Solid waste managment - Urban and Industrial solid waste management: reason, effect and control

Solid Waste Management; Types of Solid waste Management; Factors affecting Solid Waste Generation

Solid Waste Management

Solid waste management is basic public Services which every citizen should have access to, both for Health-and-hygiene/”>Health and Hygiene, and for ensuring a good quality of living. Sanitation here refers to toilet facilities, whereas solid waste management refers to the management collection and disposal of solid waste (as opposed to liquid waste).
The image of a city as being clean and free of waste, impacts its desirability for doing business by entrepreneurs and for future residents to live.
Municipalities in India are responsible for collection, sweeping, storage, transfer, treatment and final disposal of waste.
A study by NIUA (2015) reports that urban areas in India generate more than 100,000 MT of waste every day, with Mumbai contributing 7000 MT, and Bangalore, 5000 MT.
While the Ministry of Urban Development has mandated several management and handling rules for solid waste, most cities and towns are finding it difficult to comply with these rules, keep their streets clean, and safely dispose the waste.
An analysis of waste disposal in 22 of India’s cities by the Federation of Indian Chambers of Commerce and Industry (FICCI (2009)), as pointed by Sridhar and Kumar (2013), shows that 14 out of India’s 22 cities which were studied, sent more than 75 per cent of their waste to dumpsites, indicating a lack of adequate treatment and disposal facilities.
Mumbai sends 100 per cent of its waste to dumpsites, while Delhi dumps 94 per cent of its waste.

Solid waste management Methods

Centralised method:

This method involves collection of municipal waste from all over the local area and by means of landfilling, dump outside the city/nagar panchayat limits.
This process looks at door-to-door collection of solid waste by waste pickers who hand over to the collection team who then discard the collected waste in the landfill.
The waste pickers are employees of the Municipal Corporation or Nagar Panchayat. The collection team is generally contracted out by a tendering process.

De-centralized method:

This is a model seen in a few places like Suryapet in Andhra Pradesh and Bangalore in Karnataka. The waste is collected ward-wise and is segregated at source into bio-degradable and non-biodegradable.
The biodegradable waste is composted at a nearby facility by different methods of aerobic and anerobic composting.
The non-biodegradable waste is further categorised into paper, plastic, Metal and other waste and then further collected by recyclers for up-cycling or downcycling of products

Rules and regulations associated with SWM

Under the 74th Constitutional Amendment, Disposal and managemenf of Municipal Solid Waste is one of the 18 functional domains of the Municipal Corporations and Nagar Panchayats.
The various rules and regulations for solid waste management are:

The Bio-Medical Waste (Management And Handling) Rules, 1998
Municipal Solid Waste (Management And Handling) Rules 2000
The Plastic Waste (Management And Handling) Rules, 2011
E-Waste (Management And Handling) Rules, 2011

There are other court cases that find their importance in terms of Solid Waste Management in India:

Almitra Patel vs. Union of India
L Wadhera vs. Union of India.
Judgement of Karnataka High Court towards Mandatory Segregation at Source

Solid Waste Management – Major Issue for India

The Government of India had notified the Municipal Solid Waste (Management and Handling) Rules in 2000, thereby making it mandatory for all Urban Local Bodies in the country to engage in collection, segregation, secondary storage in covered bins, transportation in covered vehicles, processing through composting or waste-to-energy technologies and disposal of rejects in engineered/sanitary landfills.

Door to door collection coverage is scanty at best, and segregation at household level is a rarity.
Collection even from community bins is not regular. Collection efficiency is low.
Processing is limited to very small portion of the waste.
Dumping is done in land-fills without any regard for Environment and without following scientific methods of disposal. Such inadequate disposal practice lead to problems that will impair human and animal health and result in economic, environmental and biological losses.
Improper waste management causes public health and environmental hazards like Climate change, air and Water Pollution, Soil contamination, spreads odours and disease, and breeds vermin including flies, mosquitoes, rats, dogs and monkeys.
Even after 12 years, most cities have confined themselves to collection and transportation of solid waste. Processing and safe disposal are being attempted only in a few cases.
The CPCB report also reveals that only 68% of the MSW generated in the country is collected of which, 28% is treated by the municipal authorities. Thus, merely 19% of the total waste generated is currently treated. .

