CN113321391A - Urban sewer ditch sludge device and process - Google Patents
Urban sewer ditch sludge device and process Download PDFInfo
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- CN113321391A CN113321391A CN202110710772.4A CN202110710772A CN113321391A CN 113321391 A CN113321391 A CN 113321391A CN 202110710772 A CN202110710772 A CN 202110710772A CN 113321391 A CN113321391 A CN 113321391A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
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- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
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- 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
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- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- 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
- C02F2303/26—Reducing the size of particles, liquid droplets or bubbles, e.g. by crushing, grinding, spraying, creation of microbubbles or nanobubbles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Environmental & Geological Engineering (AREA)
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- Hydrology & Water Resources (AREA)
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Abstract
本发明公开了一种城市下水道通沟污泥处理装置，包括污泥储池、回用水池以及污水调节池，污泥储池内壁安装有用于污泥破碎的破碎机，污泥储池一侧安装有用于分离污泥混合物的洗涤转鼓，洗涤转鼓大颗粒物出口与粗大物料分选设备相连，洗涤转鼓小颗粒物出口通过污泥管与用于旋流洗沙的砂水分离器相连，砂水分离器和粗大物料分选设备通过污水管与污水调节池相连，污水调节池通过污水泵与污水处理设备相连，污水处理设备通过污泥泵与用于磁粉分离的磁分离设备相连，磁分离设备底部通过污泥管与污泥脱水机相连，本发明设置了粗破碎工艺，经粗破碎处理后较大颗粒如木头、石头均被均质化，均质化的污泥不易板结，从而冲洗更彻底。
The invention discloses an urban sewer channel sludge treatment device, comprising a sludge storage tank, a reuse water tank and a sewage conditioning tank. A crusher for sludge crushing is installed on the inner wall of the sludge storage tank. A washing drum for separating the sludge mixture is installed, the large particle outlet of the washing drum is connected to the coarse material sorting equipment, and the small particle outlet of the washing drum is connected to the sand-water separator for cyclone sand washing through the sludge pipe. The sand-water separator and the coarse material sorting equipment are connected with the sewage conditioning tank through the sewage pipe, the sewage conditioning tank is connected with the sewage treatment equipment through the sewage pump, and the sewage treatment equipment is connected with the magnetic separation equipment for magnetic particle separation through the sludge pump. The bottom of the separation equipment is connected with the sludge dewatering machine through a sludge pipe. The present invention sets a coarse crushing process. After the coarse crushing treatment, larger particles such as wood and stone are homogenized, and the homogenized sludge is not easy to be hardened, so that the Rinse more thoroughly.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to a device and a process for urban sewer ditch sludge.
Background
In the prior art, the sludge of urban sewer channels contains more impurities with different sizes, the large-particle materials are screened by adopting a vibrating screen in the current mainstream pretreatment, although the large-particle materials can be primarily screened, the large-particle materials are adhered with more sludge and cannot be cleaned, and meanwhile, the discharging speed of a sludge vehicle is slow due to the slow treatment speed of the vibrating screen, so that the production efficiency is seriously influenced;
at present, domestic urban sewer sludge treatment stations adopt a multi-stage elutriation treatment process, substances with different particle sizes are mainly screened out through the sizes of meshes, but as the slag materials with the same particle size in the undersize materials also contain mixtures of stones, fibers and the like, the sorting of the slag materials is incomplete, and the subsequent treatment of the slag materials is difficult;
because the elutriation needs to be carried out by adopting a large amount of water, the current sludge treatment station for the through ditch can only be selected near a sewage treatment plant, but because most of the current sewage treatment stations do not have redundant land, the land selectivity is relatively limited, so that the sludge treatment for the through ditch is difficult to popularize; therefore, the invention adopts a device and a process for urban sewer dredging sludge.
