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Chemtronics Green STP AD+

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Green STP AD+ is ideal for Decentralized Sewage Treatment, With minimum foot print above ground. Self Sustained & upto 80% lower power.

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Chemtronics Green STP AD+

  1. 1. High Rate Anaerobic Digester (HRAD) 1 With Polishing “+” factor Introducing
  2. 2. Contents 1. Concept 2. process Flow 3. how it can optimize AD+ 4. design principals 5. treatment efficiency 6. operation and maintenance 7. Applicability 8. advantages and disadvantages 9. site photos, client list & References 2
  3. 3. Background and working principal (adapted from U.S. EPA 2006, SASSE 1998) 3 1. Concept & Process Overview Cut-away view and longitudinal section of an ABR Source: SANIMAS (2005), MOREL & DIENER (2006) • physical and biological (anaerobic) treatment of wastewater • integrated sedimentation chamber for pre-treatment of wastewater • alternating standing and hanging baffles • wastewater passes through the sludge to move to the next compartment • solid retention time (SRT) separated from hydraulic retention time (HRT) • high treatment rates due to enhanced contact of incoming wastewater with residual sludge and high solid retention • low sludge production
  4. 4. 4 construction industrial use production process cooling tower flushing irrigation processoverview
  5. 5. 5 2. How it can optimize AD+ • treatment of all wastewater (grey, black and/or industrial sewage waste water) that it is fit (after secondary & tertiary treatment) for reuse and/or safe disposal • advance tertiary & water treatment makes this treated sewage water suitable for potable & non-potable industrial use, construction, irrigation, cooling tower, flushing etc. • allows for recovery of biogas, which can be used as a substitute to e.g. LPG or fuel wood in cooking
  6. 6. 6 3. Design principals – Core Primary & Secondary Treatment AD+ start with oil & grease trap & settling chamber for larger solids and impurities (SASSE 1998) followed by series of at least 2 (MOREL & DIENER 2006), sometimes up to 5 (SASSE 1998) up-flow chambers & anaerobic filter. Hydraulic Retention Time (HRT) is relatively short and varies from only a few hours up to two or three days (FOXON et al. 2004; MOREL & DIENER 2006; TILLEY et al. 2008) up-flow velocity is the most crucial parameter for dimensioning, especially with high hydraulic loading. It should not exceed 2.0 m/h (SASSE 1998; MOREL & DIENER 2006). organic load <3 kg COD/m3/day. Higher loading-rates are possible with higher temperature and for easily degradable substrates (SASSE 1998)
  7. 7. 7 3. Design principals – Polishing Basic & Advance Tertiary Treatment polishing basic tertiary treatment uses disinfection & sediment filtration. advance tertiary treatment like ozonation, ultra filtration, ultra- violet & reverse osmosis is used independently or in combination to treat post AD water to suite reclaimed water parameters.
  8. 8. 8 4. Treatment efficiency Treatment performance of AD+ is in the range of • Chemical Oxygen Demand (COD) removal : 65% to 90% • Biological Oxygen Demand (BOD) removal : 70% to 97% • Total Suspended Solids (TSS) removal : 70 % to 90% • Pathogen reduction : 100 % Superior to BOD-removal efficiency of conventional septic tank (30% to 50%)
  9. 9. 9 5. Operation and maintenance • inoculate („seed“) AD with active anaerobic sludge from e.g. septic tank to speed up start-phase • allow bacteria to multiply, by starting with 1/4 of daily flow, and then increasing loading rates over 3 months • long start-up time  do not use AD when need for treatment is immediate • check for water-tightness regularly and monitor scum and sludge levels • remove sludge every 1 to 3 years (preferably by vacuum truck or gulper to avoid that humans get in direct contact with sludge) • leave some active sludge in each compartment to maintain stable treatment process • take care of advanced treatment and/or safe disposal of sludge Source: adapted from SASSE 1998, TILLEY et al. 2008, EAWAG/SANDEC 2008
  10. 10. Examples 1 10 Use of “straight handle” (left) and “Z-handle” (right) brushes for cleaning of down-ward pipes Source: K.P. Pravinjith 5. Operation and maintenance
  11. 11. Examples 2 11 Measuring sludge levels Source: K.P. Pravinjith 5. Operation and maintenance
  12. 12. 12 6. Applicability • be installed in every type of climate, although efficiency is affected in colder climates(TILLEY et al. 2008) • suited for household level or for small neighbourhood as DEWATS (Decentralized Wastewater Treatment System)(EAWAG/SANDEC 2008) • suited for industrial wastewaters • be designed for daily inflows in a range of some m3/day up to several hundreds of m3/day(FOXON et al. 2004; TILLEY et al. 2008) • in general, installed underground and therefore appropriate for areas where land is limited • been pre-fabricated from e.g. fibreglass and used as final step for emergency sanitations(BORDA 2009)
