The document discusses various processes involved in water treatment, including coagulation, flocculation, and filtration. It provides details on each major step:
- Coagulation involves adding chemicals like aluminum sulfate to destabilize particles in water and allow them to agglomerate. Flocculation then forms these particles into larger flocs to facilitate their removal.
- Filtration passes water through filter media like sand to remove remaining particles and microorganisms. Slow sand filters have a biological layer that assists with removal, while rapid sand filters use physical filtration at higher flow rates.
- Other key processes discussed include sedimentation to remove settled particles, aeration to improve odor and taste, and disinfection to kill
Sedimentation is an effective techniques involved for treatment of waste water . Various sedimentation techniques are employed world wide for the purpose.
Plain sedimentation is the simplest technique involving quiescent settling or storage of water, such as would take place in a reservoir, lake, or basin, without the aid of chemicals, preferably for a month or longer, particularly if the source water is a sewage-polluted river water.
This presentation covers various plain sedimentation tanks & design considerations of the same .
If you like it ,Please press the thumb up button & donot forget to give your feedback in comments section, it would be extremely valuable . Any query ? Feel free to post in comments section. All the best ! Enjoy !
Sedimentation is an effective techniques involved for treatment of waste water . Various sedimentation techniques are employed world wide for the purpose.
Plain sedimentation is the simplest technique involving quiescent settling or storage of water, such as would take place in a reservoir, lake, or basin, without the aid of chemicals, preferably for a month or longer, particularly if the source water is a sewage-polluted river water.
This presentation covers various plain sedimentation tanks & design considerations of the same .
If you like it ,Please press the thumb up button & donot forget to give your feedback in comments section, it would be extremely valuable . Any query ? Feel free to post in comments section. All the best ! Enjoy !
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
Deals with primary sedimentation tanks for the primary treatment of sewage. settling column test, settling profile graph construction and use of the settling profile graph for the design of primary sedimentation tank. both circular and rectangular settling tanks are described here.
WATER & WASTE WATER ENGINEERING - water treatment process & unitsEddy Ankit Gangani
This presentation is made with a view to introduce various units & processes carried out in water treatment plant with various trains or say chains of units to meet Indian Standard criteria.
This presentation envisages on theory Of Filtration, Types of Filters, Slow Sand, Rapid Sand and Pressure Filters Including Construction, Operation, Cleaning, Operational Problems In Filters, Design criteria of Slow & Rapid Sand Filter Without Under Drainage System.
Sludge dewatering is a prior process to manage the sludge. The dewatering requires to decrease the volume of sludge for easy handling. It has two methods: Conventional and advance.
this presentation gives you a quick glimpse of Sludge Dewatering process and method.
Lecture note of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
Lecture note of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
This presentation is about both conventional and advanced treatment of water. TSS and turbidity removal and disinfection by conventional treatment. TDS removal and removal of ionic and non-ionic contaminants by ion exchange, adsorption, and membrane processes is included as the advanced treatment processes.
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
Deals with primary sedimentation tanks for the primary treatment of sewage. settling column test, settling profile graph construction and use of the settling profile graph for the design of primary sedimentation tank. both circular and rectangular settling tanks are described here.
WATER & WASTE WATER ENGINEERING - water treatment process & unitsEddy Ankit Gangani
This presentation is made with a view to introduce various units & processes carried out in water treatment plant with various trains or say chains of units to meet Indian Standard criteria.
This presentation envisages on theory Of Filtration, Types of Filters, Slow Sand, Rapid Sand and Pressure Filters Including Construction, Operation, Cleaning, Operational Problems In Filters, Design criteria of Slow & Rapid Sand Filter Without Under Drainage System.
Sludge dewatering is a prior process to manage the sludge. The dewatering requires to decrease the volume of sludge for easy handling. It has two methods: Conventional and advance.
this presentation gives you a quick glimpse of Sludge Dewatering process and method.
Lecture note of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
Lecture note of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
This presentation is about both conventional and advanced treatment of water. TSS and turbidity removal and disinfection by conventional treatment. TDS removal and removal of ionic and non-ionic contaminants by ion exchange, adsorption, and membrane processes is included as the advanced treatment processes.
