CN105399202A - Method for removing phosphorous based on high-efficiency promotion of spongy iron corrosion in process of nitrogen removal by denitrification - Google Patents

Method for removing phosphorous based on high-efficiency promotion of spongy iron corrosion in process of nitrogen removal by denitrification Download PDF

Info

Publication number
CN105399202A
CN105399202A CN201511018000.5A CN201511018000A CN105399202A CN 105399202 A CN105399202 A CN 105399202A CN 201511018000 A CN201511018000 A CN 201511018000A CN 105399202 A CN105399202 A CN 105399202A
Authority
CN
China
Prior art keywords
sponge iron
sulphur
corrosion
denitrification
dephosphorization
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201511018000.5A
Other languages
Chinese (zh)
Inventor
郝瑞霞
范军辉
徐忠强
周彦卿
王卫东
王冬月
钟丽燕
朱晓霞
万京京
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing University of Technology
Original Assignee
Beijing University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing University of Technology filed Critical Beijing University of Technology
Priority to CN201511018000.5A priority Critical patent/CN105399202A/en
Publication of CN105399202A publication Critical patent/CN105399202A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/06—Nutrients for stimulating the growth of microorganisms

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

The invention provides a method for removing phosphorous based on high-efficiency promotion of spongy iron corrosion in the process of nitrogen removal by denitrification, belonging to the field of environment engineering technology. Sulphur can be used both as an electron donor for denitrification and as a reinforcing agent for promoting corrosion of spongy iron to remove phosphorous; when spongy iron and sulphur are mixed and put into a reactor, the phosphorous removal effect through corrosion of spongy iron can be improved; and when a mixture of sulphur mainly exerting sulfur-based autotrophic denitrification effect and spongy iron mainly exerting phosphorous removal effect through corrosion is used as a filling material of a denitrification filter tank, the effect of phosphorous removal can be improved, the process of denitrification is reinforced, so the dual effects of in-depth phosphorous removal and synchronous nitrogen removal on low carbon-nitrogen-ratio reclaimed water are obtained. The method provided by the invention has good application prospects in treatment of high-quality reclaimed water.

