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5 July 2019

Solid Waste Management on a Campus in a Developing Country: A Study of the Indian Institute of Technology Roorkee

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Department of Architecture and Planning, Indian Institute of Technology, Roorkee 247667, India
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Recycling2019, 4(3), 28;https://doi.org/10.3390/recycling4030028
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Abstract

The rates of waste generation in India have been increasing with increasing population and urbanization. Since higher education campuses are like mini autonomous cities, they can act as a model for solid waste management (SWM) and enhance sustainable development. SWM is the controlled generation, storage, collection, transport, processing, and disposal of solid waste considering public health, conservation, economics, and environmental conditions. A SWM program on campus will benefit the campus through reduced resource consumption and waste diversion. Developing countries like India are lacking behind in SWM from the developed countries which are using advanced technologies along with efficient management. This paper will analyze the issues related to SWM at IITR (Indian Institute of Technology Roorkee) campus and provide feasible solutions to be implemented at IITR campus for becoming zero waste campus. The SWM at the IITR campus is disorganized and incompetent. Lack of awareness and improper collection, imprecise segregation, exposed transportation, inefficient processing and disorganized disposal of solid waste are the major reasons for it. IITR has the potential to manage its waste properly through various techniques discussed in this paper. These would reduce the amount of waste diverted to landfills and the problems arising on campus due to solid waste, thus leading to a zero waste campus. Other campuses like IITR with similar context and issues can learn from this case study and work towards a zero-waste campus. This paper identifies a need to implement a robust SWM at the IITR campus in India.

1. Introduction

Solid waste management (SWM) is one of the basic services arranged and administered by the municipal authorities in the country to enhance the cleanliness of the urban centers [1]. The main objectives of SWM are the maintenance of clean and hygienic conditions and reduction in the quantity of solid waste (SW), which is disposed of in the sanitary landfill facility (SLF) of the area after recovery of material and energy from it [2]. However, mostly the service is inefficient and weak due to lack of scientific methods and new approaches, low population coverage, and marginalization of the poor [3]. Poor management of waste leads to littering and thus unsanitary living conditions [4]. The growing problem of SWM due to population growth is not dealt with effectively as the municipal laws governing the urban local bodies do not have efficient and competent provisions to handle this growth [5]. Rapid urbanization is augmenting this problem, thus making it critical.
The average rates (0.5–0.99 kg per person per day) of waste generation are higher in India as compared to those (0.1–0.49 kg per person per day) in low-income countries worldwide and much lower than the developed economies (greater than 1.5 kg per day) of the world [6,7]. Figure 1 shows the comparison of global waste generation per capita per day in kg. However, there is a constant increase in the waste generation especially in the larger cities due to lifestyle changes, use of packaging materials, etc. Growth of urban population of 2.7 percent to 3.5 percent per annum will result in an increase of over five percent in a solid waste generation [1,8]. As per the estimation of the Energy and Resource Institute (TERI), the waste generation exceeds 260 million tons per year by 2047, which is more than five times the current level in India. Cities with a population over 100,000 are the major contributors (72.5 percent) of total waste generated in the country as compared to the 3955 urban centers which produce about 17.5 percent [1]. Figure 2 represents the waste generated in different cities of India with a comparison of the change in the rates of waste generation over time. The per capita per day waste generation in urban cities have changed from an average of 0.5 kg to 1.5 kg [9,10].
Figure 1. Comparison of global waste generation per capita per day in kg (source: http://datatopics.worldbank.org/what-a-waste/).
Figure 2. Per capita solid waste (SW) generation rates of various Indian cities (Source: CPCB-2004, CPCB, 2017).
Higher education institute (HEI) campuses replicate a city’s characteristics on a small level, producing similar environmental impacts. Therefore, they can be considered as small cities [11]. Thus these campuses can demonstrate and influence the local neighborhoods to adopt and successfully implement sustainable practices [12]. The ever-growing global concern about environmental sustainability in HEI campuses has accelerated the concept of sustainable campuses. SWM is one of the basic parameters of environmental sustainability [13]. A dedicated SWM program on the campus will sensitize and build the consciousness of the campus occupants toward waste management; increase the productivity and performance of students and employees by providing clean and healthy workplace; influence the local community by creating a difference in the level of cleanliness between the campus and the local environment [14].
The campus occupants, through practice, and the neighborhood communities, through influence, thus become the direct beneficiaries of the concept. The community can be sensitized about the benefits of SWM through awareness programs, motivational interactions, web portal and sharing information on the issues along with the community participation [15].
The current study evaluates the solid waste profile at Indian Institute of Technology Roorkee (IITR) campus, and characterize the waste generated along with its source by means of qualitative and quantitative analysis. It also identifies SWM systems adopted in the campus. Based on the literature and technologies available for SW processing, it suggests a corrective course of action for SWM at the IITR campus to make it a ‘zero-waste’ campus.

