Plastic septic systems

Types of Plastic Septic Systems

Plastic septic systems are a modern and efficient alternative to traditional concrete and steel septic tanks. Like their conventional counterparts, they still store and treat household wastewater when municipal sewage systems are unavailable.

Plastic septic tanks are usually manufactured from high-density polyethylene (HDPE) or polypropylene (PP), designed to be lightweight yet durable plastics. Newer models even include pre-installed effluent filters or distribution boxes within the tank itself to help control the flow of wastewater in the leach field.

Some common types of plastic septic systems include the following:

• Plastic Septic Tanks: Plastic septic tanks are the underground containers designed to store and treat wastewater from households. Like traditional septic tanks, plastic models have separate compartments for settling solids, decomposing organic material, and clear effluent. They are typically installed in rural or suburban areas without access to centralized sewage systems. Plastic septic tanks work by allowing gravitational separation of solids, liquids, and gases. Once treated, the effluent percolates through soil or rocks in a leach field, where remaining bacteria and microorganisms further break down any residual contaminants.
• Septic Chamber Systems: Plastic septic chamber systems are an alternative method for managing wastewater. They use lightweight, interlocking plastic chambers to replace traditional leach fields. Like leach fields, septic chamber systems provide the same treatment process while using less surface area. Plastic septic chambers are especially useful in sites with limited space or where preserving soil integrity is essential. Once effluents are deposited into the chambers, the surrounding soil will carry out the rest of the treatment process.
• Plastic Cesspools: A plastic cesspool is an underground sum or reservoir created for the disposal of liquid waste through absorption into the surrounding land. Plastic cesspools, like traditional ones, serve as temporary storage facilities for wastewater until it can be absorbed by the earth. Unlike septic tanks that treat effluents, plastic cesspools offer no treatment method, potentially posing greater environmental threats if full, hence the use of plastic materials. Many older cesspools are made from concrete and may require immediate repairs or replacements. Some may not even be allowed under law regulations after certain years.
• Combined Plastic Septic and Drywell Systems: A combined plastic septic and drywell system offers an efficient solution for wastewater management in areas with limited soil absorption capacity. On top of that, it also provides a method for treating and dispersing wastewater into the ground. This integrated system typically consists of a plastic septic tank for settling and decomposing organic material and a drywell for dispersing treated effluent. When properly designed and installed, combined septic and drywell systems provide effective wastewater treatment while minimizing environmental impacts.

Specifications & Maintenance

Some specifications to note when looking into plastic septic systems for sale are pipe and tank sizes. The exact specifications for each system will differ depending on the manufacturer, but here are some general guidelines.

• PVC pipes: PVC septic system pipes will vary in diameter from about 40mm (1.6 inches) to 160mm (6.3 inches) with corresponding lengths of up to 6m (19.69 feet) or more.
• The tank : Plastic septic tank systems will usually be between 2,000 and 20,000 liters. In terms of feet, that is roughly 600 to 8000 gallons. The size of the tank needed will depend on the number of bathrooms in the home or commercial building. One standard size is a 3000-liter tank that is 1.5 m in height and 3.5 m in diameter.

In addition to the system working properly, the key to plastic septic tank system maintenance is to emphasize doing things that do not harm the system. Here are some helpful dos and don'ts:

• Do inspect the system regularly and check for signs of unusual behavior, such as gurgling noises in the pipes. Other indications, like slow drainage or bad odors, can mean there is a blockage that needs to be fixed immediately.
• Don't put harmful chemicals down the drain. Bleach, anti-bacterial soap, and harsh cleaning products kill the good bacteria that break down waste in the septic tank.
• Do conserve water to prevent overloading the system. Spread out laundry and fix leaks and dripping faucets.
• Don't drive over or put heavy objects on the drain field. The weight can damage the pipes and prevent proper filtration of the soil.
• Do pump out the septic tank every 3 to 5 years to remove sludge and prevent build-up.
• Don't ignore signs of system failure. Taking quick action can prevent more significant problems and costly repairs.

Applications of plastic septic systems

Plastic septic tanks can be used for households, businesses, and rural properties where connecting to a mains sewer isn't possible. Here are some scenarios where plastic septic tanks are useful.

