30results about How to "Put into use as soon as possible" patented technology

The invention provides a method combining an oxidizing composite reagent and activated carbon to remove arsenic in water. The oxidizing composite reagent is added into the water and stirred, and then the activated carbon is utilized to adsorb the arsenic. The oxidizing composite reagent is formed by compositing potassium ferrate, chlorine dioxide, sodium peroxide, potassium persulfate, potassium monopersulfate, ferrous sulfate, ferric sulfate and hydroxylamine hydrochloride, or is formed by compositing potassium peroxide, sodium peroxide, sodium monopersulfate, iron chloride and hydroxylaminehydrochloride, or is formed by compositing calcium peroxide, sodium hypochlorite, calcium monopersulfate, calcium persulfate, cerium chloride, ferric chloride, cerous sulfate and humus, or is formed by compositing cobalt chloride, ammonium monopersulfate, ammonium persulfate, cerous sulfate, sodium peroxide and hydroxylamine hydrochloride. The method can not only remove the arsenic in drinking water, underground water and surface water rapidly, efficiently, conveniently and safely, but also effectively reduce concentration of the arsenic in sewage containing arsenic and effluent of sewage secondary sedimentation tanks, and simultaneously can have good recovery effect on lakes and inland seawater polluted by the arsenic.

The invention provides a light promoting dehalogenation compound medicament / light combined method for removing halogenated organic matters in water, which relates to a method for removing halogenated organic matters in water. The invention overcomes various defects existing in the process of removing halogenated organic matters in water by using the current gas stripping method, activated carbon adsorption method, electrochemical removing method, advanced oxidation method, transition metal catalytic reduction method, vacuum ultraviolet technique or permeable reactive barrier technique. The method of the invention comprises the following steps: adding the light promoting dehalogenation compound medicament into the water containing halogenated organic matters for stirring, and then, carrying out optical radiation. The method of the invention does not need multi-stage removal, does not need expensive oxidants and catalysts, does not generate secondary pollution, does not need expensive vacuum ultraviolet light sources and high-energy radiation sources, can utilize common and cheap ultraviolet pop light sources or even expanding to visible light sources, improves the utilization efficiency of the light energy, can quickly remove the halogenated organic matters, can conveniently design a reactor, meets the requirements of various water bodies, is convenient in management, and can ensure the safety of the water quality.

The invention relates to cement-based self-leveling mortar, which is prepared from the following raw materials in percentage by weight: 35 to 40 percent of No.425 ordinary portland cement, 10 to 15 percent of No.42.5 rapid hardening sulphoaluminate cement, 15 to 18 percent of heavy calcium carbonate, 0.45 to 1 percent of high polymer, 0.15 to 0.3 percent of water reducing agent, 0.15 to 0.3 percent of early strength agent, 0.15 to 0.3 percent of retarder, 0.15 to 0.3 percent of thickener and the balance of fine river sand with the fineness modulus of 1.2 to 1.5. Compared with other traditional cement self-leveling mortar, the self-leveling mortar has the characteristics of higher fluidity, higher leveling property, high early strength and the like.

The invention discloses an underground station open excavation construction method comprising the following steps that 1, slope excavation is conducted on the ground of a planned-built underground station; 2, prefabricated left and right frame segments are hoisted into an excavation pit and are fixedly assembled in the length direction of the underground station, bilaterally symmetrically arrangedstation lower layer pilot tunnels are formed, then track laying, power supply and communication are completed, thus the station have passing conditions in advance, the left and right frame segments comprise bottom plates, lower side walls, end floors, lower frame columns and end platform plates; 3, center floors, center platform plates and an upper station layer are constructed; and 4, the upperportion of the station is backfilled. Meanwhile the invention further discloses another underground station open excavation construction method. Through the construction method, construction of the underground station is achieved, traffic passing of a tunnel is completed in advance, thus early use of a track line is ensured, the travel needs of people are met, and construction time of the whole underground station is also shortened.