BLUFLOC TECHNICAL GUIDE
Bluwat Polyacrylamide Selection Guide
How to choose BLUFLOC PAM by ionic type, molecular weight, charge or hydrolysis level, application and product form.
The best Bluwat polyacrylamide grade is the one that matches the process and performs consistently on the actual water, slurry or sludge. Start with the treatment duty, shortlist the appropriate polymer family, then compare grades under controlled test conditions.
BLUFLOC is the polyacrylamide range from Yixing Bluwat Chemicals Co., Ltd. This guide covers 24 catalogue grades: 18 powders and 6 emulsions. It provides a practical starting point for clarification, sludge treatment and selected industrial process duties.
A quick answer for buyers
Anionic PAM is often a starting point for mineral or chemically conditioned solids. Cationic PAM is often screened for organic and biological sludge. Nonionic PAM provides another option when a low ionic profile is useful. These are screening directions; the catalogue includes overlapping applications across families.
Understand the three PAM types
Polyacrylamide, abbreviated PAM, helps aggregate suspended or destabilized particles into flocs for separation. Ionic type describes the polymer charge. It does not, by itself, determine which grade will work best.
PAM type
BLUFLOC families
Where to begin screening
PAM type
Anionic PAM or APAM
BLUFLOC families
AA and HA powders; EA and EWA emulsions
Where to begin screening
Mineral solids, chemically conditioned wastewater and specific industrial duties
PAM type
Cationic PAM or CPAM
BLUFLOC families
C powders; EC emulsions
Where to begin screening
Organic or biochemical sludge and other duties listed for individual grades
PAM type
Nonionic PAM or NPAM
BLUFLOC families
N powders
Where to begin screening
Duties where a low ionic profile is worth comparing with anionic or cationic alternatives
Read molecular weight and charge separately
Molecular weight describes polymer chain size. Charge density or hydrolysis degree describes a different part of the grade profile. A higher rating in either column is not an automatic performance upgrade.
For example, AA6518 and AA8518 both have very high molecular weight, but their hydrolysis ratings differ. C8030 and C8040 both have high molecular weight, but their charge ratings differ. These pairs help structure a comparison without changing every catalogue variable at once.
The tables retain the catalogue terms Low, Medium low, Medium, Medium high, High, Very high and Ultra high. These are qualitative labels. They are not numerical molecular-weight values, charge percentages or hydrolysis percentages.
Define the actual process duty
An industry name is only the first filter. A textile plant may need wastewater clarification and sludge dewatering; those duties can require different grades. A paper-industry listing also needs to be narrowed to the exact process or effluent application.
Record the feed source, pH, solids content, salinity or conductivity, temperature, existing chemicals and separation equipment before choosing samples. Match the test to the result you need: clearer water, faster settling, improved drainage or better cake solids.
Choose the physical form with the preparation system
Powder and emulsion are supply forms. Both need the correct preparation before use. Compare the make-up equipment, available preparation time, handling arrangements and active-polymer dose alongside treatment performance.
Build an application based shortlist
The examples below are selected from the BLUFLOC catalogue application matrix. They are starting candidates, not a ranking or an exhaustive list. Other listed grades may be suitable after testing.
