133 results about "Coral sand" patented technology

A coral sexual propagation system relates to the marine organism artificial breeding technology, and is provided with a coral incubator, an alga incubator, an alga screen and a pipeline system, wherein the coral incubator is provided with a main cylinder body, a bottom cabinet and a main cylinder LED lamp; the alga incubator is provided with a filtering cylinder body and a metal halogen lamp; the pipeline system is provided with a pipe network, a water pump, a temperature control device and a wave making device; the main cylinder body is arranged at the top of the bottom cabinet, the main cylinder LED lamp is arranged above the main cylinder body, a pipeline, a grid plate, a lower silk cover layer, a coarse sand layer, an upper silk cover layer and a coral sand layer are arranged at the inner bottom of the bottom cabinet from the bottom up, holes are formed in the pipeline, water in the main cylinder body and the filtering cylinder body enters the alga screen through the pipeline system to realize internal circulation of seawater, and the water pump, the temperature control device and the wave making device are connected through the pipe network and mounted in the main cylinder body; the water pumping end of the water pump is connected with the pipeline at the inner bottom of the bottom cabinet, and the water outflow end of the water pump is connected with the temperature control device and the wave making device. The coral sexual propagation system is simple in structure, smart in design and convenient to operate.

The invention discloses a device for testing the extrusion process of coral sand around an expansion pile through CT and an application method. The invention aims at solving the problems that the crushing process of coral sand particles is inconvenient to observe, and the stress crushing characteristics of the coral sand cannot be well summarized. The crushing process of the coral sand under the action of the expansive concrete with different expansive agent concentrations is observed; the coral sand pile-forming crushing stress mechanism and the mechanical response in the actual engineering are simulated; the mechanical response and deformation conditions of the coral sand under the action of loads of different grades and different directions can be quantitatively researched; and the crushing characteristics of the coral sand under the stress condition are obtained by researching the corresponding relation of the compression settling volume, shape, particle size and load value of thecoral sand in the experiment process. The observation problem of the crushing process of the coral sand under the stress condition is solved, the mechanical response and deformation conditions of thecoral sand under loads of different grades and different directions are obtained, and wide engineering practice significance and application prospects are achieved for researching and summarizing thestress crushing characteristics of the coral sand.

The invention relates to a method for purifying water for engineering in an island area by using modified coral sand. The method comprises the following steps: (1) pretreatment; (2) purification: coastal seawater pretreated in the step (1) is pumped into a filter tower filled with modified coral sand filler, the pretreated coastal seawater is adsorbed and purified by the filler in the filter tower, impurities are removed sufficiently, and purified water for engineering in the island area is obtained. According to the method, a uniform dispersion system is formed by uniformly mixing three raw materials, is used for coral sand modification and enters pores of the coral sand in an infiltration process, a three-dimensional pore structure adopting small pores (magnetic ordered mesoporous carbon or magnetic ordered mesoporous nickel ferrite) sleeved with large pores (the coral sand) is formed, compared with randomness of the pores of natural coral sand, the pore structure of the modified coral sand is ordered, large and small pores are well-proportioned, the modified coral sand has good adsorption and storage effects when used for seawater purification treatment, and impurity removal is further facilitated during follow-up backwash.