tailieunhanh - Heavy Metals in the Environment: Using Wetlands for Their Removal - Chapter 12

Hai lựa chọn cho xử lý nước thải mỏ được so sánh với đánh giá tùy chọn đầu tiên là một phương pháp hóa lý thông thường với đông máu và lọc đề xuất bởi một công ty Thụy Điển. Lựa chọn thứ hai sử dụng công suất lọc tự nhiên của các Biala Sông đất ngập nước. | Part IV Value and Policy Based on field and laboratory work on leaded swamps and extensive new literature on heavy metals Part IV evaluates wetlands for heavy metal filtration the state of relevant environmental laws and suggested policies. Chapter 11 by Lowell Pritchard Jr. compares economic and EMERGY evaluation of the Steele City Swamp in Florida. Chapter 12 by Wlodzimierz Wojcik evaluates wetland lead filtration in Poland. Chapter 13 by Jay D. Patel reviews the history of environmental law in the . relevant to lead and wetlands. Finally Chapter 14 summarizes with suggestions for policy on the industrial ecology of lead. 2000 by CRC Press LLC CHAPTER 12 Emergy Evaluation of Treatment Alternatives in Poland Wlodzimierz Wojcik Slawomir Leszczynski and Howard T. Odum CONTENTS Emergy Evaluation of Wetland Wastewater Money Flows for Costs and Flows through Main System Value of Emergy Evaluation of Conventional Comparison of Emergy Flows of Wetland and Technological Two options for treatment of mine wastewater were compared with emergy T alcaatõ n . The first option is a conventional physicochemical method with coagulation and filtration proposed by a Swedish company. The second option utilizes the natural filtration capacity of the Biala River wetland. METHODS Real wealth requirements and contributions of treatment were evaluated tty estimating flows and storages of emergy in inputs and outputs from the treatment systems as explained briefly in Chapter 2 and applied in Chapter 11. Energy systems diagrams were prepared to identify the most important flows Figures and . Then an emergy analysis table was prepared with each of the important items as a line item. Data expressed in energy mass and money units were multiplied by emergy per unit to obtain emergy flow values . Emergy money ratio was obtained from an emergy analysis of Poland .