Application
Selected catalogue examples
What the trial should resolve
Application
Raw water and sewage treatment
Selected catalogue examples
AA6516, AA6518, C8030, EA6518, EC8040
What the trial should resolve
Clarified-water quality and downstream separation
Application
Industrial and textile wastewater
Selected catalogue examples
AA6518, C8030, C8040, N630, EA6518
What the trial should resolve
Solids character and upstream treatment
Application
Paper industry
Selected catalogue examples
AA6518, C8030, C9060, EA6518, EC8060
What the trial should resolve
Define the process or wastewater duty first
Application
Mining and metallurgy
Selected catalogue examples
AA5412, AA6518, C8030, N630, N850
What the trial should resolve
Settling, overflow quality and underflow behavior
Application
Organic and biochemical sludge
Selected catalogue examples
C8030, C8040, C9050, C9060, EC8060
What the trial should resolve
Drainage, solids capture and cake dryness
Application
Inorganic sludge
Selected catalogue examples
AA5412, AA6518, N850, EA6518, EC8040
What the trial should resolve
Actual precipitate and solids chemistry
Application
Oily water treatment
Selected catalogue examples
AA5412, AA6518, EC8040, EC8060
What the trial should resolve
Oil separation and solids capture under the real pretreatment
Application
Brine clarification
Selected catalogue examples
AA5412, AA6518, C8030, EA6518
What the trial should resolve
Performance in the actual brine
Application
Aluminum red mud
Selected catalogue examples
AA6518, AA8518, AA8520, N850, EA8520
What the trial should resolve
Settling and clarified-liquor quality
Application
Sugar and juice industry
Selected catalogue examples
AA6516, AA6518
What the trial should resolve
Separation performance and required product specifications
Application
Soil stabilization and cement making
Selected catalogue examples
AA5514, AA6516, AA6518, EA6518
What the trial should resolve
The specific process function and compatibility
Application
Oil and gas drilling and EOR
Selected catalogue examples
HA5514, HA6518, HA6520, HA7525, EWA6520, EWA7520
What the trial should resolve
A separate drilling or reservoir test program
A catalogue application mark identifies a field for evaluation. It does not establish an operating dose, a guaranteed result or equivalence between the grades in that row.
Anionic powder grade reference
The AA series spans several molecular-weight and hydrolysis levels. The catalogue places the HA grades in the oil and gas drilling and EOR application category.
BLUFLOC grade
Molecular weight
Hydrolysis degree
Molecular weight
Medium low
Hydrolysis degree
Medium low
Molecular weight
Medium high
Hydrolysis degree
Medium high
Molecular weight
Very high
Hydrolysis degree
Medium high
Molecular weight
Very high
Molecular weight
Very high
Molecular weight
Medium high
Molecular weight
Very high
Hydrolysis degree
Medium high
Molecular weight
Very high
Hydrolysis degree
Medium high
Molecular weight
Ultra high
Use the differences to design the trial
AA6516 is rated High in molecular weight, while AA6518 is rated Very high; both have Medium high hydrolysis. AA6518 and AA8518 share the Very high molecular-weight rating, while hydrolysis changes from Medium high to High. Compare their response at controlled preparation and dosing conditions.
AA8518 and AA8520 share the same broad ratings in this table. Those labels alone do not establish interchangeability. Request the grade-specific technical data sheet and compare both products on the intended duty.
Keep oil and gas selection separate
HA5514, HA6518, HA6520 and HA7525 are the listed powder candidates for oil and gas drilling and enhanced oil recovery, or EOR. Select the test program around the actual function. A wastewater settling test does not demonstrate drilling performance or reservoir suitability.
For a drilling duty, define the required fluid behavior and test in the intended water and formulation. For EOR, agree the reservoir and injection-water evaluation with the technical team before choosing a grade. The catalogue provides a shortlist rather than field-performance evidence.
Cationic powder grade reference
The listed C-series powders cover Low to Very high charge ratings. For organic or biochemical sludge, compare the charge profile and the separation result together.
BLUFLOC grade
Molecular weight
Charge degree
Molecular weight
Very high
Molecular weight
Very high
C8010, C8030 and C8040 share the High molecular-weight label while charge increases from Low to Medium to High. C9050 and C9060 are both rated Very high for molecular weight and charge, so a controlled comparison is needed to distinguish their performance.
Evaluate the dewatering result
Use drainage, solids capture, filtrate or centrate quality, and cake solids to judge a dewatering polymer. Include the behavior of the actual press or centrifuge. A large visible floc is only one observation and may not identify the most effective operating grade.
Nonionic powder grade reference
The N series is classified as nonionic in the catalogue. Its hydrolysis column still distinguishes Low and Very low levels; these labels should be preserved rather than converted into an assumed zero charge or a numerical percentage.
BLUFLOC grade
Molecular weight
Hydrolysis degree
Molecular weight
Medium high
Hydrolysis degree
Very low
Both N630 and N850 are listed for industrial wastewater, textile effluent, and mining and metallurgy. N850 also appears under inorganic sludge and aluminum red mud. Compare the relevant N grade when the sample response supports including a low ionic alternative.
Emulsion grade reference
BLUFLOC emulsions include anionic EA and EWA grades and cationic EC grades. Retain the full product code when requesting samples or comparing data sheets.
