Product Description




I. Product Definition
Introducing the groundbreaking QDPP Integrated Sewage Treatment Equipment, a marvel of engineering excellence by Shandong Zhongqiao Enlightenment Environmental Protection Equipment Co, Ltd. Masterfully crafted with the latest high-molecular materials, this equipment epitomizes innovation and unparalleled efficiency. Our visionary R&D team has ingeniously molded it into a seamless, single-piece tank, pushing boundaries by integrating superior Western technologies. Designed with precision, this forward-thinking series specifically addresses rural China's unique sewage conditions and discharge standards. Discover versatile models such as the Zhong Qiao Tank Horizontal Tank A/B, Vertical Tank A/B, and Hollow Tank, meticulously created to meet diverse requirements.
II. Raw Materials
Harnessing the formidable strength of high-modulus polypropylene, the QDPP equipment is engineered for superior performance in subterranean drainage and wastewater treatment applications. This remarkable material boasts an outstanding elastic modulus of ≥1500 MPa, far surpassing HDPE's 800 MPa, dramatically enhancing the product's ring stiffness. This highlights its unparalleled structural integrity and enduring durability.
Our polypropylene is a non-toxic, odorless, and tasteless polymer, celebrated for its lightweight nature and superior crystalline structure. With an exceptionally low density of only 0.90-0.91 g/cm³, it ranks among the lightest plastics available. Its extraordinary stability in water, with an absorption rate of a mere 0.01%, coupled with a molecular weight ranging between 80,000 to 150,000, ensures excellent molding capabilities and a lustrous, appealing finish.
Polypropylene's exceptional chemical stability makes it resilient against a broad spectrum of chemical agents. While it withstands many, it is susceptible to erosion by concentrated sulfuric and nitric acids. It may soften with certain hydrocarbons, but its heightened crystallinity enhances chemical stability, making it an ideal choice for corrosion-resistant chemical equipment and components.
This non-toxic, odor-free polymer is renowned for its low density and outstanding mechanical properties. It excels in strength, rigidity, hardness, and thermal resistance compared to low-density polyethylene, maintaining its functionality at temperatures around 100°C. Its impressive dielectric properties and high-frequency insulation remain unaffected by humidity, making it a versatile choice for numerous industrial applications.
Its resilience against common acids, bases, and organic solvents makes polypropylene an exceptional material choice for food utensils and other applications demanding robust chemical resistance.
PPH, a high molecular weight homopolypropylene, features a low melt flow rate and a refined crystalline structure through β-modification. With its superior chemical resistance, remarkable high-temperature endurance, impressive creep resistance, and exceptional low-temperature impact resistance, it is indispensable for demanding 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 suited for deployment across a wide variety of sectors, including wastewater management,
air quality control, the advancing 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 predominantly flaunts a sleek, contemporary light gray, with options for customization available to satisfy specific client preferences.
Equipment Structure: Opt between a robust solid wall structure or an innovative hollow structure to precisely meet your specific requirements.
V. Production Process
The QDPP equipment undergoes a sophisticated production process, showcasing one-time forming integrated with advanced multiple winding techniques. Wall thickness ranges from 10-80 mm, ensuring adaptability to diverse application needs. This involves winding a base layer, ensuring full crystallization, then reheating the surface before applying additional layers. The number and thickness of these layers are meticulously crafted to meet specific joint and performance criteria.
VI. Welding Process
Embark on a journey to the pinnacle of welding craftsmanship with our revolutionary imported automatic extrusion welding machines. These advanced marvels ensure impervious welds precisely where the tank faces maximum strain, delivering extraordinary efficacy. Through our pioneering technique, we meticulously thermally merge fresh PPH pellets, perfectly harmonizing with the tank's material at the crucial weld seams. This seamless integration results in an extraordinarily robust and cohesive bond between the tank's bottom and its body, significantly enhancing both longevity and efficiency.

Key Features and Advantages:
1. Our trailblazing mechanization and automation processes assure a consistently superior product quality that not only meets but surpasses industry benchmarks, delivering unrivaled dependability that you can trust.
2. Every weld seam is crafted with meticulous precision, tailored to align with the product's stress dynamics, optimizing their integrity and robustness for unparalleled durability.
3. The exceptional integrity of our products ensures that welds become an inseparable part of the tank, delivering outstanding resistance to corrosion and a leak-proof performance that endures over time.
4. Revel in reduced flash and impeccably smooth seams that enhance functionality while presenting a visually striking aesthetic, amplifying your product's allure.
5. Our PPH pellets are expertly infused with UV absorbers, offering robust protection against aging and dramatically prolonging the lifespan of your equipment.
Precision Internal Welding
Our internal welding harnesses state-of-the-art automatic long-arm extrusion welding technology, a cornerstone of our production methodology. By utilizing fresh PPH pellets identical to the tank material, we guarantee a seamless thermal fusion at the internal weld seams. This fortifies the union between the tank's bottom and body, reflecting the principles of our external welding with specialized equipment for superior outcomes.
Distinctive Features:
1. Our highly mechanized and automated process consistently guarantees unparalleled product quality, setting a new bar of excellence within 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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