Product Description




I. Product Definition
Introducing the QDPP Integrated Sewage Treatment Equipment by Shandong Zhongqiao Enlightenment Environmental Protection Equipment Co, Ltd. - an extraordinary marvel of modern engineering. This masterpiece is crafted with the utmost precision, utilizing pioneering high-molecular materials. The equipment embodies cutting-edge innovation, molded into a seamless, single-piece tank that represents the apex of efficiency and technology. Our visionary R&D team has ingeniously adapted and refined eminent Western technologies. Specifically designed to meet the unique sewage conditions and discharge standards of rural China, the series includes versatile models like Zhong Qiao Tank Horizontal Tank A/B, Vertical Tank A/B, and Hollow Tank, each tailored for optimal performance.
II. Raw Materials
Engineered with excellence, QDPP equipment harnesses the formidable power of high-modulus polypropylene, designed for optimal performance in subterranean drainage and wastewater treatment. This extraordinary material, with an impressive elastic modulus surpassing 1500 MPa, significantly enhances the product's ring stiffness, far outstripping HDPE's 800 MPa. A testament to its remarkable structural integrity and lasting durability.
Our polypropylene is characterized by a non-toxic, odorless, tasteless profile, and is celebrated for its lightweight yet robust crystalline structure. Boasting a remarkably low density of 0.90-0.91 g/cm³, it ranks among the lightest plastics available. Its exceptional water stability, with an absorption rate of just 0.01%, coupled with a molecular weight ranging from 80,000 to 150,000, ensures unparalleled molding capabilities and a stunning, glistening finish.
Blessed with exceptional chemical stability, polypropylene withstands a wide range of chemical agents. Though resistant to many, it is susceptible to erosion by concentrated sulfuric and nitric acids. While it may soften in the presence of certain hydrocarbons, its superior crystallinity ensures heightened chemical stability. This makes it an ideal choice for crafting corrosion-resistant chemical equipment and components.
This extraordinary non-toxic, odorless polymer is renowned for its low density and superior mechanical properties. It excels in strength, rigidity, hardness, and thermal resistance, outperforming low-density polyethylene, and remains functional at temperatures around 100°C. Its impressive dielectric properties and high-frequency insulation remain unaffected by humidity, making it a versatile material for numerous industrial applications.
Polypropylene's unmatched resilience against common acids, bases, and organic solvents makes it an ideal material for food utensils and other demanding applications that require robust chemical resistance.
PPH, a high molecular weight homopolypropylene, is distinguished by its low melt flow rate and refined crystalline structure achieved through β-modification. With excellent chemical resistance, high-temperature endurance, remarkable creep resistance, and outstanding low-temperature impact resistance, it is indispensable for challenging industrial applications.
II. Characteristics
1. Safety
The tank is manufactured using a spiral extrusion winding-one-time forming technology. The tank is formed directly from granular raw materials through molds, achieving a seamless, one-piece structure.
2. Durability |
The raw materials include UV-resistant and anti-aging additives, addressing the issue of short outdoor service life for plastic equipment and significantly extending its lifespan.
3. Economic Efficiency |
The tank can have a thickness of over 80 mm, with a tapered cross-section. The thickness can be increased in areas with greater stress at the lower part of the tank, optimizing the use of materials where needed.
4. Corrosion Resistance
It exhibits excellent resistance to various acids and bases and can store most organic and inorganic acids, bases, salts, and some organic solvents (see the corrosion data sheet for details).
5. Flexible and Convenient Installation Lightweight, easy to install and maintain, non-toxic, non-scaling, and non-contaminating. It is user-friendly, customizable according to customer needs, and allows for flexible overall installation. 6. Wide Application Range |
Perfectly crafted for deployment across a diverse array of sectors, this equipment excels in wastewater management,
air quality control, the evolving lithium battery technologies, the chemical industry, metallurgy, electroplating,
chemical fibers, dyeing, environmental conservation, petroleum processing, electronics, pharmaceuticals, food production, oil industries, light manufacturing, acid creation, acid cleaning, and
battery material development.
IV. Structural Appearance
Main Equipment Color: Our equipment showcases a sleek, contemporary light gray, with customization options available to align perfectly with specific client preferences.
Equipment Structure: Choose between a robust solid wall structure or an innovative hollow structure to precisely meet your unique needs and specifications.
V. Production Process
The production of QDPP equipment is a testament to sophistication, featuring one-time forming coupled with advanced multiple winding techniques. With wall thickness ranging from 10-80 mm, it is adaptable to diverse application requirements. The process involves winding a base layer, ensuring complete crystallization, followed by surface reheating before additional layers are applied. The number and thickness of these layers are meticulously designed to meet specific joint and performance criteria, ensuring excellence in every aspect.
VI. Welding Process
Experience the pinnacle of welding mastery with our advanced imported automatic extrusion welding machines. These state-of-the-art machines provide exceptionally robust welds precisely where the tank encounters the most stress, ensuring efficiency of the highest order. Our pioneering process intricately thermally fuses new PPH pellets, perfectly matching the tank's material at the weld seams. This meticulous method produces an extraordinarily solid and cohesive bond between the tank's bottom and body, significantly enhancing durability and performance.

