CN105859033A - Domestic sewage treatment process - Google Patents

Domestic sewage treatment process Download PDF

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Publication number
CN105859033A
CN105859033A CN201610301502.7A CN201610301502A CN105859033A CN 105859033 A CN105859033 A CN 105859033A CN 201610301502 A CN201610301502 A CN 201610301502A CN 105859033 A CN105859033 A CN 105859033A
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CN
China
Prior art keywords
sewage
sewage treatment
tank
pond
oxidation pond
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
CN201610301502.7A
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Chinese (zh)
Inventor
陈岭
苗赛赛
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.)
NANJING HAIYI ENVIRONMENTAL PROTECTION ENGINEERING Co Ltd
Original Assignee
NANJING HAIYI ENVIRONMENTAL PROTECTION ENGINEERING Co Ltd
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 NANJING HAIYI ENVIRONMENTAL PROTECTION ENGINEERING Co Ltd filed Critical NANJING HAIYI ENVIRONMENTAL PROTECTION ENGINEERING Co Ltd
Priority to CN201610301502.7A priority Critical patent/CN105859033A/en
Publication of CN105859033A publication Critical patent/CN105859033A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • 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
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • 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
    • C02F3/30—Aerobic and anaerobic processes

Abstract

The invention provides a domestic sewage treatment process, comprising the following steps: (1), primarily filtering with a grille well; (2), primarily settling with a primary settling tank; (3), chemically oxidizing with a primary oxidation tank; (4), biochemically treating with a secondary oxidation tank; (5), flocculating and settling with a secondary settling tank; (6), filtering with fiber balls; (7), sterilizing in a fresh water tank. Sewage is first chemically oxidized with Fenton's reagent so that refractory organics in the sewage are decomposed, the sewage is then biologically treated in the secondary oxidation tank, organics and heavy metal ions in the biochemically treated sewage are further removed via flocculating, and the swage is finally filtered with the fiber balls and sterilized; sewage treatment efficiency is improved, outgoing water quality reaches the standard for reclaimed water, and outgoing water is directly reclaimable.

