CN105585218B - Wastewater from mechanical industry treatment process - Google Patents

Wastewater from mechanical industry treatment process Download PDF

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Publication number
CN105585218B
CN105585218B CN201610018843.3A CN201610018843A CN105585218B CN 105585218 B CN105585218 B CN 105585218B CN 201610018843 A CN201610018843 A CN 201610018843A CN 105585218 B CN105585218 B CN 105585218B
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waste water
pond
wastewater
water
sedimentation basin
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CN105585218A (en
Inventor
林金华
林泰成
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Huahong Water Group Co ltd
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Wuzhou Huahong Sewage Treatment Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/24Treatment of water, waste water, or sewage by flotation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic 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)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Physical Water Treatments (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The present invention provides a kind of wastewater from mechanical industry treatment process, after waste water retains large particulate matter by grid pond, demulsification reaction dephosphorization is carried out into demulsification pond, dissolved air flotation is carried out subsequently into air floatation machine, anaerobic pond, anoxic pond, aerobic tank are sequentially entered again carries out biochemical treatment, be separated by solid-liquid separation subsequently into sedimentation basin, finally through filtering, sterilize it is up to standard after discharge.The processing technological flow of wastewater from mechanical industry of the present invention is simple, operating cost is low, safe and reliable to operation, water stabilization is up to standard.

