38results about How to "High concentration rate" patented technology

The invention relates to a low-temperature high-efficiency atomization ejection seawater desalination device and a method thereof, and is suitable for the field of seawater desalination. The device comprises a low-pressure evaporation chamber, a solar heating device, a high-efficiency atomization device, a gas-liquid separation device, and a steam injection condensation device. The method comprises the following process flow: heated seawater is sprayed out in a mist shape through the high-efficiency atomization device, after the seawater is atomized, part of the seawater becomes water vapor and the other is seawater droplets, the seawater droplets are separated by the gas-liquid separation device, and then the water vapor is subjected to injection condensation to be turned into fresh waterfor daily use. The device provided by the invention makes full use of low-grade heat energy, has low energy consumption, reduces pollution by utilizing renewable energy, has low production costs, a high yield of the fresh water and a high salt yield, is suitable for large-scale promotion, and extremely facilitates daily life of residents in coastal areas and use by small and medium-sized fishingboats.

According to the present invention, a removing method comprises a following process of removing, after a salt is added to a waste liquid of Si-containing hydrofluoric acid, a precipitate generated due to the added salt. In such a way, a process for removing Si in the waste liquid is obtained. The salt is preferably selected from one or two or more salts from a fluoride metal salt and a chloride metal salt. The Si contained in waste liquid of the Si-containing hydrofluoric acid can be effectively reduced or removed by using the removing method.

The invention discloses a marine energy supply system with coupling of the seawater desalination function and the refrigeration function, and relates to the fields of seawater desalination, energy conservation and emission reduction. A seawater desalination supply assembly of the system includes a seawater pretreatment device, a condensation heat recovery device and a reverse osmosis device; a thermal method seawater desalination supply assembly includes a piston-typed compressor, a capillary desalination evaporator, and a reused seawater pretreatment device and condensation heat recovery device; and a refrigeration cycle assembly includes a refrigerator, and a reused piston-typed compressor, throttle valve and capillary desalination evaporator. The system provided by the invention can reuse and couple the reverse osmosis water making function, the thermal method water making function and the refrigeration function, can utilize the brine pressure energy obtained in the reverse osmosiswater making process to drive refrigeration cycle, and can also perform heat exchange on feed seawater of reverse osmosis and a steam obtained in the thermal method water making process, preheats thefeed seawater, realizes the secondary concentration of reverse osmosis desalting water in a thermal method, wherein the entire process does not require additional electric power input, and is very suitable for promotion.

The invention discloses a method for detecting norovirus in a food based on negatively charged membrane concentration. The method comprises the following steps: immersing a sample to be detected in an eluant, carrying out oscillation elution at room temperature, and centrifuging the above obtained solution to obtain a supernatant; adjusting the pH value of the supernatant to 2-4, and carrying out suction filtration by using a negatively charged filter membrane with the aperture of 0.45 [mu]m to obtain suction-filtered filter paper; and shearing the suction-filtered filter paper, extracting RNA, carrying out a real-time quantitative PCR to obtain the Ct value of the sample to be detected, and finally obtaining the content of the norovirus in the sample to be detected according to a norovirus NoV GI standard curve and a norovirus NoV GII standard curve. Compared with existing local standard (DBS13/001-2015), the method has the advantages of time saving, high efficiency, and increase of the virus enrichment rate by 5-10%.

The invention relates to a concentration method of a pseudo-ginseng total saponin extracting solution. A reverse osmosis process is mainly utilized to concentrate the pseudo-ginseng total saponin extracting solution. The concentration method provided by the invention has the advantages of favorable concentration effect and small loss.

The invention belongs to the technical field of pyrohydrolysis sludge anaerobic digestion liquid treatment, and discloses a treatment device and treatment method for pyrohydrolysis sludge anaerobic digestion liquid. The treatment device comprises a forward osmosis unit, a high-salt concentration unit, a water production tank and a PLC control unit which operate independently or simultaneously, thehigh-salt concentration unit is used for enabling the membrane treatment process of the forward osmosis unit to be carried out dynamically and circularly; and the forward osmosis unit comprises a rawmaterial liquid tank, a first filter, a liquid conveying pump, a circulating pump, an FO membrane, an absorbing liquid tank and a liquid level sensor. According to the treatment device and treatmentmethod of the invention, the forward osmosis unit and the high-salt concentration unit can be operated at the same time, so that the membrane treatment process of the forward osmosis unit is carried out dynamically and circularly. And the concentration rate of a concentrated draw solution can be up to 80%. And the problem that the pyrohydrolysis sludge anaerobic digestion liquid is difficult to treat is solved.

