CN101857334A - Sewage treatment device and sewage treatment process thereof - Google Patents
Sewage treatment device and sewage treatment process thereof Download PDFInfo
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- CN101857334A CN101857334A CN200910048906A CN200910048906A CN101857334A CN 101857334 A CN101857334 A CN 101857334A CN 200910048906 A CN200910048906 A CN 200910048906A CN 200910048906 A CN200910048906 A CN 200910048906A CN 101857334 A CN101857334 A CN 101857334A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses a sewage treatment device. The device is characterized in that: a reaction tank is connected with first and second aerobic/sedimentation tanks at the same time; the first and the second aerobic/sedimentation tanks are connected with each other in parallel; and the reaction tank is provided with an anaerobic zone, an anoxic zone and an aerobic zone. By combining the reaction tank and the two aerobic/sedimentation tanks into a basic unit, the two aerobic/sedimentation tanks serve as an aeration tank and a sedimentation tank alternately, so that the aims of low maintenance cost, small area occupation and saved investment cost are fulfilled; the first and the second aerobic/sedimentation tanks discharge water alternately and continuously; and constant water level operation is achieved due to the arrangement of a water flowing channel and an electric weir gate (or an air-life weir gate) so as to avoid energy loss caused by water level changes. The invention discloses the sewage treatment device and a sewage treatment process thereof.
Description
Technical field:
The present invention relates to the technical field of water treatment field, specifically a kind of improved intermittent activated sludge process treatment unit and sewage treatment process thereof.
Background technology:
SBR technology full name " intermittent activated sludge process ", its operator scheme is made up of water inlet, reaction, precipitation, water outlet, 5 primary processes of wait, flow into from sewage and to begin to end up being one-period to standby time, all processes are all carried out in a reaction tank that is provided with aeration or whipping appts successively.Operational cycle goes round and begins again, and constantly sewage is handled.In whole process, 5 primary processes are interval type and occur successively, and water level is also in continuous variation in the reaction tank.
The merits and demerits of SBR technology and traditional activated sludge process is compared as follows:
1, SBR technology only need be provided with a reaction tank, or sets up an equalizing tank.The latter then need be provided with equalizing tank, preliminary sedimentation tank, second pond and other reaction tank.SBR technology is compared with it, and significantly floor space is little, and civil engineering and equipment investment cost are low;
2, in the sbr reactor pond, the concentration for the treatment of water is time to time change, when influent quality constantly worsens, in order to obtain treatment effect preferably, only needs simple reaction times, the sedimentation time of changing, and is equivalent to the modifier scale.And the concentration for the treatment of water is to change along water (flow) direction in the latter pond, in order to obtain treatment effect preferably, can only increase the quantity of the area and the equipment of reaction tank, has nothing for it;
3, the SBR process treatment device is compared with the latter, constitutes merely, and number of devices such as the reaction tank volume is little, water pump and pipe arrangement, aeration, stirring, water outlet are few, and maintenance cost is little;
4, SBR technology is compared with traditional activated sludge process, and weak point has 2 points: the former is gap, water inlet, gap water outlet for (1), and the latter is continuously water inlet, continuous effluent; (2) the former is for becoming the water level operation, and the latter is permanent water level operation.Intermittently water-in and water-out have prolonged time span, become the water level operation and have increased energy consumption.
Summary of the invention:
The purpose of this invention is to provide a kind of improved intermittent activated sludge process treatment unit and sewage treatment process thereof, it is big that it can overcome in the conventional art floor space, civil engineering and equipment investment cost height, and " intermittent activated sludge process " water-in and water-out have simultaneously intermittently prolonged time span, become the some shortcomings that the water level operation has increased energy consumption.
To achieve these goals, technical scheme of the present invention is: a kind of waste disposal plant, it mainly comprises reaction tank, it is characterized in that: reaction tank links to each other with first, second two aerobic sedimentation ponds simultaneously, in parallel between first, second two aerobic sedimentation ponds, be provided with anaerobic zone, oxygen-starved area and aerobic zone in the reaction tank.