2. Theoretical Background

SWM basically includes storage and collection of SW; transfer and transport of SW and last is SW disposal and treatment which includes recycling of organic waste, thermal treatment techniques, recovery of recyclable products and landfilling [16].
The management of the solid waste is done on the bases of priority listing, where the arrangement of the process is in order of rank. The conventional waste management methods are focused on the collection, transportation and disposal to the landfill site [17]. Hierarchy of the waste management needs to be strictly followed to focus on the long term environmental, economically sound results [18]. The preferred order of preference of SWM includes generation and separation; Collection, transfer and transport; recycling; treatment and final disposal [19].
Reducing the waste at the prime source is the first step of waste hierarchy and coping mechanism. It is done through developing awareness by the authorities amongst the individuals. Source segregation of waste must be strictly followed through various capacity building and coping mechanism for getting recyclable material for recycling and treatment processes. An important coping mechanism is technical and financial strategy formulation, understanding the process of waste management, interlinking of stakeholders, influencing native social–cultural aspects and food habits. This helps to develop sustainable waste management system [15].
The waste flow case studies are conducted on the basis of the steps of solid waste management detailed out in Figure 3. The amount of waste present at each step is calculated along with the techniques used. The study needs to be sequential to know the advantages and disadvantages of techniques and processes used at every step of SWM [20,21].
Figure 3. Conceptual framework for solid waste management (SWM) sound practices coping mechanism [1].

2.1. Sound Practices in Waste Management: (Based on the Management Theories of Waste)

The sound practices of the waste management refer to policies and technologies which set the balance effectively between the environment, society and economy. Administrative interventions and community involvements contribute to sustainable SWM system [22]. Reduction of waste at source by the individual generator through the use of products which are reusable is the first option [23]. Composting is a highly efficient and beneficial technique of SWM for organic waste especially for countries like India where the generation of organic waste is higher than the developing countries. Some studies show that 80 to 90% of waste going to landfill sites can be prevented [19]. The process of recycling of inorganic waste is an economical method of utilizing the separated waste to make new products. The participation mechanism in the waste management process is extremely important as key points addresses the public participation, privatization, community participation, partnerships, capacity building and skill development. Figure 3 shows how the coping mechanism is interlinked to sound waste management practices.

2.2. Comparison of International Studies on SWM

Segregation: sound practices are inadequate in developing countries as compared to the developed countries [24]. Kamikatsu is the first Japanese municipality which became a zero waste city of a strongly implemented SWM policy, where the residents sort 45 types of waste at the source in 13 categories. The region is able to recycle almost 81% of the total waste. As a management technique, Germany is using an advanced management technique (enhanced resolution, mobile sorting) [25]. The frequency of waste collection is an important part of the waste management system. As compared to developing countries, developed countries are far ahead with the strict rule on the collection frequency with the advanced mechanism. The segregation of waste into different typologies makes their system more efficient as a major fraction of segregated waste is recyclable or suitable for incineration [26]. Developing countries are struggling to achieve a timely collection with 100% door to door collection because of poor resources and old equipment [27]. Inefficient storage capacity is another issue faced by the municipalities [28]. There are mainly two kinds of innovative mechanism tested and utilized with positive results—composting (aerobic, anaerobic and vermicomposting) and waste to energy: (biomethanation, incineration, and pelletization, gasification, pyrolysis, etc.) in the developed [16]. Sweden has achieved the zero waste concept as their annual landfill waste is reduced to almost zero through an incineration process for generating electricity [29]. The Netherlands is following thermal waste incineration since 1919 [30]. They have introduced a landfill tax to increase the recycling rate and reduce the landfill [31]. India needs to formalize the SWM to get the best results with the treatment facilities like developed countries [32]. Collection and segregation frequency need to be mechanized [16], the waste to electricity generation is feasible along with composting and methane gas formulation as it is more effective due to major argo waste generation annually [33]. India and China have become the biggest markets for recycling of waste in recent time due to industrial and infrastructure growth with a major portion of the plastic metal and paper being processed to recycling [34].

