Abstract: An innovative equipment system comprises a tap water reservoir system, a disinfectant reactor system, a pump system, a disinfection and safety door spraying system, a sewage recycling system and a sewage treatment system, wherein the tap water reservoir system is mainly configured to store tap water in advance according to actual cargo volumes and disinfection requirements, and generally in tons; and the disinfectant reactor system comprises boron-doped diamond electrode modules, a reactor indicating lamp module, a visible reactor, a smart control screen, at least one water tank and a structure protection module. The Innovative disinfection and sterilization equipment system can easily kill bacteria and viruses such as Escherichia coli, Staphylococcus aureus, Salmonella typhimurium, and new coronavirus in a short time and enhance disinfection efficiency.

Abstract: A method for preparing biochar and hydrogen by utilizing anaerobic fermentation byproducts, the method including: (1) mixing a first straw, seeding sludge and distilled water, and then carrying out anaerobic fermentation to obtain a mixed product after fermentation; (2) performing separation on the mixed product to obtain a second straw and biogas slurry; and (3) carbonizing the second straw to obtain biochar, and collecting gas after a pressurized catalytic reaction on the biogas slurry to obtain hydrogen.

Abstract: Provided is a zoom lens. The zoom lens includes a fixed lens group having a positive optical power, a first zoom lens group having a negative optical power, a second zoom lens group having a positive optical power, and a compensation lens group having a positive optical power which are sequentially arranged along an optical axis from an object side to an image side, where the first zoom lens group and the second zoom lens group are capable of reciprocating along the optical axis. The fixed lens group includes a first lens, and the first zoom lens group includes a second lens, a third lens, and a fourth lens which are sequentially arranged along the optical axis from the object side to the image side.

Abstract: Provided is an optical lens. The optical lens is provided with a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, which are sequentially arranged from an object side to an image side along an optical axis. The first lens is a spherical lens having a negative focal power, the second lens is an aspheric lens having a meniscus shape bent towards an image surface, the third lens is an aspheric lens having a meniscus shape bent towards an object surface, the fourth lens is an aspheric lens having a positive focal power, the fifth lens is an aspheric lens having a positive focal power, the sixth lens is an aspheric lens having a negative focal power, and the seventh lens is an aspheric lens having a positive focal power.

Abstract: Disclosed is a method for preparing a carbonized silk photocatalyst, comprising; soaking a natural silk and an activator in water, taking out the soaked silk, and drying the same; and roasting the dried silk under the protection of an inert atmosphere to prepare a carbonized silk photocatalyst. Also disclosed is a method for photocatalytic desulfurization of a fuel oil, comprising: mixing a fuel oil to be desulfurated, an extraction agent and a carbonized silk photocatalyst, with air being used as an oxidizing agent, to conduct a photocatalytic reaction under light irradiation, and separating an upper oil phase to obtain a desulfurated fuel oil. The catalyst has a simple preparation process, and can effectively reduce dibenzothiophene sulfides, which are difficult to remove, in the fuel oil under UV light radiation. Desulfurization can be achieved at room temperature, and reaction conditions are mild.

Abstract: Provided is an optical lens. The optical lens is provided with a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, which are sequentially arranged from an object side to an image side along an optical axis. The first lens is a spherical lens having a negative focal power, the second lens is an aspheric lens having a meniscus shape bent towards an image surface, the third lens is an aspheric lens having a meniscus shape bent towards an object surface, the fourth lens is an aspheric lens having a positive focal power, the fifth lens is an aspheric lens having a positive focal power, the sixth lens is an aspheric lens having a negative focal power, and the seventh lens is an aspheric lens having a positive focal power.

Abstract: The present invention provides a method for preparing an active calcium silicate. The method comprises: mixing a lime milk, a fly ash desilicated liquid and a particle diameter control agent and reacting them, to obtain a active calcium silicate slurry. The particle diameter control agent is one of a pyrophosphoric acid salt, a metaphosphoric acid salt, a polyphosphoric acid salt, a polyacrylic acid ester, and a polyacrylic acid salt. The preparation method of the present invention can efficiently reduce large particles of the active calcium silicate, so as to reduce the influence of the large particles on papermaking process and paper quality.

Abstract: The present invention provides a method for preparing an active calcium silicate. The method comprises: mixing a lime milk, a fly ash desilicated liquid and a particle diameter control agent and reacting them, to obtain a active calcium silicate slurry. The particle diameter control agent is one of a pyrophosphoric acid salt, a metaphosphoric acid salt, a polyphosphoric acid salt, a polyacrylic acid ester, and a polyacrylic acid salt. The preparation method of the present invention can efficiently reduce large particles of the active calcium silicate, so as to reduce the influence of the large particles on papermaking process and paper quality.

Abstract: A method for co-producing alumina and activated calcium silicate from high-alumina fly ash, comprising the steps that: high-alumina fly ash reacts with sodium hydroxide solution to obtain desiliconized solution and desiliconized fly ash; milk of lime is added to the desiliconized solution to obtain activated calcium silicate; limestone and sodium carbonate solution are added to the desiliconized fly ash to blend raw slurry, the raw slurry is baked into clinker, and sodium aluminate crude solution is obtained from dissolution of the clinker; the sodium aluminate crude solution is subjected to the processes of first-stage deep desiliconization, second-stage deep desiliconization, carbonization decomposition, seed precipitation and etc to obtain alumina.

Abstract: A method for co-producing alumina and activated calcium silicate from high-alumina fly ash, comprising the steps that: high-alumina fly ash reacts with sodium hydroxide solution to obtain desiliconized solution and desiliconized fly ash; lime cream is added to the desiliconized solution to obtain activated calcium silicate; limestone and sodium carbonate solution are added to the desiliconized fly ash to blend raw slurry, the raw slurry is baked into clinker, and sodium aluminate crude solution is obtained from dissolution of the clinker; the sodium aluminate crude solution is subjected to the processes of first-stage deep desiliconization, second-stage deep desiliconization, carbonization decomposition, seed precipitation and etc to obtain alumina.

Abstract: The invention discloses a pulsating chlorination machine for purification of city water. The machine includes a body, two ends of which are respectively a water inlet and outlet end between which a converging pipe, a throat pipe and a diverging pipe are connected in turn; and a liquefied chlorine input port located below a middle part of the throat pipe and connecting with the throat pipe via a cone-shaped valve seat. A normally closed cone-shaped valve rod is mounted over the cone-shaped valve seat and inserted into the throat pipe through a vertical circular hole on a top of the body, and moves up and down under the control of a pulsating electromagnetic executive mechanism to open/close the liquefied chlorine input port. Through the liquefied chlorine input port the liquefied chlorine flows into the throat pipe and out from the diverging pipe and then into a clear-water reservoir.

Abstract: A direct chlorination system and device characterized by feeding of liquefied chlorine into water without vaporization in a process that liquefied chlorine from a source liquefied chlorine cylinder is led to a liquefied chlorine settlement cylinder for removal of solid impurities, a metering pump for a pressurization and flow rate control at the metering pump and a liquefied chlorine feeder for mixing with and dissolving in pressurized water to become a high concentration chlorine solution which is then led to a water injector for feeding into a rapid water filter, a mixing basin and a clearing water reservoir for reaction and disinfection before city water is sent to a city water distribution network, and possessing the following merits: upgrading potable water quality, minimizing initial investment, lowering operating cost, and providing a simply but reliable, easy-to-control device that can facilitate water works automation.