Flocculants · Coagulants · Carbon · From China
There is no water-treatment cure-all. The flocculant that clears one plant's effluent can do nothing in your tank — because ionic charge, turbidity, pH and scale type are set by your water, not by a datasheet. So we start from the water, not the product: read it, prescribe the combination, prove it in a jar test, then load the container.
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Why Water Treatment Is Different
A supplier can hand you a beautiful specification for a flocculant or coagulant and it still tells you nothing about whether it will work in your process. The same anionic polyacrylamide that drops sand-washing tailings in minutes will barely stir municipal sludge; the same coagulant dose that clears a river intake will be useless against a high-COD textile stream. The variable is never the printed number — it is your water: its ionic demand, its turbidity, its pH, its hardness and the kind of scale it forms.
That is why buying water treatment chemicals off a catalogue is how plants end up with a container they cannot dose. The right question is never "what is your price for PAC" — it is "for this water, what combination, at what control target." A coagulant knocks down charge and turbidity; a flocculant grows the flocs so they settle; activated carbon lifts colour, odour and organics; an antiscalant protects the membrane or boiler downstream. Which of those you need, and in what grade, is a prescription — not a shopping list.
So this page is a diagnostic tool, not a catalogue. Find your water below, read across to the chemical combination it usually calls for, then let a jar test confirm the exact grades before anything ships.
Diagnose The Water → Read The Prescription
Find your water on the left. Read across for the coagulant, the flocculant and any adsorption or scale-control chemical that stream typically needs — plus the control indicator you are actually chasing. Every chemical name links to the product page where you pick the exact grade. These are starting points; the jar test settles the final selection.
| Your water | CoagulantPAC basicity | FlocculantPAM ionic type | Adsorptionactivated carbon | Scale controlantiscalant | Key control target |
|---|---|---|---|---|---|
| Municipal sewageSewage / STP | PAC basicity 40–70% | PAM Cationic for sludge dewatering | Optional — odour / colour polishing | — | SS, turbidity, sludge cake dryness |
| Industrial — textile & dyeETP | PAC high basicity 60–80% | PAM Anionic | Carbon for colour & COD | — | Colour, COD, turbidity |
| Industrial — food & beverageETP | PAC basicity 50–70% | PAM Anionic / Cationic for DAF | Carbon for taste / odour | — | FOG, COD/BOD, TSS |
| Mining & sand washingProcess water | PAC as needed | PAM Anionic, very high MW | — | — | Settling rate, water clarity, recycle % |
| Drinking waterPotable / DWTP | PAC drinking-water grade | PAM Nonionic (low residual) | Carbon for taste, odour, micro-pollutants | — | Turbidity <1 NTU, residual metals |
| RO / reverse-osmosis systemsMembrane pre-treatment | — | — | Carbon for chlorine / organics removal | Antiscalant matched to scale type | SDI, LSI, membrane fouling rate |
| Cooling & boiler waterCirculating water | — | — | — | Antiscalant / corrosion inhibitor | Hardness, LSI, scale & corrosion rate |
Your stream sits between rows — brackish, oily, or high-salinity effluent? That is exactly what the jar test is for. Tell us the water and we shortlist the combination.
Send your water type — get the prescriptionSee The Actual Product
Flocculant
PAM in every ionic type — matched to your sludge, jar-tested first.
Coagulant
PAC by basicity and Al₂O₃ content, drinking-water to industrial grade.
Adsorption
Activated carbon by base material and iodine value.
Four Chemicals, One Container
Each one solves a different water problem, and most plants dose two or three together. Pick the grade on the product page — they all ship from one supplier, in one container, with one set of documents.
Flocculant
Grows fine suspended solids into large, fast-settling flocs. The problem it fixes: sludge that won't dewater and water that won't clear. Anionic, cationic or nonionic — the charge is everything.
View grades & specsCoagulant
Neutralises the charge that keeps particles suspended, dropping raw turbidity before the flocculant. The problem it fixes: cloudy intake and colour. Al₂O₃ content and basicity define the grade.
View grades & specsAdsorption
Adsorbs colour, odour, chlorine, COD and trace organics that coagulation leaves behind. The problem it fixes: water that is clear but not clean. Coal, coconut or wood base by duty.
