We are developing mass scale low cost housing at Ahmedabad, Gujarat, India that requires treatment of 1.8 MLD sewage water daily. The treated water will be reused for flushing toilets and gardening through porous pipe. What is the best low cost and low maintenance solution? Should we go for anaerobic digestion and gasification or another surface bed treatment system. Initial cost and running maintenance should be low and affordable.
1, 8 million liter sewage is not a problem . Forget the complicated filter etc systems . Just filter the solids out of it and use it later for gasification . The sewage can be sterilized and reused . Approximately cost is around $5 million - low maintain cost - Ralph
Circumstances will determine low cost. Here are criteria developed by Severn Trent. 1. Low capital costs 2. Minimal power/electrical requirements 3. Minimal moving & mechanical components 4. Minimal sludge generation; preferably none 5. Requires minimal operator attention and licensure; preferably unskilled 6. Capable of treating water to a high standard over a range of hydraulic loading rates 7. Resistant to temperature extremes and sewage composition variability 8. Modular and relatively easy to modify or upgrade 9. Capable of accommodating intermittent flows without compromising treatment 10. Minimizes odor, fly nuisance, noise and intrusion on surrounding environment 11. Low visual/aesthetic impact and small footprint 12. No hazardous conditions We used this criteria and largely settled on building our company around fixed film processes see www.aquapoint.com. Much of the decision will relate not to capital equipment but rather to life cycle costs. Have a look at the Bioclere, which is a very versatile trickling filter over a clarifier, on the Web site and if it makes sense to you contact me directly for more detailed information. Craig Lindell
Clay, sawdust and a plastic bucket can make a water filter that catches dirt and disease-causing microbes. In the classic design, mix clay with a combustible material like sawdust or rice husks, give it a flower pot shape and fire it in a kiln. The sawdust or rice husks burn away, leaving tiny pores in the ceramic through which water filters. Organizations around the world have been using this kind of ceramic filter to reduce disease in impoverished communities for years.
Pour répondre à Roberto Scardua il n'existe aucune plante au monde capable d'épurer les eaux usées.les plantes sont uniquement là pour faire beau et pour éviter que le lit filtrant parte en putréfaction. To answer Roberto Scardua the weather does not exist any plant in the world able to purify water usées.les plants are only there to be nice and to prevent that the filtering bed leaves in putrefaction.
L'assainissement Biologique avec le concept biotechnologique du procédé "Fosse Biologique"lyseconcept est le plus économique, écologique des traitements d'épuration des eaux usées. il est globale et définitif ce qui supprime toute organisation de traitement palliatif à suivre comme la vidange et l'épandage. il s'implante en toute condition en toute situation modulable à volonté. surtout il est productif: le sutilisateurs du site pilote vont recycler leurs eaux usées pour produirte leur prope agronomie. ils procurent l'occasion d'économier de l'eau, il sosustrait les gens à la taxe d'assainissement du collectif très élevée. Son coût d'implantation est fix fois inférieur à tout autre système d'assainissement . The Biological cleansing with the biotechnological concept of the process “Pit Biological " lyseconcept is most economic, ecological treatments of purification of waste waters. it is total and final what removes any organization of palliative treatment to follow as draining and spreading. it is established in any condition in any flexible situation at will. especially it is productive: the users of the pilot site will recycle their waste waters to produce their own agronomy. they get the occasion to save water, it withdraws people from the very high tax of cleansing of the collective. it enables them to save money on the chemical domestic maintenance products Its cost of establishment is ten times lower than any other system of cleansing
Hello. Try to visit: www.jetincorp.com/residential-wastewater-treatment-plant.php They have very interesting and simple systems to this kind of application. The contact there is Mr. Grant. The systems are cheap and reliable. Regards! Léo.
Published
by Leonardo Zanata, Professor at Faculdades Oswaldo Cruz
The Earthship system of using collected water has the kitchen and toilet on the septic tank and graywater is used to grow food, this graywater system requires the plants to work properly and any plants will do. Their systems work down to 15cm of rain annually, they do use cisterns and filtration and treatment for collected water purification, their systems are up to code in the USA. However, I realize this is a distributed system and doesn't require sewage piping infrastructure or the need for a separate source of water. For centralized systems, there is no such thing as "cheap" compared to distributed water treatment.
We offer a several solutions, the "best" depends on your application and your goals. Generally speaking a activated sludge process is all you need, however if you want/need higher capacity smaller footprint you may want to go with MBBR, if you need tertiary for reuse we can add that, if you would like a low cost ultra green solution we offer bio-augmentation. All our systems are fully packaged or containerized. www.southwaterllc.com
A simple low-cost technology for onsite treatment is Constructed Wetlands. Usually the costs for operation and maintenance are very low, since these facilities are easy to run (no big mechanical parts, no need for personnel, almost automatic-natural operation, very low power consumption only for pumps). However, surface area needs are higher. There are numerous such facilities around the world now, we have also designed many and it is well proven that treated effluent can be reused for garden irrigation or toilet flushing. For applications like yours, I think you should seriously think about CWs. Let me know if I can provide any assistance.
1000 m3/day to reuse standards. I think you might need to use membrane bioreactor. But it might not be very low cost or low maintenance. But will bring the water to reuse standards for sure. Wetland can help you keep the cost low with low maintenance. But I dont think you can get reuse quality water and has a very large land requirement. Water will be good for gardening but definitely not for toilet flushing. But this might be argued by others here. AD: Needs good C/N ratio. Human waste cannot get you that. But someone else has some innovative ideas, I would like to know.