33results about How to "Reduce backwash water consumption" patented technology

An aerating biologic filter pool with dual layers of filter material for treating sewage is characterized by that two filter materials with different granularities are used, middle discharge tubes with water holes are arranged between two filter layers, and air and water are alternatively used for flushing. Its advantages are both decarbonating and nitrifying functions, high effect, simple system and low cost.

The invention relates to a sewage three-level effluent advanced treatment device. The device mainly comprises a coagulating basin, wherein the upper end of the coagulating basin is connected with a chemical dosing device, the water outlet of the coagulating basin is connected with a surface turbulence filtering device, the water outlet of the surface turbulence filtering device is connected with a photocatalytic degradation reaction device, the water outlet of the photocatalytic degradation reaction device is connected with a secondary nanometer aeration advanced oxidation device, and the water outlet of the secondary nanometer aeration advanced oxidation device is connected with an ultrafiltration device. The invention also discloses a sewage three-level effluent advanced treatment method.

The device contains at least two single filter tanks connected each other, water entrance pipe connected with first single filter tank and water exit pipe connected with last single filter tank, devision plates are used to separate the single filter tanks up and down crisscrossed, sewage up and down baffling passageway is preset. Bottom of single filter tank are mud collector, mud sludging pipe and filling layer is the middle part, the fillings are anaerobic filling, aerobic filling and high-grad iron filling, at least two of them are combined to put into the filter tanks, each fillings combination is put to one filter tank to form different function area. The design of sewage up and down baffling passageway is to ensure obtaining length of flow path required by process, the combination of mutiple fillings is suited for requirements of different water quality.

The invention discloses a high-efficiency oil removal and turbidity removal device. The high-efficiency oil removal and turbidity removal device has an integrated tank body structure; a water inlet mixing reactor and a clarifying device are arranged at the upper part of the tank body; a sludge collecting and discharging device is arranged at the middle part of the tank body; a filter and a backwashing system are arranged at the lower part of the tank body. According to the device, a chemical oil removal device and a high-speed filter are integrated; a hot water tank and a conveying pump are not required to be matched; the occupied area is small; the project investment is greatly reduced; the operating cost is reduced. The device integrates the functions of coagu-flocculation reaction, clarification and sedimentation, sludge discharging, filtering, backwashing and the like; the operating, backwashing and sludge discharging processes of the system is controlled by a PLC by matching an full-automatic control system; the operating, sludge discharging and backwashing processes of all pieces of equipment can be completed by operating on a matched control of the equipment; the operation is convenient; the automation degree is high; the water outlet quality is higher than a technical standard requirement.

The invention discloses a device for improving the heat exchange effect of a water-cooled cooler. The cooling water inlet of the water-cooled cooler is connected with a reverse discharge pipe, and a reverse discharge valve is installed on the reverse discharge pipe. The cooling water outlet of the water-cooled cooler There is also a gas filling pipeline connected to the gas filling pipeline, and a gas filling valve is installed on the gas filling pipeline. The device also includes an air source storage tank, a pressure gauge is installed on the air source storage tank, the air source storage tank is connected with a supplementary air source through an air supply pipeline, and a self-adjusting valve is installed on the air supply pipeline. When in use, close the water inlet valve at the cooling water inlet of the water cooler, open the reverse discharge valve, then open the gas filling valve, and feed the gas through the gas filling pipe. The gas and water are mixed in the water cooler and flow in reverse direction to remove the adhesion to the inner wall of the water cooler. , The slimy dirt on the outer wall of the heat exchange tube is discharged out of the system through the reverse discharge pipe to ensure the heat exchange effect of the water cooler. By setting the self-adjusting opening, the pressure of the aerated buffer tank is guaranteed to be higher than the cooling water pressure.

