CN102701447A - Multifunctional pilot-scale test system for sewage treatment and application of system - Google Patents
Multifunctional pilot-scale test system for sewage treatment and application of system Download PDFInfo
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- CN102701447A CN102701447A CN201210140616XA CN201210140616A CN102701447A CN 102701447 A CN102701447 A CN 102701447A CN 201210140616X A CN201210140616X A CN 201210140616XA CN 201210140616 A CN201210140616 A CN 201210140616A CN 102701447 A CN102701447 A CN 102701447A
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Abstract
The invention discloses a multifunctional pilot-scale test system for sewage treatment. The system consists of a first reaction tank, a second reaction tank, a third reaction tank and a fourth reaction tank which are arrayed in a line, wherein a stirring device is arranged in the first reaction tank and is used for mixing water flowing in the first reaction tank and backflow sludge or mixed liquid; the second reaction tank, the third reaction tank and the fourth reaction tank are respectively taken as an aerobic pond or a precipitation tank; stirring devices are respectively arranged in the three reaction tanks and are respectively used for mixing inflowing water and sewage in the tanks; and a triangular weir water outlet groove or a decanter for discharging water is arranged in each reaction tank, and an aeration system and/or a perforating dredging tube or a mud scraper is/are arranged in each reaction tank. The invention also discloses application of the multifunctional pilot-scale test system. The multifunctional pilot-scale test system can be used for simulating three series of processes, namely anaerobic-anoxic-oxic (AAO), sequencing batch reactor (SBR) and integral activate sludge process (UNITANK) and has a function of adjusting parameters on water quality of raw water, treatment scales, high resolution timer (HRT) proportions, sludge reflux quantity, mixed liquid reflux quantity and the like, thus meeting the various requirements on applied research and development for the sewage treatment.
Description
Technical field
The invention belongs to water-treatment technology field, relate to a kind of WWT pilot test system and application thereof that is used to simulate multiple water treatment technology.
Background technology
In recent years, along with raising to the attention of environmental protection cause and people's environmental consciousness, environmental requirement, to the research of urban sewage treatment technology deepen continuously with extensively, emerged large quantities of WWT research and development, production, operation enterprise.Therefore, the research of breadboard lab scale can not have been satisfied the needs of actual scientific research, domesticly begins to set up pilot plant simulated sewage treatment process.
Nanjing Kesheng Environmental Protection Technology Co., Ltd provides a kind of multi-functional sewage that is used for scientific research, displaying and teaching purposes to handle pilot test system, and (application number: 200920047313.7), this system can handle the sewage of multiple water quality condition under multiple environment.But this device biochemical treatment unit is too simple, can only simulate AO technology; And this device is more laid particular stress on teaching and is showed, does not consider to optimize the function of actual sewage production run.
WWT pilot plant few in number all can only be simulated single biochemical processing process at present, and application function is limited; And most of pilot plant is mainly used in the design variable of confirming newly-built Sewage Plant, and function of consideration optimization Sewage Plant production run, so control measures and amplitude are all more limited.
Summary of the invention
One of the object of the invention is intended to propose a kind ofly can simulate multiple water treatment technology, and the WWT pilot test system that can provide scientific research to support for the optimization of Sewage Plant production run.
For realizing above-mentioned purpose; WWT pilot test system of the present invention comprises the reaction tank body, and it is made up of first reaction tank that is word order, second reaction tank, the 3rd reaction tank and the 4th reaction tank, and each reaction tank is communicated with sewer line, sludge pipe and air line respectively; Wherein
Said first reaction tank is used for simulation and detests anoxic pond, is provided with whisking appliance in it, is used to realize mixing of this first reaction tank water inlet and returned sluge or mixed solution;
Said second reaction tank, the 3rd reaction tank and the 4th reaction tank are respectively applied for as Aerobic Pond or settling tank, are separately installed with whisking appliance in three reaction tanks, are respectively applied for to mix sewage in water inlet and the pond; And also be provided with the V-notch weir effluent trough or strain hydrophone in three each ponds of reaction tank and be used for water outlet, be provided with aerating system simultaneously in each pond and be used for aeration and/or be provided with the perforation suction pipe or mud scraper is used for spoil disposal.
As improvement of the present invention, said first reaction tank adopts the water outlet of drop funnel, and regulates said first reaction tank available depth and the volume through the height that changes this drop funnel.
