CN112390415A - Waste reduction construction method in environment-friendly pollution discharge municipal engineering - Google Patents
Waste reduction construction method in environment-friendly pollution discharge municipal engineering Download PDFInfo
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- CN112390415A CN112390415A CN202011278889.1A CN202011278889A CN112390415A CN 112390415 A CN112390415 A CN 112390415A CN 202011278889 A CN202011278889 A CN 202011278889A CN 112390415 A CN112390415 A CN 112390415A
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- municipal engineering
- collecting plate
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- 238000010276 construction Methods 0.000 title claims abstract description 30
- 230000009467 reduction Effects 0.000 title claims abstract description 16
- 239000002699 waste material Substances 0.000 title claims abstract description 16
- 239000010802 sludge Substances 0.000 claims abstract description 78
- 238000001914 filtration Methods 0.000 claims abstract description 27
- 238000004062 sedimentation Methods 0.000 claims abstract description 25
- 239000010865 sewage Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000015271 coagulation Effects 0.000 claims abstract description 12
- 238000005345 coagulation Methods 0.000 claims abstract description 12
- 239000013049 sediment Substances 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims abstract description 8
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 239000002244 precipitate Substances 0.000 claims abstract description 6
- 239000000701 coagulant Substances 0.000 claims abstract description 4
- 238000001556 precipitation Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 230000001954 sterilising effect Effects 0.000 claims description 3
- 238000004659 sterilization and disinfection Methods 0.000 claims description 3
- 239000002390 adhesive tape Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 3
- 238000009264 composting Methods 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
Landscapes
- 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)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a waste reduction construction method in environment-friendly pollution discharge municipal engineering, belonging to the field of waste reduction, and the waste reduction construction method in the environment-friendly pollution discharge municipal engineering comprises the following steps of S1: grid filtering: filtering and removing gravel and construction site solid garbage from construction sewage through a filtering grid, wherein the solid garbage can be used for ground landfill leveling in sewage discharge municipal engineering; step S2: and (3) precipitation: introducing construction sewage into a sedimentation tank temporarily built in construction, standing for 5-8h, and separating the sewage from sediment; step S3: coagulation: introducing the sewage treated in the step into a temporarily built coagulation tank, and adding a coagulant for coagulation; step S4: and (3) filtering: introducing the water treated in the step S3 into a temporarily built filtering tank for filtering; step S5: mixing sludge: sludge precipitates in the steps S2, S3 and S4 are mixed and slurry is filtered.
Description
Technical Field
The invention belongs to the technical field of waste reduction, and particularly relates to a waste reduction construction method in environment-friendly pollution discharge municipal engineering.
Background
Along with the improvement of environmental requirement, the processing and the emission of building site sewage obtain the attention of height, if adopt traditional sewage treatment method to administer, the sedimentation process is comparatively slow, and the cost time is of a specified duration, handles improperly, easily causes the precipitate to rise backward and flow into the delivery port, then causes the delivery port to block up lightly, then influences next process seriously, then leads to the device to damage seriously, can handle difficult intensification when building site sewage proportion is big, worsens the environment.
Disclosure of Invention
The invention aims to provide a waste reduction construction method in environment-friendly pollution discharge municipal engineering to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the waste reduction construction method in the environment-friendly pollution discharge municipal engineering comprises the following steps:
step S1: grid filtering: filtering and removing gravel and construction site solid garbage from construction sewage through a filtering grid, wherein the solid garbage can be used for ground landfill leveling in sewage discharge municipal engineering;
step S2: and (3) precipitation: introducing construction sewage into a sedimentation tank temporarily built in construction, standing for 5-8h, and separating the sewage from sediment;
step S3: coagulation: introducing the sewage treated in the step into a temporarily built coagulation tank, and adding a coagulant for coagulation;
step S4: and (3) filtering: introducing the water treated in the step S3 into a temporarily built filtering tank for filtering;
step S5: mixing sludge: mixing the sludge precipitates in the step S2, the step S3 and the step S4 and filtering the slurry;
step S6: sludge recovery: concentrating and dehydrating the slurry filtered in the step S5, and recovering the dehydrated sludge;
step S7: and (3) disinfection: and (4) sterilizing the water treated in the step (S4), and outputting the sterilized water.
Preferably, a sludge collecting plate is arranged at the bottom of the sedimentation tank in the step S2.
Preferably, the sludge collecting plate adopts the following structure:
including the sedimentation tank, its characterized in that: the sedimentation tank is characterized in that a sludge collecting plate is fixedly connected to the upper end face of the bottom of the sedimentation tank, a water inlet and a water outlet are fixedly connected to the side wall of the sedimentation tank, and a plurality of sludge adhesion belts are arranged on the upper end face of the sludge collecting plate.
