the system

The Award Winning Newtreat "Super System" treats greywater from kitchens/galleys, laundries and bathrooms.

For further, specific plumbing (and electrical) requirements please refer to Frequently Asked Questions – "FAQ" – located on this web site.

Greywater from kitchens, bathrooms and the laundry is initially diverted to “a holding pipe(s)” generally located under the vessel – as is the common practice with “blackwater” storage.

Electro-Chemical Treatment Process

Once sufficient greywater has been collected in the holding tanks located beneath the vessel, the greywater is pumped to the Newtreat System to be treated.

Greywater is pumped from the holding tank(s) installed beneath the houseboat to the Newtreat "Reaction" Chamber. The chamber contains an Electrolytic Treatment Module (plate set consisting of a number of plates) which treats water by controlled electro-chemical reaction. The plate set is powered by extra low voltage DC.

The key plates are iron and aluminium. The iron electrodes energise first - driving iron ions into the solution. These ions combine with chemical impurities precipitating them from the solution in a very insoluble form. Heavy metals, fats and greases, volatile organic compounds and other pollutants are removed.

Then the aluminium electrodes energise - driving aluminium into the solution to clarify it. This has the same effect as adding alum. Then the solution is pumped into the second "Settling Chamber" for settling.

After settling, the clear water is "polished" by a cartridge filter before passing through an ultra violet light which kills any remaining bacteria. Treated water is then dispersed into the river.

After every five treatment processes "inert sludge" emanating from the rigorous treatment process is sent to the houseboats existing "Black Tank". This connection is required to be plumbed when installation occurs.

The Newtreat Electronic Control Unit
A “smart” control system completely automates the entire process.

Technical Specifications
Stainless Steel treatment chamber:
Length: 2045mm
Height: 670mm
Width: 220mm

Greywater “Holding” Pipe
Our greywater holding tank system is based on established on blackwater holding tank methods commonly used on houseboats.
It should be noted that Newtreat is following requirements contained within the Australian Standard AS 4995 – 2009 “Greywater treatment systems for vessels operated on inland waters.”

The Australian Standard [Treated Greywater (c)] stipulates: “Greywater treatment systems incorporating a pre-treatment storage facility shall have a combined storage and treatment capacity capable of handling 75% of the expected daily capacity of the vessel during a 1 h period.”

The Australian Standard [Capacity A2.2] also stipulates: “The volume of greywater capable of being treated by the system, based on a minimum production rate of 150L per person per day. For example, a 12 berth vessel will produce 1800 L/day (i.e. 12 x 150 L = 1800 L/day).”

Again, it is important to note the above requirements have been stipulated in the Australian Standard. Newtreat has adapted the requirements in order to comply.

We recommend the use of standard DWV/300mm x 6 metre/PVC pipes/s – similar to that regularly used to store blackwater under many houseboats. One length of 300mm x 6m “holding pipe” could be expected to hold around 424 litres of untreated greywater. With a weight of around 424 kilograms when, and if ever, full.

The following table may be of assistance in designing the greywater storage for your vessel.

“Sludge” Holding Pipe
In addition, we recommend a separate 300mm x 3 metre pipe to hold “sludge” resulting from the treatment process.

Power Requirement

To simplify installation, the system has been designed to plug into a single 240 volt outlet available on most vessels.

It is preferable that the inverter providing the 240 volts from the vessels battery system be pure sine wave with at least 800 watts capacity. However, alternative mode inverters may be used – please contact us to discuss your individual power solution if you do not have pure sine wave.

The treatment system typically draws about 200 watts (roughly equal to 2 light bulbs) which occasionally rises to 400 watts during brief pumping operations.

Maintenance

Regular (turnaround/end of voyage) “flush/pump out” and inspection of electrolytic plate set.