Description

A kind of based on promotion sponge iron corrosion phosphorus removing method efficient in denitrification denitrogenation process
Technical field
The present invention relates to one and be applicable to reuse water advanced nitrogen phosphorus removing method, based on sponge iron as the method strengthening its corrosion dephosphorization during denitrification filter pool filler, belong to field of environment engineering technology.
Background technology
Recycling sewage generated by making is the inevitable approach solving water resources crisis.Owing to limiting by sewage disposal technology, it is complicated that traditional biological carbon and phosphorous removal combined method runs control condition, usually can not ensure good Nitrogen/Phosphorus Removal, and technique is too complicated or dosage is too much, and operational management cost is higher.There are some researches show, nitrogen, phosphorus are the control selector of most of body eutrophication.For the closed water area such as lake, reservoir, when in water body, inorganic states total nitrogen content is greater than 0.2mg/L, when total phosphorus is greater than 0.01mg/L, just likely cause the generation of wawter bloom phenomenon.Therefore, the content controlling nitrogen, phosphorus, particularly phosphorus in reuse water seems particularly important for guarantee ecological safety.
The phosphorus removing method of generally acknowledging at present has two kinds: biological phosphate-eliminating and chemical dephosphorization (comprising adsorption and dephosphorization), but traditional biological dephosphorization has control condition harshness (anaerobic-aerobic), the shortcomings such as the cycle is long, chemical dephosphorization has fast by comparison, strong adaptability, the advantage such as stable, effective.Water outlet total phosphorus, in dephosphorization, generally can control at below 1mg/L by biological phosphate-eliminating by current common sewage work, water outlet total phosphorus can be controlled at below 0.5mg/L by chemical dephosphorization, but removes restricted further.Therefore, reuse water deep phosphorous removal technology is significant for propelling recycling sewage generated by making efficiently for developing low-cost.
Sponge iron is one of water treatment customary filler, the conventional filler doing industrial Water purification oxygen scavenger or denitrification filter pool denitrogenation dephosphorizing.Because sponge iron internal structure is loose porous, be convenient to sponge iron and water oxygen state material reacts and is corroded; On the other hand, Zero-valent Iron and carbon granule form micro-galvanic cell and also make sponge iron constantly corrode.The Fe that sponge iron corrosion produces 2+with the Fe of oxidation generation further 3+and their hydrate has to phosphorus that stronger volume is swept, flocculated, precipitating action, form Fe 3(PO 4) 2, FePO 4dephosphorization object is reached Deng sedimentable matter; The electronics that Zero-valent Iron corrosion simultaneously produces also can participate in denitrification denitrogenation reaction.Therefore, in denitrification filter pool, the corrosion of strengthening sponge iron, both can improve dephosphorization efficiency by using, also be conducive to denitrification process simultaneously.
King builds superfine people when utilizing filler using sponge iron as three-diemsnional electrode biomembrane process, and mainly promote sponge iron corrosion by galvanic action, phosphor-removing effect can reach 81%, and in water outlet, the content of phosphorus meets reuse water standard.But corrode sponge iron dephosphorization by electric current and will increase operational management cost, therefore how to promote sponge iron to corrode and improve the research further of denitrogenation dephosphorizing efficiency needs.
Summary of the invention
The present invention proposes a kind of based on the method promoting sponge iron corrosion dephosphorization efficient in denitrification denitrogenation process.
Technical scheme of the present invention for achieving the above object, it is characterized in that, sulphur not only as denitrification electron donor but also can corrode the reinforcer of dephosphorization as sponge iron, added by sponge iron in sewage or reuse water, carry out strengthening sponge iron corrosion dephosphorization together with sulphur.
Corrosion dephosphorization particular content is: sponge iron and sulphur being mixed (as by sponge iron and sulphur mass ratio 3:2) puts into reactor, shake or under the impact of current, make sponge iron and the abundant contact reacts of sulphur, sponge iron carries out corrosion dephosphorization.
Or sponge iron, sulphur and other fillers mixing (as gac) mixed (as according to mass ratio 3:1:1.5) and load denitrification filter pool and carry out corrosion dephosphorization.
In the process of above-mentioned corrosion dephosphorization, earthquake or under water impact condition, FeS and the FeOOH atrament suspended in aqueous, the PO of FeS and FeOOH constantly and in aqueous systems 4 3-react and be deposited to reactor bottom, thus strengthening sponge iron corrosion dephosphorization.
FeS and PO 4 3-reaction changes into the FePO of more indissoluble 4precipitation, FeOOH quick adsorption PO 4 3-and form multinuclear di iron (Fe 4(PO 4) 3(OH) 3) precipitation, FePO 4with multinuclear di iron (Fe 4(PO 4) 3(OH) 3) be constantly precipitated to the lower floor of the aqueous solution, under sulphur existence condition, sponge iron continues corrosion and generates new FeS and FeOOH material and be suspended in water simultaneously, thus the corrosion of strengthening sponge iron.
