CN202358993U - Efficient urban sewage treatment system low in sludge production rate - Google Patents

Efficient urban sewage treatment system low in sludge production rate Download PDF

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CN202358993U
CN202358993U CN 201120503743 CN201120503743U CN202358993U CN 202358993 U CN202358993 U CN 202358993U CN 201120503743 CN201120503743 CN 201120503743 CN 201120503743 U CN201120503743 U CN 201120503743U CN 202358993 U CN202358993 U CN 202358993U
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zone
sludge
aerobic
pipe
aerobic zone
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梅荣武
李明智
沈浙萍
韦彦斐
喻治平
张刚
李欲如
王付超
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Zhejiang Environmental Science Research and Design Institute
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Abstract

本实用新型公开了一种高效低污泥产率的城镇污水处理系统。进水泵、阀门、流量计、厌氧区、缺氧区、好氧区顺次相连,厌氧区和缺氧区内设有潜水搅拌机,好氧区底部设有曝气装置,曝气装置与鼓风机相连,后生动物培养投加槽与好氧区相连,好氧区底部经混合液回流泵、混合液回流管与缺氧区底部相连,好氧区上部与二沉池底部相连,二沉池内设有刮泥机,二沉池上部设有出水管,二沉池底部经沉淀区污泥回流泵、污泥管与厌氧区底部、缺氧区底部相连。本实用新型的城镇污水节能高效低污泥产率的技术,适用于一切活性污泥法及其变形技术,也可用于有生物载体的生物处理技术;既可用于新建城镇污水工程,也可用于已建城镇污水处理厂工程的改造,改造费用极低。

Figure 201120503743

The utility model discloses an urban sewage treatment system with high efficiency and low sludge yield. Inlet pump, valve, flow meter, anaerobic zone, anoxic zone, and aerobic zone are connected in sequence. Submersible mixers are installed in the anaerobic zone and anoxic zone, and an aeration device is installed at the bottom of the aerobic zone. The blower is connected, the metazoan cultivation dosing tank is connected to the aerobic zone, the bottom of the aerobic zone is connected to the bottom of the anoxic zone through the mixed liquid return pump and the mixed liquid return pipe, the upper part of the aerobic zone is connected to the bottom of the secondary sedimentation tank, and the bottom of the secondary sedimentation tank There is a mud scraper, the upper part of the secondary settling tank is equipped with an outlet pipe, and the bottom of the secondary settling tank is connected to the bottom of the anaerobic zone and the bottom of the anoxic zone through the sludge return pump and sludge pipe in the sedimentation zone. The energy-saving, high-efficiency and low-yield technology of urban sewage of the utility model is applicable to all activated sludge methods and deformation techniques thereof, and can also be used in biological treatment techniques with biological carriers; The reconstruction cost of the existing urban sewage treatment plant project is extremely low.