Big Data in the Water Sector - Integrated Water Network Management - IWC's IT...David Kenny
Smart Water Networks are a reality and they are certainly the future but what is slowing their proliferation? The water industry supply chain has embraced technological enhancements in sensors, communications, analytics and control yet water utilities are reluctant to adopt them. Are we about to see the light at the end of the tunnel as Big Data technologies come to the fore or will current attitudes, particularly risk aversion, hold us back?
Water :the universal need. As we all know water is most essential component to mankind yet its quality is in hazardous state and quantity is declining. This slide contains crucial information about water purification systems like what happens to water before we get it I'm our home?!
Industrial waste water purification procedurepasindulaksara1
The effluent Treatment Plant (ETP) is a method that is used to treat the emanation coming out from many areas of the plant. It includes biological, physical, and chemical processes. It aims to releasing safe water into the environment to prevent it from getting cop0ntaminated. These plants are have been very useful in the process of providing clean water to the environment and have conserved water in a number of ways.
All living things require clean, uncontaminated water as the most crucial compound for life on Earth
Ideally, drinking water should be clear, colorless, and well aerated, with no unpalatable taste or odor, and it should contain no suspended matter, harmful chemical substances, or pathogenic microorganisms.
Wastewater discharge from industries, agricultural pollution, municipal wastewater, and poor environmental sanitation are the main sources of water contamination
Desalination can be defined as any process that removes salts from water. Desalination processes may be used in municipal, industrial, or commercial applications. With improvements in technology. Today there are two main types of desalination technologies – membrane (RO) and thermal (MED, MVC and MSF) desalination.
Similar to Water Treatment Processes:- Coagulation , Flocculation, Filtration by Kalpesh Solanki (20)
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
3. Introduction
Why it is needed?
To kill all pathogenic germs, which are harmful to human health
To remove the unpleasant and objectionable taste and odours
from the water
To remove dissolved gases ,colour of water
To make water fit for domestic, industrial, and commercial uses.
To remove micro organism and colloidal matters
To remove hardness of water
03/28/17 water treatment
3
7. 03/28/17 water treatment 7
Sedimentation:
Removal of Suspended matters having higher
specific gravity than water and also fine suspended matter.
8. 03/28/17 water treatment 8
Aeration –
Dissolving oxygen into the water to remove smell
and taste, promote helpful bacteria to grow, and precipitate
nuisance metals like iron and manganese.
11. Major Clean Up
• Coagulation and flocculation - causes the agglomeration
and sedimentation of suspended solid particles through
the addition of a coagulating agent (usually aluminum
sulfate and/or iron sulfate) to the raw water along with a
polymer to help form a floc.
• Filtration- Remove Micro-organism and colloidal matter
• Disinfection---Pre-chlorination and dechlorination - mostly
to kill algae that would otherwise grow and clog the water
filters. Also kills much of the remaining unprotected
bacteria.
• Softening- To remove hardness
12. 03/28/17 water treatment 12
COAGULATION & FLOCCULATION
Removal of colloidal substances from water
Potable water requirements:
health, aesthetics, economic
Colloids
Size of colloids - light waves
Brownian motion
Stability of colloids
14. 03/28/17 water treatment 14
Theory of coagulation
Coagulation is the destabilization of colloids by addition of
chemicals that neutralize the negative charges
The chemicals are known as coagulants, usually higher
valence
cationic salts (Al3+
, Fe3+
etc.)
Coagulation is essentially a chemical process
Ionic layer compression
Adsorption and charge neutralization
Entrapment in a flocculent mass
16. 03/28/17 water treatment 16
Aluminum Chemistry
1 mole of alum consumes 6 moles of bicarbonate (HCO3
-
)
Al2(SO4)3.14 H2O + 6HCO3
-
⇔ 2Al(OH)3↓+ 6CO2 + 14H2O + 3SO4
-2
•If alkalinity is not enough, pH will reduce greatly
•Lime or sodium carbonate may be needed to neutralize the
acid.
•(Optimum pH: 5.5 – 6.5)
With alum addition, what happens to water pH?