Some of the major issues concerning solid waste management are:

Absence of segregation of waste at source
Lack of funds for waste management at ULBs
Lack of technical expertise and appropriate institutional arrangement
Unwillingness of ULBs to introduce proper collection, segregation, transportation and treatment/ disposal systems
Indifference of citizens towards waste management due to lack of awareness
Lack of community participation towards waste management and hygienic conditions
Lack of sewage management plan.

Suggestion Made by Kasturirangan report For solutions of Solid Waste

The Kasturirangan report by PC highlights the need for an integrated approach:

Reduction and segregation of waste at source and also efficient utilization of various components of the waste.
Principle of Reduce, Reuse, Recover , Recycle and Remanufacture (5Rs) should be adopted
Motivate Resident Welfare Associations (RWA), CBO / NGO’s to take up work of community awareness and door to door collection
Integration of kabadiwalas and rag pickers into MSWM system
It emphasizes setting up centralised (for incineration, gasification, pyrolysis) or decentralised (for biomethanation, vermicomposting) waste processing facilities keeping in view the quantity and quality of waste generated and financial viability of the processing technology.
Set up Common Regional Sanitary Landfill Facility, to reduce the land requirement. Cities above a Population of one million should set-up their own landfill and permit all cities and towns within 50km periphery of the city to use the facility for disposal of their waste.

Internationally good example for Solid Waste Management:

For instance, Copenhagen recycles most of the waste it generates and lets only 3 per cent go to the landfill.
Japan: In Japan, Incineration has been the primary disposal route for waste due to lack of space for landfills – 74% of all waste produced in Japan is incinerated with just 2% sent to landfill.
Extending the idea of recycling, Kitgum town in Uganda traps used water from houses and utilises it to grow food in grey water gardens.

Different type of Waste

Municipal Solid Waste

Municipal solid waste (MSW) is generated from households, offices, hotels, shops, schools and other institutions.
The major components are food waste, paper, plastic, rags, metal and glass, although demolition and construction debris is often included in collected waste, as are small quantities of hazardous waste, such as electric Light bulbs, batteries, automotive parts and discarded medicines and chemicals.

Industrial Solid Waste

Industrial solid waste in Indian states, as elsewhere, encompasses a wide range of materials of varying environmental toxicity.
Typically this range would include paper, packaging materials, waste from Food Processing, oils, solvents, resins, paints and sludges, glass, ceramics, stones, metals, plastics, rubber, leather, wood, cloth, straw, abrasives, etc.
As with municipal solid waste, the absence of a regularly up-dated and systematic Database on industrial solid waste ensures that the exact rates of generation are largely unknown

Agricultural Waste and Residues

Expanding agricultural production has naturally resulted in increased quantities of Livestock waste, agricultural crop residues and agro-industrial by-products.

Hazardous Waste

With rapid development in agriculture, industry, commerce, hospital and health-care facilities, the Indian State is consuming significant quantities of toxic chemicals and producing a large amount of hazardous waste.
Currently, there are about 110000 types of toxic chemicals commercially available.
Each year, another 1 000 new chemicals are added to the market for industrial and other uses.
The availability of robust data on the generation of hazardous waste for Indian States is limited by the reliability of information on the quantities and types of hazardous waste produced at the country level.
This is due to a variety of reasons, including the lack of qualified personnel to undertake the necessary assessment, the reluctance of industries to provide process information (including waste arising data) and a poor appreciation of the extent to which generated waste is hazardous.
Where data is available, significant difficulties are encountered in seeking to draw international comparisons due to differences in Classification and definition of hazardous waste from country to country within in the region.
Most hazardous waste is the by-product of a broad spectrum of industrial, agricultural and manufacturing processes, nuclear establishments, hospitals and health-care facilities.
Primarily, high-volume generators of industrial hazardous waste are the chemical, petrochemical, petroleum, metals, wood treatment, pulp and paper, leather, textiles and energy production Plants (coal-fired and nuclear power plants and petroleum production plants).
Small- and medium-sized industries that generate hazardous waste include auto and equipment repair shops, electroplating and metal finishing shops, textile factories, hospital and health-care centres, dry cleaners and pesticide users.

