TREATMENT PLANT APPROVAL 15/2020 Plumbing and Drainage Act 2018

Approval

1. The Aqua-Nova model 80100 (“the system”) described in the Specifications andDrawings in the attached Schedule and manufactured by Everhard Industries PtyLtd (ABN 41 009 690 859) (“the manufacturer”) has been assessed in accordancewith the Queensland Plumbing and Wastewater Code (QPW Code) dated 26 October2017.

2. Approval is granted for the secondary quality wastewater treatment system, subject tocompliance by the manufacturer with the requirements of the Plumbing and DrainageRegulation 2018, and the conditions of approval detailed below.

3. This approval, the conditions of approval and the Schedule comprise the entireTreatment Plant Approval document.

4. Any modification by the manufacturer to the design, drawings or specificationsscheduled to this approval must be approved by the Chief Executive.

Conditions of approval 5. The manufacture, installation, operation, service and maintenance of the systems

must be in conformity with the conditions of this Treatment Plant Approval.

6. The secondary quality wastewater treatment system, which is an example of theapproved systems, may only be used on premises that generate per day:

(a) a maximum hydraulic loading of 2,000 litres; and(b) a maximum organic loading of 700grams BOD⁵

7. The system must continue to meet the requirements of secondary quality wastewatertreatment system, producing the following effluent quality:

(a) 90% of the samples taken must have a BOD⁵ less than or equal to 20 g/m³ withno sample greater than 30g/m³.

(b) 90% of the samples taken must have total suspended solids less than or equal to30g/m³ with no sample greater than 45g/m³.

(c) 90% of the samples taken must have a thermotolerant coliform count notexceeding 200 organisms per 100 mL with no sample exceeding 1000organisms per 100 mL.

(d) Total chlorine concentration must be between 0.5g/m³ and 2.0 g/m³ in four out offive samples taken.

8. Each system must be serviced in accordance with the details supplied in the owner’soperation and maintenance manual.

9. This approval does not extend, apply to, or include the land application system used inconjunction with an approved system installed on premises.

10. Each system must be supplied with —

(a) a copy of this Treatment Plant Approval document;(b) details of the system;(c) instructions for authorised persons for its installation;(d) a copy of the owner’s manual to be given to the owner at the time of installation;

and(e) detailed instructions for authorised service personal for its operation and

maintenance.

11. At each anniversary of the Treatment Plant Approval date, the supplier must submit tothe Chief Executive a list of all systems installed in Queensland during the previous 12months. Where the Chief Executive is notified of any system failures the ChiefExecutive may randomly select a number of installed systems for audit. The ChiefExecutive will notify the supplier’s nominated NATA accredited laboratory whichsystems are to be audited for BOD⁵ and TSS. The sampling and testing of theselected systems, if required, is to be done at the supplier’s expense. The followingresults must be reported to the Chief Executive;

a) Address of premises;b) Date inspected and sampled;c) Sample identification number;d) BOD⁵ for influent and effluent; ande) TSS for influent and effluent.

12. The Chief Executive may, by written notice, cancel this approval if themanufacturer/supplier fails —a) to comply with one or more of the conditions of approval; orb) within 30 days, to remedy a breach, for which a written notice been given by the

Chief Executive.13. This approval may only be assigned with the prior written consent of the Chief

Executive.

14. This approval expires on 01 January 2024 unless cancelled earlier in accordance withparagraph 12 above.

Stacy McInnesA/Director Plumbing, Drainage and Special Projects Building Legislation and Policy Date approved: xx July 2020

Level 7, 63 George Street Brisbane

GPO Box 2457, Brisbane Qld 4001

Telephone +61 7 3008 2557 Facsimile +61 7 3237 1248

Website www.hpw.qld.gov.au

ABN 61 331 950 314

TREATMENT PLANT APPROVAL No. 15/2020 Plumbing and Drainage Act 2018

SCHEDULE

Attachment 1

Drawings and Specifications for the

Aqua-Nova model 80100

Schedule 1: Specification

Aqua-Nova (80100) (Riser Optlona Aqua-Nova (80'110), Aqua-Nova (80114))

Aara1Bd Watev.-at8r· Treatment Sya119m

The Aqua-Nova (80100) Aerated wastewater Treatment System (AWTS) iadesigned to treat the wastewater from a residential dwelling occupied by amaximum of 1 O perwons (2000Uday) to a Secondary Standard

BODs < 20g/m3

TSS < 30g/m3

Thennotolerant Coliforms < 200cfUl100ml Total Chlorine Concentration greater or equal to 0.5g/m3 lessthan 2.0g/rn3

The Aqua-Nova (80100) Is contained in injection moulded 3000Lpolypropylene septic tanks and collection wells however may be supplied with300mm or 450mm titled risers each with design capacities as set out below.

Operation

The Aqua-nova treatment plant is a two tank system.

Wastewater flows Into the first tank (Primary Tank). This tank acts as a septictank removing most solids and fats/oils. Solids retained in this tank aredigested anaerobically.

Watar from this tank flows to a second tank. This tank is aera·ted and fittedwith submerged media. Aerobic bacteria grow on the media to biodegrade theremaining contaminants In the wastewater. Bacteria ocoaslonally slough offthe media and become suspended in the water.

Aeration Is continuous.

Water then flows to a clarifler where the solids are allowed to settle. Thesesolids are pumped back to the s1art of the treatment plant.

Clarified wastewater is chlorinated

Configuration

The Aqua-Nova AWTS la assembled In the followtng configurations:

80100 80110 80114 Design capacities 2x3000L 2x3000L 2x3000L

primary sedimentation 3O0OL 3O00L 3O00L

secondary treatment @ aeration 300OL 3O0OL 300OL

chamber 1985L 1985L 1985L ci sedimentation 430L 430L 430L i) imgation

393L 393L 393L emergency storage

1000L 1OOOL 1O00L

operatlonal water level • primary� secondary 1385mm 1385mm 1385mm

1350mm 1350mm 1350mm

• A chlorine disinfection unit is installed on the outlet of the clarlfylngchamber.

e Air ls supplled to the contact aeration chamber by a Nitto LA80 air bloweror equivalent, producing an airflow of a nominal 100 litres/minute at 1.3 mwater depth.

• A Davey model D-25A submersible irrigation pump or equivalent Isinstalled in the irrigation chamber for standard above ground irrigation.Type of pump may vary If subsurface irrigation Is employed or the disposalarea Is significantly above the location of the sewage treatment plant.

• Label will be located on the Control Box of the system and have thefoDowing information provided

System Name Model No. Approval Number Design Hydraulic Capacity Date of Manufacture Top Load Umitations Weight o1 Tank

Ufting/Traneport lnstrucltons .. - The name and telephone number af an appropriate

service representative to be contacted in the event that a problem with the plant occurs.The website from which the documentation can be downloaded during the design life

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