46results about How to "Flexible process operation" patented technology

The invention discloses a UV / O3 / H2O2 advanced oxidation reactor and process. The UV / O3 / H2O2 advanced oxidation reactor comprises a water inlet pipe, a water outlet pipe, an ultraviolet reactor, an H2O2 adding facility and an O3 adding facility, wherein the ultraviolet reactor adopts a down-inlet up-outlet prancing type structure; a plurality of ultraviolet lamp groups are embedded in the ultraviolet reactor; the ultraviolet lamp groups and a partition plate are arranged at a certain angle; the water inlet pipe is connected with a water inlet formed in the lower part of the ultraviolet reactor;the water outlet pipe is connected with a water outlet is formed in the upper part of the ultraviolet reactor; a connection pipeline of the water inlet pipe is provided with the H2O2 adding facilityand the O3 adding facility; after raw water is pressurized, H2O2 with a certain concentration is added through the H2O2 adding facility, and ozone which is prepared by an ozone generator and has a certain concentration is added through a water injector and then enters into the ultraviolet reactor. According to the UV / O3 / H2O2 advanced oxidation reactor and the process disclosed by the invention, separate and united operations of three advanced oxidation ways including UV / O3, O3 / H2O2 and UV / H2O2 can be realized, the oxidation efficiency is improved, and a technological operation is more flexible.

The invention relates to an organic waste water treatment technology, in particular to a micro-aerated biological filter. According to the technical proposal provided by the invention, the micro-aerated biological filter comprises a first filter and a second filter, which is characterized in that: the first filter is thereon provided with a sewage import pipe and is internally provided with a filter chamber which is vertically provided with a plurality of bamboo tubes which are parallel to each other, the bottom end of each bamboo tube is communicated with the bottom of the first filter, and the top end of each bamboo tube is communicated with an overflow tank of the first filter; the second filter is internally provided with a biological bed which can be moved out or moved in, a massive filter material is placed in the biological bed, the second filter below the biological bed is internally provided with an aeration head, and the second filter above the biological bed is internally provided with a drain pipe; the second filter is internally provided with a flow guiding chamber which guides waste water to the bottom of the biological bed, and the flow guiding chamber is communicated with the overflow tank. The invention shortens biological reaction time, reduces equipment investment and simplifies operation process.

The invention discloses a method for preparing a chrome tanning agent from a waste chrome tanning liquid. The method is characterized by comprising the following steps: collecting the waste chrome tanning liquid after tanning is completed, precipitating chrome by using alkali, and performing plate-frame pressure filtration to obtain chrome cakes; performing acidolysis on the chrome cakes by using sulfuric acid, cooling, filtering to obtain filtrate, adjusting the pH value to 2.0-2.5, separating by using a cation-exchange chromatography, measuring the content of the component chrome, adding corresponding parts of sodium formate and sodium acetate according to the contents of negative and neutral components, dissolving, boiling to concentrate until the final solid content is up to 50%, cooling for one hour, separating by using the cation-exchange chromatography, measuring the content of the component chrome, performing aging reaction for 4-7 days according to the contents of the negative and neutral components until the contents of the negative and neutral components are up to 75-84%, diluting for 6 times with water, adjusting the pH value to be 3.8-4.0, placing to stand for 6 hours until the contents of the negative and neutral components are 40-50%, and the content of a high electric charge component with the valence greater than +4 is 17-22%. The method for preparing the chrome tanning agent from the waste chrome tanning liquid is simple and flexible to operate, high in yield, excellent in property of the tanning agent, and applicable to tanning of first-layer high-class leather and second-layer leather of cattle, sheep, pigs and the like.

The invention discloses an automatic efficient purification system for total nitrogen of water and a method of the automatic efficient purification system. The system comprises a purification system (1), a modification system (2), a total nitrogen detection system (3) and a denitrification system (4), wherein the purification system (1), the total nitrogen detection system (3) and the denitrification system (4) are sequentially connected, and the modification system (2) is connected to the purification system (1); the purification system (1) is used for supplying oxygen to microbes on a biochar matrix by using plant root system action and improving nitrification. The modification system (2) is used for carrying out aeration modification on the biochar matrix (1-2) through an aeration pump(2-1), so as to improve the microbial activity of the biochar matrix (1-2). The total nitrogen detection system (3) is used for monitoring total nitrogen in water, and the denitrification system (4) is started up to perform refluxing when the total nitrogen exceeds a set standard value, so as to improve hydraulic conditions and improve a denitrification effect. The system and the method are high in denitrification efficiency, good in treatment effect, small in investment and low in operating cost, biochar is subjected to resource-converting utilization, and in-situ purification does not need afloor area.