What is SBR?

SBR is short term of Sequential Batch Reactor. SBR recognize as one of the economic design of wastewater treatment plant due to land area and structure cost saving. However, decisions should not be based solely on economics but should also include process flexibility, ability to meet permit limits, and long-termviability.

SBR is an activated sludge process. Common of SBR process were illustrated as below:

 

There are 4 main stage completing SBR process for wastewater treatment.

Stage 1:
Filling stage – Wastewater will enter into reactor tank (normally square size) after primary treatment (primary screening, secondary screening, grit and grease removal).

Stage 2:

Reaction stage – The wastewater will be air-injected (aerated) and mixed, purposely to provide oxygen to microbe (endogenous Heterotroph bacteria and protozoan) which decompose organic matter (BOD components) for growth in aerobic conditions. The existence of microbe may observe virtually through brownish water (suspended solid/sludge) during this stage.

In Malaysia, Stage 1 and stage 2 were preceded parallel.

Stage 3:
Settling stage – Filling and reaction (aeration and mixing) no more in place during this stage. The condition allows stagnant water whereas suspended solid will settle bottom inside the reactor. Two obvious liquid layer existed which top is clear treated water and bottom is sludge. By completely assuming here, more compacted sludge is flocculated and ready for return or waste.

Stage 4:

Decanting stage – Removing clear treated water (effluent).

RIVER OF LIFE

Malaysia currently undergoes significant transformation of reservation of water sources by river cleaning, beautification before year 2020. It is put Listed under Greater KL project to increase high economic value.

Greater KL project include transformation of sewerage treatment line and facility, to enhance operation and services.

NOT many would believe that there is an impending water shortage in Malaysia, especially if they are Kuala Lumpur folks who are often caught in traffic jams caused by downpours. But if climate change alters the favorable rainfall pattern, we will have to come to terms with water rationing or other drastic water conservation measures. - according to THESTAR

Rivers have long been recognized as one of humanity’s most important natural resources. They are one of the most important of all the natural resources necessary to ensure human health and civilization. A close association between cities and water is inherent over the history of civilization and in fact, many urban cities in Malaysia are located close to river areas. The last two decades have shown Malaysia has shifted development strategy from an agricultural base to industrialization, and manufacturing industries have now become the main component of the economy for the country. This transformation since the 18th century has clearly shown that rapid urbanization, industrial and intensive agricultural activities, as well as wide-spread land development, have contributed to extensive changing of river functions for the economy, national development and the environment. In particular, river roles have become less significant for human life and river functions limited to transportation purposes only.