At SRP Engineering & Tech, we offer Turnkey Zero Liquid Discharge (ZLD) system that are specifically engineered to deliver high efficiency and reliability. Our comprehensive ZLD solutions are ideal for industries such as chemical, pharmaceutical, textile, and food processing, where water recovery and waste minimization are critical.
A Zero Liquid Discharge (ZLD) system is an advanced water treatment solution designed to recover and recycle all the wastewater from industrial processes, ensuring zero discharge into the environment. By incorporating a combination of innovative technologies, a ZLD system helps industries meet stringent environmental regulations while reducing water consumption, lowering disposal costs, and contributing to sustainable operations.
Our ZLD system consists of a series of interconnected process units, each playing a crucial role in treating and recovering water. The key components include:
The first step in the ZLD process is the Effluent Treatment Plant (ETP), which focuses on the primary treatment of wastewater to remove contaminants like suspended solids, oils, and heavy metals. The ETP includes physical, chemical, and biological treatment processes, such as:
After treatment, the effluent water is pre-treated to meet the required standards before further processing in the ZLD system.
The Stripper System is employed to remove volatile organic compounds (VOCs) or solvents from the treated effluent. In this unit, heat or steam is used to volatilize the organic components, which are then separated from the water. The resulting clean water can be directed to further treatment stages, while the volatile contaminants are condensed for reuse or safe disposal. This step plays a crucial role in ensuring that the remaining effluent is free from harmful chemicals.
The Evaporation System is designed to further concentrate and recover water from the treated effluent. The process involves the use of thermal energy to evaporate water, leaving behind concentrated waste, which is suitable for further treatment or disposal. Our Multiple Effect Evaporators (MEE) are highly efficient in recovering large volumes of water with low energy consumption, making them an ideal choice for ZLD systems.
The final step in the ZLD process is the Agitated Thin Film Dryer (ATFD), which plays a key role in handling the concentrated waste generated from the evaporation process. The ATFD uses a rotating film of concentrated waste on a heated surface to facilitate rapid drying, converting the liquid into a dry solid or slurry form. This ensures minimal waste generation, making disposal safe and environmentally friendly.
The ATFD also helps recover any remaining solvent or volatile components, ensuring complete recovery and minimizing waste disposal.
Pressure Range: Full Vacuum / Atm. / Under Pressure
Offered MOC: SS304L, SS316L, SS310, Duplex / Super Duplex Stainless Steel, Hastelloy C22 & C276, Mild Steel and any specific as per process requirement etc.