Waste Management Proposal at Shriram Spandhana
Objective: A zero waste apartment and a model apartment in the wake of the new rules set by BBMP w.e.f Oct 1st 2012.
BBMP Mandate for Bulk Generators:
The BBMP Rules pertaining to Bulk Generators define Bulk Generators as hotels, choultries, etc. and include residential apartments with 10 units
and above OR a residential entity which generates 100 kgs. or more of wet waste every day. Therefore Spandhana falls within the category of a
"Bulk Generator".
The Rules state that Bulk Generators shall not mix wet waste with any other waste. Wet waste and garden waste shall be composted at source
or processed using bio methanisation technique. If there are space constraints for composting, arrangements should be made by the Bulk
Generator to hand over wet waste to privatecomposters or BBMP Wet Waste collectors on payment of prescribed fees. However given that the
Pollution Control Board has mandated the installation of an organic waste convertor, we will have to proceed with the mandate of installing an
organic waste convertor.
The Rules state that Bulk Generators should hand over dry waste to authorised Dry Waste Collection Centres. Sanitary waste should be
deposited at the nearest Bio-Medical Waste Collection Centre.
Only rejects/inerts will be collected by the BBMP.
To summarise, a Bulk Generator is solely responsible to arrive at ways and means of disposing its waste and the BBMP will not collect waste as a
matter of routine the way it is being done today.
A. Waste Streams, Quantities and method of handling in Spandhana:
a) Quantity of Waste:
Total quantity of waste generated in a year ~ 80T
Dry waste ~ 40T
Organic Waste ~ 35T
Medical Waste~ 5T
b) Method of handling:
Dry Waste – Dry waste will be segregated into ~15 different streams – low value plastic, high value plastic, glass, foil etc. This will be sold
to a vendor as per prevailing market prices. A pilot done for 6 months yielded an avg. of app 2000 Kgs a month and a revenue of ~ Rs
8000/month.
Organic waste – to be composted on site, options for converting organic waste are
a) Manual – composting tanks, app cost – 3 lakhs, composting time 30-45 days
b) Machine – Organic Waste converter machine (to grind the waste), app cost – 10 lakhs, composting time- 20 – 30days
Medical Waste – this has to be sent to the closest BBMP authorized incineration centre. Money has to be paid based on weight.
B. Infrastructure & Running Costs: There is a good amount of space ~ 1500 sqft available near the STP area. This can be modified for handling
all the above mentioned waste in a neat and systematic manner. A hurriedly built roof is in place there which is not appropriate for handling
waste. The height of the roof has to be increased and it has to protect the area from rain. Apart from that a neat cement floor without any
cracks and appropriate drainage and electrical connections need to be provided.
Running costs – in the earlier pilot, two housekeeping people were trained to segregate waste. These people are incapable of handling
segregation load leading to huge pile up and stink of material. It has therefore been decided to outsource the waste handling part to an
Organisation called Waste Wise Trust. WWT has been in this business for the past 20 years and employs rag pickers, they are capable of a
better and faster job. A contract needs to be signed for the same. The various costs for the project are:
i.
Fixed Costs
a. Floor and Roof cost including plumbing and electrical : 1,20,000 + 90,000 = 2.1 lakhs
b. Cost for Organic Waste Handling:
i. Machine: 10 lakhs
OR
ii. Composting tank with shredder: ~ 4-5 lakhs ( to be calculated)
ii.
Variable costs
a. Manpower: 2.5 lakhs/year
b. Consumables:
i. Machine: 80000/yr
OR
ii. Tank: 15000/yr
Organic Waste Converter: PCB has given a notice indicating that an OWC needs to be in place for renewal of STP license. Clarification is
being sought regarding the meaning of OWC. There are two ways of converting organic waste – manual method (composting tanks) and by
using machine (OWC). If PCB is fine with option1 – that would be our preferred option, least cost and sustainable in the long run. Option of
using compostable bags is also open for this method of composting. These bags could be provided at the snack bar. The supplier for the
same is Haritha NT based out of Chennai.
C. Proposed Layout near STP Area:
All dimensions in Feet and inches
Garbage pick up by trucks
9'
3'4"
Current
Garbage
Shed
15'4"
STP PLANT
Current shed done at a low hieght 8'
19'
40'
Filter Press
38'5"
Entry door
3'
6'
10'
15'7"
11'9"
19'
Wash area
5'
61'
Basic Requirements
1) The current shed hieght to be increased to 10' - flush with the top boundary, could be supported with rods projecting from the wall
2) Alignment of the current shed to be changed - slope towards the centre/wall of STP
3) Shed to be extended to filter press area and above the current garbage area
4) Rain water to be collected in the centre (near STP wall) and drained to the ground - a simple pit
5) The entry to be covered with grill and a broad door to enable movement of machines, bins and people
6) Regular proper cement flooring with a smooth cement finish
7) Slope of the floor to ensure proper drainage of water
8) For better ventilation some transparent roofing sheets (total 8-10) to be put in place
9) Plumbing and electrical points (4) to be provided
Team: Jeeva, Veena, Hassan & Devishree
Date: 21st Oct 2012