Wednesday, June 30, 2010

Some thoughts on drawing pictures

I am very much fond of drawing figures and pictures and get tempted to draw some meaningful figure or portrait on paper, but very often I make mess of it and have to leave the effort within a short time. My hand cannot create what is in my mind. I thought over it and revealed some hard facts about drawing.
Though it is said that we should start from whole to part and from outline to details, one starts drawing the part which appeals him best, eyes in case of human face. However, one forgets that drawing eyes is most difficult part of drawing a face. Any small deviation changes the face completely. Similar is the shading aspect. If you can truly show shadows, the face gets lighted up automatically. Three dimensional objects can be shown by representing depth by shadow. Even ighted portion of the figure can be shown only by creating contrast shadow for other portion not in light.
One good sculpture once commented; “I do not create statue from the stone. It already exists there. What I do is removal of other unwanted material to expose it.” The point is that the three dimensional picture of statue is present I the mind of sculpture and he knows well what part to cut out from stone. One bad thing with stone sculpture is that you cannot undo the action and portion cut cannot be attached again. In painting you can play around to compensate any mistake in drawing.
One simple method of learning to draw is perhaps copy from existing drawing. This provides a constant guide for shadow, color and scale proportion and does not allow logic or imagination to interfere with exact replication. You can draw a graph on paper to guide you or can see the picture through transparent paper or glass with graph marked over it. I have seen one well known painter using epedioscope to reflect the image of picture on canvas drawing board to help him in painting.
Practice of drawing smooth curves and straight lines is prerequisite for memory drawing. Seeing the picture and then drawing it from memory can help to identify loss of details during memorization. Repetition of checking with original picture and modifying drawing can help in proper visual impression. Memorization, though ridiculed by modern education experts, is very helpful to create the background full of resources.
Abstract intricate combination of lines and shadows can prompt imagination to visualize meaningful objects stored in memory. Highly impressive and realistic pictures can be drawn by staring at clouds, curtains or color faded walls. Our imagination interprets the shapes and shadows into real life figures and scenes. These figures suggest relevant distinctive part of image in perception and can become guide to draw novel and imaginary pictures, which are based on our memory experiences.
Modern Painting – It is one of the most controvertial but equally respected form of painting. Picasso evolved it to describe his feelings and impressions in a symbolic way. I feel that it provides the viewers the background like that which is felt while seeing clouds or intricate designs. Some suggestion is needed to grasp the meaning of image in the mind of creator. Hence suitable name is generally given to modern art picture. Pictures drawn by famous painters also creates stimulus to imagination of the viewer even if name is missing. But, in such a case, the theme assumed by viewer may be entirely different than than the painter had in his mind.
One painter had drawn a series of pictures on a theme of Indian widow with white saree. A foreigner got very much impressed with the pictures and exclaimed “ What a good theme of Gandhi !” He had in his memory the picture of Gandhi in white cladding. The painter was shocked with the interpretation but did not say anything. The foreigner purchased the collection thinking it as of Gandhi. May be if he exhibits the pictures without giving explicit name, some viewers may think it of ‘widow’ the real theme. Thus the picture conveys different meanings to different viewers depending on their experience.
One person approached a psychiatric and asked him to examine if he has any phobia. The doctor showed him one rectangle and asked ‘what is it?’ the person replied ‘it is plan of house’. Doctor showed triangle and asked to explain. The person answered ‘It is roof of house’. Doctor showed one small dot, to it person said ‘It is house as seen from high altitude’. The doctor concluded and told the person ‘You have phobia of house’. The person started laughing. He said ‘ It is not me but you. You have a phobia of house. That is why you are showing me house in different forms and asking me to explain.’ Leaving the lighter part of the story, it indicates how man forms perceptions and ignores other viewpoints.
There are different styles of paintings which do not depend on individual painter but method of showing details in a peculiar way, not necessarily realistic but giving prominence to particular details. Rajasthani, Mughal, Varli and many such styles are famous. For example, eyes on faces, flowers and fruits are shown out of proportion to indicate their importance in such drawings.
It is said that the good painting should depict not the realistic scene but the overall impression of it formed in the mind of painter. It then becomes true medium of communication between painter and viewers.
Painting, a creation by painter, is called as ‘Frozen Music’ and should give the pleasure like music composed by a good singer.