2.3. Key Issues of SWM in India

Lack of implementation of comprehensive short and long term plans by the municipal authorities to handle SWM in conformity with the Municipal Solid Waste Rules (2000), India (www.cpcb.nic.in) is one of the major issues of SWM in India [35,36]. Also, the majority of the municipal authorities do not have proper waste processing and disposal facilities. Waste management is generally considered as a service to increase personal revenues. With the current increase in population, the cities and towns will not get wastelands in the future for dumping waste. Therefore, there will be a need to go for 100 percent recycling and reuse of waste, thus aim for zero waste for landfill.

2.4. Steps of SWM in India (CPCB 2000)

Figure 4 demonstrates the step of SWM as listed and advised by the Central Pollution Control Board (CPCB) in 2000 [35].
Figure 4. Steps of solid waste management [35].

2.5. Factors Governing the Choice of Technology

Economic viability and sustainability along with environmental implications are the major factors governing the choice of technology for implementation in SWM [37]. There are several other key factors such as:
  • The origin and quality of the SW.
  • Presence of hazardous or toxic waste.
  • Availability of outlets for energy recovered.
  • The market for the compost produced.
  • Cost of waste processing such as land price, capital and labor costs.
  • Capability and experience of the technology used.

2.6. Classification of SW

SW can be classified into various types depending on their sources. Table 1 details the general classification of SW.
Table 1. General classification of solid waste (SW) [38].

2.7. Technologies for Processing, Treatment, and Disposal of SW

There are various technologies available and used for management of SW. The availability of SW in mixed form in India poses a challenge to its treatment process and makes it hazardous. The main reason for this scenario is the lack of awareness among the people at various levels. Hence source separation of waste is important to get the best possible result and implement any strategies successfully.
Hence, source separation of waste is important to get the best possible result and implement any strategies successfully. The broad waste types and their relevant techniques with benefits and issues have been given in Table 2.
Table 2. Technologies available for processing, treatment and disposal of SW [1,39,40].

3. Data Collection and Selection of Case Study

As per the guidelines provided by the Indian Ministry of Urban Development (MoUD) in the form policies of SWM rule 2016, all gated society and campuses have been advised to develop the treatment and segregation of waste within their premise [40]. The author needed to have an immersive experience in the IIT to write this manuscript. The stay of the authors in IITR for a long period of time led to the selection of IITR as a case study to write this manuscript.

3.1. Case Study—IITR Campus

IITR is an autonomous institution funded by the central government of India. It is one of the premier institutes of India. The campus is situated in Roorkee, a town in the hilly state of Uttarakhand. The campus is spread over an area of 365 acres and is divided among the academic departments and centers, hostels for students, residences of faculty and staff and other facilities provided for the campus occupants. The current population of the campus is around 12,000 (2018–2019).
Existing solid waste management practice in the campus includes segregation of waste (only in the staff and faculty residences) at source into organic and non-organic through color coded dustbins (blue and green). The waste thus generated within the campus is collected from community bins kept/constructed at various locations and transported from community bins to disposal site located outside the campus. Finally, the waste is dumped into the municipal dumping site. The contract is given to the local contractor to carry the waste from the community bins inside the campus and dump them to the municipal dumping site outside the campus. At the building level, waste is collected daily and dumped into the community bins. From these community bins, waste is collected twice a week. Waste collectors called local-vendor (kabariwalas) also collect waste like glass bottles, newspapers, metal scrap, etc. from residences of staff and hostels. The Student organization NSS (National Service Scheme) collect old clothes from staff residents and hostels and distribute them to needy local people. Figure 5 details out the steps of SWM at the IITR campus.
Figure 5. Steps of SWM at the Indian Institute of Technology Roorkee (IITR) campus.

