CN113480036A - Energy-concerving and environment-protective formula sewage treatment device - Google Patents

Energy-concerving and environment-protective formula sewage treatment device Download PDF

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Publication number
CN113480036A
CN113480036A CN202110797982.1A CN202110797982A CN113480036A CN 113480036 A CN113480036 A CN 113480036A CN 202110797982 A CN202110797982 A CN 202110797982A CN 113480036 A CN113480036 A CN 113480036A
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CN
China
Prior art keywords
chamber
mixing chamber
sewage treatment
environment
energy
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110797982.1A
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Chinese (zh)
Inventor
王富军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Fuyilong Environmental Protection Equipment Co ltd
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Suzhou Fuyilong Environmental Protection Equipment Co ltd
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Priority to CN202110797982.1A priority Critical patent/CN113480036A/en
Publication of CN113480036A publication Critical patent/CN113480036A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281Installations for water purification using chemical agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/009Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/20Prevention of biofouling

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physical Water Treatments (AREA)

Abstract

The invention discloses energy-saving and environment-friendly sewage treatment equipment, which comprises a mixing chamber, a settling chamber and a purifying chamber which are sequentially arranged from left to right, wherein a water inlet pipe is communicated outside the mixing chamber, a water outlet pipe is communicated outside the purifying chamber, and a first water pump and a second water pump are respectively arranged inside the mixing chamber and the settling chamber, wherein: the outer side wall of the mixing chamber is provided with a dosing device for adding a sewage treatment agent into the mixing chamber, and a stirring rod is arranged in the mixing chamber; the top of the outer side of the settling chamber is provided with a solar panel for supplying power to the whole equipment; a plurality of layers of sieve plates are arranged in the purification chamber at intervals, and a sterilizer is arranged on the inner wall of the purification chamber below the sieve plates; the front end of the water inlet pipe is provided with a primary filtering device. According to the energy-saving and environment-friendly sewage treatment equipment, the sewage is distributed and treated step by step through the mixing chamber, the settling chamber and the purifying chamber, the working efficiency of sewage treatment is greatly improved, the sewage treatment effect is effectively improved, the water resource is recycled, and the utilization rate of the water resource is further improved.

