Sedimentation of tannery wastewater

Tannery wastewater is a powerful pollutant It can cause severe environmental problems related to its high chemical oxygen demand (COD) together with elevated ,...

Sewage treatment

Sewage treatment is the process of removing contaminants from municipal wastewater, containing mainly sewage plus some industrial wastewater Physical, chemical, and biological processes are used to remove contaminants and produce treated wastewater (or treated effluent ) that is safe enough for release to the environment...

Treatment of tannery wastewater susan

Flocculation, or the mixing of flocculants with the wastewater, is carried in tanks fitted with agitators, as shown in illustration 8 In small installations the sedimentation tanks can be made of brick square with the bottom of a truncated pyramid, or in metal or fiberglass with vertical cylindrical shape with a conical base; in larger installations the basins are usually made of masonry ....

Tannery wastewater treatment plant

Tannery wastewater treatment divided in four line A typical example of physical-chemical treatment plant is made up of four separate discharge lines: pre-tanning, chrome tanning, fattening, dyeing ,...

Coagulation

Sep 15, 2009· A study was conducted to treat the tannery wastewater through coagulation-flocculation-sedimentation Alum was used as coagulant with cationic and anionic polymers as coagulant a The results were subsequently compared with ,...

INTERNATIONAL JOURNAL OF SCIENTIFIC ,

Wastewater Jessie O Samaniego, Maria Antonia N Tanchuling , [12], in tannery wastewater removed 712-832% of Cr [13] Therefore, proper sedimentation process is important to reduce the suspended solids and heavy metal , wastewater sedimentation tanks, settling column tests are ....

Chromium(III) removal from tannery wastewater by ,

The average of chromium concentration was 2660 mgL-1 in the raw tanning wastewater The results showed that the wastewater from tannery process is one of the most important sources which pollutes environment as the concentration of chromium and other harmful material in the wastewater is ,...

Paper ID: EE

As tannery wastewater is highly toxic and toxic impurities hinder the microbial activities, so raw sample from tannery had to be acclimatized In biological process, oxic-anoxic-oxic cycle with , sedimentation in secondary clarifier, color reduction percentage was 68% and residual value was 283 Pt-Co units But this value was very high...

Wastewater treatment

Wastewater treatment is a process used to convert wastewater into an effluent that can be returned to the water cycle with minimum impact on the environment, or directly reused The latter is called water reclamation because treated wastewater can then be used for other purpos...

5 HANDLING OF BY

In view of the high BOD-load in the wastewater of tanneries, dairies and slaughterhouses, anaerobic systems seem to be appropriate wastewater purification systems Simple anaerobic systems may achieve 50% of BOD-purification (table 21), while high-rate anaerobic systems may result in 90% of BOD-purification (table 22)...