43results about How to "Less investment" patented technology

The invention discloses a preparation method of fiber-base-fabric foamed epoxy resin cloth. The preparation method is characterized in that raw materials include fiber base fabric, foaming agent, epoxy resin, auxiliaries and organic solvent. The preparation method comprises the following steps: respectively adding the foaming agent, the epoxy resin and auxiliaries into organic solvent to be stirred and mixed until the foaming agent, the epoxy resin and the auxiliaries are completely dissolved to form a mixed solution, then impregnating the fiber base fabric into the mixed solution, and drying, reeling, packaging and warehousing the fabric after the fiber base fabric is fused with the mixed solution. The preparation method is convenient to operate and has the advantages of less investment, high efficiency, low cost and the like.

The invention relates to an integrated treatment device for steel pickling waste liquid. The device comprises a replacement chamber, an ionization chamber, an alkalization chamber, a precipitation chamber, a mixing chamber, an adsorption chamber, a filtering chamber and a clear water chamber. In the treatment process, heavy metal simple substance precipitates in the pickling waste liquid are obtained by means of replacement, acid radical ions and cations containing iron ions in the steel pickling waste liquid are obtained by means of ionization, ferric hydroxide precipitates are generated fromferric iron ions in the waste liquid in an alkalization manner, mixed precipitation, adsorption and filtration treatment are carried out subsequently, and finally, up-to-standard water is discharged.The treatment device can be used for effectively treating the steel pickling waste liquid, and is simple and practical in method, low in investment, high in recovery rate of regenerated acid and ferric salt and suitable for medium and small enterprises.

The invention discloses an elevation-type micro-power MBR apparatus including a water collection tank and a sewage lifting pump arranged on the bottom thereof. An output end of the sewage lifting pump is connected into an anoxic tank through a sewage pipeline and is used for distributing water uniformly through a hole pipe vertically disposed on the bottom of the anoxic tank. The upper part of the anoxic tank is communicated with an MBR membrane tank. An MBR plate membrane assembly is arranged in the MBR membrane tank. The upper part of the MBR plate membrane assembly is connected to a membrane water outlet electronic valve, which is arranged externally, through an arranged membrane assembly water outlet pipe. The lower part of the MBR plate membrane assembly is stretched to the bottom of the anoxic tank through an arranged nitration liquid backflow apparatus. The apparatus is high in automation degree and achieves unattended operation. The apparatus is greatly reduced in operation energy consumption and is almost operated under micro power, so that investment on equipment is reduced and a nitration liquid backflow pump and a sucking pump are avoided. The apparatus can be assembled according to different water load and irregular landforms, so that damage on surrounding environment due to installation of equipment is reduced as more as possible.

The invention provides a gelatin extraction process for preparing gelatin through an enzyme method. The gelatin extraction process comprises: 1) adding bone powder into a gelatin extraction device, adding water, and heating to a temperature of 40-70 DEG C; 2) adjusting the PH value to 2-11, adding enzyme, extracting a gelatin liquid after 1-10 h, adjusting the PH value to 2-10, maintaining for 1-3h, and adjusting the PH value of the gelatin liquid to 5.5-6.5; and 3) carrying out filtration separation on the gelatin liquid and the solid residue. The invention further provides a gelatin extraction apparatus for preparing gelatin through an enzyme method, wherein the apparatus is provided with a material inlet, a gelatin outlet and a stirring device, the stirring device comprises a stirringshaft and paddle blades, and the grate or the similar structure of the gelatin extraction apparatus in the traditional gelatin process is not arranged in the apparatus of the present invention. Compared to the traditional alkali gelatin process and the traditional alkali gelatin apparatus, the gelatin extraction process and the gelatin extraction apparatus of the present invention have advantagesof shortened production period, substantially improved efficiency, and improved gelatin quality stability.

The present invention discloses one kind of novel all-glass vacuum solar heat collecting tube and its manufacture process. The vacuum solar heat collecting tube includes inner and outer glass tube with two end ring sealed, and features that at least one end is specially shaped end comprising inner and outer tubes, rotary deformed transition section and short tube and with at least one thin-wall transition part easy to deform elastically. During the manufacture process, the ring hole in some end between the inner and the outer tubes is used in vacuum deairing and vacuum sealing before being processed into the tube mouth. There are no special deairing tube and no conic sealing joint. The present invention has simple structure, easy manufacture and low damage probability, and may be used widely in various kinds of solar water heater.

The invention which discloses a method for processing electroplating wastewater belongs to the technical field of the chemistry. The method comprises the following steps: 1, stratifying by allowing the electroplating wastewater to stand to remove organic matters; 2, successively adding sponge iron to the electroplating wastewater, and successively separating the electroplating wastewater and sediments to recover the sediments; and 3, adding an oxidant to the electroplating wastewater to oxidize divalent iron ions into trivalent iron ion sediments to form a flocculant. The method has the advantages of simple process, small investment, low cost, effective recycle of metal ions in the wastewater, resource saving, no environmental pollution, and realization of zero emission.

The invention discloses a feed additive by mixedly fermenting shrimp heads and vegetable feed proteins and a processing method thereof. The method comprises the following steps of: performing squeezing and crushing, pulping with water, and filtration and separation on the shrimp heads to separate out shrimp shells so as to obtain a shrimp paste raw material; mixing the shrimp paste and the vegetable feed proteins according to a proportion, adding bacteria for solid fermentation, and drying and crushing to prepare fermented feed protein powder; and drying the separated shrimp shells to prepare raw materials of chitosan and shrimp shell powder. The method has the advantages of simple process, small equipment investment and low cost; and the feed additive has the advantages of full aroma of the fermented feed protein powder, good palatability, high utilization rate of proteins, rich beneficial functional nutrients such as astaxanthin, small peptide, probiotics and the like, wide application to aquatic and livestock and poultry feeds, improvement of survival rate, good animal growth effect, good feed attraction to aquatic animals, capacity of replacing fish meal in the livestock and poultry feeds, capacity of greatly replacing fish meal in high-grade aquatic feeds, remarkable reduction of feed cost, contribution to environmental protection, power saving, efficiency improvement, and remarkable social and economic benefits.

The invention relates to a preparation method for a high-purity betaine phosphate. The preparation method comprises the following steps: (1) obtaining a betaine mother liquor; (2) obtaining a betaine concentrate; (3) obtaining a betaine-methanol solution; (4) obtaining a betaine phosphate crude product; and (5) dehydrating and drying the obtained betaine phosphate crude product to obtain the high-purity betaine phosphate finished product. The product is good in quality, with purity of 99% or more, yield of 97% or more and a by-product sodium chloride content of 0.1% or less. The prepared betaine phosphate not only completely satisfies requirements of feed additives of livestock and poultries, but also satisfies demands of industries of foodstuff, cosmetics, medicines, biochemical engineering and the like on the high-purity betaine phosphate. By changing the feeding manner of trimethylamine, that is liquefied trimethylamine is used to replace a 30% trimethylamine aqueous solution, so that under a specific reaction condition, power consumption is reduced by 10%, and reaction rate and product yield are improved.