Investigation of cement dust form Iraqi factories

العناوين الأخرى

تقصي غبار السمنت من المصانع العراقية

مقدم أطروحة جامعية

al-Shadid, Sabah Ubayd Hamad

الجامعة

الجامعة التكنولوجية

الكلية

-

القسم الأكاديمي

قسم هندسة البناء و الإنشاءات

دولة الجامعة

العراق

الدرجة العلمية

دكتوراه

تاريخ الدرجة العلمية

2009

الملخص الإنجليزي

Hundreds of thousands of tons of cement kiln dust (CKD) as well as other emissions are generated annually from existing cement plants in Iraq.

Most plants dispose of CKD near or around the plants site as uncovered mounds and piles with significant economic and environmental impacts, A survey was conducted and carried out as data collection sheets covering all cement plants to serve a base line data source.

Data were received from cement plants in response to this survey were not enough, therefore it was supplemented and integrated by sampling and measurement activities.

The main parts of data collection efforts were directed to locate source of, determine the quantities and characteristics of, assess the current activities to manage CKD, In addition, an evaluation of the environmental regulation framework which governs cement industry is carried out, Throughout this study, the following were investigated and identified : - Causes of excessive consumption of raw materials and fuel which affect the CKD generation and characteristics as well as other pollutants, • Alternatives to CKD management especially beneficial uses.

- Environmental and other aspects of cement industry.

- Environmental requirements and short-term and long-term solutions.

Analysis of data collected has shown that the production capacity was significantly decreased to about 38 % on the average of the designed capacity.

The consumption of raw materials and fuel per unit production was increased by about 13 : % and 23 %, respectively.

The amount of generated CKD is found to be variable |.

among different cement plants.

It can be estimated that the generated CKD on the average is about (8-33) % of ihe production output depending on the conditions of each plant, Experimental laboratory work on one of the beneficial uses of CKD was carried out in tills study, CKD was mixed with sewage sludge as dry alkaline stabilizing agent.

Sludge treated with CKD was found to meet the class A requirements (fecal coliform density leas than 10C0 MPN/g solid) as set by USEPA, In this study, the fecal coliform density of thickened sludge treated with 20 % CKD was reduced from 2.43* 10s MPN / g to 410 MPN / g, while ; for dewatered sludge treated with 30 % CKD, it was reduced from 8.75 *107 MPN / g to 220 MPN / g.

CKD was successfully applied to destroy pathogens, reduce vector attraction and bring the sludge to a manageable form.

This study represents a first attempt to pi nee a framework of environmental management system for cement plants.

This study proposes environmental mitigation plan to address the environmental and social challenges to improve the environmental performance of Iraqi cement industry sector.

التخصصات الرئيسية

علوم الأرض و المياه و البيئة

الموضوعات

• الصناعات
• السياسة البيئية
• الأسمنت
• العراق
• الجوانب البيئية
• الغبار

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-304951