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Single-Step Flocculation for reclaiming Parts Washer wastewater?
[COLOR=#7F8C8D][FONT=Roboto]Hello,[/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]I am interested in knowing if a single-step wastewater clarifier/reclaimer can be made for used Parts Washer effluent.
References can be found here :-[/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]1. [URL]https://www.stingraypartswasher.com/stingray-mart-eq-1-wastewater-processing-system.html[/URL]
[/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]2. [URL]https://www.hpipro.com/productdetail/roc-2/[/URL]
[/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]I then spoke to a company in the US who have sent me some samples as per their experience of similar applications. [/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]Link - [URL]https://www.environmental-expert.com/products/cleartreat-model-2305-g-clay-and-flocculant-formulation-601623[/URL]
[/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]The equipment we would like to design will include a Treatment tank with a Mechanical stirrer. The effluent will be fed into the tank where the flocculant is added and then stirred.
After flocculation is complete, the liquid is passed through a Filter Paper Bed and collected in a collection tank underneath. [/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]This water can then be sent through some post-filtration to remove odor/color (would like your suggestion for this) and then re-used in the same machine / different process / gardening etc.
[/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]i have tried a pre-pre-preliminary trial with a sample of wastewater i had collected during a visit to a client. The wastewater was basically effluent from an Ultrasonic Part Washer. Effluent consisted of an alkaline cleaner in 3-5% concentration with water used for over 2 weeks. There is a thick layer of oil and the liquid has quite a fair bit of suspended particles from the washer. [/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]Here's a pic of the effluent - [/FONT][/COLOR][ATTACH=CONFIG]2417[/ATTACH][COLOR=#7F8C8D][FONT=Roboto]
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[/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]So i have treated 100ml samples of this liquid at a time with 0.5-2% of the Cleartreat flocculant. Four different Flocculants were tried with varying degree of results. For agitation, I stirred using a spoon :)
[/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]I observed that most Flocculant powders worked upto a certain extent at the first dosage of 0.5%, in that they helped form Flocs that floated on the surface of the liquid [/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto] [/FONT][/COLOR][ATTACH=CONFIG]2418[/ATTACH][COLOR=#7F8C8D][FONT=Roboto]but could not clarify the water as it remained turbid. Further additions upto 2% did not really help.
[/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]The size of Flocs formed were different for each Cleartreat sample.
[/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]I then went ahead and filtered a particular treated liquid sample and what I observed was that most suspended impurity was filtered out, but the filtered liquid was yellow in color. Pic - [/FONT][/COLOR][ATTACH=CONFIG]2419[/ATTACH][COLOR=#7F8C8D][FONT=Roboto]The pH of the effluent checked before treatment was approx. 9.5. I did not do any pH adjustment nor did I check the pH of the sample post treatment.
[/FONT][/COLOR][COLOR=#7F8C8D][FONT=Roboto]Any help would be great. Thanks [/FONT][/COLOR]