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Swachh Bharat Abhiyan: What Are Twin Pit Toilets?

World Toilet Day 2020: Twin pit toilet technology is an onsite waste management system that converts human waste into manure

Swachh Bharat Abhiyan: What Are Twin Pit Toilets?
Highlights
  • Twin pit is a recommended toilet technology by World Health Organisation
  • The government provides Rs. 12,000 for the construction of twin pit toilet
  • Twin pit toilet converts human waste into manure without any treatment

New Delhi: It is 11 am and the people of Marora village in Nuh district of Haryana are caught up with their daily routine, with some busy working in their farms while others are finishing their household chores. As we walk through the narrow lanes, looking at the blue and pink coloured toilets with the name of the owners neatly written on them, villagers call us to show their “well built and maintained” toilet as if it’s some treasure. Mehboobi, a resident of the village, boasts about the shining twin pit toilet she and her husband now possess and says, “Until 2017, we had to go to a barren land or in the fields far away to relieve ourselves. At night or when it rained water would accumulate, it would become difficult for us, especially for girls to go out and defecate. Now my husband and I can use the toilet whenever we want.”

Also Read: World Toilet Day 2020: All You Need To Know About The Theme And Significance

Swachh Bharat Abhiyan: What Are Twin Pit Toilets?

Mehboobi from Marora village in Nuh district of Haryana, a proud owner of a twin pit toilet

Similar stories were narrated by other villagers as the NDTV team visits the now open defecation free (ODF) village. The villagers relive the transition from defecating in the open to now owning a toilet. In 2017-18, Sulabh International constructed 95 twin pit toilets in Marora village of Haryana.

A twin pit toilet looks and functions more or less like a regular toilet but with an added benefit of converting human waste into manure. It is a recommended toilet technology as per the World Health Organization (WHO) and was promoted under Swachh Bharat Abhiyan as well. Here is what a twin pit toilet is.

Also Read: WASH Warrior: Meet 45-Year-Old Ganesh Nagle, Who Is Ensuring His Fellow Slum Dwellers In Bhopal Are Not Deprived Of Sanitation Facilities

Twin Pit Toilet Technology

The twin pit pour flush toilet or twin leach pit toilet is a toilet with a provision to manage fecal waste locally unlike regular toilets that are linked to the sewer network and the fecal waste once flushed down is transported from other households through pipes and drainage system to a sewage treatment plant.

While a twin pit toilet lacks the piped network or link to the sewage treatment plant, still it ensures that the human waste is treated naturally without polluting water bodies or the soil. The main feature of this toilet technology is the two pits are used alternatively, to ensure onsite fecal sludge management making it a complete on-site sanitation solution at the household level.

Swachh Bharat Abhiyan: What Are Twin Pit Toilets?

Diagram of a basic twin pit toilet

Also Read:43 People Have Died Due To Manual Scavenging This Year, Says Safai Karmachari Andolan’s Bezwada Wilson On Kaun Banega Crorepati

Twin Leach Pit Toilet: How It Works

The two pits are connected with a junction chamber (a Y shape chamber that restricts the flow of waste to one leach pit at a time). After every use, while the liquid waste percolates into the soil through honeycomb structure of the pit, fecal waste gets collected in the pit.

In a family of five, a pit gets filled in two to three years. When the first pit gets filled, the flow of excreta has to be diverted to the second pit via the junction chamber. The content in the former pit can be left unattended for two years to degrade and turn into manure which can then be used for agriculture purposes or sold at a nominal price. Hence, waste to wealth, says Sanjeev Shekhar Jha, Project Leader, Learning and Knowledge Management, India Sanitation Coalition, FICCI.

While using a twin pit toilet, users are advised to not use heavy cleansing materials as they may hamper the quality of manure. Also, while cleaning, usage of high amount of water will result in the pit getting filled early.

Swachh Bharat Abhiyan: What Are Twin Pit Toilets?

Five key points to remember while constructing a twin pit toilet

Also Read: “Building Toilets Is Not Enough To Eradicate Open Defecation,” Experts Stress On The Need To Maintain The Toilets in Delhi

Construction Of A Twin Pit Toilet

The government under the Swachh Bharat Abhiyan provides a subsidy of Rs. 12,000 to construct an individual household toilet and promotes twin pit toilet for onsite waste management.

I have worked in areas like Jharkhand, Assam and I’m a clear witness of the fact that a basic twin pit can be constructed at a cost of Rs. 12,000, says Mr Jha.