Description

Energy-concerving and environment-protective formula sewage treatment device
Technical Field
The invention relates to the technical field of purification equipment, in particular to energy-saving and environment-friendly sewage treatment equipment.
Background
The sewage treatment equipment is an industrial equipment which can effectively treat domestic sewage, industrial wastewater and the like, prevents sewage and pollutants from directly flowing into a water area, and has important significance for improving ecological environment, promoting urban grade and promoting economic development. The sewage treatment mode commonly used at present is mostly physical sedimentation method and chemical sedimentation method, and there is the stirring inhomogeneous in sewage treatment's process in this type of treatment mode, big, the sewage treatment inefficiency defect simultaneously to the separation degree of difficulty of impurity and mud in the sewage, in addition, when meetting the condition that uses sewage treatment device in comparatively remote place, lets equipment switch on comparatively difficult, inconvenient people's use.
Disclosure of Invention
The invention aims to provide an energy-saving and environment-friendly sewage treatment device to solve the problems.
In order to achieve the above object, the present invention employs the following:
the utility model provides an energy-concerving and environment-protective formula sewage treatment device, includes mixing chamber, drip chamber, the clean room that sets gradually from a left side to the right side, and the outer logical inlet tube that has of mixing chamber, the outer logical outlet pipe that has of clean room, the inside of mixing chamber, drip chamber is equipped with water pump one, water pump two respectively, and water pump one is arranged in taking out the liquid in the mixing chamber to the drip chamber, and water pump two is arranged in taking out the liquid in the drip chamber to the clean room, wherein:
the outer side wall of the mixing chamber is provided with a dosing device for adding a sewage treatment agent into the mixing chamber, and a stirring rod is arranged in the mixing chamber;
the top of the outer side of the settling chamber is provided with a solar panel for supplying power to the whole equipment, and the interior of the settling chamber is divided into a left chamber and a right chamber by a filter plate;
multiple layers of sieve plates are arranged in the purification chamber at intervals, filter holes are uniformly distributed on each layer of sieve plate, the diameters of the filter holes on the sieve plates from top to bottom are gradually reduced, and a sterilizer is arranged on the inner wall of the purification chamber below the sieve plates;
the front end of the water inlet pipe is movably provided with a primary filtering device.
Preferably, the front end of the water inlet pipe is provided with a base communicated with the water inlet pipe, the base is connected with a primary filtering device, the primary filtering device comprises a motor I, a base station, a supporting frame and a primary filtering plate, the supporting frame is rotatably provided with an auxiliary rod in an L-shaped structure, and the tail end of the auxiliary rod is connected to the primary filtering plate; the base station is provided with a rotating shaft perpendicular to an output shaft of the first motor, the output shaft of the first motor is provided with a first gear, the rotating shaft is provided with a second gear meshed with the first gear for transmission, the other end of the rotating shaft is connected with a first rotating arm, the first rotating arm is hinged with a first connecting rod, the other end of the first connecting rod is hinged with a support arm, and the other end of the support arm is hinged with the front end of the auxiliary rod.
Preferably, the top of the settling chamber is provided with a rotatable platform, the solar panel is fixedly arranged at the upper end of the platform, an extension arm is arranged on the side portion of the platform, the end portion of the extension arm is hinged to a rod body, the top of the settling chamber is further provided with a second motor, an output shaft of the second motor is connected with a second rotating arm, the second rotating arm is hinged to a second connecting rod, the other end of the second connecting rod is connected to the rod body, and a spring is arranged between the front end of the rod body and the middle portion of the extension arm.
Preferably, the top of the mixing chamber is provided with a third motor, an output shaft of the third motor is connected with a stirring rod in the mixing chamber, and the stirring rod is provided with a plurality of groups of short rods which are staggered left and right.
Preferably, the dosing device comprises a medicine storage groove arranged on the outer side wall of the mixing chamber, and a dosing pump is connected to the medicine storage groove.
Preferably, a bottom supporting plate in a V-shaped structure is arranged between the filter plate and the inner wall of the settling chamber.
Preferably, a plurality of filtering holes are uniformly distributed on the surface of the filtering plate.
Preferably, the heights of the mixing chamber, the settling chamber and the purifying chamber are gradually increased, and the height of the first water pump is lower than that of the second water pump.
Compared with the prior art, the invention has the beneficial effects that: by arranging the solar panel, certain electric energy can be provided for equipment placed outdoors, the energy saving performance and the convenience of the equipment are improved, and the practicability of the solar panel is also improved; the mixing chamber can be used to accelerate the absorption and settlement efficiency of sewage treatment agent to the mud in the sewage, the drip chamber can be used to further strengthen the sedimentation treatment to the impurity in the sewage and mud, the clean room mainly carries out the purification treatment that disinfects to the microorganism in the sewage, through the mixing chamber, drip chamber and clean room carry out the distributed processing step by step to sewage, sewage treatment's work efficiency has been accelerated greatly, the sewage treatment effect has been improved effectively, the reuse to the water resource has been realized, and then the utilization ratio of water resource has been improved.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of an energy-saving and environment-friendly sewage treatment device of the present invention;
FIG. 2 is a schematic sectional view of an energy-saving and environment-friendly sewage treatment plant according to the present invention;
FIG. 3 is a schematic view of the structure of a primary filter unit according to an embodiment of the present invention;
FIG. 4 is a schematic view of a solar panel mounting structure according to an embodiment of the present invention;
in the figures, the various reference numbers are:
10-mixing chamber, 20-settling chamber, 30-purifying chamber, 101-water inlet pipe, 102-first water pump, 103-medicine storage tank, 104-medicine feeding pump, 105-stirring rod, 106-base, 107-first motor, 108-base, 109-support frame, 110-first filter plate, 111-auxiliary rod, 112-rotating shaft, 113-first gear, 114-second gear, 115-first rotating arm, 116-first connecting rod, 117-support arm, 118-third motor, 119-short rod, 201-second water pump, 202-solar panel, 203-filter plate, 204-platform, 205-extension arm, 206-rod body, 207-second motor, 208-second rotating arm, 209-second connecting rod, 210-spring, 211-bottom support plate, 301-water outlet pipe, 302-sieve plate, 303-filtering hole and 304-sterilizer.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