Al2(SO4)3.14 H2O ⇔ 2Al(OH)3↓+ 8H2O + 3H2SO4
-2
17. 03/28/17 water treatment 17
Alkalinity calculation
Al2(SO4)3.14 H2O + 6HCO3
-
⇔ 2Al(OH)3↓+ 6CO2 + 14H2O + 3SO4
-2
594 mg 366 mg
If 200 mg/L of alum to be added to achieve complete
coagulation. How much alkalinity is consumed in mg/L as
CaCO3?
594 mg alum consumes = 366 mg HCO3
-
200 mg alum will consume = (366/594) x 200 mg HCO3
-
= 123 mg HCO3
-
Alkalinity in mg/L as CaCO3 = 123 x (50/61)
= 101 mg/L as CaCO3
19. 03/28/17 water treatment 19
Iron Chemistry
FeCl3+ 3HCO3
-
⇔ Fe(OH)3↓+ 3CO2 + 3Cl-
With iron salt addition, what happens to water pH?
(Wider pH range of: 4 – 9; Best pH range of 4.5 – 5.5)
1 mole of FeCl3 consumes 3 moles of bicarbonate (HCO3)
If alkalinity is not enough, pH will reduce greatly due to
hydrochloric acid formation. Lime or sodium carbonate may
be needed to neutralize the acid. Lime is the cheapest.
20. Mixing device
03/28/17 water treatment 20
1- Mixing basins with baffle walls
2- Mixing basin with mechanical devices (Rapid mixing)
21. 03/28/17 water treatment 21
• Rapid or Flash mixing is the process by which a
coagulant is rapidly and uniformly dispersed through the
mass of water. This process usually occurs in a small basin
immediately preceding or at the head of the coagulation
basin. Generally, the detention period is 30 to 60 seconds and
the head loss is 20 to 60 cms of water. Here colloids are
destabilized and the nucleus for the floc is formed.
Slow mixing brings the contacts between the finely
divided destabilised matter formed during rapid mixing.
23. What is Flocculation?
03/28/17 water treatment 23
Flocculation is the agglomeration of destabilized particles
into a large size particles known as flocs which can be
effectively removed by sedimentation or flotation.
26. 03/28/17 water treatment 26
Why coagulation and flocculation?
Various sizes of particles in raw water
Particle diameter (mm) Type Settling velocity
10 Pebble 0.73 m/s
1 Course sand 0.23 m/s
0.1 Fine sand 0.6 m/min
0.01 Silt 8.6 m/d
0.00010.0001 (10 micron)(10 micron) Large colloidsLarge colloids 0.3 m/y0.3 m/y
0.000001 (1 nano)0.000001 (1 nano) Small colloidsSmall colloids 3 m/million y3 m/million y
Particle diameter (mm) Type Settling velocity
10 Pebble 0.73 m/s
1 Course sand 0.23 m/s
0.1 Fine sand 0.6 m/min
0.01 Silt 8.6 m/d
0.00010.0001 (10 micron)(10 micron) Large colloidsLarge colloids 0.3 m/y0.3 m/y
0.000001 (1 nano)0.000001 (1 nano) Small colloidsSmall colloids 3 m/million y3 m/million y
Colloids – so small: gravity settling not possible
GravItysettlIng
27. Fe species as a function of pH
03/28/17 water treatment 27
28. 03/28/17 water treatment 28
Hydraulic Flocculation
• Horizontally baffled tank
Plan view (horizontal flow)
• Vertically baffled tank
L
Isometric View (vertical flow)
L
W
H
The water flows horizontally.
The baffle walls help to create
turbulence and thus facilitate
mixing
The water flows vertically.
The baffle walls help to
create turbulence and thus
facilitate mixing
29. 03/28/17 water treatment 29
http://www.environmental-center.com/magazine/iwa/jws/art4.pdf
Hydraulic Flocculation
35. Clarifier
• After Flocculation Water enters the settling tank which is
commonly called Clarifier.
Clariflocculator
In modern practice, flocculator and clarifier are
provided in one unit called Clariflocculator in which
chamber is provided in the center and clarifier
compartment is formed by the periferical space.
