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13324 results about "Ultrafiltration" patented technology

Ultrafiltration (UF) is a variety of membrane filtration in which forces like pressure or concentration gradients lead to a separation through a semipermeable membrane. Suspended solids and solutes of high molecular weight are retained in the so-called retentate, while water and low molecular weight solutes pass through the membrane in the permeate (filtrate). This separation process is used in industry and research for purifying and concentrating macromolecular (10³ - 10⁶ Da) solutions, especially protein solutions.

Method for producing feed additive from livestock and poultry breeding wastewater and purifying breeding wastewater to reclaimed water

The invention relates to the fields of environmental technology and the breeding and processing of microalgae, in particular to a method for producing feed additive from livestock and poultry breeding wastewater and purifying breeding wastewater to reclaimed water. The method is characterized by comprising the following steps that: wastewater enters an acidification adjusting tank through a grille, and the acidified wastewater enters an anaerobic biochemical reactor for treatment and then enters an aerobic biochemical reactor; after the aerobic biochemical treatment, the obtained biogas slurry enters a settling tank for settling, the supernatant enters a membrane bioreactor for further aerobic treatment and is filtered by an ultrafiltration membrane, the generated ultrafiltration clear liquid is sterilized and neutralized and then enters a photobioreactor, algae are added into the photobioreactor to perform microalgae cultivation, and the algae liquid is discharged from the photobioreactor and then enters a flocculation and settling tank; and after flocculation and settling, the supernatant is used for water recycling, the concentrated algae liquid at the bottom enters a filter, and the separated microalgae slurry enters a fermentation / enzymolysis pot (tank) to perform fermentation / enzymolysis to be used as the feed additive. The invention has the advantages of high economic adaptability, zero discharge and the like.
Owner:蔡志武 +1

Treatment method of high saline wastewater

The invention discloses a treatment method of high saline wastewater, and relates to the treatment technology. The method comprises the following steps: preparing high saline wastewater, regulating in a regulating pond, chemically pre-treating in a settling pond, filtering in a V-shaped filter pond, the first section ion exchange softening, ultrafiltering in an ultrafiltration system, reverse osmosis treating through a first section reverse osmosis system, the second ion exchange softening, nano-filtering through a high-pressure nano-filtration system, nano-filtering to produce water, reverse osmosis treating through a second section reverse osmosis system, concentrating through a first section high-pressure flat film system, MVR evaporating and crystallizing to obtain the industrial level sodium chloride; nano-filtering to concentrate water, concentrating through a second section high pressure flat film system, freezing and crystallizing to obtain the industrial level mirabilite. The ultra-filtration, the nano-filtration, the reverse osmosis and high-pressure flat film methods are reasonably coupled to combine with the MVR crystallization and freezing crystallization to treat the high saline wastewater, the defect of single technology is overcome, the combination advantage is developed, the problems of efficiently and economically treating and recycling the high saline wastewater can be solved, and the treatment method has obvious economic benefit and social benefit.
Owner:INNER MONGOLIA JIUKE KANGRUI ENVIRONMENTAL TECH
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