Sulphur of the present invention is also one of conventional filler of water treatment, and elemental sulfur can participate in denitrification process as electron donor, especially for municipal wastewater and the reuse water degree of depth denitrification denitrogenation of low ratio of carbon to ammonium.Batchelor etc. are deduced the stoichiometric relation formula (1) of sulphur autotrophic denitrification technique when carrying out autotrophic denitrification with elemental sulfur as electron donor, can produce H in this process +, pH can be made to reduce maintenance system sour environment, and sour environment is conducive to sponge iron corrosion.Moreover, because the redox potential of sulphur is higher than Zero-valent Iron (φ θ(S/S 2-)=0.48V, φ θ(Fe 2+/ Fe)=-0.44V), and owing to forming FeS or FePO 4precipitation causes condition electropotential φ θ '(FeS/Fe), φ θ(FePO 4/ Fe 2+) reduce further, therefore sulphur can react with sponge iron the FeS generated, and FeS changes into the FePO of more indissoluble further 4precipitation, thus accelerate sponge iron corrosion.
55S+20CO 2+50NO 3 -+48H 2O+4NH 4 +→44C 2H 7O 2N+25N 2+55SO 4 2-+64H +(1)
Sulphur mixes as filler with sponge iron by certain mass ratio by the present invention, has carried out static experiment and dynamic denitrification filter pool test run(s) respectively, investigates sulphur in denitrification process and sponge iron is corroded to the effect of dephosphorization.Experimental result shows, compares with simple sponge iron dephosphorization, and sulphur sponge iron mixed fillers all considerably improves phosphor-removing effect.Therefore, to main sulphur be act as with sulphur autotrophic denitrification and mix as denitrification filter pool filler using the sponge iron corroding dephosphorization function, both denitrification effect can be improved, again can reinforced phosphor-removing, realize the synchronous dephosphorization function of advanced nitrogen of low ratio of carbon to ammonium reuse water.The present invention has good application prospect for high-quality recycled water process.
Of the present invention is fast, efficiently that the speed for the sponge iron do not added under sulphur state of value is relatively fast, and efficiency is high, and dephosphorization efficiency by using improves at least 30%.
Compared with prior art, the invention has the advantages that:
(1) the present invention finds in denitrification denitrogenation process, is mixed by the sponge iron of certain mass ratio with sulphur filler, and can promote that sponge iron corrodes dephosphorization, compare with simple sponge iron, dephosphorization efficiency by using improves about 30%.Its dephosphorization mechanism is that reaction system generates FeS, FeOOH, realizes rapidly and efficiently dephosphorization by chemical oxidation precipitation and galvanic corrosion effect.
(2) by a certain proportion of sulphur and sponge iron mixed fillers application denitrification bio-filter technique, denitrogenation synchronous high-efficiency phosphor-removing effect can be realized.Compare with simple sponge iron filler, sulphur iron mixed fillers dephosphorization efficiency by using improves 30%.Its principle is: except the oxidation precipitation effect between sulphur sponge iron, and the sulphur autotrophic denitrification using sulphur as electron donor acts on the H that denitrogenation produces simultaneously +sponge iron corrosion can be accelerated, also further enhance dephosphorization process.
(3) in the present invention, sponge iron and sulphur are all cheap material for water treatment, both can be used as the electron donor needed for biological denitrification process, reduce denilrification system to the demand of carbon source; Synchronous high-efficiency dephosphorization can be realized again, be particularly suitable for the reuse water advanced nitrogen dephosphorization of low ratio of carbon to ammonium.
Accompanying drawing explanation
Fig. 1 example 1 experimental group I atrament X-ray diffraction (XRD) analyzes;
Fig. 2 example 1 water outlet TP concentration and clearance contrast;
Fig. 3 example 1 water outlet TFe concentrations versus;
Fig. 4 example 2 is TN, TP clearance under different HRT;
Fig. 5 example 2 is pH value under different HRT.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, and following instance is intended to the present invention is described, does not limit the scope of the invention.
The present invention is mainly applicable to process low ratio of carbon to ammonium reuse water deep phosphorous removal.
The above-mentioned control group I being first filler by the experimental group I that is filler with sponge iron and sulphur and simple sponge iron carries out static beaker experiments (embodiment 1); Then dynamic operation denitrification filter pool (embodiment 2), wherein using sponge iron, sulphur and gac for filler is as experimental group II, with sponge iron and gac for filler II as a control group.By effect and the dephosphorization mechanism thereof of Static and dynamic experimental analysis sulphur strengthening sponge iron corrosion dephosphorization.
Embodiment 1
