subsurface modular engineered wetland system-2012-pht-01

7/30/2019 Subsurface Modular Engineered Wetland System-2012-Pht-01

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PACIFIC HYDRO TECHNOLOGIES SDN. BHD.(929752-M)

Lot No 4 TMN Pampang / Lorong Pampang

Penampang, Kota Kinabalu

89500 Sabah, Malaysia

Email:[email protected]
mailto:[email protected]:[email protected]:[email protected]:[email protected]


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2 | P a g e M O D U L A R S U B S U R F A C E F L O W W E T L A N D - H T S - 2 0 1 2

HYDROPONICS WASTE-WATER TREATMENT SYSTEM (HTS)

In 1997, an innovative waste water treatment system was designed in Sabah,

Malaysia for a water village type resort to adequately treat septic tank

discharge/effluent rather than allowing the same untreated waste water to enterthe coastal shoreline waters in and around the resort itself. This design was

incorporated from pre-existing sub-surface flow constructed wetland designs;

SSF.

To reduce costs, the design allowed the existing septic tanks to remain beneath

each unit of two room chalets. Rather than having the septic tanks directly

discharging into the shallow seawater shoreline, the effluent was piped to

strategically placed collection tanks in which ozone was applied. Ozone aids in

the sterilization process as well as helping to decompose complex dissolvedorganic matter. This same ozone treated waste water was then pumped to an

inventive modular subsurface wetland / hydroponics design that scrubbed out

nutrients and reduced bacteria before being discharged into the coastal water.

The discharge water from the system was clear, odorless and low in E. coli

bacteria counts; similar to small stream/river waters.

Sub Surface Flow (SSF) wetlands are basically gravel - or soil- based wetlands in

which the wastewater passes through the porous substrate rather than above an

impermeable substrate. The large surface area of the media and the plant rootsalso provides ample sites for a myriad of microbial activity.


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SSF systems use many of the same emergent plant species as Surface Flow /

Pond (SF) systems. When treating an equivalent volume of flow, gravel-based

SSF wetlands especially use less acreage than SF constructed wetlands. Also,

gravel-based SSF systems are relatively low in maintenance requirements and

are less likely to have odor and mosquito problems than are SF lagoons.

When properly designed, gravel-based wetland systems have high efficiency

rates for removing biodegradable organic matter and nitrate-nitrogen from

wastewater.


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Modular SSF-HTS Application Design


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PHT PE 30 MODULAR SUBSURFACE FLOW HYDROPONICS TREATMENT SYSTEM (HTS)


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Important Points for the PHT HTS Design Application

The subsurface flow (SSF) constructed wetland concept, incorporated as an easilyexpandable modular system with the PHT design application, can accommodateincrease waste water volume loads with business or home expansions.

The PHT modular design application can offer high performance treatment for reducingBOD5 and TSS levels at relatively low costs for construction, operation andmaintenance.

The odor and vector control offered by the SSF concept make it attractive for systemswhich are in close proximity to the public or home. Use applications range from singlefamily dwellings to larger developments, resorts, community water villages, and otherpublic facilities.

Ammonia removal in non-modular, non-aerated SSF systems is often noted as being

significantly deficient. The reason is the lack of oxygen in the gravel / soil media bedprofile combined with an inadequate hydraulic retention time (HRT) to complete thenitrification reactions to remove nitrogen; especially in the form of ammonia NH3 andnitrite NO2.


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PHT modular hydroponics type SSF design incorporates a high rate of oxygen injectionvia an innovative / simple flow design. Water entering successive modular tanks ishighly oxygenated to greatly aid in fostering deep plant root penetration which, in turn,aids in nutrient uptake, nitrification reactions, and antibacterial conditions. The modulartank application also gives per liter of waste water volume longer hydraulic retention

time (HRT) which further aids in both nutrient removal / scrubbing and antibacterialaffection.

PHT can provide your design needs to incorporate the HTS application to ensure thatyour facility or home is eco-friendly and not adding nutrients to the environment whichcan cause serious eutrophication issues and ecosystem biodiversity loss.

PACIFIC HYDRO TECHNOLOGIES SDN. BHD.

(929752-M)

Lot No 4 TMN Pampang / Lorong Pampang

Penampang, Kota Kinabalu

89500 Sabah, Malaysia

Email:[email protected]
mailto:[email protected]:[email protected]:[email protected]:[email protected]


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subsurface modular engineered wetland system-2012-pht-01

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