CN205710298U - A kind of fixed film mud coupling pond type denitrogenation dephosphorizing wastewater treatment equipment - Google Patents

A kind of fixed film mud coupling pond type denitrogenation dephosphorizing wastewater treatment equipment Download PDF

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Publication number
CN205710298U
CN205710298U CN201620340569.7U CN201620340569U CN205710298U CN 205710298 U CN205710298 U CN 205710298U CN 201620340569 U CN201620340569 U CN 201620340569U CN 205710298 U CN205710298 U CN 205710298U
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pond
fixed film
film mud
coupling
wastewater treatment
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CN201620340569.7U
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郑俊
张德伟
郑杰
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HUAQI ENVIRONMENT PROTECTION SCIENCE AND TECHNOLOGY Co Ltd
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HUAQI ENVIRONMENT PROTECTION SCIENCE AND TECHNOLOGY Co Ltd
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Abstract

The utility model discloses fixed film mud coupling pond type denitrogenation dephosphorizing wastewater treatment equipment, described device is sequentially connected in series connection is formed by fixed film mud coupling pond, sedimentation tank, aerobic nitrification biofilter, chemical dephosphorization pond, described sedimentation tank couples with fixed film mud and is provided with sludge refluxing apparatus between pond, and described aerobic nitrification biofilter couples with fixed film mud and is provided with nitrification liquid reflux between pond.This utility model device can effectively solve that, conventional aeration biofilter pretreatment insufficient to former water utilization of carbon source be complicated and the backwash problem such as frequently, improves Nitrogen/Phosphorus Removal, has the feature such as low cost, biological multiplication concurrently.