Sunday, June 13, 2010

Let us plan for .. Intelligent Green Buildings of Tomorrow

ABSTRACT :
Adoption of Green Building Technology has become mandatory for ensuring sustainable development. However, its wide acceptance would require critical examination of various aspects like energy conservation, cost, strength and durability. Use of modern electronic controls and smart devices can enhance the functionality and performance of green building. Architects should get equipped with technical know-how for planning and designing intelligent green buildings to meet the future needs.
Need of Green Concept
Increasing urbanization has given a boost to building industry and number of bungalows, building complexes and multi-storied buildings are being designed by architects and engineers with innovative concepts and enhanced features. However, it is observed that in many cases, environmental aspects are ignored leading to uncomfortable habitat and increased maintenance and energy requirements. Green building concept needs to be realized by all concerned with building activity and studied in detail by designers and planners for better built environment.

Green or eco-friendly building is often considered as the luxury of wealthy people which is not correct. In fact, it is the necessity of common middle class man who cannot afford to provide air conditioning or pay exorbitant electricity bills. Beautiful landscape, greenery, gardens, soft lighting and high profile architecture with modern interiors is often mistaken to be the ideal house. Green building, on the other hand uses natural materials, utilizes natural ventilation and lighting and achieves energy conservation. Still the majority of buildings lack these features mainly because the builders generally give preference to appearance, economy of space and use of exotic materials. Owners and residents of buildings also realize the lack of comfort and high energy and maintenance requirements only after occupation of buildings.

Critical Appraisal of Green Technology

Green Technology is mandatory for ensuring sustainable development. However, in spite of all out awareness campaigns and promotional efforts, the adoption of this technology has remained marginal and restricted to environmentally conscious or wealthy people with main motive of value addition rather than economy and energy conservation.

In case of building industry, the green tagging of building enhances the value and supercedes other non-green competitors in attracting customers. The cost aspect of green building and loss of other functional requirements like security and durability are often concealed by green builders leading to a failure in convincing common man to adopt green building design. If we really wish to propagate the merits of green building, we must face the inconvenient questions of economy, security and strength put forward by traditional building practitioners and come up with solutions to make green building acceptable to all. It is necessary to examine every aspect of green building design in the light of its counterpart in traditional construction methods and evaluate the costs and benefits in totality. If such a scrutiny reveals superiority of green building, then only it can replace the traditional construction practice.

The main functions of the building are
1. To give shelter from environmental factors like Sun’s heat, rain, wind and extreme vagaries of nature like flood and hurricanes.
2. Provide security to life and property.
3. Provide privacy.
4. Durability and Strength.
5. Aesthetic beauty
6. Comfortable living

Civil engineering considers strength, durability and cost as the main criteria while selecting materials, planning and construction. Architecture gives more stress on aesthetics and comfort and pays attention to fulfilling psychological needs of occupants. Green building techniques seek to conserve and utilize natural resources, emphasize eco-friendly construction and think of minimum carbon footprint on global scale. Though all these approaches are justifiable in their own sense, choice of the material, construction method or type of building are governed mainly by economical and space considerations.

Integration of IT and Green Technology
Green building is need of tomorrow’s future and old methods of construction and use of natural materials though more eco-friendly cannot provide for the needs of tomorrow like space economy, security, modern gadgets and amenities and flexibility in energy management. Fortunately advances in IT and automation controls can make the green building intelligent providing security, energy conservation and weather responsive automated operations. Use of solar energy, LED lighting, Rainwater harvesting, preservation of indoor air quality and thermal comfort zone and waste minimization can be made highly effective and economical through sensor based controls and appliances. Intelligent buildings can protect and enhance the environment and adopt to the changing needs of the environment. Considering the high cost of energy and the need to preserve nature, intelligent buildings are increasingly becoming a necessity today.

Panorama of smart home appliances

Numerous smart control devices are available in market which can be deployed easily for ensuring security, comfort and for energy and water conservation. Restricted access control, intruder alarm, dimmer light controls, bluetooth, Wi-Fi and/or net enabled smart devices, smoke detector, sensor based plumbing fixtures, automatic controls for opening and closing of venetian shutters or blinds etc. Siemens, Tata Honeywell and ABB are some of the world’s largest producers of such controllers.

Coupled with it, there are variety of innovative products like wind powered fans, waterless urinals, dual flush latrines, Light tubes, LED lighting systems which can help in achieving green objectives.

