ASP V/S SBR

TREATMENT PROCESSES

SBR

ASP

A. STYRENE BUTADIENE RUBBER

B. SHORT BARREL RIFLE

C. SEQUENTIAL BATCH REACTOR

v/s

D. ALL OF ABOVE

GOTCHA!!!!

IT IS INDEED OPTION C

LET'S TOUR A WASTEWATER PLANT

ACTIVATED SLUDGE PROCESS - CLASSIC EXAMPLE

So if we delve closely

ASP v/s SBR = SPACE v/s TIME

SO WHAT IS SBR?

SO IS SBR AN

ACTIVATED

SLUDGE

PROCESS??

YES

NO

MAYBE

SBR

BOD < 10 mg/l, TSS < 10 mg/l,

COD<15 mg/l, TN<10 mg/l and

TP < 2 mg/l

ASP

SBR

BOD < 30 mg/l, TSS < 50 mg/l,

COD<250 mg/l, TNNo

Treatment, TP < No Treatment

98%

Complete treatment occurring

at onestep

90-95%

ASP

Single Treatment unit with

retention time around 7 - 12.5hrs.

Since SBR is a batch process, consistent quality at the outlet is achieved as system can handle peakflows effectively.(E.g. Think Rush Hour Traffic)

Downstream processes such as Tertiary Filters thus are saved from handling additional BOD and SS Loads.

Requires multiple treatment units like

primary clarifier, aeration tank and

secondary clarifier.

SBR

ASP

Units are designed for average flows and operate at higher flows during peak flows.

Even though these peak flow operations are permitted to design, they cause temporary deterioration in quality.

This lead to quality variations every day.

Total retention time in tanks

is around 15 hrs.

Treatment Efficiency &

Performance

AREA REQUIREMENTS

SBR

ASP

Handling of Peak Flows

v/s

Requires only 40% area as compared

to conventional ASP due to compact

scheme. It is only a single tank and

sludge handling system.

Requires more area, as it requires treatment units such as primary clarifier, aeration

tank, secondary clarifiers, thickeners, etc. It

requires further more area for additional

treatment units for tertiary treatment.

Civil Works

Operation and Maintenance

SBR

ASP

Low operating cost due to less number of treatment units and flexibility of operation. In-built features ensures optimum operating costs proportional to the incoming

pollutant load.

If soil condition poor as rock 6m below ground,

requiring expensive pile foundation with high uplift. As ASP requires several treatment units

with circular shape and huge area, it becomes

expensive for civil works.

High due to more number of treatment units and

rigidity of design in operating at lower flows and

lower BOD levels.

It also increases because additional chemicals are

required during tertiary clarification of secondary

treated effluents.

Higher power consumption

Construction cost is low as compactness & simple geometry of SBR Basin minimizes piling cost and thus reduces civil costs significantly. It can be constructed in short period of

time.

SBR

ASP

COMPARISON

It's a variant of ASP with a twist in tale (or tail)

LETS SEE HOW??

.

The plant is completely automatic

and provided with remote monitoring

facility to monitor its performance.

The plant is not fully automatic. It requires additional investment to implement remote monitoring system.

Remote monitoring of

plant performance

SO GO AHEAD AND FIRE !!!!