3.2. Data Collection and Analysis Method

The case study was analyzed during the immersive experience of the authors on the campus during the research. For this study, primary surveys were conducted by the authors at the IITR campus over a period of two months starting from November 2018 to December 2018. During the field study, the data was collected by the authors through (a) personal observations (b) interviews with professors, students and employees, and (c) in the form of recorded documents from the campus authorities. The survey inquired about the various details of SWM at the campus. For the purpose of the study, the IITR campus was divided into nine zones and a survey of each zone was conducted to identify (i) the types of waste, (ii) quantities of waste, (iii) management practices and (iv) issues and challenges. Samples were collected from various bins qualitative (visual) and quantitative data was collected. Discussions with the mess in charge, cleaning staff and management staff were held and issues were identified. Table 3 shows a typical example of the data collection. All the data collected in the primary survey was filtered, analyzed and documented. The data was analyzed based on literature study and using Microsoft Excel as a tool. Further, all information pertaining to each step of SWM on the campus was gathered and the quantity of waste was obtained. Data was compiled and tabulated as per the type of waste generated on campus and the quantity of each type of waste. Then the data collected from these sources was diligently analyzed and tallied against each other to identify the issues of SWM in IITR campus along with the issues cited by the interviewees. An optimum solution for each issue was provided based on the Section 2, Theoretical Background. Figure 5 details out the steps of SWM at the IITR campus based on the survey.
Table 3. Data collection.

4. Results and Discussions

All the data collected in the primary survey was filtered analyzed and documented. The data was analyzed based on literature study and using Microsoft Excel as a tool. The quantity and various types of waste were obtained on the basis of the survey (Table 4, Table 5 and Table 6).
Table 4. Classification of solid waste as per different building.
Table 5. Total amount of waste generation (kg/day).
Table 6. Types and quantity of solid waste.

4.1. Issues Identified

As evident from Table 6, organic and garden waste together constitute the most solid waste generated on campus, paper waste being the second largest solid waste generated on campus that has the scope of recycling. The issues identified at each step of SWM in the campus are listed in Table 7.
Table 7. Issues identified at each step of solid waste management (SWM) at Indian Institute of Technology Roorkee (IITR) campus.

4.2. Potential Solutions

The SWM in IITR campus is inadequate and needs development. The SW needs to be segregated and disposed of off with scientific methods to reduce environmental impact. Various processing systems need to be adopted for a different type of waste. Medical waste is already being treated/incinerated as per the prescribed medical waste guidelines. Plastic, metal and glass waste has the scope of recycling. Organic waste being the largest contributor of the SW generated at IITR has the scope of decomposing within the campus itself. Table 8 enlists the potential solutions for SWM at the IITR campus. Table 9 lists the advanced recycling strategic formation for the I.I.T. Roorkee Campus.
Table 8. Potential solutions for SWM at IITR campus.
Table 9. Advance recycling strategic formation for the IITR Campus.

4.3. Attempt at Zero Organic Waste at the IITR Campus

A lot of organic waste is generated on the campus primarily from the hostel mess, green areas, and trees. This waste, as a regular practice, is disposed of along with the other waste. Around 1675.87 kg of waste generated on the campus can be decomposed to obtain organic manure. Composting is an easy and natural bio-degradation process that takes organic wastes i.e., remains of plants and garden and kitchen waste and turns into nutrient-rich food for your plants. Composting, normally used for organic farming, occurs by allowing organic materials to sit in one place for months until microbes decompose it. Composting is one of the best methods of waste disposal as it can turn unsafe organic products into safe compost. On the other hand, it is a slow process and takes a lot of space. Due to the limitation of land, machines can be used for organic decomposing and shredding of waste.
Sellable recyclable, non-recyclable and e-waste need to be separated at the source itself or at a specific area within the campus and sent to respective recycling industries directly, and hence minimize the waste sent to the landfill sites. The campus, in future, needs to develop an on-campus decentralized treatment system, where biodegradable waste can be utilized to make biogas; plastic and styrofoam can be utilized to obtain alternative fuel, pavement tile and used in road construction. Dry leaves can also be utilized to make pallet with the briquetting technique, which is a good coal substitute for cooking food in the mess or heating purposes. Construction and demolition waste can be used to make pavement blocks. As a result of the literature review and Table 2, Table 10 has been derived for the IITR campus to show the strategies which can be used to treat different type of waste.
Table 10. Strategies used to treat different type of waste.
Suggestions
  • Sensitizing and motivational programs need to be conducted for making people more aware of the zero waste campus concept and its benefits.
  • Organic waste Shredders will take care of food waste, green vegetables, bones, garden waste, green coconut, etc.
  • Bio–mechanical Composter converts organic waste added to the machine into nitrogen-rich compost by reducing its volume by almost 70–80% of the original.
  • To develop in house biogas and compost production techniques.
  • Women-based employment can be generated through waste recycling and reuse by promoting them to make artifacts from waste paper, plastic, old clothes, and metal pieces.
  • Regular workshops and various competitions need to be organized to synthesize awareness among the people about waste.

