A  magne(c  force-­‐based  wastewater  treatment  system  for  coal  mining  industry    A  fully  automa(c  and  underground  solu(on  to  underground  influent      Included  in  Na(onal  Key  Energy  Technology  Promo(on  List  by  Na(onal  Development  and  Reform  Commission  of  China      Invented  by  SCIMEE  group  

ReCoMagMW ReMagDisc  +  Coagula0on  +  MagCarrier  

H4p://www.facebook.com/recomag  H4p://www.scimee.com  

Influent

Water holding tank (underground)

Pump to surface

Sedimentation tank

Filtration Unit

Water holding

tank

Dewatering machine

Chemical mixer

Sludge concentration tank

Recycle tank

Coal  Mining  Opera(on  Faces    Three  Influent-­‐related  Challenges    

1  

2  

3  1.  Frequent cleanup of sludge in

the underground water holding tank

2.  Frequent clogging of the central pump

3.  Surface sedimentation tank need to be warmed up to avoid freezing during winters

Key advantages of the ReCoMagMW system: •  No secondary sedimentation tank, No filtration unit •  No more sludge cleanup for the underground water holding tank •  No more clogging of the underground pump •  Operates automatically •  Low capital and operation cost •  Small footprint

Conventional System ReCoMagMW System

Influent

Influent

ReCoMagMW Water holding

tank (underground)

Dewatering machine

Pump to surface

Pump to surface

Sedimentation tank

Filtration Unit

Water holding

tank

Dewatering machine

Chemical mixer

Sludge concentration tank

Reuse/discharge Further purification

Water holding

tank

Water holding tank

Recycle tank

ReCoMagMW  Solves  All  Three  Challenges  by    Trea(ng  Wastewater  Underground  

1  

2  

3  

ReCoMag ReMagDisc  +  Coagula0on  +  MagCarrier  

ReCoMag  is  a  technology  that  explores  ferromagne(c  micropar(cle  carriers  (aka  MagCarrier)  to  render  nonferromagne(c  solids    tractable  to  the  rare-­‐earth  magnet-­‐based  separator,  ReMagDisc  .  

 The  Principle  of  ReCoMag  

(1)  Condition wastewater by adding the MagCarrier (a)

(2) Co-precipitate solids and MagCarrier into flocs by adding coagulant (b) and flocculant (c) in a 3-min process, consequently rendering the solids susceptible to magnetic force

(3) The ReMagDisc Separator (d) continuously removes floating flocs

N S

Suspended solids

Dispersed solids

(1)   (2)   (3)  

MagCarrier (a)

Coagulant (b)

ReMagDisc Separator (d) Flocculant (c)

A  Repertoire  of  ReCoMag  Systems  

SCIMEE offers a variety of rare-earth permanent magnet-based wastewater treatment systems that have been tailored for Oil and Gas Industry (ReCoMagOG), Resource Mining Industry (ReCoMagMW), Inland Water Bodies (ReCoMagHiSC), Municipal Sewage Treatment Facilities (ReCoMagHiSC) Emergent Water Treatment (ReCoMagMobile) and Research Institutions (ReCoMagLab).

The ReCoMagMW System is a Market-proven Underground Solution to Underground Influent

Examples of Delivered Projects (Processing Capacity)

A  Low-­‐cost,  Small  Footprint  and  Fully  Automa(c  Wastewater  Treatment  System  in  the  Mining  Well    to  Reclaim  Influent  for  Reuse  in  Mining  Opera(on    

Water  Treatment  System:  ReCoMagMW  system    Processing  Capacity:  12,000  cubic  meters  per  day  

Project  Type:  Build-­‐Transfer  (BT)  

Client:  Changzhi  Coal  Mine  Project  Loca(on:  Shanxi  Province,  China  

漳村煤矿井下处理工程 Processing capacity: 14400 m3/d

Underground Influent Treatment with ReCoMagMW at Zhangchun Coal Miner

赵官煤矿井下处理工程 Processing capacity: 14400 m3/d

Underground Influent Treatment with ReCoMagMW at Zhaoguan Coal Miner