Blog

Each roof is a potential resource to let the rain fall on it and capture through a rainwater pipe for later usage. Rain is pure form of water but when it falls on the roof it carries impurities which are lying on the roof. Depending upon the type of geographical area, impurities like leaves, paper, plastic, dust, silt, debris etc. are normally present on roof. Most of our habitats don't use this water as they don't have right equipment to filter out impurities, and mostly rainwater goes down the drains or flows on road that creates water logging.

It is essential to remove these impurities in order to use this water for any application. If we can filter out impurities right from the pipe end, we can get clean water in our tank or well as a resource.

Rain is fresh source of water. When it falls on the roof, the impurities present on the roof flows along with water. Since the Rain doesn't have any time table, it may fall mid night, early morning or during odd hours of the day, it is cumbersome and tedious for one to clean the roof every time when there is a rainfall. And practically it is not possible to clean during night.

We can't avoid the impurities on roof but can always remove these impurities by using NeeRain rooftop rainwater filter. NeeRain rainwater filter is thoughtfully designed simple, scientific and sensible rooftop rainwater filter system to remove physical impurities online from rooftop rainwater.

Rain is fresh and soft water available at no cost. We get millions of litres of water every year across the world. Rain is the fundamental source of water that helps raise water level in all our existing sources of water. Rivers, Dams, Lakes get filled and even aquifer below get rainwater through natural process of percolation. Rainwater in the natural form is the form of water which is soft in nature and doesn't contain any impurity. Rainwater if captured, collected, filtered and stored, is the best way to avert crisis of water. Rainfall on roof, surface,river,garden, loose soil, paved areas is fresh source of water if not collected it flows and creates water logging or flooding that results in death of thousands of lives, damage to crops, prospeities, homes and animals. It is time to understand the resource in modern context. We need to fill the gap between water scaricity and flooding. It is the most sensible thing to do in today's context. More over rainwater which is allowed to flow in oceans is not a good sign; fresh water then becomes saline water which is good for nothing.

Our new habitats, satellite colonies, integrated townships, industries, institutions etc. are developing mostly in outskirts of main cities; not connected with municipal water grid. These habitats depend only on ground waterthrough bore wells.

A decentralised approach to make these habitats water sufficient, is harvesting at a point of usage. "Catch the rain where it falls and go closer to it's resource". Rooftop rainwater harvesting in the most efficient, effective and economical manner is the first step towards being water secure for a better tomorrow.

Amritsar based research institute, namely, Guru Arjan Dev Institute of Development Studies, added another feather to her cap. Today institute released its second annual publication of the year. The book entitled India’s Water Crisis: Time for a Rethink is authored by the renowned agricultural economist and Director General of the institute Dr Gursharan Singh Kainth. The book with 9781646617852 as ISBN  is published by Xpress Publishing – an imprint of Notion Press.

Earlier book entitled Recycling of waste water and reuse system published by Bharati Publication, New Delhi was released by the institute. Three books are entitled Education for Sustainable Development; Technology led Financial Inclusion and Elementary Education: Needs Renewed Push are likely to be released by the institute before the end of current year.

Water poised itself the centre if civilization since time immemorial. The limited amount of useable water on this plant is becoming scarcer with growing industrialization, population exploitation and irrational use. This captivating book “India’s Water Crisis: Task Ahead” takes readers through insights of water management required for sustenance of humanity and analysis of sustainable development in the context of Indian water resources. It brings together the information on the technological advances in water management.

There is well known adage – Waste not, Want not. The book added, Waste not the Waste and do not untouch an untouchable.  Giving human touch to technology has never harmed anyone.

Sh  G Nageswara Rao Chairman Atomic Energy Regulatory Board Mumbai in his forward to the book added that the book would be very beneficial towards spreading awareness on the crucial aspects of water management required for sustenance of humanity. It provides the statistics and brings together the information on the technological advances in water management.  It will be very good reference to the key stakeholders as well as academicians and research scholars.  The wide range of topics covered is a testimony to the dedication and commitment of the author to the nation.

