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1088results about How to "Cause harm" patented technology

Immobilized algal-bacterial symbiotic system for processing petroleum pollutants and application thereof

InactiveCN103849615AEfficient degradationContinue to play the role of remediation of polluted environmentSeawater treatmentWater contaminantsAntibiotic YBioremediation
The invention belongs to the technical field of bioremediation of marine oil pollution, and relates to an immobilized algal-bacterial symbiotic system for processing petroleum pollutants. The immobilized algal-bacterial symbiotic system is prepared by the following steps: (1) selection and axenic cultivation of algae species, firstly carrying out lysozyme and sodium dodecyl sulfate (SDS) sterile pretreatment on chlorella algae fluid, and then inoculating into a BG11 culture solution containing antibiotics to carry out sterile cultivation, so as to obtain sterile chlorella algae fluid for later use; (2) selection and cultivation of petroleum degrading bacteria; (3) preparation of composite carrier bacteria algae gel balls, namely immobilizing the sterile chlorella algae fluid obtained in the step (1) and the petroleum degrading bacteria obtained in the step (2) by adopting sodium alga acid and polyvinyl acetate (PVA) as immobilized carriers, and finally obtaining the immobilized algal-bacterial symbiotic system. The immobilized algal-bacterial symbiotic system can float on the water to carry out degradation of petroleum pollution, and is free of secondary pollution, free of toxic action on microorganisms, rapid in reaction speed, stable and reliable in operation, less in microorganism loss, and free of separation.
Owner:ZHEJIANG MARINE DEV RES INST

Two-step activation preparation method of activated carbon and application thereof in supercapacitor

The invention discloses a two-step activation preparation method of activated carbon and application thereof in a supercapacitor. The method comprises the following steps that blind coal is smashed and sieved, and an additive and a binder are added to be stirred; the mixture is added into a muffle furnace to be carbonized and then, shifted into a tubular activating oven, activated gas is introduced to be activated; diluted hydrochloric acid is used for acid pickling, filtering is performed, then, distilled water is used for washing, and a KOH solution is used for dipping; one-time activated carbon is placed into the activating oven, and protective gas is introduced to be activated; diluted hydrochloric acid is used for acid pickling, filtering is performed, then, distilled water is used for washing till pH is 7, and then drying is performed; reactivated de-ashing activated carbon is uniformly mixed with ethylene and polytetrafluoroethylene after being ground, the mixture coats foamed nickel, and after drying is performed, tabletting is performed to prepare the supercapacitor. Blind coal is adopted as a raw material, reaction conditions are mild, on the basis of the conventional activated carbon production technology, reactivation and de-ashing are performed, the synthesis cost is greatly lowered, and the huge application and popularization potential is achieved in the field of activated carbon for the high-performance supercapacitor.
Owner:CHINA UNIV OF MINING & TECH

Biological treatment method for waste mud in petroleum and natural gas exploration drilling work

The invention discloses a biological treatment method for waste mud in petroleum and natural gas exploration drilling work, which is characterized by comprising the following steps of: a, forming a microbial treatment layer, namely inoculating special microbial strains to the waste mud in a weight ratio of 3-5: 100, mixing the strains and the waste mud uniformly, stirring the mixture and natural soil with water content of 10 to 10 percent and grain diameter of less than 0.5 centimeter uniformly according to the density condition of the waste mud in a following mode to form the microbial treatment layer, adding the natural soil in an amount which is 2.5 to 3 times that of the waste mud into the waste mud with density of 1 to 1.5kg/L, adding the natural soil in an amount which is 2 to 2.5 times that of the waste mud into the waste mud with density of 1.5 to 2.5kg/L, and controlling the water content of the microbial treatment layer to be between 25 and 30 percent; b, treating the soil; and c, treating plants. The method can solve the technical problem that effusion enters underground water to pollute a water source because the natural soil with high water content and large grain diameter is easily scoured by hard rain under the condition that pollutants in a pretreatment mixture are not yet effectively degraded in the prior art.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1

