CN204385028U - A kind of waste disposal plant - Google Patents

A kind of waste disposal plant Download PDF

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Publication number
CN204385028U
CN204385028U CN201420825545.1U CN201420825545U CN204385028U CN 204385028 U CN204385028 U CN 204385028U CN 201420825545 U CN201420825545 U CN 201420825545U CN 204385028 U CN204385028 U CN 204385028U
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pipeline
membrane module
tank
waste disposal
disposal plant
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CN201420825545.1U
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裴巧定
陈秀清
裴蕾
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CHONGQING KUNQUAN ENVIRONMENTAL ENGINEERING CO., LTD.
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CHONGQING CHENGLU ENVIRONMENTAL ENGINEERING Co Ltd
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Abstract

The utility model embodiment provides a kind of waste disposal plant, and waste disposal plant is: integrated effluent disposal system comprises anoxic pond, Aerobic Pond, settling tank and run-off, and membrane module comprises putamina and film silk, and film silk is vertically arranged in putamina inside; Anoxic pond is connected with Aerobic Pond, and Aerobic Pond and settling tank share common sidewalls overflow head piece, settling tank and run-off share common sidewalls have overflow port; Septic tank connects equalizing tank by pipeline, and one end of the first pipeline is stretched in equalizing tank, and the other end connects anoxic pond, and one end of second pipe is stretched in run-off, the other end junctional membrane assembly, and membrane module is connected with filtered water tank by the 3rd pipeline.Advantage is that processing power is high, and the sewage after process is far above national grade one discharge standard.

