Discharge calculation for STP ETP

REF. WASTE WATER ENGINEERING BY METCALF & EDDY PP 28 TABLES 2-11

HOSPITAL EFFLUENT TREATMENT PLANT :

Discharge Calculation:

OPTION-I

.

The proposed hospital will have ------ beds.(Number of bed mentioned in municipality records or other govt document)

1. Bed in Hospital= Nos @ 500 liter per bed = Liter 

2. Employee in Hospital = nos @ 40 liter per employee= Liter

3.Hostels- Persons = nos @ 150 liters per person.= Liter

4.Kitchen Meals= nos@ 10 liter per meal = Liter

So, Total Quantity of discharge: --------- liter per day

Discharge Calculation:

OPTION-II

Total water purchased or drawn from bore well = A  Liter/day (Bill of water purchase or flow meter reading of bore well)

Quantity of Effluent , liter per day = 80 % of ( A )

WASTE WATER FLOW RATES IN DIFFERENT UNITS:
Waste water consist primarily of used water, the water that reaches the sewer .

For different units it is different as shown in the chart .

Source	Unit	Range l/u/d	Typical l/u/d
Apartment	Person	200-340	260
Hotel resident	Resident	150-220	190
Hotel Employee	Employee	30-50	40
Individual Home	Person	190-350	280
Airport	Passenger	8-15	10
Automobile service station	Vehicle served	150-200	200
Restaurant	Meal	8-15	10
Office	Employee	30-65	55
Laundry	Machine	1800-2600	2200
Laundry	Wash	180-200	190
Hospital medical	Bed Employee	500-950 20-60	650 40
School	Student	20-65	40
School boarding	Student	200-400	280
For Industries		80% of water used used in production will be released as waste water
Meat processing	Mg	15-20 cu mtr/ Mg
Milk Products	Mg	10-20 cu mtr/Mg
Bread	Mg	2-4 cu mt/Mg
Beer	Mg	10-16 cu mtr/Mg
Whisky	Mg	60-80 cu mtr/Mg
Paper Pulp	Mg	250-800 cu mt/ Mg
Paper	Mg	120-160 cu mtr/Mg
Textile Bleaching (Cotton)	Mg	200-300 cu mtr/Mg
Textile Dyeing (Cotton)	Mg	30-60 cu mtr/Mg

REF : WASTE WATER ENGINEERING : TREATMENT , DISPOSAL AND REUSE

--- METCALF & EDDY .