302results about How to "Water retention" patented technology

The invention relates to a sintered permeable environmental-friendly brick produced by using ceramic waste residue and a manufacturing method thereof. The manufacturing method is characterized by comprising the following steps of: stirring ceramic waste residue powder, waste glass powder, waste porcelain fragment powder, municipal foundation waste sludge powder, calcium oxide, calcium sulfate, bentonite, talc powder, garbage ash residue powder, waste plant powder and water serving as raw materials to form a wet mixture, and performing mechanical vibration and extrusion molding to obtain the lower-layer brick of the permeable brick; uniformly distributing a layer of fine fabric on the upper part of the lower-layer brick of the permeable brick by using a secondary distributing machine, manufacturing a ceramic waste residue sintered permeable environmental-friendly unburned brick under the pressure of 25 to 30MPa and naturally drying; and feeding the molded and naturally-dried ceramic waste residue permeable environmental-friendly unburned brick into a tunnel kiln for roasting, controlling the temperature to be between 1,150 and 1,200 DEG C and burning the unburned brick to obtain the ceramic waste residue sintered permeable environmental-friendly brick product. Different specifications of vegetation bricks can also be prepared from the raw materials. The product has the advantages of certain water permeability, air permeability and water retentivity, multiple functions of reducing temperature and noise, regulating climate, eliminating urban heat island effect, improving air quality, maintaining surface water circulation and the like, high strength, no pollution, low cost and good benefit, and meets the requirements of energy conservation, emission reduction, environmental protection, and the development of low carbon economy in China.

The invention belongs to the technical field of mulching films and particularly discloses a liquid-state mulching film and preparation and use methods thereof. The main technical scheme is as follows: the preparation and use methods comprise the steps of taking sludge, and adding a sterilizing agent prepared from water-dissolved trichloroisocyanuric acid, so as to deodorize and sterilize; then, adding humic acid raw powder, inorganic salts and water, mixing, stirring and homogenizing, then, grinding and reacting, so as to prepare a master batch formed by a paste body; taking polyacrylamide and derivatives thereof, lignosulfonate or / and cellulose derivatives, so as to form a sub-material with film forming, penetration, dispersion, chelation and water retention properties; during use, dissolving the sub-material by water, adding the dissolved sub-material into the master batch, stirring to prepare a porridge-like body, then, adding water, uniformly stirring and diluting, and spraying by a mist sprayer, thereby forming the mulching film. The liquid-state mulching film is prepared in a manner that the sludge serves as a main material, so that the problem of sludge treatment is basically solved, especially, the waste is changed into the valuable, and the land capability can be greatly increased; the liquid-state mulching film has the functions of increasing temperature, preserving soil moisture and promoting crop growth, the elimination of white pollution is realized, the flying dust factor of agriculture is controlled, the soil is improved, water resources are conserved, the revenue of farmers is increased, the expenditure of farmers is reduced, and the sustainable development of agriculture is promoted.