8results about How to "Efficient and stable removal" patented technology

This invention belongs to the field of oil and gas field wastewater treatment technology, and discloses a treatment system and method for oil and gas field fracturing flowback fluid. The system comprises a de-gelling and flocculation system, a microbubble ozone system, a reverse osmosis interception system, and a bio-enhanced degradation system connected in sequence. The de-gelling and flocculation system receives the raw water to be treated and, through the synergistic effect of chemical de-gelling and physical swirling fields, separates and removes oily substances and suspended solids from the raw water, forming de-gelling permeate. The microbubble ozone system is used to deeply oxidize the de-gelling permeate, forming oxidation permeate. The reverse osmosis interception system is used to desalinate and deeply purify the oxidation permeate, forming reverse osmosis permeate. The bio-enhanced degradation system is used to degrade biodegradable pollutants in the reverse osmosis permeate to obtain system effluent. This invention achieves the comprehensive goal of a compact process and stable effluent that meets standards for reuse or discharge through a closed-loop treatment path of progressive pollutant reduction and differentiated purification.

The invention discloses immobilized particles capable of efficiently and rapidly degrading crystal violet and a preparation method of the immobilized particles, and belongs to the technical field of biology, and the immobilized particles are mainly prepared from bacterial strains, sodium alginate, chitosan and biochar; the bacterial strain is Arthrobacter sp., and the preservation number of the bacterial strain is CICC (China General Microbiological Culture Collection Center) No. 23408. The method for obtaining the crystal violet degrading bacteria is simple, stable and good in operability, and the prepared immobilized particles can solve the problems that a traditional carrier material is poor in microbial activity, low in treatment efficiency, small in recycling frequency and the like. The obtained immobilized particles can rapidly decolorize and degrade crystal violet dye, the treatment cost is low, the efficiency is high, and compared with a chemical method, the immobilized particles are safer and free of secondary pollution.

The utility model relates to a wastewater advanced treatment device applied to an industrial park. The wastewater advanced treatment device comprises a water collecting tank, a regulating tank, a primary sedimentation tank, a two-stage A / O (Anoxic / Oxic) tank connector, a secondary sedimentation tank connector, a sludge return well, a coagulative precipitation tank, an intermediate water tank, a catalytic ozonation device, a BAF (Biological Aerated Filter), a backwashing wastewater tank and a clean water tank which are connected with one another. According to the device, the reliability of sewage treatment can be respectively controlled and ensured, meanwhile, the stability of sewage treatment can be improved, and the influence on the environment is reduced; the sewage treatment process can be flexibly combined, and meanwhile, the sewage treatment process can be optimized and adjusted according to different sewage treatment requirements. The device solves the problem of difficult-to-degrade COD (Chemical Oxygen Demand) in the wastewater in the industrial park, improves the B / C value, improves the biodegradability of the whole wastewater, can further remove organic matters and phosphorus in the wastewater, improves the wastewater treatment efficiency, and ensures that the high-difficulty wastewater in the chemical park is stably treated and reaches the national standard of class 4 water after upgrading.

The application relates to a carrier jig, which comprises a base for placing a carrier, an ejecting mechanism arranged on the base and used for pushing the carrier on the base, and a return mechanism arranged on the base and connected with the ejecting mechanism and used for automatically returning to the original position after the ejecting mechanism is in place after pushing the carrier. The carrier jig provided by the application can move the carrier in the rack out, facilitate visual inspection of an operator, and prevent the product from being damaged, overturned and the like during the taking-out process.

The invention relates to the field of waste gas purification, and discloses a composite metal oxide catalyst, a preparation method and application thereof, and a method for synergistically purifying carbon monoxide and volatile organic compounds. The invention relates to a composite metal oxide catalyst, the catalyst comprises manganese oxide and M metal oxide, the M metal is selected from at least one of Fe, Co, Ni, Cu, Zn, Ag, Zr and Mo; wherein in the catalyst, the defect oxygen accounts for not less than 15% of the oxygen species in the catalyst. The composite metal oxide catalyst provided by the invention is applied to synergistic purification of carbon monoxide and volatile organic compounds, and has the advantage of good removal effect of carbon monoxide and volatile organic compounds.

This utility model discloses a secondary coagulation and sedimentation system for municipal solid waste leachate, comprising: a first reaction tank with a built-in first stirring device; a second reaction tank with its inlet connected to the outlet of the first reaction tank and a built-in second stirring device, the second stirring device having the same or different stirring speed as the first stirring device; a sedimentation tank with its inlet connected to the outlet of the second reaction tank and its outlet connected to a subsequent treatment device; a dosing assembly with its outlet connected to both the first and second reaction tanks to allow the addition of different reagents; and a detection assembly including a first detection element and a second detection element, both electrically connected to the dosing assembly. The first detection element is located in the first reaction tank and is used to detect the water quality in the first reaction tank, and the second detection element is located in the second reaction tank and is used to detect the water quality in the second reaction tank. This utility model can improve the pretreatment effect of municipal solid waste leachate.

A device and method for treating organophosphorus pesticide wastewater based on "EGSB+biological contact oxidation+Fenton method" relates to a wastewater treatment method. It is to solve the technical problems of high difficulty, high investment and high operating cost in the existing organophosphorus pesticide wastewater treatment. The device includes an inlet water tank, an inlet water pump, an anaerobic reactor, a heating pump, a constant temperature water bath, a reflux pump, a biological contact oxidation tank, and a Fenton oxidizer; the inlet water tank is connected to the anaerobic reactor through the inlet water pump; the anaerobic reactor is provided with a heating jacket and a reflux pipe; the outlet of the anaerobic reactor is connected to the biological contact oxidation tank and the Fenton oxidizer in sequence. Method: 1. Start the device with simulated organophosphorus pesticide wastewater, and 2. Stable operation. After the organophosphorus pesticide wastewater is treated, the removal rates of COD, total phosphorus, organic phosphorus and phosphate exceed 99.7%, 97.6%, 99.5% and 94.1% respectively. It can be used in the field of wastewater treatment.

The utility model discloses an integrated AO processing device based on magnetic loading technology, including integrated AO box, the integrated AO box is provided with anaerobic chamber, aerobic chamber and sedimentation chamber in, anaerobic chamber, aerobic chamber and sedimentation chamber are communicated in proper order through the flow guide channel, the upper portion of anaerobic chamber is equipped with sewage water inlet, the bottom of aerobic chamber is equipped with aeration device, the aeration device is linked with outside fan, the upper portion of sedimentation tank has the water outlet, the integrated AO processing device based on magnetic loading technology can run continuously of the utility model, is not easy to jam, and the impact resistance is strong, and simple structure, convenient operation, small floor area has efficient stable processing effect.