As improvement of the present invention, the shared pool wall of adjacent two reaction tanks in said first reaction tank, second reaction tank, the 3rd reaction tank and the 4th reaction tank.
As improvement of the present invention, the aerated conduit of said aerating system is " rich " font and lays.
As improvement of the present invention, said perforation suction pipe adopts pvc pipe, and the tube wall perforate, evenly is laid at the bottom of the pond, is used for being deposited on that active sludge at the bottom of the pond is collected and with it discharging or backflow.
As improvement of the present invention, said water technology comprises AAO series of processes, SBR series of processes and UNITANK series of processes.
Two of the object of the invention is to disclose a kind ofly to be used above-mentioned multi-functional sewage and handles pilot test system and carry out AAO series of processes mimic method, and it specifically comprises the steps:
At first; By the water inlet of first reaction tank, realize that through whisking appliance wherein water inlet mixes with returned sluge or mixed solution, and keep mud maintenance suspension in the pond; Again from wherein drop funnel water outlet, make sewage get into said second reaction tank and the 3rd reaction tank to carry out aerobic treatment; After this second reaction tank and the water inlet of the 3rd reaction tank,, and utilize said aerating system to carry out aeration through whisking appliance mixing water inlet and said sewage separately; Sewage after this second reaction tank and the 3rd reaction tank carry out aerobic treatment gets into the 4th reaction tank and carries out precipitation process, through mud scraper wherein, makes the mixed solution mud-water separation, and supernatant is discharged from V-notch weir effluent trough wherein.
Three of the object of the invention is to disclose a kind ofly to be used above-mentioned multi-functional sewage and handles pilot test system and carry out UNITANK series of processes mimic method, and it specifically comprises the steps:
(1) sewage gets into second reaction tank, adopts whisking appliance or aerating system to carry out aeration, and mixed solution gets into the 4th reaction tank in the pond behind the 3rd reaction tank, and in the 4th reaction tank through said V-notch weir draining;
(2) second reaction tanks stop into water, continue aeration, and sewage gets into the 3rd reaction tank, and the 4th reaction tank continues draining;
(3) second reaction tanks stop aeration, and are quiet heavy, and sewage continues to get into the 3rd reaction tank, and the 4th reaction tank continues draining, and excess sludge is discharged through perforation suction pipe wherein;
(4) sewage gets into the 4th reaction tank, adopts whisking appliance or aerating system to carry out aeration, and mixed solution gets into second reaction tank through the 3rd reaction tank, and passes through the V-notch weir draining at this second reaction tank;
(5) the 4th reaction tanks stop into water, continue aeration, and sewage gets into the 3rd reaction tank, and this second reaction tank continues draining;
(6) the 4th reaction tanks stop aeration, and are quiet heavy, and sewage continues to get into the 3rd reaction tank, and this second reaction tank continues draining, and excess sludge is discharged through perforation suction pipe wherein, finishes until draining;
The simulation to the UNTANK series of processes can be realized in circular flow above-mentioned steps (1)-(6).
Four of the object of the invention is to disclose a kind ofly to be used above-mentioned multi-functional sewage and handles pilot test system and carry out SBR series of processes mimic method; It specifically comprises: at first; Said second reaction tank, the 3rd reaction tank and each pond of the 4th reaction tank independently intake; Aerating system and the whisking appliance of each reaction tank through separately carries out aerated reaction then, and again after deposition is idle, sewage is strained the hydrophone water outlet through each reaction tank respectively.
Reaction tank body among the present invention is made up of 4 reaction tanks, and be yi word pattern and arrange, the shared pool wall in adjacent reaction pond, wherein first reaction tank is than other pond height 1.0m.Reaction tank body material adopts A3 steel plate, thick 8mm; In anticorrosion employing epoxy coal glass reinforced plastic (four oily two cloth), the two-layer red lead paint one deck of outer anticorrosion employing finish paint.Reaction tank body first reaction tank is mainly simulated and is detested anoxic pond, and second and third mainly simulates Aerobic Pond and settling tank with four reaction tanks, is the main product institute that realizes saprobiont absorption degradation organic pollutant, denitrogenation dephosphorizing.