Description

A kind of fixed film mud coupling pond type denitrogenation dephosphorizing wastewater treatment equipment
Technical field
This utility model belongs to water-treatment technology field, is specifically related to a kind of denitrogenation dephosphorizing wastewater treatment equipment.
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 are little, operating cost is low, without features such as second ponds.But, biological aerated filter process is to water inlet Concentration of suspension require higher, need to carry out the pretreatment of complexity, such as conventional coagulating sedimentation, membrane filtration or other combination Technique, this will increase technological process and the operational management difficulty of BAF undoubtedly, and can go simultaneously in preprocessing process Except substantial amounts of Organic substance (general COD clearance 40%~70%), this to reach up-to-date country row for controlling water outlet total nitrogen For putting the biological aerated filter process of standard, too much organic removal will cause the carbon source during denitrification denitrogenation not Foot.Southern area problem is particularly acute, and southern former water COD/TN is the most on the low side, substantial amounts of has if eliminating in preprocessing process Machine thing, typically requires during follow-up denitrification denitrogenation and adds Organic substance carbon source (glucose, methanol, sodium acetate etc.) and mend Fill Organic substance, the problem that Organic substance carbon source can not be fully utilized and traditional pretreatment causes in former water, not only Add operating cost, result also in CO2 emissions simultaneously and be greatly increased.Additionally, at denitrification and denitrogenation biological filter In the group technology of aerobic nitrification biofilter, although the water inlet float that pretreatment can reduce denitrification and denitrogenation biological filter is dense Degree, but the float in pretreatment water outlet is the highest, causes denitrification denitrogenation pond resistance in running constantly to rise, and needs Carry out backwash continually to keep the stable operation of denitrification and denitrogenation biological filter.Additionally, the entering of follow-up aerobic biofilter Organic concentration in water may result in the amount reproduction of heterotrophic bacteria, it is suppressed that the nitrobacteria Nitrification to ammonia nitrogen, increases simultaneously Add backwash frequency, Biomass and bioactive recovery cycle mistake in backwash is more easily caused aerobic biofilter frequently Long, this reduces the treatment efficiency of structures undoubtedly and adds management difficulty and operating cost.
In traditional biological aerated filter process, the removal effect of phosphorus is the most poor, needs to coordinate employing preposition or rearmounted Chemical dephosphorization measure, in the engineering of preposition biological phosphate-eliminating, not only orthophosphate can consume substantial amounts of Dephosphorization reagent, big in sewage The total phosphorus of amount is removed, and in waste water, the content of low concentration phosphorus is highly detrimental to the growth of microorganism, has had a strong impact on follow-up The usefulness of biological treatment, simultaneously in the engineering of preposition biological phosphate-eliminating, the existence of a large amount of fine particles, colloid or Organic substance etc. is also Can consume substantial amounts of Dephosphorization reagent, this adds the operating cost of sewage disposal undoubtedly.Therefore, according to denitrogenation dephosphorizing principle, carry High volumetric loading, Appropriate application sewage carbon source, the dosage of minimizing medicament, reduction sewage disposal energy consumption, raising denitrogenation dephosphorizing effect Rate is primary goal and the R&D direction that current Novel sewage processes technique.
Summary of the invention
This utility model purpose is to provide a kind of fixed film mud coupling pond type denitrogenation dephosphorizing wastewater treatment equipment, this device Can successfully solve and tradition biological aerated filter process exists utilization of carbon source in former water is insufficient, Dephosphorization reagent dosage mistake The problems such as greatly, biofilter backwashing period is frequent, denitrogenation dephosphorizing usefulness is low.
For achieving the above object, this utility model fixed film mud coupling pond type denitrogenation dephosphorizing wastewater treatment equipment, described Waste Water Treatment is sequentially connected in series connection by fixed film mud coupling pond, sedimentation tank, aerobic nitrification biofilter, chemical dephosphorization pond Composition, described sedimentation tank couples with fixed film mud and is provided with sludge refluxing apparatus between pond, described aerobic nitrification biofilter Couple with fixed film mud and between pond, be provided with nitrification liquid reflux.
Described sludge refluxing apparatus includes sludge reflux pump and sludge return pipe, return sludge ratio be 10%~ 200%.
Described nitrification liquid return-flow system includes nitrification liquid reflux pump and nitrification liquid reflux line, and mixed liquid recycle ratio is 10%~400%.
Described film mud coupling pond is film mud coupling anoxic pond or film mud coupling anaerobic pond.
Water distribution system, fixed type biological membrane carrier, biomembrane and suspension is included in described fixed film mud coupling pond Mud
Described 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.
The waste water treatment process step of this utility model flow-type film mud coupling pond type denitrogenation dephosphorizing wastewater treatment equipment is such as Under:
(1) after the nitrification liquid that pending sewage refluxes with clear water reserviors mixes, the water distribution system from bottom flows into fixed film Mud coupling pond, biofilm carrier, the surface of suspension mud and growth inside in film mud coupling pond hydrolysis acidification microorganism With obligate denitrifying microorganism, the mixed liquid recycle ratio between fixed film mud coupling pond and clear water reserviors is 10%~400%, waste water 1h~12h is reacted in film mud coupling pond.
(2) nitrification, de-carbon reaction: the water outlet after sedimentation tank processes enters aerobic nitrification biofilter, and dissolved oxygen is 2.5 ~8.0mg/L, hydraulic detention time is 0.5h~12h.The apposition growth obligate aerobic nitrification bacterium on biologic packing material layer is by ammonia Nitrogen is oxidized to nitrate nitrogen, and the apposition growth aerobic heterotrophic bacteria on biologic packing material layer is by a small amount of remaining organic matter removal, warp Part water outlet after aerobic nitrification biofilter processes is entered as chemical dephosphorization pond as nitrification liquid backflow water, part water outlet Water.
(3) dephosphorization reaction: the water outlet after aerobic nitrification biofilter retains, filters enters chemical dephosphorization pond, described The dissolved oxygen of aerobic nitrification biofilter is 2.5~8.0mg/L, and hydraulic detention time is 0.5h~12h.Remove by adding chemistry Phosphorus medicament, removes the total phosphorus in sewage, produces chemical sludge and is then periodically discharged by discharge pipeline, and the water outlet through mud-water separation reaches Mark discharge.
It is raw that this utility model fixed film mud coupling pond type denitrogenation dephosphorizing wastewater treatment equipment can effectively solve conventional aeration Thing filter tank pretreatment is complicated, backwash frequently with to problems such as former water utilization of carbon source are insufficient, improve Nitrogen/Phosphorus Removal, have concurrently The features such as low cost, biological multiplication, final outflow water qualified discharge, there is great application value.
Detailed description of the invention
Accompanying drawing explanation
Fig. 1 is fixed film mud coupling pond type denitrogenation dephosphorizing wastewater treatment equipment structural representation.
1, inlet channel, 2, elevator pump, 3, fixed film-mud coupling pond, 4, suspension mud and fixed biofilm carrier Mixed zone, 5, water distribution system, 6, suspension Sludge Bed, 7, fixed biofilm carrier, 8, outlet canal, 9, connect pipeline, 10, precipitation Pond, 11, sludge return pipe, 12, sludge reflux pump, 13, tube settling district, 14, effluent weir, 15, connect pipeline, 16, aerobic Nitrification biofilter, 17, highly effective air bubbler, 18, water distribution system, 19, fixing biologic packing material layer, 20, exhalant region, 21, go out Water channel, 22, aerator, 23, steam line, 24, connect pipeline, 25, chemical dephosphorization pond, 26, medicine system, 27, agitator, 28, outlet canal, 29, drainage pipeline, 30, spoil disposal pipeline, 31, nitrification liquid reflux pump, 32, nitrification liquid reflux line.

