SBR STP supplier in Bangladesh

Use Roptan as your SBR STP supplier in Bangladesh. Send the flow pattern, the users and your outlet target: we source a sequencing batch reactor plant from a verified seller, check its cycle, decanter and controls, and deliver it.

Verified sellers
Checked before it ships
Delivered by Roptan

Prefer to deal with suppliers yourself? Post it on the requirement board

Buying SBR STP in Bangladesh

An SBR STP is an activated sludge plant that treats sewage in batches. Each tank runs a cycle of fill, react with air, settle, decant and idle, so treatment and settling share one tank. With two or more tanks, one settles or decants while another fills and aerates. It suits hotels, hospitals, housing projects and factories in Bangladesh whose outlet target includes nitrogen.

An SBR STP supplier in Bangladesh sells a timed process, so the controller, level sensors and decanter matter as much as the tanks. We have verified sellers quote cycle times and decant volumes to one design basis, check a running plant and deliver yours. The seller installs and commissions it. You can also post the requirement on our board.

Kinds of SBR plant

Single tank SBR

One tank runs every stage in turn, so it is not filling while it settles and decants, and sewage arriving then needs somewhere to wait. Choose it for small sites with a balancing tank ahead of the plant.

Multi tank SBR

Two or more tanks take turns, so one fills and aerates while another settles or decants. Choose it when sewage arrives all day and cannot wait for a cycle to end.

SBR with a bio-selector

A baffled section at the inlet mixes incoming sewage with returned activated sludge, to help the biology settle. Choose it when poor settling is a known risk for your sewage.

SBR for nutrient removal

Aerated phases turn ammonia into nitrite and nitrate, and anoxic phases allow denitrification; alum dosing during aeration can remove phosphorus. Choose it when the outlet needs nitrogen or phosphorus removed.

How to specify an SBR STP

Flow pattern: Give the daily flow and when the peaks come. An SBR may not cope with a sudden, lasting rise in inflow, so state expected growth.
Cycle times: Ask for the time of each stage and the decant volume per cycle. Aeration is often quoted at 60 to 90 minutes, but it varies with size and strength.
Decanter: Usually a scoop or trough lowered slowly into the tank. Ask how its travel is limited and what alarm sounds if it draws settled sludge.
Controller and sensors: Valves, the waste sludge pump and the decanter are switched by the controller, usually on timers and level sensors. Ask for manual override, fault alarms and restart after a power cut.
Nutrient target: Say whether nitrogen or phosphorus removal is required. It changes the cycle, the anoxic time and any alum dosing.

Standards and tests for SBR plants

ECR 2023 discharge limits: The SBR must meet the limits of the Environment Conservation Rules 2023. The design basis should state them, with any nitrogen or phosphorus target.
EN 12255-6 and EN 12255-12: European parts on activated sludge design and on control and automation. A seller may cite them voluntarily; they are not Bangladesh rules.
ISO/IEC 17025 and ISO 5815-1: Outlet samples go to an accredited lab and BOD is measured to ISO 5815-1. Each BOD result takes five days to come back.

What moves the price of an SBR STP

Tank count: a multi tank plant needs more tanks and valves than a single tank.
The balancing tank a single tank SBR needs to hold inflow during settling.
The decanter, level sensors, valves and controller, and their spare parts.
Nutrient removal: longer cycles, anoxic stages, mixers and chemical dosing.

Lead times and delivery

Time depends on the plant, so Roptan quotes dates for each order rather than a standard figure. Imported tanks or controls take longer for sea freight and customs clearance at Chattogram. Programming and testing the cycle adds time before handover, and the biology must settle before the outlet test. Roptan confirms the dates and any minimum in the quote.

We deliver the plant to your site anywhere in Bangladesh. The seller installs it, programs and tests the cycle, seeds the tanks and runs the plant until the outlet meets the agreed limits. Handover includes the cycle settings, the control logic description, drawings, lab reports, an operating manual and a VAT invoice (Mushak 6.3).

What we check for this order

Cycle and decant volume in writingWe get the stage times, decant volume and tank count on every quote, so sellers are compared on the same cycle.
Flow against the cycleWe check the cycle against your peak and growth figures, since a batch plant can cope poorly with a lasting rise in inflow.
Decanter and alarmsWe ask the seller to show the decanter travel limits and the alarms that stop sludge reaching the outlet.
Controller supportWe confirm who can service the controller and sensors locally and which spares are held.

Questions buyers ask

Is an SBR or an extended aeration plant better for a hotel?

It depends on the flow. Extended aeration is more flexible on flow rate, and some SBRs are converted to it when inflow keeps rising. An SBR gives more control over the cycle, including nitrogen removal. Ask both sellers to size to your peaks and growth.

What happens if the SBR controller fails?

The cycle stops, so tanks can overfill or settled sludge can reach the outlet. Ask for fault alarms, a manual override for valves and the decanter, restart after power returns, and a local service contact for the controller and sensors.

Does an SBR remove nitrogen?

It can if it is designed and run to. Aeration turns ammonia into nitrate, and anoxic phases let bacteria remove it (denitrification). A plant run only for BOD will not do this, so the nitrogen target must be in the design basis and the quote.

How much sludge does an SBR make?

Usually less to handle than a conventional plant, because the sludge age is longer, but it is not none. A waste sludge pump removes some sludge during the settling stage. Ask the seller for the expected quantity, the removal method and who collects it.

How soon will I hear back about STP?

Within 48 hours of a complete requirement, with a price and a delivery date. A requirement is complete when it has the capacity, where it is needed and by when.

Who do I deal with?

With Roptan, when Roptan manages the order: we buy from the verified seller and deliver to you. With the supplier directly, when you post on the requirement board and choose a quote yourself.