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59results about How to "Long-term effect" patented technology

Advanced sewage treatment technology

The invention belongs to the field of environmental protection and particularly relates to an advanced sewage treatment technology which comprises the following steps: after being subjected to biochemical treatment, sewage sequentially passes through a preoxidation unit, an electrolysis catalytic oxidation unit, a regeneration unit, a catalyst ultrasonic cleaning unit and a catalyst separating unit to meet the discharge standard. The static bed catalytic oxidation technology is adopted to reduce the COD load to a certain level, so that the follow-up COD load of a subsequent electrolysis catalytic oxidation unit is also reduced, the improvement on the sewage treatment depth is facilitated, and the effluent quality is better and more stable. With a static bed catalytic oxidation unit arranged in front, heavy metals and other materials in water toxic to a catalyst can be intercepted, so that a suspended particle catalyst with higher production cost can be protected, and the service life of the catalyst is prolonged. By timely adjusting the dosage of an oxidizing agent, the problem about load fluctuation can be instantly solved, the problem that the suspended particle catalyst is attached by dirt is also solved, the recycling of the suspended particle catalyst is realized, and the cost is lower.
Owner:CHINA PETROLEUM & CHEM CORP

Hair clipper lubricating device and hair clipper with same

The invention provides a hair clipper lubricating device and a hair clipper with the same. The hair clipper solves the problems that lubricants volatilize and become dry due to long-term friction of a moving blade and a static blade of an existing hair clipper and long-term lubrication cannot be achieved. The hair clipper comprises a shell, wherein the shell is provided with an adjusting handle, a control switch and a hanging ring and further comprises the hair clipper lubricating device. The hair clipper lubricating device comprises a static blade and a moving blade, wherein the moving blade is fixedly connected with a moving blade base and located above the static blade, the moving blade transversely slides relative to the static blade and is matched with the static blade, the moving blade is provided with a blade-back matching block, the blade-back matching block is matched with a static blade base in a contacting mode, a lubricating material is arranged between the moving blade and the moving blade base and is provided with a bent portion and a flat and straight portion, the bent portion is in contact with the static blade, and the flat and straight portion is higher than the static blade in the horizontal direction. Lubrication of the hair clipper is precise, the use rate of the lubricants is improved, the service life of the lubricating material is prolonged, and the effect of long-term lubrication is achieved.
Owner:ZHEJIANG PAITER ELECTRIC

Mosquito-repellent and insect-resistant health coating with natural plant extraction solution and preparation method thereof

InactiveCN107474648AEfficient mosquito repellent and insect repellentNo pollution in the processAntifouling/underwater paintsPaints with biocidesEmulsionSynthetic resin
The invention discloses a mosquito-repellent and insect-resistant health coating with a natural plant extraction solution and a preparation method thereof, and relates to the technical field of coatings. The mosquito-repellent and insect-resistant health coating is prepared from the following components in parts by weight: 50-70 parts of waterborne synthetic resin emulsion, 10-25 parts of filler, 0.1-0.5 part of wetting agents, 0.2-0.4 part of dispersants, 0.2-0.6 part of defoaming agents, 5-10 parts of natural plant extraction solution, 2-10 parts of plant essential oil, 10-30 parts of deionized water, 100-250 parts of titanium dioxide, 0.2-1 part of thickening agents, 0.3-0.8 part of flatting agents, 0.1-0.3 part of pH regulators and 0.1-0.15 part of film forming additives, wherein the natural plant extraction solution is an azadirachta indica plant extraction solution. The coating has the characteristics that the coating is capable of efficiently repelling mosquitoes and resisting insects and is free of pollution to people and surrounding environments, and effective components of the plant extraction solution are slowly released in the coating and exert the effects for a long time.
Owner:HEBEI CHENYANG INDAL & TRADE GROUP CO LTD

Eucryptorrhynchus chinenis ground capture device and method

The invention provides an Eucryptorrhynchus chinenis ground capture device and method; the device comprises a mesh covering the basal part of an ailanthus tree, and male and female sticking buckles tightly attached to the basal part of the trunk; the four edges of the mesh are respectively wrapped by 100-mesh nylon gauze; a middle point connecting line of two parallel edges of the mesh is provided with an opening; two sides of the opening are respectively wrapped by 100-mesh nylon gauze; the male and female sticking buckles are respectively sewed on the 100-mesh nylon gauze of the two edges of the opening after being wrapped. The device is simple in making technology, convenient in operation, low in cost, ling in life, cannot affect normal growth of the ailanthus tree, and cannot pollute environment; Eucryptorrhynchus chinenis overwintering imago and eclosion imago will unearth and climb tree so as to damage ailanthus tree branches; the device and method can keep capturing Eucryptorrhynchus chinenis overwintering imago and eclosion imago in long time, so the Eucryptorrhynchus chinenis overwintering imago and eclosion imago cannot harm the tree and mate and lay eggs; the device and method have good capturing effect for underground pests like Chinese mole cricket, chafer imago and larva.
Owner:BEIJING FORESTRY UNIVERSITY
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