58results about How to "Good purification function" patented technology

The invention belongs to the field of analytical chemistry, and relates to a detection method of chlorinated phenols in a textile through hollow fiber liquid-phase microextraction. The detection method comprises the steps of extracting a sample by using acetone, after concentrating an extracting solution to nearly dry, dissolving by using normal hexane to obtain a solvent, then taking a porous hollow fiber tube as a carrier of microextraction solvent, and transferring all extracted solvent into a high performance liquid chromatograph for subsequent assay determination. The detection method provided by the invention has the advantages that a hollow fiber tube liquid-phase microextraction method is adopted, namely, the hollow fiber tube is taken as the carrier of the microextraction solvent, the extraction, gathering, separation and purification are integrated into a whole, the extraction efficiency is high, the organic solvent consumption is less, the extraction is fast and sensitive, and the like; according to experiment results, the recovery rate and precision of the method both satisfy the demands, and the method can be used for the detection of chlorinated phenol mildew preventives in the textile, and has wide application prospect.

The present invention provides an automatic cleaning gradient purifier, and relates to an oil fume purifier, particularly to an apparatus capable of automatically cleaning and purifying oil fume. The apparatus comprises a housing (3) having an air inlet (1) and an air outlet (2) and a purifier (4) inside the housing, and is characterized in that the purifier (4) is installed on the middle position of the housing (3), and the front side and the rear side of the purifier (4) are respectively provided with a spraying device (5). The apparatus has the following advantages that: effects of good purifying and automatic cleaning are provided, and a service life and a use effect of the purifier are substantially improved.

The invention provides a steep-slope buffer strip gradient treatment system achieving rain runoff collection and purification and a construction method, belongs to the field of water body environment restoration, and aims at solving the problems that an existing steep-slope buffer strip is short in retention time of a rain runoff, a large amount of silt and pollutants in the rain runoff enter a water body in a standard exceeding mode, and water and soil loss and water body pollution are caused. According to the steep-slope buffer strip gradient treatment system, an arbor ecological hedge, a first-stage ecological filter, a shrub ecological hedge, a second-stage ecological filter, a herbaceous plant ecological hedge, a third-stage ecological filter and an aquatic plant functional zone are sequentially formed from high to low along the bank slope face of the buffer strip, and different plants are planted on all the ecological hedges and all stages of the ecological filters. According to the steep-slope buffer strip gradient treatment system achieving rain runoff collection and purification and the construction method, the gradient ecological hedges and the aquatic plant functional zone are arranged, and the slope drop of the steep-slope rain runoff is retarded; by means of diversity configuration of plants with deep and shallow roots, a dam is fixed, and the silt is blocked; by means of the multistage ecological filters, the rain runoff retention time is prolonged, the water storage rate and the infiltration rate are increased, and the water purification efficiency is improved.

An object of the present invention is to provide a honeycomb structural body for use in a filter, which can be provided with a large amount of catalyst, can suppress an increase in pressure loss upon collecting particulates, can have a high particulate collecting capability and can efficiently carry out a regenerating process and a toxic gas purifying process. The honeycomb structural body of the present invention is a pillar-shaped honeycomb structural body that is mainly composed of inorganic fibers and has a structure in that a large number of through holes are placed in parallel with one another in the length direction with a partition wall interposed therebetween. Herein, the inorganic fibers, which form the honeycomb structural body, are arranged in such a manner that more fibers are aligned along a face perpendicular to the forming direction of the through holes rather than aligned along a face in parallel with the forming direction of the through holes.