Description

Domestic sewage treatment process
Technical field
The invention belongs to water-treatment technology field, be specifically related to one way of life sewage treatment process.
Background technology
The various detergents used in sanitary sewage mainly life and sewage, rubbish, feces etc., mostly be nontoxic inorganic Salt, many containing nitrogen phosphate and sulfur in sanitary sewage, malignant bacteria is many.Containing large amount of organic in sanitary sewage, such as cellulose, shallow lake Powder, saccharide and fat protein etc.；The most often contain pathogen, virus and parasitic ovum；The chloride of inorganic salts, sulfate, Phosphate, bicarbonate and sodium, potassium, calcium, magnesium etc..Total feature is nitrogenous, sulfur-bearing and phosphorous height, and the later stage processes relatively difficult. The processing method of existing sanitary sewage mainly has the most several: 1, unpowered anaerobism project treatment pattern: physical features is smooth to be had necessarily The village of drop, builds buried large-scale purifying biogas generating pit by unified, by full village sanitary sewage by piping network grille well Collection is confluxed methane-generating pit, takes unpowered anaerobism engineering to carry out and is uniformly processed.The shortcoming of this method is: based on anaerobism effect Limitation, for high strength domestic sewage, i.e. COD value between 3000～30000 wastewater treatment efficiency clearly and for Sanitary sewage of the low dense end, COD value efficiency comparison between 100～300 is low, and single treatment mode water outlet is difficult to up to standard.2, fine motion Power aerobic project treatment pattern: in village, the light household industry polluted or sewage of farm take micro power Aerobic Process for Treatment pattern.I.e. Supporting on the basis of unpowered anaerobism project treatment do power aeration facility.The shortcoming of this method is: for rural area or little District's low concentration sewage, the i.e. COD value sewage between 100～300, biochemical is the best, after taking power aeration, water outlet Discharge standard can be reached, but power consumption is bigger.3, Miniature biomass pool tupe: more complicated for physical features, be difficult to unified paving If the village of sewage conduct, joint construction biogas ground, real a lot of families tupe.Agriculture occupies the most scattered, and single household installs fiberglass life Anerobic sowage depurator processes.(shortcoming: country sewage simply serving utilization, and output biogas must be only little, biogas produces Measure and substantive improvement is not played for the life in the countryside energy, and maintenance workload is big.4, wetland variation and plant absorption Tupe: combining the sanitary sewage after above a certain mode processes, rural area with good conditionsi supports the use wetland variation or plants Thing absorption processes, to reach more preferable treatment effect.Disadvantage of this is that: wetland or plant absorption are located at above certain and are processed After mode, reach the pollutant absorbing in degradation water further.Although this kind of method successfully solves energy consumption, water quality reaching standard row Putting problem, but wetland floor space is big, construction cost is high, the arranged sanitary sewage of natural village at 50 families, the occupation of land of wetland Area just reaches 1200m2Left and right；Or use stereoscopic multi-layer structure, although it is greatly reduced land area, but follows and bring civil engineering Expense is huge, and structure is complicated.
Summary of the invention
For solving the problems referred to above, the invention discloses one way of life sewage treatment process.
In order to reach object above, the present invention provides following technical scheme:
One way of life sewage treatment process, comprises the following steps:
(1) sanitary sewage tentatively filters through grille well, elevator pump deliver to regulating reservoir, through regulating reservoir regulate the sewage water yield, After equilibrium sewage quality, elevator pump deliver to preliminary sedimentation tank；
(2) in preliminary sedimentation tank, the solid such as the silt in sewage sinks at the bottom of pond, and upper strata sewage enters stair oxidation pond；
(3) stair oxidation pond inner route clapboard is divided into regulatory region, zoneofoxidation and neutral zone, adds acid solution sewage at regulatory region PH regulate to 3～5, add Fenton reagent in zoneofoxidation, the oxidation operation of difficult degradation decomposed, add alkali at neutral zone molten Liquid, is adjusted to 6～9 by pH value, and sewage enters secondary oxidation pond after stair oxidation pond preliminary oxidation processes；
(4) secondary oxidation pond is aerobic/anaerobic complex biological filter, be respectively formed in each local in filter tank outer layer be aerobic layer, The aerobic/anaerobic biology composite bed that internal layer is anaerobic layer, middle level is formed by amphimicrobe；Described biological filter membrane is by microbe carrier Forming with the micropopulation in carrier micropore, wherein the top layer of micropopulation is aerobic microbiological colony, and internal layer is for detesting Oxygen animalcule colony；
