Single-Step Flocculation for reclaiming Parts Washer wastewater?

[kdv1988]

Hello,

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 :-

1.

https://www.stingraypartswasher.com/stingray-mart-eq-1-wastewater-processing-system.html

2.

https://www.hpipro.com/productdetail/roc-2/

Both these products use a Clay based Flocculant/Coagulant. Now I have done some research here in India and spoke to a bunch of manufacturers who have no experience with such Flocculants. I then spoke to a company in the US who have sent me some samples as per their experience of similar applications.
Link -

https://www.environmental-expert.co...2305-g-clay-and-flocculant-formulation-601623

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.

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.

The industry standard procedure right now is to drain the effluents from each machine into a reservoir which later goes through an Effluent Treatment Plant (ETP) and then drained/re-used. An ETP is a huge capital expenditure, and that is where we're hopeful of providing a low-cost alternative provided this can actually replace an ETP.

I have not done any Lab Tests of the effluents as the effluents will keep varying with every machine/customer.

Any guidance / help would be appreciated. Thanks.

 

[kdv1988]

BUMP!

Thought I'll bump this thread hoping for a response. Hope you guys are doing well.

So 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.
Here's a pic of the effluent -

https://ibb.co/K02SCGW

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

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 (

https://ibb.co/zQf9NMB)

but could not clarify the water as it remained turbid. Further additions upto 2% did not really help.

The size of Flocs formed were different for each Cleartreat sample.

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 -

https://ibb.co/99rdLz9

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.

Any help would be great. Thanks