US 11,912,212 B2
Additive dosing sub-system for a vehicle wastewater management system
Jacco Van Beek, Breda (NL); Joop Van Leeuwen, Zundert (NL); Tijs Slezak, Breda (NL); Wilco Wessels, Ulvenhout (NL); Ruud Van Den Heijkant, Teteringen (NL); Ronald Van Der Hoeven, The Hague (NL); Mark Mulders, Breda (NL); Tom Kieboom, Dordrecht (NL); Didier Van Riel, Breda (NL); Mitchell Van De Sande, Tilburg (NL); and Dineke Van Duijn, Etten-Leur (NL)
Assigned to Thetford BV, Etten-Leur (NL)
Filed by THETFORD BV, Etten-Leur (NL)
Filed on Nov. 24, 2020, as Appl. No. 17/102,909.
Application 17/102,909 is a continuation of application No. 15/968,132, filed on May 1, 2018.
Prior Publication US 2021/0078508 A1, Mar. 18, 2021
Int. Cl. B60R 15/04 (2006.01); E03D 9/10 (2006.01); B63B 29/14 (2006.01); B61D 35/00 (2006.01); C02F 1/00 (2023.01); C02F 103/00 (2006.01)
CPC B60R 15/04 (2013.01) [B61D 35/007 (2013.01); B63B 29/14 (2013.01); C02F 1/001 (2013.01); E03D 9/10 (2013.01); C02F 2103/002 (2013.01); C02F 2103/005 (2013.01); C02F 2201/005 (2013.01); C02F 2209/40 (2013.01); C02F 2303/16 (2013.01); C02F 2303/26 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An additive dosing system for a wastewater management system of a vehicle including a black water holding tank, a grey water holding tank and a toilet, the additive dosing system comprising:
a controller;
a level sensor for sensing a predetermined volume level of grey water in the grey water holding tank;
a grey water additive dispenser in fluid communication with the grey water holding tank;
a black water additive dispenser in fluid communication with the toilet or the black water holding tank;
a flush water additive dispenser in fluid communication with the toilet; and
a pump for each additive dispenser, each pump controlled by the controller to dispense an additive from each additive dispenser to a corresponding one of the holding tanks, or the toilet,
wherein the dosing system allows three distinct additives to be introduced into the wastewater management system as water progresses through the wastewater management system from the grey water holding tank to the toilet and then to the black water holding tank,
wherein the controller is operative to automatically dose the grey water holding tank with a grey water additive in response to detection of the predetermined volume level of grey water in the grey water holding tank by the level sensor.