As shown in fig. 1 and fig. 2, the energy-saving and environment-friendly sewage treatment equipment according to the embodiment of the present invention includes a mixing chamber 10, a settling chamber 20, and a purifying chamber 30 sequentially arranged from left to right, a water inlet pipe 101 is communicated outside the mixing chamber 10, a water outlet pipe 301 is communicated outside the purifying chamber 30, a first water pump 102 and a second water pump 201 are respectively arranged inside the mixing chamber 10 and the settling chamber 20, the first water pump 102 is used for pumping liquid in the mixing chamber 10 into the settling chamber 20, and the second water pump 201 is used for pumping liquid in the settling chamber 20 into the purifying chamber 30, wherein: a dosing device for adding a sewage treatment agent into the mixing chamber is arranged on the outer side wall of the mixing chamber 10, and a stirring rod 105 is arranged inside the mixing chamber 10; the top of the outer side of the settling chamber 20 is provided with a solar panel 202 for supplying power to the whole equipment, and the interior of the settling chamber 20 is divided into a left chamber and a right chamber by a filter plate 203; a plurality of layers of sieve plates 302 are arranged in the purification chamber 30 at intervals, filtering holes 303 which are uniformly distributed are arranged on each layer of sieve plate 302, the diameters of the filtering holes on the sieve plate from top to bottom are gradually reduced, and a sterilizer 304 is arranged on the inner wall of the purification chamber below the sieve plate; the front end of the water inlet pipe is movably provided with a primary filtering device.
In this embodiment, as shown in fig. 3 in detail, a base 106 communicating with the inlet pipe 101 is disposed at the front end of the inlet pipe 101, the base is connected to a primary filtering device, the primary filtering device includes a first motor 107, a base 108, a supporting frame 109 and a primary filtering plate 110, an auxiliary rod 111 having an L-shaped structure is rotatably disposed on the supporting frame 109, and the end of the auxiliary rod 111 is connected to the primary filtering plate 110; the base 108 is provided with a rotating shaft 112 perpendicular to the output shaft of the first motor 107, the output shaft of the first motor 107 is provided with a first gear 113, the rotating shaft 112 is provided with a second gear 114 in meshing transmission with the first gear 113, the other end of the rotating shaft 112 is connected with a first rotating arm 115, the first rotating arm 115 is hinged with a first connecting rod 116, the other end of the first connecting rod 116 is hinged with a supporting arm 117, and the other end of the supporting arm 117 is hinged with the front end of the auxiliary rod 111.
When impurity and mud content are higher in the sewage that needs handle, accessible driving motor rotates, until making the first filter paste and lean on the front end in the base, and the one deck filter screen has been established to the cover on the inlet tube in other words this moment, filters the very big impurity of size and mud in the sewage tentatively, otherwise, when need not use first filter, through a driving motor antiport, until making first filter and base be in the vertical state.
In the embodiment, as shown in fig. 4 in detail, a rotatable platform 204 is disposed at the top of the settling chamber 20, the solar panel 202 is fixedly disposed at the upper end of the platform 204, an extension arm 205 is disposed at the side of the platform 204, an end of the extension arm 205 is hinged to a rod 206, a second motor 207 is further disposed at the top of the settling chamber 20, an output shaft of the second motor 207 is connected to a second rotating arm 208, the second rotating arm 208 is hinged to a second connecting rod 209, the other end of the second connecting rod 209 is connected to the rod 206, and a spring 210 is disposed between the front end of the rod 206 and the middle portion of the extension arm 205. Preferably, the platform can adopt bearing structure and sedimentation chamber to realize relative rotation, rotates through driving motor two to make the platform take place to rotate, and then guarantee that the solar panel on the platform can receive the shining of sunlight all the time, in order to reach good photoelectric conversion efficiency.
In this embodiment, referring to fig. 2, a third motor 118 is disposed on the top of the mixing chamber 10, an output shaft of the third motor 118 is connected to a stirring rod 105 inside the mixing chamber 10, and a plurality of sets of short rods 119 are disposed on the stirring rod 105.
In this embodiment, the medicine adding device comprises a medicine storage groove 103 arranged on the outer side wall of the mixing chamber, and a medicine adding pump 104 is connected to the medicine storage groove 103.
With the help of the above scheme, add the sewage treatment agent in the medicine storage tank to the sewage in the mixing chamber through control dosing pump to the setting of cooperation motor three and puddler, the effectual sewage treatment agent that makes mixes with sewage intensive mixing, and then has accelerated the absorption and the settlement efficiency of sewage treatment agent to the mud in the sewage, and then has improved the efficiency of mud and separation of water.
In this embodiment, a bottom supporting plate 211 having a V-shaped structure is disposed between the filtering plate 203 and the inner wall of the settling chamber 20, and a plurality of filtering holes (not shown) are uniformly distributed on the surface of the filtering plate 203.
In this embodiment, the heights of the mixing chamber 10, the settling chamber 20 and the purification chamber 30 are gradually increased, and the height of the first water pump 102 is lower than that of the second water pump 201. The first water pump pumps the liquid on the upper layer in the mixing chamber into the settling chamber, and the second water pump also pumps the liquid on the upper layer in the settling chamber into the purifying chamber, because the sludge and impurities are basically settled on the middle and lower layers under normal conditions, and the content of the impurities and sludge in the liquid on the upper layer is less.
The working principle is as follows: when the device is used, a worker introduces sewage into the mixing chamber 10 through the water inlet pipe 101 (whether an initial filtering plate needs to be used is judged according to the content of impurities and sludge in the sewage), the chemical adding pump 104 is started, sewage treatment agents in the chemical storage tank 103 are added into the mixing chamber 10, then the third starting motor 118 is started to stir the sewage mixed with the sewage treatment agents in the mixing chamber 10, after the sewage is fully stirred, the first starting water pump 102 is started to pump the upper-layer liquid in the mixing chamber to the settling chamber 20, after the sewage is fully stood and precipitated in the settling chamber, the second starting water pump 201 is started to pump the upper-layer liquid in the settling chamber to the purifying chamber 30, the liquid passes through the multi-layer sieve plates 302 in the purifying chamber 30 layer by layer from top to bottom, and carries out sterilization and purification treatment on microorganisms in the sewage under the action of the sterilizer 304, and finally the sewage is discharged from a water outlet pipe at the bottom of the purifying chamber.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.