Preferably, the mud collecting plate internal rotation is connected with the multiunit transmission shaft, every be equipped with multiunit roll up the wire casing on the transmission shaft, every group roll up the wire casing both ends and all be equipped with the adhesion area baffle, adhesion area baffle fixed connection is on the mud collecting plate, is equipped with multiunit and mud adhesion area assorted through-hole on the mud collecting plate, every group the through-hole is with every mud adhesion area one-to-one, every group the through-hole is located directly over the wire winding groove right end, every mud adhesion area all through the through-hole fixed connection rather than corresponding on the roll up the wire casing, every the one end fixedly connected with gear that the mud collecting plate was kept away from to the transmission shaft, be equipped with the chain on the gear, every gear all with.
Preferably, a driving motor is arranged outside the sludge collecting plate, a first screw is fixedly connected to the right end of one of the multiple groups of gears, a second screw is rotatably connected to the driving motor, and the second screw is meshed with the first screw.
Preferably, the sludge adhesion belt is made of rubber materials and has certain elasticity, an air cavity and an elastic steel bar are arranged inside the top end of the sludge adhesion belt, and the elastic steel bar is in a bent hook shape in a natural state.
The invention has the technical effects and advantages that: the device has increased sediment adhesion device compared with traditional sedimentation tank, subside the back to the sediment and adsorb, avoided the sediment to diffuse once more because of external force factor, the device has increased the automation of adhesion device simultaneously and has stretched out and draw back, the hindrance that the adhesion device caused when having avoided clearing up the sediment, the inside air cavity that is equipped with of the device adhesion device in addition, make the adhesion device float inside the sedimentation tank, increase the adhesion efficiency of adhesion device, be equipped with hook-like head in addition in the adhesion device simultaneously, the adhesion efficiency of device to the sediment has further been increased.
Drawings
FIG. 1 is a schematic view of the structure of a sedimentation tank according to the present invention;
FIG. 2 is a schematic view of the structure of the sludge collecting plate according to the present invention;
FIG. 3 is a front view of a sludge collection plate according to the present invention;
FIG. 4 is a partial cross-sectional view taken along line B-B of FIG. 3 in accordance with the present invention;
FIG. 5 is a side view of a sludge collection plate according to the present invention;
FIG. 6 is a structural view showing the sludge collecting plate according to the present invention in an unfolded state;
FIG. 7 is a structural view showing a rolled state of the sludge collecting plate according to the present invention;
FIG. 8 is an enlarged view of a portion A of FIG. 4 according to the present invention.
In the figure: 101, 102, 103, 104, 105, 106 and 106 transmission shafts, 107 winding grooves, 108 sludge adhesion belts, 109 adhesion belt baffles, 201 gears, 202 chains, 203 first screws, 204 second screws, 301 air chambers and 302 elastic steel bars.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a waste reduction construction method in environment-friendly pollution discharge municipal engineering shown in figures 1-8, which comprises the following steps:
step S1: grid filtering: filtering and removing gravel and construction site solid garbage from construction sewage through a filtering grid, wherein the solid garbage can be used for ground landfill leveling in sewage discharge municipal engineering;
step S2: and (3) precipitation: introducing construction sewage into a sedimentation tank temporarily built in construction, standing for 5-8h, and separating the sewage from sediment;
step S3: coagulation: introducing the sewage treated in the step into a temporarily built coagulation tank, and adding a coagulant for coagulation;
step S4: and (3) filtering: introducing the water treated in the step S3 into a temporarily built filtering tank for filtering;
step S5: mixing sludge: mixing the sludge precipitates in the step S2, the step S3 and the step S4 and filtering the slurry;
step S6: sludge recovery: concentrating and dehydrating the slurry filtered in the step S5, and recovering the dehydrated sludge;
step S7: and (3) disinfection: and (4) sterilizing the water treated in the step (S4), and outputting the sterilized water.
Step S6 further includes aerobic and anaerobic digestion and composting of the sludge for recycling of the sludge.
Specifically, in step S2, a sludge collecting plate is disposed at the bottom of the sedimentation tank.
Specifically, the sludge collecting plate specifically adopts the following structure:
including sedimentation tank 101, its characterized in that: the upper end face of the bottom of the sedimentation tank 101 is fixedly connected with a sludge collection plate 105, the side wall of the sedimentation tank 101 is fixedly connected with a water inlet 102 and a water outlet 103, and the upper end face of the sludge collection plate 105 is provided with a plurality of sludge adhesion belts 108.
