Judgment of the National Green Tribunal, May 27, 2025 in the matter of Sumit Saini Vs Shree Ram Steel Industries & Others. Sumit Saini, resident of village Damla, District Yamuna Nagar, Haryana had sent a letter petition dated May 14, 2022 to the NGT. The application said that around 25 …
• Low space requirement • Low sludge production with quick dewatering characteristics • Lesser and simpler electromechanical parts used, leading to low operation and maintenance costs • Low power requirements and ability to withstand long power failures • Sludge digestion quicker compared to conventional digesters • Generation of biogas, which …
• Aerobic systems: require aeration, are energy- and capital-intensive, do not result in any by-product, produce excessive sludge and are difficult to handle • Lagooning: requires extensive land • Well-designed ponds: treatment is partially aerobic and partially anaerobic; land and time requirements are high • Anaerobic systems: not as energy- …
It is a pity that instead of Indian researchers, it was a Dutch scientist who developed such a simple technology. India prides itself over its gobar gas plant legacy. When questioned as to why gobar gas technology was not extended to treat domestic sewage, officials from the ministry of non-conventional …
Arsenic-contaminated water can now be disinfected by exposing it to sunlight and air, according to scientists working with the Cooperative Research Centre for Waste Management and Pollution Control in Sydney, Australia. The ultra-violet radiation in sunlight helps the dissolved oxygen to oxidise arsenic to a less toxic form, which can …
A new waste disposal technology has been developed by Mumbai-based Excel Industries Ltd, an agricultural and industrial chemicals company. The company'scost-effective strategy involves waste treatment at points of generation, controlled aerobic composting and mechanical screening of digested compost. (Celrich substrate DF-BF-O1', the biological innoculum the company sprayed on solid waste …
The process of cryo-recycling of plastic wastes has recently been developed by Harry Rosin, director of the Hygiene Institute in Dort- round, Germany. The method uses freezing rather than burning techniques for treating mixed plastic wastes. Wastes are frozen at temperatures as low as -160
The department of mechanical engineering at the Regional Engineering College in Kurukshetra, Haryana, has developed a portabJe aerator which combines the supply of air and the mixing of water ina single unit. It operates by directing surrounding air to the top of a marine propeller. The propeller agitates and efficiently …
DYNAMOTIVE, a firm in Vancouver, Canada, has come with a path-breaking technology that utilises house- hold waste for removing noxious gases from the exhausts of coal-burning power plants. This technology could spread like wild-fire among the developed nations of the world (The Economist, Vol 339, No 7963). Going by statistics, …
THE urban perception of wastewater management has essentially been that of pollution control. Conversely, rural communities in many of the poorer parts of the world recognise municipal wastewater as a nutrient pool to be used in fisheries and agriculture. Taking into account the latter view, under the Ganga Action Plan …
WITH the proposal of a us $360 million loan from the World Bank (WB) to India to provide commercially viable industrial waste treatment methods, the community's right to know, awaiting notification by the Union ministry of environment (MEF) and forests in early February 1996 (Down To Earth, Vol 4, No …
IN THE early hours of December 21, 1995, a group of fisherfolk assembled in thousands and staged a rasta roko (road block) on the National Highway No 17 at Byukampadi and Kulai, about eight km from Mangalore. They were protesting against the laying of a pipeline by the Mangalore Refinery …
SHANGHAI households are in for a surprise as they open their mailboxes this month: the city government will charge them for treating waste water. Companies and work units face a rise of the already existing fee. Pressurised by the World Bank (WB), China has decided to introduce 'the-polluter-pays' principle. "This …
THE team analysing the disposal of wastes in landfills is doing pioneering work in that it has not just identified the types of waste being dumped but even segregated the waste, allocating them it) sparate landfills. The waste in these landfills undergoes decomposition by fermentation. The process of decomposition varies …
The burning desire of Tiruchirapalli residents to safely get rid of mountains of hospital waste has now been fulfilled. The School of Energy Studies of the local Bharathidasan University has come up with a state-of-the-art incinerator which will do just that. Heaps of noxious waste, including bloodsoaked cotton, used bandages …
Importers of foreign waste will not be allowed to sully the environment anymore. The ministry of environment and forests (MEF) has alerted the directorate general of foreign trade (DGFT) to the practice of smuggling in of hazardous waste mixed with quotas of legitimate cargo. The MEF has asked the ministry …
The Common Effluent Treatment Plant (CETP) to be commissioned later this year to serve a cluster of 132 tanneries in Pallavaram near Madras will have a unique feature: it will bring 3 neighbouring residential colonies within its purview. Says S Abdul Rahim, executive director of the Pallavaram Tanners Industrial Effluent …
The hue and cry raised by environmentalists about the Puri beach, castigated by the Central Pollution Control Board as one of the most polluted in India, has finally forced the Orissa government to set up a wastewater treatment plant. Untreated domestic waste from a sewer along the seashore, as well …
TWO months after asserting that it would not revoke the excise duty imposed on methane generated from effluent treatment plants (ETPs), the ministry of finance has backtracked. In the last budget, a 10 per cent excise duty was levied on methane from effluent treatment plants (ETPs), which is used almost …
THREE teams of scientists at the University of Delhi South Campus have identified fungi, algae and bacteria that are natural extractors of metals washed out in mine effluents. Sheela Srivastava, a microbial geneticist at the university, says these microorganisms can be exposed to the polluted water and left to gobble …
Workers at Baranagar jute factory in West Bengal, one of five shut down by the state pollution control board, have decided to contribute part of their wages to help install an effluent treatment plant (ETP) and get the factory reopened. Thousands of workers at the factory were affected by the …