Intelligent design suggests architecture whose enclosures, partitions, lighting, environmental systems, spatial characteristics and qualities can adapt to environmental dynamic situations. When the occupant or guest leaves the room, all electric gadgets are turned off, while the air condition turns to ‘low’.

Intelligent Green Buildings of Tomorrow

Energy, buildings, and the environment are interlinked in a symbiotic relationship, and the results of this interaction can be optimized for maximum gains by convergence of Green and Intelligent building concepts.

An intelligent building is one in which the building fabric, space, services and information systems can respond in an efficient manner to the initial and changing demands of the owner, the occupier and be in harmony with the environment. Intelligent buildings not only have energy efficiency but also have safety and telecommunications systems and other required automations propelled by innovations. Intelligent buildings are designed to increase efficiency of lighting, monitoring, safety & security, emergency systems, HVAC, door and window operations, guest registration and many more facets.

An intelligent building system concept recognizes that the true cost of the building is not its cost of construction; it must include the operating and maintenance costs over the structure’s life span. Intelligent buildings yield cost reductions over all these areas by optimizing energy use through automated control, communication and management systems. They also guard against repair costs, employee time, productivity loss, revenue loss and the loss of customers to competitors. The building can be viewed as a source of power and automation systems can execute new strategies to shift load and take pressure off of peak demand time.

Automation technology can be used to help utilities control and shift the demand for power at critical times and such automatic balancing of energy load over group of buildings can achieve significant reduction in energy demand. Smart buildings use energy in a clean and efficient way thus becoming green buildings. Though it is not in complete synchronization with the USGB’s LEED definition of green buildings, but in the larger context of energy and the environment, building intelligence may be more critical in future than many other factors.

Design of Intelligent Green Building
The ability to perform accurate whole building energy, water, and carbon emission analysis early during the design phase is essential for green building design. Simulating a building's energy use is a hard problem, requiring not only a model of the building and the materials that make it up but also a model of the building's location, with the path of the sun through the year and weather data that is accurate and detailed, including humidity, wind, simple daytime-nighttime temperatures, and a host of other location specific parameters.

There are many modeling and simulation tools for design of green building

1. Simplified Whole Building Energy simulation tools include: ASEAM, Carrier HAP, Energy-10 and TRACE 600.
2. Detailed simulation tools include: BLAST, DOE-2, ESP-r.
3. Lighting and Day lighting Simulation - ADELINE, RADIANCE, SUPERLITE
4. Solar System Simulation - TRNSYS
5. Ecotect is a whole-building simulator that combines an interactive building design interface and 3D modeller with a wide range of environmental analysis tools for a detailed assessment of solar, thermal, lighting, shadows & shading design, energy & building regulations, acoustics, air flow, cost & resource performance of buildings at any scale. It can be used as plugin in Autocad.
6. A computable Revit design model is a great fit for the analyses needed for sustainable design — even during schematic design. As soon as the layout of a building's walls, windows, roofs, floors, and interior are established, a Revit model can do whole building analyses.
7. Green Building Studio Web service meet ASHRAE Standard 140 and is certified by the U.S. Department of Energy. Built specifically for architects and using gbXML for data exchange across the Internet, the GBSWeb service can be used for building designs and sophisticated energy analysis.

Selection of a simulation program should consider the project requirements, time and cost, availability of computer system and experience of the user. Once the building completed and people use it, it should be monitored for the actual performance. Various sensors have to be used for such monitoring. This is called commissioning, and is crucial to the green building industry. Data from commissioning should be fed back into simulation programs, to make their models more accurate and complete.

Role of Green Architects
The architects should learn the basic concepts of green and eco-friendly building and make appropriate changes in methods and materials they are using for the building design. In order to achieve desired green rating, they should use modeling and simulation tools after necessary customization to suit client’s specific requirements and site constraints.
It is also necessary for the architects to get up to date knowledge of the modern electronic control systems that can be incorporated in the green building at design stage to enhance its utility, functionality and flexibility to respond to the changing environment and meet location specific requirements.

Role of Dnyandeep
Dnyandeep Education & Research Foundation has launched a website www.green-tech.biz to act as an effective medium for creating awareness about environmental protection and for popularization of green building/green city concept. The website includes all technical papers presented in the earlier workshops and seminars on this topic. It is proposed to have networking of architects and builders for information exchange and transfer of technical know-how.