Description

A kind of waste disposal plant
Technical field
The utility model relates to sewage treatment area, particularly relates to a kind of waste disposal plant.
Background technology
China is a lack of water country, and sewage disposal and reuse are the effective measure developing water resources.Reusing sewage be by municipal effluent, industrial sewage by after the device processes such as membrane bioreactor, use it for greening, flushing, supplement and view and admire the non-objects of drinking such as water body, and cleaning water is used for the purposes of drinking contour water quality requirement.Municipal effluent, industrial sewage can obtain nearby, can remove long distance water transfer from, and realize processing nearby realizing making full use of of water resources, sewage processes through nearby simultaneously, also can prevent sewage from long distance delivery process, causing effluent seepage, cause polluted underground water source.Reusing sewage in the world the area of many lacks of water extensively adopt, be considered to the most practical technique of 21 century sewage disposal.
China per capita water resources owning amount is only 2250m 3/ people. year, 1/4 of not enough world average level.In China more than 600 city, have more than 300 seat urban water shortages, wherein city of severe water shortage has more than 100, nearly 6,000,000,000 m of year water deficit 3, every year because lack of water causes financial loss about 2,000 hundred million yuans.North China's water resources ownership per capita only has 250-480m 3/ people. in year, lower than 1/5 of national per capita share, all cities in this area nearly all face water shortage problem.Therefore reusing sewage is one of important measures alleviating North China Plain water crisis.
Nowadays, conventional sewage disposal technology is biological activated sludge sewage water technology, and its sewage disposal device chief component is: 1. hydrolysis acidification pool; 2. contact-oxidation pool; 3. contamination precipitation pond; 4. disinfect; 5. sludge aerobic digester.Namely use Biological Contact Oxidation Process filling filler in biological reaction tank, the whole filler of sewage submergence of oxygenation, and flow through filler with certain flow velocity.Filler is covered with microorganism, and sewage extensively contacts with microorganism, and under the metabolic effect of microorganism, dirty organic pollutants is removed, and sewage is purified.Finally, the waste water processed enters biological contact oxidization treatment system and mixes laggard row relax with sanitary sewage, qualified discharge after chlorine disinfectant.
But, the comprehensive clearance of this sewage disposal technology pollutent is not high, delivery turbidity after sewage disposal is also higher, the last operation of carrying out precipitation for a long time in settling tank that all needs could be up to standard, so both have impact on sewage treating efficiency and also virtually extend treatment cycle, add processing cost.
In view of more than, special this utility model is proposed.
Utility model content
The purpose of this utility model is to provide a kind of waste disposal plant, can harm humans is healthy and prior art sewage treatment capacity is not high technical problem containing a large amount of precipitated impurities in the tap water pipe network that exists in prior art to solve.
The waste disposal plant that the utility model embodiment provides, comprise: septic tank, equalizing tank, integrated effluent disposal system, filtered water tank, membrane module, the first pipeline, second pipe and the 3rd pipeline, integrated effluent disposal system comprises anoxic pond, Aerobic Pond, settling tank and run-off, membrane module comprises putamina and film silk, and film silk is vertically arranged in putamina inside;
Anoxic pond is connected by pipeline with Aerobic Pond, and the sidewall that Aerobic Pond and settling tank share is provided with the first overflow port, and the sidewall that settling tank and run-off share is provided with the second overflow port;
Septic tank connects equalizing tank by pipeline, one end of first pipeline is stretched in equalizing tank, the anoxic pond in the other end connecting integration Sewage treatment systems, and one end of second pipe is stretched in run-off, the other end junctional membrane assembly, membrane module is connected with filtered water tank by the 3rd pipeline.
Preferably, also comprise the first transferpump, the first transferpump is arranged at the bottom in equalizing tank, then one end of the first pipeline connects the first transferpump, the anoxic pond in the other end connecting integration Sewage treatment systems.
Preferably, also comprise the second transferpump, the second transferpump is arranged at the bottom in run-off, then one end of second pipe connects the second transferpump, the lower sidewall of the putamina in the other end junctional membrane assembly, the side wall upper part of the putamina in membrane module is connected with filtered water tank by the 3rd pipeline.
Preferably, also comprise air compressor machine, air compressor machine is connected with the bottom of putamina by pipeline.