Description

Wastewater from mechanical industry treatment process
Technical field
The present invention relates to sewage treatment field, especially a kind of wastewater from mechanical industry treatment process.
Background technology
Mechanical processing sewage main source is that metallic wastewaters, the waste water such as workshop manufacture cleaning iron content waste water include mainly:It washes It washs outside the waste water oil removals such as waste water, cleaning waste water, cleaning ground waste water, emulsifying liquid waste water, also containing there are many grease, pH value In acidity, COD high, biodegradability is poor.Water quality is more complex, is unable to direct emission.It is huge to be machined water consumption, how to utilize useless It is engineering difficult point that water, which carries out recovery processing,.
Invention content
That the purpose of the present invention is to provide a kind of flows is simple, operating cost is low, safe and reliable to operation, water stabilization is up to standard Wastewater from mechanical industry treatment process.
To achieve the above object, wastewater from mechanical industry treatment process of the invention, waste water retain bulky grain by grid pond After substance, demulsification reaction dephosphorization is carried out into demulsification pond, carries out dissolved air flotation subsequently into air floatation machine, then sequentially enter anaerobism Pond, anoxic pond, aerobic tank carry out biochemical treatment, are separated by solid-liquid separation subsequently into sedimentation basin, finally up to standard by filtering, sterilizing After discharge.
Further, specific process step is as follows:
(1)Pretreatment:Waste water enters grid pond and retains large particulate matter by grid, then from regulating reservoir is flowed into equilibrium water Matter water, makes waste water even into subsequent processing units;
(2)Demulsification reaction dephosphorization:Waste water enters demulsification pond, and CaCl is put into demulsification pond2, add PAC and flocculate Sedimentation;
(3)Dissolved air flotation:Waste water enters air floatation machine, and the suspension flco in waste water is adhered to the microbubble of air floatation machine generation On, it climbs up on top of the water with bubble, forms dross and scrape removing dross;
(4)AAO technique biochemical treatments:Waste water sequentially enters anaerobic pond, anoxic pond, aerobic tank, and by the mixing of aerobic tank Liquid and the sludge in post precipitation pond flow back into anoxic pond, the wherein built-in flexible biologic packing material of anaerobic pond, anoxic pond simultaneously, will give up Deliquescent macromolecule, hard-degraded substance are decomposed into low molecule, degradable substance in water, improve the ratio of BOD/COD, enhancing Biodegradability;Then waste water carries out Aerobic Process for Treatment from aerobic tank is flowed into, and the elastic biological filler installed in aerobic tank is attached with Oxygen bacterium is handled the organic substance in waste water by aerobic bacteria and the extraneous oxygen provided;
(5)It is separated by solid-liquid separation:From flowing into sedimentation basin, solid impurity caused by biochemical treatment can flow out waste water with waste water, sink Shallow lake pond carries out settlement treatment to solid impurity;Meanwhile the activated sludge that biochemical treatment generates is sunk in sedimentation basin with waste water It forms sediment and detaches, most of activated sludge flows back into anoxic pond, and excess sludge is discharged to sludge concentration tank and carries out concentration;
(6)Filtering:Waste water is sent to pressure filter by water pump and is filtered from intermediate pool is flowed by waste water;
(7)Sterilize water storage:Waste water by filtering carries out disinfection in sterilization pool, final qualified discharge water storage.
The anaerobic pond, anoxic pond effective stay time are 10~12 hours.
The space network of elastic biological filler for the benefit of aerobic bacteria attachment in the aerobic tank.
The oxygen provided needed for the aerobic tank makes in such a way that air blower carries out aeration aerating to waste water in aerobic tank Dissolved oxygen be maintained at 2.0mg/L.
The sedimentation basin is vertical-flow inclined-tube sedimentation tank, and sedimentation basin surface loading is 1.0m3/m2.h, hydraulic detention time is 4.5h。
The substantive distinguishing features of the present invention and progress are:
The application wastewater from mechanical industry treatment process has the beneficial effect that:
(1)First using demulsification reaction dephosphorization, air floatation machine is then taken to remove the suspended matter in waste water, effective purified water Matter.
(2)Using AAO technique biochemical treatments, 1. so that flow is simple, structures are few, and capital cost is greatly saved, and Operating cost is low, and floor space is small;2. using in raw wastewater carbonaceous organic material and endogenous metabolism product as carbon source, save and add The expense of outer carbon source, and the C/N ratios of raising are obtained, to ensure the abundant progress of denitrification;3. anoxic pond aerobic tank it Before, since denitrification consumes a part of organic matter in waste water, the organic loading of aerobic tank had not only been alleviated in this way, but also can improve The settling property of activated sludge is in favor of controlling sludge bulking, and the basicity that denitrification process generates can compensate nitrifying process Consumption to basicity.
(3)High degree of automation, effluent characteristics are stablized.
Description of the drawings
Fig. 1 is the process flow diagram of the present invention.
Specific implementation mode
Below in conjunction with drawings and examples, the present invention is described further.
The wastewater from mechanical industry treatment process of the present invention, specific process step are as follows:
(1)Pretreatment:Waste water enters grid pond and retains large particulate matter by grid, and large particulate matter is avoided to enter sewage Processing system results in blockage.Make waste water even into subsequent processing units with Balance Water Quality water from regulating reservoir is flowed into again.
It is arranged by regulating reservoir, energy fully Balance Water Quality, water enable sewage is relatively uniform to enter subsequent processing units, The shock resistance for improving whole system reduces the design scale of processing unit.Advantageously reduce operating cost and variation water quality band The influence come.In view of wastewater from mechanical industry coefficient of variation is bigger, regulating reservoir designs hydraulic detention time 24 hours.
(2)Demulsification reaction dephosphorization:Waste water enters demulsification pond, and CaCl is put into demulsification pond2, add PAC and flocculate Sedimentation.
Because of mechanic factory workers, there are many cathode active agent on surface, has a large amount of phosphorus reagent, waste water that must first be broken Breast reaction.CaCl2Generation calcium phosphate is carried out, water is not readily dissolved in, is added after PAC carries out biochemical flocculating setting and goes dephosphorization.
(3)Dissolved air flotation:Waste water enters air floatation machine, and the suspension flco in waste water is adhered to the microbubble of air floatation machine generation On, it climbs up on top of the water with bubble, forms dross and scrape removing dross.
Air floatation machine be using air and water under-fixed pressure condition, so that gas is greatly dissolved in water, make every effort to In saturation state, is then discharged the molten carbonated drink of pressure is formed by by depressurizing, a large amount of micro air bubble is generated, and in waste water Suspension flco come into full contact with, so that suspension flco is adhered on micro air bubble, climb up on top of the water with bubble, formed dross, scrape Removing dross can reach purpose of purifying the water quality.
(4)AAO technique biochemical treatments:Waste water sequentially enters anaerobic pond, anoxic pond, aerobic tank, and by the mixing of aerobic tank Liquid and the sludge in post precipitation pond flow back into anoxic pond, the wherein built-in flexible biologic packing material of anaerobic pond, anoxic pond simultaneously, will give up Deliquescent macromolecule, hard-degraded substance are decomposed into low molecule, degradable substance in water, improve the ratio of BOD/COD, increase Strong biodegradability;Then waste water carries out Aerobic Process for Treatment from aerobic tank is flowed into, the elastic biological filler attachment installed in aerobic tank There is aerobic bacteria, the organic substance in waste water is handled by aerobic bacteria and the extraneous oxygen provided.
AAO techniques are a kind of front establishment methods, belong to single-stage sludge denitrification technique, i.e., only there are one sludge recirculation systems It is alternately under aerobic and anoxia condition with the microorganism species of mixed-liquor return system, mixed liquor, in organic concentration height Or its different effect will be played when low respectively.Its technological process is the advanced anoxic pond of waste water, then into aerobic tank, and by aerobic tank Mixed liquor and sedimentation basin sludge simultaneously flow back into anoxic pond.
The built-in flexible biologic packing material of anaerobic pond, anoxic pond, it acts as by deliquescent macromolecule in waste water, difficult to degrade Substance decomposition is low molecule, degradable substance enhances biodegradability to improve the ratio of BOD/COD, is subsequent Aerobic Process for Treatment provides condition, and anaerobic pond, anoxic pond effective stay time are 10~12 hours, COD removal rates about 30~60%.It is useless Water carries out Aerobic Process for Treatment from aerobic tank is flowed into.The built-in flexible biologic packing material of aerobic tank, the elastic biological filler are for the benefit of aerobic The space network of bacterium attachment, has good gas distribution distribution performance, the treatment effect of aerobic tank, netted knot is greatly improved Structure can make aerobic bacteria be easy to adhere to, and be handled the organic substance in water by aerobic bacteria after biofilm, and the external world to be provided Substance be oxygen, the present invention using air blower to waste water carry out aeration aerating, so that contact-oxidation pool dissolved oxygen is maintained at The level of 2.0mg/L.COD and BOD is able to 80% or more removal.
(5)It is separated by solid-liquid separation:From flowing into sedimentation basin, solid impurity caused by biochemical treatment can flow out waste water with waste water, sink Shallow lake pond carries out settlement treatment to solid impurity;Meanwhile the activated sludge that biochemical treatment generates is sunk in sedimentation basin with waste water It forms sediment and detaches, most of activated sludge flows back into anoxic pond, and excess sludge is discharged to sludge concentration tank and carries out concentration.
It is 1.0m that sedimentation basin, which uses vertical-flow inclined-tube sedimentation tank, sedimentation basin surface loading,3/m2.h, hydraulic detention time is 4.5h.Also there are one the process of metabolism, the biomembrane of aging death can fall off and be drifted out with water the microorganism of aerobic tank, sink Shallow lake pond carries out settlement treatment to the biomembrane to fall off.Meanwhile sedimentation basin makes activated sludge and waste water carry out precipitation to detach, wherein greatly To anoxic pond, excess sludge is discharged to sludge concentration tank and carries out concentration amount of activated sludge reflux.
(6)Filtering:Waste water is sent to pressure filter by water pump and is filtered from intermediate pool is flowed by waste water.
(7)Sterilize water storage:Waste water by filtering carries out disinfection in sterilizing tank, final qualified discharge water storage.