Along with offering safe sanitation, twin pit pour flush toilet is affordable as compared to traditional toilets and also don’t require regular water supply as opposed to toilets with flush which require regular piped water supply.

Also Read: On Ground Reports: Thousands Of Toilets Built Since 2014 Yet Access To Toilets Remains An Issue In The National Capital

Here is how an ideal twin pit toilet should be constructed:

Two pits: Two three feet deep circular pits are dug one beside the other. While pit walls have a honeycomb structure, the bottom is not plastered, and is earthen. Bricks joined in a 1:6 cement mortar ratio are most commonly used for lining. Other locally available materials like stone, wooden logs, cement concrete ring, burnt clay or even discarded coal tar drum can also be used for pit lining.

Honeycombing spaces in the pit are provided for passage of gases and water, but excessive space allows fecal matter to leach as well. To avoid this, two inch wide holes should be made in every alternate layer and each layer should have six to eight holes only. When using concrete rings, they need to be perforated in the same way, says Raman VR, Head of Policy at WaterAid India.

“A distance of three feet is to be maintained between two pits to avoid inter pit contamination. If space is not adequate to maintain sufficient distance, pits can be placed in proximity to each other with a cement wall in between”, says Mr Jha.

Swachh Bharat Abhiyan: What Are Twin Pit Toilets?

Two pits constructed adjacent to each other with a cement wall in between

The distance between two pits can be more than three feet, but then the pipe that connects the toilet pan with pit will need to be longer, leading to more water requirement. And more water in the pit means pit will fill up quickly.

Also Read: Journey Of Sanitation And Hygiene Practice In Rural India

Location And Shape Of Two Pits: Ideally the pits are constructed at the backside of the toilet, but depending on the availability of the space, the position of the pits can be changed.

Swachh Bharat Abhiyan: What Are Twin Pit Toilets?

Lack of space: A toilet constructed over the two pits

We got the two pits constructed in front of the toilet. Since they are underground and are covered with cement and RCC (Reinforced Cement Concrete) slabs to avoid entry of water in the pits, they don’t come in the way anyway. Therefore, it is completely okay to construct the pits anywhere around the toilet, says 75-year-old Gangadas, a resident of Marora village.

A pit may be circular, square, rectangular or linear in shape depending on the availability of space.

Swachh Bharat Abhiyan: What Are Twin Pit Toilets?

A newly constructed twin pit toilet with two circular pits

Also Read: Swachh Warrior: 16-Year-Old Tamil Nadu Girl, The Sole Breadwinner Of Her Family, Helps Build Toilets In Her Village

Pan: The ceramic toilet pan used in the pit toilet has a steep slope of 20-29 degree and requires 1.5 to 2 liters of water to flush out the excreta as opposed to normal toilets with a flush which on an average require 6 litres of water.

Swachh Bharat Abhiyan: What Are Twin Pit Toilets?

Ceramic toilet pan with a steep slope of 20-29 degree

Water Seal/Trap: Water seal or trap connects the toilet pan with the leach pit. Ideally, a water seal in pans should be of 20 mm only. Water seal more than 20 mm should be avoided as they require more water, leading to reduction in the life of a leach pit.

Pipe connecting toilet pan and pit must be straight. Use of bends make flushing harder, requires more water and leads to malfunctioning of the toilet, says Raman VR, Head of Policy at WaterAid India.

Swachh Bharat Abhiyan: What Are Twin Pit Toilets?

Pipe connecting toilet pan with pit must be straight

Junction Chamber: To restrict flow of excreta to one leach pit at a time, a Y shape junction chamber is connected to the two pits. The junction chamber has one inlet connected to the P-trap and two outlets connected to the leach pits. To ensure the flow of excreta in one pit at a time, one of the outlets of the Y-junction in the junction chamber is blocked while the other outlet is kept open.

Swachh Bharat Abhiyan: What Are Twin Pit Toilets?