 8222_cover_0902736001567072909.pdf

Hi,

Environmental governance in India has been undergoing a major
overhaul. In order to track release of pollutants through air
emissions and effluent discharge from industries with high pollution
potential, Central Pollution Control Board (CPCB) introduced online
Continuous Emission Monitoring Systems (OCEMS), a real-time air and
water pollution monitoring system vide its letter dated 05.02.2014.
Continuous monitoring of emissions and effluents from the discharge
points of industrial units. The analysers are installed on stacks or
chimneys and at the outlets of Effluent Treatment Plants and Sewage
Treatment Plants. The analysers continuously generate data at
intervals of one second to few minutes. Read More

Please do share your valuable comments and suggestions.

Warm regards,

S K Mishra

sanjayakmishra@gmail.com

Twitter: @sanjayakmishra

Get a complete Wastewater Treatment Plant Design for Conventional Activated Sludge in a few hours.  

There are two simple steps to get your customized design, enter 

1- Input the basics of a project.   
The design generator checks your data based on extensive regional databases and process validation algorithms.

2- The Design Generator creates a complete basic engineering design package for a Conventional Activated Sludge (CAS) treatment plant. It uses your data to generate simulations, sizing, and rendering

Get your free WWTP design - here. 

Can someone help me on following statement..its urgent

How much land required for irrigation with treated wastewaster, when the soil is

(i) Sandy & Loamy

(ii) Loamy & Clayey

(iii) Clayey.

Any IS code on this regard, pl provide the information or link.

regards

Harpal Singh

Hydrogels are hydrophilic cross-linked polymer chains.

They are formed through physical, ionic or covalent interactions.

Due to hydrophilicity, they have the ability to absorb water and swell growing in weight and size.

Depending on the hydrogel type they can absorb and hold up to even 1500 of their weight. Similarly, they can release this water.

The speed of water absorption depends on the type of the hydrogel. Some of the synthetic polymers can take up to 6 hours to swell to complete hydration while natural ones may require only 2 h.  

The volume transitions – absorbing and releasing water may depend on the external stimuli which can be physical (temperature, electric or magnetic field, light, pressure, and sound) or chemical (pH, solvent composition, ionic strength, and molecular species).

Hydrogels have various applications: in agriculture, drug delivery, coal dewatering, food additives, tissue engineering…

Hydrogels are extremely useful in agriculture since they can save water and prevent land erosion.

They prevent the soil from being washed away and hydrate it, helping it retain moisture and increase the water-holding capacity. This makes plants survive for longer periods in drought or require less frequent irrigation.

Frequent and intense irrigation can damage the soil making it erode, form crust or harden. The hydrogel gives soil stability, increases permeability and enables better plant growth.

Adding hydrogels to the surface of the soil increases the soil water-holding capacity and the rainfall percolates the soil quite easily. 

Not only this, but they reduce the need of fertilization, since the nutrient loss is prevented by reducing runoff.

Alternatively, some hydrogels are made as fertilizers and even have controlled water release so that the dose of the fertilizer is adjustable in time. The nutrient is available for the plant over a longer period of time rather than a rapid availability that ammonium nitrate, ammonium phosphate or potassium chloride provide.

The controlled or slow release of fertilizers from hydrogels do not have official differences. They are achieved by coating or encapsulating the conventional soluble fertilizers. The coatings can be water insoluble, semi permeable or impermeable with pores.

The same principles apply to pesticides and herbicides.

The use of hydrogels is extremely beneficial in cases where post plantation irrigation is limited.

Water release is controlled so that the fertilizer is released according to plants’ needs.

Hydrogels can be made of:

• synthetic polymers
• natural polymers
• combination of natural and synthetic polymers.

The synthetic polymers are mechanically stronger and durable and can absorb more water. They can, therefore be more efficient in agriculture as they hold more water and lost longer.

On the other hand, hydrogels made from natural polymers are biodegradable and often do not leave any bi-products so they are more environmentally friendly.

Drying out before the next hydration makes the hydrogels less efficient so good irrigation is a necessity for the maximum effect.

It is noticed that in saline soil the hydrogels have lower efficiency. 

Hydrogels can be applied by being mixed with the soil or by spraying. 

Read more of my content - here.

Numerous incidents of pipeline leakage induced contamination reported across India. Corrosion of pipeline assets is the major cause for this tremendous leakage and contamination threats. This is completely ignored by the water management authorities and design houses. When leakage occurs in any pipeline, the immediate focus is made on replacing the existing infrastructure. It is not an easy task for replacing all old infrastructure with brand new systems. We need to find the best way of improving the current operation to minimize leak and contamination incidents. We need to turn Water Rust to Water TRUST for assuring the integrity of existing assets and operating the water distribution without any potential disturbance. There is not much focus made on corrosion control and life cycle approach of selecting the appropriate water distribution systems.