A kind of sewage treatment process, it is characterized in that: described sewage treatment process comprises that following cloth is rapid: a, sewage enter the anaerobic zone of reaction tank from the reaction tank water-in, and successively through oxygen-starved area, aerobic zone, after reaction tank water outlet weir gate flows into water stream channel; B, sewage flows into first aerobic sedimentation pond through water stream channel and influent weir then, this moment, first aerobic sedimentation pond was made aeration tank usefulness, aeration tube 10 in second aerobic sedimentation pond is not worked, and makes settling tank usefulness, and sewage obtains gravitational settling and forms supernatant liquor in second aerobic sedimentation pond; C, by the time the second aerobic sedimentation pond water level rise to Chi Ding, the influent weir and the effluent weir of second aerobic sedimentation pond are opened simultaneously, the sewage of coming from reaction tank water outlet weir gate enters second aerobic sedimentation pond through the flowing water passage, supernatant liquor in second aerobic sedimentation pond is released, and discharge through effluent weir, after the mud under the partly precipitated is back to the anaerobic zone of reaction tank; D, when second aerobic sedimentation pond is discharged supernatant liquor, first aerobic sedimentation pond stops aeration, enters gravitational settling, and the influent weir of first aerobic sedimentation pond is closed, make sewage can only enter second aerobic sedimentation pond, continue supernatant liquor is released effluent weir; E, behind setting-up time, the second aerobic sedimentation pond effluent weir is closed, second aerobic sedimentation pond is done the aeration tank and is used, by the time the water level of second aerobic sedimentation pond rises to Chi Ding, the effluent weir and the influent weir of first aerobic sedimentation pond are opened, supernatant liquor in first aerobic sedimentation pond is discharged, and the mud under the partly precipitated is back to the anaerobic zone of reaction tank; F, when first aerobic sedimentation pond is discharged supernatant liquor, second aerobic sedimentation pond stops aeration, enter gravitational settling, and the influent weir of second aerobic sedimentation pond closed, this moment, the sewage from reaction tank water outlet weir gate can only enter first aerobic sedimentation pond, continued supernatant liquor is released the effluent weir of first aerobic sedimentation pond; G, the cloth that repeats above-mentioned b-f are rapid, finish until sewage disposal.
The present invention has following characteristics during use:
1, kept SBR " intermittent activated sludge process " technology and constituted merely, the reaction tank volume is little, and number of devices such as water pump and pipe arrangement, aeration, stirring, water outlet are few, and maintenance cost is low, plurality of advantages such as floor space is little, investment cost province;
2, realized that first, second aerobic sedimentation pond replaces continuous effluent, and the setting by flowing water passage and electronic weir gate (or gas is carried weir gate), realized permanent water level operation, exempted the power loss that change of level causes;
3, the middle level gas that disposes in aerobic sedimentation pond is carried the cyclic aeration device and is had the synchronous nitration and denitrification function; Zone aeration efficient height, the utilization ratio height of oxygen; The refluence runner of unique design makes the dead band can not occur by the active sludge thorough mixing; The aeration degree of depth attenuating make plurality of advantages such as energy consumption reduction;
4, carry in the cyclic aeration device at middle level gas, sewage can enter the isolating cylinder bottom along with decline passway, because the facultative mud of bottom is in anaerobic state, larger molecular organics in the sewage is converted into polyhydroxybutyrate fat (UFA), the synthetic Triphosaden (ATP) of polyP bacteria rapid absorption discharges phosphoric acid salt in the facultative mud.Simultaneously, under anoxic condition, facultative mud preferentially obtains carbon source, finishes denitrogenation, is converted into nitrogen and overflows;
5, be provided with aeration tube at the middle part of isolating cylinder, when bubble rises, produce gas and put forward effect, drive the mixed solution current and rise, after mixed solution entered the aeration zone, the oxygen source that obtains enriching replenished, thereby finishes dephosphorization, ammonia nitrogen removal.Attached phosphorus sludge proportion is bigger, is deposited at the bottom of the pond, and ammonia nitrogen turns to gas evolution;
6, the present invention is when operation, and the aeration tube that is installed in each isolating cylinder all has independently tolerance regulatory function, regulate by tolerance, can change the lift velocity of muddy water mixed solution in this isolating cylinder, the control residence time of muddy water mixed solution in this, that is the reaction times in this.So, original comparatively fuzzy technological process control is refined into the conversion zone that several have individualized feature, in debugging, do different settings at different water quality, make treatment technology of the present invention seem more effective and reasonable, when facing different sewage, has good adaptive faculty.
