CN102826723A - Treatment method for urban sanitary sewage - Google Patents
Treatment method for urban sanitary sewage Download PDFInfo
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- CN102826723A CN102826723A CN2012103493694A CN201210349369A CN102826723A CN 102826723 A CN102826723 A CN 102826723A CN 2012103493694 A CN2012103493694 A CN 2012103493694A CN 201210349369 A CN201210349369 A CN 201210349369A CN 102826723 A CN102826723 A CN 102826723A
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- dephosphorization
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Abstract
The invention discloses a treatment method for urban sanitary sewage. The invention is characterized by comprising the following steps of: (1) anaerobic treatment: enabling sewage to be treated to flow into an anaerobic bioreactor, wherein the bioreactor adopts a biofilm process, and the organic matters in the sewage are initially decomposed and removed under the function of anaerobe; (2) phosphorous removal treatment: enabling the sewage to flow out of an SBR (sequencing batch reactor) pond to enter into a phosphorous removal pond, and putting a phosphorus removal agent into the phosphorous removal pond, so that flocculating constituent and the sediment can be formed by the phosphorus removal agent and organic phosphorus compounds in the sewage; (3) aerobic treatment: enabling the sewage to flow out of the phosphorous removal pond to enter into an aerobiotic bioreactor, wherein the bioreactor adopts the biofilm process, the microbial metabolic rate can be accelerated due to the biofilm process, and organic matters in the sewage can be further decompressed; and (4) sediment drainage stage: discharging the sewage into a sedimentation tank through the aerobic treatment, wherein the sedimentation time is 1.5-2h, the surface load is 1.0-2.0m<3>/m<2>.h, and the liquid supernatant can accord with the national primary emission standard after the sedimentation is stopped.
Description
Technical field
The present invention relates to a kind of sewage water treatment method, relate to a kind of treatment process of urban life class sewage especially.
Background technology
Body eutrophication has become more and more serious global environmental problem, and it mainly is because the excess discharging of nutritive substances such as nitrogen, phosphorus in environment causes.The one-level A standard code ammonia nitrogen of China's current standards " urban wastewater treatment firm pollutant emission standard " (GB 18918-2002) should not surpass 5mg/L; Total nitrogen should not surpass 15mg/L; Total phosphorus should not surpass 0.5mg/L; The major river valley that water pollution is administered requires newly-built town sewage treatment facility in its basin perimeter all should carry out the one-level A standard of aforesaid standards.Therefore, existing is that the two stage biological treatment process of main purpose no longer is applicable to the urban wastewater treatment firm of planning to build in a large number in the basin to remove organism, presses for suitable sewage denitrification and dephosphorization technology on the market.
Existing processes mainly contains primary reinforcement treatment technology and biological treatment etc., and denitrogenation dephosphorizing is qualified discharge simultaneously, and power consumption is high, occupation of land is big.Therefore, the deficiency of existing samll cities and towns sewage disposal technology, a large amount of dischargings of nitrogen phosphorus are to cause one of serious direct inducement of domestic present water eutrophication.
Summary of the invention
Treatment process to urban life class sewage of the present invention has following step:
1, anaerobic treatment, treatment sewage flows into anaerobic biological reactor, and this reactor drum adopts biomembrance process, and the organism in the sewage is tentatively decomposed under the anerobes effect and is removed, and the time that sewage stops in anaerobic reactor is 5～6 hours;
2, dephosphorization is handled, and sewage flows out entering dephosphorization pond, back in the SBR pond, in the dephosphorization pond, throw in dephosphorization agent, and the whisking appliance in the dephosphorization pond stirs at a slow speed then, and rotating speed is 20～30rmin
-1, the organo phosphorous compounds in dephosphorization agent and the sewage forms flocs unit and forms deposition, and sewage is 0.5～1.5 hour in the dephosphorization pond residence time, and chemical sludge is discharged through the chemical sludge mud discharging mouth, and the consumption of dephosphorization agent is the 1kg dephosphorization agent: 1 ton of sewage;
3, aerobic treatment: sewage flows out the back and gets into aerobe reactor from the dephosphorization pond; This reactor drum adopts biomembrance process; And, further decompose the organism in the sewage through biomembrance process raising microbial metabolism speed, the time that sewage stops in aerobic reactor is 8～10 hours;
4, the sedimentation and drawing stage: sewage gets into settling tank through after the aerobic treatment, and the ST is 1.5～2 hours, and surface load is 1.0～2.0m
3/ m
2H, deposition finishes the back supernatant can meet national I level emission standard.
