Aerobic Packaged STP (PSTP) Manufacturer in India

Single units run from 10 KLD to 200 KLD and more, and can be combined for larger requirements.

A standard PSTP delivers BOD under 20 mg/L and COD under 100 mg/L; with Tertiary Treatment it reaches BOD under 10 mg/L.

Minimal. The FRP unit is ready-to-install and only needs a level RCC/PCC base and standard backfilling.

Yes, the output is clear and odor-free, suitable for gardening, flushing and other non-potable reuse.

MBBR stands for Moving Bed Biofilm Reactor, a biological process where plastic carrier media float freely in the aeration tank and provide a large surface area for bacteria to grow as a biofilm. These bacteria consume the organic pollutants in sewage while a blower supplies oxygen, giving efficient BOD and nitrogen removal in a compact footprint. A packaged MBBR plant integrates primary settling, anaerobic digestion, MBBR aeration, secondary settling and disinfection into prefabricated FRP tanks that arrive ready to connect.

MBBR uses fixed biofilm on free-moving carrier media and runs continuously, so it tolerates fluctuating flows, needs no operator skill for sludge timing and consumes relatively low energy. SBR (Sequencing Batch Reactor) treats sewage in timed fill-and-draw cycles in a single tank, while MBR (Membrane Bioreactor) adds ultrafiltration membranes that give very high effluent quality but at higher power, fouling-management and replacement costs. For most residential, commercial and institutional applications in India, MBBR offers the best balance of effluent quality, simplicity and operating cost.

BOD (Biochemical Oxygen Demand) measures the oxygen micro-organisms need to break down the biodegradable organic matter in water, and COD (Chemical Oxygen Demand) measures the oxygen needed to chemically oxidise all organics, so both indicate the organic pollution load. TSS (Total Suspended Solids) is the weight of undissolved particles held in the water. Lower values mean cleaner water; a well-designed packaged STP brings raw sewage of around 300 mg/L BOD and 200 to 300 mg/L TSS down to single or low double-digit figures.

For typical domestic sewage, a properly designed MBBR plant should deliver treated water with BOD below 20 mg/L, COD below 100 mg/L, TSS below 50 mg/L and oil and grease below 10 mg/L, with pH in the 6.5 to 8.5 range. Adding a tertiary stage with sand and carbon filtration plus UV or chlorination can push BOD below 10 mg/L for reuse-grade water. These targets are set to meet CPCB and State Pollution Control Board discharge and reuse norms.

Packaged FRP STPs are offered across a wide capacity ladder for residential and commercial use and can be configured up to several hundred KLD for larger projects. Beyond a single module, capacity is increased by adding modules in parallel, so the system scales with demand. The right size is selected from the expected number of users and daily wastewater flow.