Alum-free vermicelli and preparation method thereof

The invention discloses alum-free vermicelli which is prepared from the following raw materials in parts by weight: 0.3-0.5 part of compound gluten fortifier, 0.3-0.5 part of compound phosphate, 2.5-5.0 parts of denaturized starch, 100 parts of starch and a proper amount of water through the steps of mixing, stewing, freezing and airing. The invention also discloses a preparation method of the alum-free vermicelli which is prepared from the raw materials in the weight ratio through the following steps of pulping, filtering, purifying, dewatering, pouring starchy sauce over the dish, curing, vacuumizing, forming, ageing, airing and the like. The vermicelli provided by the invention contains no sulfur dioxide, lead or total arsenic, the aflatoxin content accords with the national standard, the lead content is far lower than the national standard requirement not higher than 100mg / kg; fine sand and dust mixed in the starch can be sufficiently removed through the filtering and purifying processes, and the vermicelli is pure in color and luster and contains the dust content which is not higher than 0.7%; and due to the adoption of the periodical ageing process, the inside and the outside of the vermicelli are frozen uniformly, no barring and white tip phenomena are caused, the broken bar rate is not higher than 3% after rehydration, vermicelli is straight in bar shape, smooth in taste and free of foreign smell.
Owner:淮安甜心欣食品有限公司

Transition metal doped cerium and titanium compound oxide catalyst for selective catalytic reduction of nitric oxide by ammonia

The invention relates to a transition metal doped cerium and titanium compound oxide catalyst for selective catalytic reduction of nitric oxide by ammonia, and a preparation method thereof. The catalyst in the invention is a transition metal (iron, tungsten and molybdenum) doped cerium and titanium compound oxide catalyst. The preparation method of the catalyst is a co-precipitation method, which comprises the following steps of: preparing mixed solution from cerium salt, titanium salt and salt corresponding to one or more transition metals of iron, tungsten and molybdenum, and continuously stirring for 3 to 15 hours at the temperature of between 50 and 150 DEG C by using one of ammonia water, sodium hydroxide, sodium carbonate, ammonium bicarbonate or urea; and filtering, washing, baking and calcining. In the invention, the adopted raw materials are non-toxic and harmless, the preparation method is simple and easy, the prepared catalyst has the characteristics of high catalytic activity, excellent N2 generation selectivity, broad operation temperature window, high space velocity reaction condition adaptability and the like, and is suitable for mobile sources represented by tail gas of diesel vehicles, as well as stationary source nitric oxide catalytic purification device represented by flue gas of coal fired power plants.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI

Metallographic corrosive agent for amorphous alloys and observation method for metallographic structures of amorphous alloys

The invention provides a metallographic corrosive agent for amorphous alloys, which comprises a primary corrosive agent and a secondary corrosive agent, wherein the primary corrosive agent is mixed liquor of hydrofluoric acid, phosphoric acid and oxalic acid, and the secondary corrosive agent is water liquor of FeCl3 (ferric trichloride) and KCl (potassium chloride). The invention further relates to an observation method for metallographic structures of the amorphous alloys, which includes the steps of placing the amorphous alloys under a metallographic microscope after rough grinding, fine grinding and polishing for the surfaces of the amorphous alloys and after corroding the amorphous alloys with the metallographic corrosive agent. The steps of corroding the amorphous alloys with the metallographic corrosive agent include: a etching the surfaces of the amorphous alloys with the mixed liquor of the hydrofluoric acid, the phosphoric acid and the oxalic acid, and b wiping the surfaces of the amorphous alloys with the water liquor of the FeCl3 and the KCl. The metallographic corrosive agent is beneficial to observation of the metallographic structures of the amorphous alloys and evaluation of the quality of the amorphous alloys.
Owner:SUZHOU SHIHAO BUILDING MATERIAL NEW TECH ENG

Intelligent plug and socket for safe power use

The invention relates to an intelligent plug and a socket for safe power use. The plug comprises a plug housing and insertion sheets. The plug housing is provided therein with a switch sliding plate and a moving block. A first baffle plate and a second baffle plate are capable of being inserted into the clamping grooves corresponding to the insertion sheets, the switch sliding plate and the moving block. The direction guide column of the moving block penetrates the electromagnetic coils. A first spring is fixed between the plug housing and the insertion sheets; a second spring is fixed between the push plate of the moving block and the plug housing; the plug housing is provided therein with a coil switch and a position limiting switch. For the conductive wire between the two insertion sheets, the two insertion sheets are connected in series with the electromagnetic coils, the coil switch and the position limiting switch. The socket comprises an insertion and connection cavity that matches the plug housing. The insertion and connection cavity is provided therein with a first socket clamping block that clamps with the sliding plate clamp on the switch sliding plate and a second socket clamping block that clamps with the operation port on the plug housing. According to the invention, in the plugging process, the sheets could automatically pop out and are collected so as to avoid electric shocks and igniting accidents. When plugged, the plug and the sockets are well fixed, providing safe and convenient use.
Owner:国网山东省电力公司招远市供电公司
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