Wherein, The biofilm carrier that uses in the bio-reactor described in the step 1 and 3 can adopt the carrier of the residue preparation that utilizes the cane sugar manufacture generation; The concrete preparation method of this carrier is following: the residue that cane sugar manufacture is produced cleans; Subsequently residue being placed massfraction is 18%～20% sodium hydroxide solution, soaks 5～7h; Residue after the alkalinisation treatment is carried out carrying out crosslinking reaction with excessive Di Cumyl Peroxide 99 after the processed; Solid product and Trimethylamine 99 alcoholic solution that crosslinking reaction is generated carry out quaternary ammonium reaction, obtain solid product; With promptly becoming carrier of the present invention after solid product cleaning and the drying.
Wherein, Dephosphorization agent described in the step 2 prepares according to following method; With the bauxitic clay is raw material, and 80 purpose bauxitic clays are placed 10% potassium permanganate solution, and the ratio of bauxitic clay and potassium permanganate is the 1kg bauxitic clay: the 1000ml potassium permanganate solution; Bauxitic clay abundant mixing in potassium permanganate solution forms suspension-s; In suspension-s, add SEPIGEL 305 and water glass then and stir and get final product, the amount of adding SEPIGEL 305 is the 10g SEPIGEL 305: 1000ml suspension-s, the amount of adding water glass is the 5g water glass: 1000ml suspension-s.
Treatment process of the present invention has been used with the biofilm carrier of sugarcane residue as feedstock production, has reduced processing cost, and has improved the processing efficiency of bio-reactor through biofilm carrier.Use in addition with the dephosphorization agent of bauxitic clay, reduced processing cost, also have good phosphor-removing effect simultaneously as basic material.The nitrogen phosphorus in the sewage can be effectively removed in processing through these four steps, realizes the qualified discharge of sewage.
Embodiment
Adopt potassium dichromate process to measure COD; Adopt Potassium Persulphate oxidation---determined by ultraviolet spectrophotometry total nitrogen; Adopt nessler reagent spectrphotometric method for measuring ammonia nitrogen, adopt molybdenum-antimony anti-spectrophotometric method to measure total phosphorus.
Embodiment 1
The COD of treatment sewage is 280mg/L, and total nitrogen is 144mg/L, and ammonia nitrogen is 45mg/L, and total phosphorus is 21mg/L.
Sewage is done following the processing
1, anaerobic treatment; Treatment sewage flows into anaerobic biological reactor; This reactor drum adopts biomembrance process, and biofilm carrier adopts the carrier that utilizes the residue preparation that cane sugar manufacture produces, the preparation method of this carrier literary composition that sees before; Organism in the sewage is decomposed and removal by preliminary under the anerobes effect, and the time that sewage stops in anaerobic reactor is 5 hours;
2, dephosphorization is handled, and sewage flows out entering dephosphorization pond, back in the SBR pond, in the dephosphorization pond, throw in dephosphorization agent; It is the dephosphorization agent on basis that dephosphorization agent adopts with the bauxitic clay; The preparation method of this dephosphorization agent literary composition that sees before, the whisking appliance in the dephosphorization pond stirs at a slow speed then, and rotating speed is 25rmin
-1, the organo phosphorous compounds in dephosphorization agent and the sewage forms flocs unit and forms deposition, and sewage is 1 hour in the dephosphorization pond residence time, and chemical sludge is discharged through the chemical sludge mud discharging mouth, and the consumption of dephosphorization agent is the 1kg dephosphorization agent: 1 ton of sewage;
3, Aerobic Process for Treatment: sewage flows out the back and gets into aerobe reactor from the dephosphorization pond; This reactor adopts biomembrance process; Biofilm carrier adopts the carrier of the residue preparation that utilizes the cane sugar manufacture generation; The preparation method of this carrier literary composition that sees before; And by biomembrance process raising microbial metabolism speed; Further decompose the organic matter in the sewage, the time that sewage stops in aerobic reactor is 9 hours;
4, the sedimentation and drawing stage: sewage gets into settling tank through after the aerobic treatment, and the ST is 2 hours, and surface load is 1.5m
3/ m
2H.