Claims (5)

1. a kind of wastewater from mechanical industry treatment process, which is characterized in that after waste water retains large particulate matter by grid pond, enter Demulsification pond carries out demulsification reaction dephosphorization, and dissolved air flotation is carried out subsequently into air floatation machine, then sequentially enters anaerobic pond, anoxic pond, good Oxygen pond carry out biochemical treatment, be separated by solid-liquid separation subsequently into sedimentation basin, finally through filtering, sterilize it is up to standard after discharge;
Specific process step is as follows:
(1)Pretreatment:Waste water enters grid pond and retains large particulate matter by grid, then from regulating reservoir is flowed into Balance Water Quality water Amount, makes waste water even into subsequent processing units;
(2)Demulsification reaction dephosphorization:Waste water enters demulsification pond, and CaCl is put into demulsification pond2, add PAC and carry out flocculating setting;
(3)Dissolved air flotation:Waste water enters air floatation machine, and the suspension flco in waste water is adhered on the microbubble of air floatation machine generation, with Bubble climbs up on top of the water together, forms dross and scrapes removing dross;
(4)AAO technique biochemical treatments:Waste water sequentially enters anaerobic pond, anoxic pond, aerobic tank, and by the mixed liquor of aerobic tank and The sludge in post precipitation pond flows back into anoxic pond, the wherein built-in flexible biologic packing material of anaerobic pond, anoxic pond simultaneously, will be in waste water Deliquescent macromolecule, hard-degraded substance are decomposed into low molecule, degradable substance, improve the ratio of BOD/COD, and enhancing can give birth to The property changed;Then waste water carries out Aerobic Process for Treatment from aerobic tank is flowed into, and the elastic biological filler installed in aerobic tank is attached with aerobic bacteria, The organic substance in waste water is handled by aerobic bacteria and the extraneous oxygen provided;
(5)It is separated by solid-liquid separation:Waste water is from flowing into sedimentation basin, and solid impurity caused by biochemical treatment can be flowed out with waste water, sedimentation basin Settlement treatment is carried out to solid impurity;Meanwhile the activated sludge that biochemical treatment generates carries out precipitation point in sedimentation basin with waste water From most of activated sludge flows back into anoxic pond, and excess sludge is discharged to sludge concentration tank and carries out concentration;
(6)Filtering:Waste water is sent to pressure filter by water pump and is filtered from intermediate pool is flowed by waste water;
(7)Sterilize water storage:Waste water by filtering carries out disinfection in sterilization pool, final qualified discharge water storage.
2. wastewater from mechanical industry treatment process according to claim 1, it is characterised in that:The anaerobic pond, anoxic pond have It is 10~12 hours to imitate the residence time.
3. wastewater from mechanical industry treatment process according to claim 1, it is characterised in that:Elasticity in the aerobic tank is raw The space network of object filler for the benefit of aerobic bacteria attachment.
4. wastewater from mechanical industry treatment process according to claim 1, it is characterised in that:It is provided needed for the aerobic tank Oxygen makes the dissolved oxygen in aerobic tank be maintained at 2.0mg/L in such a way that air blower carries out aeration aerating to waste water.
5. wastewater from mechanical industry treatment process according to claim 1, it is characterised in that:The sedimentation basin is vertical-flow oblique Pipe sedimentation basin, sedimentation basin surface loading are 1.0m3/m2H, hydraulic detention time 4.5h.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106007208A (en) * 2016-07-04 2016-10-12 衢州市晟煜化工有限公司 Chemical wastewater purification treatment method
CN106186580A (en) * 2016-08-31 2016-12-07 武汉东川自来水科技开发有限公司 A kind of emulsion sewage disposal system and processing method
CN106587497A (en) * 2016-12-07 2017-04-26 河池市技术开发中心 Machining wastewater treatment system
CN107032564A (en) * 2017-06-21 2017-08-11 孙东光 A kind of fecal treatment equipment and method
CN107585972A (en) * 2017-10-27 2018-01-16 山东三星玉米产业科技有限公司 Grease processing waste water handling process and device
RU187325U1 (en) * 2018-06-19 2019-03-01 Общество с ограниченной ответственностью "ИНФРАЭКОПРОЕКТ" SEWAGE TREATMENT DEVICE
CN109437494A (en) * 2018-12-26 2019-03-08 苏州苏沃特环境科技有限公司 A kind of processing unit and method of water-jet loom sewage
CN110759584A (en) * 2019-10-10 2020-02-07 天津中冀源环保科技有限公司 Emulsion wastewater treatment process
CN111559827B (en) * 2020-04-23 2021-06-15 南京禹智智能科技有限公司 Biological treatment method of desulfurization and denitrification tail liquid
CN112607975A (en) * 2020-12-25 2021-04-06 苏州市环境保护有限公司 Comprehensive treatment method of cutting fluid wastewater
CN113788584A (en) * 2021-09-24 2021-12-14 惠州市吉邦精密技术有限公司 Machining wastewater treatment method and industrial wastewater purification method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1931749A (en) * 2006-09-27 2007-03-21 山东贵和显星纸业股份有限公司 Paper-making effluent purifying treatment process
CN101327996A (en) * 2007-06-22 2008-12-24 宝山钢铁股份有限公司 Treating process of dilute emulsified oily watewater
CN102557341A (en) * 2011-12-26 2012-07-11 上海集惠环保科技发展有限公司 Treatment method of high-concentration emulsion waste water
CN102942285A (en) * 2012-11-06 2013-02-27 中国石油集团工程设计有限责任公司 Sewage treatment system and method for natural gas purifying factory in H2S-containing gas field
CN103395931A (en) * 2013-08-02 2013-11-20 江苏和顺环保股份有限公司 Processing technology for waste emulsified liquid and machining wastewater
CN103864266A (en) * 2014-03-24 2014-06-18 江苏省环境科学研究院 Waste-paper papermaking wastewater and sludge recycling method
CN104370418A (en) * 2014-11-10 2015-02-25 辽宁省石油化工规划设计院有限公司 Treatment method of chemical sewage
CN104803548A (en) * 2015-04-01 2015-07-29 浙江碧源环保科技有限公司 Treating and recycling zero-emission technology and equipment for coking phenol-cyanogen wastewater