Article Source: http://www.corrosionfootprint.org/2015/03/india-water-rust-to-water-trust-our.html

A regional capacity development workshop on ‘Ensuring Water Security in

Changing Environment Scenario for Water Professionals of South Asian
Countries’ sponsored by UNESCO is being organized jointly by IIT Bombay,
NIH Bhoplal Regional Centre and NIT Hamirpur on November 26-27, 2015. The
venue for the workshop will be the Conference Hall, Victor Menezes
Convention Centre, IIT Bombay, Powai, Mumbai.

Please find enclosed brochure and registration form for the workshop. Your
are invited to attend the workshop.

Brochure%20and%20Registration%20form%20Combined.pdf

For registering online, please read the brochure and follow instructions.
Once you have online reference number or UTR number ready, kindly visit
the following link:

 http://tinyurl.com/Registration-UNESCO-Workshop

Also, you are requested to forward invitation to your colleagues and
friends who might be interested in attending the Workshop.

Thanks and best regards

Prof. A.K. Dikshit
Chairman, UNESCO-Workshop


--
Dr. A.K. Dikshit
Professor, Centre for Environmental Science and Engineering (CESE) Indian
Institute of Technology Bombay
Powai Mumbai 400 076 India.
Tel: (022)-2576-7862(O)/ 2576-8862(R)
Fax: (022)-2576-4650 / 2572-3480
Email:dikshit@iitb.ac.in

You can read water related articles on The Water Network powered by AquaSPE.

Article from different field like desalination, water purification technology, water and sanitation to agriculture themes.

Explore more here www.thewaternetwork.com

--------

Article Source: http://timesofindia.indiatimes.com/City/Guwahati/Schoolkids-on-Guwahati-fringes-drink-acidic-water/articleshow/34410148.cms

GUWAHATI: In an alarming find, the state public health and engineering department (PHED) and an NGO said schoolchildren in the tribal belt along the outskirts of the city have been consuming water, which is highly acidic in nature and unfit for drinking. The source of the water for these children is a well.

A little over five per cent of the samples were found to contain iron above the permissible limit of 0.3 mg/l. The survey pointed out that long time consumption of water with a high concentration of iron could lead to liver diseases. The test was conducted to ascertain the availability of pure drinking water to the students in the Rani-Deepor Beel-Gorchuk belt bordering Meghalaya by NGO Eco Concept in collaboration with PHED.

Apart from the high pH value, the survey also found the levels of hardness, turbidity, residual chlorine, iron and bacteria high in the water. Of the 1,052 water samples tested across 129 villages, 202 or 19.20% were found to have pH above 7 while 33 samples or 3.13% had pH above 8.5 limits, which is considered unsuitable for drinking. "The pH value is a measure of the intensity of alkali or acid in water. A high value of pH hastens scale formation in water-heating apparatus and reduces the germicidal potential of chlorine. A pH level below 6.5 leads to corrosion in pipes thereby releasing toxic metals," the report said. Only 549 samples or 52.18% of the total samples were found to have pH levels within permissible limits of 6.5 to 8.5 pH. Absolutely pure water has a pH value of 7.0.

Prof. (Dr.) Soumen Kumar Mahapatra, Minister-in-Charge, Department of Water Resources Investigation & Development, Govt. of West Bengal, released the DVD of a SUSANTA BISWAS documentary titled 'Jal Dharo Jal Bharo' (Preserve Water, Reserve Water), produced by the Govt. of West Bengal, at Pragati Utsav in Milan Mela at Kolkata, Thursday, 24th May 2012. Mr. Prasanta Sarkar, Engineer-in-Chief & Ex-Officio Secretary and Mr. Rajib Chatterji, Chairman West Bengal Agro-Industries Corporation Ltd. were present in the occasion.

The documentary, first of its kind produced by the Government of West Bengal, is on the pioneering project of the State Government to preserve rain water with a focus on the activities of State Water Investigation Directorate in this regard. To meet the increasing demand of water for the purpose of irrigation throughout the state of West Bengal, the issue of preservation of rain water and conservation of water in general has emerged with significant gravity for combating the overall scarcity of drinking water and maintaining its regular supply to the fisheries industries. To preserve rain water and other natural water available on the earth’s surface by carefully controlling the respective resources, Government of West Bengal has initiated a pioneering project, titled “Jal Dharo–Jal Bharo” (Preserve Water Reserve Water). All out initiative is being taken to establish appropriate storage tanks and check-dams of various capacities and sizes in different areas at the state, in implementing its goal. The Documentary is made in three languages, e.g. Bengali, English & Hindi.

