zero liquid discharge (zld) plant
TRANSCRIPT
ZERO LIQUID DISCHARGE (ZLD) PLANT
ZLD FLOW DIAGRAM
HIGH TDS PROCESS
EFFLUENT
MULTIPLE EFFECT
PRE-TREATMENT STRIPPER EVAPORATOR (2FFE & ATFD - 2 SLUDGE FOR
3FCE) / PUSHAR Nos. DISPOSAL
CENTRIFUGE
CONDENSATE
LOW TDS EFFLUENT BIO-TREATMENT - I
SLUDGE FOR
DISPOSAL
SEWAGE TREATED
EFFLUENT WATER PERMEATE
REJECT REJECT
BIO-TREATMENT - II RO-II RO - III RO-I
SLUDGE FOR PERMEATE REJECT PERMEATE
DISPOSAL
REUSE REUSE
ZLD - DESCRIPTION
High Pollutant Stream (HPS) :
High Pollutant Stream predominantly from process is separately collected in the Equalisation tank along with reject of Reverse Osmosis Plant III (RO III) and then subjected to Physico-chemical treatment for neutralisation and suspended solid separation. The Physico-chemical treatment consists of neutralisation, flash mixing, flocculation and primary clarification.
The physico chemical treated water is taken to Stripper/ Multiple Effect Evaporator (MEE) plant for evaporation / concentration. The concentrate from MEE is further concentrated to a dry solid in Agitated Thin Film Dryer (ATFD). The evaporated condensate from MEE and ATFD are taken for further treatment in Biological Treatment Plant –I (BTP-I). The concentrated chemical sludge from ATFD is disposed to authorised co-processer for cement industry / authorised Secured Land Fill (SLF)site.
The BTP-I consists of two stage aeration (Primary & Secondary) treatment with Aeration tank-1 followed by Bio-Clarifier -1 and Aeration tank-2 followed by Bio-Clarifier -2. The bio-clarifier overflow water goes to Tertiary clarifier followed by Filter feed tank. From Filter feed tank, it is fed to Pressure Sand Filter (PSF) and Activated Carbon Filter (ACF). The filtered treated water is taken to RO Plant - I for further treatment.
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ZLD - DESCRIPTION
Reverse Osmosis Plants (RO I, RO II & RO III):
The treated water from Biological treatment plant – BTP I & II are processed through RO-I & II respectively and the permeate water from the RO is recycled through non process / process applications.
The reject from the RO I & II are fed to RO III for further recovery of water. Permeate from RO III is used for non-process application / recycled as feed to RO II. Reject from RO III is sent to Multiple Effect Evaporator (MEE) for further processing.
The permeate water from the RO meets the potable water specification on all physio chemical analysis.
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HPS – FLOW DIAGRAM
HPS EFFLUENT PRE TREATMENT
HPS EFFLUENT OIL
EQUALIZATION NEUTRALIZATION PRIMARY TO MEE
SKIMMER CLARIFIER FEED TANK
TO PRIMARY
SLUDGE TANK
MEE FLOW DIAGRAM
HPS Primary LP STEAM
treated Effluent
STRIPPER
HIGH COD
CONDENSATE
RO III reject
TVR HP STEAM
MEE FEED TANK PRE-HEATER FFE-I FFE - II FCE-I FCE - II FCE - III
RECIRCULATION
CONCENTRATE
PUSHAR
ML TANK
THICKENER
CENTRIFUGE HYDROCYCLONE
CONDENSATE
VTFD - I VTFD - II
CONDENSATE CONDENSATE
TANK
SALT FOR
DISPOSAL TOBTP-I
HPS – FLOW DIAGRAM
SLUDGE FROM HPS
PRIMARY CLARIFIER
CONDENSATE CONDENSATE BIO - BIO - BIO - BIO - TERITARY
FROM MEE / ATFD TANK REACTOR - I CLARIFIER - I REACTOR - II CLARIFIER - II CLARIFIER
SLUDGE
SLUDGE
FILTER
TO RO I FEED
PRIMARY
PSF ACF SLUDGE
FEED TANK TANK
TANK
BIO
DECANTER
PRIMARY
BIO-SLUDGE DECANTER
SLUDGE
CENTRIFUGE
SLUDGE
THICKENER CENTRIFUGE
THICKENER
TANK
SLUDGE FOR SLUDGE FOR
DISPOSAL
DISPOSAL
ZLD – MEE PLANT
ZLD - BIOLOGICAL TREATMENT PLANT
ZLD - RO PLANT
Contact Address: MYNOV TECHNOLOGIES
Office Address : 128/95 ,sankaracharya nagar, yashoda
nagar, Kanpur, Uttar Pradesh, India - 208011
Mobile: +91 8081503315,9889836984
e-Mail: [email protected]
web-site: www.mynovtechnologies.com