Preferably, also comprise membranization cleaning of evaporator, the lower sidewall of membranization cleaning of evaporator is communicated with second pipe by pipeline, and the side wall upper part of membranization cleaning of evaporator is by pipeline and the 3rd pipeline communication.
Preferably, also comprise snubber, snubber is arranged at the inside of settling tank, and snubber comprises transverse tube, vertical tube and hydraucone, and one end of transverse tube is connected with the first overflow port, and the other end of transverse tube is connected with the top of vertical tube, and hydraucone is arranged at the bottom of vertical tube.
Preferably, membrane module is multiple, in parallel between each membrane module.
Preferably, the material of film silk is tubular fibre.
The utility model embodiment still provides a kind of method that waste disposal plant is disposed of sewage, and comprises the steps:
Sewage enters membrane module and enters in filtered water tank after the process of film silk after septic tank, equalizing tank, integrated effluent disposal system process, and the air in air compressor machine enters in membrane module the foreign material purged on film silk.
Preferably, also comprise the steps: to carry out matting to film silk: the scavenging solution in membranization cleaning of evaporator enters after top is again gone out from membrane module bottom and returns membranization cleaning of evaporator.
The sewage water treatment method that the utility model embodiment provides and treatment unit, membrane separation technique and biotechnology are organically combined, membrane module is utilized the active sludge in biochemical reaction tank and larger molecular organics matter to be retained, hydraulic detention time (HRT) and sludge retention time (SRT) can control respectively, and the material of difficult degradation constantly reacts, degrades in membrane module reactor.On the one hand, film silk has retained the microorganism in reaction tank, and the activated sludge concentration in pond is increased greatly, and the biochemical reaction of degradation of sewage makes it to carry out more thorough more rapidly; On the other hand, due to the high filtering precision of film, ensure that water outlet is as clear as crystal thus do not need in flow process to add second pond.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the waste disposal plant that Fig. 1 provides for the utility model embodiment;
The structural representation of the waste disposal plant that Fig. 2 provides for the another embodiment of the utility model;
Reference numeral:
1-septic tank; 2-equalizing tank;
3-integrated effluent disposal system; 4-air compressor machine;
5-membrane module; 6-filtered water tank;
7-membranization cleaning of evaporator; 8-first transferpump;
9-second transferpump; 10-anoxic pond;
11-Aerobic Pond; 12-settling tank;
13-run-off; 14-snubber;
15-first pipeline; 16-second pipe;
17-the 3rd pipeline.
Embodiment
Be clearly and completely described the technical solution of the utility model below in conjunction with accompanying drawing, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, particular case the concrete meaning of above-mentioned term in the utility model can be understood.
The waste disposal plant that the utility model embodiment provides, as shown in Figure 1, comprise: septic tank 1, equalizing tank 2, integrated effluent disposal system 3, filtered water tank 6, membrane module 5, first pipeline 15, second pipe 16 and the 3rd pipeline 17, integrated effluent disposal system 3 comprises anoxic pond 10, Aerobic Pond 11, settling tank 12 and run-off 13, membrane module comprises putamina and film silk, and film silk is vertically arranged in putamina inside;
Anoxic pond 10 is connected by pipeline with Aerobic Pond 11, the sidewall that Aerobic Pond 11 and settling tank 12 share is provided with the first overflow port, the sidewall that settling tank and run-off share is provided with the second overflow port;
Septic tank 1 connects equalizing tank 2 by pipeline, one end of first pipeline 15 is stretched in equalizing tank 2, anoxic pond 10 in the other end connecting integration Sewage treatment systems 3, one end of second pipe 16 is stretched in run-off 13, the other end junctional membrane assembly 5, membrane module 5 is connected with filtered water tank 6 by the 3rd pipeline 17.
The waste disposal plant that the utility model embodiment provides, membrane separation technique and biotechnology are organically combined, membrane module is utilized the active sludge in biochemical reaction tank and larger molecular organics matter to be retained, hydraulic detention time (HRT) and sludge retention time (SRT) can control respectively, and the material of difficult degradation constantly reacts, degrades in membrane module reactor.On the one hand, film silk has retained the microorganism in reaction tank, and the activated sludge concentration in pond is increased greatly, and the biochemical reaction of degradation of sewage makes it to carry out more thorough more rapidly; On the other hand, due to the high filtering precision of film, ensure that water outlet is as clear as crystal thus do not need in flow process to add second pond.And the film in the utility model membrane module is thread, film can be reduced like this because life-time service is by the probability of foreign material shutoff, and on film silk also can settled organism active sludge to improve the filtration efficiency of sewage further.