Type-based classification Solid Waste

Classification of wastes based on types, i.e., physical, chemical, and biological characteristics of wastes, is as follows:

Garbage:

This refers to animal and vegetable wastes resulting from the handling, sale, and storage, preparation, cooking and serving of food.
Garbage comprising these wastes contains putrescible (rotting) organic matter, which produces an obnoxious odour and attracts rats and other vermin.
It, therefore, requires special attention in storage, handling and disposal.

Ashes and residues:

These are substances remaining from the burning of wood, coal, charcoal, coke and other combustible materials for cooking and heating in houses, institutions and small industrial establishments.
When produced in large quantities, as in power-generation plants and factories, these are classified as industrial wastes.
Ashes consist of fine powdery residue, cinders and clinker often mixed with small pieces of metal and glass. Since ashes and residues are almost entirely inorganic, they are valuable in landfills.

Bulky wastes:

These include large household appliances such as refrigerators, washing machines, furniture, crates, vehicle parts, tyres, wood, trees and branches.
Since these household wastes cannot be accommodated in normal storage containers, they require a special collection mechanism.

Street wastes:

These refer to wastes that are collected from streets, walkways, alleys, parks and vacant plots, and include paper, cardboard, plastics, dirt, leaves and other vegetable matter.
Littering in public places is indeed a widespread and acute problem in many countries including India, and a solid waste management system must address this menace appropriately.

Biodegradable and non-biodegradable wastes:

Biodegradable wastes mainly refer to substances consisting of organic matter such as leftover food, vegetable and fruit peels, paper, textile, wood, etc., generated from various household and industrial activities.
Because of the action of micro-organisms, these wastes are degraded from complex to simpler compounds.
Non-biodegradable wastes consist of inorganic and recyclable materials such as plastic, glass, cans, metals, etc

Dead animals:

With regard to municipal wastes, dead animals are those that die naturally or are accidentally killed on the road.
Note that this category does not include carcasses and animal parts from slaughter-houses, which are regarded as industrial wastes.
Dead animals are divided into two groups – large and small. Among the large animals are horses, cows, goats, sheep, pigs, etc., and among the small ones are dogs, cats, rabbits, rats, etc.
The reason for this differentiation is that large animals require special equipment for lifting and handling when they are removed.
If not collected promptly, dead animals pose a threat to public health since they attract flies and other vermin as they decay. Their presence in public places is particularly offensive from the aesthetic point of view as well.

Construction and demolition wastes:

These are wastes generated as a result of construction, refurbishment, repair and demolition of houses, commercial buildings and other structures.
They consist mainly of earth, stones, concrete, bricks, lumber, roofing and plumbing materials, heating systems and electrical wires and parts of the general municipal waste stream.

Farm wastes:

These wastes result from diverse agricultural activities such as planting, harvesting, production of milk, rearing of animals for slaughter and the operation of feedlots.
In many areas, the disposal of animal waste has become a critical problem, especially from feedlots, Poultry farms and dairies.

Hazardous wastes:

Hazardous wastes are those defined as wastes of industrial, institutional or consumer origin that are potentially dangerous either immediately or over a period of time to human beings and the environment.
This is due to their physical, chemical and biological or radioactive characteristics like ignitability, corrosivity, reactivity and toxicity.
Note that in some cases, the active agents may be liquid or gaseous hazardous wastes.
These are, nevertheless, classified as solid wastes as they are confined in solid containers.
Typical examples of hazardous wastes are empty containers of solvents, paints and pesticides, which are frequently mixed with municipal wastes and become part of the urban waste stream.
Certain hazardous wastes may cause explosions in incinerators and fires at landfill sites. Others such as pathological wastes from hospitals and radioactive wastes also require special handling.
Effective management practices should ensure that hazardous wastes are stored, collected, transported and disposed of separately, preferably after suitable treatment to render them harmless.