Tubing system among the present invention: form by equipment such as gate valve, pump and sewage, mud, air line.Mainly realize the switching of each simulation process through the adjusting (keying of gate valve, the keying of pump etc.) of tubing system; And can adjust the simulation process operating parameter through the adjusting (opening of device degree size adjustment etc.) of tubing system, thereby realize the optimization of operating parameters research of technology, for the optimization of actual sewage factory production run provides the scientific research support.
The whisking appliance of first reaction tank among the present invention preferably adopts two-layer equation boats and ships type pusher propeller, makes into water and returned sluge or mixed solution short mix, and keeps mud maintenance suspension in the pond, and avoids excessively reoxygenation of surface; Grid agitator is preferably adopted in other three ponds, makes the into interior sewage short mix of Shui Hechi, guarantees that active sludge fully contacts with organic pollutant, the reinforcing mass transfer effect, and keep mud maintenance suspension in the pond, and avoid the excessive reoxygenation in surface.
Adopt mud scraper and perforation suction pipe as the mud discharging system among the present invention respectively,, avoid sludge retention time long to satisfy the requirement of the mud discharging under the various simulation process conditions.Wherein mud scraper preferably with shared stir shaft of whipping appts and support thereof; When the present invention simulated the AAO series of processes, the 4th reaction tank was as settling tank, and the aerating system of the 4th reaction tank, suction pipe and agitating vane are not worked; But installation cleaning shoe; The mud that is deposited at the bottom of the pond is scraped to sludge hopper, guaranteed the concentration and the activity of returned sluge and excess sludge, and avoid precipitating sludge alluvial overlong time and denitrification takes place and mud floats.The perforation suction pipe preferably adopts the feedwater pvc pipe, and the tube wall perforate evenly is laid at the bottom of the pond, with being deposited on that active sludge at the bottom of the pond is collected and with it discharging or backflow.
Second and third lays aerating system with four reaction tanks among the present invention, and aerated conduit is preferably laid by " rich " word, and oxygen is provided in mixed solution, guarantees that active sludge keeps suspending, and fully contacts with dissolved oxygen with organic pollutant.
Adopt respectively among the present invention and strain hydrophone and V-notch weir water outlet, to guarantee that supernatant is normally discharged the pond body under the various simulation process conditions.Wherein, straining hydrophone is used for when simulation SBR series of processes, as control device, in setting-up time, automatically supernatant in the pond being discharged reaction tank with valve switch.V-notch weir is used for when simulation AAO series of processes and UNITANK series of processes, the settling tank supernatant being discharged the pond body, and avoids deposition state in the pond is formed interference as far as possible.
The present invention can realize the simulation to AAO, SBR, UNITANK three big series of processes specifically comprising AAO, A through means such as equipment adjusting, valve switching and pipe connection
PO, A
NO, inversion A AO, UNITANK, detest technologies such as supporting UNITANK, SBR, CAST; And possess raw water quality, treatment scale, HRT ratio, mud quantity of reflux and the isoparametric regulatory function of mixed-liquor return amount, satisfy the requirement of various WWT action oriented research exploitations.
Description of drawings
Fig. 1 is a technological principle sketch of the present invention;
Fig. 2 arranges sketch for reaction tank body plane of the present invention;
Fig. 3 is a sludge system floor plan sketch of the present invention;
Fig. 4 is an aerating system floor plan sketch of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further explanation.
Shown in Fig. 1 ~ 4, the present invention mainly is made up of reaction tank body, tubing system, outlet system, aerating system and sludge system.The reaction tank body is made up of reaction tank A, B, C and D, is yi word pattern and arranges the shared pool wall in adjacent reaction pond, B, C, the adjacent pipe connection that passes through in D pond.The A pond is mainly simulated and is detested anoxic pond; 7 water outlets of drop funnel are adopted in the A pond; With the waterpower relation in cut-out A pond and downstream reaction pond, and can regulate A pond available depth and volume, thereby regulate the hydraulic detention time ratio in A pond and downstream reaction pond through the height that changes drop funnel 7.