Provided are an oily wastewater treatment device that can process smoothly, can reduce costs for processing, and can perform wastewater treatment capable of purifying water to a level below the release standard value for public waters with little impact on the environment and an oily wastewater treatment method using same. An oily wastewater treatment device 1 comprises: a primary filter unit 7 that performs ultrafiltration on an oil-containing emulsion contained in oil-containing wastewater and that separates the oil-containing emulsion into an oil component and primary treated water; and a secondary filter unit 8 that performs a filtration treatment using a reverse osmosis membrane on the primary treated water separated by the first filter unit and that separates the primary treated water into low-molecular-weight impurities that were not removed by the primary filter unit and secondary treated water. The primary filter unit 7 is a filter having an ultrafiltration membrane filter structure of a tubular membrane type or a spiral membrane type, and the secondary filter unit 8 is a filter having a filter structure in which a plurality of disk-shaped reverse osmosis membranes is stacked.

The invention relates to the technical field of seawater desalination, in particular to a low-temperature multi-effect distillation seawater desalination system, which is used for increasing the seawater concentration rate. The Low-temperature multi-effect distillation seawater desalination system comprises a plurality of tandem evaporation sets with a reverse flow sequence and a direct flow sequence, a condenser communicated with the evaporation set with lowest running temperature in the reverse flow sequence, a seawater feeding pipeline communicated with the condenser, a steam feeding pipeline communicated with the evaporation set with highest running temperature in the direct flow sequence, and inter-group water pumps arranged on inter-group seawater pipelines. According to the low-temperature multi-effect distillation seawater desalination system, the tandem evaporation sets are divided into the reverse flow sequence and the direct flow sequence, a raw material-seawater enters the evaporation sets with the gradually increased temperature in the reverse flow sequence step by step according to the reverse flow sequence for evaporation and concentration, and the evaporated and concentrated seawater enters the evaporation sets with the gradually reduced temperature in the direct flow sequence step by step according to the direct flow sequence for further evaporation and concentration, so that the seawater concentration rate is increased.

The invention relates to a waste collecting device for a wire shearer. The wire shearer comprises a longitudinal revolving shaft, and is characterized by comprising a transversely-extending bedplate of which the bottom surface is provided with an opening, a waste collecting groove, and a waste guide groove which is positioned between the bedplate and the waste collecting groove and is provided with a longitudinal through groove; the through groove is communicated with the opening and the waste collecting groove; the bedplate is sleeved outside the revolving shaft through a circular installation hole; and the lower end of the opening is correspondingly communicated with the upper end of the through groove partially or totally along a cross section direction. The waste collecting device for the wire shearer disclosed by the invention comprises the bedplate and the guide groove which are matched with each other, and wire shearing waste enters the through groove of the guide groove through the opening on the bedplate and is recovered to a place under the guidance of the through groove, so that the concentration ratio and recovery rate of waste are increased, mechanical components of the wire shear are protected, and inconvenience in cleaning these components one by one is avoided; and waste is recovered during wire shearing, so that continuous normal work of the wire shearer is ensured.

The invention discloses a high-salt and high-nitrogen wastewater treatment device, and relates to the technical field of wastewater treatment. The high-salt and high-nitrogen wastewater treatment device comprises an air flotation pretreatment device and an MVR evaporator, the MVR evaporator comprises a compressor, a separator, a plate heat exchanger and a circulating pump, the circulating pump is connected between the plate heat exchanger and the separator, and a water outlet of the air flotation pretreatment device is connected with the separator through a wastewater conveying pipe. According to the invention, firstly, the air flotation pretreatment device is used for carrying out air flotation treatment on the wastewater to complete heavy metal removal and air flotation oil removal, then the MVR evaporator is used for carrying out evaporation concentration on the wastewater, and one MVR evaporator can replace one traditional wastewater treatment production line, so that the occupied space of the device is greatly reduced, and the effluent reaches the standard by 100%; the circulating pump is arranged between the separator and the plate heat exchanger, forced circulation is achieved, and the device has the advantages of being high in heat conduction efficiency, easy to expand, high in concentration rate, not prone to scaling and the like.

The invention relates to a use of commercial accharomyces cerevisiae as well as a high-concentration Chinese-date cyclic adenosine monophosphate extract and a preparation method of the high-concentration Chinese-date cyclic adenosine monophosphate extract. The commercial accharomyces cerevisiae is fermented in a Chinese-date cyclic adenosine monophosphate extract to obtain the high-concentration Chinese-date cyclic adenosine monophosphate extract. The preparation method comprises the steps of: obtaining the Chinese-date cyclic adenosine monophosphate extract; inoculating the activated commercial accharomyces cerevisiae in the Chinese-date cyclic adenosine monophosphate extract for fermenting; concentrating the fermenting solutions to obtain the high-concentration Chinese-date cyclic adenosine monophosphate extract. The prepared high-concentration extract, in which the Chinese-date cyclic adenosine monophosphate has the content of 1,000-1,300mg/L, can be directly used as health beverage for drinking, a large majority of active substances in the Chinese date are kept; and moreover, the preparation process is simple and economic without pollution.