Figure 201120503743

Description

A kind of town sewage treatment system of efficient low sludge yield
Technical field
The utility model relates to biotechnology and field of environment engineering technology, relates in particular to a kind of town sewage treatment system of efficient low sludge yield.
Background technology
Along with the raising of wastewater treatment in China rate, the mud generation is multiplied, and the sludge treatment problem becomes increasingly conspicuous.The activated sludge process dirty water living creature processing technique is widely used in China's municipal effluent and Industrial Wastewater Treatment with efficient outstanding advantage.Yet along with improving constantly of wastewater treatment rate, effective disposal of a large amount of excess sludges of its generation become also that we have to face is stubborn problem very.According to the statistical communique of issue State Statistics Bureau in March, 2011,2010 the year end municipal sewage plant's daily handling ability reach 10262 ten thousand steres, increase by 13.4% than the end of last year; Treatment rate of domestic sewage reaches 76.9%, improves 1.6 percentage points.374.56 hundred million tons of annual co-processing waste water.Mud is pressed water ratio 80% and is calculated, and the dewatered sludge of generation is greater than 3,000 ten thousand t/a.Compare so huge sludge yield, the mud of China's town sewage plant 80% does not obtain stabilizing treatment at present.Therefore, how rationally to handle and to dispose the mud of Sewage Plant, the outlet that solves municipal sludge has become very urgent task.
Town sewage is handled method commonly used has physics, chemistry and biochemical process, and normally the combination of several method just can reach requirement.Which kind of method is handled town sewage all will produce secondary pollutant--mud, and therefore pursuing minimizing of mud also is the problem that engineering design need be considered.Original position reduces the excess sludge productive rate in sewage treatment process, and the various mud decrement technology that reduce excess sludge production from the source have become the focus and the developing direction of biological sewage treatment research.The mud decrement technology of metazoan predation mikrobe has caused the extensive concern of Chinese scholars because of having advantages such as economical and efficient, non-secondary pollution.It is according to ecological principle that the metazoan original position is cleared up the mud technology; Through the generation of metazoal predation in the fortified foodstuff chain with the minimizing excess sludge; Guaranteeing under the effluent quality prerequisite up to standard, making the processing of mud and disposal transfer to " source control " from " end treatment " to a certain extent.Metazoan is a food with organic detritus and dead organism.Along with organic minimizing in the water, wheel animalcule, oligochaetes, nematode have appearred, and wheel animalcule can engulf the mud that is scattered,
Utilize miniature metazoan to carry out mud decrement, not only can reach higher mud decrement effect, and have less energy consumption, working cost low, do not have by product and environment do not produced advantages such as secondary pollution.
Summary of the invention
The purpose of the utility model is to overcome the big deficiency of mud generation in the existing town sewage treating processes, and a kind of town sewage treatment system of efficient low sludge yield is provided.
The town sewage treatment system of efficient low sludge yield comprises that intake pump, valve, under meter, diving mixer, gas blower, anaerobic zone, oxygen-starved area, aerobic zone, second pond, aerating apparatus, settling region sludge reflux pump, metazoan cultivation add groove, mud scraper, mixed-liquor return pump, mixed-liquor return pipe, sludge pipe and rising pipe; Intake pump, valve, under meter, anaerobic zone, oxygen-starved area, aerobic zone link to each other in order; Be provided with diving mixer in anaerobic zone and the oxygen-starved area, the aerobic zone bottom is provided with aerating apparatus, and aerating apparatus links to each other with gas blower; The metazoan cultivation adds groove and links to each other with aerobic zone; The aerobic zone bottom links to each other with the bottom, oxygen-starved area through mixed-liquor return pump, mixed-liquor return pipe, and aerobic zone top links to each other with the second pond bottom, is provided with mud scraper in the second pond; Second pond top is provided with rising pipe, and sludge reflux pump, sludge pipe link to each other with anaerobic zone bottom, bottom, oxygen-starved area through the settling region in the second pond bottom.
The beneficial effect that the utility model compared with prior art has:
(1) sludge disposal is transferred to " source control " from " end treatment ".In sewage treatment process mud original position decrement has saved that the required mud of mud subsequent disposal concentrates, the expense of dosing dehydration, links such as outward transport landfill, drying or burning.
