Podczyszczanie odcieków ze składowiska odpadów stałych metodą koagulacji

• Autorzy: Leszczyński J.

Warianty tytułu

EN

Pretreatment of stabilized landfill leachate using coagulation-flocculation

• Języki publikacji: PL

Abstrakty

PL

Badano skuteczność podczyszczania odcieków pochodzących z ustabilizowanego składowiska odpadów stałych metodą koagulacji. Odcieki przeznaczone do badań technologicznych charakteryzowały się wartością pH 8,24, niewielką mętnością 45 NTU, wysoką barwą 5150 mgPt/dm3, stężeniem ChZT 2205 mgO2/dm3 i BZT5 310 mgO2/dm3. Koagulację prowadzono z wykorzystaniem polichlorku glinu, chlorku żelaza(III), oraz wapna w postaci 5% roztworu CaO. Wymagana dawka wapna, niezbędna do uzyskania pH 11,5 wynosiła 750 mg/dm3. Spośród wybranych koagulantów najwyższą efektywność w odniesieniu do ChZT 54 % oraz barwy 75% uzyskano stosując polichlorek glinu w dawce 390 mgAl3+/dm3. Wysoki efekt usunięcia ChZT i barwy uzyskano również w procesie koagulacji wapnem.

EN

The objective of the research was to study coagulation-flocculation pretreatment a stabilized landfill leachate. The average characteristics of samples were: pH 8,24, NTU 45, color 5150 mgPt/dm3, COD 2205 mgO2/dm3, BOD 310 mgO2/dm3. The coagulation of landfill leachate samples was accomplished by addition of different coagulants including poly-aluminum chloride, ferric chloride and lime in various dose. Lime coagulation process the results show that the pH of leachate can be adjusted to 11,5, after putting in 750 mgCaO /dm3. Results of these tests showed that among uses coagulants the best for treatment of the leachate is poly-aluminum chloride. Maximum COD and color removal rates for 54% and 75% had been achieved by addition of 390 mg/m3 of poly-aluminum chloride as Al3+ respectively. Therefore coagulation-flocculation is not sufficient for treatment of this leachate and for further treatment some other methods such as chemical oxidation, GAC adsorption and membrane filtration should be applied.

Słowa kluczowe

PL

odcieki składowiskowe; koagulacja; koagulacja wapnem

EN

landfill leachate; coagulation-flocculation; lime coagulation process

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej
• Czasopismo: Inżynieria Ekologiczna
• Rocznik: 2011
• Tom: Nr 25
• Strony: 242--250
• Opis fizyczny: Bibliogr. 23 poz.

Twórcy

autor

Leszczyński J.

• Politechnika Białostocka, Katedra Technologii w Inżynierii i Ochronie Środowiska

Bibliografia

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