Sewage wastes:

The solid by-products of sewage treatment are classified as sewage wastes.
They are mostly organic and derived from the treatment of organic sludge separated from both raw and treated sewages.
The inorganic fraction of raw sewage such as grit and eggshells is separated at the preliminary stage of treatment, as it may entrain putrescible organic matter with pathogens and must be buried without delay.
The bulk of treated, dewatered sludge is useful as a soil conditioner but is invariably uneconomical.
Solid sludge, therefore, enters the stream of municipal wastes, unless special arrangements are made for its disposal.

SOLID WASTE TREATMENT

Current treatment strategies are directed towards reducing the amount of solid waste that needs to be landfilled, as well as recovering and utilizing the materials present in the discarded wastes as a resource to the largest possible extent.
Different methods are used for treatment of solid waste and the choice of proper method depends upon refuse characteristics, land area available and disposal cost they are as follows

Incineration
Compaction
Pyrolysis
Gasification
Composting
Incineration

It is a controlled combustion process for burning solid wastes in presence of excess air (Oxygen) at high temperature of about 1000 Degree Centigrade and above to produce gases and residue containing non-combustible material.
One of the most attractive features of the incineration process is that it can be used to reduce the original volume of combustible MSW by 80– 90%.

Compaction

The waste is compacted or compressed. It also breaks up large or fragile items of waste.
This process is conspicuous in the feed at the back end of many garbage collection vehicles deposit refuse at bottom of slope for best compaction and control of blowing litter.

Pyrolysis

Pyrolysis is defined as thermal degradation of waste in the absence of air to produce char, pyrolysis oil and syngas, e.g. the conversion of wood to charcoal also it is defined as destructive distillation of waste in the absence of oxygen.
External source of heat is employed in this process. Because most organic substances are thermally unstable they can upon heating in an oxygen-free Atmosphere be split through a combination of thermal cracking and condensation reactions into gaseous, liquid and solid fraction

Gasification

Gasification is a process in which partial combustion of MSW is carried out in the presence of oxygen, but in lesser amount than that is required for complete combustion, to generate a combustible gas (fuel gas) rich in carbon monoxide and hydrogen e.g. the conversion of coal into town gas.
When a gasifier is operated at Atmospheric Pressure with air as the oxidant, the end products of the gasification process are a low-energy gas typically containing (by volume) 20% CO, 15% H2, 10% CO2 and 2% CH4.

Composting

Composting is the most responsible technical solution for many developing countries especially, where the climate is arid and the soil is in serious need of organic supplements.
The composting process usually follows 2 basic steps, which may be preceded or followed by pre- or post treatments (crushing, sorting, humidification, mixing with other waste, etc…)

WASTE DISPOSAL

Landfills:- Landfilling is the most simple and economical measure as far as natural decomposition occurs at the disposal site Unscientific and ordinary Landfilling is the common practice for solid waste disposal in many developing countries.
Sanitary Landfills:- Sanitary Landfilling is a process of dumping of MSW in a scientifically designed area spreading waste in thin layers, compacting to the smallest practicable volume and covering with soil on daily basis. The methane (rich biogas) is produced due to anaerobic decomposition of organic matters in solid waste.
Underground injection wells:- waste are injected under pressure into a steel and concrete-encased shafts placed deep in the earth.
Waste piles:- it is accumulations of insoluble solid, non flowing hazard waste. Piles serves as temporary or final disposal
Land treatment:- it is a process by which solid waste, such as sludge from wastes is applied onto or incorporated into the soil surface

Factors affecting the generation rate of solid waste

Factors that influence the quantity of municipal wastes generated include:

Geographic location.
Season of the year.
Collection frequency.
Use of kitchen waste grinders.
Characteristics of populace.
Extent of salvaging and recycling.
Public attitudes.

