5results about How to "Efficient backwash" patented technology

This invention relates to the field of multi-stage water treatment technology, specifically to a multi-stage domestic sewage treatment device, including a treatment tank, which contains a reaction tank, a dissolved air zone, a flotation tank, and a clear water tank. A sludge removal mechanism is located above the flotation tank, comprising a transmission belt and multiple telescopic push plates. An inclined plate is fixed above three partitions, and a backwashing mechanism is installed inside the inclined plate. Firstly, this invention utilizes the unidirectional transmission characteristics of a ratchet assembly to lock the filter belt when the telescopic rod presses down, breaking the limitations of continuous operation and providing time for the scum to settle and drain, significantly improving dewatering efficiency. Secondly, it abandons the complex linkage floating mechanism, utilizing a water storage plate that moves obliquely along the inclined plate to instantly generate a vertically upward high-pressure surge that impacts the bottom of the flat filter screen. This water flow is only used to clear the mesh rather than push the scum, completely avoiding the defects of bottom air leakage and pressure relief in traditional solutions, achieving efficient backwashing with a minimalist structure.

The invention relates to the technical field of wastewater treatment, in particular to a calcium ammonium nitrate wastewater treatment device and method.The device comprises a PH adjusting tank, a buffer tank, a heat exchanger, a multi-medium filter, a precision filter, a ceramic filter, an ultrafiltration device, a concentration reverse osmosis device, a desalination reverse osmosis device, a concentrated water reverse osmosis device and wastewater discharge system equipment; the multi-medium filter comprises a filter tank body, a fiber ball filter material layer is arranged in the filter tank body, and a liftable compression frame and bearing frame structure is arranged; the compression frame moves along the vertical guide pipe through a magnetic force driving mechanism, compresses the fiber balls to form a gradient pore structure during filtration, and moves upwards to release the fiber balls and trigger the dispersion frame to unfold during backwashing so as to assist in loose cleaning of the fiber balls; the compression frame is sleeved on a vertical guide pipe in the filter tank body in a lifting manner, and the bearing frame is movably hoisted at the bottom of the guide pipe; the device disclosed by the invention can efficiently realize graded purification and resource recovery.

This utility model discloses a V-type sand filter air-water backwash distributor, belonging to the field of V-type sand filters. The side wall of the V-type sand filter body is equipped with multiple water and air pipes. Each water and air pipe forms a set of air-water backwash components and corresponds to a set of filter plates. Each water or air pipe has a flow monitoring pipe connected to its outer end, and a control valve is installed at the outer end of the flow monitoring pipe to control the opening and closing of the air and water supply. The equipment employs flange connections and sealing ring designs in multiple places to ensure reliable connections and good sealing. The inlet water pipe and liquid inlet valve allow for alternating use during equipment maintenance, improving flexibility. During maintenance, disassembling the inlet and outlet pipes, flow monitoring pipes, and control valves allows for inspection and cleaning of the water and air pipes, and facilitates easy cleaning or replacement of the filter plates, ensuring continuous and stable operation of the equipment. The equidistant distribution of the air-water backwash components and filter plates ensures a uniform and efficient filtration system.

The utility model discloses a kind of industrial wastewater treatment devices of multistage sedimentation filtration, it is related to industrial wastewater treatment field, solve the problem of low efficiency of traditional wastewater treatment, heavy metal is not removed completely.The device contains the pretreatment unit, multistage sedimentation unit, composite filtration unit and intelligent control unit in turn communication.Pretreatment unit is built-in pH adjusting cavity, heavy metal capturing agent dosing device and heavy metal ion capture module, can effectively adjust wastewater pH value and capture heavy metal ion;Multistage sedimentation unit removes suspended solids in wastewater by cyclone sedimentation cavity and inclined plate sedimentation component;Composite filtration unit uses nano catalytic filter material layer and activated carbon adsorption layer to realize depth purification;Intelligent control unit realizes automation monitoring and adjustment by sensor network and PLC controller.This device is compact in structure, high degree of automation, processing effect is remarkable, can efficiently remove pollutants in wastewater, with good application prospect.

The application relates to the technical field of wastewater treatment, in particular to a high-salt organic wastewater treatment and salt recovery process capable of recycling, which comprises the following steps: adding polyaluminum chloride and attapulgite powder into high-salt organic wastewater with a volume of V, and stirring for 3-5 minutes; the treated high-salt organic wastewater is filtered once in a ceramic membrane filter, the filtrate is collected in a filtrate collecting device, and the volume of the filtrate is 0.8V; the application can coagulate and filter organic matters and suspended impurities in the high-salt organic wastewater during the treatment process, almost all the salt is retained in the filtrate, and the salt ions are directionally migrated and concentrated under the driving of an electric field in cooperation with an electrodialysis concentration treatment, so that the removal rate of the organic matters and the recovery rate of the salt are greatly improved.