Water Purification Technology

METHOD OF OBTAINING ADSORBENTS FOR A FILTRATION APPARATUS

Patent no: 398235

The patent 398235 discloses a method of obtaining adsorbents from barks of trees to be used in a filtration apparatus. The method includes drying the clean pieces of barks in sunlight to remove moisture from the clean pieces of barks to obtain dried pieces of barks. Treating the dried pieces of barks with a formaldehyde to release a colour of dried pieces of barks. Heating the treated pieces of barks in a muffle furnace in an absence of air for a particular period of time to obtain adsorbents.

METHODS AND DEVICES FOR USING OFF GAS FROM OZONE CONTACT TANK IN ETP AND STP

Patent no: 419628

The patent 419628 discloses a method and a device for using ozone and oxygen present in an off gas from an ozone contact tank in ETP and STP. The device includes a pre-ozonisation tank, an ASP tank, a post ozonisation tank, and a diffuser systems (D1, D2, D3). The effluent inlet is fed with a wastewater and the treated water flows out from effluent outlet and product gas inlet is fed with a product gas from ozone generator to obtain a partially oxidized effluent.