CN105776758A - Improved SBR wastewater treatment process for obtaining standard IV-class surface water - Google Patents

Improved SBR wastewater treatment process for obtaining standard IV-class surface water Download PDF

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Publication number
CN105776758A
CN105776758A CN201610245878.0A CN201610245878A CN105776758A CN 105776758 A CN105776758 A CN 105776758A CN 201610245878 A CN201610245878 A CN 201610245878A CN 105776758 A CN105776758 A CN 105776758A
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China
Prior art keywords
time
aeration
water
sbr
treatment process
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CN201610245878.0A
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CN105776758B (en
Inventor
张静
张辉
胡洁
侯红勋
朱甲华
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Cecep Guozhen Environmental Protection Technology Co.,Ltd.
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Anhui Guoshen Environment Protection And Energy Saving Science And Technology Co
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • 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
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1263—Sequencing batch reactors [SBR]
    • 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

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Activated Sludge Processes (AREA)

Abstract

The invention discloses an improved SBR wastewater treatment process for obtaining standard IV-class surface water. The process includes the following steps that wastewater is pretreated to remove SS in the wastewater; pretreated outlet water enters an SBR tank, 60 min of stirring, 60-80 min of first-time aeration, carbon source addition, 30 min of stirring, 10 min of second-time aeration, 40 min of precipitation and 60 min of drainage are carried out in sequence, and then a next period of treatment is carried out; supernatant liquid drained out of the SBR tank enters a coagulation reaction tank for chemical phosphorus removal; outlet water from the coagulation reaction tank enters a denitrification filter tank to further remove residual nitrate nitrogen; outlet water from the denitrification filter tank enters a disinfection tank, and after being disinfected, the water is drained. The steps of inlet water stirring, first-time aeration, carbon source addition and stirring, second-time aeration, precipitation and drainage are carried out in sequence in the SBR reaction tank, advanced nitrogen removal is carried out in combination with the post-denitrification filter tank, an advanced chemical phosphorus removal process is adopted, and thus a good nitrogen and phosphorus removal effect is achieved.