And the switching of each simulation process mainly is adjusting (keying of gate valve, the keying of the pump etc.) realization through sewer system 1, sludge pipe system 2 and air, ducted systems 3 in the present embodiment.Simultaneously, the present invention realizes A pond water inlet and returned sluge or mixed solution short mix through whisking appliance 4,5,6, and keeps mud maintenance suspension in the pond, and avoids excessively reoxygenation of surface; Sewage in whisking appliance 13,14,15 short mix B, C, the water inlet of D pond and the pond is installed respectively, and is kept mud maintenance suspension in each pond.B, C, D pond can be respectively as Aerobic Pond and settling tanks according to the requirement of physical simulation technology, and micro-pore aeration system 20,21,22 aerations are adopted in each pond respectively during aeration; During as settling tank, each pond can select to bore a hole suction pipe 16,17,18 or mud scraper 19 during spoil disposal, each pond can be selected V-notch weir effluent trough 8,9 or strain hydrophone 10,11,12 during water outlet.
Each reaction tank is communicated with sewer line, sludge pipe and air line respectively, and the adjusting control through each pipeline is opened and closed can realize the simulation to various water technologies.
The situation of the various treatment process of physical simulation is following in the present embodiment:
(1) AAO series of processes
When simulating the AAO series of processes in the present embodiment, the A pond is for detesting anoxic pond, and B, C pond are Aerobic Pond, and the D pond is a settling tank.This technology realizes water inlet and returned sluge or mixed solution short mix by the water inlet of A pond through whisking appliance 4,5,6, and keeps mud maintenance suspension in the pond, and avoids excessively reoxygenation of surface, again from 7 water outlets of drop funnel, entering Aerobic Pond; After B, the water inlet of C pond, through sewage in water inlet of whisking appliance 13,14 short mix and the pond, and mud keeps suspending in the maintenance pond; B, C pond perforation suction pipe 16,17 are not worked; Two pond aerations adopt micro-pore aeration system 20,21, guarantee that oxygen is sufficient in the mixed solution, and sewage is after B, C pond aerobic treatment; Connecting pipe water outlet through between each pond gets into settling tank D; Remove D pond whisking appliance 15, perforation suction pipe 18, aerating system 22, mud scraper 19 is installed, make the mixed solution mud-water separation, final supernatant is discharged from V-notch weir effluent trough 9.
(2) UNTANK series of processes
When simulating the UNTANK series of processes in the present embodiment, adopt B, C, D pond dry run UNITANK series of processes (during analog part SBR deformation technique, the A pond can be used as anaerobic pond), adjacent pool is communicated with through pipeline, and is provided with water dispensing apparatus.B, C, D pond are separately installed with whisking appliance 13,15 and micro-pore aeration system 20,21,22; Perforation suction pipe 16,18 is installed in pond, two limits (B pond, D pond), and they are alternately as aeration tank and settling tank.Can control sewage through valve on the sewer system 1 and get into arbitrary reaction tank, system adopts water inlet, cycle alternate run mode continuously.The concrete cycle of operation comprises 6 stages:
1) sewage gets into pond, limit B, adopts whisking appliance 13 or micro-pore aeration system 20 to carry out aeration in the pond, and mixed solution gets into pond, limit D through middle pond C in the pond, and the D pond is through V-notch weir 9 drainings;
2) the B pond stops into water, continues aeration, and sewage gets into the C pond, and draining is continued in the D pond;
3) the B pond stops aeration, and is quiet heavy, and sewage continues to get into the C pond, and draining is continued in the D pond, and excess sludge is discharged through perforation suction pipe 18;
4) sewage gets into pond, limit D, adopts whisking appliance 15 or micro-pore aeration system 22 to carry out aeration in the pond, and mixed solution gets into the B pond through middle pond C, and the B pond is through the V-notch weir draining;
5) the D pond stops into water, continues aeration, and sewage gets into the C pond, and draining is continued in the B pond;
6) the D pond stops aeration, and is quiet heavy, and sewage continues to get into the C pond, and draining is continued in the B pond, and excess sludge is discharged through perforation suction pipe 16, finishes until draining, accomplishes a cycle of operation.Pond B adopts micro-pore aeration system 21 to carry out aeration all the time in the middle of in the whole cycle.(1)～(3) stage is just in time opposite with (4)～(6) stage operation scheme.
(3) SBR series of processes
When the present invention simulates the SBR series of processes, mainly adopt B, C, D pond dry run SBR technology (during analog part SBR deformation technique, the A pond can be used as anaerobic pond), 3 pond independent operatings are equipped with water dispensing apparatus and water-freeing arrangement.Whisking appliance 13,14,15 is installed in B, C, D pond respectively, micro-pore aeration system 20,21,22, perforation suction pipe 16,17,18 and strain hydrophone 10,11,12.Can control sewage through valve on the sewer system 1 and get into arbitrary reaction tank, system adopts water inlet, cycle alternate run mode continuously; Each reaction tank opens and closes water inlet, reaction, deposition, discharging and idle 5 operations that can realize on time and the space through whisking appliance, aerating system and outlet system, realizes WWT; Finally, handle back sewage and strain the hydrophone water outlet through each reaction tank respectively.
