We supply products for the remediation and upgrading of septic tanks and gravity percolation areas and for pressurised infiltration systems using a pump and pressure pipe system or drip distribution system.

Some Useful Remediation Products

Gravity

• Replacement tank risers and covers with adapters to provide access to existing septic tanks and pump tanks
• Distribution boxes with flow adjustable weirs to feed the water to the percolation trenches by gravity
• Effluent filter screen for septic tank outlet -prevents debris from fouling distribution box and percolation pipe -tank access to clean the filter is required.
• Flow divider to split effluent by 110mm gravity pipe to two separate percolation areas or to two distribution boxes
• Flow divertor to alternate gravity flows by 110mm pipe between two percolation areas -i.e. to rest and divert water to another area

• PVC pressure pipe system which uses a smaller amount of space due to the more even spread of effluent over the area
• Drip distribution system which used the latest drip irrigation system to reduce the total area and usually the reduces the depth of soil required to treat the wastewater and all it to infiltrate into the soil.

SEE OUR PRODUCTS PAGE OR DOWNLOADS FOR MORE INFORMATION

Editorial

Internationally, there has been a big change in emphasis in how a septic tank or sewage treatment system should be designed. The soil infiltration or percolation area is now a very important component in providing the treatment of the sewage pollutants. The soil area is very often where people experience problems. For this reason, a percolation area with gravel filled finger trenches is now required to spread the wastewater more evenly below the ground so that one area does not become overloaded. The old soak-pit often became overloaded and caused wet areas at the surface.

Septic tank systems rely on the soil to provide treatment for the wastewater effluent from the tank. The septic tank should retain the solids and sanitary products from the premises so they can be removed when the tank is pumped or de-sludged. The soil system of both septic tanks and sewage treatment systems should be allowed to drain freely at all costs. Many old tanks can be improved by adding a filter screen to the tank or downstream of the tank. This can also be done in conjunction with the addition of a percolation area or pumped percolation system which requires a smaller area due to better distribution over the soil.

The reasons for problems with septic tanks and sewage treatment systems can be a single problem or a combination of many factors such as leaking tank, overloaded soil due to surface water entering or a clogged soakpit etc. As a result, a proper solution can only be proposed following an assessment of the existing system. The national survey to be undertaken, will concentrate on areas with the highest risk to public health and to the environment. The risk could be identified from evidence of faecal contamination in wells or streams due poor soil treatment. For this reason, septic tanks with no history of problems, especially in areas with free-draining soils or sink holes, may not mean that there is no pollution occurring.

The good news is that there are solutions available to solve most if not all existing problems. New soil infiltration area technologies such as pumped polishing filters and drip distribution systems are available when space availability is a problem.