4.4. Comparative Studies of Other Campuses

There is no significant approach been used in term of SWM in the MNIT Jaipur campus. The waste is collected through the door to door service and disposed-off behind the campus [54]. The study conducted by the students of NIT Calicut, India for their campus shows 200 kg per day of organic waste produces 50 kg of biogas equivalent to 1.29 cylinder per day (weight of one LPG cylinder 19.2 kg) [55]. Another such study in the University of Tabriz, Iran has shown 80% of waste reduction within the campus by the production of compost and recyclables sent to respective recycling agencies directly from the campus [56]. The study of the campus in Kenya shows how knowledge, practices, awareness, and attitude towards waste need to be improvised to move towards the careful management of waste. The polices on the campus, which also inspires the competitive attitude and behavior can make changes in the waste management system [57]. A study conducted by Sreedevi S. in Hyderabad shows that color coded dustbins are the most basic ways of segregation of waste [58]. General awareness and careless attitude of the students and staff members towards waste management is a challenge, which further creates a filthy situation for the campus environment. A study conducted by a student of Master of Arts in Environmental Planning and Management, Department of Geography and Environmental Studies, University of Nairobi, Kenya has found that there is an urgent need of lawful and forceful implementation of the policies within the campus [59]. The educational campuses are adapting and becoming self-motivated towards zero waste concepts. Some good strategies have been shown by the institutes like Vivekananda Education Society Mumbai, in which 70kg/day of organic waste from the total waste is processed to produce 130 kg of compost and rest left out dry waste/inorganic waste is being segregated, collected and transported to authorized recycler out site the campus [60].

5. Conclusions

Though the per capita waste generation rates in India is lower than its counterparts in the world, it needs immediate attention due to its increasing rates each year. Developed countries have many efficient SWM systems with advanced technologies both at small scale and large scale. Campuses can act as an example to the cities for implementing SWM programs and achieving zero waste campus along with educating the occupants and neighborhoods. The SWM system of IIT Roorkee campus is unsystematic and inefficient. It lacks at many levels of execution and maintenance. Negligence and lack of awareness are some of the factors responsible for the same. A carefully chalked out system of waste segregation, collection, disposal, transport, recycling, etc. is essentially required to be able to upgrade the esteemed campus to a ‘zero-waste campus’. To achieve this goal, awareness must be spread regarding the reduction of waste production, reuse, sanitary habits and careful handling of waste, by inculcating the value of waste as a resource, into the minds of all. Educating the users, cleaning staff and management staff regarding the necessity of proper methods of separation of various kinds of waste at source is necessary. Apart from this ergonomic design of concrete bins and providing separate bins for recyclable, non-recyclable and biodegradable waste, new technologies for waste management on both on campus and off campus are required. The aim for ‘zero-waste campus’ should be achieved in steps by processing and disposing of all types of waste sequentially. As organic waste constitutes the highest quantity of the total waste generated on campus, it needs attention first. Construction of decomposing pits or decomposers available in the market could be used for decomposing organic and garden waste. This will reduce the cost of chemical fertilizers, and pollution and improve soil fertility. Another important target should be the recycling of the solid waste within the campus, thus saving energy and providing education to the students. The study will help in evolving a more contextualized SWM system for the Indian campus which in turn will help in boosting sustainable development in Higher Education Institutes. Also taking an example of this Indian campus, other campuses around the world with similar issues can learn from it and move forward along similar lines.

Author Contributions

Conceptualization, A.A. and N.P.; methodology, N.P.; software, N.P.; validation, N.P., A.A. and A.K.; formal analysis, N.P.; investigation, N.P.; resources, N.P. and A.K.; data curation, N.P. and A.A.; writing—original draft preparation, N.P.; writing—review and editing, N.P. and A.K.; visualization, N.P.; supervision, A.A.; project administration, A.A. and N.P.; funding acquisition, N.P. and A.K.

Funding

The authors would like to thank the Government of India’s Ministry of Human Resource Development for funding this manuscript through the IIT-Roorkee Institute Scholarship to the first and third author.

Acknowledgments

The authors express their sincere gratitude to the IITR campus for providing their support in conducting the case study. And also gratefully acknowledge the participation of its faculty staff and students in the interviews.

Conflicts of Interest

The authors declare that there is no conflict of interest.

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