摘要:
The invention discloses a cadmium-contaminated soil composite microbial remediation agent and a technical method for remediation while production. The cadmium-contaminated soil composite microbial remediation agent is a composite microbial preparation of a Burkholderia cepacia preparation and a Ralstonia pickettii preparation in a volume ratio of 1:(0.8-1.2). The technical method comprises the following steps: (1) a production period: preparing soil, applying a Si/Fe or C/Fe composite cadmium polluted soil conditioner and a base fertilizer, planting rice, and harvesting; (2) repairing stage: a, applying base fertilizer, preparing soil and ridging, applying a soil cadmium activating agent and a cadmium-contaminated soil compound microorganism repairing agent, planting sorghum, and harvesting; b, weeding, fertilizing, preparing land, applying a soil cadmium activating agent and a cadmium contaminated soil composite microbial remediation agent, planting sedum alfredii hance, and harvesting. The restoration agent is high in cadmium reduction rate, good in restoration efficiency, stable, green and safe; the method disclosed by the invention integrates soil conditioning, plant and microorganism remediation, and is high in economic benefit, short in period, low in cost, simple to operate and suitable for agricultural popularization.
摘要:
A method for improving denitrification performance of livestock and poultry wastewater by interplanting cyperus alternifolius and acorus calamus is realized by interplanting the cyperus alternifoliusand the acorus calamus on a subsurface flow constructed wetland, and periodically discharging effluent of a livestock and poultry wastewater digestion tank to the subsurface flow constructed wetland for purifying treatment, and comprises the following steps: 1) laying a wetland substrate; 2) interplanting high-stain-resistance wetland plants, wherein the high-stain-resistance wetland plants comprise the cyperus alternifolius and the acorus calamus, and the overall planting density of the high-stain-resistance wetland plants is 8-15 plants per square meter; an interplanting mode that the cyperus alternifolius is planted in the middle and the acorus calamus is planted on the periphery of the cyperus alternifolius is adopted, and the planting ratio of the cyperus alternifolius to the acorus calamus plants is 1: 2.5-8; 3) carrying out daily management of the wetland plants, namely regularly trimming cyperus alternifolius and acorus calamus stems and leaves, and reserving top boundaries ofthe two plants; harvesting the cyperus alternifolius and the acorus calamus once before the beginning of winter and before the winter solstice every year respectively. The interplanting mode that thecyperus alternifolius is planted in the middle and the acorus calamus is planted on the periphery of the cyperus alternifolius is adopted, underwater roots, stems and leaves are distributed in a high-level difference mode, and the water purifying efficiency and effect are remarkably improved.
摘要:
The invention discloses a wood-UHPC (Ultra High Performance Concrete) combined box girder. The wood-UHPC combined box girder comprises a UHPC top plate, a laminated wood web, a laminated wood bottom plate, a laminated wood cross beam arranged at the fulcrum position of a girder body, wherein the laminated wood bottom plate, the laminated wood cross beam and the laminated wood web are connected through transverse prestressed reinforcement, and the laminated wood web is connected with the UHPC top plate through a shearing force connecting part. The invention further relates to a preparation method of the combined box girder. According to the wood-UHPC combined box girder and the preparation method thereof, the structural design is reasonable, and the wood-UHPC combined box girder has the advantages of being light in self weight, high in rigidity, capable of being integrally prefabricated, convenient to transport and install, good in hoisting stability and the like; and the problem that the span of a common wood-concrete composite beam is limited due to low rigidity is solved, the requirement for green transformation development of bridge construction in China can be met, and the wood-UHPC combined box girder has a good application prospect in bridge engineering.
摘要:
The invention discloses an indoor reminding device for tourism hotels. A plurality of petal-shaped movable pieces are evenly distributed on the outer wall of a lampshade of an LED lamp body. A displayscreen is mounted on the outer side surface of each movable sheet; the top end of the LED lamp body is provided with a driving structure used for driving the movable pieces to be unfolded. The indoorreminding device further comprises a sensor set installed indoors, the sensor set at least comprises a temperature sensor, an infrared diffuse reflection type sensor, a humidity sensor, a harmful gassensor and a displacement sensor, and the infrared diffuse reflection type sensor is installed in an entrance and exit channel of a room and used for monitoring whether a person enters the room or not; the displacement sensor is installed in a door leaf and used for collecting door leaf displacement parameter data. A music player and a controller are arranged in the base, the input end of the controller is connected with the sensor set, and the output end of the controller is connected with the music player and the display screen. According to the invention, the accommodation safety of the user can be further improved while rapid reminding is realized.
摘要:
The invention discloses an intelligent forestry monitoring system which comprises an unmanned aerial vehicle module, a crawling robot module, a fly robot module and a PC. The unmanned aerial vehicle module is used for realizing acquisition and feedback of forest image data at fixed time and fixed point according to an inspection route; a crawling robot is used for realizing acquisition and feedback of forest video data according to the inspection route; the fly robot module is used for regularly realizing acquisition of current environmental parameters according to preset coordinates; and thePC is used for receiving the data acquired by the unmanned aerial vehicle module, the crawling robot module and the fly robot module, completing the processing of the data, realizing the evaluation ofthe current situation of the forest, and generating an evaluation report. According to the invention, automatic monitoring and evaluation of forest data are realized, and the system can be repeatedlyused, so that the workload of workers is greatly reduced, and the accuracy of monitoring results is high.
摘要:
The invention discloses a wood superheated steam drying and heat treatment integrated device. The wood superheated steam drying and heat treatment integrated device comprises a kiln body, fan assemblies, heater assemblies, steam injection assemblies and partition plates. A plurality of wood drying areas are arranged in the kiln body at intervals. The plurality of heater assemblies are arranged above the wood drying areas; the multiple fan assemblies are located above gaps between the adjacent wood drying areas, and air outlets of the fan assemblies face the heater assemblies. The partition plates are horizontally arranged between the wood drying areas and the heater assemblies. The two sides of the partition plates and the two side walls of the kiln body are arranged in a spaced mode, flowguide plates which are obliquely arranged downwards are arranged on the two sides of the partition plate, exhaust ports are formed in the two sides of the top of the kiln body, and the steam injection assemblies arranged between the exhaust ports and the wood drying areas.