sullage

n. refuse, sewage; silt

Greywater, sometimes spelled graywater, grey water or gray water and also known as sullage, is non-industrial wastewater generated from domestic processes such as washing dishes, laundry and bathing. Greywater comprises 50-80% of residential wastewater. Greywater is distinct from blackwater in the amount and composition of its chemical and biological contaminants (from feces or toxic chemicals). Greywater gets its name from its cloudy appearance and from its status as being neither fresh (white water from groundwater or potable water), nor heavily polluted (blackwater). According to this definition wastewater containing significant food residues or high concentrations of toxic chemicals from household cleaners etc. may be considered "dark grey" or blackwater.
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(n.)
The scoria on the surface of molten metal in the ladle.
  

(n.)
That which sullies or defiles.
  

(n.)
Silt; mud deposited by water.
  

(n.)
Drainage of filth; filth collected from the street or highway; sewage.
  

sullage /'sʌlidʤ/
danh từ bùn rác, rác rưởi; nước cống
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