Claims (8)

1. The utility model provides an energy-concerving and environment-protective formula sewage treatment device, its characterized in that includes mixing chamber, drip chamber, the clean room that sets gradually from a left side to the right side, and the outer logical inlet tube that has of mixing chamber, the outer logical outlet pipe that has of clean room, the inside of mixing chamber, drip chamber is equipped with water pump one, water pump two respectively, and water pump one is arranged in taking out the liquid in the mixing chamber to the drip chamber, and water pump two is arranged in taking out the liquid in the drip chamber to the clean room, wherein:
the outer side wall of the mixing chamber is provided with a dosing device for adding a sewage treatment agent into the mixing chamber, and a stirring rod is arranged in the mixing chamber;
the top of the outer side of the settling chamber is provided with a solar panel for supplying power to the whole equipment, and the interior of the settling chamber is divided into a left chamber and a right chamber by a filter plate;
multiple layers of sieve plates are arranged in the purification chamber at intervals, filter holes are uniformly distributed on each layer of sieve plate, the diameters of the filter holes on the sieve plates from top to bottom are gradually reduced, and a sterilizer is arranged on the inner wall of the purification chamber below the sieve plates;
the front end of the water inlet pipe is movably provided with a primary filtering device.
2. The energy-saving and environment-friendly sewage treatment equipment as claimed in claim 1, wherein a base communicated with the water inlet pipe is arranged at the front end of the water inlet pipe, the base is connected with the primary filtering device, the primary filtering device comprises a motor I, a base, a support frame and a primary filtering plate, an auxiliary rod in an L-shaped structure is rotatably arranged on the support frame, and the tail end of the auxiliary rod is connected with the primary filtering plate; the base station is provided with a rotating shaft perpendicular to an output shaft of the first motor, the output shaft of the first motor is provided with a first gear, the rotating shaft is provided with a second gear meshed with the first gear for transmission, the other end of the rotating shaft is connected with a first rotating arm, the first rotating arm is hinged with a first connecting rod, the other end of the first connecting rod is hinged with a support arm, and the other end of the support arm is hinged with the front end of the auxiliary rod.
3. The energy-saving and environment-friendly sewage treatment equipment as claimed in claim 1, wherein a rotatable platform is arranged at the top of the settling chamber, the solar panel is fixedly arranged at the upper end of the platform, an extension arm is arranged at the side part of the platform, a rod body is hinged at the end part of the extension arm, a second motor is further arranged at the top of the settling chamber, an output shaft of the second motor is connected with a second rotating arm, the second rotating arm is hinged with a second connecting rod, the other end of the second connecting rod is connected to the rod body, and a spring is arranged between the front end of the rod body and the middle part of the extension arm.
4. The energy-saving and environment-friendly sewage treatment equipment as claimed in claim 1, wherein a third motor is arranged at the top of the mixing chamber, an output shaft of the third motor is connected with a stirring rod inside the mixing chamber, and a plurality of groups of short rods which are staggered left and right are arranged on the stirring rod.
5. The energy-saving environment-friendly sewage treatment equipment according to claim 1, wherein the chemical adding device comprises a chemical storage tank arranged on the outer side wall of the mixing chamber, and a chemical adding pump is connected to the chemical storage tank.
6. The sewage treatment apparatus of claim 1, wherein a bottom supporting plate having a V-shaped structure is disposed between the filtering plate and the inner wall of the settling chamber.
7. The energy-saving and environment-friendly sewage treatment device according to claim 6, wherein a plurality of filtering holes are uniformly distributed on the surface of the filtering plate.
8. The energy-saving environment-friendly sewage treatment equipment as claimed in claim 1, wherein the heights of the mixing chamber, the settling chamber and the purifying chamber are gradually increased, and the height of the first water pump is lower than that of the second water pump.
CN202110797982.1A 2021-07-14 2021-07-14 Energy-concerving and environment-protective formula sewage treatment device Pending CN113480036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110797982.1A CN113480036A (en) 2021-07-14 2021-07-14 Energy-concerving and environment-protective formula sewage treatment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110797982.1A CN113480036A (en) 2021-07-14 2021-07-14 Energy-concerving and environment-protective formula sewage treatment device

