Wastewater treatability Services & ZLD


The primary objectives of Wastewater treatability and Zero Liquid Discharge feasibility studies are given here under:

  • To review the suitability of various wastewater treatment technologies
  • To undertake bench-scale tests for establishing the treatability characteristics of wastewater
  • Identify & Establish the ideal treatment technology for the following operations
  • Primary treatment including chemical detoxification
  • Secondary treatment – aerobic and anaerobic treatment units
  • Tertiary treatment – physiochemical and membrane treatment units
  • Wastewater recycling facilities
  • Forced evaporation of mother liquor and rejects
  • To establish reaction kinetics and design intent for treatment units
  • Undertake techno-economic feasibility of various treatment units
  • To evaluate the feasibility of Zero Liquid Discharge (ZLD) by suitable RO and MEE (Multiple Effect Evaporators) units.
  • Develop a basic engineering scheme for upgrading and retrofitting of the treatment units, if required
  • To develop bill of quantities and tender documents for the upgrade scheme

Performance of any biological treatment plant would depend on the treatability characteristics of the influents and degree of toxic pollutant load on the ecology of the anaerobic and aerobic reactors. The ecology of the specific biological reactor will be stabilized over a period of time due to prolonged acquaintance with specific organic
and toxic pollutants that are present in a regular wastewater stream. Any major variation in the influent characteristics and degree of toxic pollutants in the influent stream would greatly affect the overall performance of the treatment plant

The success of a biological treatment system will depend on the detoxification of influent wastewater through robust primary chemical treatment operations, segregation of toxic effluents or by adoption of bioremediation/bio-augmentation/biostimulation methods. The success of a RO plant for organic wastewater recycling applications would depend upon the presence of divalent and recalcitrant organic chemicals present in the treated wastewater. The overall technical viability of the Zero Discharge schemes greatly depends on the crystallization characteristics of rejects and the specific thermal energy consumption in the Multiple Effect Evaporator (MEE).

Services Offered

Our wastewater treatability studies and ZLD feasibility services include the following aspects:

1. Characterization of wastewater streams – flows, chemical and biological characteristics, loading pattern etc
2. Review on the biological treatability characteristics of the individual streams – establishing bench scale treatability studies
3. Assessment of toxicity of the wastewater streams and their impact on the overall efficiency of the ETP
4. Establishing shock-load characteristics of the plant
5. Explore opportunities to reduce pollutant load (organic and inorganic) on the ETP
6. Opportunities to segregate the wastewater streams
7. Performance assessment of individual process units – Modeling of response of the individual units for varying pollutant loads and types
8. Establishing the carrying capacity of the individual treatment units
9. Establishing the ecology of the aerobic and anaerobic systems and suggesting a most efficient biological system
10. Opportunities to improve the performance of the ETP based on the best engineering and biological principles
11. Opportunities to improve the energy efficiency of ETP
12. Opportunities to combat shock loads and improve the performance of ETP’s during process upsets
13. Application of bio-augmentation products to improve the performance of the ETP during extreme upset conditions
14. Opportunities to stabilize and reduce the biological sludge rejected from the ETP
15. Suggesting an upgraded ETP operating program – Maintenance and monitoring programs
16. Suggesting an upgrade scheme and cost benefit analysis – Return on Investment (ROI) and Return on Objectives (ROO)
17. Suggesting a suitable Zero Liquid Discharge scheme with RO and MEE (Multiple Effect Evaporator) treatment units
18. Conceptual design of complete ZLD system with assured benefits
19. Developing a preliminary engineering plans
20. Developing a detailed techno economic feasibility report
21. Developing Bill of Quantities and the tender documents

Industrial Sectors Served

Cholamandalam MS Risk Services has a huge experience in the field of water & wastewater. The list of industrial sectors in which CMSRSL has carried out the wastewater treatability study is as follows:

  • Bulk drug and Pharma
  • Pulp & Paper
  • Sugars
  • Breweries
  • Distilleries
  • Chemicals
  • Fertilizers
  • Common Effluent Treatment Plants (CETP)
  • Steel & Power
  • Cement
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