Each item index is following in the supernatant of deposition end back: COD is 15mg/L, and total nitrogen is 15mg/L, and ammonia nitrogen is 3.4mg/L, and total phosphorus is 1.3mg/L.
Embodiment 2
The COD of treatment sewage is 332mg/L, and total nitrogen is 176mg/L, and ammonia nitrogen is 59mg/L, and total phosphorus is 19mg/L.
Sewage is done following the processing
1, anaerobic treatment; Treatment sewage flows into anaerobic biological reactor; This reactor drum adopts biomembrance process, and biofilm carrier adopts the carrier that utilizes the residue preparation that cane sugar manufacture produces, the preparation method of this carrier literary composition that sees before; Organism in the sewage is decomposed and removal by preliminary under the anerobes effect, and the time that sewage stops in anaerobic reactor is 6 hours;
2, dephosphorization is handled, and sewage flows out entering dephosphorization pond, back in the SBR pond, in the dephosphorization pond, throw in dephosphorization agent; It is the dephosphorization agent on basis that dephosphorization agent adopts with the bauxitic clay; The preparation method of this dephosphorization agent literary composition that sees before, the whisking appliance in the dephosphorization pond stirs at a slow speed then, and rotating speed is 25rmin
-1, the organo phosphorous compounds in dephosphorization agent and the sewage forms flocs unit and forms deposition, and sewage is 1.5 hours in the dephosphorization pond residence time, and chemical sludge is discharged through the chemical sludge mud discharging mouth, and the consumption of dephosphorization agent is the 1kg dephosphorization agent: 1 ton of sewage;
3, Aerobic Process for Treatment: sewage flows out the back and gets into aerobe reactor from the dephosphorization pond; This reactor adopts biomembrance process; Biofilm carrier adopts the carrier of the residue preparation that utilizes the cane sugar manufacture generation; The preparation method of this carrier literary composition that sees before; And by biomembrance process raising microbial metabolism speed; Further decompose the organic matter in the sewage, the time that sewage stops in aerobic reactor is 10 hours;
5, the sedimentation and drawing stage: sewage gets into settling tank through after the aerobic treatment, and the ST is 2 hours, and surface load is 1.5m
3/ m
2H.
Each item index is following in the supernatant of deposition end back: COD is 17mg/L, and total nitrogen is 14mg/L, and ammonia nitrogen is 3.2mg/L, and total phosphorus is 1.1mg/L.
Embodiment 3
The COD of treatment sewage is 226mg/L, and total nitrogen is 123mg/L, and ammonia nitrogen is 35mg/L, and total phosphorus is 22mg/L.
Sewage is done following the processing
1, anaerobic treatment; Treatment sewage flows into anaerobic biological reactor; This reactor drum adopts biomembrance process, and biofilm carrier adopts the carrier that utilizes the residue preparation that cane sugar manufacture produces, the preparation method of this carrier literary composition that sees before; Organism in the sewage is decomposed and removal by preliminary under the anerobes effect, and the time that sewage stops in anaerobic reactor is 5 hours;
2, dephosphorization is handled, and sewage flows out entering dephosphorization pond, back in the SBR pond, in the dephosphorization pond, throw in dephosphorization agent; It is the dephosphorization agent on basis that dephosphorization agent adopts with the bauxitic clay; The preparation method of this dephosphorization agent literary composition that sees before, the whisking appliance in the dephosphorization pond stirs at a slow speed then, and rotating speed is 30rmin
-1, the organo phosphorous compounds in dephosphorization agent and the sewage forms flocs unit and forms deposition, and sewage is 1 hour in the dephosphorization pond residence time, and chemical sludge is discharged through the chemical sludge mud discharging mouth, and the consumption of dephosphorization agent is the 1kg dephosphorization agent: 1 ton of sewage;
3, Aerobic Process for Treatment: sewage flows out the back and gets into aerobe reactor from the dephosphorization pond; This reactor adopts biomembrance process; Biofilm carrier adopts the carrier of the residue preparation that utilizes the cane sugar manufacture generation; The preparation method of this carrier literary composition that sees before; And by biomembrance process raising microbial metabolism speed; Further decompose the organic matter in the sewage, the time that sewage stops in aerobic reactor is 8 hours;
6, the sedimentation and drawing stage: sewage gets into settling tank through after the aerobic treatment, and the ST is 2 hours, and surface load is 1.5m
3/ m
2H.