03/28/17 water treatment 35
38. Filtration
03/28/17 water treatment 38
The process of passing the water through the bed of such
granular materials is known as filtration.
Types of filter
1- The slow sand gravity filter
2- Rapid sand filter
39. Slow sand filters are used in water purification for treating
raw water to produce a potable product. They are typically 1
to 2 metres deep, can be rectangular or cylindrical in cross
section and are used primarily to treat surface water.
Filter through a 3 to 5 foot deep bed of unstratified sand
flow rate 0.05 gallons per minute per square foot.
Biological growth develops in the upper surface of the sand
is primarily responsible for particle and microbe removal.
Effective without pretreatment of the water by
coagulation flocculation‑ .
Periodically clean by removing, cleaning and replacing the
upper few inches of biologically active sand.
03/28/17 water treatment 39
41. Microbial Reductions by Slow Sand
Filtration
• Effective in removing enteric microbes from water.
• Virus removals >99% in lab models of slow sand filters.
– Up to 4 log10; no infectious viruses recovered from filter
effluents
• Field studies:
– naturally occurring enteric viruses removals
• 97 to >99.8 percent; average 98% overall;
• Comparable removals of E. coli bacteria.
– Virus removals=99 99.9%;‑
– high bacteria removals (UK study)
• Parasite removals: Giardia lamblia cysts effectively
removed
– Expected removals ~ 99%
42. Rapid sand filters
03/28/17 water treatment 42
Rapid sand filtration is a purely physical
drinking water purification method. Rapid sand filters (RSF)
provide rapid and efficient removal of relatively large
suspended particles. Two types of RSF are typically used:
Rapid gravity
Rapid pressure sand filters
43. 03/28/17 water treatment 43
•The biggest disadvantages of slow sand filter is that it
requires large area due to slow filtration rate.
•This Requirement make it uneconomical for places where
land is very costly in urban area. In order to reduce
requirement of space and to increase the rate of filtration , a
lot of research conducted which finally led to the developed
of rapid sand filter.
44. 03/28/17 water treatment 44
Rapid sand filters have filter rates 40 times those of slow
sand filters. The major parts of a rapid sand filter are:
• Filter tank or filter box
• Filter sand or mixed-media
• Gravel support bed
• Under drain system
• Wash water troughs
• Filter bed agitators
46. 03/28/17 water treatment 46
PRESSURE FILTERS
Pressure filters fall into two categories:
pressure sand and diatomaceous earth filters. Pressure
filters are used extensively in iron and manganese removal
plants. A pressure sand filter is contained under pressure in
a steel tank, which may be vertical or horizontal, depending
on the space available. As with gravity filters, the media is
usually sand or a combination of media, and filtration rates
are similar to gravity filters. Groundwater is first aerated to
oxidize the iron or manganese, and then pumped through the
filter to remove the suspended material.
48. Construction rapid sand filter
03/28/17 water treatment 48
1- Enclosure tank
2- Filter Media
3- Base material
4- Under Drainage system
5- Other appurtenances
49. Enclosure tank
03/28/17 water treatment 49
Rectangular in plan
Constructed either of masonary or of concrete , coated with
water proof material
Depth- 2.5 to 3.5 m
surface area- 10 to 50 m2
length to width ratio 1.25 to 1.35
50. Filter media
03/28/17 water treatment 50
It consist sand layer -60 to 90 cm in depth
Effective size of sand varies from 0.35 to 0.6 mm
finer sand be used
51. Base material
03/28/17 water treatment 51
Graded gravel
total depth varies from 45 to 60 cm
Divided in to 4 to 5 layers
Size (mm) Depth
(cm)
2 to 5 5-8
5 to 12 5-8
12 to 20 8-13
20 to 38 8-13
38 to 65 13-20
52. Under drainage system
03/28/17 water treatment 52
Purpose:
It collect the filtered water uniformly over the area of gravel
bed.
It provides uniform distribution of backwash water without
disturbing the gravel bed and filter media.
53. Types of under drainage system
03/28/17 water treatment 53
1- Manifold and lateral System