(5) from secondary oxidation pond, sewage out enters second pond, adds flocculant in second pond, after precipitate and separate, on Clear liquid enters defecator；
(6) being filled with fibrous nodules in defecator, the clear water after fibre-ball filtration enters clear water reserviors；
(7) being provided with ultra violet sterilizer in clear water reserviors, the water after sterilization carries out reuse or discharge.
As preferably, described flocculant is the mixture of bodied ferric sulfate and polyacrylamide.
As preferably, in described secondary oxidation pond, unnecessary mud enters sludge-tank through pipeline, enters mud at sludge-tank Row concentrates, and the supernatant after concentration is back to grille well.
As preferably, described Fenton reagent is the mixed solution of ferrous sulfate and hydrogen peroxide, wherein ferrous sulfate and mistake The mass ratio of hydrogen oxide is 0.1～0.3:1.
As preferably, the dosage of described Fenton reagent is hydrogen peroxide and the matter of COD in pending water in Fenton reagent Amount ratio is 0.02-0.08:1.
As preferably, between defecator and clear water reserviors, it is additionally provided with intermediate pool, for the flow of adjusting water outlet.
As preferably, in described flocculant, bodied ferric sulfate is 10～20:1 with the mass ratio of polyacrylamide.
What the present invention obtained has the beneficial effect that
The present invention first carries out chemical oxidation with Fenton reagent to sewage, makes the hardly degraded organic substance in sewage decompose, subsequently into Secondary oxidation pond carries out biochemical treatment, and the sewage after biochemical treatment removes the Organic substance in water and heavy metal further through flocculation Ion, the most again through fibre-ball filtration and sterilization, improves the treatment effect of sewage disposal, and effluent quality can reach recycle-water Standard, can direct reuse.
Accompanying drawing explanation
Fig. 1, the process chart of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, it is further elucidated with the present invention, it should be understood that following detailed description of the invention is only For the present invention being described rather than limiting the scope of the present invention.
One way of life sewage treatment process, comprises the following steps:
(1) sanitary sewage tentatively filters through grille well, elevator pump deliver to regulating reservoir, through regulating reservoir regulate the sewage water yield, After equilibrium sewage quality, elevator pump deliver to preliminary sedimentation tank；
(2) in preliminary sedimentation tank, the solid such as the silt in sewage sinks at the bottom of pond, and upper strata sewage enters stair oxidation pond；
(3) stair oxidation pond inner route clapboard is divided into regulatory region, zoneofoxidation and neutral zone, adds acid solution sewage at regulatory region PH regulate to 3～5, add Fenton reagent in zoneofoxidation, the oxidation operation of difficult degradation decomposed, Fenton reagent is that sulphuric acid is sub- Ferrum and the mixed solution of hydrogen peroxide, wherein ferrous sulfate is 0.1～0.3:1 with the mass ratio of hydrogen peroxide, the throwing of a reagent Dosage is that in Fenton reagent, hydrogen peroxide is 0.02-0.08:1 with the mass ratio of COD in pending water；Alkali is added molten at neutral zone Liquid, is adjusted to 6～9 by pH value, and sewage enters secondary oxidation pond after stair oxidation pond preliminary oxidation processes；
(4) secondary oxidation pond is aerobic/anaerobic complex biological filter, be respectively formed in each local in filter tank outer layer be aerobic layer, The aerobic/anaerobic biology composite bed that internal layer is anaerobic layer, middle level is formed by amphimicrobe；Described biological filter membrane is by microbe carrier Forming with the micropopulation in carrier micropore, wherein the top layer of micropopulation is aerobic microbiological colony, and internal layer is for detesting Oxygen animalcule colony；Mud unnecessary in secondary oxidation pond enters sludge-tank through pipeline, concentrates mud at sludge-tank, dense Supernatant after contracting is back to grille well；
(5) from secondary oxidation pond, sewage out enters second pond, adds flocculant in second pond, wherein bodied ferric sulfate with The mass ratio of polyacrylamide is 10～20:1；Flocculant is the mixture of bodied ferric sulfate and polyacrylamide, through precipitation point From rear, supernatant enters defecator；
(6) being filled with fibrous nodules in defecator, the clear water after fibre-ball filtration enters clear water reserviors；
(7) being provided with ultra violet sterilizer in clear water reserviors, the water after sterilization carries out reuse or discharge.
Effluent quality after the process using the present invention processes is shown in Table 1
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, also include by with The technical scheme that upper technical characteristic combination in any is formed.It should be pointed out that, for those skilled in the art, Under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also considered as this Bright protection domain.