Claims (9)
1. a multi-functional sewage is handled pilot test system; Be used to simulate various water technologies, it is characterized in that, this system comprises the reaction tank body; It is made up of first reaction tank (A) that is word order, second reaction tank (B), the 3rd reaction tank (C) and the 4th reaction tank (D); Each reaction tank is communicated with sewer line, sludge pipe and air line respectively, wherein
Said first reaction tank (A) is used for simulation and detests anoxic pond, is provided with whisking appliance (4,5,6) in it, is used to realize mixing of this first reaction tank (A) water inlet and returned sluge or mixed solution;
Said second reaction tank (B), the 3rd reaction tank (C) and the 4th reaction tank (D) are respectively applied for as Aerobic Pond or settling tank, are separately installed with whisking appliance (13,14,15) in three reaction tanks, are respectively applied for to mix sewage in water inlet and the pond; And also be provided with V-notch weir effluent trough (8,9) in three each ponds of reaction tank or strain hydrophone (10,11,12) and be used for water outlet, be provided with aerating system (20,21,22) simultaneously in each pond and be used for aeration and/or be provided with perforation suction pipe (16,17,18) or mud scraper (19) is used for spoil disposal.
2. a kind of multi-functional sewage according to claim 1 is handled pilot test system; It is characterized in that; Said first reaction tank (A) adopts the water outlet of drop funnel (7), and regulates said first reaction tank (A) available depth and volume through the height that changes this drop funnel (7).
3. a kind of multi-functional sewage according to claim 1 and 2 is handled pilot test system, it is characterized in that the shared pool wall of adjacent two reaction tanks in said first reaction tank (A), second reaction tank (B), the 3rd reaction tank (C) and the 4th reaction tank (D).
4. handle pilot test system according to the described a kind of multi-functional sewage of one of claim 1-3, it is characterized in that, the aerated conduit of said aerating system is " rich " font and lays.
5. handle pilot test system according to the described a kind of multi-functional sewage of one of claim 1-4; It is characterized in that said perforation suction pipe (16,17,18) adopts pvc pipe, and the tube wall perforate; Evenly be laid at the bottom of the pond, be used for being deposited on that active sludge at the bottom of the pond is collected and with it discharging or backflow.
6. handle pilot test system according to the described a kind of multi-functional sewage of one of claim 1-5, it is characterized in that, said water technology comprises AAO series, SBR is serial and the UNITANK series of processes.
7. application rights requires the described multi-functional sewage processing of one of 1-6 pilot test system to carry out AAO series of processes mimic method, and it specifically comprises the steps:
At first; Intake by first reaction tank (A); Realize that through whisking appliance (4,5,6) wherein water inlet mixes with returned sluge or mixed solution; And mud keep to suspend in the maintenance pond, again from wherein drop funnel (7) water outlet, makes sewage get into said second reaction tank (B) and the 3rd reaction tank (C) to carry out aerobic treatment; After this second reaction tank (B) and the 3rd reaction tank (C) water inlet,, and utilize said aerating system (20,21) to carry out aeration through whisking appliance (13,14) mixing water inlet and said sewage separately; Sewage after this second reaction tank (B) and the 3rd reaction tank (C) carry out aerobic treatment; Get into the 4th reaction tank (D) and carry out precipitation process; Mud scraper (19) through wherein makes the mixed solution mud-water separation, and supernatant is discharged from V-notch weir effluent trough (9) wherein.
