30results about How to "Fast natural degradation" patented technology

The invention discloses an ecological liquid mulch film for farmland weeding and its preparation method and application method. It is made of konjac flour, industrial gelatin and quicklime as raw materials, crushed and degranulated, measured and bagged to make raw powder and fine materials, and then formulated according to weight. By adding glycerol and water and stirring to make a stock solution and spraying it on the planting ground, a liquid mulch film with good planting ecological performance can be formed. Its film-forming mechanism is: use konjac flour (the main active ingredient is konjac glucomannan) with the biological characteristics of gel film-forming as a polymer film-forming substrate, use glycerol as a plasticizer, and industrial gelatin as a reinforcement The agent can improve the performance of liquid mulch. The invention has the outstanding advantages of rich and cheap raw material sources, low production cost, convenient use, good performance of light transmission, heat preservation, fertilizer and moisture conservation, fast degradation speed, and no environmental pollution. The multi-functional ecological liquid mulch new product has excellent application prospects in vast agricultural planting areas.

The invention discloses a cigarette made of reconstituted tobacco obtained through a pure papermaking method and belongs to the technical field of novel cigarette products. The cigarette is characterized in that tobacco shred, cigarette paper, a filter stick, formation paper and splicing paper of the cigarette are all made of the reconstituted tobacco obtained through the papermaking method The cigarette made of the reconstituted tobacco obtained through the pure papermaking method is capable of achieving comprehensive utilization of agricultural resources, good in harm-mitigation and tar-reduction effect, excellent in smoking smell, low in production cost and environmentally friendly.

The present invention relates to a Streptomyces violaceoruber and its molluscicides, wherein said Streptomyces violaceoruber is Streptomyces violaceoruber I which is preserved at China typical culture preservation center (CCTCC) with a preservation identification serial number of M203102 and a preservation date at 20030803. The bacterial strain is separated and activated by adopting Gao synthesized number 1 vegetable gelatine flat plate or inclined surface culture medium, and the Streptomyces violaceoruber bacterium solution with molluscidal functions is then cultured through fermentation by using a swing bottle; the Streptomyces violaceoruber bacterium solution and the plant pelleting additive are mixed to constitute a molluscicide. The Streptomyces violaceoruber in accordance with the present invention possesses stronger molluscidal effect, and the molluscicide formulated by the Streptomyces violaceoruber bacterium solution and plant pelleting additive possesses the following advantages: 1, without toxic and side effects and pollutions for the environment, it can be naturally degraded rapidly; 2, without toxic and side effects for persons and animals, it can maintain a long molluscidal time (longer than 15 days); 3, it is convenient to store, convey and use; 4, it has more improved molluscidal effect than pure bacterium solution and pure bacterium powder, with reduced drug amount; 5, relative pure plant powder, it has improved medical effects and prolonged time for maintaining the medical effects.

The invention relates to a Xanthobacter and its snail killer. A snail bacterium, namely Xanthobacter autotrophicus is a Xanthobacter autotrophicus II whose collection unit. It uses beef peptone agar plate or slope culture medium to separate bacterial strains, obtains snail-killing Xanthobacter autotrophicus solution (a hundred million grades / ml) by bottle-shaking fermentation process; and the application of Xanthobacter autotrophicus as a snail killer is that: making ultrasonic processing on the Xanthobacter autotrophicus solution and plant material forming agent, then mixing them to prepare a novel biological snail killer, which has the characters: (1) quickly killing the snail, and effectively preventing the snails from climbing up to flee; (2) harmless to non-target living things and fish, fast to naturally degrade and no pollution; (3) no toxic and side effect, and time of maintaining snail-killing pesticide effect 15 days long; (4) convenient to store, transport and use; etc.

The invention relates to the technical field of soil remediation, in particular to a method for remediating polluted soil and groundwater. The method comprises: 1) constructing an injection well upstream of the groundwater in the polluted area, and constructing a discontinuous reaction wall downstream of the groundwater in the polluted area, wherein the pollutants in the polluted area include volatile and / or semi-volatile organic compounds ; 2) Inject biosurfactant slurry into the injection well, so that the biosurfactant migrates to the polluted area under the action of groundwater to contact the pollutants therein, and the obtained oil-water mixture flows to the discontinuous reaction wall, Under the barrier of the impermeable wall area, enter the permeable reaction area for reaction. The method of the invention can effectively remove volatile and semi-volatile organic compounds in polluted soil and groundwater, and is also particularly suitable for repairing sites where excavation, extraction and injection operations cannot be performed above the polluted area.