Each item index is following in the supernatant of deposition end back: COD is 21mg/L, and total nitrogen is 17mg/L, and ammonia nitrogen is 2mg/L, and total phosphorus is 1.4mg/L.
Simultaneous test
In order to verify the effect of dephosphorization agent of the present invention, dephosphorization agent of the present invention and the dephosphorization agent that can buy are in the market compared.Participate in correlated dephosphorization agent the technical grade dephosphorization agent (following abbreviation dephosphorization agent A) available from the grand Science and Technology Ltd. of Shenzhen mayor is arranged; Padsorbent series phosphorus efficiency sorbent material (following abbreviation dephosphorization agent B) available from Zhangjagang City Lay magpie chemical industry ltd; Available from the dephosphorization agent (following abbreviation dephosphorization agent C) of changzhou city rivers and lakes chemical industry ltd, the project of comparison is the clearance of phosphorus.
TP is: get the 100ml total phosphorous and place in the beaker at the former water of 20～50mg/L, in beaker, drop into the 0.5g dephosphorization agent, stir the total phosphorous of measuring supernatant after 30 minutes.The pH value of former water is adjusted to 5,7 and 11 respectively, with the phosphor-removing effect of test dephosphorization agent under different pH value environment.
Test-results is as shown in the table.Can find out; The phosphor-removing effect of dephosphorization agent of the present invention is suitable with the phosphor-removing effect of the dephosphorization agent of being sold in the market; But consider that dephosphorization agent of the present invention is to be the main body with bauxitic clay and potassium permanganate; Add a small amount of SEPIGEL 305 and water glass and form, with low cost, therefore dephosphorization agent of the present invention a kind of good dephosphorization agent of can yet be regarded as.
| The dephosphorization agent type | Total tp removal rate during pH5 | Total tp removal rate during pH7 | Total tp removal rate during pH11 |
| Dephosphorization agent of the present invention | 98.3％ | 95.1％ | 92.4％ |
| Dephosphorization agent A | 95.2％ | 96.4％ | 93.6％ |
| Dephosphorization agent B | 97.5％ | 99.0％ | 96.4％ |
| Dephosphorization agent C | 93.1％ | 94.2％ | 92.4％ |
Those skilled in the art can make replacement or modification to content of the present invention according to content disclosed by the invention and the art technology of being grasped; But these replacements or modification should not be regarded as breaking away from the present invention's design, and these replacements or modification are all in the interest field that the present invention requires to protect.
Claims (3)
1. treatment process to urban life class sewage is characterized in that this method comprises following step:
(1) anaerobic treatment, treatment sewage flows into anaerobic biological reactor, and this reactor drum adopts biomembrance process, and the organism in the sewage is tentatively decomposed under the anerobes effect and is removed, and the time that sewage stops in anaerobic reactor is 5～6 hours;
(2) dephosphorization is handled, and sewage flows out entering dephosphorization pond, back in the SBR pond, in the dephosphorization pond, throw in dephosphorization agent, and the whisking appliance in the dephosphorization pond stirs at a slow speed then, and rotating speed is 20～30rmin
-1, the organo phosphorous compounds in dephosphorization agent and the sewage forms flocs unit and forms deposition, and sewage is 0.5～1.5 hour in the dephosphorization pond residence time, and chemical sludge is discharged through the chemical sludge mud discharging mouth, and the consumption of dephosphorization agent is the 1kg dephosphorization agent: 1 ton of sewage;
(3) aerobic treatment: sewage flows out the back and gets into aerobe reactor from the dephosphorization pond; This reactor drum adopts biomembrance process; And, further decompose the organism in the sewage through biomembrance process raising microbial metabolism speed, the time that sewage stops in aerobic reactor is 8～10 hours;
(4) the sedimentation and drawing stage: sewage gets into settling tank through after the aerobic treatment, and the ST is 1.5～2 hours, and surface load is 1.0～2.0m
3/ m
2H, deposition finishes the back supernatant can meet national I level emission standard.
