This paper reviews an attempt to evaluate the comparative effectiveness of natural coagulants such as tamarindus indica seed powder and carica papaya seed powder for the treatment of Municipal waste water. This study mainly focused on turbidity removal, Total dissolved solids, Chemical oxygen demand, total suspended solids from Municipal waste water. The main aim of the environmental agencies and government are to seek ways to minimize the considerable increase in the rate of water pollution due to urbanization and industrialization. Coagulation and flocculation using chemicals are also adopted for treatment process. But due to high cost of chemical coagulants, this can be replaced by natural coagulants. This experiment was conducted at room temperature without adjusting the PH. Various conditions such as coagulant dose, stirring time and settling time is varied and its optimum values are obtained. Results show the reduction in turbidity, TDS, TSS, Ph, TS and COD by using natural coagulants.

Keywords: Municipal waste water, Tamarind seed powder, Papaya seed powder.

[1] Duithy George and Arya Chandran J (2018), “Coagulation Performance Evaluation of Papaya Seed for Purification of River Water,” International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS), Vol. VII, Issue I, 50-66.

[2] T D Raju, Ahana K Reji, Naji Raheem, Sruthi Sasikumar, Veena Vikraman, Shimil C P, Sneha K M (2018), “Role of Moringa Oleifera and Tamarind Seeds in Water Treatment,” International Journal of Engineering Research and Technology (IJERT), Vol. 07 Issue. 04, 454-462.

[3] Aneesu Rahman, Ranjitha O R, Suranya T, Jency Nadayil, Aswathy Ramesh (2018), “Efficiency of Jackfruit Seed Powder as a Natural Coagulant,” International Research Journal of Engineering and Technology (IRJET), Vol. 05, Issue. 03, 3060- 3062.

[4] S.Ramesh and L.Mekala (2018), “Treatment of Textile Waste Water Using Moringa Oleifera and Tamarindus Indica,” International Research Journal of Engineering and Technology, Vol. 05, Issue. 03, 3891-3895.

[5] Dhruva R and Suresh B (2016), “An Investigation of Effect of Natural coagulant (Tulsi) for reduction of pH, Turbidity and COD from sewage water,” International Research Journal of Engineering and Technology (IRJET), Vol. 03, Issue. 07, 69-72.

[6] Shweta Verma, Isma Mehraj, Anshul Jain, Anil Prasad Ray, May 2015, Application of Zia Mays & Cucorbita Pepo as Natural coagulants for Purification of River Water, International Journal of Innovative Science, Engineering & Technology, Vol.2 Issue 5, 693-696.

[7] Renuka A. Binayke, M.V. Jadhav, 2013, Application of Natural Coagulants in Water Purification, International Journal of Advanced Technology in Civil Engineering, Volume-2, pp.118-123.

[8] Francis Kweku Amagloh and Amos Benang, February 2009, Effectiveness of Moringa olifera seed as coagulant for water purification, African Journal of Agricultural Research, Vol. 4(1), pp.119-123.

[9] Daniyan Safiya Yahaya, Ahalaka Moses Enemaduku and Eru. E.O, 2011, The use of Moringa seed Extract in Water Purification, International Journal of Research in Ayurveda & Pharmacy, Vol. (2), pp.1265-1271.

[10] Hussain Sayyed, Mane Vinod, Pradhan Vidya and Farooqui, Mazahar, 2012, Efficiency of seeds of Moringa Oleifera in estimation of water turbidity, International Journal of Research in Pharmaceutical and Biomedical Sciences, 3(3), 1334-1337.