Disclosure of Invention
The invention provides a city sewer ditch sludge device, which is provided with a coarse crushing process, wherein large particles such as wood and stone are homogenized after the coarse crushing process, the sludge plays a role of loosening and plays a key role in subsequent high-pressure washing and sorting, the homogenized sludge is not easy to harden, so that the washing is more thorough, a multi-stage treatment unit is arranged, the problem that plastic, fiber and stone still exist in coarse materials in the prior art is solved, and the problem of subsequent treatment of slag materials is solved.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides an urban sewer dredging sludge treatment device, including sludge storage tank, retrieval and utilization pond and sewage equalizing basin, sludge storage tank installs the breaker that is used for the mud breakage in the inner wall, sludge storage tank installs the washing rotary drum that is used for separating the mud mixture in one side, washing rotary drum large granule export links to each other with thick material sorting equipment, the export of the little particulate matter of washing rotary drum links to each other with the sand-water separator that is used for the whirl to wash sand through the sludge pipe, sand-water separator and thick material sorting equipment link to each other with the sewage equalizing basin through the sewage pipe, the sewage equalizing basin passes through the sewage pump and links to each other with sewage treatment equipment, sewage treatment equipment passes through the sludge pump and links to each other with the magnetic separation equipment that is used for magnetic particle separation, the magnetic separation equipment bottom passes through the sludge pipe and links to each other with the sludge dewaterer, the sludge dewaterer bottom passes through the well pipe and links to each other with the retrieval and utilization pond, inside retrieval and utilization water pump and washing rotary drum through the retrieval and utilization water pump, The water inlet of the sludge dewatering machine is connected.
Furthermore, a feeding machine is installed on one side, close to the sludge storage pool, of the washing drum, a sludge grab bucket used for conveying sludge is arranged between the sludge storage pool and the feeding machine, a sludge conveying screw is installed on the feeding machine, and the tail end of the sludge conveying screw extends into the washing drum.
Further, thick material screen underflow conveyer is installed to washing rotary drum large granule export, and thick material screen underflow conveyer passes through sludge pipe and thick material sorting facilities.
Furthermore, a thick and thick light material conveyor for outputting light materials is installed on the side part of the thick and thick material sorting equipment, and a thick and thick heavy material conveyor for outputting heavy materials is installed at the bottom part of the thick and thick material sorting equipment.
Furthermore, the large particles are particles with a diameter of more than 10mm, and the fine sand and muddy water mixture is small particles with a diameter of less than 10 mm.
Further, compressed air is introduced into the coarse material flotation equipment.
Furthermore, a fine sand screw conveyor for discharging clean fine sand is installed at the bottom of the sand-water separator, and a sludge outlet of the sludge dewatering machine is provided with a dewatered sludge conveyor.
Further, the crusher feed hopper is attached to a wall opening at the top of the sludge storage pool, and the feed hopper is larger than an external sludge truck dumping opening.
Further, washing rotary drum, sand-water separator, sludge dewaterer, sewage treatment device, thick material sorting facilities and thick light material conveyer all adopt seal structure, and all link to each other with the negative pressure draught fan through the smelly trachea, the negative pressure draught fan other end is connected with the biological deodorizing device who is used for the deodorization.
A process for treating sludge in urban sewer channels comprises the following steps:
firstly, collecting urban sewer dredging sludge to a sludge treatment station through a sludge truck; secondly, conveying the crushed sludge to a sludge receiving hopper through a sludge grab bucket; thirdly, the sludge receiving hopper conveys the sludge to a washing rotary drum, and the washing rotary drum screens coarse particles, fine sand and a mud-water mixture; fourthly, conveying the coarse particles to coarse material sorting equipment through a coarse material undersize conveyor, and sorting coarse light materials and coarse heavy materials; sending the fine sand and mud-water mixture to a sand-water separator, carrying out cyclone sand washing treatment by the sand-water separator, discharging clean fine sand through a fine sand screw conveyor, and discharging the mud-water mixture to a sewage adjusting tank; the mud-water mixture is pumped to sewage treatment equipment through a sewage pump for mud-water separation; fifthly, the separated sludge enters a sludge dewatering machine for dewatering and is sent to a household garbage incineration plant for incineration treatment.
Further, the sewage treatment equipment is magnetic coagulation sewage treatment equipment, and a flocculating agent, a coagulant and magnetic powder are added into a coagulation area.
Compared with the prior art, the invention has the following beneficial effects:
1. the pretreatment of the invention is provided with a coarse crushing process, large particles such as wood and stone are homogenized after the coarse crushing treatment, and simultaneously, the sludge plays a role in loosening and plays a key role in subsequent high-pressure washing and sorting. The homogenized sludge is not easy to harden and the flushing is more thorough.
2. The sludge vehicle is directly poured onto the feeding hopper of the crusher, and the crusher does not need to be screened, so that the discharging efficiency is improved.