For details click on the following album link: 

Releasing of a SUSANTA BISWAS Documentary - Jal Dharo Jal Bharo

 Corrosion causes contamination of drinking water with sewer leading to Gastroenteritis outbreak in Bangalore

“The patients were mostly from the Okalipuram slum. The slum-dwellers have drawn illegal [water] connections and the underground drainage system is not sound. As the water pipeline is corroded, the chances of sewage mixing with drinking water are high.”

http://corrosion-awareness-for-public.blogspot.com/2012/05/cappings-corrosion-causes-contamination.html

You know how much energy is available within the scientific community to resolve corrosion issues faced by Public. The situation in industries is totally different. It is driven by the investment capabilities of asset owners to do research and find solutions for complex problems. If the assets are owned by Public, who will extend "Helping" hands for finding answers? Public only. It is purely Public-Public collaboration to resolve our own issues. We need energy to alarm the community through human-powered transmission.

We can ping at this time. Most importantly, CAP is an eco-friendly Movement.

Do you like to own a CAP-cycle and ping? 

Of late, I have been thinking that one day goes by without a newspaper carrying an article or story related to environmental issues. If you live in India (like I do), such news is more often than not (very) depressing. After reading numerous such stories, I (almost) started questioning myself about whether anything "can go right" when it comes to environmental concerns. So, this morning, when I picked up the latest issue of Saudi Aramco World magazine and flipped through it, I was very pleasantly surprised to see something positive for a change . . . to read more, click here.

CAMUS‐SBT  is an  oxygenation  engine that outperforms  conventional  technologies

likeActivated Sludge Process (ASP), Sequential Batch  Reactor (SBR),  Membrane  Bio Reactor

(MBR)and Moving Bed Bio‐reactor (MBBR). Our technology harnesses a  special set  of

 bio‐chemical reactions  to deliver  the  oxygenation required for effluent treatment. 

In  conventional technologies,  aeration isachieved mechanically, which is very energy

intensive.  At higher ambient  temperatures (like inIndia) the solubility of oxygen in water

is  low, therefore  energy  requirements of mechanical  aeration  used by  conventional

technologyincreases.  Moreover, air contains only20% oxygen, the rest being nitrogen that

ispassed into water wastefully, further adding to process inefficiency.

CAMUS‐SBTresolves this problem  using a  bio‐chemical method  of  oxygenation, which

notonly uses the atmospheric oxygen, but also uses the  nitrogen  from the  atmosphere  in  a

specially  engineered natural  ecology  to achieve the desired level of purity.

In  addition conventional  technologiesgenerate  large  amount of  sludge  for which

additional  disposal facilities  have  to  becreated.  CAMUS‐SBT  does not  face  any such

problems.Theschematic of the process is shown below.  

Featuresof our technology:

•  

  ·         Low‐energy consumption

• ·         All green natural process

• ·         No moving  parts  apart from pumps

• ·        No bio‐sludgeformation

• ·         Efficient removal  of  COD and nitrogen

• ·         Near drinking  water  quality after treatment

• ·        Treatment  cost Rs  3‐5  per 1000L

• ·        Garden likeambiance

• ·         Bio‐tower designs  available for spaceconstrained areas.

• ·        One time mediainstallation

• ·         Long life

• ·         Unskilled personnel  sufficient to operate

• ·        No foul Odor

Varioususes of the technology 

·                                 Sewage treatment plant(STP)  and industrial effluent treatment plant (ETP)applications.

·                                 Retrofit ofpre-existing STP/ETPs with SBT/CAMUS-SBT systems. 

·        Laundry EffluentTreatment for total water reuse. 

·        Distilleryspent-wash treatment. 

·        Coffee Effluenttreatment.

·        Hospitals waste water ,Hotels waste water,Municipal waste water can all be treated using SBT.

·        Design of zerodischarge air scrubbers for removal of waste noxious gases (Sulphur, NOx  

         and organic pollutants from Industrialprocesses).