CN104773927A - Village and town sewage treatment system - Google Patents
Village and town sewage treatment system Download PDFInfo
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- CN104773927A CN104773927A CN201510205827.0A CN201510205827A CN104773927A CN 104773927 A CN104773927 A CN 104773927A CN 201510205827 A CN201510205827 A CN 201510205827A CN 104773927 A CN104773927 A CN 104773927A
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Abstract
The invention discloses a village and town sewage treatment system which comprises a regulating tank, a fine grille sand settling tank, a sewage treatment tank and a disinfection tank. An isolation area is arranged in the center of the sewage treatment tank, the upper portion of the isolation area is provided with an anaerobic area, the lower portion of the isolation area is provided with an anoxic area, a diversion mixer outlet and a mixed liquid lifting device are arranged at the bottom in the isolation area, the top of the isolation is covered with a movable cover plate, an annular space defined by the exterior of the isolation area and the sewage treatment tank is an aerobic area, the bottom of the aerobic area is communicated with the isolation area, sewage enters the anoxic area through the diversion mixer and the mixed liquid lifting device and is fully mixed with backflow mixed liquid of the aerobic area, water taking equipment is arranged around the anaerobic area, push-flow oxygen supply devices are installed in the aerobic area, and a circle of three-phase separation area is arranged outside the sewage treatment tank. The village and town sewage treatment system has the advantages that the occupied area is small, the energy is saved, the operation is convenient, and the installation, the maintenance and the management are simple, bad smells almost do not occur in the system running process, and deodorization facilities do not need to be equipped.
Description
Technical field
The present invention relates to sewage treatment area, be specifically related to a kind of small towns Sewage treatment systems.
Background technology
Along with improving constantly of living standards of the people, used water is fewer and feweri, and the sewage discharge pollution problem that people produce and life produces is more and more serious.At present, the most sanitary sewage in China small towns adopts the mode of directly discharge, does not take due control measures, has increased the weight of the pollution to environment.Under the new policy of national sustainable development; environment protection has been subject to the attention of governments at all levels and national people; sewage is administered thoroughly to the waste disposal plant of increasing, energy-efficient, the easy strong operability of importance of the environment protecting the mankind to depend on for existence and sewage disposal technology and technique and can play larger pushing effect for the development of national economy.Setting up small towns sewage works to improving the water body environments such as landscaped area, pool, river, small towns, ensureing that Countryside Economic Development plays a part very important.Along with expanding economy, standard of living improves, demographic and economic growth, extensive Development patterns, inorganization big area applies pollutent, wastewater treatment rate is on the low side, and sacrificialing environment and resource go to pursue immediate interest etc., are all the reasons causing water pollutions to be on the rise.Sewage in a large number without fully process is used to irrigate, and has made farmland be polluted.According to the Ministry of Agriculture in the basin accounting for area 85%, by 372 representative area sampling surveys, find that 1/10 of national grain aggregate does not meet hygienic standard.Sewage irrigation also causes grain yield low, pollutes and strengthens, and nutritive ingredient declines.Long-term polluted water irrigates and makes pathogenic agent, mutagenesis, carcinogenic substance move in human body by the food such as grain, veterinary antibiotics, serious harm HUMAN HEALTH.Water pollutions also causes great harm to aquaculture, and pollution of waterhead makes original water technology be subject to unprecedented challenge.
Need a large amount of man power and materials owing to setting up a sewage work, the processing cost for small towns sanitary sewage is high, and floor space is large, constrains the development of sewage disposal greatly.
Summary of the invention
Based on above weak point, the present invention discloses a kind of small towns Sewage treatment systems, processes the sanitary sewage of small towns, community.
