CN205442954U - High -efficient nitrogen and phosphorus removal sewage treatment plant - Google Patents
High -efficient nitrogen and phosphorus removal sewage treatment plant Download PDFInfo
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- CN205442954U CN205442954U CN201521104403.7U CN201521104403U CN205442954U CN 205442954 U CN205442954 U CN 205442954U CN 201521104403 U CN201521104403 U CN 201521104403U CN 205442954 U CN205442954 U CN 205442954U
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Abstract
The utility model discloses a high -efficient nitrogen and phosphorus removal sewage treatment plant, the device nitrifies biological filter, clean water basin by membrane mud coupling pond, chemical phosphorus removal pool, good oxygen to establish ties in proper order and form, and what be equipped with between membrane mud coupling pond and clean water basin that backwash pump and backflow pipeline constitute nitrifies the liquid return -flow system, and membrane mud coupling pond is including flow formula membrane mud coupling pond or fixed membrane - mud coupling pond. The utility model discloses the device can realize that synchronous denitrogenation removes the purpose of carbon and dephosphorization, has with low costs, characteristics such as sludge deposit is few, biological multiplication concurrently.
Description
Technical field
This utility model belongs to water-treatment technology field, is specifically related to a kind of high-efficient denitrification and dephosphorization sewage-treatment plant.
Background technology
BAF (BAF) is the New biological membrane method sewage treatment process that developed recently gets up, and has efficient removal of carbon and nitrogen usefulness, floor space is little, operating cost is low, without features such as second ponds.But, the concentration of suspension of water inlet is required higher by biological aerated filter process, need to carry out the pretreatment of complexity, such as conventional coagulating sedimentation, membrane filtration or other group technology, this will increase technological process and the operational management difficulty of BAF undoubtedly, substantial amounts of Organic substance (general COD clearance 40%～70%) can be removed in preprocessing process simultaneously, for this to reach the biological aerated filter process of up-to-date discharging standards for controlling water outlet total nitrogen, too much organic removal will cause the carbon source during denitrification denitrogenation not enough.Southern area problem is particularly acute, southern former water COD/TN is the most on the low side, if preprocessing process eliminates substantial amounts of Organic substance, typically require during follow-up denitrification denitrogenation and add Organic substance carbon source (glucose, methanol, sodium acetate etc.) and supplement Organic substance, the problem that Organic substance carbon source can not be fully utilized and traditional pretreatment causes in former water, not only increase operating cost, result also in CO2 emissions simultaneously and be greatly increased.
In addition, in denitrification and denitrogenation biological filter aerobic nitrification biofilter is combined, although pretreatment can reduce the water inlet concentration of suspension of denitrification and denitrogenation biological filter, but the float in pretreatment water outlet is the highest, cause denitrification denitrogenation pond resistance in running constantly to rise, backwash need to be carried out continually to keep the stable operation of denitrification and denitrogenation biological filter.In addition, organic concentration in the water inlet of follow-up aerobic biofilter may result in the amount reproduction of heterotrophic bacteria, inhibit the nitrobacteria Nitrification to ammonia nitrogen, add backwash frequency simultaneously, Biomass and bioactive recovery excessive cycle in backwash is more easily caused aerobic biofilter frequently, this reduces the treatment efficiency of structures undoubtedly and adds management difficulty and operating cost.
Summary of the invention
This utility model purpose is to provide a kind of high-efficient denitrification and dephosphorization sewage-treatment plant, this device successfully solves and there is the problems such as utilization of carbon source in former water is insufficient, Dephosphorization reagent dosage is excessive, biofilter backwashing period frequent, structures treatment efficiency is relatively low, nitrification effect is bad, extra supplementing denitrifying carbon source in tradition biological aerated filter process, have and purify the feature that sewage efficiency is high, process effluent quality is good, and apparatus structure is simple, with low cost.
For achieving the above object, this utility model provides a kind of high-efficient denitrification and dephosphorization sewage-treatment plant, it is to be sequentially connected in series formed by film mud coupling pond, chemical dephosphorization pond, aerobic nitrification biofilter, clear water reserviors, it is provided with reflux pump and the nitrification liquid return-flow system of reflux line composition between film mud coupling pond and clear water reserviors, and then constitutes the biological reinforced nitrification of biological reinforced hydrolysis, de-carbon, the dephosphorization of denitrogenation materialization strengthening, de-carbon, oil removal (SS), the high-efficient denitrification and dephosphorization sewage-treatment plant of de-carbon three step successively.
Film mud coupling pond includes flow-type film mud coupling pond or fixed film-mud coupling pond, can be film mud coupling anoxic pond or film mud coupling anaerobic pond.
