...Coagulation and Flocculation Conventional Coagulation/Flocculation Process Pretreatment Chemical Feed Flash Mixing Coagulation & Flocculation Sedimentation Filtration Disinfection Pretreatment Screen with Cable Raking Mechanism Pretreatment Considerations Used prior to Coagulation Addition of oxidizing agents, GAC and polymers Used as far as possible upstream to maximize contact time Purpose of Coagulation and Flocculation Remove particulate impurities, especially non-settleable solids, and color from the water being treated. Non-Settleable solids include colloidal material that exhibits slightly negative charges repelling one another and staying in suspension. These contain microbes including pathogens Pretreatment Considerations in the Coagulation/Flocculation Process Factors that May Dictate Pretreatment – Leaves, plant material and silt – Seasonal raw water quality changes caused by drought, high water or temperature changes – Potential upstream pollution – Wind conditions – Algae blooms – Bacterial problems Removal of Turbidity by Coagulation & Production of Floc Particle Removal by Coagulation: Neutralization of repulsive charges Precipitation with sticky flocs Bridging of suspended matter Providing “agglomeration sites” for larger floc Weighting down of floc particles Factors Affecting the Coagulation Process pH (pH Range: Al, 5 – 7.5 ; Fe, 5 – 8.5); Alkalinity of water (> 30 PPM residual) Concentration of Salts (affect efficiency) Turbidity...
Words: 1339 - Pages: 6
...the importance of safety with materials and taking turns. They will also have the experience of joy that comes from creating unique products (West, 2006). Materials non-toxic Glue brushes Scissors Rulers Stencils Tape Hole Punchers Stapler Paper Play Dough Rolling Pins Cookie Cutters Markers Pencils Crayons non-toxic Paints Smocks Easels Drying Rack First, I would read a book during circle time about colors and what happens when you mix them, the activity will be color mixing. I think a good book that depicts this is” Mouse Paint “by Ellen Stoll Wash. The book is about three little white mice that discover jars of red, blue, and yellow paint. It tells the story of what happens when these mice dip into one color...
Words: 999 - Pages: 4
...cylinder that resembled contemporary sticks. The first such crayons are purported to have consisted of a mixture of charcoal and oil. Later, powdered pigments of various hues replaced the charcoal. It was subsequently discovered that substituting wax for the oil in the mixture made the resulting sticks sturdier and easier to handle. While these discoveries were being made in Europe, the foundation was being laid in the United States for a company that would turn the crayon into its best-known product; one that would reach the households of generations of children throughout the world. In 1864, Joseph W. Binney founded the Peekskill Chemical Company in Peekskill, N.Y. This company was responsible for products in the black and red color range, such as lampblack, charcoal and a paint containing red iron oxide which was often used to coat the barns dotting America’s rural landscape. Peekskill Chemical was also instrumental in changing the look of America’s highways. The first automobile tires were...
Words: 1408 - Pages: 6
...Borrowing from Native American culture, for example, would be not such an issue if they were respected for their individual identity instead of the material aspects of their culture. Some, like Alyssa Rosenberg of The Washington Post, believe that designers who only search for potential looks deserve criticism and should search for a deeper meaning behind the fashions. Simple accusations of cultural appropriation stop further questions about its causes and the effects that it has on the cultures in question (Rosenberg). Rosenberg believes it is better to delve deeper into the reasons why designers find these cultures so intriguing and captivating instead of simply blaming. Older generations tend to view the mixing of cultures as normal while...
Words: 1527 - Pages: 7
...What are the common problems of DALMILL PLANT? First, spiral agitator malfunction: 1) The axle of the agitator does not turn caused by too much feeding or the driving belt slipping. 2) There has no grain discharging at the discharging port caused by the wrong motor diversion, port blocking or mixing arm breakage. Second, motor malfunction: The whole machine has more than ten sets of motors. Motor malfunction cannot be ignored. Too high temperature is one of the main reason of motor damage. All of the following factors may cause too high temperature: fuel starvation of the bearing, dirt mixing in the bearing, bearing damage or motor overload. Third, air lock valve malfunction: The common reasons that cause air lock valve malfunction: the air leak at the joint part, impeller wear, and so on. If it is caused by the impeller wear, we can add a rubber board at the outer edge. Fourth, we should install the separate power switch which is accordant with the rated power, with reliable ground lead. The single dal mill plant should install stable power supply according to the inst ruction book requirement. We should make sure that each device and operation table-board are flat and fixed. Each corn processing equipment should be checked and maintained in time. Besides, dal mill plant cleaning work is necessary. And we should put it in the dry and clean place when we don’t use it. Dal mill plant refers to the whole dal or pulses processing line, which includes dal...
