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FAQs
Q : Can you recover reusable waste products from water?

Wafer fab effluent: silicon carbide, DEG. Electronic industries: Nickel, Cu. Petroleum industries equipment cleaning effluent: xylene, toluene. Pharmaceutical industries: ethanol, methanol, IPA, acetone, ethyl acetate.
Those chemicals inside the effluent above can be recovered and reused.

Q : What solvents are recoverable using Water Treatment Facilities?

Xylene, Toluene, Ethanol, Methanol, IPA, Acetone, Ethyl acetate, etc.

Q : Are there any materials that cannot be recovered from waste water?

In principle, any materials can be recovered from waste. However, because of technology or chemical concentration in the waste, it is not economically viable to recover some chemicals from waste.

Q : Does my wastewater treatment plant need to be licensed?

Every wastewater treatment plant has trade effluent discharge and to be licensed at PUB to comply with trade effluent discharge parameters.

Q : Does Pioneer Environmental offer onsite storage of waste water?

No, Pioneer does not have this kind of service.

Q : How do I dispose of the byproducts after treating my waste water?

Generated gas releases from treatment facilities are to go through scrubbers and to release clean air emission to atmosphere. Suspended solids discharged are to be separated as filtered cake and be disposed for landfill after stabilization treatment.

Q : Can treated water be discharged into a river or lake?

Treated water are only allowed to discharge into public sewer but not allowed to discharge into river and lake in the main land of Singapore.

Q : How many times can the same water be treated?

As long as treated waters are worth to be recycled in terms of costs and well within the parameters for reuse.

Q : Is using a recovery and treatment system cheaper than sourcing water from a public utility?

If the recovery plant return on investment (ROI) is within 3 years by recycling and cost of utility water saving, it is worth to set up a recovery and treatment system.

Q : What is Dissolved Air Flotation (DAF)?

DAF system is the improved version of aerobic digestion where waste water with medium range of COD are removed by injection through coagulant and flocculants and followed by micro-aeration bubbling. The advantage of using DAF is effective in WWT operation in terms of less hydraulic retention time and very much less foot print requirement compared to conventional aerobic digestion.

Q : How long does it take to install a water recovery system?

Equipment fabrication 10~12 weeks, installation and commissioning 6 weeks.

Q : After treatment – is the water safe for drinking?

After treatment when the water parameters are well within the limits, water is safe to drink.

Q : How much energy is required to make water safe for drinking?

For RO system, energy of 6kWh per cubic meter of potable water is required.

Q : What is a Filter Press?

The equipment which is used for separation of solid and liquid in plate and frame pressed by hydraulic pressure where solid is retained in the frame while liquid passed through the filter fabric cloth.

Q : What is a Belt Press?

The equipment which is used for separation of solid and liquid by pressurizing in between upper and lower belt fabric layers and liquid passed through the fabric while squeezing the solid layer.

Q : How much drinking water should I store?

Estimated 180lit per person per day.

Q : How much drinking water is required daily for remote sites?

Estimated 120lit per person per day.

Q : Will my treated water be coloured?

No

Q : Should I add any chemicals to my treated water for drinking?

If the drinking water has some contaminations, then to add chemical to remove it.

Q : Is the use of the treatment plants affected by weather?

Biological Treatment plants will be affected by temperature. In cold country use thermal energy in anaerobic digester to maintain certain temperature.

Q : For remote uses – how much storage should I install in case of breakdown?

Estimated 50lit per person for 7 days minimum storage is required in case of breakdown.

Q : In the case of service being required – how quickly can Pioneer Environmental respond?

One week after the existing project works are tasked to subcontractors and get back for emergency services required customer.

Q : Is treated water safe to use for irrigation or gardening?

If potable water, it is safe for irrigation or gardening.

Q : How much space is required for installation of wastewater treatment?

100~300m3 per day WWT required estimated space 10m x 10m.

Q : How much VOC can be removed?

In order to meet Air emission limit by NEA- Singapore required < 5ppm of VOC, any amount of VOC from the process is required to remove till meet the air emission discharge VOC limit.