7, the present invention is provided with a plurality of zone isolation tubes, the aeration tube that is provided with in each isolating cylinder all forms the muddy water mixed solution ascending current in the one's respective area, ascending current is through oxygen-starved area, aerobic zone, overflow from zone isolation tube upper edge, be back to the bottom anaerobic zone again and carry out the such working cycle of anti-nitration reaction.A plurality of zone isolation tubes are arranged, just repeat repeatedly reaction process, thus bigger raising the reaction depth and the efficient of nitration denitrification;
Description of drawings:
Fig. 1 is the structural representation of reaction tank of the present invention
Fig. 2 is the another structural representation of reaction tank of the present invention
Fig. 3 is the structural representation of aerobic sedimentation pond of the present invention
Fig. 4 is the structural representation of one embodiment of the invention
Fig. 5 is the another structural representation of one embodiment of the invention
Embodiment:
Below in conjunction with drawings and Examples the present invention is further described.
The present invention mainly comprises reaction tank, its difference with the prior art is: reaction tank links to each other with first, second two aerobic sedimentation ponds 12,13 simultaneously, in parallel between first, second two aerobic sedimentation ponds, be provided with anaerobic zone 2, oxygen-starved area 3 and aerobic zone 4 in the reaction tank.Reaction tank one end is provided with water-in 1, and the other end is provided with water outlet weir gate 6, and the water outlet weir gate links to each other with water stream channel 7, and the bottom of oxygen-starved area and aerobic zone is provided with aeration tube 5.One end of first, second aerobic sedimentation pond is provided with influent weir 9,8, and the other end is provided with effluent weir 14,15, and influent weir links to each other with water stream channel, is provided with at least 2 separating tubes 11 in aerobic, the settling tank, is provided with aeration tube 10 in each separating tube.Top aerobic, settling tank is provided with the fan airflow inlet pipe, and the fan airflow inlet pipe is provided with fan airflow import 17, and the fan airflow inlet pipe links to each other with aeration tube 10, and the junction of fan airflow inlet pipe and aeration tube 10 is provided with air inlet adjustment valve 16.Generally, the aeration tube quantity of bottom, oxygen-starved area is less than the aeration tube quantity of aerobic zone bottom, and the concentration of the dissolved oxygen of aerobic zone is greater than 2 mg/litre, and the concentration of the dissolved oxygen of oxygen-starved area is less than 0.5 mg/litre, and the concentration of the dissolved oxygen of anaerobic zone is less than 0.1 mg/litre.
