When the valve is open greywater flows directly to the mains sewage or septic tank.
Grey water treatment systems nz.
Blackwater systems are also available in new zealand.
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.
All greywater diversion systems must use by law a subsurface or substrata irrigation discharge system such as drip irrigation.
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.
Any on site wastewater treatment system must meet performance requirements for construction and operation of the building code.
Grey water comes from baths showers laundries dishwashers etc.
The greywater is held briefly in the tank before being discharged to an irrigation or treatment.
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.
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.
Use water twice and return it to the environment naturally.
Greywater systems used for toilet flushing should have a treatment system.
Some local authorities in new zealand encourage greywater recycling but other authorities do not.
Greywater systems must comply with building code requirements.
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.
By having a grey water system homeowners and business owners can convert waste into a valuable resource.
Greywater is water from basins baths and showers that is piped to a surge tank.
Throughout new zealand many are already enjoying the benefits of reusing grey water.
Save your septic system if you have one by diverting grey water from it.
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.
In new zealand commercially manufactured grey water systems that meet the requirements for treatment and reuse of water are available.
Purchase ready made grey water systems for your home.
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.
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.
If the system is designed to as nzs 1547 the requirements of the code will be met.
