Clarification • Filtration • Membrane Protection

Raw Water Treatment Chemicals

Application-specific chemistry to stabilise clarification, reduce solids loading and protect downstream filters, UF, RO and process-water systems against variable raw-water conditions.

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RAW-WATER PRETREATMENT CONTROL

RAW-WATER
ASSESSMENT

COAGULATION
& pH

FLOCCULATION
& SETTLING

FILTRATION
& SDI

MEMBRANE /
PROCESS FEED

Assess variabilitySeason, source and contamination

Test chemistryJar tests and compatibility review

Control dosageFeed proportional to operating demand

Protect downstreamFilters, membranes and processes

Treatment Programme

Condition the water before it becomes a plant problem

Raw-water chemistry can change with rainfall, source blending, industrial activity and storage. YWT establishes a controllable programme around actual water quality and the requirement of the next treatment stage.

01 / DESTABILISE

Coagulation

Coagulants and coagulant aids selected to destabilise fine colloids, reduce colour and improve solid–liquid separation.

02 / BUILD FLOCS

Flocculation

Anionic, cationic or non-ionic polymers selected through testing to form stronger, faster-settling flocs.

03 / CONTROL CONDITIONS

pH Adjustment

Operating pH and alkalinity controlled to improve clarification, precipitation and downstream treatment performance.

04 / PROTECT MEMBRANES

Antiscalant & Dechlorination

Membrane protection based on feed analysis, recovery, scaling tendency, oxidant exposure and membrane compatibility.

05 / MAINTAIN SURFACES

Cleaning Programmes

Filter and membrane cleaning chemistry selected for the identified mineral, organic or biological foulant.

06 / STABILISE OPERATION

Defoamers & Aids

Application-specific support where foam, carryover or difficult hydraulic behaviour disrupts treatment.

Selection Basis

The correct product is selected from water behaviour—not from a standard dose chart.

Source QualityTurbidity, colour, pH, alkalinity, hardness, organics, metals and seasonal variability.

Process DutyClarifier type, retention time, filters, membrane configuration and target production.

Jar TestingComparative dose, floc formation, settling, clarified-water quality and sludge generation.

CompatibilityMaterials, membrane limits, oxidants, downstream resins and product-water use.

Total CostChemical dose, sludge, filter run, cleaning frequency, recovery and plant availability.

Monitoring & Control

Parameters that keep pretreatment visible

Raw-Water TrendTurbidity, pH, alkalinity, colour and suspended solids

SeparationFloc formation, settling, clarified-water turbidity and sludge blanket

FiltrationPressure drop, run length, backwash and filtered-water quality

Membrane ProtectionSDI, conductivity, oxidant, antiscalant dose and normalised performance

Relevant YWT Products

Products used within an engineered programme

RO AntiscalantScale-control product for RO pretreatment, selected after feed-water analysis, recovery and saturation review.

Application-Specific Coagulants & PolymersProgramme selected through source-water assessment and jar testing; chemistry and dosage are site-specific.

Technical qualification: Product suitability, compatibility and dosage must be confirmed by YWT India for each application. Safety and handling requirements are governed by the applicable SDS.

Production & Development

Application engineering supported by formulation capability

YWT India works with Valient Biotech for chemical formulation, production, quality control and R&D support. Programme design, application engineering and field performance review remain coordinated by YWT India.

Laboratory support: water and deposit evaluation

Field optimisation: dosage and operating-window review

Dosing systems: storage, metering and injection arrangement

Operator support: test methods, logs and corrective actions

Need stable clarification or better membrane protection?

Share the raw-water analysis, flow, treatment scheme, target quality and operating concerns. YWT can define the testing and treatment programme.

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