biological wastewater treatment pdf ppt

Ngày tải lên: 18/02/2014, 04:20

... aquatic treatment units are summarized in Table 2. 737 N NATURAL SYSTEMS FOR WASTEWATER TREATMENT INTRODUCTION In the continual search for a simple, reliable, and inexpen- sive wastewater treatment ... Constructed Wetlands for Wastewater Treatment, Lewis Publishers, Ann Arbor, Michigan, 1989. 10. Water Pollution Control Federation, Natural Systems for Wastewater Treatment, Manual of Practice ... constructed wetlands for wastewater treatment. Mosquito problems may occur when wetland treatment systems are overloaded organically and anaerobic conditions develop. Biological control agents...

Ngày tải lên: 10/08/2014, 20:20

Ngày tải lên: 05/09/2013, 10:15

... with mixed liquor from the Blacksburg, Virginia, municipal wastewater treatment plant in USA and from Stoke Bardolph municipal wastewater treatment plant in Nottingham, UK. After collection, the ... industrial wastewater sludge, especially biological sludge. The good conditioning when calcium ion is added to the system could possibly result from the interaction of polysaccharide from the biological ... Lim, Activated Sludge, in: C. P., Jr. Leslie Grady, Daigger. G. T, H.C. Lim (Ed.), Biological Wastewater Treatment, Marcel Dekker, pp 377-485,(1999). [3]. V. Urbain, J. C. Block, J. Manem,...

Ngày tải lên: 27/06/2014, 13:20

... maintaining water /wastewater flow is at the heart of any treatment process, clearly, it is the measurement of flow that is essential to ensuring the proper operation of a water /wastewater treatment system. Few ... water and wastewater operations. Routine, yes, but also the most important variable measured in a treatment plant. Hauser also pointed out that there are several reasons to measure flow in a treatment ... occupies. The density of an object can be calculated by using the formula: (5.2) In water and wastewater treatment, perhaps the most common measures of density are pounds per cubic foot (lb/ft 3 ...

Ngày tải lên: 11/08/2014, 10:22

... ELECTRICITY Battery-supplied direct current electricity has many applica- tions and is widely used in water and wastewater treatment operations. Applications include providing electrical energy in plant vehicles and ... modern power distribution systems use alternating current AC, including water and waste- water treatment plants. Unlike DC voltage, AC voltage can be stepped up or down by a device called a transformer. ... We think it is important. You probably do, too. We also think it is important for the water or wastewater operator who changes bearings on an electrical motor to have some understanding of how...

Ngày tải lên: 11/08/2014, 10:22

... obtain flow measurements. Any seasoned water and wastewater operator knows that flow measurement is an essential part of water and wastewater treatment. Unit processes are designed for spe- cific ... water application; ww = wastestream application Source: Adapted from Qasim, S.R., Wastewater Treatment Plants: Planning, Design, and Operation , Technomic Publ., Lancaster, PA, 1994, ... Overflow Weir Q gal d Length ft = () () â 2003 by CRC Press LLC 288 Handbook of Water and Wastewater Treatment Plant Operations In another type of measuring device, the problem might be indicative...

Ngày tải lên: 11/08/2014, 10:22

... in Table 10.3. 10.10 WATER AND WASTEWATER CHEMICALS AND CHEMICAL PROCESSES In order to operate a water /wastewater treatment process correctly and safely, water /wastewater operators need to know ... the following: 1. Odor control (wastewater treatment) 2. Disinfection 3. Chemical precipitation 4. Adsorption 5. Coagulation 6. Taste and odor removal (water treatment) 7. Water softening 8. ... 1992, p. 101. 3. Spellman, F.R., Wastewater Biosolids to Compost, Tech- nomic Publ., Lancaster, PA, 1997, p. 211. 4. Metcalf & Eddy, Inc., Wastewater Engineering: Treatment, Disposal, Reuse ,...

Ngày tải lên: 11/08/2014, 10:22

... and rivers include newts, tadpoles, and â 2003 by CRC Press LLC 356 Handbook of Water and Wastewater Treatment Plant Operations food that originates from within the stream is called autochthonous. Most ... Tech- nomic Publ., Lancaster, PA, 1996.) â 2003 by CRC Press LLC 346 Handbook of Water and Wastewater Treatment Plant Operations The overflow, still high in altitude with its rock-strewn bed ... gases necessary for photosynthesis. â 2003 by CRC Press LLC 336 Handbook of Water and Wastewater Treatment Plant Operations poison travels from link to link of the food chain and soon the...

Ngày tải lên: 11/08/2014, 10:22

... Spellman’s Standard Handbook for Wastewater Operators, Vol. 1, Technomic Publ., Lancaster, PA, 1999.) â 2003 by CRC Press LLC 384 Handbook of Water and Wastewater Treatment Plant Operations ... Spellman’s Standard Handbook for Wastewater Operators, Vol. 1, Technomic Publ., Lancaster, PA, 1999.) â 2003 by CRC Press LLC 424 Handbook of Water and Wastewater Treatment Plant Operations lect ... Spellman’s Standard Handbook for Wastewater Operators, Vol. 1, Technomic Publ., Lancaster, PA, 1999.) â 2003 by CRC Press LLC 392 Handbook of Water and Wastewater Treatment Plant Operations ...

Ngày tải lên: 11/08/2014, 10:22

... generally softer (not mineral-laden), which makes its treatment much simpler. â 2003 by CRC Press LLC 442 Handbook of Water and Wastewater Treatment Plant Operations 15.3.4 S URFACE ... should be included in the well log: â 2003 by CRC Press LLC 438 Handbook of Water and Wastewater Treatment Plant Operations Static level the height to which the water will rise in the ... Water Clouds Evapotranspiration (from plants and inland waters) â 2003 by CRC Press LLC 454 Handbook of Water and Wastewater Treatment Plant Operations 1. Well location 2. Who drilled the well 3. When the well was completed 4....

Ngày tải lên: 11/08/2014, 10:22

... F.R., The Handbook for Wastewater Operator Certication, Technomic Publ., Lan- caster, PA, 2001. â 2003 by CRC Press LLC 460 Handbook of Water and Wastewater Treatment Plant Operations ... sulfide content. Lake aeration also reduces cost of capital and operation for water supply treatment. Algicide treatment controls algae, which in turn reduces taste and odor problems. The drawback ... many countries. Often, optimism about the applications of technology (e.g., dam building, wastewater treatment, or irrigation measures) exceeded concerns for, or even interest in, envi- ronmental...

Ngày tải lên: 11/08/2014, 10:22

... LLC 332 Mathematics for Water /Wastewater Treatment Plant Operators food is cooked at the correct temperature. Unlike this cook, in water /wastewater treatment plant operations the operator ... Solids ã Wastewater Suspended Solids and Volatile Suspended Solids ã Biosolids Volume Index (BVI) and Biosolids Density Index (BDI) WATER /WASTEWATER LAB Ideally, waterworks and wastewater treatment ... Mathematics for Water /Wastewater Treatment Plant Operators WASTEWATER SUSPENDED SOLIDS AND VOLATILE SUSPENDED SOLIDS Total suspended solids (TSS) are the amount of filterable solids in a wastewater sample....

Ngày tải lên: 11/08/2014, 13:22

Ngày tải lên: 11/08/2014, 17:20

Ngày tải lên: 11/08/2014, 17:20

Ngày tải lên: 11/08/2014, 17:20

Ngày tải lên: 05/09/2013, 08:40

Ngày tải lên: 05/09/2013, 09:08

Ngày tải lên: 05/09/2013, 10:15

Ngày tải lên: 05/09/2013, 10:15