  13. 13. Cont. • Long life – at least 100 years • needs expert design • Biogas can be recoverd 13 Advantages: • extremely stable to hydraulic shock loads • high treatment performance • simple to construct • low operating cost • low space required – being subsoil • 60%-90% low electrical requirements • low sludge generation • No foul odour 7. Advantages :
  14. 14. Example 1 14 Biogas settler as settlement compartment (near completion) at Pestalozzi School, Zambia Source: http://www.germantoilet.org/ 8. Concept
  15. 15. Example 2 15 The AD under construction, down pipes and perforated slabs to support filter media in the Anaerobic Filter (AF) sections, pouring AD’s concrete slab at Pestalozzi School, Zambia Source: http://www.germantoilet.org/ 8. Concept
  16. 16. Example 3 16 AD (part of DEWATS) at Adarsh Vidyaprasarak Sanstha’s College of Arts & Commerce, India Source: N. Zimmermann 8. Concept
  17. 17. Example 4 17 AD (part of DEWATS) at Sunga Wastewater Treatment Plant, Kathmandu, Nepal Source: N. Zimmermann 8. Concept
  18. 18. Example 5 18 AD Tank at Vascon Engg Ltd for Labour Camp 45 CMD Sewage Treatment Plant, Mumbai, India Source: Chemtronics 8. Concept
  19. 19. Example 6 19 Ozonator & Polishing Equipments at Vascon Engg Ltd for Labour Camp 45 CMD Sewage Treatment Plant; reclaimed water used for construction & concrete curing, Mumbai, India Source: Chemtronics 8. Concept
  20. 20. Example 7 20 AD+ Tank with pipe grid & Advance tertiary plant , reclaimed water of potable quality, used in industrial production -12 CMD Sewage Treatment Plant, Craftmann Automation , Indor, India Source: Chemtronics 8. Concept
  21. 21. Example 8 21 8. Concept Manipal Hospital - Bangalore Volume: 600m3/day In use since: June 2008 Discharge standard: BOD <10mg/l Reuse: Toilet flushing
  22. 22. 22 Model no. Capacity AD Tank Area Plant Room Power AD+/STP-20 20CMD 50 m2 x 3.0 m (D) 6.0 m2 x 3.0 m (H) 1.0 kW AD+/STP-35 35 CMD 90 m2 x 3.0 m (D) 7.0 m2 x 3.0 m (H) 1.0 kW AD+/STP-50 50 CMD 150 m2 x 3.0 m (D) 8.0 m2 x 3.0 m (H) 1.0 kW AD+/STP-75 75 CMD 180 m2 x 3.0 m (D) 10.0 m2 x 3.0 m (H) 1.0 kW AD+/STP-100 100 CMD 230 m2 x 3.0 m (D) 15.0 m2 x 3.0 m (H) 2.0 kW AD+/STP-140 140 CMD 310 m2 x 3.0 m (D) 18.0 m2 x 3.0 m (H) 2.0 kW AD+/STP-200 200 CMD 450 m2 x 3.0 m (D) 20.0 m2 x 3.0 m (H) 2.0 kW AD+/STP-250 250 CMD 550 m2 x 3.0 m (D) 22.0 m2 x 3.0 m (H) 2.0 kW AD+/STP-300 300 CMD 660 m2 x 3.0 m (D) 25.0 m2 x 3.0 m (H) 2.5 kW AD+/STP-375 375 CMD 830 m2 x 3.0 m (D) 27.0 m2 x 3.0 m (H) 2.5 kW 8. Available Models [with tertiary treatment]
  23. 23. 23 Cairn India Limited D G Infrastructure Vascon Engineers Essar Limited Akash Developer Craftsman Automation Rhythm Realty Lotus IT Park Yekshashree Beverages Hospital 10. Reference Sites
  24. 24. 24 11. References BORDA (2009): EmSan - Emergency Sanitation. An innovative & rapidly installable solution to improve hygiene and health in emergency situations (Concept Note). Bremen: Bremen Overseas Research and Development Association (BORDA) EAWAG/SANDEC (2008): Sanitation Systems and Technologies. Lecture Notes. (=Sandec Training Tool 1.0, Module 4). Duebendorf: Swiss Federal Institute of Aquatic Science (EAWAG), Department of Water and Sanitation in Developing Countries (SANDEC) FOXON, K.M., PILLAY, S., LALBAHADUR, T., RODDA, N., HOLDER, F., BUCKLEY, C.A. (2004): The anaerobic baffled reactor (ABR)- An appropriate technology for on-site sanitation. In=Water SA Vol. 30 No. 5 (Special edition) MOREL A., DIENER S. 2006. Greywater Management in Low and Middle-Income Countries. Review of different treatment systems for households or neighbourhoods. Duebendorf: Swiss Federal Institute of Aquatic Science and Technology (Eawag). SANIMAS (2005): Informed Choice Catalogue. PPT-Presentation. BORDA and USAID SASSE, L. (1998): DEWATS Decentralised Wastewater Treatment in Developing Countries. Bremen: Bremen Overseas Research and Development Association (BORDA) SINGH, S., HABERLA, R., MOOG, O., SHRESTA, R.R., SHRESTA, P., SHRESTA, R. (2009): Performance of an anaerobic baffled reactor and hybrid constructed wetland treating high-strength wastewater in Nepal- A model for DEWATS. In: Ecological Engineering 35. 654-660 TILLEY, E., LUETHI, C., MOREL, A., ZURBRUEGG, C., SCHERTENLEIB, R. (2008): Compendium of Sanitation Systems and Technologies. Duebendorf and Geneva: Swiss Federal Institute of Aquatic Science (EAWAG) & Water Supply and Sanitation Collaborative Council (WSSCC) U.S. EPA (2006): Emerging Technologies for Biosolids Management. (=EPA 832-R-06-005). United States Environmental Protection Agency, Office of Wastewater Management
  25. 25. 25 Thanks For Your Precious Time For More Information : visit : www.chemtronicsindia.com mail : response@chemtronicsindia.com call : +91-93212 34527

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