BLUFLOC grade
Ionic type
Molecular weight
Charge degree
Molecular weight
Very high
Molecular weight
Very high
Charge degree
Medium high
Molecular weight
Very high
Molecular weight
Very high
Charge degree
Medium high
Molecular weight
Very high
EA6518 and EA8520 have different molecular-weight and charge ratings. EWA6520 and EWA7520 share the Very high molecular-weight rating and differ in charge. EC8040 and EC8060 also share the Very high molecular-weight rating, with Medium high and High charge respectively.
Follow the product-specific preparation instructions. Emulsion requires appropriate inversion and activation; powder requires effective dispersion and dissolution. Poor make-up can obscure the difference between otherwise suitable grades.
Similar codes across forms do not establish identical performance. For example, the catalogue rates AA6518 powder as Very high in molecular weight and EA6518 emulsion as High. Confirm the complete grade profile before treating one form as a substitute for another.
Validate the shortlist with a controlled test
Use the catalogue to choose candidates, then use the actual feed and process conditions to select the operating grade. The workflow below is a practical test framework, not a fixed dosage recipe.
1. Collect a representative sample
Record the source, pH, temperature, solids, salinity and current chemical treatment. Include meaningful feed variations in the test plan.
2. Prepare comparable polymer solutions
Use suitable make-up water and the instructions for each grade. Record the concentration basis and preparation history so an activation problem is not mistaken for a grade mismatch.
3. Screen a small group of grades
Compare relevant ionic types or charge and molecular-weight levels. Keep sample volume, upstream chemicals and mixing conditions controlled.
4. Run a dose ladder
Include an untreated control and several doses. Define whether each dose means commercial product or active polymer; avoid mixing the two bases.
5. Measure the correct outcome
For clarification, track turbidity or suspended solids and settling. For dewatering, track drainage, capture, filtrate and cake solids. Use a separate performance program for drilling or EOR.
6. Confirm the finalists on site
Check preparation, dosing location and equipment response under operating conditions. Choose the grade and dose that meet the process target consistently.
Compare dose and cost on the same basis
Active-polymer dose equals commercial-product dose multiplied by the confirmed active-polymer mass fraction. For sludge, kg active polymer per tonne of dry solids provides a useful common basis. Use the supplier-confirmed active content; do not assume that a reported total-solids value is identical to active polymer.
Assess chemical consumption together with the treatment result and operating requirements. A lower unit purchase price does not, by itself, identify the lowest cost per volume treated or per tonne of dry solids processed.
Frequently asked questions
Which BLUFLOC PAM grade is best for wastewater treatment
There is no single best grade for every wastewater. Identify the solids and treatment stage, shortlist the relevant AA, C, N, EA or EC grades, and compare them on the actual sample. Upstream chemistry and separation equipment are part of that decision.
Is higher molecular weight always better
No. Molecular weight is one selection variable. Compare the complete grade profile, solution preparation and measured separation result. The catalogue also contains grades with the same broad ratings that still need to be tested separately.
Can one polymer serve clarification and sludge dewatering
It may be possible, but the two duties should be evaluated separately. The catalogue lists overlapping applications, while the feed concentration, chemical environment, equipment and performance targets can differ between treatment stages.
Should I choose powder or emulsion PAM
Choose the form that delivers the required result with a practical preparation and dosing system. Compare the shortlisted products on a confirmed active-polymer basis and include handling and make-up requirements in the assessment.
Does this guide provide a universal PAM dosage
No. Establish dose through controlled testing and a plant trial. Record the commercial-product or active-polymer basis explicitly so laboratory and operating results can be compared correctly.
What information should I send to Bluwat for selection
Provide the application and treatment stage, water or sludge analysis, pH, solids, salinity, temperature, current chemicals, separation equipment, existing polymer and required outcome. Include a representative sample or trial results when available.
Selecting BLUFLOC with Bluwat Chemicals
Yixing Bluwat Chemicals Co., Ltd. manufactures and supplies water treatment chemicals, including BLUFLOC polyacrylamide powders and emulsions. The range includes anionic, cationic and nonionic options for water treatment and industrial process applications.
Share your process data with Bluwat to develop a practical sample shortlist. Use the current grade-specific technical data sheet, controlled tests and operating results to confirm the final selection.
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