The workflow of the waste disposal plant of the utility model embodiment is as follows: sewage is after septic tank preliminary treatment, then through equalizing tank, equalizing tank can play buffering effect, store a certain amount of mud mixture, ensure every batch of cycle of operation of carrying out sewage disposal, then enter integrated effluent disposal system again through the sewage of equalizing tank to process, it is about 3h that anoxic pond generally designs the residence time, sewage enters into Aerobic Pond by pipeline self after anaerobic treatment, carry out control by PLC system and open aerator oxygenation, after sewage after Air Exposure is precipitated by settling tank, filtered water tank is entered enter membrane module membrane separation from run-off after, dope then returns in anoxic pond.
Preferably; also comprise crushed rack bar screen; it is arranged in septic tank; crush type grid is made up of primarily of grid grizzly bar, rotary knife cutter pulverizer; solid sundries is fixed grizzly bar by grid and is retained; solid dirt is cut into fine particle by the cutting blade rotated, and with sewage inflow treatment process below, effectively prevents the blocking of the pump housing and protects water pump impeller.
Preferably, as shown in Figure 2, also comprise the first transferpump 8, first transferpump 8 is arranged at the bottom in equalizing tank 2, then one end of the first pipeline 15 connects the first transferpump 8, anoxic pond 10, first transferpump in the other end connecting integration Sewage treatment systems 3 is used for sewage to be promoted by equalizing tank to enter in integrated effluent disposal system.
Preferably, also comprise the second transferpump 9, second transferpump 9 is arranged at the bottom in run-off 13, then one end of second pipe 16 connects the second transferpump 9, the lower sidewall of the putamina in the other end junctional membrane assembly, the side wall upper part of the putamina in membrane module is connected with filtered water tank 6 by the 3rd pipeline 17, and the second transferpump 9 provides power to sewage, is sent in membrane module and carries out further sewage disposal.
Wherein, equalizing tank also serves the effect of regulating pondage and water quality, extend the stop frequency of transferpump, be provided with water level control system in equalizing tank, prescribe a time limit when water level reaches the upper of setting, the first transferpump starts beginning lifting sewage automatically, on the contrary when water level arrives low level, transferpump stops automatically, thus realizes sewage transport pump and water level height automatic start-stop, and the equalizing tank design residence time is generally at more than 6h.
Preferably, also comprise air compressor machine 4, air compressor machine is connected with the bottom of putamina by pipeline, while disposing of sewage, and the impurity that reverse blow film silk adheres to.Water in filtered water tank also can carry out back flushing to membrane module, back-flushing outwards recoils by inside film, sewage returns equalizing tank, and the sewage disposal operation of membrane module and backwash operation all can be controlled to realize automatic or manual by mounted valve or PLC control system on pipeline.
Preferably, also comprise membranization cleaning of evaporator 7, the lower sidewall of membranization cleaning of evaporator is communicated with second pipe by pipeline, and the side wall upper part of membranization cleaning of evaporator is by pipeline and the 3rd pipeline communication.When membrane module needs chemical cleaning operation, can close wastewater treatment process, startupization washing procedure carries out matting to membrane module.
Preferably, also comprise snubber 14, snubber is arranged at the inside of settling tank, and snubber comprises transverse tube, vertical tube and hydraucone, and one end of transverse tube is connected with the first overflow port, the other end of transverse tube is connected with the top of vertical tube, hydraucone is arranged at the bottom of vertical tube, enters settling tank be stably preferably provided with bell-mouthed snubber to make sewage, reduces the flow velocity of sewage, in order to avoid the foreign material in effluent flow rate ambassador sewage suspend more muddy, reduce scrubbing efficiency.
Preferably, membrane module is multiple, in parallel between each membrane module, in order to the filtration capacity of reinforcing membrane assembly, also can arrange multiple membrane module parallel connection simultaneously and carry out work.
Preferably, the number of described membrane module is 2-3.
Preferably, the material of film silk is tubular fibre, the fiber of high hollow structure decreases the weight of 20% compared with general fibre, and a large amount of still air can be comprised, make its fabric thermal property while light but improve 65% than common homogeneity fabric, and when being regarded material of preparing, strainability is also better.
Preferably, the filler for tangling mud is filled with in anoxic pond and Aerobic Pond.
