Rehabilisation system - Solution from 3 322 €
Problems
-Septic odours and efflueents acidity in anaerobic environment
-Gas H2S -Olfactory nuisances
-Structure breakdown: reinforced concrete
-Toxicity
Solution : Treatment of gazous sky in the canvas
- Materiel : AtomizerBox One (data link).
- Product : NORASYSTEM C 503 L0 (data link).
- Determination : 2%
- Hourly cost : 0,71 € /H/Bâche
Benefits
-No changes in of water, no change of downstream processing.
If the drain materials come from non-collective sanitation system and are collected by hydro-curing trucks then dumped at the station. They are 20 times more concentrated than wastewater.
Problems
- Septic odors (H2S, Mercaptans)
Solution : Treatment of gaseous streams freed by de-stuffing.
- Material : AtomizerBox Plug&Spray (data link).
- Produit : NORASYSTEM C 503 L0 (data link).
- Dosage : 0,1 et 1 %
- Average hourly cost : = 1,80 €/H for 4 nozzles.
The “dégrilleur” screen is designed to retain large materials and all kinds of waste in sewage water. The de-greaser enables retention of fats (by flotation) and sands (by decantation). Fats and sands are stored in two pits and evacuated by hydro-curing trucks.
Issues / Problems
-Arrival of gross water and screenings
-Basin (s) of de-sanding and degreasing.
-Buckets of storage before removal (fegects fro screenings, sand, fats).
-Building of pre-treatment
-Access doors
Solution: rocessing gazeous clouds of basins and of the screening buckets.
- Hardware : AtomizerBox Plug&Spray ( data link ).
- Produit : NORASYSTEM C 503 L0 ( data link ).
- Amounts : 1 %
- Sequences : 30s marche, 2min intervalle
- Average hourly cost : = 0,71 €/H for 4 nozzles
- 16 hours / day work load = 351€/month
Biological treatment (aeration basin) - solution from 11 301 € HT*
* for a pool of 50 m of perimeter
Micro-organisms feed on pollution and multiply, nitrogen is eliminated in form of nitrogen gas and returned to the atmosphere by aerobic and anaerobic phases which allow for nitrification process (nitrogen nitrite oxidation) de-nitrification (reduction of nitrites molecular nitrogen). There is flake forming.
Issues / Problems
-Ammonia, H 2S, Mercaptans
Solution : Processing gas cloud basins. Establishment of spray nozzles around the edge of the basin.
- Material : SprayerBox ( data link ).
- Product : NORASYSTEM C 503 L0 ( data link ).
- Dosage : 0,02%
- Function : 2/3 of the time
- For 32 nozzle is 0,92 €/H
- To work 16 hours / day = 449€/mois
The clarifier allows decantation by flake gravity. A part of the formed mud is then sent for fermentation of the aeration basin. Treated waste water is retrieved by overflow, then via a channel are returned to the middle.
Issues / Problems
- Ammoniac, H2S, Mercaptans
- Material : SprayerBox (data link).
- Product : NORASYSTEM C 503 L0 ( data link ).
- Dosage : 0,02%
- Steps : 2/3 of the time
- For 32 nozzle is 0,92 €/H
- To work 16 hours / day= 449€/month
Sludge is retrieved from clarifier and pre-thickened in a static thickener. They are ejected either to be thickened (liquid sludge 60 g/l), or dehydrated (Pasty sludge to 200 g/l). Thickened sludge is recoverable by agricultural spraying.
Issues / Problems :
- Ammoniac, H2S, Mercaptans
Solution : Implementation of nozzle broadcast around the sass to handle the building’s atmosphere and to doors opening vacuum effect.
- Material : AtomizerBox (lien fiche produit).
- Produit : NORASYSTEM C 503 L0 (lien fiche produit).
- Level needed : 1 %
- Séquence : 30 s works, 2 min interval
- Average hourly cost : = 0,71 €/H for 4 nozzles
- For 16 hours / day = 351€/month
The physico-chemical absorption techniques allows for the transfer smelly gas and phase VOC compounds to an aqueous state via Exchange columns. Aqueous solutions used in the towers of the scrubber are most often associated with chemical products specifically targeted (bleach, sulfuric acid, soda...) for a complete cleaning.
Issues / Problems
- Smells issued of recirculation water
Solution: Treatment of final tower by the additions of reagents.
- Material : Dosing pump
- Product : NORASYSTEM C 503 L0 ( data link ).
- Determination : 0,025%
- Cost = 11,2 €/m3 devolution of water (overflow)
Solar drying is a dehydration solution to achieve the necessary dryness and stabilization then the transportation of the sludge.
Issues / Problems
-Ammonia, smells of sludge
Solution : Pre-treatment of the air before extraction
- Material : SprayerBox ( data link).
- Product : NORASYSTEM C 503 L0 ( data link).
- Amount : 0,1%
- Sequence : 30 sec walk, 5 minute interval (regulated by moisture probe)
- For 66 nozzles nozzle is 1,04 €/H
- For work 16 hours / day = 508 €/month