Black Water Recycling System For Ladies Hostel of VA

Objective – To set up the Black water treatment system for ladies hostel of VA.

27/06/2022 to 15/07/2021

For Black Water Recycling System For Ladies Hostel we designed bubbling system with MBBR (moving bed biofilm reactor). For black water recycling system we used bubbling (aeration) and MBBR. With the help of Bubbling we maintained aerobic condition and MBBR helps to activated sludge aeration and it gives space for biofilm formation. This system promotes the growth of aerobic micro-organisms which helps to drop the COD, BOD and TDS up to 50% with in 24hrs.

lab scale experiment for black water system –

Material required –
1. 15 lit bucket
2. 2 Air bubblers ( 2 watt each)
3. MBBR ( 1 lit )

Methodology –

For lab scale experiment ,I have taken 10 lit of black water in one bucket . in that bucket 1 lit of MBBR were added and for aeration purpose 4 watt bubblers were used. set up was observed for near 42 hours.

In this study, blackwater treatment is performed by using bubbling systems. The observation is focused on decrease in Chemical Oxygen Demand (COD), TDS during processing.

Initial analysis of black water sample –

COD	TDS
1938 mg/lit	1420 ppm

table. initial readings

Observation after 24 and 40 hours –

Sample	COD	TDS
After 24 hours	918 mg/lit	1129 ppm
After 40 hours	612 mg/lit	1007 ppm

table . Readings after 24 and 40 hours

Conclusion –

I have observed that within 24 hours COD of black water get reduced by 50 % . In this method high amount of aeration is required.

After lab scale experiment, I started to do work on pilot scale treatment on black water system.

Pilot scale setup for black water system –

16/07/2022 to 25/07/2022

Material required –
1. 1000 lit IBC tank
2. Air pump (58 watt)
3. MBBR (20 lit)
4. Plumbing pipes
Methodology – For black water treatment system, ,I have taken 1000 lit of black water in one IBC tank , in that tank 20 lit of MBBR were added and for aeration purpose 58 watt bubblers were used. In this study, blackwater treatment is performed by using bubbling systems. The observation is focused on decrease in Chemical Oxygen Demand (COD), TDS during processing.