Stackable Biogas Septic Tank with 50-Year Service Life and 30-Day Sedimentation for Villa Wastewater Treatment
Stackable Biogas Septic Tank
,50-Year Service Life Septic Tank
,30-Day Sedimentation Septic Tank
Our stackable underground PE biogas septic tank is an eco-friendly sewage purification solution specially customized for villas, holiday homes and decentralized residential projects. Produced with high-quality modified polyethylene (PE) raw material by rotational molding technology, this buried septic tank adopts a scientific multi-chamber structure to realize anaerobic fermentation, solid-liquid separation and biogas generation simultaneously. It delivers stable sewage purification performance while producing usable biogas as clean energy, perfectly matching the demand of green and low-carbon private villa construction.
The basic principle of the septic tank is to remove and kill parasite eggs and bacteria by utilizing the precipitation caused by the specific gravity of parasite eggs being greater than that of the fecal and urine mixture, combined with the principles of closed fecal anaerobic fermentation, liquefaction, ammoniation and biological antagonism. This prevents mosquitoes and flies from breeding, thereby achieving the purpose of harmless feces treatment.
- Flexible Stackable Combination: Standard tank modules can be stacked and assembled freely on site. The system scale can be adjusted easily based on villa occupancy and daily sewage output, adapting to different site shapes and space constraints.
- 50-Year Ultra-long Service Life: Made of high-performance modified PE material, the tank features outstanding anti-ageing, acid & alkali resistance and anti-corrosion capacity. It resists erosion from underground soil and sewage, avoiding cracking, leakage and deformation, and can serve up to 50 years when buried underground.
- Lightweight & Fast Installation: Much lighter than traditional concrete septic tanks. No concrete pouring, formwork or long curing time is needed. It cuts construction time, reduces labour cost and shortens the whole project schedule greatly.
- Integrated Sewage Purification + Biogas Recovery: Multi-chamber anaerobic decomposition removes organic pollutants efficiently, making the discharge water meet environmental standards. Meanwhile, biogas produced during sludge fermentation can be reused for cooking and lighting to save energy.
- High Structural Strength: Reinforced rib design on the tank wall improves compression resistance, which can bear normal earth pressure and light vehicle load, suitable for backyard and driveway burial of villas.
- Zero Leakage & Odour Isolation: Rotomolded seamless one-piece structure eliminates weld seam leakage risk, effectively blocking sewage seepage and foul odour escape to protect surrounding soil and groundwater.
Our plastic septic tank consists of three pools which are connected in the middle by a soil pipe, operating mainly through anaerobic fermentation.
| Product Name | Septic Tank / Sewage Treatment Tank |
|---|---|
| Material | HDPE + PP |
| Color | Black |
| Style | Underground |
| Type | Horizontal Sedimentation Tank |
| Sedimentation | 30 days |
| Place of Origin | Guangdong, China |
| Specification | Size | Wall Thickness | Weight (Full Set) | Material |
|---|---|---|---|---|
| 0.8 m³ | 1736 × 928 × 873 mm | 3.2 mm | 29 kgs | Polypropylene |
| 1.0 m³ | 1740 × 988 × 933 mm | 3.5 mm | 32 kgs | Polypropylene |
| 1.0 m³ | 1740 × 988 × 933 mm | 5 mm | 49 kgs | Polypropylene |
| 1.2 m³ | 1895 × 1050 × 988 mm | 4 mm | 47 kgs | Polypropylene |
| 1.5 m³ | 1960 × 1142 × 1082 mm | 4 mm | 54 kgs | Polypropylene |
| 1.5 m³ | 1960 × 1142 × 1082 mm | 5 mm | 62 kgs | Polypropylene |
| 1.5 m³ | 1960 × 1142 × 1082 mm | 7 mm | 73.5 kgs | Polypropylene |
| 2.0 m³ | 2356 × 1210 × 1180 mm | 5 mm | 80 kgs | Polypropylene |
| 2.5 m³ | 2750 × 1210 × 1180 mm | 7 mm | 129 kgs | Polypropylene |
This product is supplied by Guangdong Wanquan Construction Technology Co., Ltd. Wanquan is a professional enterprise integrating R&D, manufacturing, engineering design, installation and after-sales service for sponge city and water environment treatment systems. We are far more than a product supplier — we are a one-stop solution provider for villa decentralized sewage treatment.
Supported by our in-house technical team, we provide free site survey, customized capacity matching, pipeline layout design and construction guidance for every villa project. Our professional engineering team offers standardized on-site installation service, and complete after-sales tracking support throughout the whole project cycle. We maintain strict quality control from raw material inspection and moulding production to finished product testing, with all products passing relevant building material quality tests. Apart from septic tanks, we can also support matching supply of rainwater collection tanks, drainage channels, inspection wells and other sponge city accessories to form a coordinated water management system for villas.
Suitable for detached villas, cluster villas, mountain resorts and suburban residential areas without access to centralized municipal sewer networks, this stackable PE biogas septic tank balances sewage compliance, biogas recycling and long-term durability. Choosing Wanquan means you obtain reliable products plus full-lifecycle technical and construction services. We help global clients build safe, eco-friendly and energy-saving villa sewage treatment systems.
-
1. Are you a factory?
Yes, we have our own factory, so product quality can be ensured.
-
2. Can we visit your factory?
You and your friends are warmly welcome to visit our factory.
-
3. What is the delivery time?
Goods can be dispatched within 3 to 7 working days after we confirm your payment.
-
4. How do you guarantee the quality of your products?
We apply strict detection during production, plus strict sampling inspection on products before shipment, with intact product packaging ensured.
-
5. How do we install the tank after receiving the goods?
We will provide detailed installation instructions. If necessary, we will send technicians to assist you on site.
-
6. What trade terms do you accept?
FOB, CIF and CFR.
Black PP Plastic Underground Septic Tank with 30-Day Sedimentation for Sewage Treatment Tank Systems
Product Overview Our Black PP Plastic Septic Tank is a reliable and efficient solution for toilet sewage treatment, wastewater storage, and sewer drainage systems. It is widely used in rural households, villas, scenic spots, temporary construction sites, and decentralized sewage projects. Made of ...
Large Capacity HDPE Underground Septic Tank Biogas Septic Tank for Apartment Anaerobic Sewage Treatment
Product Overview The Vantra large-capacity HDPE biogas septic tank is a professional underground anaerobic sewage treatment facility designed for residential apartment communities and concentrated multi-family dwellings. It provides a reliable decentralized wastewater disposal solution for ...
2.5m Capacity Long Lifetime Underground Septic Tank PE Septic Tank for Household Sewage Treatment
Product Overview Our HDPE biogas septic tank is an eco-friendly on-site wastewater treatment solution designed specifically for household underground restrooms. Made of premium high-density polyethylene via seamless rotational molding, this underground unit integrates sewage sedimentation, anaerobic ...
HDPE Biogas Septic Tank Underground Septic Tank with Biogas Recovery and 30-Day Sedimentation for Household Sewage Treatment
Product Overview Our HDPE biogas septic tank is a dedicated decentralized wastewater treatment solution built for household underground restrooms. Constructed from high-density polyethylene through integrated rotational molding, this buried septic tank performs solid-liquid separation, anaerobic ...
