34 results about "Surface water pollution" patented technology

The invention relates to a preparation method of a fracturing supercritical carbon dioxide thickener containing a siloxane polymer. The method comprises the steps: carrying out a reflux reaction on anaminopropyl alkoxy silane hydrolysis product, tetravinyl tetramethylcyelo tetrasiloxane and other cyclosiloxane under the catalysis of an alkali to prepare aminopropyl-terminated vinyl side chain modified polydimethylsiloxane; then, carrying out an acylchloride reaction on the aminopropyl-terminated vinyl side chain modified polydimethylsiloxane and aroyl chloride to prepare an aroylamino-terminated side chain modified siloxane polymer; dropwise adding an organic solvent solution of chloroplatinic acid to make the aroylamino-terminated side chain modified siloxane polymer react with hydrosiloxane to obtain a product. The preparation method is high in monomer synthesis efficiency, the siloxane polymer serving as phenyl and acylamino in the fracturing supercritical carbon dioxide thickenerproduct is capable of improving the thickening effect, and when the dosage of the product is relatively low, the thickening performance is good, and the pollution to underground water and surface water of a stratum is reduced.

The invention discloses a transition metal nano-oxidase, a preparation method, a water treatment device and an application, and relates to the field of nano-catalysts. The active site of the transition metal nano-oxidase is expressed as M-N-C, and M is Fe, Co , one or more of Cu, Mn, Zn, Ni, Ti, Zr, Mo; the oxidase has platinum-like catalyst properties and directly catalyzes the oxidation of organic matter by oxygen. In this application, when the transition metal nano-oxidase is used for surface water pollution treatment, compared with traditional water treatment catalysts, it does not generate hydroxyl radicals in the reaction, and does not need to add additional oxidants such as ozone, hydrogen peroxide and persulfate , In addition to the energy required for aeration and water pumps, no additional energy input is required, which greatly reduces the cost of chemicals and energy, and achieves the purpose of efficiently treating natural organic pollutants in surface water.

The invention discloses a regulation, storage and purification system, wherein the regulation, storage and purification system comprises an interception barrel floating in a water body, a water storage bag, a fluidized bed sewage treatment device and an artificial floating island filter belt, the retention barrel and the water storage bag The water inlet of the fluidized bed sewage treatment plant is connected to the water storage bag to receive sewage and intercept floating objects. The water storage bag is used to store sewage and settle sediment. The fluidized bed sewage treatment device is connected to the water storage bag through pumping equipment to decompose organic matter and remove nitrogen and phosphorus. The water inlet of the artificial floating island filter belt is connected to the water outlet of the fluidized bed sewage treatment device, and the water outlet of the artificial floating island filter belt is used to connect to the receiving water body. Therefore, it can effectively solve the problem of surface water pollution caused by the overflow of combined pipe network or initial rainwater in densely developed areas or old urban areas, and does not occupy the ground space, but uses the volume of surface water to collect, store and purify sewage , Efficiently remove suspended solids, sediment, organic matter, nitrogen and phosphorus and other nutrients to ensure continuous cleanliness of surface water.

The invention relates to a system and a method for purifying water area surface source pollution. The system comprises a primary purification unit, a slow filter tank unit, a deep purification unit and a biological purification unit which are arranged along a first direction from a road surface to a water area in sequence. According to the system, a road landscape design idea is adopted and the road surface runoff biological treatment system suitable for different environments and region conditions is formed, so that pollutants in a runoff can be effectively removed from sources the influences to the peripheral biological environment, caused by road development, are reduced and lowered to the greatest extent, and furthermore, the pollution to receiving water, caused by pollutants generated by washing the road surface through rainwater, is effectively controlled, and the road landscape effect is improved. The system and the method are applicable to prevention of river and lake surface source pollution and are particularly suitable for city and suburb water runoff pollution management.

The invention relates to the field of water body detection, in particular to a rapid detection method for total phosphorus content in water body. Specifically, the detection method is realized by taking the water sample to be tested as the detection object, using the strongly basic anion resin as the enrichment matrix, and using Fourier transform infrared spectrum detection. The advantages of the method and system of the present invention compared with the comparative technology are: (1) simple input and mixing operation, simplifies the operation process, reduces the complexity of the system, and does not require professionals; (2) the cost of the resin enriched matrix material is low , commonly used ion exchange resins for water purification, can be regenerated and reused to avoid secondary pollution; (3) Increase the total phosphorus density in the unit detection unit by ion exchange resin enrichment, thereby reducing the detection limit of total phosphorus , to realize the identification and detection of low concentration of total phosphorus, and the method can be used for quantitative and rapid monitoring and early warning of surface water pollution.

The invention provides a preparation method of artificial capsule type multifunctional particles, and belongs to the field of surface water pollution treatment. According to the preparation method, ore is used as a carrier, microorganisms are loaded on the ore by adding a binder and a flocculant, and meanwhile, mineral particles are coated with a binder layer, a flocculant layer and a high-efficiency degrading bacterium layer to form structures similar to bacterial capsules. The capsule structure not only can protect microorganisms in mineral particles, but also has the capability of immobilizing external efficient degrading bacteria. Minerals, a binding-flocculating material and microorganisms in the multifunctional particles coordinate with one another, comprehensive utilization is realized, the advantages of each components are maintained, optimal adjustment is performed according to different pollution characteristics of water body, the floating water purification capacity is effectively improved, the effects of energy conservation, emission reduction and resource utilization are achieved, and the method can be widely applied to pollution treatment of rivers, lakes and reservoirs and has good market application prospects.

The present application discloses a pretreatment method for preparing ceramsite from heavy metal-contaminated soil before entering the kiln, including: the first step: removing impurities, screening and crushing; the second step: adding calcium oxide to the soil and stirring evenly with water; The third step: send it to the ball mill, and add clay minerals at the same time; the fourth step: measure the concentration of heavy metal leaching, if it does not exceed the concentration limit of class III surface water pollutants, the pretreatment process is over; step five: still higher than class III When the surface water pollutant concentration limit is reached, return to the first step, repeat the first step and the second step in turn, and then send it directly into the ceramsite kiln without granulation and perform a high-temperature roasting according to the ceramsite kiln operation procedure; Step 1: Repeat the third step to complete the preprocessing. This application aims to effectively reduce the risk of heavy metal release from ceramsite products, and to reduce the problem of excessive release of heavy metals from ceramsite in soils with high and low heavy metal pollution under the current situation.