Process and system for treating waste water
- Kennewick, WA
- Pasco, WA
A process of treating raw or primary waste water using a powdered, activated carbon/aerated biological treatment system is disclosed. Effluent turbidities less than 2 JTU (Jackson turbidity units), zero TOC (total organic carbon) and in the range of 10 mg/l COD (chemical oxygen demand) can be obtained. An influent stream of raw or primary waste water is contacted with an acidified, powdered, activated carbon/alum mixture. Lime is then added to the slurry to raise the pH to about 7.0. A polyelectrolyte flocculant is added to the slurry followed by a flocculation period -- then sedimentation and filtration. The separated solids (sludge) are aerated in a stabilization sludge basin and a portion thereof recycled to an aerated contact basin for mixing with the influent waste water stream prior to or after contact of the influent stream with the powdered, activated carbon/alum mixture.
- Research Organization:
- BATTELLE MEMORIAL INSTITUTE
- DOE Contract Number:
- AC06-76RL01830
- Assignee:
- Battelle Pacific N. W. Laboratories (Richland, WA)
- Patent Number(s):
- US 4076615
- OSTI ID:
- 863020
- Country of Publication:
- United States
- Language:
- English
Similar Records
Treatment of wastewater from a paint industry using polyelectrolytes
Treatment of acid mine drainage
Related Subjects
10
acidified
activated
activated carbon
added
aerated
alum
basin
biological
carbon
chemical
chemical oxygen
cod
contact
contacted
demand
disclosed
effluent
filtration
flocculant
flocculation
followed
influent
jackson
jtu
lime
mg
mixing
mixture
obtained
organic
organic carbon
oxygen
oxygen demand
period
ph
polyelectrolyte
portion
powdered
primary
prior
process
raise
range
raw
recycled
sedimentation
separated
sludge
slurry
solids
stabilization
stream
stream prior
toc
total
total organic
treating
treating waste
treatment
turbidities
turbidity
units
waste
waste water
water
water stream
zero