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To protect the environment and ensure the longevity and optimal performance of your HSTP we recommend that you use environment friendly detergents and cleaners.

The Treatment Plant uses natural bacteria to break down effluent prior to final disinfection through either an online chlorinator or ultra violet sterilisation. Anaerobic bacteria are used in the primary chamber of the treatment system to break down the solids. Wastewater passes through a suspended solids filter and is pumped through a poly raft inside the sand media filter bed. Natural aerobic bacteria are present in the sand media filtration bed and are used to treat the fine suspended solids. Wastewater flows back into the fourth chamber of the tank where it is clear and is pumped through the final disinfection method (chlorine or UV) out to the dispersal field.

Using cleaners and detergents that contain high levels of ammonia (eg bleach) are hazardous to the biological health of your HSTP. These types of cleaners kill off the natural bacteria and micro-organisms used to treat the primary effluent. Reduction of the natural bacteria of your HSTP will result in a much lower level of primary treatment and may produce unpleasant “septic” odours. High levels of nitrogen and phosphorous also contribute to the growth of algae and other less desirable micro-organisms in the environment eg. Algal growth in waterways.

Environment friendly cleaners are those cleaners that either use no chemicals or reduced levels of chemicals. Conventional cleaning products may use labelling that indicates the phosphorous levels of the product. Look for the following symbols on the packaging of cleaning products:

P

This symbol lets you know that the product complies with the agreed Australian industry standard on phosphorous, which imposes a maximum content of 7.8 grams per wash. The standard is designed to reduce the amount of phosphorous entering Australian waterways.

NP

This symbol lets you know that the product contains no added phosphorous. Levels of 0.5% may be present.

There are an increasing number of “green” cleaners and detergents available including products that are chemical free and made from all natural ingredients. Other cleaning products do not require the use of any cleaning products, such as ‘ENJO’. There are also “homemade” natural cleaning alternatives such as vinegar, bi-carb soda etc. The internet also has many websites dedicated to alternative cleaners.