Description

A kind of Modified SBR sewage treatment process of surface water IV class up to standard
Technical field
The invention belongs to sewage treatment area, the Modified SBR sewage treatment process of a kind of surface water IV class up to standard.
Background technology
Along with China's water pollution problems highlights day by day, the raising of urban wastewater treatment discharge standard has been trend of the times.From The requirement that current quality of water environment improves is seen, the water outlet after many municipal sewage plants process often enters urban river, Become the water body in river.The existing sewage disposal plant effluent of China, the many references of discharge standard " GB 18918-2002 town sewage Treatment plant's pollutant emission standard " in one-level A.But for one-level A standard, its water quality just corresponds to bad V class of surface water Water.This water quality is discharged into and several causes water body the most not repaired without in the water body environment of self-purification capacity, suffers dirt on the contrary , then there is the phenomenon of ' controlling dirtier and dirtier ' in dye.Increasingly sharpening of water pollution, an urgent demand effluent of municipal sewage plant reaches Earth's surface class IV class standard.30mg/l will be reduced to by CODCr by the 50mg/L of one-level A；BOD5 is reduced by the 10mg/L of one-level A To 6mg/L；Ammonia nitrogen is by the 5mg/L(8mg/L of one-level A) it is reduced to 1.5mg/L(2.5mg/L)；Total phosphorus is by the 0.5mg/L of one-level A It is reduced to 0.3mg/L；Total nitrogen is reduced to 5mg/L(10mg/L by the 15mg/L of one-level A).At present, the ground such as Beijing, Kunming, Hefei Launching practice the most successively, the requirement to sewage effluents CODCr, ammonia nitrogen, total nitrogen, total phosphorus etc. is higher.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes the Modified SBR sewage treatment process of a kind of surface water up to standard IV class.
The purpose of the present invention can be achieved through the following technical solutions:
The Modified SBR sewage treatment process of a kind of surface water IV class up to standard, it is characterised in that described technique specifically includes following step Rapid:
(1) sewage SS in water is removed in pretreatment；
(2) after pretreatment, water outlet enters SBR pond, is provided with blender and is stirred in SBR pond, and power of agitator is 4-10W/m3, profit Carry out anti-nitration reaction with the nitrate nitrogen of residual in the cycle upper to SBR of the carbon source in former water, carry out biological phosphate-eliminating simultaneously；Stirring Carry out aeration for the first time after 60min, to the further carbonization of Organic substance of residual in water inlet, the ammonia nitrogen in water inlet is carried out nitre simultaneously Change reaction and be transformed into nitrate nitrogen；Aeration terminates add carbon source and stir 30min for the first time, and power of agitator is 4-10W/m3, carry out Aeration for the second time, is further removed residual organic matter in SBR pond；Aeration terminates to staticly settle 40min for the second time, Gu Liquid separates；Draining 60min, discharges supernatant, subsequently into next cycle；
(3) the supernatant entrance coagulation reaction tank that SBR pond is discharged carries out chemical dephosphorization；
(4) coagulation reaction tank water outlet enters denitrification filter pool and removes the nitrate nitrogen of residual further；
(5) denitrification filter pool water outlet enters after sterilization pool carries out disinfection and discharges.
Described first time aeration time is 60-80min；Described second time aeration time is 10min；Aeration and for the first time The DO value of secondary aeration is held in 2mg/L-4mg/L.
Described pre-treatment step is that sewage carries out preliminary sedimentation through setting pot or sedimentation tank.
Described coagulation reaction tank adds chemical dephosphorization medicament, and it is iron salt or aluminium salt that described chemical dephosphorization adds medicament.
Beneficial effects of the present invention: sequentially pass through into water stirring, for the first time aeration in sbr reactor pond of the present invention, add carbon Source stirring, for the second time aeration, precipitation and drain step, in conjunction with rear-mounted denitrification filter tank advanced nitrogen, and the chemistry of the degree of depth removes Phosphorus technique, has good Nitrogen/Phosphorus Removal, it can be ensured that the stable realization of class IV class water Effluent criteria.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further details.
Such as Fig. 1.
The Modified SBR sewage treatment process of a kind of surface water IV class up to standard, comprises the following steps:
1, the sewage that Sewage Plant produces removes the SS in water through the pretreatment of setting pot or sedimentation tank, it is ensured that subsequent biochemical is anti- That answers stablizes.
2, after pretreatment, water outlet enters SBR pond, is provided with blender and is stirred in SBR pond, and power of agitator is according to 4-10W/ m3Chi Rong considers, takes high level during mixed liquid concentration height or during Chi Shen great, and when mixed liquid concentration is low or pond takes low value in deep hour, Utilize the nitrate nitrogen of residual in the cycle upper to SBR of the carbon source in former water to carry out anti-nitration reaction, carry out biological phosphate-eliminating simultaneously；Stir Carrying out aeration for the first time after mixing 60min, aeration time is 60-80min for the first time, to the further carbon of Organic substance of residual in water inlet Change, the ammonia nitrogen in water inlet is carried out nitration reaction simultaneously and be transformed into nitrate nitrogen；Aeration terminates add carbon source and stir for the first time 30min, ibid, the nitrate nitrogen producing aeration phase carries out anti-nitration reaction to power of agitator；Then second time aeration is carried out, the Secondary aeration time is 10min, is further removed residual organic matter in SBR pond；For the second time aeration terminate to stand heavy Shallow lake 40min, solid-liquid separation；Draining 60min, discharges supernatant, subsequently into next cycle.Aeration and second time for the first time The DO value of aeration is held in 2mg/L-4mg/L.
3, the supernatant that SBR pond is discharged enters coagulation reaction tank, adds chemical dephosphorization medicament, carries out chemical dephosphorization, chemistry It is iron salt or aluminium salt that dephosphorization adds medicament, and added amount of chemical determines according to sewage quantity and pollutant load.
4, coagulation reaction tank water outlet enters denitrification filter pool and removes the nitrate nitrogen of residual further, to reach to remove total nitrogen Purpose, and carry out the metal phosphorizing compound flco that coagulation reaction tank produces filtering removal total phosphorus.
5, denitrification filter pool water outlet enters after sterilization pool carries out disinfection and discharges.
Above content is only to present configuration example and explanation, affiliated those skilled in the art couple Described specific embodiment makes various amendment or supplements or use similar mode to substitute, without departing from invention Structure or surmount scope defined in the claims, all should belong to protection scope of the present invention.

Claims (4)

