42results about How to "Continuous purification" patented technology

The invention discloses a method for separating and purifying epigallo catechin gallate (EGCG) by using a simulated moving bed (SMB) chromatography. The method is characterized in that: a tea leaf extract, which is tea polyphenol, is adopted as a raw material; EGCG is separated and purified by using an SMB chromatography system. According to the method, fundamental zones of the SMB are set as an eluting zone, a refining zone and an absorbing zone. The eluting zone is independent. Octadecylsilane chemically bonded silica ODS is adopted as a stationary phase, a mixed solution of alcohol and water is adopted as a mobile phase, and SMB separation are carried out two times upon a tea polyphenol raw material liquid, wherein one time is for removing impurities which are hard to elute, and the other time is for removing impurities which are easy to elute. The product is processed through a solvent removing process, such that the EGCG product is obtained. With the method, EGCG can be stably, continuously, and automatically purified from tea polyphenol in large scale, and with high efficiency. The recycling rate of the product is above 94%, and the purity of the product is above 96%. According to the invention, the stationary phase and the mobile phase can be repeatedly utilized, such that the cost is reduced. The invention belongs to green and environment-friendly separation engineering.

The application discloses a river channel ecological restoration system and restoration method, including a microbial breeding device for breeding microorganisms, an ecological hanging bed for planting plants to purify water, and transporting the microorganisms in the microbial breeding device to the ecological hanging bed. The control pipeline at the root system of the plant; a cultivation space is provided around the bottom of the ecological suspension bed, and the roots of the plants planted in the ecological suspension bed extend downwards into the cultivation space, and the lower side of the cultivation space is open; The output end of the control pipeline is connected to the cultivation space. This application sets up a cultivation space at the root system of the plants planted in the ecological suspension bed, and inputs functional microbial communities into the cultivation space to increase the content of functional microorganisms in the cultivation space, so that the plant root system can be kept in a highly active state, thus through the ecological suspension bed Purification effect on water body.

The invention belongs to the field of sewage treatment, and particularly relates to an immobilized microorganism-plant combined ecological treatment system and application. The system comprises a slow flow settling region and at least one purification region in sequential arrangement, wherein the purification region consists of a broad-crested weir and an immobilized microorganism packing pool; the front part of the broad-crested weir is connected with the slow flow settling region; the back end of the broad-crested weir is connected with the immobilized microorganism packing pool; the width of the slow flow settling region is identical to that of the bottom surface of a riverway; the bottom surface of the slow flow settling region is lower than the river bottom; the broad-crested weir is higher than the river bottom; the bottom surface of the immobilized microorganism packing pool is lower than the river bottom; three layers of packing of immobilized microorganisms are arranged in the immobilized microorganism packing pool; the packing sequentially includes a gradation cobblestone layer, a water supply sludge particle layer and a submerged plant planting region from bottom to top; rich nutritive salt and inorganic salt such as total phosphorus and ammonia nitrogen in a black and odorous water body can be continuously and efficiently removed; various contaminants can be treated; high applicability and continuity are realized; the water pollution treatment cost is reduced.