6results about How to "Reduce water pollution" patented technology

The invention provides a soft-shelled turtle feeding device which comprises at least four feeding platforms arranged on the periphery in a pond and a plurality of vertical rods, and the lower ends of the vertical rods are fixed to the bottom of the pond; each group of feeding platforms corresponds to two vertical rods, and two ends of each feeding platform are mutually fixed with the vertical rods; each group of feeding platform is formed by connecting a plurality of groups of brackets; the support is composed of two side floating plates and three transverse floating plates arranged on the two side floating plates at equal intervals. A supporting floating plate is arranged between every two adjacent transverse floating plates, and a fixing assembly used for fixing feed balls is arranged on each supporting plate. An inclined plate is arranged on one side of the supporting floating plate in an inclined and downward mode and used for soft-shelled turtles to climb. The feeding platform on the water is used for bearing soft-shelled turtle feed, and the situation that the soft-shelled turtle feed falls into water, and consequently water quality deterioration is caused is reduced. Meanwhile, the turtles can climb on the supporting floating plate conveniently through the inclined plate, the turtles feed is taken on the supporting floating plate, waste caused by the fact that the turtles feed is dissolved in water is reduced, the breeding cost is reduced, and the water quality deterioration degree is reduced.

The invention relates to the field of solid waste resource utilization research, in particular to treatment-free red mud-based regenerated flow state solidified soil suitable for foundation pit backfill and a construction method thereof, and the treatment-free red mud-based regenerated flow state solidified soil comprises the following components in parts by mass: 100 parts of engineering residue soil, 10-30 parts of red mud compound regenerated micro powder, 50-70 parts of regenerated fine aggregate and 5-10 parts of a water-based activator. The red mud compound regenerated micro powder, the regenerated fine aggregate, the engineering residue soil and the water-based exciting agent are stirred and mixed uniformly in proportion to obtain the treatment-free red mud-based regenerated fluid-state solidified soil suitable for foundation pit backfilling, the red mud does not need to be dried by adopting the fluid-state solidified soil, the construction method is simple, the feasibility is high, and the construction cost is low. The backfilling compactness and strength of the foundation pit can be effectively guaranteed without rolling, post-construction settlement is reduced, a large number of solid waste resources such as red mud and construction waste are utilized, and the good energy-saving and carbon-reducing effects are achieved.

The invention relates to the field of metallurgical industry, and discloses a metallurgical waste slag air-quenching granulation bead-forming waste heat recovery method and system, and the system comprises a waste slag air-quenching granulation module which is used for cooling and granulating high-temperature metallurgical waste slag in a molten state through high-speed airflow; the spray cooling module is arranged above or at the periphery of the waste residue air quenching granulation module; the condensation module is connected with the spray cooling module; the waste heat recovery module is used for extracting waste heat generated in the waste residue granulation process and the cooling medium condensation process from the waste residue air quenching granulation module and the condensation module through a heat exchange device; the circulating water module is used for collecting the cooling medium recovered in the spray cooling module and the condensation module and circularly conveying the cooling medium to the spray cooling module; and a waste gas treatment module. Through the air quenching granulation and waste heat recovery module, high-temperature waste residues are rapidly cooled into solid particles through high-speed airflow, and after heat released by cooling the waste residues is recovered through a heat exchanger, a remarkable energy-saving effect is achieved.

This application discloses a water treatment structure, comprising: a treatment cylinder; end caps, with end caps at both ends of the treatment cylinder; a wastewater inlet, disposed within the treatment cylinder; an ultrafiltration support, disposed within the end caps; a hollow fiber bundle, disposed between two ultrafiltration supports; an adsorber, disposed at the wastewater inlet; and a treated water outlet, disposed at the bottom end cap. By organically combining the physical adsorption of the adsorber with the physical retention of the hollow fiber bundles, it can effectively remove particulate matter, organic pollutants, ammonia nitrogen, insects, algae, bacteria, and viruses from water, while simultaneously removing algal toxins and odorous substances from high-algae water, ensuring that the content of algal toxins and odorous substances in the treated effluent meets the requirements of the "Standards for Drinking Water Quality"; effectively improving water treatment efficiency, reducing water pollution, and enhancing the safety of drinking water for urban residents.

The invention relates to the field of aquaculture, in particular to a special environment-friendly compound feed for improving the body color of pseudosciaena crocea for deep-sea net cages and a preparation method thereof. The invention discloses environment-friendly compound feed. Comprising the following preparation raw materials: 60-70 parts of a marine biological protein source, 10-15 parts of low-fat vegetable oil, 20-22 parts of soybean meal, 2-4 parts of soybean oil, 4-7 parts of fish oil, 1-2 parts of soybean lecithin, 1-2 parts of L-lysine, 8-11 parts of a Chinese herbal medicine extract, 1-2 parts of a natural plant extract pigment, 8-12 parts of a gardenia jasminoides ellis extracting solution, 4-6 parts of carboxymethylcellulose and 2-3 parts of a mineral premix. 3 to 5 parts of vitamin premix, 1 to 2 parts of choline chloride and 0.8 to 1.1 parts of probiotics. The feed not only can improve the color and growth performance of fish bodies, but also can improve immunity, optimize water quality, improve muscle quality and increase survival rate. Due to the characteristics, the feed becomes an ideal choice for large-scale culture of large yellow croakers.

This utility model relates to the field of marine aquaculture technology and discloses a marine aquaculture feed spreader, including an adjusting box. A feed cylinder is fixedly connected to the top of the adjusting box, and the bottom of the feed cylinder extends into the adjusting box. A fixing plate is fixedly connected to the bottom of the feed cylinder. A feed inlet is opened on the top of the fixing plate, and a limiting groove is opened at the bottom of the fixing plate near the feed inlet. A rotating disk is movably connected to the bottom of the inner wall of the adjusting box. Two oblique limiting grooves are opened on the top of the rotating disk in an annular arrangement. A baffle is slidably connected to the top of the inner wall of the limiting groove, and one end of the baffle is inserted into one side of the inner wall of the oblique limiting groove. Through the cooperation of the above structures, this device achieves precise adjustment of the feed output, which can flexibly control the feeding amount according to the aquaculture needs. At the same time, it can adapt to complex aquatic environments, ensure the accuracy and stability of the spreading position, and optimize the spreading effect, so that the feed evenly covers the aquaculture area, improving the efficiency and quality of marine aquaculture and making it more practical.