A kind of sewage treatment process, its difference with the prior art is: described sewage treatment process comprises that following cloth is rapid: a, sewage enter the anaerobic zone of reaction tank from the reaction tank water-in, and successively through oxygen-starved area, aerobic zone, after reaction tank water outlet weir gate flows into water stream channel; B, sewage flows into first aerobic sedimentation pond through water stream channel and influent weir then, this moment, first aerobic sedimentation pond was made aeration tank usefulness, aeration tube 10 in second aerobic sedimentation pond is not worked, and makes settling tank usefulness, and sewage obtains gravitational settling and forms supernatant liquor in second aerobic sedimentation pond; C, by the time the second aerobic sedimentation pond water level rise to Chi Ding, the influent weir and the effluent weir of second aerobic sedimentation pond are opened simultaneously, the sewage of coming from reaction tank water outlet weir gate enters second aerobic sedimentation pond through the flowing water passage, supernatant liquor in second aerobic sedimentation pond is released, and discharge through effluent weir, after the mud under the partly precipitated is back to the anaerobic zone of reaction tank; D, when second aerobic sedimentation pond is discharged supernatant liquor, first aerobic sedimentation pond stops aeration, enters gravitational settling, and the influent weir of first aerobic sedimentation pond is closed, make sewage can only enter second aerobic sedimentation pond, continue supernatant liquor is released effluent weir; E, behind setting-up time, the second aerobic sedimentation pond effluent weir is closed, second aerobic sedimentation pond is done the aeration tank and is used, by the time the water level of second aerobic sedimentation pond rises to Chi Ding, the effluent weir and the influent weir of first aerobic sedimentation pond are opened, supernatant liquor in first aerobic sedimentation pond is discharged, and the mud under the partly precipitated is back to the anaerobic zone of reaction tank; F, when first aerobic sedimentation pond is discharged supernatant liquor, second aerobic sedimentation pond stops aeration, enter gravitational settling, and the influent weir of second aerobic sedimentation pond closed, this moment, the sewage from reaction tank water outlet weir gate can only enter first aerobic sedimentation pond, continued supernatant liquor is released the effluent weir of first aerobic sedimentation pond; G, the cloth that repeats above-mentioned b-f are rapid, finish until sewage disposal.
During use, pending water (sewage) enters the anaerobic zone 2 of reaction tank by reaction tank water-in 1, and successively through oxygen-starved area 3, aerobic zone 4, flows into water stream channel 7 at water outlet weir gate 6.A small amount of aerator is set in oxygen-starved area 3, more aerator is set in aerobic zone.Sewage is finished acidication, denitrification, releases phosphorus, is reached and remove partial organic substances in this flow process.Flow into aerobic sedimentation pond (referring to Fig. 1) through water stream channel 7 then
In force, the upper end is provided with influent weir in the aerobic sedimentation pond, and sewage is gone into bottom, pond anaerobic zone 18 by the water-in decline passway, mixes contacting with the mud that is deposited in the bottom, pond, carries out anaerobic reaction.At this moment, the aeration tube 10 that is installed in region separation tube 11 middle parts is producing rising bubble continually, its gas that causes is proposed the muddy water mixed solution upwards lifting of effect with anaerobic zone, through being in the oxygen-starved area 21 between anaerobic zone and the aeration tube 10, further to nutrition degraded and conversion in the sewage.Mud, water mixture continue to rise, and arrive aeration tube with the upper part, promptly are full of the aerobic zone 20 of aeration bubble, produce aerobic carbonization and nitration reaction.When mud, water mixed liquid continue to rise to zone isolation tube bead, because of between zone isolation tube and the adjacent isolating cylinder and and pool wall between all have the current decline passway, the muddy water mixed solution that overflows the isolating cylinder bead also flows to the anaerobic zone 18 of bottom along decline passway, part muddy water mixed solution is done one's respective area self circulation and is used, another part muddy water mixed solution flows into the anaerobic zone of adjacent area, does next circulation and uses.5 isolating cylinders are arranged, just repeat 5 circulations.In so big process, made full use of the oxygen supply mixing energy, natural in addition waterpower circulation forms anaerobism, anoxic, the aerobic environment of cross-distribution, make nutritive substance formation diffusion convection current in the water, fortified water, liquid, gas three-phase mass transfer so just are easy to generate high-efficient denitrification and dephosphorization and novel oxidative ammonolysis (referring to Fig. 3) to greatest extent.
