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Chemtronics Green STP AD+

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Chemtronics Technologies (India) Pvt. Ltd.
Chemtronics Technologies (India) Pvt. Ltd.

This document provides an overview of a High Rate Anaerobic Digester (HRAD) system with polishing for wastewater treatment. It describes the HRAD process which uses alternating standing and hanging baffles to facilitate contact between wastewater and residual sludge, allowing for high treatment rates. The system can optimize anaerobic digestion by treating all types of wastewater for reuse or disposal. Additional tertiary treatment like disinfection and filtration provides polished effluent suitable for various reuse applications. The HRAD achieves high removal of contaminants like COD, BOD, TSS and pathogens. It requires relatively low maintenance and has advantages of being stable, efficient, and producing low sludge and biogas

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High Rate Anaerobic Digester (HRAD) 1 With Polishing “+” factor Introducing
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
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 construction industrial use production process cooling tower flushing irrigation processoverview
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 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 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 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 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
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
Examples 2 11 Measuring sludge levels Source: K.P. Pravinjith 5. Operation and maintenance
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)
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 :
Example 1 14 Biogas settler as settlement compartment (near completion) at Pestalozzi School, Zambia Source: http://www.germantoilet.org/ 8. Concept
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
Example 3 16 AD (part of DEWATS) at Adarsh Vidyaprasarak Sanstha’s College of Arts & Commerce, India Source: N. Zimmermann 8. Concept
Example 4 17 AD (part of DEWATS) at Sunga Wastewater Treatment Plant, Kathmandu, Nepal Source: N. Zimmermann 8. Concept
Example 5 18 AD Tank at Vascon Engg Ltd for Labour Camp 45 CMD Sewage Treatment Plant, Mumbai, India Source: Chemtronics 8. Concept
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
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
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 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 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 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 Thanks For Your Precious Time For More Information : visit : www.chemtronicsindia.com mail : response@chemtronicsindia.com call : +91-93212 34527

More Related Content

Chemtronics Green STP AD+

  • 1. High Rate Anaerobic Digester (HRAD) 1 With Polishing “+” factor Introducing
  • 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. 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
  • 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 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 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 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 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. 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. Examples 2 11 Measuring sludge levels Source: K.P. Pravinjith 5. Operation and maintenance
  • 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. 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. Example 1 14 Biogas settler as settlement compartment (near completion) at Pestalozzi School, Zambia Source: http://www.germantoilet.org/ 8. Concept
  • 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. Example 3 16 AD (part of DEWATS) at Adarsh Vidyaprasarak Sanstha’s College of Arts & Commerce, India Source: N. Zimmermann 8. Concept
  • 17. Example 4 17 AD (part of DEWATS) at Sunga Wastewater Treatment Plant, Kathmandu, Nepal Source: N. Zimmermann 8. Concept
  • 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. 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. 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. 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 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 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 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 Thanks For Your Precious Time For More Information : visit : www.chemtronicsindia.com mail : response@chemtronicsindia.com call : +91-93212 34527