REFLECTION ISF INFORMATION RWTS.CO.NZ. Pure. Wastewater. Solutions.

Transcription

1 REFLECTION ISF INFORMATION RWTS.CO.NZ Pure. Wastewater. Solutions.

2 WITH MORE THAN 3000 WASTEWATER SYSTEMS TREATING IN EXCESS OF 2.5 MILLION LITRES OF WASTEWATER EVERY DAY THROUGHOUT THE REGION, OUR TRACK RECORD SPEAKS FOR ITSELF.

3 Our Expertise RWTS WAS ESTABLISHED BY AN ENVIRONMENTAL HEALTH PROFESSIONAL WITH OVER 18 YEARS EXPERIENCE IN THE FIELD OF ON-SITE WASTEWATER TREATMENT AND DISPOSAL IN NEW ZEALAND AND AUSTRALIA. HAVING SERVED ON INTERNATIONAL STANDARDS COMMITTEES WE HAVE BUILT UP AN ASSOCIATION WITH SOME OF AUSTRALIA S LEADING ENGINEERS, SOIL SCIENTISTS, ACADEMICS AND MANUFACTURERS AND CAN OFFER A FULL RANGE OF SERVICES TO OUR CLIENTS: FEASIBILITY REPORTS SITE EVALUATION REPORTS DESIGN AND CONSTRUCTION LIAISON WITH LOCAL AND REGIONAL COUNCILS MAINTENANCE UPGRADING OF EXISTING SYSTEMS

4 Choosing your system CHOOSING THE RIGHT SYSTEM FOR YOUR HOME CAN BE A COMPLEX PROCESS AND DEPENDS ON A VARIETY OF FACTORS. WE VE SIMPLIFIED THIS AND BROKEN IT DOWN IN TO SOME KEY CONSIDERATIONS.

5 1 Price Include engineering Plan & Report for local council Include excavation and installation of: Septic Tank Treatment Plant Irrıgation 2 Service Engineering report provided within 3 days Supplier s staff maintain system Council approval guaranteed 3 Performance Is the system passive and therefore has least noise or smell and has lower electricity and maintenance costs? Can the system be idle and unused for long periods while you are away without causing any problems? Can the system cope with big changes in volume of water? Will the system remove 97% + of suspended solids & BOD (Biological Oxygen Demand) of typical household effluent?.

6 HOW THE REFLECTION ISF WORKS Primary Treatment. All household wastewater is directed to the one house drain which leads to a large capacity primary settling chamber. In this chamber, naturally occurring bacteria start the treatment process by breaking down the settled solids through anaerobic digestion. Fats and other light matter float to the surface and form a scum. The liquid wastewater then passes through a special effluent filter which is designed to retain solid material in the settling chamber. With a reduction in organic loading of approximately 50% of the wastewater is now ready to be pumped onto a buried intermittent sand filter. By careful float switch control a measured amount is dosed at regular intervals throughout the day. Secondary Treatment.Unlike other secondary treatment systems the REFLECTION ISF SYSTEM does not rely on artificial media materials or the use of costly mechanical aerators, diffusers or blowers. A carefully constructed and totally self contained buried Intermittent Sand Filter provides secondary treatment and polishing of the effluent in a completely natural way. The ISF utilizes the latest advances in sand grading technology and is designed on the engineering principle of the Long Term Acceptance Rate to ensure trouble free operation for the life of the system. Wastewater dosed from the primary pump is spread evenly over a layer of clean crushed rock or scoria at the top of the buried ISF and allowed to percolate slowly down through the various layers of specially graded sand and rock. Natural processes of Physical, Chemical and Biological activity occur within the ISF to remove organic material and dramatically reduce the numbers of harmful bacteria, pathogens and viruses. At the base of the fully lined ISF the renovated water is collected and drained to the irrigation pump chamber ready for re-use on your lawn, garden or landscaped area. Re-use that is, without the need to add chlorine, or provide expensive ultraviolet or ozone treatment.

7 Irrigation. By producing a renovated water with very low levels of suspended solids, Biological oxygen demand and Faecal Coliforms we are able to move away from the standard trench or bed system of disposal. Using pressure compensated dripper irrigation line buried in the upper topsoil layer the renovated water can be utilised as a resource to irrigate your property and enhance its value. A great deal of flexibility in lay out of the dripper lines is possible and with manual flush valves their reliability is unmatched by any other systems. Installation. Care and attention to detail are of paramount importance in the construction of any wastewater treatment system. We take full responsibility for every installation. We use only highly experienced and fully trained drainage and pump professionals who install only under our direct supervision. This ensures that not only is each system constructed to our very high standards, it also takes the responsibility of organizing drain layers, plumbers, earthmovers and irrigation specialists off the client. With the appropriate organisation it is possible to complete an installation in one day. Technical Information. The ISF System can produce (without the addition of any chlorine or other disinfection methods) an average effluent quality of: Suspended Solids < BOD5 < Suspended Solids < BOD5 < 5ppm 5ppm Sizing of Systems. The design of any effluent treatment and disposal system is dependant on many factors including: Design wastewater usage Topography Oil Types Final disposal requirements

