Grey Water Treatment Systems Nz

If a greywater treatment system dgts is being used rather than a greywater diversion device gwdd the waste water from the kitchen can be included.

Grey water treatment systems nz.

Greywater systems must comply with building code requirements. As an exceptional septic tank alternative naturalflow is the wastewater solution for new zealand s rural homes and businesses. These units are typically comprised of a plastic gully with a grating a submersible pump which automatically moves the grey water to the irrigation system. Purchase ready made grey water systems for your home.

A grey water recycling system will filter and clean around two thirds of your water use ready for use in a dripper feed irrigation system. How it works see second image for diagram step 1. Any on site wastewater treatment system must meet performance requirements for construction and operation of the building code. Probably the most common form of blackwater system in new zealand is the septic tank where some of the solids are digested by anaerobic bacteria and the remaining.

How a greywater system works. All greywater diversion systems must use by law a subsurface or substrata irrigation discharge system such as drip irrigation. Water from kitchen sinks was found to be unsafe for reuse because of the risk of contamination from organic matter such as bacteria from meat. Save your septic system if you have one by diverting grey water from it.

Blackwater is the wastewater from the kitchen sink and toilets although blackwater systems usually treat greywater as well. Throughout new zealand many are already enjoying the benefits of reusing grey water. Grey water comes from baths showers laundries dishwashers etc. Some local authorities in new zealand encourage greywater recycling but other authorities do not.

The average kiwi spends 7 minutes in a shower which depending on the shower head can equate to between 7 and 14 litres per minute. The greywater is held briefly in the tank before being discharged to an irrigation or treatment. If the system is designed to as nzs 1547 the requirements of the code will be met. Use water twice and return it to the environment naturally.

Testing by environmental science and research esr on greywater systems in new zealand found the presence of bacteria which can harm your health even in treated greywater. In new zealand commercially manufactured grey water systems that meet the requirements for treatment and reuse of water are available. Greywater systems used for toilet flushing should have a treatment system. Blackwater systems are also available in new zealand.

These robust power free sewage treatment systems in nz have very little maintenance requirements and are cost effective throughout their lifetime making them good replacements for traditional septic tanks.