Pros and cons of the much appreciated toilet technology – twin pit

Also Read: Promoted Under The Swachh Bharat Abhiyan, A User Assesses The ‘Twin Pit’ Toilet Technology

NDTV – Dettol Banega Swasth India campaign is an extension of the five-year-old Banega Swachh India initiative helmed by Campaign Ambassador Amitabh Bachchan. It aims to spread awareness about critical health issues facing the country. In wake of the current COVID-19 pandemic, the need for WASH (WaterSanitation and Hygiene) is reaffirmed as handwashing is one of the ways to prevent Coronavirus infection and other diseases. The campaign highlights the importance of nutrition and healthcare for women and children to prevent maternal and child mortality, fight malnutrition, stunting, wasting, anaemia and disease prevention through vaccines. Importance of programmes like Public Distribution System (PDS), Mid-day Meal Scheme, POSHAN Abhiyan and the role of Aganwadis and ASHA workers are also covered. Only a Swachh or clean India where toilets are used and open defecation free (ODF) status achieved as part of the Swachh Bharat Abhiyan launched by Prime Minister Narendra Modi in 2014, can eradicate diseases like diahorrea and become a Swasth or healthy India. The campaign will continue to cover issues like air pollutionwaste managementplastic banmanual scavenging and sanitation workers and menstrual hygiene

World

23,23,25,643Cases
19,46,11,603Active
3,29,58,002Recovered
47,56,038Deaths
Coronavirus has spread to 195 countries. The total confirmed cases worldwide are 23,23,25,643 and 47,56,038 have died; 19,46,11,603 are active cases and 3,29,58,002 have recovered as on September 28, 2021 at 3:48 am.

India

3,36,97,581 18,795Cases
2,92,2067,414Active
3,29,58,002 26,030Recovered
4,47,373 179Deaths
In India, there are 3,36,97,581 confirmed cases including 4,47,373 deaths. The number of active cases is 2,92,206 and 3,29,58,002 have recovered as on September 28, 2021 at 2:30 am.

State Details

State Cases Active Recovered Deaths
Maharashtra

65,44,325

41,396 32

63,64,027

1,38,902 32

Kerala

46,41,587 11,699

1,57,733 6,122

44,59,193 17,763

24,661 58

Karnataka

29,73,899 504

12,833 409

29,23,320 893

37,746 20

Tamil Nadu

26,58,923 1,657

17,261 24

26,06,153 1,662

35,509 19

Andhra Pradesh

20,47,459 618

12,482 566

20,20,835 1,178

14,142 6

Uttar Pradesh

17,09,778 6

176 0

16,86,712 6

22,890

West Bengal

15,66,865 472

7,584 99

15,40,530 556

18,751 15

Delhi

14,38,746 32

366 5

14,13,295 37

25,085

Odisha

10,24,764 444

5,102 214

10,11,482 653

8,180 5

Chhattisgarh

10,05,269 27

282 3

9,91,423 30

13,564

Rajasthan

9,54,316 13

86 9

9,45,276 4

8,954

Gujarat

8,25,872 21

142 9

8,15,648 30

10,082

Madhya Pradesh

7,92,504 8

118 2

7,81,868 6

10,518

Haryana

7,70,825 7

329 6

7,60,686 13

9,810

Bihar

7,25,947 3

57 11

7,16,230 14

9,660

Telangana

6,65,284 216

4,585 27

6,56,785 241

3,914 2

Punjab

6,01,538 38

284 2

5,84,747 35

16,507 1

Assam

6,01,031 412

4,587 42

5,90,593 362

5,851 8

Jharkhand

3,48,198 4

79 1

3,42,986 5

5,133

Uttarakhand

3,43,504 14

218 8

3,35,893 22

7,393

Jammu And Kashmir

3,29,125 117

1,513 1

3,23,190 118

4,422

Himachal Pradesh

2,18,523 209

1,730 16

2,13,124 225

3,669

Goa

1,76,145 50

862 56

1,71,980 106

3,303

Puducherry

1,26,127 37

866 35

1,23,423 72

1,838

Manipur

1,20,000 116

2,111 14

1,16,042 129

1,847 1

Mizoram

90,539 1,846

15,843 358

74,394 1,481

302 7

Tripura

84,085 19

275 3

82,999 22

811

Meghalaya

80,897 108

1,752 125

77,750 230

1,395 3

Chandigarh

65,217 7

44 3

64,354 4

819

Arunachal Pradesh

54,395 43

319 4

53,802 47

274

Sikkim

31,291 25

601 11

30,303 35

387 1

Nagaland

31,167 17

426 19

30,078 35

663 1

Ladakh

20,786 5

148 8

20,431 13

207

Dadra And Nagar Haveli

10,670

0 0

10,666

4

Lakshadweep

10,361

5 0

10,305

51

Andaman And Nicobar Islands

7,619 1

11 2

7,479 3

129

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