30results about How to "Perfect construction" patented technology

The invention belongs to the technical field of resources and environment. The existing water quality model to calculate the concentration of roof runoff pollutants is quite different from the actual application. Aiming at the problems in the prior art, the present invention discloses a method for calculating the pollutant concentration of roof rainwater runoff. The steps are as follows: firstly, the typical rain pattern formula of regional rainfall is determined, and the rainfall drop in different rainfall return periods of the area is obtained through the rain pattern formula. Then, design the rainfall return period P and the rainfall duration T in this area, collect the number of sunny days Td before the rainfall in this area, and select a certain roof as the object , specify its length L and slope θ; then calculate the confluence time tc from formula 2, and select the corresponding pollutant concentration calculation formula according to the confluence time tc to describe the change process of roof runoff pollutant concentration with time. The calculation formula is scientific and highly correlated with the experimental data.

The invention relates to an intelligent cultural industry local area construction system and method. The system is composed of a management center host module. The system is composed of a management center host module, a router module, a WiFi module, an interactive interface module, a camera module, a human body sensing module, a temperature control booth module, an environmental management module, and a lighting module. The management center host module is connected to the router module, the temperature control booth module, the environmental management module, and the lighting module throughthe line. the router module is connected with the WiFi module and the interactive interface module through circuits, the WiFi module is connected with the camera module in a wireless connection mode,and the interactive interface module is connected with the human body induction module through a circuit. Visual and multi-mode interactive experience is achieved, local area construction and all-around service of the intelligent cultural industry are achieved, and healthy and rapid development of the cultural industry is promoted.

The invention provides a system and method for monitoring the earth potential difference, including a substation and an AC transmission line, the ground flat steel of the substation is connected to the neutral point of the main transformer of the substation, the main transformers of the two substations are connected through the AC transmission line, and the earth potential difference is generated For the current flowing through the AC transmission line, there is a wave recording device connected between the ground flat steel of the substation and the neutral point of the main transformer of the substation. The wave device is also connected with a GPS synchronization device. The invention forms a potential difference test circuit for monitoring substations, realizes a ground potential difference monitoring network covering the entire area, and provides a powerful basis for the analysis of the logical relationship between the ground current activity and the grid operation mode. To improve the construction of regional earthquake disaster monitoring and early warning platform, and provide criteria for abnormal operation status of power, communication and other systems.

The invention discloses a local air-water reversing upflow biological aerated filter and a sewage treatment method thereof, and relates to a water treatment device and a water treatment method. According to the biological aerated filter, a needle punched nonwoven filter material is taken as a packing, and a plurality of aeration branch pipes are arranged in the height direction of an aeration main pipe. The water treatment method comprises the following steps of: regulating the pH value of sewage to be treated to be 7.5-8, pumping into the filter, pumping air into the filter, ensuring that the hydraulic retention time is 1 to 2 hours, and directly discharging the obtained supernate. Small-flow aeration of which the aeration direction is opposite to upward water flow, the water flow is disturbed on the water flow section, air and water are uniformly distributed, a mass transfer effect is good, phenomena of short flow and channeling can be reduced, anaerobic areas in a system can be effectively eliminated, a membrane is formed uniformly, a problem of poor nitrification effect during operation of the traditional biological aerated filter is solved to a great extent, and the average ammonia nitrogen concentration of effluent is 8.63mg / L. The invention is used for treating wastewater.

The invention discloses a method for assembling a barrel body and a grinding roller of a horizontal roller mill. The method comprises the following steps of: (a) assembling an auxiliary platform; (b) hoisting a sliding trolley which is assembled onto a main rail; (c) hoisting the barrel body onto the sliding trolley; (d) hauling the sliding trolley by using traction equipment to move from one side of the main rail to a pedestal of equipment until the sliding trolley arrives above the pedestal of the equipment; (e) fixing the sliding trolley and supporting transverse beams of the sliding trolley respectively by using fixed supports; (f) disassembling steel beams on left side and right side, descending the fixed supports and descending the sliding trolley and the barrel body to the pedestal of the equipment; (g) disassembling the sliding trolley; (h) assembling a maintenance trolley on an auxiliary rail; and (i) hoisting the grinding roller onto the maintenance trolley, hauling the maintenance trolley to move from one side of the auxiliary rail to the pedestal of the equipment until the maintenance trolley and the grinding roller enter the barrel body, and connecting the grinding roller. By adoption of the method, assembly errors can be reduced and stability of the platform is guaranteed.

The invention discloses a treatment method of basement waterproofing concrete construction joints, comprising the following steps of: (1) construction joint arrangement: the construction joint consists of two parts which form ladder shape inside the wall, construction is carried out to the outside construction joint and a substrate together; the inside construction joint is arranged on the substrate and constructed together with the upper wall; (2) water-stopping plate arrangement: a water-stopping steel plate is vertically arranged on the outside horizontal construction joint with the wall higher than the substrate; and (3) concrete pouring: the concrete construction of the outside construction joints and the substrate is finished simultaneously; and the concrete construction of the partabove the inside construction joint and the upper wall is finished simultaneously. By adopting the staged construction joint arrangement, not only the permeating path of the waterproof concrete can beincreased, the impermeable capability of the waterproof concrete is effectively enhanced, and the leakage occurrence of the building is reduced, but also the construction joint left on the wall substrate guarantees the visual quality of concrete surface inside the outside wall, thus solving the problem that the basement concrete wall inside surface has poor visual quality of the construction joint.