scholarly journals EFFICIENCY RESEARCH ON MEAT INDUSTRY WASTE WATER TREATMENT APPLYING THE METHOD OF DISSOLVED AIR FLOTATION / MĖSOS PRAMONĖS NUOTEKŲ VALYMO FLOTACINIU METODU EFEKTYVUMO TYRIMAS

2012 ◽  
Vol 3 (6) ◽  
pp. 5-7
Author(s):  
Valentinas Gerasimovas ◽  
Robertas Urbanavičius
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Industrial Pollution ◽  
Waste Water Treatment ◽  
Meat Industry ◽  
Saturated Liquid ◽  
Dissolved Air Flotation ◽  
Optimal Ratio ◽  
Industry Waste ◽  
Dissolved Air

To protect environment from industrial pollution, strict requirements for waste water treatment are imposed. The purpose of research is to establish an optimal ratio of saturated liquid and meat industry waste water. Research included JCC “Traidenis” waste water treatment system installed in JSC “BHJ Baltic”. Investigations into treated waste water indicated that an optimal ratio of waste water and saturated liquid was 2/1 under duration time of 8 minutes. Efficient waste water treatment made 86% and the ratio of waste water and saturated liquid was 2/1. Santrauka Siekiant apsaugoti gamtą nuo pramoninės taršos, nuotekų valymui keliami vis didesni reikalavimai. Darbo tikslas – nustatyti optimalų skysčio ir oro emulsijos ir mėsos pramonės nuotekų santykį. Nuo skysčio ir oro emulsijos ir nuotekų santykio priklauso nuotekų valymo įrenginių kaina ir eksploatacijos išlaidos. Jei bus pasirinktas netinkamas santykis, nuotekų valymo įrenginiams reikės daugiau priežiūros, o tam prireiks papildomų išlaidų. Tyrimams atlikti pasirinkta UAB „Traidenis“ flotacinė nuotekų valymo sistema, sumontuota UAB „BHJ Baltic“ antrinių žaliavų perdirbimo įmonėje. Atlikus tyrimus nustatyta, kad optimalus skysčio ir oro emulsijos ir nuotekų santykis buvo 2:1. Esant tokioms sąlygoms, pasiektas 86 % valymo efektyvumas.

Anaerobic Waste Water Treatment in a Carrier Assisted Sludge Bed Reactor

1983 ◽  
Vol 15 (8-9) ◽  
pp. 233-246 ◽  
Author(s):  
L Martensson ◽  
B Frostell
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Sugar Industry ◽  
Tap Water ◽  
Waste Water Treatment ◽  
Organic Load ◽  
Industry Waste ◽  
Solids Concentration ◽  
The Difference ◽  
Mechanical Mixer

A 40 1 tank reactor, filled to 3 % (v·v−1) with a small size (5-25µm) carrier material and equipped with a mechanical mixer, was used to create a sludge bed system for anaerobic waste water treatment. Solids leaving the tank with the effluent were recycled to the tank from an external settler. Two different substrates were used, fodder molasses diluted with tap water and beet sugar factory waste water. Influent concentrations were 9.3 g COD·1−1 and 4-7 g COD·1−1 respectively, and treatment was performed at 35-37 °C. With the synthetic molasses waste water, an organic load of 5-6 kg COD·m−3·d−1 could be tolerated, with the sugar industry waste water 25 kg COD·m−3·d−1. The difference in loading capacity was ascribed to different types of sludges formed, the molasses waste water resulting in a much more bulky sludge and a lower attainable volatile suspended solids concentration. It was concluded that much care must be exercised before designing sludge bed systems for high loads with unhydrolyzed waste waters.

Performances of nanofi ltration and reverse osmosis in textile industry waste water treatment

2010 ◽  
Vol 22 (1-3) ◽  
pp. 182-186 ◽  
Author(s):  
Emna Ellouze ◽  
Sami Souissi ◽  
Amel Jrad ◽  
Raja Ben Amar ◽  
Abdelhamid Ben Salah
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Reverse Osmosis ◽  
Textile Industry ◽  
Waste Water Treatment ◽  
Industry Waste

Urban wastewater treatment by electrocoagulation and flotation

1995 ◽  
Vol 31 (3-4) ◽  
pp. 275-283 ◽  
Author(s):  
M.-F. Pouet ◽  
A. Grasmick
Keyword(s):  
Waste Water ◽  
Chemical Process ◽  
Waste Water Treatment ◽  
Pollution Abatement ◽  
Dissolved Air Flotation ◽  
Physico Chemical ◽  
Pollution Removal ◽  
Urban Wastewater Treatment ◽  
Dissolved Air

In waste water treatment, the use of a physico-chemical process by flotation would present some advantages compared to a separation by settling. However like each physico-chemical process, a separation by flotation needs a chemical destabilization. We have studied the use of an electrochemical destabilization coupled to a process of flotation (DAF). This paper presents the results obtained on an urban waste water treated by electrocoagulation and dissolved air flotation (DAF). To show the interest of coupling flotation and electrocoagulation, we have studied each process separately. Then we have combined the two processes. The role of each operation on pollution removal is presented. An effect of synergism between the two processes on the pollution abatement is shown. A reduction of 75% of the global COD is obtained. The results of the coupling are compared to the performance of an intensive treatment by flocculation-lamellar settler.

Potential of Strychnos Potatorum and Eirchorrnia Crassipes in Treating Dyeing Industry Waste

2021 ◽  
Vol 9 (VI) ◽  
pp. 2454-2459
Author(s):  
P. Sivaraman
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Water Hyacinth ◽  
Waste Water Treatment ◽  
Oxygen Demand ◽  
Industry Waste ◽  
Before And After ◽  
Natural Coagulants ◽  
Strychnos Potatorum ◽  
The Cost

The research aim is to the treatment of industrial dyeing waste water for the analysis of improved water treatment using natural coagulants. For waste water treatment, natural coagulants such as Strychnos potatorum (nirmali seeds) and Eirchorrnia crassipes (water hyacinth) are used. We have test the various properties of dyeing waste water before and after treatment like pH, sulphates, chlorides, total solids, total suspended solids (TSS), total dissolved solids (TDS), acidity, alkalinity, optimum coagulant dosage (jar apparatus), biological oxygen demand (BOD) and chemical oxygen demand (COD) .The test results showed that natural coagulants produce better results when used alone or in conjunction with the chemical coagulant alum. Since the natural coagulant generates less floc, the cost of sludge treatment is reduced. Water hyacinth outperforms nirmali seed in terms of natural coagulants. Natural coagulants may be used to manage and treat the dyeing waste water, anywhere there is an abundance of it.

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