Establishing Septage Treatment Plants (Rs.150 Cr. )

Establishing Septage Treatment Plants (Rs.150 Cr. )

Total Project Outlay


150 Cr.

Details of Administrative Approval



G.O (Rt) No:470/2019/LSGD dated. 01-03-2019


Total Expenditure




Septage or "septic tank sludge" is partially treated sludge that is accumulated and stored in a septic tank or similar onsite sewage facilitySeptage is a by-product from the pretreatment of household wastewater (sewage) in a septic tank.


Septage Treatment Process diagram



DPR Details

Sl No

Name of ULB

DPR Download

Date of  Submission

DPR Appraisal  Details

KIIFB Approval Details





















DPR submitted for 

> Kunnamkulam Municipality   : Rs 17,03,00,000 


With growing urbanization and emergence of urban areas as growth centers combined with improved living standards, piped water supply with improving service levels has become integral part of basic civic amenity. Safe disposal of human excreta & wastewater is also necessary for health reasons. The options available for disposal of excreta are either on-site or off-site sewerage system. On site sanitation system, prevailing till date, in most of the towns, are individualistic system with inherent problems for collection & disposal of sludge & risks of contamination of ground water. Water carriage sewerage system, more or less, has come to be universally adopted for disposal of excreta.


        Kunnamkulam is one of the urban local bodies of Thrissur District. Kunnamkulam municipal area falls in Talappilly Taluk. Kunnamkulam Municipality was formed in 1948 and was a class IV Municipality till 2000 and it was elevated to the rank of second grade municipality merging Arthat Panchayat and parts of Chowwannur and Porkulam Panchayats. As per 1991 census, area of Kunnamkulam town was 6.96 while in 2011, the town is almost five times its original area.


                 Kunnamkulam is having many natural drains which allow the carriage of runoff as well as the waste water. But the drains at present are getting blocked due to many reasons and are causing water logging. No separate sewage disposal scheme is functioning inside the municipal area. Kunnamkulam Town has made drains for rain water runoff. Waste water from public sewage drains are drained off to kole lands  at  Thuruthikkad bund without any treatment. This is leading to serious environmental problems.


                           There is no existing facilitiy for sewage management. So it is necessary to have a properly designed and executed sewerage system in the Kunnamkulam Municipality. Kunnamkulam Municipality does not have a sewage treatment system. The present scenario of sewage disposal reveals a pathetic situation since sewage and sullage from the municipality area including hospital, households, commercial buildings; institutions etc. find their way into the drains and canals.


          It is contemplated to take up the Sewerage System for the town in a phased manner. Mainly the wards covered with busy establishments, commercial and thickly populated wards. Accordingly, the area covering 6 wards is taken as Project Area for the proposed Sewerage Scheme. The proposal is for providing sewerage network with a Sewage Treatment Plant at land near Thurakkulam market. The provisions, as recommended by Manual of Sewerage and Sewage Treatment, published by Central Public Health and Environmental Engineering Organization (CPHEEO), of Government of India and revised guidelines for preparation of DPRs are largely adopted for design of sewerage system for this project. The sewer system has been designed utilizing the available head to maintain proper flow velocities in the sewers with minimum head loss.

          The sewer system design is limited on one hand by hydraulic losses which must be within the available Head and on the other to maintain self-cleansing velocities. It is proposed to use DWC HDPE pipes for sewers suitably supported with bedding, depending on structural requirements. A minimum size of 200 mm is adopted as per recommendations of CPHEEO Manual. Manholes are proposed to be provided at 30m or more spacing as per prevalent practice & specifications.


          A sewage treatment plant with septage treatment facility based on RMBR technology is proposed to be constructed of capacity 1MLD. RMBR or Rotating Media Bio Reactor is a highly intensified version of the attached growth aerobic attached growth aerobic biological treatment process. RMBR is a drum rotating at low rpm on bearings and needs very nominal power input to keep it in rotation. Hence the RMBR needs only 25% of the power input compared to other systems. The RMBR can support a significantly denser population of microbes and therefore requires much shorter retention times compared to all other systems. The RMBR is silent and does not produce sound unlike other systems that depend on blowers for aeration. Benefits for the implementation of this project could only be achieved with parallel improvements in other related fields.


       A number of other interventions will be required for reaping full benefits of this project and to ensure its continual efficient functioning. The major identified interventions are provided below.  Developing comprehensive management system for sewerage facilities·  Encouraging property owners to connect to sewers where they are available·  

Introducing improved Quality Assurance procedures and checks·  Improving Solid Waste Management·  Sanitation awareness and domestic hygiene·

The total cost for the project is Rs. Rs 17,03,00,000/- (Rupees Seventeen Crore Three Lakh Only)