(2) economical, efficient, practical, the non-secondary pollution problem: finally in biochemical system, reach the mud original position decrement more than 70%, the investment of ton water is subdued more than 25%, and the sludge treatment cost can be saved more than 25%.Significantly reduce occupation of land.
(3) flexibility is strong, applied range
Present technique is applicable to the minimizing to excess sludge of all activated sludge process biological sewage treatment and deformation technology thereof; Can under the situation that does not influence the normal operation of Sewage Plant, implement the sludge reduction transformation; Reduced investment, low, the instant effect of working cost, application value is high.
Description of drawings
Fig. 1 is the town sewage treatment system structural representation that efficiently hangs down sludge yield;
Among the figure, intake pump 1, valve 2, under meter 3, diving mixer 4, gas blower 5, anaerobic zone 6, oxygen-starved area 7, aerobic zone 8, second pond 9, aerating apparatus 10, settling region sludge reflux pump 11, metazoan are cultivated and add groove 12, mud scraper 13, mixed-liquor return pump 14, mixed-liquor return pipe 15, sludge pipe 16, rising pipe 17.
Embodiment
As shown in Figure 1, efficiently the town sewage treatment system of low sludge yield comprises that intake pump 1, valve 2, under meter 3, diving mixer 4, gas blower 5, anaerobic zone 6, oxygen-starved area 7, aerobic zone 8, second pond 9, aerating apparatus 10, settling region sludge reflux pump 11, metazoan cultivation add groove 12, mud scraper 13, mixed-liquor return pump 14, mixed-liquor return pipe 15, sludge pipe 16 and rising pipe 17; Intake pump 1, valve 2, under meter 3, anaerobic zone 6, oxygen-starved area 7, aerobic zone 8 link to each other in order; Be provided with diving mixer 4 in anaerobic zone 6 and the oxygen-starved area 7, aerobic zone 8 bottoms are provided with aerating apparatus 10, and aerating apparatus 10 links to each other with gas blower 5; The metazoan cultivation adds groove 12 and links to each other with aerobic zone 8; Aerobic zone 8 bottoms link to each other with 7 bottoms, oxygen-starved area through mixed-liquor return pump 14, mixed-liquor return pipe 15, and aerobic zone 8 tops link to each other with second pond 9 bottoms
Be provided with mud scraper 13 in the second pond 9, second pond 9 tops are provided with rising pipe 17, and sludge reflux pump 11, sludge pipe 16 link to each other with anaerobic zone 6 bottoms, 7 bottoms, oxygen-starved area through the settling region in second pond 9 bottoms.
The town sewage treatment process of efficient low sludge yield is: town sewage gets into anaerobic zone 6 through intake pump 1, valve 2 and under meter 3; Be provided with the abundant contact that stirrer 4 guarantees muddy water in the anaerobic zone 6; Get into oxygen-starved area 7 through anaerobic zone 6 town sewages, be provided with the abundant contact that stirrer 4 guarantees muddy water in the oxygen-starved area 7, town sewage gets into aerobic zone 8 through oxygen-starved area 7; Aerating system 10 in the aerobic zone 8 links to each other with gas blower 5 through pipeline and guarantees to continue efficient oxygen supply; Make aerobic zone DO more than 2mg/l, the metazoan cultivation adds groove 12 and regularly adds highly active miniature metazoan to aerobic zone 8, and the bottom muddy water mixed solution of aerobic zone 8 is back to 7 bottoms, oxygen-starved area through mixed-liquor return pump 14, mixed-liquor return pipe 15 and carries out denitrification denitrogenation; Return current ratio of the mixed liquid is controlled at 1~4 times of flooding quantity volume; The top water outlet of aerobic zone 8 gets into the bottom of second pond 9, is effluxed by rising pipe 17 water outlets through mud scraper 13 backs, and the mud of second pond 9 bottoms mainly is back to oxygen-starved area 7 through settling region sludge reflux pump 11 simultaneously; Be back to anaerobic zone 6 on a small quantity, excess sludge decontamination mud treatment system is handled.
Embodiment 1
Certain town sewage water quality is pH6~7, CODcr100~200mg/l, NH<sub >3</sub>-N:15~30mg/l, TP2~4mg/l, water temperature is a normal temperature, the water yield is 1000m<sup >3</sup>/ d, the sewage technology of everywhere managing is grid-A<sup >2</sup>/ O-second pond-sterilization-water outlet requires to handle the back water outlet and reaches CODcr<the GB18918-2002 standard of 60mg/>l.The anaerobic hydrolysis district residence time is 1.5h, establishes the diving mixer stirring in the district and makes the muddy water thorough mixing.The anoxic pond residence time is 3h, and the Aerobic Pond residence time is 12h.Adopt activated sludge process, blast aeration can promote the aeration tube oxygenation, and aerobic zone adds metazoan and strengthens predation, and with this understanding, < 60mgl, the mud decrement effect reaches more than 70% water outlet CODcr, steady running half a year.