Specifically, the mud collection board 105 internal rotation is connected with multiunit transmission shaft 106, be equipped with multiunit book line groove 107 on every transmission shaft 106, every group spiral line groove 107 both ends all are equipped with adhesion area baffle 109, adhesion area baffle 109 fixed connection is on mud collection board 105, be equipped with multiunit and mud adhesion area 108 assorted through-hole on the mud collection board 105, every group through-hole and every mud adhesion area 108 one-to-one, every group through-hole is located book line groove 107 right-hand member directly over, every mud adhesion area 108 all through the through-hole fixed connection rather than corresponding on book line groove 107, the one end fixedly connected with gear 201 of mud collection board 105 is kept away from to every transmission shaft 106, be equipped with chain 202 on the gear 201, every gear 201 all with chain 202 intermeshing.
Specifically, the outside of the sludge collecting plate 105 is provided with a driving motor 104, one right end of the plurality of groups of gears 201 is fixedly connected with a first screw 203, the driving motor 104 is rotatably connected with a second screw 204, and the second screw 204 is meshed with the first screw 203.
Specifically, the sludge adhesion belt 108 is made of rubber materials and has certain elasticity, an air cavity 301 and an elastic steel bar 302 are arranged inside the top end of the sludge adhesion belt 108, and the elastic steel bar 302 is in a bent hook shape in a natural state.
The working principle is as follows:
when the sedimentation tank works, as the bottom is provided with the sludge collection plate 105 and the sludge collection plate 105 is provided with a plurality of groups of sludge adhesion belts 108, when sewage is settled in the sedimentation tank 101, the sediments are settled and adhered on the sludge adhesion belts 108, so that the adhesion collection of the sediments is realized, after the sedimentation tank works, the driving motor 104 is started to rotate the second screw 204, the first screw 203 meshed with the second screw 204 rotates, the first screw 203 drives the transmission shaft 106 to rotate, as the bottom end of the sludge adhesion belts 108 is fixed on the winding groove 107, the transmission shaft 106 rotates to drive the winding groove 107 to rotate, so that the sludge adhesion belts 108 are wound around the winding groove 107, and meanwhile, as the second screw 204 and the first screw 203 are connected by screws, the first screw 203 moves towards the right end along with the rotation, at the moment, the sludge adhesion belts 108 are wound in a thread shape along the winding groove 107, and after the top end of the sludge adhesion belts 108 completely enters the sludge collection plate 105, the joint of the sludge adhesion belt 108 and the winding groove 107 is moved to the leftmost end of the winding groove 107, meanwhile, the sludge remained on the sludge adhesion belt 108 is scraped off by the upper surface of the sludge collection plate 105, at the moment, the sludge adhesion belt 108 touches the adhesion belt baffle 109, the winding of each group of sludge adhesion belts 108 is prevented from being interfered, at the moment, the sludge collection plate 105 is cleaned by using a sludge scraping plate, after the cleaning, the driving motor 104 is started, the second screw 204 is reversely rotated, at the moment, the transmission shaft 106 is reversely rotated, the sludge adhesion belt 108 resets along the pores of the sludge collection plate 105, the cleaned sludge is subjected to sampling analysis, aerobic and anaerobic digestion and composting treatment are carried out after the analysis, and the sludge is recycled.
Meanwhile, an air cavity 301 and an elastic steel bar 302 are arranged in the sludge adhesion belt 108, after sewage is injected into the sedimentation tank 101, the top end of the sludge adhesion belt 108 floats upwards under the action of the air cavity 301, so that the area of an adhesion area is increased, and meanwhile, the elastic steel bar 302 is in a bent hook shape in a natural state, so that the top end of the sludge adhesion belt 108 is in a hook shape, the adhesion degree is enhanced, and precipitates are prevented from being separated.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The waste reduction construction method in the environment-friendly pollution discharge municipal engineering is characterized by comprising the following steps of:
step S1: grid filtering: filtering and removing gravel and construction site solid garbage from construction sewage through a filtering grid, wherein the solid garbage can be used for ground landfill leveling in sewage discharge municipal engineering;
step S2: and (3) precipitation: introducing construction sewage into a sedimentation tank temporarily built in construction, standing for 5-8h, and separating the sewage from sediment;
step S3: coagulation: introducing the sewage treated in the step into a temporarily built coagulation tank, and adding a coagulant for coagulation;
step S4: and (3) filtering: introducing the water treated in the step S3 into a temporarily built filtering tank for filtering;
step S5: mixing sludge: mixing the sludge precipitates in the step S2, the step S3 and the step S4 and filtering the slurry;
step S6: sludge recovery: concentrating and dehydrating the slurry filtered in the step S5, and recovering the dehydrated sludge;
step S7: and (3) disinfection: and (4) sterilizing the water treated in the step (S4), and outputting the sterilized water.