Publications (1)

Publication Number Publication Date
CN113480036A true CN113480036A (en) 2021-10-08

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002255149A1 (en) * 2002-05-07 2003-11-11 The Coca-Cola Company Self-sanitising water treatment apparatus with a reservoir for treated water that includes a heating element
CN204237655U (en) * 2014-11-04 2015-04-01 广州市益诺欧环保有限公司 A kind of water correction plant
CN204803143U (en) * 2015-07-01 2015-11-25 严加清 Waste water treatment equipment slaughters
CN205528102U (en) * 2016-01-26 2016-08-31 上海腾玉节能科技有限公司 Take multi -stage precipitation sewage treatment plant of smell purification
CN107352714A (en) * 2017-08-23 2017-11-17 郑州丽福爱生物技术有限公司 A kind of municipal works sewage-treatment plant
CN108236797A (en) * 2018-01-20 2018-07-03 李金平 A kind of chemical engineering sewage rapid precipitation device
CN211311156U (en) * 2019-12-13 2020-08-21 江苏五水环境工程有限公司当阳分公司 Multi-stage treatment type sewage treatment device
CN213012342U (en) * 2020-07-31 2021-04-20 河南中蓝环保工程有限公司 Rural sewage treatment equipment

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002255149A1 (en) * 2002-05-07 2003-11-11 The Coca-Cola Company Self-sanitising water treatment apparatus with a reservoir for treated water that includes a heating element
CN204237655U (en) * 2014-11-04 2015-04-01 广州市益诺欧环保有限公司 A kind of water correction plant
CN204803143U (en) * 2015-07-01 2015-11-25 严加清 Waste water treatment equipment slaughters
CN205528102U (en) * 2016-01-26 2016-08-31 上海腾玉节能科技有限公司 Take multi -stage precipitation sewage treatment plant of smell purification
CN107352714A (en) * 2017-08-23 2017-11-17 郑州丽福爱生物技术有限公司 A kind of municipal works sewage-treatment plant
CN108236797A (en) * 2018-01-20 2018-07-03 李金平 A kind of chemical engineering sewage rapid precipitation device
CN211311156U (en) * 2019-12-13 2020-08-21 江苏五水环境工程有限公司当阳分公司 Multi-stage treatment type sewage treatment device
CN213012342U (en) * 2020-07-31 2021-04-20 河南中蓝环保工程有限公司 Rural sewage treatment equipment

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Application publication date: 20211008