Reusing sludge generated from surface water and waste water treatment

What are the possible ways for reusing sludge produced from surface water and waste water treatment ? 

Taxonomy

• Water
• Treatment
• Sludge Separation
• Sludge Treatment
• Drinking Water Treatment
• Sludge Management
• Wastewater Treatment
• Water Quality
• Water Supply
• Hydrology

15 Answers

1. It will depend on the amount of sludge you are talking about. If you want to add value to your sludge the best is to dry it (solar or thermal) and then used as fertilizer or source of energy.

2. wastewater Treatment has plenty Calofic Value and can be use as green energy pellets and water can be a process water....

3. Sludge from human waster processing plants and from water treatment plants are two entirely different processes.  With water treatment in Florida lime stone is used to soften the water.  Once the limestone rock breaks down to a baby powder it is pumped into a pit where it is dried then can be used as clean fill.  Once laid out and dried the material goes back to its solid state giving an almost concrete base.  I have been in the sludge hauling and landfill business in South Florida since 1972.

   https://www.youtube.com/channel/UCvpAUeNAg2946-GlQqyUHrg?view_as=public

   search for my video called Sludge King.

   1 Comment

   1. Dear sir do you have any experience with bio catalysts till now ? or have you used bio organic catalyst ?

4. By adding bio-organic catalyst to the sludge it would make it odourless and usable as compost/soil. ............not all  solutions have to be complicated. The attached image will explain how the technology works in principle. Feel free to ask any more info.

5. What is the sludge content? Btw, sludge here is the unwanted material which is filtered out . Therefore, why do you want to reuse it ? I'm asking because only with your answer detail, can I think of any way to reuse the sludge. Walter below points to disposal of sludge but you want to reuse it. Please disclose the application.

6. In my recent thesis work, I have summarized the possibile ways to optimize WWTP sludge treatment and disposal. Take a look here:

   https://www.politesi.polimi.it/bitstream/10589/101303/1/2014_12_Malacrida.pdf

   A case study is shown too. 

7. It is well known that sewage sludge can be activated by carbonization at high temperature or by chemical activation with mineral acids ( sulphoric acid). The obtained product can be used as adsorbent for the removal of organic and inorganic pollutants from wasewater and polluted water.

8. Yes there is a way to detoxify it and convert it to be usable as a fertilizer, or just safely disposed. We have a specific blend of volcanic sulphate minerals that will detoxify the sludge, and convert it into safe and beneficial.

9. The type of sludge we can used as the following:
   

   • Cement,
     
   • Gas generated,
     
   • Compost/ Manure;
     
   • Fill up the potholes at the road;
     
   • Fossil
     

10. After classifying the sludge, is where we can know the uses of particular/ certain sludge.
    

11. In my knowledge, the only sustainable way of reusing sludge is combustion.

12. Biological sludges generated by activated sludge treatment of human wastes may be land applied. Generally this material has limited value as a fertilizer because the nutrient concentrations are low. The sludge may be burned as fuel, but the resulting fuel value is also low. Sludge may also be composted although this process involves a higher processing cost. There are some newer technologies that are able to remove the nitrogen and phosphorus from sludge.
    

13. Sludge is of different quality. it varies with what source/s and conditions of a sludge. Some Industrial Plants are re-using their effluent after the Membrane Biological Process as Process Water. Sludge per se after the complete oxidation of organic and inorganic wastes are mostly good source of agricultural protein. But it has to undergo a process otherwise it emits foul odour during decomposition process of organic/inorganic wastes.

14. Sludge can be used for agricultural crops, woodlots and landscape and recreational area.

    I would also like to share article of "How the chinese are turning fecal sludge into black gold

    http://www.livemint.com/Industry/vO6rTYBZ4xXiThzfaTrrjL/How-the-Chinese-are-turning-fecal-sludge-into-black-gold.html?utm_source=copy
    

    
    

15. If it is not generated with sewage from industrial area, sludge can be used for agricultural purpose as a fertilizer.

    1 Comment

    1. Depending on the type and nature of sludge, it has many applications such as agriculture (manure) the most used i guess.