4results about How to "Improve dehydration rate" patented technology

This invention discloses a composite dewatering agent for sludge dewatering in wastewater treatment and its preparation method, belonging to the field of sludge treatment technology. The composite dewatering agent comprises, by weight, the following raw materials: 30-50 parts chitosan-acetylcysteine-modified coal gangue, 20-40 parts cationic starch-modified fly ash fiber, and 1-3 parts nonionic surfactant. The composite dewatering agent of this invention, comprising chitosan-acetylcysteine-modified coal gangue, cationic starch-modified fly ash fiber, and nonionic surfactant, significantly improves the sludge dewatering rate through the synergistic effect of each component, utilizing multiple mechanisms such as charge neutralization, adsorption bridging, and the release of bound water through extracellular polymer destruction. This invention fully utilizes solid waste and natural materials in the preparation of the composite dewatering agent, achieving resource utilization of solid waste while avoiding residual pollution from traditional polyacrylamide flocculants and reducing environmental hazards.

This invention relates to a method for shelling camellia oleifera fruits. The method involves using a low-temperature airflow to treat the fruits, causing the fruit's hilum to crack at a distance of 2-10 mm. Mechanically assisted shelling is then performed, followed by sieving to obtain camellia oleifera seeds. The low-temperature airflow refers to an airflow with a temperature ≤50℃. This invention provides a novel approach to shelling camellia oleifera fruits, and the described process promotes shelling more gently and effectively.

The present application relates to the technical field of petroleum chemical industry, and particularly relates to a biochemical composite demulsifier, which comprises a microbial demulsifier and a chemical demulsifier, wherein the microbial demulsifier is prepared from a fermentation liquor of pseudomonas aeruginosa, and the chemical demulsifier is a mixture of trimethylolpropane polyether and epoxy polyether, and has the advantages of excellent demulsification effect and low cost.

This utility model discloses a solid-liquid separation device for alfalfa fermentation, including a support rod with a pressing assembly at the top. The pressing assembly includes a mounting frame with a material cylinder fixedly connected to its inner wall. A hydraulic rod is fixedly installed inside the top cover, and a pressure plate is fixedly connected to the movable end of the hydraulic rod. A funnel is rotatably connected to the inner walls of two auxiliary supports. One side of the reinforcing rib is fixedly connected to the movable end of the hydraulic rod. This utility model relates to the technical field of solid-liquid separation equipment. After a certain period of time, the servo motor is turned off to stop the funnel from rotating. Then, the hydraulic rod is restarted to drive the pressure plate down, thus pressing the material in the funnel to completely squeeze out any residual liquid and improve the dehydration rate. The liquid falls from the outlet of the conical hood onto the surface of the conical sleeve. Since the surface of the conical sleeve is curved, the liquid also slides into the annular collection box for collection.