ABOUT US:
Apex Ecotech Pvt Ltd., a professionally managed company which operates from their works located in Bhosari, Pune, India. In an industrial township almost known for engineering and fabrication. Apex Ecotech has regional office in Delhi also with requisite trained engineers and staff to cater to timely & reliable deliverance. The work is being centrally located in India with proximity to major ports provides a definite competitive edge for Indian & Overseas operations.
Apex Ecotech delivers turnkey projects & solutions in the field of water & wastewater treatment and offers efficient solutions for recycle & Zero Liquid Discharge Systems. The treated water after wastewater treatment is efficiently recovered with minimal rejects & sludge and used in the process, cooling tower make up, boiler feed, horticulture etc. The company on case to case basis undertakes comprehensive operation & maintenance of its systems to facilitate reliable and consistent performance for mutual value added benefits.
ZLD (Zero Liquid Discharge) Process Basic Concept
ZLD Treatment Process Stages
Preliminary Treatment:
– Effluent screening process.
– Oil removal process.
– Effluent mixing process.
– pH correction process.
Primary Treatment:
– Electrochemical Coagulation & Flocculation process.
– Primary sludge settling, treatment process.
– TSS, color & associated BOD/COD removal process.
– Hardness & heavy metals removal process.
Secondary Treatment:
– Biological treatment process.
– Secondary sludge settling process.
– Sludge treatment Process.
– BOD & COD removal process.
Tertiary Treatment:
– Depth filtration / Polishing process.
– Polishing of TSS, SDI, Color, Turbidity, Virus etc.
Recycle Treatment:
– Salts / Total dissolved solids / TDS removal process.
– Salts / Total dissolved solids / TDS final polishing process.
Salt Crystallization:
– Salts / Total dissolved solids / TDS concentration Process.
– Salt crystallization process.
Our ZLD Plant Selection Process
designing & Auditing
Understanding the final use and application of the recycled water from the ZLD system to reach the optimum Vertex between technology and commercials.
Understanding Site Conditions
Geographic and demographic suitability and sustainability of technologies used.
Lower Generation of Internal ZLD Wastewater
A ZLD system has no ETP to discharge into! Hence it is important to integrate technologies such that the purpose is achieved with minimum internal wastages, which needs to get recycled and treated in the system.
Optimal Use of Technology
Use of technologies like MBR (Membrane bioreactor) and EDR (Electrode Dialysis Reversal) for maximising recoveries with suitable Pre-treatment options.
While DAF and Lime Soda ensures consistent higher recoveries thus reducing the final rejects to the evaporation stage.
Maximum Water Recovery
The multi-effect evaporator (MEE) or the mechanical vapour recompressor (MVR) are both highly cost sensitive with respect to fixed and operating costs.
Therefore, maximised recovery of water in a consistent manner employing systems mentioned above ensures the techno-commercial feasibility of the ZLD.
Evaporation Technologies involved in ZLD
1. Hybrid Falling Film & Forced Circulation Evaporators (Multi Effect Evaporator - MEE)
a) Cost effective solution towards low salinity rejects having a feed salinity between 5 to 10%.
b) Best steam economy.
c) Low power costs due to first stages of falling film evaporation.
d) Flexibility in selection of material of construction.
e) Combination of pre-heaters and thermo vapor compressor ensures further steam economy.
2. Forced Film Evaporators
(Multi Effect Evaporator - MEE)
a) Cost effective solution towards high salinity rejects.
b) Reverse feed arrangement ensures maximum utility of motive steam.
c) Horizontal configuration reduces space and height requirement and provides ease of monitoring and maintenance.
d) All monitor- able parameters can be visualized at one level apart from virtual visualization on the HMI/ SCADA screen.
3. ATFD (Agitated Thin Film Dryer) Crystallisers (MEE)
a) Crystallizes the final slurry to salt containing less than 10% moisture.
b) Adjustable blade arrangement ensures flexibility to varying input quality of crystallizable salts.
c) Minimal maintenance and extremely compact design saves on space requirements.
d) Placed on the same platform as that of evaporator flash vessels and hence can be easily monitored at one level apart from virtual visualization on the HMI/ SCADA screen.
Connect with our expert to know which evaporation technology suits your application.
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Our Project Sites:
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Our Office Locations:
Factory cum Corporate Office: Office No. 202, Garden Plaza, Five Gardens Road Sunshine Villas, Rahatani, Pune – 411017, Maharashtra, INDIA
Regional Office: Plot No. 3, 1st Floor, 2nd Westend Marg, Kehar Singh Estate, Behind Saket Metro Station, New Delhi – 110030, INDIA
Call us: (+91) 7290031893
E-mail us: projectsales@apexecotech.com
To know about Effluent Treatment Plant (ETP) / Wastewater Treatment Plant (WWTP), Kindly visit www.etp.apexecotech.com
www.zld.apexecotech.com