6 results about "Sand filter" patented technology

The invention discloses a method for treating coking wastewater, and relates to the technical field of coking wastewater treatment. A coking wastewater treatment system is adopted for treating, the wastewater treated by the coking biochemical system is pumped into a water distributor, the wastewater is injected into the bottom of an inclined-tube sedimentation tank by the water distributor, the wastewater is blocked by an inclined-tube packing zone in the rising process, the wastewater is discharged from the top of the inclined-tube sedimentation tank after part of suspended matters are removed to enter an upper column liquid tank, the wastewater is pumped to a shallow sand filter group by an upper column liquid pump and filtered and then enters a resin adsorption tower, the wastewater is adsorbed by resin and then the effluent flows into a tail water tank from the tower bottom. By adopting the method, the intercepting efficiency of chroma, COD and total cyanides is high, the yield of concentrated pollutants is low, the water quality stability of discharged tail water is good, the water quality and stability of the tail water are effectively improved, and the water quantity is reduced significantly; and the method has the advantages of short flow, low space occupation, appropriate investment, low operation cost and the like.

The invention discloses an organic polymer carrier-based novel denitrification filter tank process and device. The filter layer of a filter medium layer is a multi-layer filter layer combined with organic polymer carrier filter layers and quartz sand filter layers; a plurality of water distribution short pipes are uniformly distributed under a water distribution channel in a filter tank body, oneend of each water distribution short pipe extends below the liquid level in the filter tank body, the other end of each water distribution short pipe is connected with the water distribution channel,and the water distribution channel is communicated with a water inlet channel; therefore, the technical effects that denitrifying organisms can easily form a film, the denitrifying load is relativelyhigh, and the washing strength can be easily controlled during backwashing can be achieved.

The invention discloses a mine acidic iron-containing wastewater treatment method and system. Limestone macadam with a low price is used for pre-adjusting a pH value, then the pH value is adjusted tobe more than 6 through a coal ash filter material, the oxygen content in the wastewater is increased through a multi-stage ecological drop channel, and then a catalytic oxidation reaction is carried out through manganese sand contact to remove iron in the water. An interval is formed between a regulating filter tank and a contact filter tank, and an S-shaped circuitous water flow direction is formed in the regulating filter tank and the contact filter tank, so that wastewater is in full contact with fly ash and manganese sand filter materials, and neutralization reaction and catalytic oxidation reaction effects are further improved. The consumption of electric power and external consumables is extremely low, the daily operation is unattended, only sludge in the sedimentation tank needs tobe periodically cleaned, and the mine acidic iron-containing wastewater treatment method and system are particularly suitable for unattended field environments with inconvenient traffic. Compared withthe existing sewage treatment facilities, the overall investment and the later operation and maintenance cost can be greatly reduced, and good popularization values are achieved on the standard discharge of the coal mine well wastewater and the environmental protection.

The invention discloses rapid cooling equipment for ceramic tiles. The rapid cooling equipment for the ceramic tiles structurally comprises a base, an exhaust fan, a cooling bin and an exhaust pipe, wherein the top face of the base is connected with the bottom face of the exhaust fan in a welded mode; and the top face of the exhaust fan is embedded into the cooling bin. According to the rapid cooling equipment for the ceramic tiles provided by the invention, when an air flow is pumped in, the airflow is first pressurized and concentrated through a concentrator tube, and pumped in at a high pressure and speed, and the airflow enters an upper conveying pipe and then is output to the cooling bin so as to cool ceramic; if the pumped air contains a large amount of suspended fine sand, the suspended fine sand in the airflow can be fully filtered and absorbed by fully contacting and guiding the airflow with filter handles on multiple sand filtering structures in the process that the airflow passes through the upper conveying pipe, so that the occurrence of the phenomenon that the suspended fine sand is directly blown into the ceramic which is not completely solidified to cause the reduction of the quality of the ceramic is avoided; and meanwhile, the sand filtering structures are made to rotate and vibrate through airflow flowing, sand adhering to the sand filtering structures can be automatically shaken off, so that the convenience in cleaning is achieved.