Performance Study Of Calcium Hypochlorite On Wastewater Treatment System From Biomass Gasification Water Scrubber
Performance of calcium hypochlorite [Ca(OCI)2] was investigated to determine the suitability to treat the wastewater from biomass gasifier water scrubber. This research also reviews the technical applicability of physic-chemical treatment for the removal of heavy metal(zinc) from Biomass Gasifica...
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| Format: | Monograph |
| Language: | English |
| Published: |
Universiti Sains Malaysia
2017
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| Online Access: | http://eprints.usm.my/53204/ http://eprints.usm.my/53204/1/Performance%20Study%20Of%20Calcium%20Hypochlorite%20On%20Wastewater%20Treatment%20System%20From%20Biomass%20Gasification%20Water%20Scrubber_Lee%20Shu%20Xian_K4_2017.pdf |
| Summary: | Performance of calcium hypochlorite [Ca(OCI)2] was investigated to
determine the suitability to treat the wastewater from biomass gasifier water
scrubber. This research also reviews the technical applicability of physic-chemical
treatment for the removal of heavy metal(zinc) from Biomass Gasification Plant
(BGP)-generated tar-containing wastewater. A particular focus is given to coagulant
precipitation through Jar Test to determine the optimal operating conditions which
include pH, dose required, initial metal concentration and treatment performance. It
is evident from the experiment that calcium hypochlorite are the most frequently
studied and widely applied for the treatment used for disinfectant, chlorination,
oxidant and removal of metal-contaminated wastewater. 1g/L of calcium
hypochlorite has achieved a complete removal of zinc with an initial concentration of
31.5 mg/L. The results are comparable to that of different retention times and
temperature. Regarding the available chlorine content, the treated solutions tend to
be stable to 1 days of storage when kept at 6°C or at 20°C as the heat contribute to
the instability of the solutions. Calcium hypochlorite solutions are extremely alkaline
and showed an increase in pH when the concentration of calcium hypochlorite
increase. It is important to note that overall treatment cost of wastewater varies,
depending on the process employed, quality of wastewater and the local conditions.
In general, the technical applicability, plant simplicity and cost effectiveness are the
key factors in selecting the most suitable treatment for inorganic effluent. |
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