Typical commercial and industrial unit waste generation rates are:

Office buildings-0.5-1.1 kg/ employee *day
Restaurants- 0.2-0.8 kg/customer*day
Canned and frozen foods-0.04-0.06 tonnes/ tonne of raw product.
Printing and publishing-0.08-0.10 tonnes/ tonne of raw paper
Automotive-0.06-0.8 tonnes/ vehicle produced
Petroleum refining- Tonnes/ employee*day
Rubber 0.01-0.3 tonnes/ tonne of raw rubber.

Solid waste is a major environmental problem in many parts of the world. It can pollute the air, water, and land, and it can also contribute to Climate Change. There are many different types of solid waste, including household waste, industrial waste, and agricultural waste.

Household waste is the most common type of solid waste. It includes things like food scraps, paper, plastic, and metal. Industrial waste is generated by factories and other businesses. It can include things like chemicals, metals, and hazardous materials. Agricultural waste is generated by farms. It can include things like manure, crop residues, and pesticides.

Solid waste can have a number of negative effects on the environment. It can pollute the air, water, and land. It can also contribute to climate change. When solid waste is burned, it releases harmful pollutants into the air. These pollutants can cause respiratory problems, heart disease, and cancer. When solid waste is buried, it can contaminate groundwater. It can also release methane, a greenhouse gas that is more potent than carbon dioxide.

There are a number of things that can be done to control solid waste. One important step is to reduce the amount of waste that is generated. This can be done by recycling, composting, and reducing consumption. Another important step is to manage solid waste properly. This includes collecting and disposing of waste in a way that does not harm the environment.

Recycling is one of the most effective ways to reduce solid waste. When materials are recycled, they are turned into new products. This helps to conserve Resources and reduce pollution. Composting is another effective way to reduce solid waste. When organic materials are composted, they are turned into a nutrient-rich soil amendment. This can be used to improve soil quality and reduce the need for Fertilizers.

Reducing consumption is another important way to reduce solid waste. This can be done by making choices that reduce the amount of waste that is generated. For example, people can choose to buy products with less packaging, or they can bring their own reusable bags when they go shopping.

Managing solid waste properly is also important. This includes collecting and disposing of waste in a way that does not harm the environment. Waste should be collected regularly and disposed of in a landfill or incinerator. Landfills should be designed to prevent the release of pollutants into the environment. Incinerators should be equipped with pollution control devices to reduce emissions.

Solid waste management is a complex issue, but it is an important one. By taking steps to reduce, reuse, and recycle, we can help to protect the environment and reduce the amount of waste that is generated.

In addition to the above, here are some other things that can be done to control solid waste:

Educate the public about the importance of solid waste management. This can be done through public awareness campaigns, school programs, and other initiatives.
Encourage businesses to adopt sustainable practices. This can be done through government incentives, public-private partnerships, and other initiatives.
Invest in research and development of new technologies for solid waste management. This can help to find more efficient and environmentally friendly ways to manage solid waste.
Work with other countries to address the global problem of solid waste. This can be done through international agreements, cooperation on research and development, and other initiatives.

By taking these steps, we can help to reduce the amount of solid waste that is generated, manage it more effectively, and protect the environment.

What is solid waste management?

Solid waste management is the collection, processing, and disposal of solid waste. It is a complex issue that affects both the environment and human health.

What are the different types of solid waste?

Solid waste can be divided into two main categories: municipal solid waste (MSW) and industrial solid waste (ISW). MSW is the waste generated by households and businesses, while ISW is the waste generated by industrial and commercial activities.

What are the causes of solid waste?

