75results about How to "Effluent water quality up to standard" patented technology

A treatment process for landfill leachate, specifically comprising the following steps: (1) first adding a coagulant to the landfill leachate, coagulating and filtering to remove tiny fibers in the leachate; (2) filtering the leachate Enter the adjustment tank; (3) The leachate from the adjustment tank enters the evaporation system, and after evaporation, water and ammonia boil out of the leachate into steam, which becomes distilled water after condensation and is discharged, and then enters the ion resin exchange system, and the distilled water passes through the resin When the ion exchange reaction occurs, the ammonium is removed, and the ammonia nitrogen index of the distilled water is discharged after reaching the standard; the non-condensable gas and a small amount of non-condensable steam in the steam are discharged from the evaporation system and enter the absorption tower; (4) The leachate from the regulating tank enters the Evaporation system, the remaining part of the leachate after evaporation is pollutants that cannot be turned into gas and escape the evaporation system. After being concentrated into a concentrated liquid, it is discharged from the evaporation system and can be recharged to the landfill. The process is thorough and the operating cost is low.

The invention discloses a spinning printing and dyeing waste water reclamation method, a device and the application thereof. The method comprises the steps of: filtering spinning printing and dyeing waste water; sequentially carrying out homogenizing, equalizing quantity and primary sedimentation on filtrate; adding sodium chloride into waste water supernate, and evenly mixing for indirect electro-catalysis oxidation; sequentially evenly mixing the waste water treated by indirect electro-catalysis oxidation with basic aluminium chloride and polyacrylamide; removing the precipitated supernate, and sequentially treating by activated carbon adsorption and reverse osmosis; removing trace organic chloride generated in the electrolytic process and the rest COD and color; and obtaining recyclable water resource. The device for realizing the method comprises a grate, a regulating reservoir, a sealed electrolytic cell, a flocculation tank, an inclined tube sedimentation tank, a sand filter tank, an active carbon filter, an intermediate water tank, a reverse osmosis unit, a clear water reservoir, a brine tank, a chlorine absorbing tank, a sludge concentration tank and a plate-and-frame filter press. The invention can effectively treat spinning printing and dyeing waste water, and has the advantages of high treatment efficiency, stable effluent quality, simple technological process and the like.

The invention provide an anaerobic ammonia oxidation-based low-carbon nitrogen ratio urban sewage denitrification system and treatment process. The system comprises a biological adsorption unit, an anaerobic ammonia oxidation unit, a nitrosation unit, a membrane technology unit and an anaerobic digestion unit, wherein the biological adsorption unit comprises an aeration tank and a settling pond; the aeration tank is connected with the settling pond; the settling pond is connected with an anaerobic ammonia oxidation tank; the anaerobic ammonia oxidation tank is connected with a nitrosation tank provided with a membrane component; the anaerobic digestion unit is an independent sludge treatment unit. The system is short in process flow, short in system startup time, stable and high-efficiency in denitrification performance, standard reach of effluent total nitrogen, low in operating energy consumption and material consumption and low in residual sludge yield. Organic matters in the urban sewage are subjected to biological adsorption removal by utilizing biological adsorption, sludge which is discharged through biological adsorption and is enriched in organic matters is subjected to medium-temperature anaerobic digestion treatment to produce biogas to be used for heating and heat preservation of the medium-temperature anaerobic digestion tank and the low-temperature anaerobic ammonia oxidation tank, the organic matters in the urban sewage can be recycled, and the operating energy consumption of the process is further reduced.

The invention discloses a method for treating landfill leachate. The method comprises the following steps of: feeding the landfill leachate into an adjustment tank first, sequentially feeding the landfill leachate into a biological contact oxidation pond, a low-oxygen aeration tank, a nitrosation reaction tank, an anaerobic ammonium oxidation reaction tank and a microwave treater, finally feeding the landfill leachate into a separator, performing precipitation separation to separate active carbon obtained after microwave treatment from the outlet water of the landfill leachate, and then discharging the outlet water which meets the standard. The technology for treating the landfill leachate saves energy and is high in efficiency and low in consumption; and by the method, pollutants such as organic pollutants, nitrogen (N) and phosphorus (P) can be effectively removed, and the environmentally acceptable treatment and discharge of the landfill leachate can be realized finally.

The present invention relates in general to municipal wastewater treatment, and in particular, to a new biological fluidized bed process with high concentration powder carriers used for the treatment of municipal wastewater, wherein the process comprises: flowing the wastewater through a coarse screen and a lifting pump firstly, lifting to a fine screen and grit chamber, and then entering a HPB biochemical tank; dividing the HPB biochemical tank successively into an anaerobic zone, an anoxic zone, an aerobic zone and a concentrated separation zone along the flow direction of the wastewater, adding a compound powder carrier to the anaerobic zone, the anoxic zone and the aerobic zone respectively, and stirring and mixing into a mixture; flowing the mixture into the concentrated separation zone and concentrating and separating, returning the concentrate back to the anaerobic zone; discharging the supernatant from the concentrated separation zone and successively transporting through a high-efficient clarification tank, a filter tank and a disinfection tank to be purified; transporting the discharged excess sludge to a cyclone separation and recovery system; the separated compound powder carrier will be recycled to HPB biochemical tank. The HPB process in the present invention is a highly integrated municipal wastewater treatment process, in which only one lifting operation is required. In addition, it has a small land area, a low operating energy consumption and a high treatment efficiency.

The invention discloses a 3,4-dichloroaniline wastewater treatment system. The system is characterized by comprising an adjusting tank, a precision filtering device, a resin adsorption device, a reaction treatment area sludge treatment device, an aeration device, a dosing device and a control device, the precision filtering device is positioned on the right of the adjusting tank; the resin adsorption device is positioned on the right of the precision filtering device; wherein the reaction treatment area is located on the right side of the resin adsorption device, the sludge treatment device islocated on the right side of the reaction treatment area, the dosing device and the control device are located on the outer side of the reaction treatment area, the aeration device is installed on the inner side of the reaction treatment area, and the reaction treatment area comprises a micro-electrolysis area, a Fenton oxidation area and a coagulative precipitation area. The system is stable inoperation, low in use cost and convenient to manage, 3,4-dichloroaniline in the wastewater can be recycled through the resin adsorption device, the raw material loss is reduced, organic matter in thewastewater is treated through microelectrolysis and a Fenton oxidation reaction, the treatment effect is good, the effluent quality reaches the standard, and environmental pollution is reduced.