Be installed in the aeration tube 10 in each isolating cylinder, independently tolerance regulatory function is all arranged, regulate, can change the lift velocity of muddy water mixed solution in this isolating cylinder by tolerance, the control residence time of muddy water mixed solution in this, that is the reaction times in this.So, original comparatively fuzzy technological process control is refined into the conversion zone that several have individualized feature, in debugging, do different settings at different water quality, make treatment technology of the present invention seem more effective and reasonable, when facing different sewage, has good adaptive faculty.
In an embodiment, a reaction tank and two aerobic sedimentation ponds are combined into elementary cell, two aerobic sedimentation ponds are alternately as aeration tank and settling tank (referring to Fig. 4).
Pending water (sewage) enters the anaerobic zone 2 of reaction tank from reaction tank water-in 1, and successively through oxygen-starved area 3, aerobic zone 4, flows into water stream channel 7 at reaction tank water outlet weir gate 6.A small amount of aerator is set in oxygen-starved area 4, more aerator is set in aerobic zone.Sewage is finished acidication, denitrification, releases phosphorus, is reached and remove partial organic substances in this flow process.Influent weir 9 through the water stream channel 7 and first aerobic sedimentation pond flows into first aerobic sedimentation pond 12 then, carries out middle level gas and carries cyclic aeration, and this moment, first aerobic sedimentation pond was made aeration tank usefulness.Aerating apparatus in second aerobic sedimentation pond 13 is not worked, and makes settling tank usefulness, and water liquid obtains gravitational settling and forms supernatant liquor in second aerobic sedimentation pond.By the time second aerobic sedimentation pond, 13 water levels rise to Chi Ding, the second aerobic sedimentation pond influent weir 8 and effluent weir 15 are opened simultaneously, the water of coming from reaction tank water outlet weir gate 6 enters second aerobic sedimentation pond 13 through flowing water passage 7 by the second aerobic sedimentation pond influent weir 8, the supernatant liquor in second aerobic sedimentation pond is released the second aerobic sedimentation pond effluent weir 15 discharge.And the mud under the partly precipitated is back to the anaerobic zone 2 of reaction tank;
When second aerobic sedimentation pond was discharged supernatant liquor, first aerobic sedimentation pond 12 stopped aeration, enters gravitational settling.And the first aerobic sedimentation pond influent weir 9 closed.This moment, the pending water from reaction tank water outlet weir gate 6 no longer entered first aerobic sedimentation pond 12, can only still enter second aerobic sedimentation pond 13, continued supernatant liquor is released the second aerobic sedimentation pond water outlet weir gate 15; Behind setting-up time, the second aerobic sedimentation pond water outlet weir gate 20 is closed, and second aerobic sedimentation pond, 13 beginning middle level gas are carried cyclic aeration, do the aeration tank and use.By the time the second aerobic sedimentation pond water level rises to Chi Ding, the sedimentation time of first aerobic sedimentation pond also arrives setting-up time, the first aerobic sedimentation pond water outlet weir gate 14 and water inlet weir gate 9 are opened, supernatant liquor in first aerobic sedimentation pond 12 is discharged, and the mud under the partly precipitated is back to the anaerobic zone 2 of reaction tank.
When first aerobic sedimentation pond 12 was discharged supernatant liquor, second aerobic sedimentation pond 13 stopped aeration, enters gravitational settling.And second aerobic sedimentation pond water inlet weir gate 8 closed, this moment, the pending water from reaction tank water outlet weir gate 6 no longer entered second aerobic sedimentation pond 13, can only enter first aerobic sedimentation pond 12, continue supernatant liquor is released the first aerobic sedimentation pond water outlet weir gate 14.Do not stop repeatedly then, handled fully until sewage.
Claims (8)
1. waste disposal plant, it mainly comprises reaction tank, it is characterized in that: reaction tank links to each other with first, second two aerobic sedimentation ponds simultaneously, and is in parallel between first, second two aerobic sedimentation ponds, is provided with anaerobic zone, oxygen-starved area and aerobic zone in the reaction tank.
