RAIN WATER HARVESTING TREATMENT

PROCESS & SOP FOR FESTO,BANGALORE

Submitted by

JEY KUMAR.B

CHOLA AQUA TECHNOLOGIES New No.34 Old No.216/2 2

nd Floor,

St. Mary’s Road, Mandaveli, Chennai – 600 028.

Tamil Nadu, India. Cell: 94443 03293/044-24610789

Email: cholaaquatech@gmail.com

PROCESS DESCRIPTION

Abstract:

The treatment scheme is to produce treated water of high quality and suitable for

portable uses; it uses the state of art “filtration” for the removal of suspended particles,

organics and microbial contaminations.

The treatment scheme consists of a two stage pre-treatment for conditioning the

water to make it suitable for feeding to filter.

The first stage pre-treatment consists of coagulant dosing, flocculation and

sedimentation.. The next stage consists of physical impurities filtration (multi grade

filter).

The conditional (pretreated) water is disinfected by chlorine dosing for removal of

microbial contaminants. The purified water is match for the reuse water quality

standard.

RAIN WATER HARVESTIG PROCESS FLOW CHATRT –(GOLD COIN)-FESTO

DP- DOSING PUMP

DP DP

CHEMICAL

COAGULATION CHLORINE

TREATMENT SCHEME

Treatment Abstract:

The treatment process was designed to treat the harvested rain water for portable use.

The treatment capacity of the plant is so designed, for per hour three thousands liters with an operational time of

16 hrs.

The processes (procedure) adapted are coagulation, sedimentation and followed by particle filtration. Sterilization

using by chlorine.

TREATMENT DESCRIPTION

The Rain Water from the different Locations at Gold coin Site, FESTO Bangalore, will be

collected in common sump. . After collection, the rain water will be pumped to the

sedimentation tank. The time of pumping the rain water will be subjected to the on line

coagulation with the aid of dosing pump

The coagulated water will undergo a process of sedimentation. The sedimentation

tank with a hydraulic retention time of minimum two minutes maintaining optimum level of

sedimentation. The reaction cum sedimentation tank will also provided with P.V.C piping coils

to increase the traveling time for chemical reaction and good settling.

After settling the effluents will be passed the clarified water storage tank for filtration.

The clarified rain water will be passed through (by pump) the particle filter (multi grade) to

remove suspended and coagulated particles. The water coming out of the multi grade filter will

be subjected to on line sterilization.

Liquid chlorine is used as the sterilizer to reduce the microbial load. Chlorine being an

oxidizing agent can even reduce organic carbon and odour to a fair extent .After the chlorinated

filtrate water will be stored in a storage tank and used whenever necessary. The stored water is

clear, free from microbial contamination and can be used for portable and other purposes.

STANDARD OPERATION PROCEDURE (SOP)

1) ENSURE POWER IS ON.

2) SWITCH ON THE TRANSFARE PUMP.

3) SWITCH ON THE CHEMICAL DOSING PUMP.

4) OPEN THE AIR RELASE KNOB AND ENSURE THE CHEMICAL IS DOSE.

5) SWITCH ON THE FILTER FEED PUMP.

6) SET THE MULTIPORT VALVE (MPV) HANDLE AT THE BY PASS MODE.

7) ENSURE THE AIR LOCK IS REMOVIED.

8) OPEN THE PUMP BY PASS VALVE.

9) SET THE MPV HANDLE AT THE MODE OF BACK WASH.

10) CLOSE THE BY PASS VALVE.

11) AFTER BACK WASH (3 MIM.) AGAIN OPEN THE BY PASS VALVE.

12) SET THE HANDLE AT THE RINSE MODE.

14) DO THE SAME PROCEDURE THREE TIMES.

15) AFTER RINSE CHECK AND CONFORME WATER IS CLEAR.THEN SET THE MPV HANDLE AT THE MODE OF SERVICE?

16) SWITCH ON THE DOSING PUMP (CHLORINE)

17) OPEN THE AIR RELEASE KNOBE.AND ENSURES CHLORINE IS DOSING.

FLOCCULANT CHEMICAL MIXING

TAKE 25 GM OF CIBA MAKE ‘MAGNOFLOC’ CHEMICAL.

PORE 40 LITER OF PURE WATER IN THE CONTAINER.

ADD LITTLE CHEMICAL AND STRIER.

CHOLORINE MIXING METHED

TAKE 40 LITER OF PURE WATER.

PORE 250 ML LIQUID CHLORINE .MIX WELL.