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Treatment with chemical flocculation of Landfill Leachate


Project in June 2000 Volume 8, No. 2 water treatment (including the regulation of water, anaerobic water, aeration ponds) were to compile a pilot program to explore the best treatment process. 2.2.1 regulation pond water for the leachate COD = 3O00 ~ 5000rrL. Orthogonal table (34) Group 6 Test preparation programs. Under optimal conditions in each group. COD of the water quality and quantity of coagulant dosing c relationship. Decline a coagulant screening results 830PfsAPM accompany a non-65578769511002PACAPM a 10987.0645846712003 Note: PFS a PFS. A PAC PAC APM polyacrylamide table is a pilot program in the orthogonal group of the best values of the test results from the point of view, COD removal rate is only about l0% (whether this is the nature of leachate and coagulation the nature of agents, have yet to be confirmed by further studies); color removal rate was 50%; total phosphorus removal efficiency is better. Up to 90%. However,[link widoczny dla zalogowanych], due to the decomposition of microbial fermentation, sediment floc to float only a few minutes to ten minutes. This process does not match with our requirements,[link widoczny dla zalogowanych], combined with its organic removal rate is too low, thus abandoned to adjust the pool water with a coagulant. 2.2.2 Anaerobic pond effluent leachate cODcr the 800-1800m # L. Orthogonal table (3) Preparation of 6 groups of pilot programs. According to the best in each situation and study water and coagulant dosing COD correlation between the amount of C. C = O. 8397coDcr +324.43. Table 2. The results from the orthogonal analysis (see Figure 1), for the anaerobic pond effluent, the impact of the main factors flocculation pH. Followed by the mixing time, COD removal rate of 4O% ~ 60%. 2.2.3 cO aerated pond effluent leachate is 100 ~ 600mg / L. With the orthogonal k (3) preparation of pilot programs in 9 groups, according to the best in each situation (see Table 3), c the amount of coagulant dosing and water quality of the relationship between COD, C = 0.7934CODc +398. 88. Bad 2 wooden Bodhisattva love sac larvae pond best case analysis of test results from the orthogonal (see Figure 2), for purposes of the aeration pond effluent. The main factors affect the flocculation effect is pH. Followed by the amount of coagulant dosing, COD removal rate was 50% to 70%. Decline of 3 sugar water aeration best case Bodhisattva Group 3 Summary 3.1 PFS as a coagulant for the treatment of landfill. The best results. 3.2 Different water test results, the aeration pond effluent by chemical flocculation treatment, COD removal rate of an average of 65%; anaerobic pond effluent by chemical flocculation treatment, COD removal averaged only pH7.5 �� A C �� 890mg / L, pH75, ~. - COD1560mg / L. pH73 hi friends 60 402 transcripts. }---_}_-- T (mia),[link widoczny dla zalogowanych], tired of orthogonal analysis of chlorine pool water port of a c0D1040mg / L. pH7.5 �� a c0D8300mg / L. pH74 �� A c0D1440mg / L, pH7.5PI ~ (ms / I.) of raw water: 0 A c0440mg / L. pH7.8 �� a c �� 360mg / L. pH8.0, ~. - COD = 720mg / L. pH76 mouth of a C0D480mg / L,[link widoczny dla zalogowanych], pH78 �� a C0D760mg / L, pH7.9 Figure 2 Orthogonal analysis Nang air pond water 46%, while the color and total phosphorus removal was positively correlated with the COD removal rate. Therefore, coagulation treatment facilities should be located at the water in the aeration pond. 33 sets of orthogonal test to the best parameters of leachate COD and investment relationship between the assigned amount. Determine the COD, the amount of coagulant with a return to the agenda of the production operation of practical significance. Although the pH value of 3.4 is an important condition of chemical flocculation �� 678 ships a C �� 510me, / L, pH7.8 �� a C0D270mg / L, pH8.0 �� a c0D320mg / L,[link widoczny dla zalogowanych], pH7.9 + a C0230mg / L. pH8. L a, but the regulation of pH value should be advantageous for the production operation and management. Therefore, we analyzed the various factors of the best indicators. PH value control wells to produce water near pH. 3.5 For the aerated pond water. APM coagulant can be added or not added, and for the anaerobic pond effluent. PFS coagulant to be added, together with coagulant APM better.
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