2. The waste reduction construction method in the environment-friendly pollution discharge municipal engineering according to claim 1, characterized in that: in step S2, a sludge collecting plate is arranged at the bottom of the sedimentation tank.
3. The waste reduction construction method in the environment-friendly pollution discharge municipal engineering according to claim 2, characterized in that: wherein the sludge collecting plate specifically adopts the following structure:
including sedimentation tank (101), its characterized in that: the sludge collecting device is characterized in that a sludge collecting plate (105) is fixedly connected to the upper end face of the bottom of the sedimentation tank (101), a water inlet (102) and a water outlet (103) are fixedly connected to the side wall of the sedimentation tank (101), and a plurality of sludge adhesion belts (108) are arranged on the upper end face of the sludge collecting plate (105).
4. The waste reduction construction method in the environment-friendly pollution discharge municipal engineering according to claim 3, characterized in that: a plurality of groups of transmission shafts (106) are rotatably connected in the sludge collecting plate (105), each transmission shaft (106) is provided with a plurality of groups of winding grooves (107), both ends of each group of winding grooves (107) are provided with adhesive tape baffles (109), the sticky belt baffle (109) is fixedly connected on the sludge collecting plate (105), a plurality of groups of through holes matched with the sludge sticky belts (108) are arranged on the sludge collecting plate (105), each group of through holes corresponds to each sludge sticky belt (108) one by one, each group of through holes is positioned right above the right end of the winding groove (107), each sludge sticky belt (108) is fixedly connected on the winding groove (107) through the through hole corresponding to the through hole, one end of each transmission shaft (106) far away from the sludge collecting plate (105) is fixedly connected with a gear (201), chains (202) are arranged on the gears (201), and each gear (201) is meshed with the chain (202).
5. The waste reduction construction method in the environment-friendly pollution discharge municipal engineering according to claim 4, characterized in that: the sludge collecting plate (105) is externally provided with a driving motor (104), one right end of the multiple groups of gears (201) is fixedly connected with a first screw rod (203), the driving motor (104) is connected with a second screw rod (204) in a rotating mode, and the second screw rod (204) is meshed with the first screw rod (203).
6. The waste reduction construction method in the environment-friendly pollution discharge municipal engineering according to claim 3, characterized in that: the sludge adhesion belt (108) is made of rubber materials and has certain elasticity, an air cavity (301) and an elastic steel bar (302) are arranged inside the top end of the sludge adhesion belt (108), and the elastic steel bar (302) is in a bent hook shape in a natural state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011278889.1A CN112390415A (en) | 2020-11-16 | 2020-11-16 | Waste reduction construction method in environment-friendly pollution discharge municipal engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011278889.1A CN112390415A (en) | 2020-11-16 | 2020-11-16 | Waste reduction construction method in environment-friendly pollution discharge municipal engineering |
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| Publication Number | Publication Date |
|---|---|
| CN112390415A true CN112390415A (en) | 2021-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011278889.1A Pending CN112390415A (en) | 2020-11-16 | 2020-11-16 | Waste reduction construction method in environment-friendly pollution discharge municipal engineering |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206232581U (en) * | 2016-12-07 | 2017-06-09 | 上海楷都智能科技有限公司 | Municipal sewage sludge processing system |
| CN106977054A (en) * | 2017-04-25 | 2017-07-25 | 浙江华鼎市政建设有限公司 | Municipal wastewater cleaning system construction technology |
| CN107827320A (en) * | 2017-12-02 | 2018-03-23 | 浏阳志强环保设备制造有限公司 | A kind of sewage treatment technique |
| CN209685531U (en) * | 2019-03-18 | 2019-11-26 | 深圳市江辉环保科技有限公司 | Waste water treatment system |
-
2020
- 2020-11-16 CN CN202011278889.1A patent/CN112390415A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206232581U (en) * | 2016-12-07 | 2017-06-09 | 上海楷都智能科技有限公司 | Municipal sewage sludge processing system |
| CN106977054A (en) * | 2017-04-25 | 2017-07-25 | 浙江华鼎市政建设有限公司 | Municipal wastewater cleaning system construction technology |
| CN107827320A (en) * | 2017-12-02 | 2018-03-23 | 浏阳志强环保设备制造有限公司 | A kind of sewage treatment technique |
| CN209685531U (en) * | 2019-03-18 | 2019-11-26 | 深圳市江辉环保科技有限公司 | Waste water treatment system |
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Application publication date: 20210223 |