Wastewater treatment equipment
AssigneeSanyo Electric Co., Ltd.
InventorsHiroyuki Umezawa, Masahiro Iseki, Motoyuki Tsuihiji
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Abstract
A wastewater treatment equipment of an embodiment of the present invention neutralizes a WTBT 12 by introducing the WTBT 12 containing fluorine components to a first treatment tank 11A and by introducing an NaOH solution from a second path P2 and so on. The fluorine components contained in the WTBT 12 is then fixed as calcium fluoride by adding calcium components to the WTBT 12 stored in a second treatment tank 11B. Furthermore, MTBR like calcium fluoride are separated from the WTBT in a third treatment tank 11C. The separated MTBR are rinsed and dewatered in a filter press 17.
Claims6
A wastewater treatment equipment comprising:
- a first tank storing a wastewater containing a material comprising fluorine;
- a neutralizing device adding sodium hydroxide or potassium hydroxide to the first tank so as to neutralize the wastewater;
- a second tank storing the neutralized wastewater;
- a forming device adding a calcium compound to the second tank so as to form calcium fluoride;
- a third tank storing the wastewater containing the calcium fluoride;
- a separating device separating the calcium fluoride from the wastewater stored in the third tank,
- wherein the separating device comprises a filtration equipment and a self-assembled membrane comprising calcium fluoride formed on a surface of the filtration equipment, and the filtration equipment is configured so that the self-assembled membrane comprising calcium fluoride is peeled off a dewatering device for dewatering the peeled off calcium fluoride;
- and a path for transporting the dewatered calcium fluoride to the second tank.
Dependencies are inferred from the claim text.