3. The invention is additionally provided with a coarse material sorting device, and after being sorted by the coarse material sorting device, the coarse materials are sorted into coarse material light substances (plastics, fibers, leaves and the like) and coarse material heavy substances (stones, bricks and the like), thereby creating conditions for subsequent material treatment and recycling.
4. The invention adds sewage treatment equipment and adopts a magnetic separation technology, so that under the condition of meeting the requirement of equipment flushing water, land resources are saved, the water intake of the system is greatly reduced, and the effect of saving water resources is achieved.
5. The invention adds the sludge dewatering unit to prevent the sludge from repeatedly entering the sewage pipe network.
6. The device adopts a fully-closed structure, adds a biological deodorization device under the condition of reducing odor overflow, and reduces the influence on the surrounding environment by collecting and processing the odor through negative pressure.
Drawings
1-a crusher, 2-a sludge storage tank, 3-a sludge grab bucket, 4-a feeder, 5-a sludge conveying screw, 6-a coarse material undersize conveyer, 7-a coarse material sorting device, 8-a coarse heavy material conveyer, 9-a coarse light material conveyer, 10-a reuse water tank, 11-a reuse water pump, 12-a sand-water separator, 13-a fine sand screw conveyer, 14-a sewage treatment device, 15-a magnetic separation device, 16-a sludge pump, 17-a sludge dehydrator, 18-a dehydrated sludge conveyer, 19-a negative pressure induced draft fan, 20-a biological deodorization device, 21-a sewage adjusting tank, 22-a sewage pump and 23-a washing rotary drum.
FIG. 1 is a schematic structural diagram of an urban sewer dredging sludge device.
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 embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
One embodiment according to the present invention is shown in conjunction with FIG. 1: the utility model provides an urban sewer sludge treatment equipment, including mud storage pool 2, reuse water pool 10 and sewage equalizing basin 21, the breaker 1 that is used for the mud breakage is installed to mud storage pool 2 inner wall, mud storage pool 2 one side is installed and is used for separating the washing rotary drum 23 of mud mixture, washing rotary drum 23 large granule export links to each other with thick material sorting facilities 7, the export of the little particulate matter of washing rotary drum 23 links to each other with sand-water separator 12 that is used for the whirlwind to wash sand through the sludge pipe, sand-water separator 12 and thick material sorting facilities 7 link to each other with sewage equalizing basin 21 through the sewage pipe, sewage equalizing basin 21 links to each other with sewage treatment facilities 14 through sewage pump 22, sewage treatment facilities 14 links to each other with magnetic separation equipment 15 that is used for magnetic particle separation through sludge pump 16, sewage treatment facilities 14 is magnetic coagulation sewage treatment facilities 14, and wherein the coagulation district adds flocculating agent, Coagulant and magnetic powder are added, magnetic powder separation is carried out on the coagulant and the magnetic powder through a magnetic separation device 15, the bottom of the magnetic separation device 15 is connected with a sludge dewatering machine 17 through a sludge pipe, the bottom of the sludge dewatering machine 17 is connected with a reuse water tank 10 through a reclaimed water pipe, and the interior of the reuse water tank 10 is connected with a washing rotary drum 23 and a water inlet of the sludge dewatering machine 17 through a reuse water pump 11.
A feeding machine 4 is arranged on one side of the washing rotary drum 23 close to the sludge storage tank 2, a sludge grab bucket 3 for conveying sludge is arranged between the sludge storage tank 2 and the feeding machine 4, a sludge conveying screw 5 is arranged on the feeding machine 4, the tail end of the sludge conveying screw 5 extends into the washing rotary drum 23, the sludge in the sludge storage tank 2 is grabbed into the feeder 4 through the sludge grab bucket 3, the feeder 4 sends the sludge into the washing rotary drum 23 through the sludge conveying screw 5, carry out material separation through washing rotary drum 23, thick material undersize conveyer 6 is installed to washing rotary drum 23 large granule export, and thick material undersize conveyer 6 passes through sludge pipe and thick material sorting facilities 7, and thick particulate matter carries to thick material flotation equipment through thick material undersize conveyer 6, and large granule thing is the granule more than diameter 10mm, and fine sand and mud-water mixture are the small granule less than diameter 10 mm.