The foundation is planning to provide all necessary guidance and training to architect members with the help of experts in Green Building Design, IT, Instrumentation and Control though this website.

Let us hope that with active participation from all concerned we will be able to usher a new era of intelligent green buildings affordable to all in future.

Business Opportunities in Green Energy Sector

Abstract
There is global awareness about the need of reducing carbon footprint and use of non conventional energy sources. India has ample solar energy potential, numerous sites for harvesting wind energy, vast length of sea coast for tapping tidal energy, huge quantities of agro-wastes and nuclear energy capability. Still, there is very slow progress in wide scale application and adoption of these energy alternatives due to higher initial capital requirements and lack of mass scale education about the payback calculations and overall economics.

Generally large scale investments are necessary for research, pilot plant studies and commercialization of techno-economically viable projects. The investors need to be educated about the future business opportunities that exist in these projects.

Multimedia Communication channels like TV and internet should be employed for creating mass awareness. Web technology with video conferencing, actual visits and technical workshops should be arranged for prospective investors from industry and financial institutions. Dnyandeep Foundation has organized number of workshops, launched website and started green-tech yahoo group to boost these activities. The paper highlights the efforts being made worldwide in this direction, lists the business opportunities in manufacture of green technology items and suggests the action plan for speeding implementation of alternative technology in India.
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Introduction
Climate change is a threat to mankind. The earth's average surface temperature has increased by 0.3-0.6 0C since the end of the 19th century. Such increase in temperature may seem to be minimal to us but they can lead to a disaster There is global awareness about the need of reducing carbon footprint and use of non conventional energy sources. All countries have undertaken ambitious programs to reduce carbon emissions and are investing heavily in green products and processes.

India has many strategic advantages for becoming a world leader in this activity. It has ample solar energy potential, numerous sites for harvesting wind energy, vast length of sea coast for tapping tidal energy, huge quantities of agro-wastes and nuclear energy capability. More important than the natural resources, it has a large pool of skilled human resource which can develop new economical and efficient technologies for harnessing natural resources to meet energy needs of India.

India is the only country in the world to have a dedicated Ministry of Non-conventional Energy Sources (MNES). It has planned to achieve 10% of total capacity addition in the present capacity of 8,000 MW through renewable sources by 2012. To achieve this target, India has initiated many favorable policy instruments to support renewable energy technologies.

India's Central Electricity Regulatory Commission (CERC) has announced new system of feed-in tariffs for renewable energy, including both wind and solar energy. CERC has focused on setting preferential tariffs for the period of debt repayment while maintaining an "adequate IRR" or internal rate of return. The regulations says that the discount rate used in determining the tariff will be the average weighted cost of capital. Further, the tariff, defined as the levelized cost of energy, is derived from the specific "useful life" of each technology.

Even after the launch of various schemes by government to boost use of non-conventional energy sources, still there is very slow progress in wide scale application and adoption of these energy alternatives due to higher initial capital requirements and lack of mass scale education about the payback calculations and overall economics.

Potential and Achievements in Renewable Energy Applications

Sources/Systems Potential Cumulative Installed Capacity
(31.3 .2006)
Wind Power 45,000 5310.4
Bio-Power (Agri residues and
Plantations) 61,000 46.53
Co-generation Baggasse 5 ,000 867
Small Hydro (up to 25 MW) 15,000 1826.43
Waste to Energy 7 ,000 34.95
Solar Photovoltaics 20 MW per sq. km. 2 .74
Total 8088.05
New Technological Advances

Some of the new technological advances and initiatives in green technology sector on the global scale can be listed as follow.

1. Solar cells could soon be produced more cheaply using nanoparticle "inks". These nanoparticles can help in printing solar cells like newspaper or painted onto the sides of buildings or rooftops to absorb electricity-producing sunlight.

2. First algae fuel-powered vehicle in the world was officially launched in San Francisco. The car, called Algaeus is a modified Toyota Prius, which derives power from green crude, from Sapphire Energy. The car runs on an astonishing 150 miles per gallon of green fuel.

3. Germany to Launch Nationwide Hydrogen Fuel Network by 2015

4. Using a carbon nanotube instead of traditional silicon, researchers have created the basic elements of a solar cell that hopefully will lead to much more efficient ways of converting light to electricity than now used in calculators and on rooftops.

