40results about How to "Easy operation, maintenance and management" patented technology

The invention discloses an efficient and energy-saving mine cooling and water supply system, comprising an air-cooled heat exchange unit, a water-cooled refrigeration unit, a high and low pressure heat exchange unit, a cooling air conditioner and an electric control system. The air-cooled heat exchange unit and the water-cooled refrigeration unit are respectively It is connected with a replenishing water tank, which is used to connect tap water. The air-cooled heat exchange unit and the water-cooled refrigeration unit can communicate with each other through pipelines and valves. Both the air-cooled heat exchange unit and the water-cooled refrigeration unit can exchange heat with the downhole through pipelines and valves. The pipes are connected, and the downhole heat exchange pipe located in the underground roadway is connected with a cooling air conditioner and a high and low pressure heat exchange unit for cooling the main roadway. The lower end is respectively connected with a cooling air conditioner, and the air-cooled heat exchange unit, the water-cooled refrigeration unit, the high and low pressure heat exchange unit and the cooling air conditioner are respectively electrically connected with the electric control system. The invention ensures the safety and stability of the well cooling system and reliable water supply for cooling and production.

The invention discloses a high-ridge reinforced surface-flow constructed wetland system and an operation method thereof. The high-ridge reinforced surface-flow constructed wetland system comprises a water inlet tube, a water distributing weir, a bed body, a water outlet weir and a water outlet tube, wherein a substrate is fed in the bed body; the water inlet tube and the water outlet tube are arranged on the bed body; the water distributing weir and the water outlet weir are arranged at the water inlet tube side and at the water outlet tube side in the bed body respectively; the bottom surface of the bed body is inclined towards the water outlet end from the water inlet tube, the gradient is 3.5%-5%, and a high ridge is formed in the surface of the substrate by ditching. The high-ridge reinforced surface-flow constructed wetland system comprises a submerged type operation method and an un-submerged operation mode. The high-ridge reinforced surface-flow constructed wetland system is small in floor space, convenient to operate, maintain and manage and low in investment and operation cost, the contact area of the substrate is increased, the adsorption and filter efficiency of the substrate is relatively high, the emergent aquatic plants, the submerged plants and the floating plants are planted in a matched manner to increase the varieties of the plants, the sewage purifying effect is improved, and a relatively suitable living environment is provided for the aquatic organisms to make a wetland system biological chain relatively complete.

The invention discloses an ecological restoration method for a lakeside wetland. In the method, hygrophilous woody plants are planted in a lakeside zone to construct wetland plant communities. The hygrophilous woody plants comprise hygrophilous arbor and hygrophilous shrub, wherein the hygrophilous arbor comprises willows, metasequoia, ascendens mucronatum, taxodium ascendens brongn and bamboo; the hygrophilous shrub comprises iteaceae and S.integra thrnb; and the plants are planted in the way of shoot cottage or soil ball transplant. The hygrophilous woody plants are perennial plants, have alow growth rate, low biomass, low growth amount and low plant disposal pressure and do not need felling and refloating every year, so that the defects of frequently harvesting and refloating herbal emergent aquatic plant communities every year are overcome, the maintenance and management cost of lake wetland plant communities are reduced, the lakeside depositing rate is lowered, and the secondarypollution hidden danger to lake water bodies is relieved. Compared with the prior art, the method has the characteristics of convenient operation, maintenance and management, low maintenance cost, high ecological benefit, easy popularization and application and the like and can be used for ecological restoration engineering of lake and lakeside bottomlands, swamp marshes and shallow water zones.