The lateral part of the coarse material sorting device 7 is provided with a coarse light material conveyor 9 for outputting light materials, the bottom of the coarse material sorting device 7 is provided with a coarse heavy material conveyor 8 for outputting heavy materials, compressed air is introduced into the coarse material sorting device 7, and light materials with specific gravity less than 1000kg/m3 are removed by an upper scraper of the device and output by the lateral part of the coarse light material conveyor 9; heavy material with a specific gravity of more than 1000kg/m3 is output through the bottom coarse heavy material conveyor 8.
A fine sand screw conveyor 13 for discharging clean fine sand is arranged at the bottom of the sand-water separator 12, a sludge outlet of a sludge dewatering machine 17 is provided with a dewatered sludge conveyor 18, the clean fine sand is discharged through the fine sand screw conveyor 13 and is fine sand with the diameter of 0.5-10 mm, the clean fine sand is recycled as primary building materials, the dewatered sludge conveyor 18 discharges dewatered sludge, a feed hopper of the crusher 1 is attached to a top wall opening of the sludge storage pool 2 and is larger than a dumping opening of an external sludge truck, the sludge truck is directly dumped onto the feed hopper of the crusher 1, the crusher 1 does not need to be screened, so that the unloading efficiency is increased, the washing rotary drum 23, the sand-water separator 12, the sludge dewatering machine 17, the sewage treatment equipment 14, the coarse material sorting equipment 7 and the coarse light material conveyor 9 are all sealed structures and are all connected with a negative pressure induced draft fan 19 through an odor pipe, the other end of the negative pressure draught fan 19 is connected with a biological deodorization device 20 for deodorization, a totally closed structure is adopted, the biological deodorization device 20 is additionally arranged under the condition of reducing odor overflowing, and negative pressure collection is used for treatment, so that the influence on the surrounding environment is reduced.
A process for treating sludge in urban sewer channels comprises the following steps:
firstly, collecting urban sewer dredging sludge to a sludge treatment station through a sludge truck; secondly, conveying the crushed sludge to a sludge receiving hopper through a sludge grab bucket 3; thirdly, the sludge receiving hopper conveys the sludge to the washing rotary drum 23, and the washing rotary drum 23 screens out coarse particles, fine sand and a mud-water mixture; the coarse particles are conveyed to coarse material sorting equipment 7 through a coarse material undersize conveyor 6, and coarse light materials and coarse heavy materials are sorted out; sending the fine sand and mud-water mixture to a sand-water separator 12, carrying out cyclone sand washing treatment by the sand-water separator 12, discharging clean fine sand through a fine sand screw conveyor 13, and discharging the mud-water mixture to a sewage adjusting tank 21; pumping the sludge-water mixture to the sewage treatment equipment 14 through a sewage pump 22 for sludge-water separation; sixthly, the separated sludge enters a sludge dewatering machine 17 for dewatering and is sent to a household garbage incineration plant for incineration treatment.
In the invention, when urban sewer sludge is treated, firstly, the urban sewer ditch sludge is concentrated to a sludge treatment station through a sludge truck, the sludge truck dumps the sludge to a crusher 1, the crusher 1 preliminarily crushes the sludge, damage to subsequent equipment caused by large-particle-size materials is reduced, the crushed sludge is stored in a sludge storage pool 2, the crushed sludge is conveyed to a sludge receiving hopper through a sludge grab bucket 3, and the sludge receiving hopper is slowly conveyed to a washing rotary drum 23 through a sludge conveying screw 5; separating coarse particles with the particle size of more than 10mm, fine sand with the particle size of less than 10mm and a mud-water mixture from the sludge by using a washing drum 23 sieve;
coarse particles more than 10mm are conveyed to coarse material sorting equipment 7 through a coarse material undersize conveyor 6, compressed air is introduced into the coarse material sorting equipment 7, light materials with the specific gravity less than 1000kg/m3 are removed through an upper scraper of the equipment and are output through a lateral coarse light material conveyor 9, heavy materials with the specific gravity greater than 1000kg/m3 are output through a bottom coarse heavy material conveyor 8, coarse material sorting equipment 7 sorts out medium-particle-diameter heavy materials and light materials, the medium-particle-diameter light materials can be conveyed to a household garbage incineration plant for incineration treatment, and the medium-particle-diameter heavy materials are recycled as primary building materials.