Chemical dephosphorization pond includes Dephosphorization reagent dosing system, agitating device, chemical dephosphorization pond body, discharge pipeline, and chemical dephosphorization pond body is high-efficiency coagulative precipitation tank or magnetic-coagulation sedimentation tank.
Described film mud coupling pond is that flow-type film mud couples pond, and its peripheral effluent is provided with the mesh isolating device separating bio-carrier, includes agitating device, water distribution system, suspension biofilm carrier, biomembrane and suspension mud in its pond.
Described film mud coupling pond is fixed film-mud coupling pond, and fixed film-mud coupling includes water distribution system, fixed type biological membrane carrier, biomembrane and suspension mud in pond.
Described agitating device is underwater stirrer or plug flow device under water, and arranges quantity and be at least 1 group.
Described suspension biofilm carrier filling rate is 5%～70%,
This utility model device sewage disposal specifically comprises the following steps that
(1) biological reinforced hydrolysis, denitrogenation, de-carbon reaction: after the nitrification liquid mixing that pending sewage reflux with clear water reserviors, the water distribution system inflow film mud from bottom couples pond, and biofilm carrier, the surface of suspension mud and growth inside that film mud couples in pond hydrolysis acidification microorganism and obligate denitrifying microorganism.Mixed liquid recycle ratio between film mud coupling pond and clear water reserviors is 10%～400%, and waste water reacts 1h～12h in film mud coupling pond.When film mud coupling pond is flow-type film mud coupling pond, its peripheral effluent is provided with the mesh isolating device separating bio-carrier, and the agitating device in film mud coupling pond makes suspended biological membrane carrier be fluidized state, accelerates the mass transfer rate of pollutant.When film mud coupling pond is fixed film-mud coupling pond, Organic substance and float that former water can be carried by the ectoplasm of hydrolysis acidification microorganism are adsorbed, intracellular exoenzyme is entering endocellular metabolism after being hydrolyzed into little molecule, the float (SS) of incomplete metabolism can become little molecule and be prone to the Organic substance of degraded, obligate denitrifying microorganism then utilizes the Organic substance in raw sewage and the dissolved organic matter after conversion as carbon source, nitrate nitrogen in the backflow nitrification liquid coming from clear water reserviors is reduced to nitrogen, thus realize denitrogenation and remove most of organic purpose.
(2) materialization strengthening dephosphorization, de-carbon, oil removal reaction: through film mud coupling pond mesh isolating device retain, filter after water outlet enter chemical dephosphorization pond,.By adding chemical dephosphorization medicament, remove total phosphorus, Organic substance and the float in sewage, produce chemical sludge then periodically to be discharged by discharge pipeline, concentration of suspension in the water outlet of mud-water separation is less than 70mg/L, and the water outlet after mud-water separation purifies is as the water inlet of aerobic nitrification biofilter.
(3) biological reinforced nitrification, de-carbon react: the water outlet after chemical dephosphorization pond processes enters aerobic nitrification biofilter, and dissolved oxygen is 3.0～8.0mg/L, and hydraulic detention time is 0.5h～12h.Ammonium oxidation is nitrate nitrogen by the apposition growth obligate aerobic nitrification bacterium on biologic packing material layer, the apposition growth aerobic heterotrophic bacteria on biologic packing material layer is by a small amount of remaining organic matter removal, sewage after aerobic nitrification biofilter processes flows into clear water reserviors, the part water outlet of clear water reserviors is as nitrification liquid backflow water, and part water outlet is as standard discharge water outlet.
This utility model efficiently solves, conventional aeration biofilter pretreatment complexity, the problem of backwash frequently sum insufficient to former water utilization of carbon source, stain disease can be made to reach simultaneous denitrification de-carbon and dephosphorization purpose simultaneously, have the feature such as low cost, few, the biological multiplication of sludgd deposition concurrently, there is great application value.
Accompanying drawing explanation
Fig. 1 is one of this utility model high-efficient denitrification and dephosphorization sewage-treatment plant structural representation.
Fig. 2 is the two of this utility model high-efficient denitrification and dephosphorization sewage-treatment plant structural representation.