Claims (6)

1. a fixed film mud coupling pond type denitrogenation dephosphorizing wastewater treatment equipment, it is characterised in that: described wastewater treatment equipment It is sequentially connected in series connection is formed by fixed film mud coupling pond, sedimentation tank, aerobic nitrification biofilter, chemical dephosphorization pond, described Sedimentation tank couple with fixed film mud and between pond, be provided with sludge refluxing apparatus, described aerobic nitrification biofilter and fixed film Mud coupling is provided with nitrification liquid reflux between pond.
Fixed film mud the most according to claim 1 coupling pond type denitrogenation dephosphorizing wastewater treatment equipment, it is characterised in that: institute The sludge refluxing apparatus stated includes sludge reflux pump and sludge return pipe, and return sludge ratio is 10%~200%.
Fixed film mud the most according to claim 1 coupling pond type denitrogenation dephosphorizing wastewater treatment equipment, it is characterised in that: institute The nitrification liquid reflux stated includes nitrification liquid reflux pump and nitrification liquid reflux line, and mixed liquid recycle ratio is 10%~400%.
Fixed film mud the most according to claim 1 coupling pond type denitrogenation dephosphorizing wastewater treatment equipment, it is characterised in that: institute The fixed film mud coupling pond stated is film mud coupling anoxic pond or film mud coupling anaerobic pond.
Fixed film mud the most according to claim 4 coupling pond type denitrogenation dephosphorizing wastewater treatment equipment, it is characterised in that: institute Water distribution system, fixed type biological membrane carrier, biomembrane and suspension mud is included in the fixed film mud coupling pond stated.
Fixed film mud the most according to claim 1 coupling pond type denitrogenation dephosphorizing wastewater treatment equipment, it is characterised in that: change Learning dephosphorization pond and include 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.
CN201620340569.7U 2016-04-20 2016-04-20 A kind of fixed film mud coupling pond type denitrogenation dephosphorizing wastewater treatment equipment Active CN205710298U (en)

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CN201620340569.7U CN205710298U (en) 2016-04-20 2016-04-20 A kind of fixed film mud coupling pond type denitrogenation dephosphorizing wastewater treatment equipment

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CN201620340569.7U CN205710298U (en) 2016-04-20 2016-04-20 A kind of fixed film mud coupling pond type denitrogenation dephosphorizing wastewater treatment equipment

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105967435A (en) * 2016-04-20 2016-09-28 安徽华骐环保科技股份有限公司 Double-circulation nitrogen and phosphorus removal wastewater treatment system and process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105967435A (en) * 2016-04-20 2016-09-28 安徽华骐环保科技股份有限公司 Double-circulation nitrogen and phosphorus removal wastewater treatment system and process

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