Email Us
han@huayuwtr.com
The PP tank generally has a three grid series structure for sewage treatment based on anaerobic fermentation and gravity precipitation
First grid: Primary sedimentation and anaerobic fermentation
·Sewage enters, with solid-liquid stratification: upper layer of manure skin, middle layer of clear liquid, and lower layer of ·manure residue.
·Anaerobic bacteria decompose organic matter and kill some bacterial eggs.
Second grid: Deep anaerobic digestion
·Middle layer fecal fluid flows into the fecal pipe
·Continue anaerobic decomposition and significantly reduce residual suspended solids.
Section 3: Clarification and Storage
·Further clarification of water quality, which can be discharged or used for agriculture after meeting the standards
·Regularly (1-2 years) clean the sludge.
Ingredients:
·Main material: Polypropylene (PP) plastic pellets
·Auxiliary materials:
① Recycled materials (added in proportion)
② Adding antioxidants, light stabilizers, colorants, etc. to enhance lifespan and appearance
Mold：
·Structure: Split type (upper tank body, lower tank body, partition, top cover), multi cavity mold
·Classification surface: sealing groove+sealing ring position, ensuring the sealing performance of the joint
·Wall thickness: ≥ 3.0mm (standard 1.0~1.5m ³ specification)
·Strengthening ribs: inner and outer rings+longitudinal ribs to enhance ring stiffness and compression resistance
·Fecal pipe hole, inlet and outlet, cleaning hole: integrated injection molding
·Cooling system: evenly distribute water and shorten cycle time
Injection molding：
·Mold clamping: Injection molding machine (800~1600T) locks the mold, pressure 120~160MPa
·Plasticization: barrel heating (180-220 ℃), screw rotation to melt PE
·Injection: Inject the melt adhesive into the mold cavity at high pressure and high speed (100-140MPa)
·Pressure holding: 80-100MPa, 10-30s, compensating for shrinkage
·Cooling: Mold temperature 30-50 ℃, water cooling, cycle 40-70s/mold
·Mold opening → ejection → retrieval: The robotic arm automatically retrieves the upper and lower pool bodies
·Remote residential and villa areas: Independent residences or high-end villa clusters that are far away from the city center and not connected to the municipal sewage system.
·Industrial parks and factories: factories and production workshops located in suburban areas, especially the living quarters of employees in chemical and textile factories.
·Construction sites and mining camps: temporary or long-term stationed engineering project departments and living camps in the wilderness of mining operation areas.
·Tourist resorts and ecological parks: hotels and vacation homes located in natural scenic areas, beaches, or mountainous regions.
·Rural and small town renovation: Government initiated rural dry toilet renovation projects, or community health infrastructure in developing countries.
·Highway service areas and gas stations: Gas stations and rest areas located near highways and far from towns.
·Schools, hospitals, and public structures: Public facilities such as schools and clinics located in remote areas of towns and villages.
| Model | Capacity（m3） | L*W*H（mm） | Number of people |
| PP-0.6 | 0.6 | 1572*832*785 | 2-3 |
| PP-0.8 | 0.8 | 1540*980*920 | 3-4 |
| PP-1.0 | 1 | 1720*960*921 | 3-5 |
| PP-1.5 | 1.5 | 2009*1082*1037 | 8-10 |
| PP-2.0 | 2 | 2355*1210*1165 | 13-15 |
| PP-2.5 | 2.5 | 2750*1210*1180 | 13-15 |
Project Background
This is a Southeast Asian urban and rural renovation project in Malaysia. The local area is facing problems such as direct discharge of domestic sewage, dirty and disorderly environment, and groundwater pollution. The customer requires low-cost, easy to install, corrosion-resistant, and maintenance free small-scale decentralized sewage treatment facilities. The bulk purchase of PP integral injection molded septic tanks will be used for sewage purification treatment in residential areas, homestays, and self built houses in rural areas.
·Export destinations: Philippines, Saudi Arabia, Indonesia, etc
·Product Type: PP Plastic Septic Tank (Household Underground PP Septic Tank)
·Capacity specification: 1.0m ³ -2.5m ³, covering the usage needs of 3-15 people
·Main uses: Domestic sewage treatment, rural sanitation renovation
·Delivery status: Successfully delivered, customer satisfaction 100%
The PP triple grid septic tank exported this time is made of high-purity polypropylene (PP) material, which is manufactured by large-scale injection molding machine and has the following core parameters:
·Structural form: Three grid series connection, achieving step-by-step anaerobic fermentation treatment through intermediate connecting pipes
·Sealing performance: Integrated molding process, good sealing performance, eliminating the risk of leakage
·Corrosion resistance: PP material is acid and alkali resistant, anti-aging, and suitable for underground burial environment
·Design lifespan: not less than 20 years
·Installation method: Underground, can be used on the same day of installation
This export adopts the standard sea container transportation scheme:
Packaging method: PE plastic film waterproof wrapping+waterproof oilcloth coverage+corner protection+steel saddle fixation
Transportation method: Sea freight, loaded in standard 20ft/40ft containers
Protective measures: Multi layer protection against moisture, collision, and corrosion to ensure product integrity after long-distance sea transportation
International Certification and Standards
The material meets the ISO 9001 quality standard
CE certification (EU market access)
Complies with the requirements of EN 12566-1 international standard
Passed SGS/BV third-party factory audit
·Lightweight design: weighing only about 30% of traditional concrete septic tanks, significantly reducing transportation and installation costs
·Strong corrosion resistance: PP material has excellent resistance to chemicals in sewage and underground soil environment
·Excellent sealing performance: integrated injection molding, no leakage risk, protecting groundwater resources
·Quick installation: No need for heavy equipment, on-site assembly can be put into use
·Environmentally friendly: recyclable, with lower carbon emissions throughout the entire lifecycle
With the continuous growth of global demand for decentralized sewage treatment solutions, PP septic tanks are becoming an ideal choice for rural sanitation renovation and off grid infrastructure projects. Our company is committed to providing high-quality and cost-effective PP septic tank products and customized solutions for global customers.
If you need to learn more about our products or discuss cooperation, please feel free to contact us at any time.