Detailed description of the invention
nullIn Fig. 1: 1、Inlet channel，2、Elevator pump，3、Flow-type film mud coupling pond，4、Biofilm packing and Sludge Bed mixed zone，5、Water distribution system，6、Suspension mud，7、Floating stuffing，8、Agitating device，9、Mesh isolating device，10、Outlet canal，11、Connect pipeline，12、Chemical dephosphorization pond，13、Dephosphorization medicine system，14、Agitator，15、Outlet canal，16、Discharge pipeline，17、Connect pipeline，18、Aerobic nitrification biofilter，19、Highly effective air bubbler，20、Water distribution system，21、Nitrification biologic packing material layer，22、Clear water zone，23、Outlet canal，24、Aerator，25、Steam line，26、Outlet conduit，27、Water distributing area，28、Nitrification liquid reflux pump，29、Nitrification liquid reflux line，30、Clear water reserviors，31、Discharge tube.
nullIn Fig. 2: 1'、Inlet channel，2'、Elevator pump，3'、Fixed film-mud coupling pond，4'、Fixed filler and Sludge Bed mixed zone，5'、Water distribution system，6'、Suspended sludge bed，7'、Cilium shape biologic packing material or suspension type bioelastic filler，8'、Outlet canal，9'、Connect pipeline，10'、Chemical dephosphorization pond，11'、Medicine system，12'、Agitator，13'、Outlet canal，14'、Discharge pipeline，15'、Connect pipeline，16'、Aerobic aeration biofilter，17'、Highly effective air bubbler，18'、Water distribution system，19'、Nitrification biologic packing material layer，20'、Clear water zone，21'、Outlet canal，22'、Aerator，23'、Steam line，24'、Outlet conduit，25'、Water distributing area，26'、Nitrification liquid reflux pump，27'、Nitrification liquid reflux line，28'、Clear water reserviors，29'、Discharge tube.
This utility model efficiently solves that conventional aeration biofilter is insufficient to former water utilization of carbon source, pretreatment is complicated and backwash problem frequently, and can realize the purpose of simultaneous denitrification de-carbon and dephosphorization, has the feature such as low cost, few, the biological multiplication of sludgd deposition concurrently.
Claims (6)
1. a high-efficient denitrification and dephosphorization sewage-treatment plant, described device is to be sequentially connected in series formed by film mud coupling pond, chemical dephosphorization pond, aerobic nitrification biofilter, clear water reserviors, it is characterized in that between film mud coupling pond and clear water reserviors, being provided with reflux pump and the nitrification liquid return-flow system of reflux line composition, film mud coupling pond includes that flow-type film mud coupling pond or fixed film-mud coupling pond, described flow-type film mud coupling pond or fixed film mud coupling pond are film mud coupling anoxic pond or film mud coupling anaerobic pond.
High-efficient denitrification and dephosphorization sewage-treatment plant the most according to claim 1, it is characterized in that chemical dephosphorization pond includes Dephosphorization reagent dosing system, agitating device, chemical dephosphorization pond body, discharge pipeline, chemical dephosphorization pond body is high-efficiency coagulative precipitation tank or magnetic-coagulation sedimentation tank.
High-efficient denitrification and dephosphorization sewage-treatment plant the most according to claim 1, it is characterized in that described film mud coupling pond is that flow-type film mud couples pond, its peripheral effluent is provided with the mesh isolating device separating bio-carrier, includes agitating device, water distribution system, suspension biofilm carrier, biomembrane and suspension mud in its pond.
High-efficient denitrification and dephosphorization sewage-treatment plant the most according to claim 1, is characterized in that described film mud coupling pond is that fixed film mud couples pond, and the coupling of fixed film mud includes water distribution system, fixed type biological membrane carrier, biomembrane and suspension mud in pond.
High-efficient denitrification and dephosphorization sewage-treatment plant the most according to claim 2, is characterized in that described agitating device is underwater stirrer or plug flow device under water, and arranges quantity and be at least 1 group.
High-efficient denitrification and dephosphorization sewage-treatment plant the most according to claim 3, is characterized in that described suspension biofilm carrier filling rate is 5%～70%.
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| CN201521104403.7U CN205442954U (en) | 2015-12-24 | 2015-12-24 | High -efficient nitrogen and phosphorus removal sewage treatment plant |
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| CN201521104403.7U CN205442954U (en) | 2015-12-24 | 2015-12-24 | High -efficient nitrogen and phosphorus removal sewage treatment plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105502826A (en) * | 2015-12-24 | 2016-04-20 | 安徽华骐环保科技股份有限公司 | Efficient nitrogen and phosphorus removal waste water treatment process and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105502826A (en) * | 2015-12-24 | 2016-04-20 | 安徽华骐环保科技股份有限公司 | Efficient nitrogen and phosphorus removal waste water treatment process and device |
| CN105502826B (en) * | 2015-12-24 | 2019-01-29 | 安徽华骐环保科技股份有限公司 | A kind of high-efficient denitrification and dephosphorization sewage treatment process and its device |
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