8. application rights requires the described multi-functional sewage processing of one of 1-6 pilot test system to carry out UNITANK series of processes mimic method, and it specifically comprises the steps:
(1) sewage gets into second reaction tank (B); Adopt whisking appliance (13) or aerating system (20) to carry out aeration; Mixed solution gets into the 4th reaction tank (D) in the pond behind the 3rd reaction tank (C), and in the 4th reaction tank (D) through said V-notch weir (9) draining;
(2) second reaction tanks (B) stop into water, continue aeration, and sewage gets into the 3rd reaction tank (C), and the 4th reaction tank (D) continues draining;
(3) second reaction tanks (B) stop aeration, and are quiet heavy, and sewage continues to get into the 3rd reaction tank (C), and the 4th reaction tank (D) continues draining, and excess sludge is discharged through perforation suction pipe (18) wherein;
(4) sewage gets into the 4th reaction tank (D), adopts whisking appliance (15) or aerating system (22) to carry out aeration, and mixed solution gets into second reaction tank (B) through the 3rd reaction tank (C), and passes through the V-notch weir draining at this second reaction tank (B);
(5) the 4th reaction tanks (D) stop into water, continue aeration, and sewage gets into the 3rd reaction tank (C), and this second reaction tank (B) continues draining;
(6) the 4th reaction tanks (D) stop aeration, and are quiet heavy, and sewage continues to get into the 3rd reaction tank (C), and this second reaction tank (B) continues draining, and excess sludge is discharged through perforation suction pipe (16) wherein, finishes until draining;
The simulation to the UNTANK series of processes can be realized in circular flow above-mentioned steps (1)-(6).
9. application rights requires the described multi-functional sewage processing of one of 1-6 pilot test system to carry out SBR series of processes mimic method; It specifically comprises: at first; Said second reaction tank (B), the 3rd reaction tank (C) and each pond of the 4th reaction tank (D) independently intake; Aerating system and the whisking appliance of each reaction tank through separately carries out aerated reaction then, and again after deposition is idle, sewage is strained hydrophone (10,11,12) water outlet through each reaction tank respectively.
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| CN105621614A (en) * | 2016-04-01 | 2016-06-01 | 中新苏州工业园区环保技术有限公司 | Multipurpose integrated biological treatment tank |
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| CN106904742A (en) * | 2017-04-01 | 2017-06-30 | 尚川（北京）水务有限公司 | It is a kind of small-sized without water decanter SBR integrated effluent disposal systems |
| CN108569762A (en) * | 2018-05-09 | 2018-09-25 | 江苏大楚环保设备有限公司 | A kind of multifunctional all domestic sewage treatment device |
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| CN108862560A (en) * | 2018-07-25 | 2018-11-23 | 苏州市排水有限公司 | A kind of multi-mode integrated sewage treating apparatus |
| CN112723649A (en) * | 2020-11-19 | 2021-04-30 | 江苏农林职业技术学院 | Virtual debugging operation method for sewage treatment plant |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621614A (en) * | 2016-04-01 | 2016-06-01 | 中新苏州工业园区环保技术有限公司 | Multipurpose integrated biological treatment tank |
| CN106186532A (en) * | 2016-08-08 | 2016-12-07 | 浙江荣凯科技发展股份有限公司 | The process technique of sewage in a kind of synthesis 2 chlorine apellagrins |
| CN106396057A (en) * | 2016-10-28 | 2017-02-15 | 武汉工程大学 | Multifunctional integrated sewage treatment equipment |
| CN106396057B (en) * | 2016-10-28 | 2023-09-26 | 武汉工程大学 | Multifunctional integrated sewage treatment equipment |
| CN106904742A (en) * | 2017-04-01 | 2017-06-30 | 尚川（北京）水务有限公司 | It is a kind of small-sized without water decanter SBR integrated effluent disposal systems |
| CN108569762A (en) * | 2018-05-09 | 2018-09-25 | 江苏大楚环保设备有限公司 | A kind of multifunctional all domestic sewage treatment device |
| CN108862560A (en) * | 2018-07-25 | 2018-11-23 | 苏州市排水有限公司 | A kind of multi-mode integrated sewage treating apparatus |
| CN108862560B (en) * | 2018-07-25 | 2024-02-13 | 苏州市排水有限公司 | Multi-mode integrated sewage treatment device |
| CN108793409A (en) * | 2018-08-29 | 2018-11-13 | 陕西朗正环保科技有限公司 | A kind of sewage-treatment plant suitable for country sewage changes in flow rate |
| CN108793409B (en) * | 2018-08-29 | 2023-12-29 | 中化学朗正环保科技有限公司 | Sewage treatment device suitable for rural sewage flow change |
| CN112723649A (en) * | 2020-11-19 | 2021-04-30 | 江苏农林职业技术学院 | Virtual debugging operation method for sewage treatment plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102701447B (en) | 2014-08-27 |
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