The main causes of solid waste are population Growth, Economic Development, and changes in lifestyles. As the population grows, so does the amount of waste produced. Economic development also leads to increased consumption and waste production. Changes in lifestyles, such as the shift to disposable products, also contribute to increased waste production.

What are the effects of solid waste?

Solid waste can have a number of negative effects on the environment and human health. These include:

Air Pollution: When solid waste is burned, it releases harmful pollutants into the air. These pollutants can cause respiratory problems, heart disease, and cancer.
Water pollution: When solid waste is not properly disposed of, it can contaminate water supplies. This can cause gastrointestinal problems, reproductive problems, and neurological problems.
Land pollution: When solid waste is not properly disposed of, it can contaminate soil and groundwater. This can make the land unusable for agriculture or other purposes.
Climate change: The production and disposal of solid waste contributes to climate change. This is because the burning of solid waste releases greenhouse gases into the atmosphere.

What are the ways to control solid waste?

There are a number of ways to control solid waste, including:

Reduce: The first step in controlling solid waste is to reduce the amount of waste that is produced. This can be done by making changes to lifestyles, such as choosing reusable products over disposable products.
Reuse: Another way to control solid waste is to reuse products whenever possible. This can be done by repairing damaged items or donating them to charity.
Recycle: Recycling is the process of converting waste materials into new products. This is a very effective way to reduce the amount of waste that is sent to landfills.
Compost: Composting is the process of turning organic waste into a soil amendment. This is a great way to reduce the amount of waste that is sent to landfills and to improve soil quality.
Dispose of properly: When waste cannot be reduced, reused, recycled, or composted, it must be disposed of properly. This means disposing of it in a landfill that is designed to protect the environment.

What are the benefits of solid waste management?

There are a number of benefits to solid waste management, including:

Protecting the environment: Proper solid waste management can help to protect the environment by reducing air pollution, water pollution, land pollution, and climate change.
Improving public health: Proper solid waste management can help to improve public health by reducing the risk of respiratory problems, heart disease, cancer, gastrointestinal problems, reproductive problems, neurological problems, and other health problems.
Conserving resources: Proper solid waste management can help to conserve resources by reducing the amount of waste that is sent to landfills.
Creating jobs: The solid waste management industry employs millions of people around the world.
Promoting economic development: The solid waste management industry can promote economic development by creating jobs and by providing a valuable service to businesses and communities.

Which of the following is not a type of solid waste?
(A) Municipal solid waste
(B) Industrial solid waste
(C) Hazardous waste
(D) Nuclear waste
Which of the following is the most common type of solid waste?
(A) Municipal solid waste
(B) Industrial solid waste
(C) Hazardous waste
(D) Nuclear waste
Municipal solid waste is primarily composed of:
(A) Paper and paperboard
(B) Food scraps
(C) Yard trimmings
(D) Plastics
The main reason for solid waste management is to:
(A) Protect human health and the environment
(B) Conserve Natural Resources
(C) Reduce greenhouse gas emissions
(D) All of the above
The most common method of solid waste disposal is:
(A) Landfill
(B) Incineration
(C) Recycling
(D) Composting
Landfills are the most common method of solid waste disposal because they are:
(A) Cheap and easy to operate
(B) Safe and environmentally friendly
(C) Capable of handling large volumes of waste
(D) All of the above
Incineration is a method of solid waste disposal that:
(A) Reduces the volume of waste by up to 90%
(B) Produces energy in the form of heat or electricity
(C) Can release harmful pollutants into the air
(D) All of the above
Recycling is a method of solid waste disposal that:
(A) Reduces the amount of waste sent to landfills
(B) Conserves natural resources
(C) Reduces greenhouse gas emissions
(D) All of the above
Composting is a method of solid waste disposal that:
(A) Reduces the amount of waste sent to landfills
(B) Produces a valuable soil amendment
(C) Reduces greenhouse gas emissions
(D) All of the above
Which of the following is the best way to reduce your contribution to solid waste?
(A) Recycle
(B) Compost
(C) Reduce
(D) All of the above