Claims (7)

1. one way of life sewage treatment process, it is characterised in that comprise the following steps:
(1) sanitary sewage tentatively filters through grille well, elevator pump deliver to regulating reservoir, through regulating reservoir regulate the sewage water yield, After equilibrium sewage quality, elevator pump deliver to preliminary sedimentation tank；
(2) in preliminary sedimentation tank, the solid such as the silt in sewage sinks at the bottom of pond, and upper strata sewage enters stair oxidation pond；
(3) stair oxidation pond inner route clapboard is divided into regulatory region, zoneofoxidation and neutral zone, adds acid solution sewage at regulatory region PH regulate to 3～5, add Fenton reagent in zoneofoxidation, the oxidation operation of difficult degradation decomposed, add alkali at neutral zone molten Liquid, is adjusted to 6～9 by pH value, and sewage enters secondary oxidation pond after stair oxidation pond preliminary oxidation processes；
(4) secondary oxidation pond is aerobic/anaerobic complex biological filter, be respectively formed in each local in filter tank outer layer be aerobic layer, The aerobic/anaerobic biology composite bed that internal layer is anaerobic layer, middle level is formed by amphimicrobe；Described biological filter membrane is by microbe carrier Forming with the micropopulation in carrier micropore, wherein the top layer of micropopulation is aerobic microbiological colony, and internal layer is for detesting Oxygen animalcule colony；
(5) from secondary oxidation pond, sewage out enters second pond, adds flocculant in second pond, after precipitate and separate, on Clear liquid enters defecator；
(6) being filled with fibrous nodules in defecator, the clear water after fibre-ball filtration enters clear water reserviors；
(7) being provided with ultra violet sterilizer in clear water reserviors, the water after sterilization carries out reuse or discharge.
2. domestic sewage treatment process as claimed in claim 1, it is characterised in that described flocculant is bodied ferric sulfate and gathers The mixture of acrylamide.
3. domestic sewage treatment process as claimed in claim 1, it is characterised in that mud unnecessary in described secondary oxidation pond Entering sludge-tank through pipeline, concentrate mud at sludge-tank, the supernatant after concentration is back to grille well.
4. domestic sewage treatment process as claimed in claim 1, it is characterised in that described Fenton reagent is ferrous sulfate and mistake The mixed solution of hydrogen oxide, wherein ferrous sulfate is 0.1～0.3:1 with the mass ratio of hydrogen peroxide.
5. domestic sewage treatment process as claimed in claim 4, it is characterised in that the dosage of described Fenton reagent is Fenton In reagent, hydrogen peroxide is 0.02～0.08:1 with the mass ratio of COD in pending water.
6. domestic sewage treatment process as claimed in claim 1, it is characterised in that also set between defecator and clear water reserviors There is intermediate pool, for the flow of adjusting water outlet.
7. domestic sewage treatment process as claimed in claim 2, it is characterised in that in described flocculant, bodied ferric sulfate is with poly- The mass ratio of acrylamide is 10～20:1.
CN201610301502.7A 2016-05-09 2016-05-09 Domestic sewage treatment process Pending CN105859033A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107032566A (en) * 2017-06-27 2017-08-11 苏州赛易特环保科技有限公司 A kind of sewage water treatment method
CN107129114A (en) * 2017-06-27 2017-09-05 苏州赛易特环保科技有限公司 A kind of processing system of papermaking sewage
CN107162340A (en) * 2017-06-27 2017-09-15 苏州赛易特环保科技有限公司 A kind of sewage disposal system
CN107162341A (en) * 2017-06-27 2017-09-15 苏州赛易特环保科技有限公司 A kind of processing method of papermaking sewage
CN107915368A (en) * 2016-10-11 2018-04-17 广州恒德环保科技有限公司 A kind of domestic sewage processing method
CN108083584A (en) * 2018-01-24 2018-05-29 吴晓丽 A kind of domestic sewage treatment process
CN109133518A (en) * 2018-09-19 2019-01-04 余素萍 A kind of improved method for improving sanitary sewage disposal efficiency under cryogenic conditions

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107915368A (en) * 2016-10-11 2018-04-17 广州恒德环保科技有限公司 A kind of domestic sewage processing method
CN107032566A (en) * 2017-06-27 2017-08-11 苏州赛易特环保科技有限公司 A kind of sewage water treatment method
CN107129114A (en) * 2017-06-27 2017-09-05 苏州赛易特环保科技有限公司 A kind of processing system of papermaking sewage
CN107162340A (en) * 2017-06-27 2017-09-15 苏州赛易特环保科技有限公司 A kind of sewage disposal system
CN107162341A (en) * 2017-06-27 2017-09-15 苏州赛易特环保科技有限公司 A kind of processing method of papermaking sewage
CN108083584A (en) * 2018-01-24 2018-05-29 吴晓丽 A kind of domestic sewage treatment process
CN109133518A (en) * 2018-09-19 2019-01-04 余素萍 A kind of improved method for improving sanitary sewage disposal efficiency under cryogenic conditions
CN109133518B (en) * 2018-09-19 2021-07-30 邵春彦 Improved method for improving domestic sewage treatment efficiency under low-temperature condition

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