1001 results about "Primary treatment" patented technology

Techniques and devices for treating atherosclerotic disease use controlled cryogenic cooling, often in combination with angioplasty and/or stenting. A combination cryogenic/angioplasty catheter may cool the diseased blood vessel before, during, and/or after dilation. Controlled cooling of the vessel wall reduces actual/observed hyperplasia as compared to conventional uncooled angioplasty. Similar reductions in restenosis may be provided for other primary treatments of the blood vessel, including directional arthrectomy, rotational arthrectomy, laser angioplasty, stenting, and the like. Cooling of vessel wall tissues will often be performed through plaque, and the cooling process will preferably take the thermodynamic effects of the plaque into account.

Systems and methods apply a selected treatment agent or agents into contact with tissue at or in the region of a dysfunctional sphincter (in the case of GERD, fecal incontinence, or other dysfunctional sphincter disorders) to affect improved sphincter barrier function and/or to disrupt abnormal nerve pathways. The treatment agent can include at least one cytokine and/or at least one tissue bulking agent and/or at least one vanilloid compound to evoke a desired tissue response. The systems and methods can be used a primary treatment modality, or applied as a supplementary treatment before, during or after a primary intervention.

Systems and methods affect tightening of the pyloric sphincter and/or serve to mediate or moderate receptive relaxation of muscles in the stomach, to treat or mitigate various physiologic conditions, such as obesity, biliary reflex, GERD, and/or Barrett's esophagus. The systems and methods may be used as either a primary treatment modality, or applied as a supplementary treatment before, during or after a primary intervention.

Mammals are treated with agonists of bacterially-activated TLRs. The agonist are administered orally or mucosally. In one embodiment, the mammal treated is subject to a gastro-intestinal injury. The agonist can be administered prior to infliction of the gastro-intestinal injury, subsequent to infliction of the gastro-intestinal injury and concurrently with infliction of the gastro-intestinal injury. In another embodiment, the mammal is subject to tissue damage. The agonist is administered prior to the primary treatment, following the primary treatment or concurrently with the primary treatment.

A method of transcranial ultrasound thrombolysis comprises the steps of providing a predetermined level of ultrasonic energy substantially throughout a primary treatment zone encompassing the M1 branch and M2 branches of the middle cerebral artery of an individual. A thrombolytic agent is also administered to the individual. A transcranial ultrasound thrombolysis system (10) is also provided that includes a transducer (20). The transducer is adapted to provide a predetermined level of ultrasonic energy substantially throughout a primary treatment zone encompassing at least a substantial portion of the M1 branch and the M2 branches of the middle cerebral artery in one hemisphere of a brain.

A wastewater treatment process uses enhanced primary treatment to remove suspended solids from raw wastewater. Primary sludge is treated in a fermenter. Primary effluent is treated by biological nutrient removal (BNR) to produce a treated effluent and waste activated sludge (WAS). The WAS is treated in an anaerobic digester, which also treats sludge from the fermenter. Anaerobic digestate is separated to provide a liquid effluent. The liquid effluent is stripped of phosphorous and returned to the BNR as a source of readily biodegradable carbon. Liquid in the fermenter may also be separated to provide a liquid rich in volatile fatty acids (VFAs). This liquid is returned to the BNR when additional VFAs are required.

A process for the production of highly purified water 44 from Fischer-Tropsch reaction water 12 includes distillation 14 as a primary treatment stage, biological treatment including anaerobic digestion 20 and aerobic digestion 22 as a secondary treatment stage, solid-liquid separation 32 as a tertiary treatment stage and a dissolved salt and organic removal stage 40 as final treatment stage.

The invention relates to a method for utilizing a buffer strip to control agricultural non-point source pollution of a tidal river network area of a plain, belonging to the technical field of environmental protection. The method comprises the following steps of: selecting buffer strip areas, carrying out primary treatment to the buffer strip, setting a water distribution system of the buffer strip, selecting and planting plants in the buffer strip and introducing water source into the buffer strip. The method has the characteristics of simpleness, convenience, practicability, good purifying effect and free maintenance management.

