid-precipitation coagulation supernatant is subjected to high-grade oxidation for decomposing macromolecular organics and destroying complexes, sodium sulfide, sodium hydroxide and lime are added for coagulation sedimentation for removing heavy metals, the supernatant is subjected to hydrolysis acidification and biological oxidation, and obtained water reaches the standard and is discharged.

A process for removing trace organic substance from water by ozone / ultraviolet ray-biologic activated carbon method features use of an ozone / ultraviolet ray unit and a biologic activated unit, and includes introducing the water to be treated and ozone to ozone / ultraviolet ray reactor containing ultraviolet lamp, mixing, flowing up, staying for 4-20 min to remove the convert the organic pollutant, flowing biologic activated carbon reactor, and staying for 10-80 min to degradate and remove the organic pollutant. Its advantage is high effect.

The invention discloses a device and a method used for processing chemical wastewater with salinity higher than 10%. The device comprises a reaction tank body and a control system. The reaction tank body comprises a sealed electrolysis tank with a water inlet and a water outlet. The sealed electrolysis tank is divided into a first module, a second module, and a third module through separation walls between the water inlet and the water outlet, wherein the modules are sequentially communicated. A plurality sets of electrode plates are respectively arranged in the first module, the second module, and the third module. The control system comprises a central control unit. The control system also comprises a first hydrogen peroxide adding device, a first pH value controller, a second hydrogen peroxide adding device, a second pH value controller, and a stabilized direct-current power supply, which are connected with the central control unit. The device and the method provided by the invention are used for processing chemical wastewater with salinity higher than 10%. The quality of final outlet water is better than that specified by a first-level standard of an Integrated Wastewater Discharge Standard (GB8978-1996).

The invention discloses a treatment method of anaerobic fermentation liquid of livestock and poultry breeding wastewater. Based on the novel nitrogen and phosphorus removal theoretical technology, a cyclic autotrophic nitrogen removal coupled denitrifying phosphorus removal process, aiming at reducing the cost and realizing deep nitrogen and phosphorus removal, is developed. The treatment method comprises the following specific steps: firstly feeding raw livestock and poultry breeding wastewater into a denitrifying phosphorus removal SBR reactor, and removing COD and thoroughly releasing phosphorus by use of an anaerobic reaction; feeding the high-concentration phosphorus-containing anaerobic effluent into an MAP reaction tank for phosphate crystallization recovery; continuously feeding the wastewater anaerobic fermentation liquid and the MAP settling tank effluent into a semi-short range denitrifying reactor for decarburization and partial ammoniacal nitrogen transformation; feeding the effluent of the semi-short range denitrifying reactor into an anaerobic ammonia oxidation reactor for nitrogen removal; feeding the effluent of the anaerobic ammonia oxidation reactor into the denitrifying phosphorus removal SBR for deep nitrogen and phosphorus removal of the anoxic phase, and draining water and discharging mud after the reaction is terminated. The treatment method is efficient and stable in process and greatly reduced in operating cost, and has great popularization and application values.