2. a kind of waste disposal plant as claimed in claim 1 is characterized in that: reaction tank one end is provided with water-in, and the other end is provided with the water outlet weir gate, and the water outlet weir gate links to each other with water stream channel, and the bottom of oxygen-starved area and aerobic zone is provided with aeration tube (5).
3. a kind of waste disposal plant as claimed in claim 1 or 2, it is characterized in that: an end of first, second aerobic sedimentation pond is provided with influent weir, the other end is provided with effluent weir, influent weir links to each other with water stream channel, be provided with at least 2 separating tubes in aerobic, the settling tank, be provided with aeration tube (10) in each separating tube.
4. a kind of waste disposal plant as claimed in claim 2, it is characterized in that: top aerobic, settling tank is provided with the fan airflow inlet pipe, the fan airflow inlet pipe is provided with the fan airflow import, the fan airflow inlet pipe links to each other with aeration tube (10), and the junction of fan airflow inlet pipe and aeration tube (10) is provided with the air inlet adjustment valve.
5. sewage treatment process, it is characterized in that: described sewage treatment process comprises that following cloth is rapid: a, sewage enter the anaerobic zone of reaction tank from the reaction tank water-in, and successively through oxygen-starved area, aerobic zone, after reaction tank water outlet weir gate flows into water stream channel; B, sewage flows into first aerobic sedimentation pond through water stream channel and influent weir then, this moment, first aerobic sedimentation pond was made aeration tank usefulness, aeration tube in second aerobic sedimentation pond (10) is not worked, and makes settling tank usefulness, and sewage obtains gravitational settling and forms supernatant liquor in second aerobic sedimentation pond; C, by the time the second aerobic sedimentation pond water level rise to Chi Ding, the influent weir and the effluent weir of second aerobic sedimentation pond are opened simultaneously, the sewage of coming from reaction tank water outlet weir gate enters second aerobic sedimentation pond through the flowing water passage, supernatant liquor in second aerobic sedimentation pond is released, and discharge through effluent weir, after the mud under the partly precipitated is back to the anaerobic zone of reaction tank; D, when second aerobic sedimentation pond is discharged supernatant liquor, first aerobic sedimentation pond stops aeration, enters gravitational settling, and the influent weir of first aerobic sedimentation pond is closed, make sewage can only enter second aerobic sedimentation pond, continue supernatant liquor is released effluent weir; E, the second aerobic sedimentation pond effluent weir are closed, second aerobic sedimentation pond is done the aeration tank and is used, by the time the water level of second aerobic sedimentation pond rises to Chi Ding, the effluent weir and the influent weir of first aerobic sedimentation pond are opened, supernatant liquor in first aerobic sedimentation pond is discharged, and the mud under the partly precipitated is back to the anaerobic zone of reaction tank; F, when first aerobic sedimentation pond is discharged supernatant liquor, second aerobic sedimentation pond stops aeration, enter gravitational settling, and the influent weir of second aerobic sedimentation pond closed, this moment, the sewage from reaction tank water outlet weir gate can only enter first aerobic sedimentation pond, continued supernatant liquor is released the effluent weir of first aerobic sedimentation pond; G, the cloth that repeats above-mentioned b-f are rapid, finish until sewage disposal.
6. a kind of sewage treatment process as claimed in claim 5, it is characterized in that: reaction tank one end is provided with water-in, the other end is provided with the water outlet weir gate, the water outlet weir gate links to each other with water stream channel, the bottom of oxygen-starved area and aerobic zone is provided with aeration tube (5), and the aeration tube quantity of bottom, oxygen-starved area is less than the aeration tube quantity of aerobic zone bottom.
7. as claim 5 or 6 described a kind of waste disposal plants, it is characterized in that: an end of first, second aerobic sedimentation pond is provided with influent weir, the other end is provided with effluent weir, influent weir links to each other with water stream channel, be provided with at least 2 separating tubes in aerobic, the settling tank, be provided with aeration tube (10) in each separating tube.