The invention discloses a magnetorheological fluid recycling device and a control method and component manufacturing method thereof, and belongs to the technical field of mechanical manufacturing. The magnetorheological fluid recycling device comprises an inlet stop valve, an upper shell, a lower shell, an electrostatic filter plate, upper adsorption pipes, lower adsorption pipes, rib pipes, coils, heaters, stirrers, a pump, a return pipe and an outlet stop valve. The upper shell is connected with the lower shell through bolts, seal rings are arranged on the attached positions of the upper shell and the lower shell, and the inlet stop valve is arranged on the upper shell. Meanwhile, the invention further provides the control method and key component manufacturing method of the magnetorheological fluid recycling device. According to the magnetorheological fluid recycling device and the control method and component manufacturing method thereof, primary treatment on mixed liquid is completed through filtration and adsorption of the electrostatic filter plate, and then treatment on the mixed liquid is further completed through adsorption of the upper adsorption pipes, the lower adsorption pipes and the rib pipes; the heaters, the stirrers and a circulatory system are additionally arranged, and the purpose of thoroughly separating magnetic substances from solvent is achieved.

The invention discloses a process for removing thallium from thallium-containing heavy metal wastewater through neutralization and flocculation. The process comprises the following steps: performing primary treatment, namely adjusting the pH value of thallium-containing heavy metal wastewater to be more than 7through acid and alkali, adding an efficient coagulant, sulfide and a flocculant, and performing solid-liquid separation through a slanting board sedimentation pool; performing secondary treatment, namely adding sulfide, diatomite and the flocculant into supernatant purified water after primary treatment, and performing solid-liquid separation through the slanting board sedimentation pool; adjusting the purified water subjected to secondary treatment to be neutral, adding iron salt, and finally filtering through a filter and directly discharging to the outside. Due to the adoption of the technical scheme, the removal rate of thallium and other heavy metal ions in the heavy metal wastewater can be effectively increased, the environmental pollution can be avoided, and the medicament cost can be reduced.

There is provided a process for purification treatment of wastewater containing an organic substance. There is provided a process for purification treatment of wastewater containing an organic substance by carrying out supercritical treatment or subcritical treatment, which comprises subjecting the wastewater to at least one solid-liquid separation pretreatment selected from separation treatment with a flocculant, sedimentation treatment, flotation treatment and filtration treatment; and then subjecting the wastewater to primary treatment as biological treatment; and subsequently purifying the wastewater by treatment including secondary treatment as supercritical treatment or subcritical treatment.

The invention discloses a system for auxiliarily treating acid mine waste water by utilizing stepped interception dams and a process thereof. The system for auxiliarily treating the acid mine waste water by utilizing the stepped interception dams comprises at least three levels of interception dams, wherein the interception dams are distributed in a shape of naturally falling trapezoid so as to carry out primary treatment, neutralization treatment, reducing treatment and impurity eliminating treatment on the acid mine waste water. The system and the process disclosed by the invention have theadvantages that the stepped interception dams are established on a natural ditch by utilizing natural falls, and the functions of obstruction of the stepped dams, physical and chemical reaction of microorganisms, filtering and adsorption of plant roots and the like are also utilized, so that the process is a subsequent auxiliary and deep treatment method, the treating effect is improved, the complexity and treating difficulty of the traditional method are simplified, the cost is reduced, the water quality is improved, the heavy metal content and the acidity are further reduced, and the damages of the mine waste water to water source areas and ecological environment are reduced.

A process for the production of highly purified water 38 from Fischer-Tropsch reaction water 12, includes at least the steps of a primary treatment stage comprising an equilibrium staged separation process 14 having at least one stage for removing at least a fraction of non-acid oxygenated hydrocarbons from the Fischer-Tropsch reaction water 12 to produce a primary water-enriched stream 16, a secondary treatment stage comprising at least one membrane separation process 28 for removing at least some suspended solids and acidic oxygenated hydrocarbons from at least a portion of the primary water-enriched stream 16 to produce a secondary water-enriched stream 34 and a tertiary treatment stage comprising a dissolved salt and organic removal stage 36 for removing at least some dissolved salts and organic constituents from at least a portion of the secondary water-enriched stream 34.

