Pali Water Treatment, Control & Research Foundation (CETPs), Pali

Advent undertook a major upgradation at the existing Common Effluent Treatment Plants catering to textile processing units of Pali in Rajasthan. The project involved Tilted Plate Separator for removal of oil & suspended solids, additional Equalization Tanks, mechanized Chemical Dosing Systems, replacement of existing Aeration System and mechanical dewatering using Decanter Centrifuges. The unit at Mandia Road treats 13.6 MLD flow while the one at Punayata Road treats 9.1 MLD flow. The upgradation was done on turn-key basis within 15 months. The project also involves Operation & Maintenance for 12 months.

Novel Infrastructure Ltd., Ahmedabad

NIL is a SPV promoted by Govt. of India and chemical industrial cluster of Naroda, Odhav and Vatva in Ahmedabad to provide infrastructural facilities in these industrial estates. One of the major components of this effort is the Gypsum Washery Plant to handle spent acidic effluent from the member industries. Advent is executed this project on turn-key basis, right from clearing the site to commissioning & training. The project involves neutralizing about 1000 m3/day wastewater having an average of 20% wt./vol. acidity. Approximately 180 – 200 tonnes of hydrated lime / limestone is used in the process, generating about 550 tonnes of gypsum waste per day. More than half of the gypsum is sold to cement industry, while the balance is dumped into an approved secured landfill.

Semi automatic membrane-plate filter presses are used for dewatering. The filtrate after dewatering is subjected to extended aeration activated sludge process after clarification. The bio-treatment unit is the Advent Integral System, the break-through technology with higher biomass concentration without any moving parts. The treated effluent is sent to existing CETP, designed by Advent.

Lonsen Kiri Chemical Industries Ltd., Vadodara

For this Indo-Chinese joint venture dyestuff manufacturing company, Advent provided first-of-its-kind combination of technologies to achieve zero effluent discharge for difficult wastewater. The effluent generated from manufacturing textile dyes is characterized by high COD of about 5000 mg/L, of which, 30 – 35% is non-biodegradable refractory. Apart from this, it has very high colour value and has TDS in brackish range. This effluent is subjected to physico-chemical treatment, first stage biological treatment using advanced biotreatment technology in the form of Integral Clarifier Activated Sludge System, second stage biotreatment using Membrane Bioreactor technology and finally a High-Recovery multi-stage Reverse Osmosis System. The facility recovers 85 – 90% of the effluent as reusable water while the balance 10% is recycled to process, thereby achieving zero effluent discharge

PI Industries Ltd., Panoli
Advent provided new Effluent Treatment Plant on a turn-key basis including the civil construction to this well-sized pesticide manufacturing unit. The raw effluent quantity is 300 m3/day with COD of about 6000 mg/L. It is subjected to equalization, physico-chemical treatment, two-stage biological treatment in the form of integral clarifier activated sludge system, tertiary physico-chemical treatment, polishing filtration & adsorption and mechanical sludge dewatering.
Cadila Pharmaceutical Limited, Dholka

For their new formulations unit, CPL assigned responsibility for turn-key execution to AETPL. The design flow for ETP is 450m3/day sand the treatment involves only biological removal of organics. The treated effluent is used for irrigation on their own land while reusing the same is also contemplated as future plan.

Asian Paints Ltd., Rohtak

Advent has executed a fully-automated Effluent Treatment Plant for APL’s new large-scale paints manufacturing facility at Rohtak on EPC basis. The ETP is to operate automatically based on PLC and will have hook up with plant’s DCS system. It involves batch treatment of process effluent high in COD, TSS & Oil & Grease with cascaded feed, automated chemical dosing, clarification and sludge dewatering. The biological treatment is in the form of integral clarifier activated sludge system and is followed by tertiary treatment to target 50 mg/L COD in the final outlet. The treated water will be used for landscaping while during monsoon, it shall be recycled as cooling tower make-up using a RO system.  The consultants to this coveted project are Tata Consulting Engineers.

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