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103068748A (en) * 2010-08-18 2013-04-24 西门子工业公司 Contact-stabilization/prime-float hybrid

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1931749A (en) * 2006-09-27 2007-03-21 山东贵和显星纸业股份有限公司 Paper-making effluent purifying treatment process
CN101327996A (en) * 2007-06-22 2008-12-24 宝山钢铁股份有限公司 Treating process of dilute emulsified oily watewater
CN102557341A (en) * 2011-12-26 2012-07-11 上海集惠环保科技发展有限公司 Treatment method of high-concentration emulsion waste water
CN102942285A (en) * 2012-11-06 2013-02-27 中国石油集团工程设计有限责任公司 Sewage treatment system and method for natural gas purifying factory in H2S-containing gas field
CN103395931A (en) * 2013-08-02 2013-11-20 江苏和顺环保股份有限公司 Processing technology for waste emulsified liquid and machining wastewater
CN103864266A (en) * 2014-03-24 2014-06-18 江苏省环境科学研究院 Waste-paper papermaking wastewater and sludge recycling method
CN104370418A (en) * 2014-11-10 2015-02-25 辽宁省石油化工规划设计院有限公司 Treatment method of chemical sewage
CN104803548A (en) * 2015-04-01 2015-07-29 浙江碧源环保科技有限公司 Treating and recycling zero-emission technology and equipment for coking phenol-cyanogen wastewater

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
气浮+A/O组合工艺处理汽车机械加工废水;倪宁 蒋岸;《环境科技》;20101231;第23卷(第6期);第41页左栏第一段至第42页左栏最后一段 *

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