38results about How to "Easy to invest" patented technology

The invention discloses a soil repair agent and a preparation method thereof. The soil repair agent comprises the following components in parts by weight: 10-80 parts of calcium cyanamide, 10-70 parts of a medium trace element fertilizer and 1-20 parts of beneficial bacteria, wherein the beneficial bacteria are sealed into capsules; corresponding parts of components are evenly mixed to obtain the soil repair agent. By adopting the soil repair agent disclosed by the invention, the soil pH value is adjusted, malignant bacteria and nematodes in the soil are killed, the soil-borne disease is reduced, the soil environment is repaired, the functions of the soil environment are restored, and especially, a series of vicious circles caused by soil environment degradation can be effectively contained. The soil repair agent is convenient to use, all components can be received by the soil, the soil repair agent is an ideal multifunctional soil environment repair agent with the functions of fertilization and fertility increase, slow release and nitrogen fixation, soil and water conservation, acid-base adjustment, bacterial inhibition and disease control and low price. The soil repair agent is less in equipment investment, simple in preparation process and low in manufacturing cost.

The invention discloses a power grid optimal planning method of a large-scale grid-connected wind farm, comprising the following steps of: step 1, obtaining net rack planning data, system operation predication data and wind power planning data; step 2, constructing a calculation model comprising a target function and a constraint condition of the model; step 3, setting calculation parameters; and step 4, inputting the net rack planning data, the system operation predication data and the wind power planning data, which are obtained by the step 1, and three parameters set by the step 3 into the calculation model constructed in the step 2; utilizing optimization algorithms including a Benders decomposition method, a branch and bound method and the like to solve through a computer. According to the method provided by the invention, a 'peak property' of wind power output is considered and the economic rationality of a power grid optimal planning scheme is ensured through allowing a wind power output peak value with a smaller probability; and the method provided by the invention comprehensively considers two aspects on newly-constructed line investment and wind power comprehensive benefits, and simultaneously ensures the line utilization rate and the wind power comprehensive benefits.

Disclosed are a wave power generation system, an offshore platform and a hydrogen energy source base. The wave power generation system comprises an electrical energy utilisation apparatus, a power generation apparatus, and a conversion apparatus for converting changing waves into stable seawater fluctuations. The power generation apparatus and the conversion apparatus are mutually connected and receive the seawater fluctuations to generate power, and the energy utilisation apparatus and the power generation apparatus are mutually connected to enable electrical energy produced by the power generation apparatus to be used by a user.The wave power generation system converts waves of different sizes into stable seawater fluctuations, enabling the power generation apparatus to be able to stably and effectively generate power, such that waves of different sizes are fully utilised, reducing power generation costs.

The invention provides a high efficiency sewage treatment method which comprises pre-processing, biological chemical treatment, deposition processing, deposition trash concentration disposal, and thick sludge dehydration treatment. By employing the biological method with anoxybiotic, anaerobic as the main steps and aerobic as the auxiliary step, the NH3-N, T-N and T-P in the sewage can be removed effectively, and the binding precipitant has very strong physical adsorption property.

The invention discloses a digital printing machine suitable for different kinds of ink. The digital printing machine comprises an ink supply system, a spray nozzle, a spray nozzle electromagnetic valve, a vacuum residual liquid suction assembly, a cleaning gas output assembly, a cleaning liquid output assembly, ink output assemblies, a controller and a control panel. The ink supply system comprises a spray nozzle cleaning assembly. The spray nozzle is installed on a guide rail and can moves to the part above the spray nozzle cleaning assembly along the guide rail under the drive of an executing mechanism to be cleaned. An outlet of the spray nozzle electromagnetic valve communicates with an inlet of the spray nozzle through a pipeline. An inlet of the vacuum residual liquid suction assembly communicates with an inlet of the spray nozzle electromagnetic valve through a pipeline. An outlet of the cleaning gas output assembly communicates with an inlet of the spray nozzle electromagnetic valve through a pipeline. An outlet of the cleaning liquid outlet assembly communicates with the inlet of the spray nozzle electromagnetic valve through a pipeline. The multiple ink output assemblies are composed of ink of different media, and outlets of the ink output assemblies communicate with the inlet of the spray nozzle electromagnetic valve through pipelines. The controller is connected with all electric control devices. The control panel is connected with the controller and inputs control information. According to the digital printing machine suitable for different kinds of ink, a digital printing plant can conveniently and rapidly meet the printing technology requirements of different fabrics to different kinds of ink through a single digital printing machine with least investment.