A brewery in Hyderabad producing 2-million-hectare litre per annum was being required by environmental regulations to convert to a ZLD facility. The brewery wanted a vendor who could take on all responsibilities, from design, engineering and manufacturing of key components - like RO skids, UF skids, EDR skid, and a crystalliser - to commissioning and on-site services. Based on the RFQ provided by the company, many firms were considered, but SUEZ was selected after the bidding procedure.
For treatment of raw bore well water, SUEZ proposed that the raw water be collected in an existing raw water tank, followed by sodium hypo-chloride dosing and clarification. The clarifier water from the clarified water tank is pumped through a multi-grade pressure sand filter for the removal of suspended particles present in the clarified water. The multimedia filtration (MMF) water is then passed through an ACF for removal of color, odor and dissolved organics resent in the water. Then the filtered water is pumped through two booster pumps which feed an individual RO skid. The recovery of this system is 90% with a 90 m3/h flow rate and considerable reduction in total dissolved solids (TDS). Also, NaOH is dosed in the RO permeate to adjust the pH of 6.5.
For wastewater recovery, the secondary clarifier water is collected in the existing effluent treatment plant collection tank, followed by a multi-grade pressure sand filter. The UF permeate water is passed through an ACF for the removal of color, odor, and any dissolved organics present in the water. Further, the ACF filtered water is fed to the RO system.
The RO reject from the wastewater reuse plant and RTP RO system goes through EDR, which was selected due to its high recovery of challenging water (90%). The EDR reject is fed to a ZLD system for capacity of 2 m3/h.
With commissioning of this new plant, the brewery successfully converted to ZLD.
To learn how SUEZ can help solve your wastewater challenges, contact your SUEZ representative or visit us at www.suezwatertechnologies.com.