Sludge discharge pipes, water distribution pipes, and aero-ventilation pipes—perforated pipe series
We primarily provide a comprehensive range of ancillary products for water supply and wastewater treatment systems, including trash interception, chemical dosing and reaction, sedimentation, water collection, sludge removal, and filtration, as well as biological media and aerators for wastewater treatment projects.
Material: UPVC, ABS, HDPE
Pipe diameter: DN15–DN250
Pressure rating: 0.6 MPa / 0.8 MPa / 1.0 MPa
Features: Under operating conditions such as sludge removal, water distribution, and aeration, perforated plastic pipes exhibit low flow resistance, smooth inner walls that resist sludge accumulation and biofilm formation, and resistance to clogging of the perforations—making them a superior replacement for traditional perforated pipes made of cast iron or carbon steel.
| Name/ Project | Perforated pipe hole diameter d (mm) | Hole spacing (m) | Requirements |
| Sludge discharge pipe | 20.0~30.0 | 0.30~0.80 | The holes are arranged on both sides of the tube at a 45° angle to the central vertical line, in a staggered pattern. |
| Water distribution pipe | 9.0~12.0 | 0.1~0.25 | |
| Aeration pipe | 2.0~5.0 | 0.1~0.2 |
Perforated and Flat-Head Sludge Discharge Pipes
1. Sludge discharge pipes are used at the bottom of the reaction tank to remove sludge; they can be configured either with perforated pipe bodies or with flat suction nozzles. The operating principle relies on the hydrostatic pressure difference between the water level and the outlet of the sludge discharge pipe to automatically remove settled sludge from the tank.
2. Mud discharge holes of equal aperture shall be uniformly arranged on both sides of the opening, with a 90° intersection angle between the two sets of holes, and the material shall be OCr18Ni9Ti (SUS304).
3. The sludge-suction flat nozzle is installed at the end of the sludge discharge branch pipe, with a threaded connection that allows for adjustment. Its features include a flat suction passage, elimination of dead zones in sludge discharge, minimal water loss, easy installation, and long service life.
| Nominal diameter DN | Outer diameter D | Wall thickness b | Nominal pressure MPa | External dimensions L |
| 80 | 90 | 3 | 1.0 | 1000~6000 |
| 100 | 110 | 3.2 | 1.0 | 1000~6000 |
| 125 | 140 | 3.5 | 1.0 | 1000~6000 |
| 150 | 160 | 4 | 1.0 | 1000~6000 |
| 200 | 225 | 5 | 1.0 | 1000~6000 |
| 250 | 280 | 6 | 1.0 | 1000~4000 |
| 300 | 315 | 7 | 1.0 | 1000~4000 |
Meticulous Design
- Customized Drainage Treatment Blueprint
Leveraging a highly professional team and extensive experience, we meticulously design water supply and wastewater treatment solutions tailored to the specific needs of each region and project. Our comprehensive offerings include multi-system designs for debris interception, chemical dosing and reaction, and other critical processes, providing scientifically sound, customized engineering design services for wastewater treatment projects.
Diverse Products
- Forging a powerful tool for wastewater treatment
As a specialized manufacturer of water supply and drainage treatment equipment and materials, we offer a comprehensive range of complementary products, including systems for water supply and drainage treatment as well as bio-media and aerators tailored for wastewater treatment projects. Our extensive product portfolio meets a wide variety of application needs.
Professional Installation
- Ensure the drainage system operates smoothly
We boast a professional installation team that provides efficient installation services to customers across more than 20 provinces (including municipalities directly under the central government), as well as Hong Kong, Macao, and Southeast Asia. Adhering rigorously to standardized procedures, we ensure precise and flawless installation of water supply and wastewater treatment equipment, thereby guaranteeing stable system operation.
Keywords: trash-rack equipment, sedimentation equipment, flap-valve filter bed
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Yuhuan Longxi Water Purification Equipment Co., Ltd.
Phone: +86-576-87418379 / 87423632
E-mail: cnzhlj@163.com
Fax: +86-576-87418269
Address: No. 6, Huinhai North Road, Shamen Town, Yuhuan City, Taizhou City, Zhejiang Province, China.
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