33results about How to "Reduce the probability of secondary pollution" patented technology

The application relates to a cleaning device. The cleaning device includes a cleaning tank and a settling tank. The settling tank is connected to the cleaning tank. Area; when cleaning, the cleaning liquid flows horizontally from the cleaning tank into the settling tank. When the cleaning device of the present application cleans the object to be cleaned, impurities such as residual glue are less likely to appear on the object to be cleaned, which can improve the cleaning effect of the object to be cleaned and reduce the probability of secondary pollution.

The invention discloses a high-quality harmless utilizing method of a hyperaccumulator. The high-quality harmless utilizing method comprises the following steps: smashing and drying the hyperaccumulator, and sieving through a sieve of which the density is 100 meshes; carbonizing at a carbonization temperature being 450 to 550 DEG C and in carbonization time being 25 to 35 minutes, thus obtaining acarbonized material; immersing the carbonized material by using an alkaline solution of which the mass percentage is 45 to 55 percent; drying at 90 to 120 DEG C for 10 to 15 hours after immersing for20 to 28 hours, thus obtaining an amorphous particulate carbon block; activating the amorphous particulate carbon block into an activated carbon coarse product under a nitrogen atmosphere, wherein the activating temperature is 750 to 850 DEG C, and the activation time is 25 to 35 minutes; drying for 10 to 15 hours, thus obtaining metal-containing activated carbon with a catalytic effect; grindingthe activated carbon, thus obtaining an activated product HA-AC; adding 5 to 15 percent of the activated carbon product HA-AC to biomass or other reaction raw materials; putting a swelled material ina supercritical reaction kettle, and carrying out sealing reaction at the reaction temperature being 380 to 600 DEG C and the reaction pressure being 22.1 to 30 MPa, thus obtaining a hydrogen-rich gas. The high-quality harmless utilizing method disclosed by the invention has the advantages that additional metal loading is not required, a complicated preparation technology and a longer preparationperiod are not required, heavy metal can be fully stabilized, and secondary pollution can be avoided.

The invention discloses a grabbing device. The grabbing device comprises a mounting component, rubbing assemblies and material collecting assemblies. Each rubbing assembly is mounted on the mounting component in a liftable mode and is further provided with at least two sets of rubbing components. The output ends of all the rubbing components are arranged in a back-to-back mode, and all the rubbingcomponents can be stretched and retracted in the laminating plane direction of workpieces. The material collecting assemblies are mounted on the corresponding rubbing components and are further provided with material collecting components. All the rubbing assemblies can drive the corresponding material collecting components to be opened and further raise the workpieces. The invention further provides a transfer mechanism. The transfer mechanism comprises a receiving assembly and the grabbing device. The transfer mechanism can be well matched with the grabbing device to carry separated non-woven fabrics, manual work can be replaced completely in the whole process, contact between people and films in the film detaching and bagging processes is reduced, secondary pollution probability of film fabrics is lowered, production efficiency and product safety and sanitation levels are effectively improved, stability is good, precision is high, the structure is compact and novel and the runningspeed is high.

The embodiment of the present invention discloses a grinding platform, a grinding device, a grinding method, and a silicon wafer; the grinding platform includes: a plurality of carrying disks for carrying silicon wafers; wherein, any two adjacent carrying disks A partition wall is arranged between them; a roller brush is arranged on one side of the partition wall, and the roller brush is used for scrubbing the grinding carrier and the silicon wafer; relative to the roller brush, it is arranged on the A liquid knife on the other side of the partition wall, the liquid knife is used to prevent the grinding waste liquid during the grinding process from overflowing to the surface of the silicon wafer to be ground.

The invention discloses an automatic packing machine for plastic oil bottles, which relates to the field of packing equipment. It includes a rack and a bottle feeding conveyor belt. One side of the bottle feeding conveyor belt is provided with a counting device, one side of the bottle feeding conveyor belt is provided with a bottle pushing plate, and the other side of the conveyor belt is horizontally provided with a bottle releasing plate and a bottle pushing plate. There is a bottle pushing mechanism on the side away from the bottle releasing plate; the frame is located at the discharge end of the bottle feeding conveyor belt with a rectangular first baffle plate, and the side away from the first baffle plate is provided with a second baffle plate of the bottle releasing plate There is a bottle feeding plate parallel to the bottle pushing plate above the bottle feeding plate, a lifting mechanism that drives it to rise and fall above the bottle feeding plate, and a bottle feeding mechanism above the bottle feeding plate. The movement of the bottle feeding plate and the bottle pushing plate The direction is the same; the discharge end of the bottle release plate is provided with a bagging mechanism, the side of the bottle release plate away from the bottle push plate is horizontally provided with a receiving table, and a heat sealing mechanism for sealing is arranged between the bottle release plate and the receiving table. , The upper surfaces of the bottle pushing conveyor belt, the bottle releasing plate and the receiving table are coplanar. The present invention has the advantage of high packing efficiency.

The invention discloses a high-purification automatic impurity-removing and tea-sterilizing process comprising the following steps: charging, fine processing, weighting and packaging. In the fine-processing step, tea is primarily screened by adopting a winnowing mode and residual impurities in the tea are removed by using a manual-selection mode; aroma-extracting and sterilizing working procedures are set after the manual-selection step: tea moisture is removed, tea aroma is improved and bacteria in the tea are killed; far infrared rays are adopted to bake and heat the tea so as to greatly improve the tea quality; meanwhile, the far infrared rays have the thermal effect and the biological effect, and keep the activity of the tea and the nutrition and the luster of food to a maximum extent; and the automatic processing degree is high. The invention has the advantages of intelligently controlled technological process, compact connection, strong continuity, effectively controlled secondary pollution, little manpower consumption and high tea-making efficiency.

The invention relates to the field of wastewater comprehensive utilization, and particularly relates to a comprehensive utilization method of wastewater containing phosphorus and fluorine. The comprehensive utilization method comprises the following steps: carrying out twice neutralization on the wastewater containing phosphorus and fluorine, and controlling the final pH value after each time of neutralization; separating calcium fluoride from wastewater according to the solubility product of calcium fluoride and calcium orthophosphate, so as to enable the main ingredients of wastewater to be calcium orthophosphate and silica gel; separating silica gel by centrifugal separation to obtain a waste liquid containing phosphorus; carrying out secondary neutralization on the waste liquid containing phosphorus to enable the pH value to be 4-7; after generating calcium hydrophosphate, carrying out cooling crystallization treatment; separating calcium hydrophosphate to obtain a clear liquid, so as to realize treatment on wastewater containing phosphorus and fluorine. By adopting the comprehensive utilization method, maximal reutilization of the phosphorus fluorine resource is realized, the by-product silica gel is generated, the product additional value is increased, and the cost of treatment on wastewater containing phosphorus and fluorine is reduced.