Test water for add a certain amount of CH in tap water 3cOONa, KNO 3and KH 2pO 4the artificial distribution of simulated sewage treatment plant secondary effluent.Control TN, TP concentration is as follows: ρ (TN)=ρ (NO 3-N)=35mg.L -1, ρ (H 2pO 4-P)=1.3mg.L -1.Use 1molL simultaneously -1hydrochloric acid and 1molL -1sodium hydroxide solution regulates the pH value of water distribution to maintain 6.8 ~ 7.2.
The filler of experimental group I adopts the sponge iron particle of 150g particle diameter 4-5mm and the sulfur granule of 100g particle diameter 2-3mm, mixes and is put in 500mL Erlenmeyer flask.The filler of control group I adopts the sponge iron particle of equal in quality, and other control conditions are all identical with test group I.Hydraulic detention time HRT is 24h, and shaking table shakes speed control built in 64r/min, temperature 28 ± 2 DEG C.
Embodiment 2
Experimental water for add a certain amount of CH in tap water 3cOONa, KNO 3and KH 2pO 4the artificial distribution of simulated sewage treatment plant secondary effluent.Control TN, TP concentration is as follows: ρ (TN)=ρ (NO 3-N)=30mg.L -1, ρ (H 2pO 4-P)=1.5mg.L -1.Use 1molL simultaneously -1hydrochloric acid and 1molL -1sodium hydroxide solution regulates the pH value of water distribution to maintain 7.0 ~ 7.5.
Reactor adopts internal diameter 25cm, the synthetic glass post of height 0.6m, useful volume 8L.The filler composition of experimental group II and control Group II is as shown in table 1, and wherein the particle diameter of sponge iron is 5-8mm, and the particle diameter of sulphur is 2-3mm.Hydraulic detention time HRT controls respectively at 2h, 4h and 8h.
Table 1 reactor filler forms
Under above embodiment, be applied in the technique of reuse water deep phosphorous removal by sponge iron and sulphur compounded mix, reinforced phosphor-removing effect makes effluent quality reach " urban sewage reutilization water for scenic environment use water quality " standard.Compare under same condition with on the simultaneous test dephosphorization efficiency by using only dosing sponge iron filler and have significant improvement, it is obvious that the method is applicable to intensifying regenerating water depth phosphor-removing effect.
Static dephosphorization experiment particular content is: by sponge iron and sulphur in mass ratio 3:2 mix and put into reactor, shake or sponge iron and the abundant contact reacts of sulphur can be made under the impact of current, measure Inlet and outlet water TP, TFe concentration, and adopt X-ray diffractometer (XRD) analytical reaction product component, resolve sulphur and promote sponge iron corrosion phosphor-removing effect and mechanism thereof.Result shows, as shown in Figure 2, experimental group ITP clearance can reach more than 95%, exceeds 30% than control group I; Water outlet TP concentration at below 0.1mg/L, 1.2mg/L lower than control group I; As shown in Figure 3, experimental group water outlet TFe concentration ratio control group exceeds 1.0mg/L, and visible sulphur is the key factor promoting sponge iron corrosion.X-ray diffraction spectrum (XRD) (as shown in Figure 1) shows, the black suspension material main component in experimental group water is FeS and FeOOH.According to the principles of chemistry of reaction system, in conjunction with X-ray diffractometer (XRD) analytical results, this system is mainly chemical oxidation precipitation and galvanic corrosion effect dephosphorization: first, sulphur and sponge iron interact and generate black FeS (Ksp=6.3 × 10 -18), newly-generated FeS can further with PO 4 3-reaction changes into FePO 4precipitation (Ksp=1.3 × 10 -22), therefore, sulphur facilitates the corrosion oxidation of sponge iron; Secondly, SO is being rich in 4 2-, NO 3 -environment under, sponge iron corrosion produce Fe 3+hydrolysate Fe (OH) 3enough generation FeOOH, FeOOH of transforming have quick adsorption PO 4 3-and form multinuclear di iron (Fe 4(PO 4) 3(OH) 3) precipitation, can rapidly by the phosphorus ligands in water; Finally, sponge iron particle inner carbon iron formation galvanic cell makes sponge iron continue corrosion dephosphorization.
Dynamic experiment particular content is: by sponge iron, sulphur and gac in mass ratio 3:1:1.5 mix load denitrification filter pool (experimental group II), and under hydraulic detention time (HRT) is for 2h, 4h, 8h condition, carry out contrast with the only denitrification filter pool (control Group II) of filling sponge iron and active carbon filler (mass ratio is 2:1) and run, measure Inlet and outlet water TP, TFe concentration, analyze sulphur and promote sponge iron corrosion dephosphorization and synchronous denitrification dephosphorizing effect thereof.As shown in Figure 4, result shows, experimental group II when HRT=2h, 4h and 8h, TP clearance respectively 63%, 87% and about 90%, respectively higher than control Group II by 30%, 40% and 40%; And can synchronous denitrification dephosphorizing be realized, experimental group II is when HRT=2h, 4h and 8h, and TN clearance, respectively 70%, 80% and about 90%, improves 35%, 30% and 30% respectively than control Group II; As shown in Figure 5, find by analyzing Inlet and outlet water pH value, experimental group water outlet pH value is lower than control group.Analyzing this system dephosphorization mechanism as follows: except chemical oxidation precipitation and galvanic corrosion dephosphorization function, take sulphur as the H that the autotrophic denitrification process of electron donor produces +in the corrosion of promotion sponge iron.

