Volume No. 7 Issue No.: 2 Page No.: 660-667 Oct. - Dec. 2012

 

TREATMENT OF SEWAGE THROUGH PHYTOTECHNO- LOGICAL STUDIES WITH CONSTRUCTED WETLAND USING Eichhornia crassipes

 

Chavan B. L.* and Dhulap V. P.

Department of Environmental Science, School of Earth Sciences, Solapur University, Solapur, Maharashtra (INDIA)

 

Received on : July 05, 2012

 

ABSTRACT

 

Water hyacinth (Eichhornia crassipes) is a free floating aquatic weed, which creates a serious problem of eutrophication and imposes harm to the aquatic life, causes potential nuisance in irrigation, power generation and in domestic water usages. But, this weed can be biotic resource due to its several properties which are useful in waste water treatment through Phytoremediation technology. In the present investigation, water hyacinth is used for the treatment of sewage, because of its highest pollution reduction capacity. It has been used for the treatment of sewage of Solapur city for recycling and reuses purpose. The samples of sewage with different dilutions viz. 20%, 40%, 50%, 60%, 80% and 100% were tested for the treatment. Results reveal that DO level increased after treatment from 1.3 mg/L to 3.2, TS, TDS, TSS, chlorides, nitrates are reduced by 59.93 %, 59.92%, 66.75%, 17.99 % and 86.63% respectively. The colour and odour are removed resulting clear water. The BOD and COD are reduced by 48.69% and 54.38% respectively, along with the reduction in heavy metals like Cu, Ni, Co and Fe.

 

Keywords : Phyto-technology, Constructed wetlands, Eichhornia crassipes, Root zone, Sewage treatment, Heavy metals

 

 

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