How to choose the most suitable WWTP for your home? (Power, number of people, groundwater).

How to choose the most suitable WWTP for your home? (Capacity, Population and Groundwater)

Are you planning to install a biological wastewater treatment plant (WWTP) in your private home, but are lost in conflicting advice and complicated terms? You have come to the right place. Choosing the right drainage solution is a responsible decision that will affect your everyday life and your wallet for decades.

Although each situation is individual, there are several basic rules that must be taken into account in order for the installation to work perfectly and without unnecessary headaches.

1. Number of people and daily consumption

The number of people in the house is the main factor that determines the required power of the device. If the plant is too small, it will not cope with the volume of wastewater and will cause pollution, but if the plant is too large, it will not receive enough biological load for microorganisms to survive.

Let's look at a simple example:

If there are 4 people living in a house and the average water consumption is 150 liters per day per person, then the total volume of wastewater generated will be:

• 4 people x 150 liters = 600 liters per day (or 0.6 m³/d).

That is why it is important to evaluate the real habits of your family and the frequency of visitors before purchasing in order to choose a device that can handle the daily flow.

2. Soil type and groundwater level

In Latvia's changing climate and terrain, the groundwater level is often high, especially in spring and autumn. A soil analysis should be performed before installing the equipment.

If you have high groundwater or clay soil that does not absorb moisture well, the durability of the equipment is of great importance. In such situations, it is especially important to choose a device with a durable fiberglass body, which will not deform under the influence of earth pressure and moisture, and will not rust, unlike cheaper alternatives.

3. General requirements: noise, smell and design

The biggest concerns for private house owners are usually related to unpleasant smells and noise in the garden. Modern and high-quality equipment should not cause discomfort.

In innovative solutions, aerobic microorganisms biologically break down pollutants without emitting an unpleasant smell. The treated wastewater is harmless and odorless, but the device itself works quietly and is environmentally friendly. In addition, systems consisting of only one tank do not require complex earthworks and take up less space in your yard.

Our solution: NVB Biological treatment plant

For the Latvian market and local conditions, we offer a proven value - reagent-free biological wastewater treatment plant (NVB). They are designed for efficient and silent treatment of domestic wastewater, combining reliability and easy service.

4. Latvian regulatory acts and harmonization

When purchasing and installing biological treatment equipment, the legislation of Latvia and the European Union must be strictly observed. First of all, make sure that the chosen equipment has a CE mark and a Declaration of Performance (compliance with the LVS EN 12566-3 standard) - without these documents it will not be possible to legally install and put the equipment into operation.

Secondly, the construction of the equipment must always be coordinated with the local building authority and, depending on the regulations of the municipality and where the purified water is planned to be discharged (infiltration field, pond or drainage ditch), coordination with the State Environmental Service (VVD) may also be necessary. By choosing a certified device, such as the models we offer, and engaging knowledgeable installers, all the necessary documentation will already be prepared and the bureaucratic process will go smoothly.

Why choose NVB for your home?

• Durability and durability: All main structural elements (both internal and external) are made of fiberglass, which does not rust and withstands high soil pressure.
• Compact and simple: The device consists of one tank. No additional primary cleaning devices or complicated maintenance are required.
• No smell and no noise: Aerobic microorganisms do their work invisibly, guaranteeing an ecologically clean result in the garden.

Technical parameters of the base model (NVB)