5. The flowing waters in the rivers and tidal waves can be a good source of alternative energy.

6. Offshore wind turbines can be used to harness windpower on Indian coastline

7. China is going to build the world's largest plant in with an estimated project completion time of 2019. The plant will be built in Inner Mongolia and the first phase of construction will start on June 1 2010 and cover 25 square miles. The giant complex will be producing 2000 megawatts of power!

Indian Scenario
a) Research & Development Areas
1. Non conventional energy sources
2. Innovative green products
3. Development of waste recycling and reuse techniques

b) Business opportunities in Manufacturing
1. Production of eco-friendly building materials.
2. Reuse of foundry sand in concrete
3. Use of Flyash in bricks and concrete blocks
4. Different interior decoration products of natural materials like Bamboo, Jute, Coconut fibres
5. Sensor based water and energy saving devices
6. Production of solar concentrators

Generally large scale investments are necessary for research, pilot plant studies and commercialization of techno-economically viable projects. The investors need to be educated about the future business opportunities that exist in these projects. Multimedia Communication channels like TV and internet should be employed for creating mass awareness. Web technology with video conferencing, actual visits and technical workshops should be arranged for prospective investors from industry and financial institutions.

Dnyandeep Foundation’s Initiative - Green-Tech

Green-Tech is a membership supported special project division of Dnyandeep Education & Research Foundation whose mission is to promote green technology in India. The foundation had launched two websites www.envis.org and green city portal. It has also conducted number of seminars on green building at various places in Maharashtra, latest being Green-Tech 2009 at Shivaji University in Feb. 2009. During the discussions with delegates of green building seminars it was revealed that there is lack of communication between green product manufacturers and user community of professionals. Latest technical knowledge and new innovative green products as well as ingenious products are difficult to locate and procure.

To bridge this gap and enhance information exchange for implementation of Green Building Objectives, Dnyandeep Foundation has launched green-tech yahoo group and plans to develop Green-Tech portal website to provide networking and e-commerce facilities for green products and processes.

1. Green Product Directory
The Green Product Directory shall provide an extensive listing of green products and technologies available in India. This Directory shall provide a reliable tool for building professionals and the general public to conveniently locate suppliers and service providers of green building products, ranging from foundation and framing materials to finishing touches.

This will help in showcasing new products to community, searching and comparing green products and will facilitate sale and purchase.

2. Professionals Directory

Membership
Green-Tech offers annual membership for students, Teachers, Professionals and Organizations in the field of Engineering and Green Building Industry.

Member Benefits:
Directory listing with Members page on Green-Tech website
A platform for members to network and share common interests
Access to research on issues related to sustainable development.

Summary
Great opportunities exist for development of Green business in India. Web technology can effective provide platform for creating awareness, imparting education and an interactive effective mechanism for boosting and monitoring the growth of business in Green Technology sector.

Thursday, June 10, 2010

सोलापूरचा सांडपाणी प्रक्रिया आणि पुनर्वापर प्रकल्प

सोलापूरसाठी जलव्यवस्थापन
पाण्याचा दर्जा व उपलब्धता या दोन्ही गोष्टी शहराच्या व उद्योगांच्या विकासासाठी आवश्यक असतात. सोलापूर महानगराची वाढ झपाट्याने होत आहे. मात्र या वाढीसाठी लागणार्‍या पाण्याच्या स्रोतांचे योग्य व्यवस्थापन झाले नाही तर भविष्यात पाण्याची तीव्र टंचाई निर्माण होऊन शहराचा विकास अशक्य होईल. उपल्ब्ध पाण्याच्या स्रोतांचे संरक्षण, भूजल संवर्धन, पर्जन्य जल संकलन, सांडपाण्यावर प्रक्रिया करून त्याचा पुनर्वापर, पाणी पुरवठा वितरणातील गळती कमी करणे इत्यादी योजना त्वरित हाती घेणे गरजेचे आहे. यासंदर्भात सोलापूर महानगरपालिकेने एक अभिनव प्रकल्प हाती घेतला आहे.