8. a kind of waste disposal plant as claimed in claim 7, it is characterized in that: top aerobic, settling tank is provided with the fan airflow inlet pipe, the fan airflow inlet pipe is provided with the fan airflow import, the fan airflow inlet pipe links to each other with aeration tube (10), and the junction of fan airflow inlet pipe and aeration tube (10) is provided with the air inlet adjustment valve.
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| CN200910048906XA CN101857334B (en) | 2009-04-07 | 2009-04-07 | Sewage treatment device and sewage treatment process thereof |
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| CN200910048906XA CN101857334B (en) | 2009-04-07 | 2009-04-07 | Sewage treatment device and sewage treatment process thereof |
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| CN103420483A (en) * | 2013-07-11 | 2013-12-04 | 中山市环保实业发展有限公司 | Sequencing batch sewage treatment device |
| CN103601296A (en) * | 2013-11-15 | 2014-02-26 | 玉溪师范学院 | D-A2/O sewage treatment reactor with two-phase anaerobic-anoxic alternate operation |
| CN103613193A (en) * | 2013-11-25 | 2014-03-05 | 玉溪师范学院 | Divisional water feed type D-A<2>0 sewage treatment method |
| CN104291530A (en) * | 2014-10-17 | 2015-01-21 | 中山环保产业股份有限公司 | Sequencing batch biochemical sewage treatment device and sedimentation-drainage method thereof |
| CN104341076A (en) * | 2013-08-02 | 2015-02-11 | 湖北盘古环保工程技术有限公司 | Continuous biochemical reaction and intermittent static precipitation integrated sewage treatment device |
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| CN1239406C (en) * | 2003-02-13 | 2006-02-01 | 上海达源环境科技工程有限公司 | Biochemical reactor for treating sewage |
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| CN103420483A (en) * | 2013-07-11 | 2013-12-04 | 中山市环保实业发展有限公司 | Sequencing batch sewage treatment device |
| CN104341076A (en) * | 2013-08-02 | 2015-02-11 | 湖北盘古环保工程技术有限公司 | Continuous biochemical reaction and intermittent static precipitation integrated sewage treatment device |
| CN103601296A (en) * | 2013-11-15 | 2014-02-26 | 玉溪师范学院 | D-A2/O sewage treatment reactor with two-phase anaerobic-anoxic alternate operation |
| CN103601296B (en) * | 2013-11-15 | 2015-11-25 | 玉溪师范学院 | A kind of D-A of diphasic anaerobic anoxic alternate run 2/ O sewage-treating reactor |
| CN103613193A (en) * | 2013-11-25 | 2014-03-05 | 玉溪师范学院 | Divisional water feed type D-A<2>0 sewage treatment method |
| CN103613193B (en) * | 2013-11-25 | 2015-05-20 | 玉溪师范学院 | Divisional water feed type D-A<2>0 sewage treatment method |
| CN104291530A (en) * | 2014-10-17 | 2015-01-21 | 中山环保产业股份有限公司 | Sequencing batch biochemical sewage treatment device and sedimentation-drainage method thereof |
| CN104291530B (en) * | 2014-10-17 | 2016-05-04 | 中山环保产业股份有限公司 | A kind of method of batch-type biochemical sewage treatment device and sedimentation and drawing thereof |
| CN106348522A (en) * | 2016-08-25 | 2017-01-25 | 广西壮族自治区环境保护科学研究院 | Low-energy-consumption intensifying-denitrifying integrated reactor |
| CN110217868A (en) * | 2018-12-30 | 2019-09-10 | 上海康恒环境股份有限公司 | A kind of horizontal sedimentation tank for municipal solid waste incinerator percolate treating process |
| CN113045123A (en) * | 2021-03-19 | 2021-06-29 | 湖南三友环保科技有限公司 | Sewage treatment process based on seasonal fluctuation of sewage flow and water quality |
| CN115215472A (en) * | 2022-06-30 | 2022-10-21 | 温州市城南市政建设维修有限公司 | Water circulation system for greening |
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