The technology used in the present invention feature is as follows: a kind of small towns Sewage treatment systems, comprise equalizing tank, fine fack settling pit, treatment tank and sterilization pool, equalizing tank is connected with fine fack settling pit, fine fack settling pit is connected with treatment tank, treatment tank is connected with sterilization pool, be characterized in, described treatment tank center is provided with isolated area, isolated area top is anaerobic zone, bottom is oxygen-starved area, bottom in isolated area is provided with water conservancy diversion mixer outlet and mixed solution lifting gear, water conservancy diversion mixer outlet is connected with mixed solution lifting gear, removable cover is stamped at isolated area top, the annulus that the outside of isolated area and treatment tank are formed is aerobic zone, be communicated with independent isolated area bottom aerobic zone, water-in is connected with water conservancy diversion mixing tank, sewage enters oxygen-starved area by water conservancy diversion mixing tank and mixed solution lifting gear, and the mixed solution refluxed with aerobic zone mixes completely, anaerobic zone surrounding is provided with intake equipment, intake equipment is connected with dissolved oxygen system, dissolved oxygen system is connected with plug-flow oxygen supply, plug-flow oxygen supply is arranged in aerobic zone, the outer setting for the treatment of tank has a circle three-phase separation area, three-phase separation area is disposed with overflow weir, water leg, triphase separator from top to bottom, water leg is connected with overflow weir, triphase separator upper end is connected with water leg, the lower end of described triphase separator is provided with air damper, gas overflowing seam bar is provided with between air damper and triphase separator, gas overflowing seam bar is connected with aerobic zone, triphase separator is connected with aerobic zone, the water level of aerobic zone is higher than three-phase separation area, and the overflow weir of clear water from top is discharged, the bottom of three-phase separation area is sludge sump, and sludge sump is connected with spoil disposal short tube, and mud gravity drops or falls into sludge sump, thus arrives water, mud, air separation.
The present invention also has following technical characteristic:
1, described oxygen-starved area and oxygen-starved area are placed with flexiplast combined stuffing, and this flexiplast combined stuffing is arrayed, and flexiplast combined stuffing are also provided with the hydroformylation Wei Nilun strand of dwelling raw for microorganism.
The redox potential Ec:100mv ~-100mv of 2, described anaerobic zone.
The dissolved oxygen of 3, described oxygen-starved area controls at 0 ~ 0.5mg/L.
Redox potential Ec:300mv ~ the 400mv of 4, described aerobic zone; Mixed genetic-neural network MLSS:2500 ~ 3500mg/L.
The spray tube outlet of 5, described plug-flow oxygen supply is provided with energy dissipating boring aeration pipe.
The present invention has that floor space is little, energy-conservation, convenient operation, installation and maintenance manage simple feature, and this system cloud gray model produces foul smell hardly, does not need to be equipped with deodorizing facility.
accompanying drawing specification sheets
Fig. 1 is embodiments of the invention 1
vertical view;
Fig. 2 is the side-view of embodiments of the invention 1.
Embodiment
Embodiment 1
As shown in Figure 1-2, the present embodiment provides a kind of small towns Sewage treatment systems, comprise equalizing tank, fine fack settling pit, treatment tank and sterilization pool, equalizing tank is connected with fine fack settling pit, fine fack settling pit is connected with treatment tank, treatment tank is connected with sterilization pool, treatment tank center is provided with isolated area 1, isolated area 1 top is anaerobic zone 2, bottom is oxygen-starved area 3, bottom in isolated area 1 is provided with water conservancy diversion mixer outlet 4 and mixed solution lifting gear 5, water conservancy diversion mixer outlet 4 is connected with mixed solution lifting gear 5, removable cover 6 is stamped at isolated area 1 top, the annulus that the outside of isolated area 1 and treatment tank are formed is aerobic zone 7, be communicated with isolated area 1 bottom aerobic zone 7, sewage passes through equalizing tank successively, fine fack settling pit, water-in, water conservancy diversion mixing tank and mixed solution lifting gear 5 enter oxygen-starved area 3, and the mixed solution refluxed with aerobic zone 7 mixes completely, anaerobic zone 2 surrounding is provided with intake equipment 8, intake equipment 8 is connected with dissolved oxygen system 9, dissolved oxygen system 9 and four is overlapped plug-flow oxygen supply 10 and is connected, four cover plug-flow oxygen supplies 10 are evenly distributed in aerobic zone 7 respectively, the outer setting for the treatment of tank has a circle three-phase separation area, three-phase separation area is disposed with overflow weir 11 from top to bottom, water leg 12, triphase separator 13, water leg 12 is connected with overflow weir 11, triphase separator 13 upper end is connected with water leg 12, the lower end of described triphase separator 13 is provided with air damper 14, be provided with gas overflowing between air damper 14 and triphase separator 13 and stitch bar 15, gas overflowing seam bar 15 is connected with aerobic zone 7, guide air return to aerobic zone 7, air is prevented to be up to triphase separator 13, destroy mud-water separation effect, triphase separator is connected with aerobic zone 7, clear water is discharged from the overflow weir 11 on top, and then flow into sterilization pool 16, the water level of aerobic zone 7 is higher than three-phase separation area, the bottom of three-phase separation area is sludge accumulation district 17, and sludge accumulation district 17 is connected with spoil disposal short tube 18, and a part of mud returns to aerobic zone, or tenesmus falls into the sludge sump in sludge accumulation district 17, thus arrives water, mud, air separation.