2. the treatment process described in the claim 1 to urban life class sewage; It is characterized in that the biofilm carrier that uses in the bio-reactor described in the step (1) and (3) wherein can adopt the carrier that utilizes the residue preparation that cane sugar manufacture produces; The concrete preparation method of this carrier is following: the residue that cane sugar manufacture is produced cleans; Subsequently residue being placed massfraction is 18%～20% sodium hydroxide solution, soaks 5～7h; Residue after the alkalinisation treatment is carried out carrying out crosslinking reaction with excessive Di Cumyl Peroxide 99 after the processed; Solid product and Trimethylamine 99 alcoholic solution that crosslinking reaction is generated carry out quaternary ammonium reaction, obtain solid product; With promptly becoming carrier of the present invention after solid product cleaning and the drying.
3. the treatment process described in the claim 1 to urban life class sewage; It is characterized in that wherein the dephosphorization agent described in the step (2) prepares according to following method; With the bauxitic clay is raw material, and 80 purpose bauxitic clays are placed 10% potassium permanganate solution, and the ratio of bauxitic clay and potassium permanganate is the 1kg bauxitic clay: the 1000ml potassium permanganate solution; Bauxitic clay abundant mixing in potassium permanganate solution forms suspension-s; In suspension-s, add SEPIGEL 305 and water glass then and stir and get final product, the amount of adding SEPIGEL 305 is the 10g SEPIGEL 305: 1000ml suspension-s, the amount of adding water glass is the 5g water glass: 1000ml suspension-s.
Priority Applications (1)
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|---|---|---|---|
| CN201210349369.4A CN102826723B (en) | 2012-09-20 | 2012-09-20 | Treatment method for urban sanitary sewage |
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|---|---|---|---|
| CN201210349369.4A CN102826723B (en) | 2012-09-20 | 2012-09-20 | Treatment method for urban sanitary sewage |
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| CN102826723B CN102826723B (en) | 2014-01-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502912A (en) * | 2018-12-20 | 2019-03-22 | 中石化川气东送天然气管道有限公司 | A kind of highly effective dephosphorizing denitrification miniaturization membrane process domestic sewage treating apparatus |
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2012
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Patent Citations (6)
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| WO2008115444A2 (en) * | 2007-03-16 | 2008-09-25 | Shaw Environmental & Infrastructure, Inc. | High performance, energy efficient system and method for wastewater treatment with resource recovery and reduced residual solids generation |
| CN101434445A (en) * | 2008-12-19 | 2009-05-20 | 天津大学 | Processing system and operation method for phosphor-containing organic wastewater |
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| CN101792236A (en) * | 2010-03-29 | 2010-08-04 | 重庆大学 | Sewage treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109502912A (en) * | 2018-12-20 | 2019-03-22 | 中石化川气东送天然气管道有限公司 | A kind of highly effective dephosphorizing denitrification miniaturization membrane process domestic sewage treating apparatus |
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Application publication date: 20121219 Assignee: ATK Holding Group Co., Ltd. Assignor: Jiangsu ATK Environment Engineering Co., Ltd. Contract record no.: 2015320000264 Denomination of invention: Treatment method for urban sanitary sewage Granted publication date: 20140122 License type: Exclusive License Record date: 20150420 |
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Effective date of registration: 20160309 Address after: 214214 Jiangsu province Yixing gaochengzhen Foreign Investment Industrial Park Yi Road No. 68 Patentee after: Jiangsu ATK Environment Engineering Co., Ltd. Patentee after: ATK HOLDINGS GROUP CO., LTD. Address before: 214214 Jiangsu province Yixing gaochengzhen Foreign Investment Industrial Park Yi Road No. 68 Patentee before: Jiangsu ATK Environment Engineering Co., Ltd. |
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Inventor after: Zhou Namin Inventor after: Wu Yuanwen Inventor after: Lv Youji Inventor before: Zhou Yaqiang Inventor before: Wu Yuanwen Inventor before: Lv Youji |
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