CN106630449A - Method for treatment organic waste water of synthetic pharmacy - Google Patents

Abstract

The invention provides a method for treatment organic waste water of synthetic pharmacy. The method comprises the procedures of evaporation and concentration, vapor condensation, condensed liquid hydrolytic acidification, aerobic treatment, biological filtration tower treatment and the like; and stable and up-to-standard discharge of the treated waste water can be realized.

Description

The processing method of synthesis pharmaceutical organic wastewater

Technical field

The present invention relates to pharmacy organic wastewater, particularly after organic solvent recovery, COD_CrMore than 10000mg/L, salt Concentration is more than 5000mg/L, and a kind of processing method of the synthesis pharmaceutical organic wastewater of complicated component.

Background technology

Medicine is the necessary for ensureing the mankind and animals and plants health, and which produces the Pollutants in Wastewater COD concentration height for producing, Complicated component, particularly after organic solvent recovery, Pollutants in Wastewater COD concentration is extra high simultaneously containing substantial amounts of Salt, intractability are very big.If the waste water is not processed is directly discharged into environment, severe contamination will be caused to environment.At present through organic The processing method of the chemical industrial organic wastewater after solvent recovery mainly first carries out advanced oxidation（Such as iron-carbon micro-electrolysis, metal powder also Original, Fenton methods etc.）Pretreatment, then carries out a biological disposal upon.As the salinity in waste water is very high, the growth to microorganism has significantly Inhibitory action, has a strong impact on biological treatment effect, and waste water is difficult to stably reaching standard discharge.The Organic substance of exploitation energy stably reaching standard discharge The processing method of the synthesis pharmaceutical organic wastewater high with salt content has larger practical value.

The content of the invention

For current synthesis pharmaceutical organic wastewater, particularly after organic solvent recovery, COD_CrMore than 10000mg/L, Salinity is more than 5000mg/L, and the problem of the processing method of the synthesis pharmaceutical organic wastewater of complicated component, the mesh of the present invention Be find can stably reaching standard discharge synthesis pharmaceutical organic wastewater processing method, it is characterised in that by synthesis pharmaceutical organic waste Water adds evaporation concentrator to be evaporated concentration.The steam that waste water is produced in evaporating concentration process is condensed into condenser.It is useless The concentrated solution that water is produced in evaporating concentration process is burned into incinerator.Concentrating degree of the waste water in evaporation concentrator Determine by the requirement of burning process.The condensation efficiency of the steam that condenser is produced to evaporating concentration process is pressed more than 98% design.It is cold The fixed gas that solidifying process is produced is adsorbed with solid adsorbent.The condensed fluid that condensation process is produced enters hydrolysis acidification regulating reservoir, cold The time of staying of the lime set in hydrolysis acidification regulating reservoir is 6h～10h.The water outlet of hydrolysis acidification regulating reservoir enters aerobic reaction tank, The time of staying of the waste water in aerobic reaction tank is 4h～10h.The water outlet of aerobic reaction tank is precipitated into sedimentation tank, during precipitation Between be 1h～3h.The sludge being settled out carries out solid-liquor separation, and the sludge isolated makees dangerous disposition of solid waste, isolates Waste water returns aerobic reaction tank.The supernatant waste water of sedimentation tank send multi-layer biological filter tower to process.The filler of biological filtering tower combined working is porous Haydite or activated carbon, are 0.5m～1.2m per thickness degree, and gross thickness is 2m～4m.The dominant bacteria of biological filtering tower combined working is photosynthetic bacteria In rhodopseudomonas（Rhodopseudomonas）.The hydraulic load of biological filtering tower combined working is 40 m³/m².d～120m³/m².d.It is raw The standard water discharge discharge of thing filter tower.

The object of the present invention is achieved like this, through organic solvent reclaim synthesis pharmaceutical organic wastewater in evaporation and concentration During most organic and salts substances be retained in concentrated solution, on a small quantity into steam, this is follow-up steam condensed fluid Biochemical treatment and the burning of concentrated solution create advantage.Steam condensate enters hydrolysis acidification regulating reservoir, in microorganism In the presence of larger molecular organicses are changed into into small organic molecule, be that follow-up Aerobic Process for Treatment creates favorable conditions.After hydrolysis acidification Waste water enter aerobic reaction tank, in the presence of aerobic microbiological, further reduce organic loading；In nitrifier and denitrification Go to denitrogenate in the presence of bacterium.Waste water finally enters porous ceramic grain or activated carbon biological filtering tower combined working, in microorganism, particularly red false unit cell In the presence of bacterium, further organics removal and nitrogen, it is ensured that the waste water stably reaching standard discharge after process.

