Liu Yu

TL;DR: In this article, sludge-tire composite biochar (STB) was successfully prepared through co-pyrolysis at 300, 500 and 700 °C, respectively.

TL;DR: In this article, a rain garden suitable for monsoon climate is described, which includes a rain forest, an annular pool around the rain garden, a water level regulation device for regulating the water level in the annular swimming pool, and a rain purification and reuse device for recycling and reusing water in the pool.

TL;DR: In this article, a multifunctional detachable lifestraw is disclosed, belonging to the technical field of outdoor water purification devices, which integrates primary filtration, deep purification, water storage, back washing and other functions, and mainly includes a funnel straw, primary filters, a secondary filter, ashell, and a back washing device.

Abstract: The invention belongs to the technical field of water quality purifying equipment, and specifically relates to a multifunctional sleeve type water purifying device. The multifunctional sleeve type water purifying device comprises an outer barrel; a first-stage filter barrel, a second-stage filter barrel and a third-stage filter barrel are arranged in the outer barrel in sequence; the first-stage filter barrel, the second-stage filter barrel and the third-stage filter barrel are all used for filtering impurities in water when waterflow passes through; the bunghole of the outer barrel is provided with a funnel; the lower-part water outlet of the funnel is communicated with the first-stage filter barrel; a water pipe connected to a first-stage water outlet faucet is arranged between the first-stage filter barrel and the second-stage filter barrel; a water pipe connected to a second-stage water outlet faucet is arranged between the second-stage filter barrel and the third-stage filter barrel; a water pipe connected to a third-stage water outlet faucet is arranged between the third-stage filter barrel and the outer barrel. The device involved in the invention is simple in construction, convenient to operate and use, strong in practicability, long in service life, wide in use range, easy in quick promotion and use, and the like.

TL;DR: In this article, an artificial fish nest capable of preventing hypostomus punctatus from taking in roes is described, which consists of two hollow cuboid spawning layers identical in structure and size or different in size stacked together from high to low.