Words: 434 - Pages: 2
...proper knowledge of the level system, color theory, and the levels of decolorization, the client may not get their desired result; that can ultimately cause a loss of profit, and even clientele. If the stylist has a full understanding of all of the factors, there is a lot of money to be made. Both men and women are changing the color of their hair, and with the help of a stylist, they can achieve whatever look they desire. Stylists utilize what is called the level system, which is a system that is used to determine the lightness to darkness of a client’s hair. This helps decide whether the haircolor needs to have lift or will be deposit only. Color theory is used to determine they actual color of the clients hair. This is determined by use of the color wheel and the three primary colors; red, blue, and yellow. These are colors that cannot be created by mixing other colors, but with equal part of two of these colors you can create secondary colors. Tertiary colors are colors that can be made when a secondary color and its neighboring primary color are mixed. With knowledge of this, a stylist can change the client’s hair any color of the rainbow. The degree of decolorization comes into play when the client’s hair needs to be lightened to the extreme. If a client is a level 5 which is the lightest brown, and they want to become a level 8, they have to decolorize the hair. Even the most simple haircolor change require some sort of knowledge of color theory, the level system and the decolorization...
Words: 4694 - Pages: 19
...I ask open-ended questions during reading, math and science daily to promote critical thinking skills. By providing student's with an emergent curriculum as well as field trips I am supporting their advancement. I incorporate the use of puzzles, manipulatives, books and scales to encourage children to explore,analyze and problem-solve.When I take my students on nature walks I am assisting the exploration process with the use of magnifying glasses and by encouraging students to observe and ask questions. CS II a. The "Jump the River" activity promotes physical development because it involves the use of large muscles which encourages gross motor skill development. Children are required to jump over an imaginary river with the use of a rolled towel on the ground that will get wider with each turn. These movements enhance control and coordination when using locomotor skills. CS II b. I used the "Rice and Ice" activity because I believe it promotes cognitive development by exploring scientific concepts and learning primary color mixing. Children observe the process of colors mixing when ice dyed with food coloring melts onto rice. This activitty supports a child's natural...
Words: 482 - Pages: 2
...art for the color of the artists. He didn't mind being judged by looks, when people talked about his personality and despicable awful color for skin he didn't mind. When people criticize his art only by the color of his skin he gets indignant because no one is avow to have the power to criticize people. Jean wanted people to see how it's not a sin to blend different cultures together. Jean Michel Basquiat was an important figure in Black History because he proved to people who judge him his...
Words: 1484 - Pages: 6
...A number of things affect the soap-making process and the quality of this soap produced. The characteristics of this soap depend on the quality of oil, and the amounts of the caustic soda and water used to make it. The speed of the reaction between the oil and the caustic soda is influenced by free fatty acid content of the oil, the heat of the components before mixing, and how vigorously the mixing is to be done. Free fatty acid contents, vigorous mixing, and heat, speed up the given soap-making process. The Food, Drugs and Cosmetics (FD&C) Act defines cosmetics by their intended use, as "articles intended to be rubbed, poured, sprinkled, or sprayed on, introduced into, or otherwise applied to the human body...for cleansing, beautifying, promoting attractiveness, or...
Words: 713 - Pages: 3
...Genetics” Gyatso focuses on the benefits of genetic engineering and its enormous potential, while warning us of its harmful consequences. In contrast, but yet pursuing the same point, Steve Olson in his book “Mapping Human History” (2002) and the chapter “The End of Race: Hawaii and the Mixing of Peoples” traces the differences and similarities between people of various races and ethnicity. He uses the frequencies of genetic mutations in the mitochondria, migration from one continent to another and racially mixed populations where the target is the mostly American state of Hawaii. Should the world be concerned about the end of singular genetic ethnicity of each race? And is it going to happen? Race most likely will disappear as we now know. It seems to have been defined as two general groups-white and black, distinct from one another by only color of complexion. The white race will not be truly white, the black race will not be truly black, and the brown, yellow and red races will not be truly genetically ethnic either. What does race actually mean? According to Longman Dictionary of Contemporary English, the definition of race is “one of the main groups that humans can be divided into according to the color of their skin and other physical features”. This is equal to ethnic grouping. And this very same definition it is noticeable that already not the main groups are disappearing. For instance, the Dalai Lama writes about how the...
Words: 1351 - Pages: 6
...I. Introduction: Food adulteration is a growing problem in Bangladesh as large numbers of consumers have become victims of consuming adulterated foods. This problem is becoming acute day by day. It is becoming essential to find out the reasons of food adulteration and how to solve this problem. Food and Agriculture Organization (FAO) has estimated that 45 million people in Bangladesh suffer from food poisoning or some kind of food-borne diseases round the year. Adulteration of food with toxic chemicals harmful to health has reached an epidemic proportion in Bangladesh. The newspapers have out and out conferred it, as the ‘silent killer’. It is now very difficult to find a sector of food industry which is free of adulteration. Experts believe that 76% of foods of our country are adulterated. Alarming increase of adulteration of food commodities create a strong public opinion for combating the ferocity of the offence. The study first identifies what is food adulteration and types of food adulteration. Secondly, the study aims to provide some suggestion for removing this problem. II. What is food Adulteration? Food Adulteration is the act of adding or mixing something harmful, useless and unnecessary substance to food. In other words, any food item may be considered as adulterated if its nature and quality are not up to the standard. As a result of adulteration, food or drink becomes impure and unfit for human consumption. Unscrupulous traders normally adulterate food....