सांडपाणी प्रक्रिया आणि पुनर्वापर प्रकल्प

सोलापूर शहराला जोडूनच असलेल्या आहेरवाडी परिसरात केंद्र सरकारच्या ऊर्जा मंत्रालयातर्फे औष्णिक ऊर्जा प्रकल्प सुरू होत आहे. या ऊर्जा प्रकल्पासाठी लागणारी पाण्याची गरज ओळखून सोलापूर महानगरपालिकेने सांडपाणी शुद्धीकरण व पुनर्वापराची योजना हाती घेतली आहे. ह्या प्रकल्पाची उभारणी व प्रकल्प चालविण्याचे काम वाबाग या आंतरराष्ट्रीय कंपनीस बीओटी तत्वावर देण्यात आले आहे.

दररोज ७५ दशलक्ष लिटर सांडपाणी शुद्धिकरणाची यंत्रणा उभारून पंचवीस वर्षे ती स्वखर्चाने चालविणे व शुद्ध केलेले पाणी महापालिकेस एका विशिष्ट दराने विकत देणे असे प्रकल्पाचे स्वरूप आहे. या पाण्याचा दर्जा नियोजित नॅशनल थर्मल पॉवर प्लँटसाठी सुयोग्य ठरावा अशी त्यात अट असून हे पाणी महापालिका पुन्हा योग्य दराने नॅशनल थर्मल पॉवर प्लँटला विकणार आहे. प्रदूषण नियंत्रण व औद्योगिक वापरासाठी पाणीपुरवठा या दोन्ही गोष्टी यात साधल्या जाणार असून महापालिकेवर यासाठी कोणताही आर्थिक बोजा पडणार नाही.

या प्रकल्पासाठी आलेल्या निविदांचॆ शास्त्रीय मूल्यमापन करण्याच्या समितीवर विषय तज्ज्ञ म्हणून माझी तसेच प्रा. जी. के. देशमुख व प्रा. घाईतिडक यांची नेमणूक झाली होती. त्यामुळे या सोलापूर महानगरपालिकेने तयार केलेल्या बीओटी प्रस्तावाच्या अटी, निविदा भरणार्‍या कंपन्यांनी सादर केलेले विविध शुद्धीकरण पर्याय व प्रकल्पाची योग्य अंमलबजावणी होण्यात येऊ शकणार्‍या संभाव्य अडचणी याचा साकल्याने विचार करण्याची संधी मिळाली.

या विषयी महापालिका अधिकारी व प्रस्ताव सादर करणार्‍या तज्ज्ञांशी झालेल्या चर्चेतून या प्रकल्पाविषयी काही मुद्दे उपस्थित झाले त्याविषयीची माहिती सर्वांना व्हावी व त्या अनुषंगाने असे प्रकल्प यशस्वी होण्यासाठी कोणती काळजी घेतली पाहिजे याविषयी माझे विचार व्यक्त करीत आहे.

प्रकल्प मूल्यमापन व सूचना
१. सोलापूर महानगरपालिकेने तयार केलेल्या बीओटी प्रस्तावात निविदा भरणार्‍या कंपन्यांसाठी पात्रता अटी कडक होत्या. गेल्या तीन वर्षांत किमान १०० कोटी रुपये उलाढाल व स्थावर मालमत्ता ५० कोटींपेक्षा जास्त असणे यासाठी बंधनकारक होते. तसेच किमान दोन सांडपाणी प्रक्रिया प्रकल्प उभारून तीन वर्षे चालविण्याचा भारतातील अनुभव आवश्यक होता. या अटींमुळे कोणत्याही नव्या वा छोट्या कंपन्यांना यात सहभागी होता आले नाही. भारतातील दोन व आंतरराष्ट्रीय स्तरावरील दोन कंपन्यांनी निविदा सादर केल्या.

२. सांडपाण्याचा गुणवत्ता दर्जा व प्रवाहमात्रा सतत बदत असते. दिवसभरातील पाण्याचा वापर व ऋतूमुळेही सांडपाण्याच्या प्रवाहात व दर्जात बदल होतो. म्हणून डिझाईनसाठी केंद्रीय प्रदूषण नियंत्रण मंडळाने भारतीय शहरांतील सांडपाण्याचा दर्जा व प्रवाह मात्रांचे सरासरी आकडे व महत्तमचे सरासरीशी असणारे प्रमाण गृहीत धरणे अधिक योग्य झाले असते. सोलापूर महानगरपालिकेने सांडपाण्याचा गुणवत्ता दर्जा व प्रवाहमात्रा दिल्याने निविदा भरणार्‍या कंपन्यांनी यासंदर्भात वेगवेगळी गृहिते मानून डिझाईनचे खर्चाचे अंदाज केले होते.

