1

Nur Istianah, S.T.,M.T.,M.Eng_SPL_THP_UB

semester genap TA 2014/2015

PENGOLAHAN LIMBAH

CAIR

2

Pengolahan

limbah

Fisik

KimiaBiologi

3

Pengolahan Limbah (secara fisik)

Pri

ns

ip D

as

ar:

Menggunakan gaya natural

• Gravitasi

• Listrik/coulumb

• Van der waalls

Perubahan fisik

• Evaporasi

• Agglomerasi

• No chemical reaction

Teknologi pemisahan

4

Teknologi Pemisahan

Pengayakan

Sedimentasi

Flotasi

Adsorpsi

Filtrasi

Membran

Flate

Spiral

Hollow

Membran

3 steps of waste water treatment

PRIMARY SECONDARY TERTIARY

PURPOSE:

To Filter the

solid waste

PURPOSE :

To Eliminate

BOD

PURPOSE :

To get the

clean water

Methods:

-Oxidation

-Using activated

sludge process

Methods :

- discard the

poisonous organic

compounds, hard

metal, bacterias

Methods:

-Filtration

-Sedimentation

• Primary Treatment

(Reduce Solids 50-60%, BOD 30-50%)

Bar screens, Comminutor, Grit chamber (Settling tank)

• Secondary Treatment

(Solids 85-95%, BOD 80-95%)

Trickling filter, Activated sludge, Water treatment ponds

• Advanced Treatment

(Solids ~100%, BOD ~99%)

Land Application, Coagulation-sedimentation,

Adsorption, Electrodialysis

Major Stages of Treatment

Flokulasi & koagulasifilter

Tangki air

bersih

Cooling tower

Alat penukar panas

Boiler Alat penukar

panas

Softener

Praheater

Air pedingin

Air

pembangkit

steam

Air proses

Limbah

cair

Air sanitasi

Cl2

Air baku

Tangki penampung

Blow down

sludge

Koagulan & flokulan

Bagan alir sistem

pengolahan air industri

kondensa

t

stea

m

F.Eff/05

Water

treatment

primer

LUMPUR

Bak koagulasi

(hidraulik)

koagulan Bak flokulasi

(mekanikal)

Bak

sedimentasi

Water treatment

Air baku

KONVENSIONAL

- Koagulasi

- Flokulasi

- Sedimentasi

Pada unit – unit terpisah

Air bersih

CLARIFIER

- KOAGULASI (1)

- FLOKULASI (2)

- SEDIMENTASI (3)

PADA SATU KOMPARTEMENT

(UNIT)Air masuk

Bahan kimia

Air

bersih

1

2

3

Lumpur

Tampak bagian dalam clarifier

Scraper

Influent well

Weir untuk

effluent

Pengumpul sludge

Air

masuk

Koagulan

Air

bersih

Lumpur

Bagian

Sedimentasi

Bagian

Flokulasi

Bagian

Koagulasi

IPA tipe Plate Settler clarifier

TERIMA KASIH