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171results about How to "Simple repair" patented technology

Soil remediation and sewage purification integrated ecological treatment device

The invention relates to a soil remediation and sewage purification integrated ecological treatment device. In the device, constructed wetland is surface flow constructed wetland and sequentially comprises a surface soil layer, a deep treatment layer, a draining layer, a filter layer and a water guide layer from top to bottom, wherein the surface soil layer is composite soil formed by mixing soilinfected by heavy metal, a zeolite molecular sieve and bentonite; the deep treatment layer is iron carbon filler; the draining layer is gravel; the filter layer is non-woven fabric; upper and lower layers of gravel fillers are paved on the water guide layer and the middle part of the water guide layer is separated by the non-woven fabric; an alkaline injection device is arranged at the water inlet end of the constructed wetland and used for controlling the pH value of the constructed wetland and preventing the heavy metal in the constructed wetland from being separated out; an aeration disc is arranged at the bottom of an integrated ecological pool; a water distributor is arranged above the aeration disc; flowing fillers are filled in the integrated ecological pool; an artificial ecological floating bed is floated on the surface of the pool; and a water outlet of the constructed wetland is connected with the integrated ecological pool through a pressure pump. The device performs soil remediation and sewage purification and makes the soil remediation process simple and practical.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI

Method for rapidly repairing cement emulsified asphalt mortar interface connection damage of unit slab ballastless track

The invention relates to a method for rapidly repairing cement emulsified asphalt mortar interface connection damage of a unit slab ballastless track; the method mainly comprises the steps of cleaning, sealing, setting of grouting openings, interface connection damage grouting and edging treatment; the specific steps are as follows: firstly, cleaning dust and impurities around a mortar interface connection damage; secondly sealing the interface connection damage area, setting the grouting openings and placing a dial indicator at four corners of a track slab in a to-be-repaired area; thirdly, connecting a dual-component self-mixing grouting machine with a pressure grouting hose, and injecting a dual-component grouting material to the grouting openings in sequence; after the mortar comes out of a grouting opening having the spacing of more than the width of the track slab with the next grouting openings, turning to the next grouting opening to grout continuously till the whole cement emulsified asphalt mortar seam area is fully grouted; and finally, cutting the grouting hose, polishing sealed materials to finish the repairing. The method has the characteristics of simple and rapid process, high repairing efficiency and capability of realizing rapid repairing within skylight time and is applicable to repairing the cement emulsified asphalt mortar seams of the unit slab ballastless track.
Owner:RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2
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