Embodiment 2
First sewage enter oxygen-starved area, mix completely with the mixed solution refluxed from aerobic zone (water conservancy diversion mixed lifting device and water fetching device impel backflow), control at 0 ~ 0.5mg/L by regulating water conservancy diversion mixed lifting device or regulating the flow of dissolved oxygen system to control oxygen-starved area dissolved oxygen, in this region, put into flexiplast combined stuffing, this flexiplast combined stuffing is arrayed, and flexiplast combined stuffing is also provided with the hydroformylation Wei Nilun strand of dwelling raw for microorganism
By microorganism strains filler being fixed film form, namely adhere to the microorganism strains group of suspension growth in the microflora of filling surface growth and mixed solution and denitrification denitrogenation process is carried out to the nitric nitrogen in sewage, lifting gear and the special installation form of water fetching device, ensure that effluent stream is to reasonableness, efficient denitrification is carried out to mixed solution, NO
2 -, NO
3 -be reduced to nitrogen (N
2), thus total nitrogen (TN) meets emission standard, significant increase denitrification effect.
Combined sewage from flowing into anaerobic zone from oxygen-starved area, in the reaction times of design con-trol anaerobic zone, makes redox potential Ec:100mv ~-100mv, carries out Phosphurus release.In this region, put into flexiplast combined stuffing, and flexiplast combined stuffing is also provided with dwells hydroformylation Wei Nilun strand raw for microorganism, to part, the protein of ammonification completely or larger molecular organics decompose.In mixed solution suspension growth microorganism strains group in take the photograph the release that phosphorus bacterium under anaerobic carries out phosphorus, this device maximize lifting take the photograph phosphorus bacterium to Phosphurus release effect.
Combined sewage flows into aerobic zone certainly from anaerobic zone, aerobic zone dissolved oxygen controls at 0 ~ 0.5mg/L, redox potential Ec:300mv ~ 400mv, mixed genetic-neural network MLSS:2500 ~ 3500mg/L, the biochemical reaction time reasonable in design, to dirty Organic substance in water (COD, BOD
5) carry out oxidative metabolism process (synthetic cell, CO
2, H2O etc.), ammonia nitrogen (NH
3-N) carry out nitrated (NO
2 -, NO
3 -), take the photograph phosphorus bacterium phosphorus absorbed.No-arbitrary pricing in region, has active sludge (in MLSS various bacterial strain), sewage, air dissolves oxygen.
Native system is provided with 4 cover plug-flow oxygen supplies, plug-flow stirring action of holding concurrently while oxygen supply mixing.This device flow is controlled, thus controls mixed solution oxyty.Change the torrent that ejector dissolved oxygen in the past produces simultaneously, very easily smash mud flco, cause the tiny alumen ustum of water-band, yellow muddy, water outlet phenomenon not up to standard.Increase energy dissipating boring aeration pipe in spray tube outlet, namely do not destroy flco, again can dissolved oxygen, effect can also be had by plug-flow.
Three-phase separation area: the separating effect improving water, mud, air: mud-water separation, the overflow weir of clear water from top is discharged; Mud gravity drops, or enters aerobic zone or enter mud groove, corresponding two groups, discharges outside pond, reaches dephosphorization object for one group as excess sludge.Mud bottom one group utilizes gravitational energy to be back to aerobic zone in time, reduces normally used mud scraper and sludge refluxing apparatus (mud scraper, pump, energy-conservation and minimizing maintenance).Be designed with air plate washer and midway effusion seam bar, guide air return to aerobic zone, prevent air to be up to mud-water separation district, destroy mud-water separation effect.