Claims (1)

1.一种高效低污泥产率的城镇污水处理系统,其特征在于包括进水泵(1)、阀门(2)、流量计(3)、潜水搅拌机(4)、鼓风机(5)、厌氧区(6)、缺氧区(7)、好氧区(8)、二沉池(9)、曝气装置(10)、沉淀区污泥回流泵(11)、后生动物培养投加槽(12)、刮泥机(13)、混合液回流泵(14)、混合液回流管(15)、污泥管(16)和出水管(17);进水泵(1)、阀门(2)、流量计(3)、厌氧区(6)、缺氧区(7)、好氧区(8)顺次相连,厌氧区(6)和缺氧区(7)内设有潜水搅拌机(4),好氧区(8)底部设有曝气装置(10),曝气装置(10)与鼓风机(5)相连,后生动物培养投加槽(12)与好氧区(8)相连,好氧区(8)底部经混合液回流泵(14)、混合液回流管(15)与缺氧区(7)底部相连,好氧区(8)上部与二沉池(9)底部相连,二沉池(9)内设有刮泥机(13),二沉池(9)上部设有出水管(17),二沉池(9)底部经沉淀区污泥回流泵(11)、污泥管(16)与厌氧区(6)底部、缺氧区(7)底部相连。 1. An urban sewage treatment system with high efficiency and low sludge yield, characterized in that it includes an inlet pump (1), a valve (2), a flow meter (3), a submersible mixer (4), a blower (5), an anaerobic zone (6), anoxic zone (7), aerobic zone (8), secondary settling tank (9), aeration device (10), sludge return pump in sedimentation zone (11), metazoan cultivation dosing tank ( 12), mud scraper (13), mixed liquid return pump (14), mixed liquid return pipe (15), sludge pipe (16) and outlet pipe (17); water inlet pump (1), valve (2), The flow meter (3), the anaerobic zone (6), the anoxic zone (7), and the aerobic zone (8) are connected in sequence, and a submersible mixer (4 ), the bottom of the aerobic area (8) is provided with an aeration device (10), the aeration device (10) is connected with the blower (5), and the metazoan cultivation dosing tank (12) is connected with the aerobic area (8). The bottom of the oxygen zone (8) is connected to the bottom of the anoxic zone (7) through the mixed solution return pump (14) and the mixed solution return pipe (15), and the upper part of the aerobic zone (8) is connected to the bottom of the secondary settling tank (9). There is a mud scraper (13) inside the settling tank (9), an outlet pipe (17) is provided on the upper part of the secondary settling tank (9), and the sludge return pump (11) and sludge The pipe (16) is connected with the bottom of the anaerobic zone (6) and the bottom of the anoxic zone (7).
CN 201120503743 2011-12-07 2011-12-07 Efficient urban sewage treatment system low in sludge production rate Expired - Lifetime CN202358993U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102515425A (en) * 2011-12-07 2012-06-27 浙江省环境保护科学设计研究院 High efficiency town sewage treatment system and process with low yield of sludge
CN105948414A (en) * 2016-06-30 2016-09-21 浙江环耀环境建设有限公司 Emulsion wastewater treatment system and process
CN112028394A (en) * 2020-08-25 2020-12-04 长江勘测规划设计研究有限责任公司 Low-consumption type high-standard treatment device for urban sewage and its treatment method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102515425A (en) * 2011-12-07 2012-06-27 浙江省环境保护科学设计研究院 High efficiency town sewage treatment system and process with low yield of sludge
CN105948414A (en) * 2016-06-30 2016-09-21 浙江环耀环境建设有限公司 Emulsion wastewater treatment system and process
CN105948414B (en) * 2016-06-30 2019-09-27 浙江环耀环境建设有限公司 A kind of emulsifying liquid waste water processing system and its treatment process
CN112028394A (en) * 2020-08-25 2020-12-04 长江勘测规划设计研究有限责任公司 Low-consumption type high-standard treatment device for urban sewage and its treatment method
CN112028394B (en) * 2020-08-25 2023-01-24 长江勘测规划设计研究有限责任公司 Low-consumption and high-standard treatment device for urban sewage and its treatment method

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