In general a commercial laundry is wildly used detergent, soap, soda and other cleaning agents for removal of stain, oil and dirt from the cloths. Therefore, surfactants are the major ingredient of laundry effluent and thus a special care should be taken to treat and disposal of it. The aim of this topic was to characterize the chemical composition and physical properties of commercial laundry effluent. People has not sufficient knowledge and information about laundry effluent to evaluate it issues of the chemical risk and its effects on receiving, discharge of it into water bodies and inland surface.
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| A Typical Laundry Unit |
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| A Typical Laundry Unit |
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| A Typical Laundry Unit |
Chemically, wastewater is composed of organic and inorganic compounds as well as various gases. Organic components may consist of greases, surfactants, oils, pesticides, phenols, etc.
It is
already discussed that in general a commercial
laundry is used detergent, soap, soda and other cleaning agents for removal of
stain, oil and dirt from the cloths.
Therefore, surfactants are the major ingredient of laundry effluent. The
commercial laundries contains Fats, oils and greases (FOG) as well as total suspended
solids (TSS), which are the major impurities of concern.
In several data analyses
are considered to characterize laundry effluent vary from precise quantitative
chemical determinations to the more qualitative “biological and physical
determination”.
BOD- 250- 300 mg/l.
DO- 0.5- 1.2 mg/l.
Oil & Grease- up to 30 mg/l.
Other than this, some heavy metal is present in the laundry effluent that is mentioned below.
Hardness- 100 mg/l,
Cu- 0.01- 0.05 mg/l,
Physically, laundry effluent is usually-
Temperature- 30-40⁰C, colour- grey, odour- musty,
Solids content of about 0.1%, and 99.9% water content. In point of suspended solids, a large amount of fabric content and deposited to primary separation and collection pit . The solids can be suspended (about 30%) as well as dissolved (about 70%). From a physical point of view the suspended solids can lead to the development of sludge deposits and develop anaerobic conditions when discharged into the receiving environment.
An attempt is made in this topic as the origin, characteristics and the most effective and economical treatment methodology for treatment of laundry effluent. The basic objective of the present investigation is to disseminate the impact of discharge of laundry effluent without treatment to the environment. It is essential to segregate domestic waste from the sanitary waste. The laundry waste should be separately treated before it is permitted to discharge into the sewer. The various treatment methodologies available for treatment of laundry waste include primary treatment, flocculation, filtration and disinfection. Thus present investigation broadly deals with two important aspects of laundry effluent.
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| A Typical Laundry Effluent Treatment Unit |
The treatment of laundry water is currently a subject of great challenge because intense population growth, awareness and Infrastructure improvement is not accompanied accordingly, especially in the field of sanitation. Laundry effluent characteristics play an important role when they are evaluated for the possibility of reuse, including the need for treatment. Public health aspects, especially the presence of xenobiotic organic compounds and heavy metals, must be taken into account. On account of public health, environmental aspect and save water campaign, it is said to treat laundry effluent properly and should be sent for reuse.
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