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We are amidst the dependable Manufacturers, Exporters and Suppliers of the Zero Discharge System. The Zero Discharge System evaporates water from Pretreated Effluent in almost the same way as thermal evaporators, employing the principle of diffusion at normal temperature.
To recapitulate the basic aspects of the novel design :
With above background, it becomes clear that the effluent has to be properly pretreated before it is pumped into Braj Projects Pvt.Ltd.'s ZDS involving; equalization, pH control, removal of volatile organics, removal of suspended solids and turbidity, and lastly adequate removal of dissolved impurities.
There are basically two types of dissolved impurities in the effluent, organic and inorganic, manifesting themselves as COD, BOD,TOC, etc. and TDS. Firstly, the effluent has to be passed through a packed bed of activated carbon, granular form, with app surface area about 80-100sq meter per gram. It is well known that activated carbon of good quality possesses extremely good adsorptive for most of the organic impurities present in the textile effluents. Therefore, after passage thru carbon bed ,most of the dissolved organics of the effluent would be removed, with optimum contact time and sufficient depth of the bed, say,.5m to 1.0meter and dia of about 0.5 to 0.75m.The carbon bed as usual would have distributors, supporting plate, mild steel shell, inlet and outlet and so on.
After removal of organics in the carbon bed of adequate quantity, the effluent is passed through a mixed bed of anionic and cationic resins which are well known to remove inorganic salts from the effluent by the ion exchange process. This would be also made from mild steel shell lined with epoxy to withstand corrosion by the effluent. It would be a packed bed with usual connections like inlet, outlet, distributor etc. The anionic and cationic resins would be in the form of spherical particles packed to sufficient depth and adequate residence time.
Both the carbon granules and resins are available in India and have been used in the industry for effluent/water treatment with a high degree of success over the last several decades. Their designs have been standardized in our country.
The Overall Picture of Our ZDS Is As Follows
Typical Characteristics Of The Equalized Textile Effluent
Typical Characteristics of the Pretreated Effluent before Zero Discharge System
The packed beds of activated carbon and ion exchange resins are cylindrical, vertical columns with valves, pressure gauges, drains, level indicators, opening lids and man holes for cleaning and are self -supporting structures of about 2-3 feet diameter and 4-6 feet cylindrical heights, made from mild steel of about 4-6 mm plate and coated with epoxy paint.
The present study on a pilot plant at Braj Projects Pvt.Ltd. over two years and exhaustive study of the commercial plant at a local chemical industry over the last 1.5 years have shown that there are no adverse effects of any kind either on the local climate or human beings or plantations in the vicinity of the ZDS plant as well as in the long ranges by the emissions from the ZDS. This is on the expected line technically also, because what is being discharged from the ZDS is water vapor well mixed with large amount of air and that too at highly elevated level of 50-60 feet from the ground. If we compare this with the discharges of the greenhouse gases from the boilers, driers, thermic fluid heaters and even multiple effect evaporators already approved by the regulatory authorities emitting vapors without mixing with air or the much -touted incinerators' gaseous emissions comprising carbon dioxide, carbon monoxide, heat and toxic substances as byproducts of combustion of the fossil fuels used for generation of heat/steam. This method of zero discharge is superior and much more eco-friendly on equivalent basis.
Needless to mention, that like all other novel technologies emerging in the horizon in the global environmental scenario, the ZDS is also not cent per cent perfect, it does have a few limitations, however, if the industry has to opt for a zero discharge system that is very near to the sustainable, practical, cost effective and eco-friendly method of ensuring no liquid discharge. Braj Projects Pvt.Ltd.'s ZDS provides and tries to fill in the vacuum amongst the plethora of pseudo- zero discharge systems available in the Indian market.
During the developmental process of the Zero Discharge System Braj Projects Pvt.Ltd. learnt that in one of the highly developed countries, such systems of very large capacities at industrial scale have been operating successfully for over 10-15 years. Now Braj Projects Pvt.Ltd. also has gone up to a full-fledged commercial plant employing this novel concept and it is of the opinion, based on exhaustive trials so far, that the system is techno-economically viable and sustainable remedy to the Zero Discharge compliance problem of the industry has ultimately arrived on the Indian horizon. Outcome of the Zero Discharge system
Price Range : Ranging from Rs. 5 Lakhs to 2 Crore
|Zero Discharge Tower (M.S.)||M.S||55 feet|
|Effluent Storage Tank (Brick Wall)||RCC /Brick||As needed|
|Fresh Water Storage Tank (Brick ) For System cleaning purpose||Sintex||As needed|
|High Pressure Pump (P)||C.I||-|
|AIR COMPRESSOR (H)||-||-|
|Pipings (2inch for Air & water)||M.S||-|