Claims (4)

1. one kind promotes sponge iron corrosion phosphorus removing method based on efficient in denitrification denitrogenation process, it is characterized in that, sulphur is not only as denitrification electron donor but also as the reinforcer of sponge iron corrosion dephosphorization, add in sewage or reuse water by sponge iron and sulphur mixing, sulphur rapidly and efficiently promotes that sponge iron corrodes dephosphorization.
2. according to the method for claim 1, it is characterized in that, sponge iron and sulphur are mixed and put into reactor, sponge iron corrosion generates FeS and FeOOH material, promotes sponge iron corrosion;
Or sponge iron, sulphur and other water treatment fillers mixed load denitrification filter pool and carry out promotions sponge iron and corrode.
3. according to the method for claim 2, it is characterized in that, in the process of sponge iron corrosion dephosphorization, under sulphur existence condition, sponge iron continues corrosion and generates FeS and FeOOH, and and PO 4 3-reaction generates precipitation and removes.
4., according to the method for claim 3, it is characterized in that, FeS and PO 4 3-reaction changes into the FePO of more indissoluble 4, FeOOH quick adsorption PO 4 3-and form multinuclear di iron (Fe 4(PO 4) 3(OH) 3) precipitation, FePO 4and Fe 4(PO 4) 3(OH) 3constantly be deposited to reactor bottom, thus by the PO in water 4 3-remove.
CN201511018000.5A 2015-12-29 2015-12-29 Method for removing phosphorous based on high-efficiency promotion of spongy iron corrosion in process of nitrogen removal by denitrification Pending CN105399202A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201511018000.5A CN105399202A (en) 2015-12-29 2015-12-29 Method for removing phosphorous based on high-efficiency promotion of spongy iron corrosion in process of nitrogen removal by denitrification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201511018000.5A CN105399202A (en) 2015-12-29 2015-12-29 Method for removing phosphorous based on high-efficiency promotion of spongy iron corrosion in process of nitrogen removal by denitrification

Publications (1)

Publication Number Publication Date
CN105399202A true CN105399202A (en) 2016-03-16

Family

ID=55465015

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201511018000.5A Pending CN105399202A (en) 2015-12-29 2015-12-29 Method for removing phosphorous based on high-efficiency promotion of spongy iron corrosion in process of nitrogen removal by denitrification

Country Status (1)