Mud drainage slot: active sludge crashes into mud groove from the short-range gravity of triphase separator, bottom land is provided with spoil disposal short tube, great shortening spoil disposal distance, change mud pipe in the past and stretch into the easily blocking of pond central authorities, and without blocking, extremely short mud pipe can discharge the phosphor-removing effect that excess sludge reaches best in time, change sludge retention time in the past longer, take the photograph phosphorus bacterium and easily discharge phosphorus, again dissolve in sewage, make phosphorus not easily qualified discharge.
Described anaerobic zone, oxygen-starved area, aerobic zone, three-phase separation area, mud drainage slot are total in same pond, by rationalization's flow direction, optimize integral layout, reach minimizing floor space, reduce investment outlay, reduce energy consumption object.
Claims (6)
1. a small towns Sewage treatment systems, comprise equalizing tank, fine fack settling pit, treatment tank and sterilization pool, equalizing tank is connected with fine fack settling pit, fine fack settling pit is connected with treatment tank, treatment tank is connected with sterilization pool, it is characterized in that, described treatment tank center is provided with isolated area, isolated area top is anaerobic zone, bottom is oxygen-starved area, bottom in isolated area is provided with water conservancy diversion mixer outlet and mixed solution lifting gear, water conservancy diversion mixer outlet is connected with mixed solution lifting gear, removable cover is stamped at isolated area top, the annulus that the outside of isolated area and treatment tank are formed is aerobic zone, be communicated with independent isolated area bottom aerobic zone, water-in is connected with water conservancy diversion mixing tank, sewage enters oxygen-starved area by water conservancy diversion mixing tank and mixed solution lifting gear, and the mixed solution refluxed with aerobic zone mixes completely, anaerobic zone surrounding is provided with intake equipment, intake equipment is connected with dissolved oxygen system, dissolved oxygen system is connected with plug-flow oxygen supply, plug-flow oxygen supply is arranged in aerobic zone, the outer setting for the treatment of tank has a circle three-phase separation area, three-phase separation area is disposed with overflow weir, water leg, triphase separator from top to bottom, water leg is connected with overflow weir, triphase separator upper end is connected with water leg, the lower end of described triphase separator is provided with air damper, gas overflowing seam bar is provided with between air damper and triphase separator, gas overflowing seam bar is connected with aerobic zone, triphase separator is connected with aerobic zone, the water level of aerobic zone is higher than three-phase separation area, and the overflow weir of clear water from top is discharged, the bottom of three-phase separation area is sludge sump, and sludge sump is connected with spoil disposal short tube, and mud gravity drops or falls into sludge sump, thus arrives water, mud, air separation.
2. a kind of small towns according to claim 1 Sewage treatment systems, it is characterized in that: described oxygen-starved area and oxygen-starved area are placed with flexiplast combined stuffing, this flexiplast combined stuffing is arrayed, and flexiplast combined stuffing is also provided with the hydroformylation Wei Nilun strand of dwelling raw for microorganism.
3. a kind of small towns according to claim 1 Sewage treatment systems, is characterized in that: the redox potential Ec:100mv ~-100mv of described anaerobic zone.
4. a kind of small towns according to claim 1 Sewage treatment systems, is characterized in that: the dissolved oxygen of described oxygen-starved area controls at 0 ~ 0.5mg/L.
5. a kind of small towns according to claim 1 Sewage treatment systems, is characterized in that: the redox potential Ec:300mv ~ 400mv of described aerobic zone; Mixed genetic-neural network MLSS:2500 ~ 3500mg/L.
6. a kind of small towns according to claim 1 Sewage treatment systems, is characterized in that: the spray tube outlet of described plug-flow oxygen supply is provided with energy dissipating boring aeration pipe.