• Rural homes and cottages

  In rural areas, where houses are not linked to municipal sewage systems, plastic septic tanks are commonly used for waste disposal. These tanks allow homeowners to manage wastewater on their properties safely and effectively. In some regions, local regulations may permit or even encourage the use of plastic septic tanks as an environmentally friendly alternative to conventional sewage systems.

• Country homes and second homes

  People who live in rural areas or own country homes as second residences often choose plastic septic tanks for waste management. Plastic septic tanks offer a practical solution for managing sewage in areas where connection to municipal sewers is unavailable. It enables countryside residents to enjoy their homes and ensure proper wastewater treatment.

• Holiday homes and cabins

  Plastic septic tanks are commonly incorporated into holiday homes and cabin designs to provide a self-sufficient waste disposal solution. Holiday home and cabin owners require an efficient and odorless system to handle wastewater, especially during peak vacation periods.

• New build rural properties

  Plastic septic tanks are commonly incorporated into new build rural properties where connection to the mains sewer is not feasible or economically viable. Rural homes rely on septic systems for wastewater treatment, and plastic tanks offer a practical and compliant solution for managing sewage in rural areas.

• Off-grid accommodation

  Plastic septic tanks are commonly used in off-grid accommodations such as eco-lodges, glamping sites, and self-catering cabins. These types of accommodations are usually located in rural or remote areas without access to municipal sewer systems. Off-grid accommodations rely on independent waste management solutions to minimize environmental impact and provide guests with a sustainable and self-sufficient experience.

• Commercial properties

  Septic tanks are commonly used in various types of commercial properties situated in rural areas or locations away from municipal sewage infrastructure. Commercial establishments such as hotels, bed and breakfasts, restaurants, and holiday parks often require effective wastewater management systems to accommodate their operations.

Plastic septic systems are gaining popularity due to their lighter weight, ease of installation, and resistance to roots and corrosion. These qualities make them a practical choice for waste management in a variety of settings.

How to choose plastic septic systems

When selecting a plastic septic tank for a specific application, it's essential to consider the key factors as follows:

• Local Regulations and Codes

  Local regulations and codes have a significant impact on septic tank choices. The tank must comply with local laws to ensure legal compliance, environmental protection, and public health. The local regulations and codes may also specify requirements for tank sizing, approved materials, installation practices, and permit procedures.

• Site Conditions

  Site conditions are applicable to selecting the size and type of the plastic septic tank. Soil type, land's topography, groundwater level, and distance from water bodies are relevant to determine whether an infiltrating/leaching septic tank or a conventional plastic septic tank works properly.

• Household Needs

  The number of bedrooms is a crucial factor affecting tank sizing. It's also important to consider future expansion plans, extra water usage, and frequency of system maintenance. If the future expansion is expected, the cost-effective solution may be installing a larger tank now.

• Environmental Considerations

  Environmental considerations play a vital role in septic tank selection, especially in sensitive ecological areas. For example, in regions with well-drained soils, conventional septic systems may work well; in areas with high groundwater levels or close proximity to water bodies, innovative systems like a holding tank may be implemented to minimize environmental impact.

• Budget Constraints

  Budget constraints are important factors affecting tank selection and system design. Whether a cost-effective solution or an investment in a dense-duty, long-lasting system is chosen, the decision is largely based on budget constraints. It's essential to carefully consider long-term costs, including maintenance and potential repair expenses, along with upfront costs, to make a financially sound decision.

Q & A

Q1: Do plastic septic systems need to be pumped?

A1: Yes, periodically pumping the tank is necessary in order to remove the buildup of sludge and scum. This helps to prevent any threats of tank damage or system failure.

Q2: What is the lifespan of a plastic septic tank?

A2: On average, if well maintained, plastic tanks can last up to 20 to 30 years. Frequent pumping and proper care of the drainage and intake pipes enhance the longevity of the tank.

Q3: What are the signs of a failing septic tank?

A3: Some obvious signs of septic tank failure include a strong odor of sewage, gurgling drains, or water pooling around the septic tank or drain field. These signs indicate system failure and users need to contact a professional immediately.

Q4: How do people dispose of waste in a plastic septic tank?

A4: Waste enters the septic tank through a drainage system which includes household wastes from sinks, toilets, and showers. The waste then travels through the septic tank’s inlet pipe into the tank.