Hi Sanjay, interesting ...

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Hi Sanjay, interesting situation you have! Understand that the site is also subject to freeze and thaw, given the altitude? My initial thoughts: - need to understand the inflow patterns, especially during the winter time (how many people/toilet blocks per day/week/month? - some kind of a balance storage for inflows during winter could be helpful - is there electricity on site? - what is the range of temperatures over the four seasons? - is stormwater collected on site? - what is the terrain (how deep can you excavate?) - is there anyone to service the WWTP? Sorry, more questions than answers at this stage. Regards, Iouri

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Louri,
I'm a big fan of freeze and thaw dewatering and it is the way that we implement biosolids management all the time in the arctic. I was wonder if that what you meant by freeze and thaw our where you suggesting to consider structural aspects of freeze and thaw cycles?
Thanks,
Peter Christou

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Hi Iouri; No fewer questions then I have... so let me go in sequence. Q1 need to understand the inflow patterns, especially during the winter time (how many people/toilet blocks per day/week/month? A1: Variable but these are basically catering to toilets, kitchen and some bathing in winter so in the range of 50 LPCD. Populations will vary from 15-100 daily depending on site. Think in terms of mountaineering camps, trekking campsites, etc. Q2: some kind of a balance storage for inflows during winter could be helpful - A2: What do you suggest? Q3: is there electricity on site? - A3: Yes otherwise generators can be used or solar can be looked at as well. Q4: what is the range of temperatures over the four seasons? A4: 20C to -30C Q5: is stormwater collected on site? A5: No and Not required Q6: - what is the terrain (how deep can you excavate?) A6: Rock surface unless there is snow cover (3-5m permanent at higher elevations) Q7: is there anyone to service the WWTP? A7: Yes, people can be trained.

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