३. शहरातील सांडपाण्यामध्ये औद्योगिक सांडपाण्याचा समावेश असणार नाही असे आश्वासन दिले असल्याने अशा सांडपाण्याच्या वेगळ्या विल्हेवाटीविषयी औद्योगिक आस्थापनांवर निर्बंध घालणे आवश्य आहे. महाराष्ट्र प्रदूषण नियंत्रण मंडळाकडून नाहरकत प्रमाणपत्र मिळविण्याची जबाबदारी महापालिकेने घेतल्याने या प्रकल्पामुळे केव्हाही व कोणतेही प्रदूषण होणार नाही याची खबरदारी महापालिकेस घ्यावी लागणार आहे.

४. शुद्धीकरणासाठी एरोबिक सस्पेंडेड ग्रोथ या एकाच पद्धतीचे बंधन घातल्याने अन्य कमी ऊर्जा लागणार्‍या पर्यायांचा प्रस्तावात समावेश होऊ शकला नाही. याऎवजी शुद्ध केलेल्या पाण्याचा दर्जा एवढाच मापदंड ठेऊन प्रक्रिया निवडीचे स्वातंत्र्य देता आले असते.

५. बीओटी ची मुदत २५ वर्षे एवढी प्रदीर्घ ठेवल्याने मधल्या काळात तंत्रज्ञानातील सुधारणांचा फायदा घेऊन प्रक्रिया पद्धत बदलण्याची वा बीओटी अटींबाबत फेरआढावा घेण्याची लवचिकता नसल्याने भविष्यात काही अडचणी उद्‌भवू शकतात.

६. औष्णिक ऊर्जा प्रकल्पास देण्यात येणार्‍या पाण्याचा दर्जा व विना खंड ठराविक पाणीपुरवठ्याची निश्चिती या गोष्टी पाळल्या तरच औष्णिक ऊर्जा प्रकल्प पाणी खरेदी करेल. त्यांच्याशी करार करताना प्रक्रियेतील त्रुटींमुळे महापालिकेस कोणतीही अडचण येणार नाही वा आर्थिक झळ बसणार नाही व त्यासबंधीची सर्व जबाबदारी प्रक्रिया कारकावर राहील याचा स्पष्ट उल्लेख व त्यास प्रक्रियाकारकाची संमती असणे आवश्यक आहे.२५ वर्षे हे पाणी विकत घेण्याची हमी औष्णिक केंद्राकडून घ्यावी लागेल.

७. बीओटीवर आधारित प्रकल्पासाठी प्रस्तावित झालेल्या डिझाईन व पर्यायांविषयी गोपनीयता नियम असल्याने त्याविषयी काहीही भाष्य करता येत नाही. सार्वजनिक क्षेत्रातील अशा प्रकल्पांसाठी पूर्ण पारदर्शकता असणे व खुली चर्चा घडवून सूचना व सुधारणा यांचा समावेश करूनच तांत्रिक प्रकल्पाची आखणी करणे गरजेचे आहे असे वाटते. एकूणच बीओटी तत्वावर प्रकल्प नियम करतानाच प्रकल्पाच्या तंत्रज्ञानाशी संबंधित तज्ञांचा व अनुभवी व्यावसायिकांचा सल्ला घेतल्यास आधुनिक तंत्रज्ञान व परिणामकारक कार्यपद्धतींचा समावेश करणे, प्रकल्पाची उपयुक्तता व विश्वासार्हता वाढविणे व आर्थिक दृष्ट्या योग्य पर्यायाची निवड करणे शक्य होईल.

हा प्रकल्प योग्य पद्धतीने चालावा यासाठी महापालिका, ठेकेदार व पाणी विकत घेणारी यंत्रणा यात समन्वय असणे जसे आवश्यक आहे तसेच प्रकल्प कार्यान्वित होईपर्यंत या प्रकल्पाच्या तांत्रिक, आर्थिक व कायदेशीर बाबींविषयी महापालिकेस सल्ला देण्यासाठी वेगळी समिती नेमण्याची गरज आहे. सांडपाणी प्रक्रिया व पुनर्वापर हा प्रकल्प इतर शहरांसाठी पथदर्शक ठरणार असल्याने तो यशस्वी होण्यासाठी सर्व घटकांनी परस्पर सहकार्य करून आपले योगदान दिले पाहिजे.