The workflow of the waste disposal plant of the another embodiment of the utility model is as follows:
Sewage is after septic tank preliminary treatment, then adopt the first transferpump to promote to enter integrated effluent disposal system through the sewage of equalizing tank and process, sewage enters into Aerobic Pond by pipeline self after anaerobic treatment, carry out control by PLC system and open aerator oxygenation, after sewage after Air Exposure is precipitated by settling tank, enter filtered water tank after adopting the second transferpump to send into membrane module membrane separation from run-off, dope then returns in anoxic pond.In sewage treatment process, the wind reverse blow in air compressor machine is to remove the impurity that film silk adheres to.When film silk processing power declines, then need counter clean and change wash operation, stop main flow, change anti-cleaning into or change mold cleaning formula, be adopt the water in filtered water tank also can carry out back flushing to membrane module during back flushing, changing when washing operation is to realize matting by the chemical substance counterflush film silk in membranization cleaning of evaporator.
The utility model embodiment still provides a kind of method that waste disposal plant is disposed of sewage, and comprises the steps:
Sewage enters membrane module and enters in filtered water tank after the process of film silk after septic tank, equalizing tank, integrated effluent disposal system process, and the air in air compressor machine enters in membrane module the foreign material purged on film silk.
Preferably, also comprise the steps: to carry out matting to film silk: the scavenging solution in membranization cleaning of evaporator enters after top is again gone out from membrane module bottom and returns membranization cleaning of evaporator.
The sewage water treatment method of the utility model embodiment, method is simple, easy to operate, by the sewage of sewage water treatment method process of the present utility model far above national sewage discharge primary standard.
Test example:
By the sewage after the process of the utility model embodiment, the indices of its water quality is detected, the indices of the sewage before entering waste disposal plant is as shown in table 1 below, the indices of the sewage after process is as shown in table 2, visible all higher than the primary standard in " integrated wastewater discharge standard " (GB/T8978-2002), " miscellaneous domestic water quality standard " (CJ/T49-1999) standard and " urban sewage reutilization urban reclaimed water water quality standard " (GB/T18921-2002) standard, and other sewage treatmentmethods of the prior art can only reach the emission standard of country reluctantly.
Table 1 influent quality parameter list
Project COD tr BOD 5 SS Treatment media
Standard <400mg/l <250mg/l <200mg/l Sanitary sewage
Project Vegetable and animals oils NH 3-N PH Colourity
Standard ≤40mg/L 35~40mg/L 6~9 <100
Table 2 effluent quality parameter list
Project COD tr BOD 5 SS NH 3-N pH
Standard <30mg/l <10mg/l <2mg/l <2mg/l 6~9
Project Petroleum-type Colourity Vegetable and animals oils Phosphoric acid salt (P meter) LAS
Standard <0.5mg/l <1 <0.2mg/l <0.02mg/l <1.0mg/l
The waste disposal plant of the utility model embodiment and treatment process are on the basis fully absorbing and digest domestic and international similar modern technique, specially for away from urban sewage pipe network, the area of sewage work and field work drill crew, oil recovery (gas) station, Gas Purification Factory and a kind of integration designed should not be built again without the need to the sewage treatment unit of human users in locality, be the New Wastewater Treatment Technology art that membrane separation technique and biotechnology are organically combined, therefore also can claim membrane separation activated sludge process.Utilize modern supermicro filtration membrane technology to combine with traditional activated sludge process, create a kind of brand-new wastewater processing technology.Membrane bioreactor replaces traditional second pond with supermicro filtration membrane unit, and all suspended substances and colloid are all retained by membrane sepn, and the settleability of mud can not have influence on effluent quality, achieves the separation completely of muddy water thoroughly.The appearance of film unit, adds the concentration of active sludge in Aerobic Pond, improves biodegradable speed, reduces F/M ratio, and effectively decreases the generation of excess sludge.The COD value of membrane module bio-reactor water outlet greatly reduces than traditional activated sludge process, and the comprehensive clearance of pollutent can reach more than 90%, and the turbidity of water outlet is less than 1NTU usually.Because effluent quality is excellent, by the sewage after MBS process, can direct reuse to fields such as green area irrigation, lavatory flushing, environmental sanitation water, saved water resources greatly.MBS water outlet, through further advanced treatment, also can be applicable to domestic water, water of productive use, effectively realizes the resource utilization of sewage, reaches the object of energy-saving and emission-reduction.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.