The invention discloses a kit for methylation of colorectal cancer related gene multi-sites and application of the kit. A primer combination and a probe can specifically detect the methylation degrees of a plurality of colorectal cancer related gene sites. The invention further provides application and a method of the primer combination and the probe for detecting the methylation in colorectal cancer and precancerous polyps screening. The method comprises the steps that a cell lysis solution is added to cell sediment and mixed uniformly, then PVPP is added for crude extraction, a cell sediment sample after primary treatment contains a little protein and RNA, protease K and RNA enzyme are added for completely removing the protein and the RNA, cell lysate is added to a centrifugal column with an adsorption film, after impurities are washed by a DNA rising solution, a DNA eluent is added to elute the DNA in the absorption film, and finally a DNA solution is collected through centrifugation. Efficient pipe collection detection is performed aiming at the plurality of gene sites, the flexibility and the specificity are improved, and the tumor early screening requirement can be improved.

The present invention relates to a comprehensive treatment process of house refuse. Said treatment process includes the following steps: (1), squeezing and dehydrating; (2), storing and making fermentation, (3), using rotary baking incinerator to make firest incineration; (4), using vertical incinerator to make secondary incineration; (5), smoke primary treatment; (6), smoke waste heat utilization for power goneration and heating water; (7), secondary treatment of smoke; and (8), utilization of incinerator slag to make building material.

The invention discloses an in-process circular and comprehensive recovery technology for mineral processing wastewater of tin-lead-zinc polymetallic sulphide ores. The technology includes primary treatment and secondary treatment, wherein the primary treatment is to coagulate and precipitate, comprising the step of adding a coagulant to remove suspended solid and metal ion, wherein some organic pollutants are removed at the same time; the secondary treatment is to carry out an adsorption method to remove flotation agent in the wastewater so as to further reduce the CODCr (Chemical Oxygen Demand) and foamability of the wastewater; and all water generated in the secondary treatment is recycled. The technology has the advantages of being simple in equipment, high in processing efficiency, high in adaptability, less in occupied area, and few in resulting sludge, and has higher effect of processing the mineral processing wastewater of tin-lead-zinc polymetallic sulphide ores; the polymeric ferric sulfate (PFS) and polyacrylamide (PAM) are selected and used as the compound coagulant to remove the pollutants such as the suspended solid and the metal ion during precipitating and removing the pollutants in the wastewater; and compared with single inorganic coagulant, the compound coagulant of the PFS and the PAM is low in dosage, good in effect, low in cost, and safe and nontoxic, and has no secondary pollution.

The invention discloses a VOC (volatile organic compound) waste gas treatment system. The VOC waste gas treatment system sequentially comprises a fan, a padding spray tower device, an ultraviolet activated carbon integrated device and a purified gas discharge opening, wherein the fan is connected with a VOC waste gas source; the padding spray tower device is connected with an air outlet of the fan; the ultraviolet activated carbon integrated device is connected to an air outlet of the padding spray tower device; the purified gas discharge opening is connected to the ultraviolet activated carbon integrated device. Waste gas is treated efficiently by the design of combining the padding spray tower with the ultraviolet activated carbon integrated purifier. Firstly, the padding spray tower is used for spraying washing; organic waste gas is dissolved into a purifying liquid well by multi-surface hollow spheres; then air water of a defogging layer is matched to share efficiently, so that gas after primary treatment is obtained by the padding spray tower. The gas after primary treatment is treated by the ultraviolet activated carbon integrated purifier, and clean gas reaching the standard is discharged out. The size of the device is reduced; the waste gas treatment efficiency is high; the purification cost is reduced; the purification standard reaching effect is ensured.

The present invention provides a cadmium-containing wastewater treatment method, which comprises the following steps that: (1) cadmium-containing wastewater generates CdS, and precipitate separation is performed; and (2) the precipitate-separated wastewater is subjected to an anion and cation exchange treatment. According to the wastewater treated by the method, a cadmium content in the effluent is controlled to less than 0.03 mg/L, is far less than the national emission standard, and effective cadmium recovery is achieved with the whole process; although the primary treatment adopts the CdS precipitation method, sulfur is recycled through the ion exchange column in the secondary treatment so as not to introduce the contamination ion sulfur to the water, and the precipitation process does not adopt any flocculants, such that the treated cadmium precipitate dehydration solid is easily recycled.