A prominent sugar mill located in the south east asia has a requirement for sugar industry effluent treatment plant meeting their new discharge norms of COD < 100 ppm.


Due to wide fluctuations in the net production at the site, the premises require a biological system which can cope up the fluctuations and still could achieve desired treatment goals.

The effluent generated from the premises has a varying flow rate of 300-600 m3/day and also the COD levels vary from 3000-4000 ppm. The plant also has issues with shock loads due to various routine maintenance activities within the production facilities.


Based on our on site trials for the proposed project, following treatment scheme was suggested:

Treatment Scheme:

  • Micro Aerobic Equalization Tank
  • LEVAPOR IFAS Reactor
  • Secondary Clarifier
Sugar industry effluent treatment plant
Aeration tank with LEVAPOR Carriers at site


The plant is consistently achieving desired levels of outlet COD < 100 ppm under varying flow and COD load conditions. Due to implementation of the LEVAPOR IFAS Process, the settling properties of the MLSS has improved drastically and effluent has much better clarity at the outlet of secondary clarifier with lower level of TSS carryover.

Inlet Flow
300-600 m3/day
Inlet COD
3000-4000 ppm
Outlet COD
<100 ppm
%Filling of LEVAPOR Carriers


  • Smaller foot print of just 500 m3 reactor volume
  • Consistent COD reduction under all load conditions
  • Better capability of tolerating toxic shock load
  • Better settling properties of the MLSS and thus higher quality of treated effluent at the clarifier outlet
Author Bio

Amit Christian is a MSc graduate in Environment Science from Middlesex University, London, UK. He has been active in the field of water and wastewater treatment since 1998. He specializes in design, engineering, and management of various biological wastewater treatments such as Activated Sludge Process (ASP), Sequencing Batch Reactor (SBR), Moving Bed Bio Reactor (MBBR), Integrated Fixed Film Activated Sludge (IFAS). He has helped various Industrial and Municipal clients in troubleshooting , optimizing their biological wastewater treatment processes to achieve latest Stringent norms for Ammonia Removal.