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| CN201510205827.0A CN104773927B (en) | 2015-04-28 | 2015-04-28 | A kind of small towns sewage disposal system |
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| CN201510205827.0A CN104773927B (en) | 2015-04-28 | 2015-04-28 | A kind of small towns sewage disposal system |
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| CN104773927B CN104773927B (en) | 2016-05-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745736A (en) * | 2016-12-15 | 2017-05-31 | 华北水利水电大学 | C CBR integral biologicals react sewage-treatment plant |
| CN111170560A (en) * | 2020-01-08 | 2020-05-19 | 广西国宏智鸿环保科技集团有限公司 | Villages and towns sewage purification system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328972A (en) * | 2001-07-27 | 2002-01-02 | 蒲重良 | Composite method for treating industrial and domestic waste water as resource and its equipment |
| KR20040083025A (en) * | 2004-07-30 | 2004-09-30 | 황덕흥 | Tower Wastewater Treatment System for Nitrogen and Phosphorous Removal |
| CN1626460A (en) * | 2003-12-09 | 2005-06-15 | 中国科学院成都生物研究所 | Bioreactor for treating wastewater |
| CN201136823Y (en) * | 2007-12-18 | 2008-10-22 | 华南理工大学 | Aerobic-anaerobic circulating treatment device for waste water |
| CN101870537A (en) * | 2009-04-24 | 2010-10-27 | 钟志长 | Integrated baffling internal circulation fluidization sewage treatment device |
| WO2012067453A2 (en) * | 2010-11-17 | 2012-05-24 | Ahn Dae Hee | Apparatus and method for treating sewage/wastewater using biofilms and aerobic granular sludge |
| CN203715376U (en) * | 2014-01-17 | 2014-07-16 | 安徽锋亚环境技术有限公司 | Assembling stereoscopic A2/O reaction tank for dispersing type sewage treatment in rural area |
| CN203820608U (en) * | 2014-04-30 | 2014-09-10 | 湖南艾布鲁环保科技有限公司 | Village and town sewage treatment and deep purification integrated equipment |
| CN204569681U (en) * | 2015-04-28 | 2015-08-19 | 罗文兵 | A kind of small towns Sewage treatment systems |
-
2015
- 2015-04-28 CN CN201510205827.0A patent/CN104773927B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328972A (en) * | 2001-07-27 | 2002-01-02 | 蒲重良 | Composite method for treating industrial and domestic waste water as resource and its equipment |
| CN1626460A (en) * | 2003-12-09 | 2005-06-15 | 中国科学院成都生物研究所 | Bioreactor for treating wastewater |
| KR20040083025A (en) * | 2004-07-30 | 2004-09-30 | 황덕흥 | Tower Wastewater Treatment System for Nitrogen and Phosphorous Removal |
| CN201136823Y (en) * | 2007-12-18 | 2008-10-22 | 华南理工大学 | Aerobic-anaerobic circulating treatment device for waste water |
| CN101870537A (en) * | 2009-04-24 | 2010-10-27 | 钟志长 | Integrated baffling internal circulation fluidization sewage treatment device |
| WO2012067453A2 (en) * | 2010-11-17 | 2012-05-24 | Ahn Dae Hee | Apparatus and method for treating sewage/wastewater using biofilms and aerobic granular sludge |
| CN203715376U (en) * | 2014-01-17 | 2014-07-16 | 安徽锋亚环境技术有限公司 | Assembling stereoscopic A2/O reaction tank for dispersing type sewage treatment in rural area |
| CN203820608U (en) * | 2014-04-30 | 2014-09-10 | 湖南艾布鲁环保科技有限公司 | Village and town sewage treatment and deep purification integrated equipment |
| CN204569681U (en) * | 2015-04-28 | 2015-08-19 | 罗文兵 | A kind of small towns Sewage treatment systems |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745736A (en) * | 2016-12-15 | 2017-05-31 | 华北水利水电大学 | C CBR integral biologicals react sewage-treatment plant |
| CN111170560A (en) * | 2020-01-08 | 2020-05-19 | 广西国宏智鸿环保科技集团有限公司 | Villages and towns sewage purification system |
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| Publication number | Publication date |
|---|---|
| CN104773927B (en) | 2016-05-25 |
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Effective date of registration: 20190702 Address after: 530023 Twentieth Floor, Building 46, Grand Jiahui ASEAN International Trade Port, 5 Kunlun Avenue, Xingning District, Nanning City, Guangxi Zhuang Autonomous Region, 2005 and 2006 Patentee after: Guangxi Yongchun New Environmental Protection Technology Co., Ltd. Address before: Room 801, Unit 4, Unit 41, Hejiang Street, Daoli District, Harbin, Heilongjiang Province, 150000 Co-patentee before: Yu Maoting Patentee before: Luo Wenbing |