Country Link
CN (1) CN105399202A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105836881A (en) * 2016-06-04 2016-08-10 北京工业大学 Reclaimed water deep denitrification and dephosphorization method based on low C/N ratio
CN106186301A (en) * 2016-07-02 2016-12-07 北京工业大学 A kind of preparation method and applications of compounded mix based on recycled water advanced nitrogen dephosphorization
CN106495413A (en) * 2016-12-14 2017-03-15 江南大学 A kind of sewage-treatment plant and its application
CN106517649A (en) * 2016-11-14 2017-03-22 江南大学 Sewage deep dentrification and dephosphorization method
CN107176702A (en) * 2017-07-31 2017-09-19 南京大学 A kind of sewage water treatment method for strengthening sulphur autotrophic denitrification process synchronous denitrification dephosphorizing
CN108467171A (en) * 2018-05-11 2018-08-31 广东溢达纺织有限公司 A method of it is recycled containing ferrous sludge
CN109231451A (en) * 2018-10-29 2019-01-18 东华大学 A kind of depth denitrification filter pool strengthened based on electron shuttle body and internal ferrikinetics
CN111252887A (en) * 2020-02-14 2020-06-09 北京化工大学 Biofilm reactor for treating wastewater with low carbon-nitrogen ratio and refractory organic matters
CN112591883A (en) * 2020-11-24 2021-04-02 河南永泽环境科技有限公司 Composite filler for deep nitrogen and phosphorus removal of tail water and preparation method thereof
CN114057283A (en) * 2021-09-10 2022-02-18 南京华创环境技术研究院有限公司 Light nitrogen and phosphorus removal filler utilizing pyrite to modify waste polyurethane and preparation method thereof
CN115353198A (en) * 2022-07-21 2022-11-18 北京工业大学 Synchronous nitrogen and phosphorus removal method based on sponge iron-sodium thiosulfate autotrophic denitrification biological filter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6093328A (en) * 1994-12-08 2000-07-25 Santina; Peter F. Method for removing toxic substances in water
CN1562802A (en) * 2004-03-26 2005-01-12 重庆大学 Vertical deflector combined Filtration type dephosphorization and nitrogen rejection facility
CN102642981A (en) * 2012-04-17 2012-08-22 清华大学 Denitrification dephosphorization device
CN103183402A (en) * 2013-04-21 2013-07-03 北京工业大学 Reinforced nitrogen and phosphorus removal method suitable for reclaimed water with low carbon nitrogen ratio

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6093328A (en) * 1994-12-08 2000-07-25 Santina; Peter F. Method for removing toxic substances in water
CN1562802A (en) * 2004-03-26 2005-01-12 重庆大学 Vertical deflector combined Filtration type dephosphorization and nitrogen rejection facility
CN102642981A (en) * 2012-04-17 2012-08-22 清华大学 Denitrification dephosphorization device
CN103183402A (en) * 2013-04-21 2013-07-03 北京工业大学 Reinforced nitrogen and phosphorus removal method suitable for reclaimed water with low carbon nitrogen ratio

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105836881B (en) * 2016-06-04 2018-07-13 北京工业大学 A method of based on low C/N than recycled water advanced nitrogen dephosphorization
CN105836881A (en) * 2016-06-04 2016-08-10 北京工业大学 Reclaimed water deep denitrification and dephosphorization method based on low C/N ratio
CN106186301A (en) * 2016-07-02 2016-12-07 北京工业大学 A kind of preparation method and applications of compounded mix based on recycled water advanced nitrogen dephosphorization
CN106186301B (en) * 2016-07-02 2018-06-01 北京工业大学 A kind of preparation method and applications of the compounded mix based on recycled water advanced nitrogen dephosphorization
CN106517649A (en) * 2016-11-14 2017-03-22 江南大学 Sewage deep dentrification and dephosphorization method
CN106517649B (en) * 2016-11-14 2020-01-21 江南大学 Method for deep nitrogen and phosphorus removal of sewage
CN106495413A (en) * 2016-12-14 2017-03-15 江南大学 A kind of sewage-treatment plant and its application
CN107176702A (en) * 2017-07-31 2017-09-19 南京大学 A kind of sewage water treatment method for strengthening sulphur autotrophic denitrification process synchronous denitrification dephosphorizing
CN108467171B (en) * 2018-05-11 2020-07-28 广东溢达纺织有限公司 Method for recycling sludge containing ferrous iron
CN108467171A (en) * 2018-05-11 2018-08-31 广东溢达纺织有限公司 A method of it is recycled containing ferrous sludge
CN109231451A (en) * 2018-10-29 2019-01-18 东华大学 A kind of depth denitrification filter pool strengthened based on electron shuttle body and internal ferrikinetics
CN111252887A (en) * 2020-02-14 2020-06-09 北京化工大学 Biofilm reactor for treating wastewater with low carbon-nitrogen ratio and refractory organic matters
CN112591883A (en) * 2020-11-24 2021-04-02 河南永泽环境科技有限公司 Composite filler for deep nitrogen and phosphorus removal of tail water and preparation method thereof
CN114057283A (en) * 2021-09-10 2022-02-18 南京华创环境技术研究院有限公司 Light nitrogen and phosphorus removal filler utilizing pyrite to modify waste polyurethane and preparation method thereof
CN115353198A (en) * 2022-07-21 2022-11-18 北京工业大学 Synchronous nitrogen and phosphorus removal method based on sponge iron-sodium thiosulfate autotrophic denitrification biological filter
CN115353198B (en) * 2022-07-21 2023-09-19 北京工业大学 Synchronous denitrification and dephosphorization method based on sponge iron-sodium thiosulfate autotrophic denitrification biological filter