Relative to existing method, the outstanding advantages of the present invention are to reduce the organic of subsequent biochemical process by evaporation and concentration Pollutional load, is that stably reaching standard discharge creates favorable conditions.Increase the porous ceramic grain or activated carbon of rhodopseudomonas dominant bacteria Biological filtering tower combined working treatment process, it is ensured that the waste water stably reaching standard discharge after process.

Specific implementation method

Embodiment 1：Daily 1m³Process the synthesis pharmaceutical organic wastewater after organic solvent is reclaimed（Composition：pH5.7、 COD_Cr52000 mg/L, T-N42.3 mg/L, T-P37.3mg/L, salinity 5500mg/L, colourity 1800, SS170mg/L）, Jing Evaporation and concentration（Concentrated solution generation rate 29%）, steam condensation（Efficiency 98.5%, condensed fluid CODCr2900 mg/L）, hydrolysis acidification （8h）, it is aerobic（6h）And biological filtering tower combined working（Porous ceramic grain packing layer gross thickness 2m, hydraulic load 80m³/m².d）Water outlet after process Pollutant levels are respectively COD_Cr45mg/L, T-N2.7m/L, T-P0.1mg/L, colourity 15.

Embodiment 2：23m is processed daily³Synthesis pharmaceutical organic wastewater after organic solvent is reclaimed（Composition：pH5.8、 COD_Cr16000 mg/L, T-N37.3 mg/L, T-P31.1mg/L, salinity 15000mg/L, colourity 520, SS170mg/L）, Jing Evaporation and concentration（Concentrated solution generation rate 25%）, steam condensation（Efficiency 98.7%, condensed fluid COD_Cr1800 mg/L）, hydrolysis acidification （6h）, it is aerobic（4h）And biological filtering tower combined working（Many active carbon filler layer gross thickness 3m, hydraulic load 120m³/m².d）Water outlet after process Pollutant levels are respectively COD_Cr41mg/L, T-N2.4m/L, T-P0.1mg/L, colourity 11.

Claims (1)

1. a kind of processing method of synthesis pharmaceutical organic wastewater, it is characterised in that by COD_CrMore than 10000mg/L, salinity is big Evaporation concentrator is added to be evaporated concentration in the synthesis pharmaceutical organic wastewater of 5000mg/L, waste water is produced in evaporating concentration process Raw steam is condensed into condenser, and the concentrated solution that waste water is produced in evaporating concentration process is burned into incinerator, is given up Requirement determination of concentrating degree of the water in evaporation concentrator by burning process, the steam that condenser is produced to evaporating concentration process Condensation efficiency by more than 98% design, condensation process produce fixed gas with solid adsorbent adsorb, condensation process generation it is cold Lime set enter hydrolysis acidification regulating reservoir, the time of staying of the condensed fluid in hydrolysis acidification regulating reservoir be 6h～10h, hydrolysis acidification adjust The water outlet in section pond enters aerobic reaction tank, and the time of staying of the waste water in aerobic reaction tank is 4h～10h, aerobic reaction tank Water outlet is precipitated into sedimentation tank, and the sedimentation time is 1h～3h, and the sludge being settled out carries out solid-liquor separation, and the sludge isolated is endangered Dangerous disposition of solid waste, the waste water isolated return aerobic reaction tank, and the supernatant waste water of sedimentation tank send multi-layer biological filter tower Process, the filler of biological filtering tower combined working is porous ceramic grain or activated carbon, filler gross thickness is 2m～4m, the dominant bacteria of biological filtering tower combined working is Rhodopseudomonas in photosynthetic bacteria, the hydraulic load of biological filtering tower combined working is 40 m³/m².d～120m³/m².d, biological filtering tower combined working goes out Water qualified discharge.