The invention discloses an ozone catalytic oxidation reactor. The ozone catalytic oxidation reactor comprises a sewage distributor, a sand filter layer and a catalyst layer which are arranged in a reactor body sequentially from top to bottom; an ozone aeration disk, and a backwash water inlet distributor are arranged on the lower side of the catalyst layer; a backwash gas distributor is arranged in the sand filter layer; the upper side and the lower side of the sand filter layer communicate with differential pressure gauges; the sewage distributor is connected with a sewage water inlet pipe; awater discharging pipeline is arranged on the lower part of the reactor body; the ozone aeration disk is connected with an ozone generator through an ozone pipeline; the backwash water inlet distributor is connected with a backwash water inlet pump through a backwash pipeline; the upper part of the reactor body is connected with a backwash water discharging pipe; the backwash gas distributor is connected with a backwash gas pipeline; and the top of the reactor body is connected with a tail gas discharging pipe. The reactor integrates filtering and ozone catalytic oxidation functions, and hasan efficient backwash regeneration function. Meanwhile, the invention also provides a sewage treatment method. By the sewage treatment method, the use amount of water for backwash can be reduced and the backwash regeneration efficiency can be improved.

The invention provides V-shaped belt type dewatering equipment self-adaptive to sludge concentration. The V-shaped belt type dewatering equipment is sequentially provided with a first mixing unit, a second mixing unit and a filter pressing dewatering unit in the sludge feeding direction, and the first mixing unit is sequentially provided with a first mixing pipe body and a second mixing pipe body in the sludge feeding direction. The second mixing unit is a pipeline mixing part or a mechanical mixing part, and the filter pressing dewatering unit comprises a rack and a filter cloth operation area arranged in the rack. The invention further provides a dehydration method self-adaptive to sludge concentration. According to the V-shaped belt type dewatering equipment self-adaptive to the sludge concentration and the application thereof, the equipment is low in energy consumption, low in site requirement, convenient to migrate and convenient for subsequent treatment, and is particularly suitable for dewatering treatment of sludge and solid waste generated by a small town sewage plant.

The invention particularly discloses an O-shaped filter chamber, wherein a water inlet is arranged above the filter chamber; a sewage outfall is arranged at the center of the filter chamber and communicated to two ends of the bottom of the filter chamber; one end is communicated with a water outlet; the other end is communicated with a drain outlet; a filter material intercept board is arranged at the top of the filter chamber; a filter material layer is arranged below the filter material intercept board; a filter plate is arranged below the filter material layer; a water distributing filter head and a backlash air pipe are arranged on the filter plate; and an air inlet is arranged at the lower wall of the filter chamber and arranged above the water outlet. By adopting the O-shaped filter chamber, a fiber filter chamber is formed into an O shape of a capital letter; and two ends are formed into arcs, so that the running resistance of the filter material is effectively reduced. The sewage outfall, an outlet channel and a backlash intake channel are merged together, formed into a mode of a guide wall, and put in the middle of the filter chamber, so that not only is the floor area of the filter chamber effectively reduced, but also a 'track' can be provided for movement of the filter material, so as to play a guide role.

The invention discloses an efficient ozone catalytic oxidation system for treatment of refractory wastewater. The system comprises a base and ozone contact oxidation pond equipment, wherein the ozone contact oxidation pond equipment is fixedly welded on the top of the base, one side of the ozone contact oxidation pond equipment is fixedly connected with a water inlet, the other side of the ozone contact oxidation pond equipment is fixedly connected with a water outlet, jet pumps are symmetrically arranged on the two sides of the ozone contact oxidation pond equipment respectively, the jet pumps are connected to the two ends of the base through bolts, the tops of the jet pumps are fixedly connected with a first connecting pipe, one end of the first connecting pipe is fixedly connected with a high-efficiency dissolved gas adding device body, and the high-efficiency dissolved gas adding device body is in bolted connection with the top of the ozone contact oxidation pond equipment. The ozone catalytic oxidation system for treatment of refractory wastewater is simple in equipment structure, novel in design and high in wastewater treatment efficiency.