Similar Documents

Publication Publication Date Title
CN105399202A (en) Method for removing phosphorous based on high-efficiency promotion of spongy iron corrosion in process of nitrogen removal by denitrification
CN109052641B (en) Coupling filler autotrophic denitrification biological filter and application
CN105836881A (en) Reclaimed water deep denitrification and dephosphorization method based on low C/N ratio
CN103183402B (en) Reinforced nitrogen and phosphorus removal method suitable for reclaimed water with low carbon nitrogen ratio
CN102030438B (en) Treatment method of ammonia nitrogen wastewater
CN101791534B (en) Phosphorus-removing adsorbent and preparation method thereof
CN101781054A (en) Method for utilizing three-dimensional electrode coagulation combination to carry out advanced treatment on coking wastewater
CN105384201A (en) Treatment agent for treating heavy metal sewage, and preparation method and application thereof
CN102151548B (en) Adsorption material for treating phosphorus wastewater and use thereof
CN109809519A (en) A kind of Organic-inorganic composite sewage-treating agent and preparation method thereof
CN111763103A (en) Process for preparing calcium magnesium ammonium phosphate from desulfurization wastewater, landfill leachate and phosphorus-containing wastewater
CN102976532A (en) Method for treating fluorine-containing polymetallic acidic smelting wastewater by internal electrolysis and coprecipitation of ferric-carbon
CN102527330A (en) Preparation method of modified clinoptilolite ion exchanger
CN201634549U (en) Three-dimensional electrode biofilm reactor of reproducing nitric oxide complex absorbing agents
CN105923757A (en) Method for phosphorus removal and denitrification through iron elementary substance cooperating with sulfur autotrophic denitrification
CN105502765A (en) System and method for treating desulfurization wastewater and recycling resources cooperatively
CN114212881B (en) Process and device for strengthening synchronous phosphorus recovery of short-cut denitrification anaerobic ammonia oxidation denitrification
CN102976488B (en) Method for zero-valent nano-iron-reinforced biological removal of nitrogen and phosphorus
CN107324606B (en) Sewage treatment system and method for recycling iron-rich excess sludge dephosphorization membrane bioreactor
CN103693785A (en) Method for removing exceeding sulfides from lead-zinc beneficiation wastewater
CN206915891U (en) Remove the processing system of phosphorus and nickel in chemical nickle-plating wastewater
CN111617732B (en) Method for in-situ preparation of heavy metal adsorbent based on high-iron-manganese acidic pit wastewater and application
CN112062343A (en) MAP method-based harmless recycling treatment method for phosphogypsum yard leachate
CN108314167A (en) One kind is except compound alkali of spent acid and preparation method thereof
CN103755004A (en) Strong acid resin composite material of load zero-valence composite metal, preparation method and application thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20160316