8 Sand Filter GAIN A BETTER UNDERSTANDING OF HOW THE ISF SYSTEM WORKS BY FOLLOWING THE DIAGRAM BELOW.

9 1. Inlet pipe from house drains 2. Air Vent (Mushroom) 3. Septic Tank. This stores waste for about 3 days where the following happens: Sludge sinks to bottom, fats, lint, light materials float to surface and bacteria process the organic components of the waste. These type of bacteria live withoutt oxygen 4. Solids filter fitted in discharge pipe to retain solids in septic tank 5. Filter dosing chamber. The level in here slowly rises as liquid is discharged from the septic tank until the top float switch (7) turns the pump (6) on 6. Sand filter dosing pump sends a dose of effluent to the sand filter distribution pipes (10). The pump only pumps from high to low over a few minutes and then turns off. The electricity cost is very low. As low as $6 per year 7. Dosing tank high level float switch 8. Dosing tank low level float switch 9. Sand filter dosing pipe 10. Sand filter distribution pipes 11. Sand. This is specially sized sand. Biological slimes attach to the sand surface. Bacteria live in these slimes (which use air to live) and feed on the remaining organic material in the effluent. Each dose thinly coats the sand surfaces. As it trickles down through the sand it draws air (through the topsoil on top on the sand filter) into the sand filter. Natural, passive aerobic treatment occurs in the sand filter. This is called secondary treatment. The sand filter is built into the ground, where all liquids are contained by a plastic liner (19) 12. Treated (polished) effluent is collected in the base of the sand filter in a slotted discharge pipe which directs the clear, odorless liquid to the treated effluent chamber (14) 13. Treated effluent pipe from sand filter to treated effluent chamber (14) 14. Treated effluent chamber is where the treated effluent accumulates. The level of liquid slowly rises until the top float switch (16) turns the pump (15) on. The pump empties the chamber down to the lower float switch level (17) and turns off and stays off until the top float switch turns the pump on again. Electricity use is very low. As low as $6 per year 15. Treated effluent discharge pump. This pumps to the disposal field. The pump cannot be heard as it is underground in a concrete tank 16. Top float switch, treated effluent chamber 17. Bottom float switch, treated effluent chambxaer 18. Access riser and lids. These are sealed pipes allowing access for inspection and for septic tank trucks to pump out. By having the access just above ground and sealed to the tank, ground water is excluded from the treatment process. These are child and animal proof

10 Interested in saving money? PASSIVE, NATURALLY AERATED SAND FILTERS COST LESS TO RUN. COMPARED TO FORCED AERATION PACKAGE PLANTS, RWTS FILTERS WILL SAVE YOU POWER, MAINTENANCE AND PUMP OUT COSTS. PASSIVE Reflection Sand Filters have two small pumps which only pump for 15 to 20 minutes per day each, costing approx $12 per year (2 pumps x 0.4 Kw x 0.25 hours per day x 365 days per year x $0.16 per Kw per hour = $12 per year - a p p r o x ). Natural aeration of the Sand Filter means no expensive, continually running aerator blower. The cost of running a 100w blower 24 hours per day every day is around $140 per year. You save $130 per year (0.1 Kw x 25 hours per day x 365 days per year x $0.16 per Kw per hour = $140 per year). POWER COST There is no aerator in Reflection s Sand Filter to replace. You save $18 0 p e r year. PUMP OUT COST Forced aeration plants build up sludge which requires pumping out, an average once every three years costing $240.00, you save $80 per year. IN TOTAL, ANNUAL RUNNING COST SAVED IS $390 PER YEAR.

11 LET US ENHANCE YOUR NEW HOME WITH A RELIABLE AND HIGH QUALITY WATER TREATMENT SYSTEM THAT ALLOWS YOU AND YOUR FAMILY TO FLUSH AND FORGET. rwts.co.nz

12 TO DISCUSS YOUR PROJECT AND GET AN NO-OBLIGATION, FREE QUOTE, TALK TO US TODAY SYSTEM REFLECTION WATER TREATMENT SYSTEMS 948 STATE HIGHWAY 16, PO BOX 198, WAIMUKU, AUCKLAND PHONE: (09) RWTS.CO.NZ