6results about How to "Reduce dissolved oxygen concentration" patented technology

This utility model discloses a portable desalination device for metallic artifacts, belonging to the field of cultural relic protection technology. It includes a mobile frame with casters fixed to the bottom via spring shock absorbers. A desalination assembly is located on the top of the frame, comprising a desalination chamber, a lid, partition grooves, partition plates, threaded grooves, several connecting rods, and clamps. The desalination assembly, with its cross-shaped partition grooves and snap-fit ​​partition plates within the desalination chamber, allows for flexible adjustment of the internal space dimensions, adapting to metallic artifacts of different sizes and volumes, significantly improving the device's adaptability. Furthermore, the connecting rods mounted via the threaded grooves flexibly secure the clamps and a waterproof camera. The monitoring sensor probe within the clamps can acquire multi-dimensional data at different depths of the solution in real time, while the waterproof camera simultaneously records the artifact's condition, eliminating reliance on manual sampling and enriching parameter monitoring methods.

The utility model discloses a concentrated recovery and treatment system for condensate water, which belongs to the technical field of condensate water treatment, aims at solving the problems that the effect is poor and the operation is not convenient and fast when the condensate water is recovered, and comprises an acid pump, one end of one communicating pipe is connected with a water inlet pipeline for feeding condensate water; due to the arrangement of the automatic control system, the automatic control device is used for controlling the PH sensor in the condensate water collecting tank and the dosing titration device, acid-base neutralization treatment is carried out on condensate water under the cooperation of the dosing titration device, and meanwhile, the treatment system adopts a closed recovery system, so that environmental pollution caused by acid-base generation is reduced; on the other hand, the condensate water is not in direct contact with the atmosphere, the concentration of dissolved oxygen in the condensate water is low, equipment corrosion is not prone to being generated, the service life of the equipment is prolonged, the recycling system is highly integrated and automatic, and the labor cost of water treatment specialized workers is reduced.

This invention provides a system and method for deep denitrification treatment of low-carbon-source wastewater. The system includes a main stream denitrification unit and a side stream hydrolysis unit. The main stream denitrification unit includes an anoxic reaction device, an aerobic reaction device, a membrane bioreactor, and a reflux device connected in sequence. The side stream hydrolysis unit includes a first cyclone device, a second cyclone device, and a hydrolysis device. The system reduces the dissolved oxygen carried by the reflux mixed liquor, reduces the competition of dissolved oxygen for denitrification carbon sources, and increases the total nitrogen removal rate.

The invention discloses an isolation belt device for blocking and treating acid mine wastewater and a method thereof, and belongs to the technical field of mine wastewater isolation. The device comprises a buoy, an isolation belt fixing frame is arranged at the bottom of the buoy, a weight settling box is arranged at the bottom of the isolation belt fixing frame, and the weight settling box is filled with filler; biomass filler is arranged in the isolation belt fixing frame, and three-dimensional elastic brush filler is arranged on the front side and the rear side of the isolation belt fixing frame in a binding mode. The device is simple in structure, can be effectively assembled according to field conditions, can touch the bottom, can perform multi-depth treatment, can effectively reduce the concentration of dissolved oxygen converged into AMD, gradually improve the bottom environment, promote the growth of anaerobic microorganisms, perform biofilm formation synergistic treatment by using indigenous microorganisms, avoid the problem of adaptability of exogenous microbial agents, and can be effective for a long time; the cost and the risk of additionally adding nutrient sources and microorganisms are reduced.

This utility model discloses a high-efficiency denitrification wastewater treatment device based on A2O. The internal space of the tank is divided into an equipment room, an influent tank, an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank, and a filtration tank by a partition. The sedimentation tank is equipped with a sludge return device and is connected to the anaerobic tank through the sludge return device. A plug flow zone is located in the middle of the anoxic tank, and an air-lift plug flow device is installed in the plug flow zone, dividing the anoxic tank into a first anoxic section and a second anoxic section. A drainage hole is provided on the partition between the aerobic tank and the sedimentation tank. A return hole is opened on the partition near the anoxic tank at the output end of the aerobic tank, and the output end of the aerobic tank is connected to the first anoxic section through the return hole. The area of ​​the return hole is larger than the area of ​​the drainage hole. This utility model can reduce the impact of wastewater influent load, improve wastewater treatment capacity, and reduce energy consumption.

The utility model belongs to the technical field of sewage treatment, and particularly provides an arc-shaped water inlet weir of a denitrification filter tank, which comprises a weir body and a weir plate, the weir plate is fixed on the weir body, the weir plate is an arc-shaped plate, the upper end of the weir plate is tangent to the water inlet flow direction of an upstream water body, and the lower end of the weir plate extends below the water surface of a downstream water body; and the perforation rate of the weir plate is gradually increased along the water flow direction. The water inlet weir structure can effectively reduce water drop reoxygenation, reduce the adding amount of a carbon source, realize uniform water distribution and improve the denitrification efficiency.