Asia’s largest CNG plant will start in Indore

Indore city has maintained its highest position in the field of cleanliness. Now the unimaginable idea of ​​making energy from waste has been given shape in Indore. In order to realize Prime Minister Shri Narendra Modi’s concept of Waste-to-Wealth and to innovate in the field of sanitation, Municipal Corporation, Indore has set up a Bio-CNG Plant of 550 MT per day capacity for wet waste disposal. This plant is the largest and the first plant of Bio-CNG from organic waste in the entire Asia continent, which is a matter of pride not only for Indore but for the state as well as for the country. This Bio-CNG is located at Devguradiya Trenching Ground in the city. Prime Minister Shri Narendra Modi will dedicate the plant. Chief Minister Shri Shivraj Singh Chouhan will also attend the programme.

Bio CNG Plant is based on the PPP model. While on the one hand, Municipal Corporation, Indore will not bear any financial burden on the establishment of this plant, on the other hand, the agency setting up the plant, IEISL, New Delhi will pay a premium of Rs. 2.5 crore per annum to the Municipal Corporation, Indore. In this plant, 550 MT of wet waste (domestic organic waste) will be treated daily, which will generate 17 thousand 500 kg of Bio-CNG. Gas and 100 tonnes of high quality organic compost will be produced. Out of the Bio-CNG produced from this plant, 50 percent gas will be available to Municipal Corporation, Indore for the use of public transport buses. The remaining 50 percent gas can be sold to various industries and commercial consumers.

The decision to set up this plant in Indore has been taken since the waste segregation of Indore city is of good quality. Before the decision to set up the plant, the said company got the wet – waste tested by taking more than 200 samples in the last one year. Based on the test results, it was revealed that only 0.5 to 0.9 percent of the rejects are there in the wet – waste, which was found to be of high quality as compared to other European countries. After a source based segregation process, it is necessary to pre-process it to produce bio gas from organic waste. For this, state-of-the-art equipment is required in the plant. Since the organic waste collected from Indore city has very less amount of inorganic material, yet this waste has to go through the processing. For this, state-of-the-art and automatic equipment has been installed inside the plant. After receiving the organic waste in a bunker, it is transported to the processing equipment with the help of a grab crane. Inorganic and fibrous substances from the organic waste are separated by a large screen. Recycled water is mixed in appropriate proportion in the organic solid waste, which produces slurries of appropriate quality. In the separation hammer mill, the inorganic material is separated by self-propelled method, the control of which is computerized.

Organic waste undergoes decomposition process for about 25 days in the absence of oxygen. This process is called bio-methanation process, in which micro-organisms contribute a lot. These micro-organisms complete the process of biological decomposition at a controlled temperature. Bio gas is produced in the form of energy in this process. State-of-the-art CSTR, digester tanks based on mesophilic technology were manufactured at this plant set up in Indore city. A heat exchanger for temperature control and center mixer to maintain slurry uniformity have been installed in these tanks, which have been imported from European countries.