Download Chemical Water and Wastewater Treatment III: Proceedings of by James K. Edzwald, Donald Q. Bunker, Jan Dahlquist, Lars PDF

By James K. Edzwald, Donald Q. Bunker, Jan Dahlquist, Lars Gillberg, Torsten Hedberg (auth.), Prof. Dr. Rudolf Klute, Prof. Dr. Hermann H. Hahn (eds.)

ISBN-10: 3642791107

ISBN-13: 9783642791109

ISBN-10: 3642791123

ISBN-13: 9783642791123

Exactly ten years in the past an test was once began that proved to be tremendous profitable: the 1st Gothenburg Symposium. Its cause was once to additional the below­ status of all methods relating Chemical Water and Wastewater remedy, and to collect experts operating in simple examine in addition to in devel­ opment and management. Now, the complaints of the 6th Symposium are approximately to be released, truly proving that there's a desire for this discussion board. They dramatically illustrate the importance and the dynamic improvement of the themes of those symposia. it's attention-grabbing to witness that during this time of lowered fiscal progress or maybe standstill, the environmental force has now not come to a halt, as many expected or feared. it truly is permitted increasingly more that the security of our surroundings, a continuing topic in the entire Gothenburg Symposia, isn't just an issue to be handled in instances of affluence; it's now additionally noticeable as an tool for slicing ex­ penditure, saving strength, and husbanding assets. The ever becoming curiosity in those Gothenburg Symposia, documented by means of the massive variety of contributions the medical panel acquired and the massive call for for the books of this sequence that usually exceeds the provision, testify to this commitment.

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Additional info for Chemical Water and Wastewater Treatment III: Proceedings of the 6th Gothenburg Symposium 1994 June 20 – 22, 1994 Gothenburg, Sweden

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1980) reported the turbidity reducing effects of polyaluminium chlorides of different basicities on bentonite suspensions. At each municipal wastewater plant the coagulant is added in such an amount that the requirements of the authorities are fulfilled. These requirements may stipulate that the cleaned water shall have a maximum phosphorus or COD content. R. H. ) Chemical Water and Wastewater Treatment III © Springer-Verlag Berlin Heidelberg 1994 40 L. Gillberg The aim of this paper is to examine more fully the influence of aluminium sulphate and polyaluminium chlorides of different basicities when cleaning municipal wastewaters of two thicknesses to a constant turbidity or phosphorus concentration.

We also extend our appreciation to James Vickers, formerly of Memtec America Inc. Mark R. O. Gillberg Abstract The influence of different doses of aluminium sulphate and polyaluminium chlorides when cleaning a thin and a thick sewage on the residual turbidity, concentrations of TOC, ortho-P, non-ortho-P, SS, and alkalinity and sludge volume produced was studied. Both the alkalinity consumed and the amount of ortho-phosphate precipitated decreased with increasing basicity of the coagulant. At low coagulant doses no or little alkalinity was consumed.

No attempt was made to optimize coagulant addition for either phosphorus removal or permeate flow. Rather, a dose of 10 mgll as aluminium was added based on settleability observed in simple jar tests. More extensive runs, designed to evaluate the effect of chemical pretreatment of permeate flux, are in progress. 10' membrane membrane wl coagulant WWTP fihrale c.. (II "0 10° .... c .... :::) 10 - 2 turb idity (NTU) lotal P (mgIL) Fig. 7. Comparison of turbidity and total P in the membrane permeates with and without coagulation pretreatment with the wastewater treatment plant (WWTP) filtrate.

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Chemical Water and Wastewater Treatment III: Proceedings of the 6th Gothenburg Symposium 1994 June 20 – 22, 1994 Gothenburg, Sweden by James K. Edzwald, Donald Q. Bunker, Jan Dahlquist, Lars Gillberg, Torsten Hedberg (auth.), Prof. Dr. Rudolf Klute, Prof. Dr. Hermann H. Hahn (eds.)


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