1. the Modified SBR sewage treatment process of surface water IV class up to standard, it is characterised in that described technique specifically includes following Step:
(1) sewage removes the ss suspended solid in water through pretreatment precipitation；
(2) after pretreatment, water outlet enters SBR pond, is provided with blender and is stirred in SBR pond, and power of agitator is 4-10W/m3, utilize In carbon source in the former water cycle upper to SBR, the nitrate nitrogen of residual carries out anti-nitration reaction, carries out biological phosphate-eliminating simultaneously；Stirring Carry out aeration for the first time after 60min, to the further carbonization of Organic substance of residual in water inlet, the ammonia nitrogen in water inlet is carried out nitre simultaneously Change reaction and be transformed into nitrate nitrogen；Aeration terminates add carbon source and stir 30min for the first time, and power of agitator is 4-10W/m3, carry out Aeration for the second time, is further removed residual organic matter in SBR pond；Aeration terminates to staticly settle 40min for the second time, Gu Liquid separates；Draining 60min, discharges supernatant, subsequently into next cycle；
(3) the supernatant entrance coagulation reaction tank that SBR pond is discharged carries out chemical dephosphorization；
(4) coagulation reaction tank water outlet enters denitrification filter pool and removes the nitrate nitrogen of residual further；
(5) denitrification filter pool water outlet enters after sterilization pool carries out disinfection and discharges.
The Modified SBR sewage treatment process of surface water up to standard IV class the most according to claim 1, it is characterised in that described Aeration time is 60-80min for the first time；Described second time aeration time is 10min；Aeration and the DO of second time aeration for the first time Value is held in 2mg/L-4mg/L.
The Modified SBR sewage treatment process of surface water up to standard IV class the most according to claim 1, it is characterised in that described Pre-treatment step is that sewage carries out preliminary sedimentation through setting pot or sedimentation tank.
The Modified SBR sewage treatment process of surface water up to standard IV class the most according to claim 1, it is characterised in that described Coagulation reaction tank adds chemical dephosphorization medicament, and it is iron salt or aluminium salt that described chemical dephosphorization adds medicament.
CN201610245878.0A 2016-04-20 2016-04-20 A kind of Modified SBR sewage treatment process of IV class of surface water up to standard Active CN105776758B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106698868A (en) * 2017-03-30 2017-05-24 石博诚 Municipal waste water treatment sludge decrement intermittent running device and method for intermittently dephosphorizing
CN108275850A (en) * 2018-04-04 2018-07-13 中国人民解放军军事科学院国防工程研究院 A kind of effective integrated sewage-treatment plant
CN109694132A (en) * 2019-02-23 2019-04-30 何江涛 A kind of sewage water treatment method of sequence batch temperature-control pressure-control biomembrane
CN110342744A (en) * 2019-07-22 2019-10-18 姚红樱 A kind of bioremediation of pyridine and its derivatives production waste water
CN111547934A (en) * 2020-04-10 2020-08-18 安徽国祯环保节能科技股份有限公司 SBR sewage treatment system and treatment method thereof
CN115490352A (en) * 2021-06-20 2022-12-20 高峰 Process for improving discharge standard of nitrogen and phosphorus in secondary biochemical effluent of municipal domestic sewage

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Publication number Priority date Publication date Assignee Title
CN201292299Y (en) * 2008-09-12 2009-08-19 王宝臣 Water treatment system with postpositive denitrification process
CN103910432A (en) * 2014-04-22 2014-07-09 东南大学 Energy-saving type nitrogen-phosphor efficient removing method for sequencing batch type domestic wastewater
CN103936151A (en) * 2014-04-10 2014-07-23 北京工业大学 Efficient nitrogen and phosphorus removal device and method for low carbon source municipal sewage
CN105016470A (en) * 2015-08-28 2015-11-04 北京工业大学 Method for realizing advanced nitrogen and phosphorus removal of low C/N and C/P municipal sewage through excess sludge anaerobic fermentation mixture

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CN201292299Y (en) * 2008-09-12 2009-08-19 王宝臣 Water treatment system with postpositive denitrification process
CN103936151A (en) * 2014-04-10 2014-07-23 北京工业大学 Efficient nitrogen and phosphorus removal device and method for low carbon source municipal sewage
CN103910432A (en) * 2014-04-22 2014-07-09 东南大学 Energy-saving type nitrogen-phosphor efficient removing method for sequencing batch type domestic wastewater
CN105016470A (en) * 2015-08-28 2015-11-04 北京工业大学 Method for realizing advanced nitrogen and phosphorus removal of low C/N and C/P municipal sewage through excess sludge anaerobic fermentation mixture

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106698868A (en) * 2017-03-30 2017-05-24 石博诚 Municipal waste water treatment sludge decrement intermittent running device and method for intermittently dephosphorizing
CN108275850A (en) * 2018-04-04 2018-07-13 中国人民解放军军事科学院国防工程研究院 A kind of effective integrated sewage-treatment plant
CN109694132A (en) * 2019-02-23 2019-04-30 何江涛 A kind of sewage water treatment method of sequence batch temperature-control pressure-control biomembrane
CN109694132B (en) * 2019-02-23 2021-12-17 何江涛 Sewage treatment method of sequencing batch temperature and pressure control biological membrane
CN110342744A (en) * 2019-07-22 2019-10-18 姚红樱 A kind of bioremediation of pyridine and its derivatives production waste water
CN111547934A (en) * 2020-04-10 2020-08-18 安徽国祯环保节能科技股份有限公司 SBR sewage treatment system and treatment method thereof
CN111547934B (en) * 2020-04-10 2021-04-30 中节能国祯环保科技股份有限公司 SBR sewage treatment system and treatment method thereof
CN115490352A (en) * 2021-06-20 2022-12-20 高峰 Process for improving discharge standard of nitrogen and phosphorus in secondary biochemical effluent of municipal domestic sewage

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