The fine sand and the muddy water mixture screened by the washing rotary drum 23 are sent to the sand-water separator 12 through a pipeline by gravity, after the fine sand is subjected to rotational flow sand washing by the sand-water separator 12, the clean fine sand is discharged through the fine sand screw conveyor 13, the muddy water mixture is discharged to the sewage adjusting tank 21 through a pipeline by gravity, the fine sand can be recycled as a primary building material, the muddy water mixture is pumped to the sewage treatment equipment 14 through the sewage pump 22, the sewage treatment equipment 14 is the magnetic coagulation sewage treatment equipment 14, a flocculating agent, a coagulant and magnetic powder are added into a coagulation area, the muddy water separation is carried out through a sedimentation tank after full mixing reaction, the sludge is pumped to the magnetic separation equipment 15 through the sludge pump 16 for magnetic powder separation, the magnetic powder flows back to the flocculation reaction area, the sludge is discharged to the sludge dewatering machine 17 by gravity, and the supernatant is discharged to the reuse water tank 10.
The sludge separated by the sewage treatment equipment 14 enters a sludge dewatering machine 17, the sludge is made to form large alum flocs by adding a flocculating agent, the sludge is dewatered by the sludge dewatering machine 17, the water content of the sludge is less than 70%, the dry sludge is discharged by a dewatered sludge conveyor 18, filter pressing water flows back to a reuse water tank 10, and the sludge can be sent to a household garbage incineration plant for incineration treatment.
The effluent from the sewage treatment equipment 14 and the filtered water from the sludge dewatering equipment 17 are discharged to a reuse water tank 10, suspended particulate matters in the sewage are greatly removed, the effluent is pressurized and recycled to the sludge dewatering equipment 17, the coarse material sorting equipment 7, the sand-water separator 12 and the washing rotary drum 23 by the reuse water pump 11, the residual tail water is discharged to a sewage pipe network, the gas on the inner walls of the washing rotary drum 23, the sand-water separator 12, the sludge dewatering equipment 17, the sewage treatment equipment 14 and the coarse material sorting equipment 7 is conveyed to the biological deodorization device 20 by the negative pressure fan, and the tail gas is discharged after the odor molecules are adsorbed and decomposed by microorganisms.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110710772.4A CN113321391A (en) | 2021-06-25 | 2021-06-25 | Urban sewer ditch sludge device and process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110710772.4A CN113321391A (en) | 2021-06-25 | 2021-06-25 | Urban sewer ditch sludge device and process |
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| CN113321391A true CN113321391A (en) | 2021-08-31 |
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| CN202110710772.4A Pending CN113321391A (en) | 2021-06-25 | 2021-06-25 | Urban sewer ditch sludge device and process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751615A (en) * | 2022-05-18 | 2022-07-15 | 中国市政工程西南设计研究总院有限公司 | Full-flow through sludge treatment device and treatment process thereof |
| CN117069359A (en) * | 2023-09-22 | 2023-11-17 | 上海市政工程设计研究总院（集团）有限公司 | A process method for low-carbon collaborative treatment of trench sludge in sewage treatment |
| CN117563743A (en) * | 2023-12-12 | 2024-02-20 | 苏州工业园区清源华衍水务有限公司 | Channel sludge treatment system and treatment method |
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| CN216039178U (en) * | 2021-06-25 | 2022-03-15 | 南京攀科乐环保技术有限公司 | Urban sewer dredging sludge device |
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| KR100574675B1 (en) * | 2005-11-19 | 2006-04-28 | 하나환경산업 주식회사 | Recycling method of construction waste |
| CN201132156Y (en) * | 2007-12-26 | 2008-10-15 | 天津百利阳光环保设备有限公司 | Light and heavy material sorting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751615A (en) * | 2022-05-18 | 2022-07-15 | 中国市政工程西南设计研究总院有限公司 | Full-flow through sludge treatment device and treatment process thereof |
| CN117069359A (en) * | 2023-09-22 | 2023-11-17 | 上海市政工程设计研究总院（集团）有限公司 | A process method for low-carbon collaborative treatment of trench sludge in sewage treatment |
| CN117563743A (en) * | 2023-12-12 | 2024-02-20 | 苏州工业园区清源华衍水务有限公司 | Channel sludge treatment system and treatment method |
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