Claims (10)

1. a waste disposal plant, it is characterized in that, comprise: septic tank, equalizing tank, integrated effluent disposal system, filtered water tank, membrane module, the first pipeline, second pipe and the 3rd pipeline, described integrated effluent disposal system comprises anoxic pond, Aerobic Pond, settling tank and run-off, described membrane module comprises putamina and film silk, and it is inner that described film silk is vertically arranged in described putamina;
Described anoxic pond is connected by pipeline with described Aerobic Pond, and the sidewall that described Aerobic Pond and described settling tank share is provided with the first overflow port, and the sidewall that described settling tank and described run-off share is provided with the second overflow port;
Described septic tank connects described equalizing tank by pipeline, one end of described first pipeline is stretched in described equalizing tank, the other end connects the anoxic pond in described integrated effluent disposal system, one end of described second pipe is stretched in described run-off, the other end connects described membrane module, and described membrane module is connected with described filtered water tank by the 3rd pipeline.
2. a kind of waste disposal plant according to claim 1, it is characterized in that, also comprise the first transferpump, described first transferpump is arranged at the bottom in described equalizing tank, then one end of described first pipeline connects described first transferpump, and the other end connects the anoxic pond in described integrated effluent disposal system.
3. a kind of waste disposal plant according to claim 1, it is characterized in that, also comprise the second transferpump, described second transferpump is arranged at the bottom in described run-off, then one end of described second pipe connects described second transferpump, the other end connects the lower sidewall of the putamina in described membrane module, and the side wall upper part of the putamina in described membrane module is connected with described filtered water tank by the 3rd pipeline.
4. a kind of waste disposal plant according to claim 1, is characterized in that, also comprise air compressor machine, and described air compressor machine is connected by the bottom of pipeline with described putamina.
5. a kind of waste disposal plant according to claim 1, it is characterized in that, also comprise membranization cleaning of evaporator, the lower sidewall of described membranization cleaning of evaporator is communicated with described second pipe by pipeline, and the side wall upper part of described membranization cleaning of evaporator is by pipeline and described 3rd pipeline communication.
6. a kind of waste disposal plant according to claim 1, it is characterized in that, also comprise snubber, described snubber is arranged at the inside of described settling tank, described snubber comprises transverse tube, vertical tube and hydraucone, one end of described transverse tube is connected with described first overflow port, and the other end of described transverse tube is connected with the top of described vertical tube, and described hydraucone is arranged at the bottom of described vertical tube.
7. a kind of waste disposal plant according to claim 1, is characterized in that, described membrane module is multiple, in parallel between membrane module described in each.
8. a kind of waste disposal plant according to claim 1, is characterized in that, the material of described film silk is tubular fibre.
9. a kind of waste disposal plant according to claim 7, is characterized in that, the number of described membrane module is 2-3.
10. a kind of waste disposal plant according to claim 1, is filled with the filler for tangling mud in described anoxic pond and described Aerobic Pond.
CN201420825545.1U 2014-12-23 2014-12-23 A kind of waste disposal plant Active CN204385028U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104402176A (en) * 2014-12-23 2015-03-11 重庆澄露环境工程有限公司 Sewage treatment method and treatment device
CN105435504A (en) * 2015-12-02 2016-03-30 王刚 Microparticle separator for water treatment
CN105585230A (en) * 2016-03-14 2016-05-18 宜兴市绿亚环境工程有限公司 Sewage treatment device
CN107381962A (en) * 2017-08-25 2017-11-24 四川奥恒环保科技有限公司 Efficient domestic sewage treatment device
CN107739132A (en) * 2017-11-15 2018-02-27 北京泰昌科睿环保科技有限公司 A kind of sanitary sewage self-circulation type integrated treatment unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104402176A (en) * 2014-12-23 2015-03-11 重庆澄露环境工程有限公司 Sewage treatment method and treatment device
CN105435504A (en) * 2015-12-02 2016-03-30 王刚 Microparticle separator for water treatment
CN105585230A (en) * 2016-03-14 2016-05-18 宜兴市绿亚环境工程有限公司 Sewage treatment device
CN107381962A (en) * 2017-08-25 2017-11-24 四川奥恒环保科技有限公司 Efficient domestic sewage treatment device
CN107739132A (en) * 2017-11-15 2018-02-27 北京泰昌科睿环保科技有限公司 A kind of sanitary sewage self-circulation type integrated treatment unit

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Address after: 400000 Chongqing Jiulongpo Branch Road, No. 4 of No. 21-5

Patentee after: CHONGQING KUNQUAN ENVIRONMENTAL ENGINEERING CO., LTD.

Address before: 400000 Chongqing Jiulongpo Branch Road, No. 4 of No. 21-5

Patentee before: CHONGQING CHENGLU ENVIRONMENTAL ENGINEERING CO., LTD.