The invention relates to the technical field of soil remediation, in particular to a method for remediating polluted soil and groundwater. The method comprises: 1) constructing an injection well upstream of the groundwater in the polluted area, and constructing a discontinuous reaction wall downstream of the groundwater in the polluted area, wherein the pollutants in the polluted area include volatile and / or semi-volatile organic compounds ; 2) Inject surfactant slurry into the injection well, so that the surfactant migrates to the polluted area under the action of groundwater to contact the pollutants therein, and the obtained oil-water mixture flows to the discontinuous reaction wall, where Under the barrier of the impermeable wall area, enter the permeable reaction area for reaction. The method of the invention can effectively remove volatile and semi-volatile organic compounds in polluted soil and underground water, and is also particularly suitable for repairing sites where excavation, extraction and injection operations cannot be performed above the polluted area.

The invention discloses polycyclic aromatic hydrocarbon and chromium combined polluted soil synergistic leacheate in the electroplating industry and application thereof. Polluted soil particles are crushed and screened and then the soil particles are put into soil multi-element ex-situ leaching remediation equipment, vegetable oil and sophorolipid compound mixed leacheate are added, meanwhile, thecontinuous ex-situ synergistic leaching is carried out by adopting an ultrasonic strengthening and heating treatment mode. Then humulus japonicus is inoculated into the leached soil, and a nutrient source buffer solution which is equal to 1-2.5% of the mass of the soil is applied. The repair is completed through artificial culture growth. By means of the method, organic-inorganic composite pollutants such as polycyclic aromatic hydrocarbon and chromium in the soil can be efficiently leached and removed at the same time, the humulus japonicus is inoculated and exogenous nutrient substances areadded, the deep degradation of residual polycyclic aromatic hydrocarbon in the soil after leaching is facilitated, and the rapid recovery of microbial ecological functional diversity of the soil environment after leaching is also facilitated.

The invention discloses a waterless closestool, which comprises a closestool body and a suction device. The closestool body comprises a urinal, a seat board and a cover plate, wherein the cover plate is movably arranged on the urinal; and the seat board is movably arranged between the cover plate and the urinal. The suction device is provided with a suction cavity, wherein one end of the cavity is communicated with an exhaust port of the urinal, while the other end is used for connecting an external drain outlet. The suction device in a start-up state is used for closing one end connected with the external drain outlet, generating negative pressure for sucking contents in the urinal in the suction cavity, and relieving the sealing of the end of the suction cavity connected with the external drain outlet when the negative pressure disappears. The waterless closestool sucks egesta from the urinal and discharge the egesta through the suction cavity by adopting the negative pressure of the suction device and fluid which flows at high speed; compared with the conventional closestool using water to flush, the waterless closestool only needs little water or even does not need water, thereby saving great amount of water, and generating remarkable economic and social benefit.

The invention relates to the technical field of the thermoplasticity elastomer, in particular to a water-proof moisture-permeable polyurethane thermoplasticity elastomer and a preparation method thereof. The water-proof moisture-permeable polyurethane thermoplasticity elastomer is prepared from polyurethane colloidal particles, wherein the polyurethane colloidal particles are prepared from the following raw materials in parts by weight: 40-90 parts of polyester polyol or polyether polyol, 15-45 parts of diisocyanate and 3-12 parts of chain extender; the polyester polyol is obtained in a way that at least one of polyatomic acid and polyester and polyhydric alcohol are subjected to dealcoholization and dehydration condensation according to a mole ratio of 1to (1.01-1.2) in a vacuum fusion method, the hydroxyl value of the polyester polyol is 20-120mgKOH / g, and the acid value of the polyester polyol is 0.1-2mgKOH / g. The thermoplasticity elastomer has the advantages of good plasticization processing, high natural degradation speed and environmental protection, can be regulated according to the moisture-permeable requirements and can also resist bacteria and avoid dust mists.

The invention is a preparing method of the low-molecular chitosan quaternary-ammonium-salt complex iodine sterilizing solution, its character: mixing and agitating the low-molecular chitosan quaternary-ammonium-salt or low-molecular chitosan solution with one, two or all of dialkyl diquaterary ammonium salt, dialkyl quaterary ammonium salt, and methyl quaterary ammonium salt, then heating the mixed solution, adding with iodine, or iodine and iodate, preserving heat to react, and cooling to room temperature. It is an environmental-protection, strong-efficiency disinfectant, irritation and the toxicity lower, and the sterilizing effect more stable and permanent.