Key Features and Advantages:
1. Our innovative mechanization and automation processes assure consistently superior product quality that not only meets, but exceeds, industry standards, providing unparalleled reliability.
2. Every weld seam is crafted with precision to align with the product's specific stress dynamics, optimizing their integrity and robustness for unmatched durability.
3. The exceptional integrity of our products guarantees that welds become an inseparable part of the tank, offering extraordinary resistance to corrosion and a leak-proof performance that endures over time.
4. Enjoy reduced flash and impeccably smooth seams, enhancing functionality and offering a strikingly elegant aesthetic, elevating your product's visual appeal.
5. Our PPH pellets are expertly infused with UV absorbers, providing robust protection against aging, dramatically extending the lifespan of your equipment.
Precision Internal Welding
Our internal welding is driven by cutting-edge automatic long-arm extrusion welding technology, a cornerstone of our production process. By using new PPH pellets identical to the tank material, we ensure seamless thermal fusion at the internal weld seams. This fortifies the connection between the tank bottom and body, mirroring the principles of our external welding with specialized equipment for outstanding results.
Distinctive Features:
1. Our highly mechanized and automated process consistently guarantees unparalleled product quality, setting a new benchmark of excellence in the industry.
2. Our weld seams are meticulously engineered to align with the unique stress characteristics of each product, maximizing their structural integrity and resilience.
3. With superior product integrity, our welds seamlessly integrate into the tank, ensuring exceptional corrosion resistance and reliable leak-proof performance.
4. Experience reduced flash and exquisitely smooth seams that provide both functionality and an elegant aesthetic, enhancing the overall product design.
5. Enhanced with UV absorbers, our PPH pellets prevent aging and significantly extend the service life of our equipment.
Performance Parameters
Polypropylene (PPH) Performance Table |
Item |
Typical Value |
Unit |
Test Method |
Density |
905 |
k/m3 |
ISO 1183 |
Melt Flow Rate (230°C/2.16 kg) |
0.3 |
g/10 min |
ISO1133 |
Melt Flow Rate (190ºC/5.0kg) |
0.6 |
g/10 min |
ISO 1133 |
Yield Stress (50 mm/min) |
36 |
MPa |
ISO 527-2 |
Yield Strain (50 mm/min) |
10 |
% |
ISO 527-2 |
Tensile Modulus (1 mm/min) |
1650 |
MPa |
ISO 527-2 |
Charpy Impact Strength, Notched (+23°C) |
7 |
KJ/m² |
ISO 179/1eA |
Notched Impact Strength (-20°C) |
2 |
KJ/m² |
ISO 179/1eA |
Vicat Softening Temperature B (50N) |
95 |
ºC |
ISO 306 |

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Processing parameter requirement |
Parameters/Index
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Inflow water quality mg/L(ppm) |
Outflow water requirement mg/L(ppm) |
COD |
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BOD |
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TSS |
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Ammonia nitrogen |
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TN |
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TP |
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PH |
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E.coli |
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Others |
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Water flow |
m³/d |
On/Underground |
If underground,pls indicate the depth |
If integrated with control room |
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Appearance requirement |
Simple appearance, container appearance, Zhong qiao container appearance, please refer to our brochure for details |
Voltage, HZ, Electric phase |
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Distance between regulating pool and equipment |
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Flange interface specifications |
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Special requirements |
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