Words: 1758 - Pages: 8
...characteristic taste of a leche flan. Therefore, the pure egg yolk is more appropriate to use than the whole egg in the preparation of a palatable Leche flan. INTRODUCTION Eggs, packed with every nutrient and other factors necessary for man, are the most commonly eaten and widely used poultry product brought by nature. They are considered as nutrient-dense foods because they supply all the essential amino acids and provide several vitamins and minerals such as retinol, folic acid riboflavin, and other B-complex vitamins for humans. Additionally, the eggs are one of the few foods to naturally contain Vitamin D (Del Rosario, 2009). They play an important role in maintaining psychological functions and memory enhancement, and in preventing birth problems and cardiovascular diseases in...
Words: 1876 - Pages: 8
...Republic of the Philippines Mariano Marcos State University COLLEGE OF TEACHER EDUCATION Laoag City THE UTILIZATION OF TIYESA (Pouteria lucuma) AS MAIN INGREDIENT IN PANCAKES PRECIOUS BALGUNA JEROME PIO CHRISTOPHER TAMBOGON JEAIA ARIGUIN APPLE VILLACENTINO RODELYN COLOMA LEO MARK ULEP Researchers DR. EVA MACUGAY Research Adviser ABSTRACT Title: THE UTILIZATION OF TIYESA (Pouteria lucuma) AS MAIN INGREDIENT IN PANCAKES Researchers: PRECIOUS BALGUNA, JEROME PIO,CHRISTOPHER TAMBOGON, JEAIA ARIGUIN, APPLE VILLACENTINO, RODELYN COLOMA, LEO MARK ULEP Research Adviser: Dr. Eva Macugay University: Mariano Marcos State University - College Of Teacher Education Brgy. 5, Castro Avenue, Laoag City This study was designed to determine the feasibility of tiyesa (Pouteria lucuma) fruit as pancake ingredient. The data on the organoleptic tests like appearance, texture and taste were used. The acceptability test used 5 Points Hedonic scale with corresponding numerical score (Highly acceptable, very acceptable, acceptable, not so acceptable, not acceptable). Thirty (30) respondents were randomly selected at Brgy.10, San Jose and Brgy. 9, Sta. Angela, Laoag City. Results were statistically treated using mean average scores. The formulation made of 25% tiyesa (Pouteria lucuma) + 75% flour was recommended for making pancakes. The product was rated the most preferred in terms of taste, appearance and acceptability. It was recommended that further improvement...
Words: 2975 - Pages: 12
...if they crack, it’s okay if they’re hollow. Each time one of those things happen, you have a chance to learn about what went wrong with your technique if you want to learn. If you don’t care about learning, focus on flavor, have fun making a tasty cookie and leave obsessive perfectionism to the professionals. If this is your first time making macarons, read through these posts to familiarize yourself with some common problems and mistakes. Macaron Mythbusters: 10 myths you don’t need to worry about (with my recipe anyway). Macaron Ten Commandments: 10 important points to remember when macaroning All About Hollows: pointers for honing your macaron technique and minimizing hollow shells Macarons Are For Eating: macarons are crazy delicious; don’t forget that in pursuit of perfection! I get a lot of macaron emails each week and most of them are about a question already answered in one of those posts. Essentially everything I know about macarons is here, so please check out those posts before emailing. If I haven’t covered your question or problem, snap a pic of your tray of macarons and upload it to the Facebook page so I can help you troubleshoot (seeing them still on the...
Words: 1897 - Pages: 8
...Sound Mixing Boards for Theatre Over the years, theatrical technology has progressed immensely. One of these advancements includes the mixing console. A mixing console is an electronic device that is used for combining, routing, changing the level, timbre and/or dynamics of audio signals. Depending on the type of mixer, a mixer can mix either analog or digital sounds. The altered signals are then summed together in order to produce the collective output signals. In 1958, the Willi Studer Company of Switzerland manufactured one of the earliest mixing consoles. This device, called the “Studer 69,” used reel-to-reel tape and was portable. While this particular console was portable, these early devices were still bulky. As technology advanced, mixing consoles became lighter and more compact, which allowed for the inclusion of more features and capabilities. (Coe, 2009) Research by Coe (2009) demonstrates that mixing consoles started out in the 1950s as purely analog, devices with only one or two channels. As more purposes for mixing consoles appeared, more options began to develop. Transformations in electronics supplied the digital technology needed for these new functions. While digital mixing consoles have more features, many users still prefer analog mixers due to their ease of use. Hybrid mixing consoles, combining both digital and analog inputs into one piece of hardware, retain the advantages of the old while also integrating the features of the new. Traditional analog...
Words: 2003 - Pages: 9