View grades & specsScale control
Keeps carbonate, sulphate and silica scale off RO membranes, boilers and cooling towers. The problem it fixes: fouling that kills membranes and throttles heat transfer. Matched to your scale type.
View grades & specsProve The Prescription Before The Container
This is the entire discipline of buying water treatment chemicals: never book twenty tons of a coagulant-and-flocculant pairing that has not beaten its rivals in a beaker of your own water. Send us a water sample, or we send you chemical samples — either way the grade is proven on your water first. The loop runs about two weeks door to door.
Send the water — or take the samples
Courier us a water sample and lab data, or we ship free chemical samples for you to test on site. Include stream type, flow, and your target indicator.
Jar-test the combination
Dose the shortlisted coagulant and flocculant stepwise; watch floc size, settling speed and clarity. A one-page protocol comes with every sample set.
Lock the grade & dose
The winning combination — PAC basicity, PAM charge, carbon grade — becomes your contract spec. Every future lot is checked against it, not against a generic datasheet.
Load the first container
Your prescribed chemicals consolidate into one box with one COA set and one bill of lading to your port — Central Asia, South America, the Middle East, Africa or Southeast Asia.
Chemical Stops = Plant Stops
A treatment plant cannot pause. The day the flocculant runs out, the clarifier goes cloudy and the discharge fails consent — so for repeat buyers of water treatment chemicals, continuity of supply matters as much as the grade. Getting the prescription right once is worthless if the resupply is late. Here is how we keep the dosing room stocked.
Once your grade is locked, we hold agreed safety stock of your PAM, PAC, carbon or antiscalant so a reorder ships against inventory — not against a fresh 7–15 day production run that could leave your tanks empty.
For a high-volume plant we split an annual quantity into scheduled part-shipments — a container every month or quarter to a plan — so you carry less working capital and never sit on a single all-or-nothing delivery.
We hold your spec and factory on file, so a repeat order is a same-grade confirmation, not a new selection cycle. You get a firm reorder-to-port lead time to build your own stock triggers around.
Tell us your monthly consumption and we'll propose a stocking and shipment plan alongside the quote.
Set up a supply planReading The Quotes
There is no single "water treatment chemicals price" — a drinking-water PAC and a low-grade sewage PAC are different products, and a 60%-charge cationic flocculant is almost a different chemical from a low-hydrolysis anionic one. Your cost is set by the combination you locked in the jar test, the content grade of each chemical, and how much water you treat per month. A quote that looks impossibly cheap for the grade you specified usually means a weaker content, a lower charge, or a diluted product — not a better deal.
We quote against your locked spec, name the factory, and put the measured values on every COA — so you compare the same molecule across suppliers, not the same three letters. Send your water type and monthly volume and we come back with a current-month reference price, never a number carved on a webpage.
— Matt, XILINK founder · 13 years sourcing & exporting industrial products from China
Send Your Water Type & Monthly Volume — Reference Price In 24hThe four levers behind every quote
The chemical combination
Coagulant only, or coagulant plus flocculant plus carbon? Each chemical you add is priced on its own market — the prescription drives the basket cost more than any single unit price.
Content & ionic grade
PAC basicity and Al₂O₃ content, PAM charge and molecular weight, carbon iodine value — the higher the specified grade, the higher the floor. "28% sold as 30%" is where the cheap quotes come from.
Throughput & volume
Cubic metres treated per day sets your monthly tonnage, and tonnage sets your bracket. A municipal plant and a small ETP buy the same chemical at very different landed costs.
Powder vs liquid freight
Solid PAC and powder PAM ship dense; liquid PAC and emulsion PAM are part water. On a full container, whether you ship the active or the water it's carried in changes the delivered cost.
Straight Answers
Start from the routing matrix above: your water type points to the coagulant, flocculant and any carbon or antiscalant it usually needs, plus the control target. Then send us the water — stream type, flow, turbidity/COD/hardness and your goal — and we shortlist specific grades. The jar test confirms the exact combination and dose before you order, so you are never guessing at the container stage.
Yes — this is the core of how we work. You can courier us a water sample for lab jar testing, or we ship free chemical samples of the shortlisted grades with a one-page protocol for you to run on site. You dose stepwise, watch floc formation, settling and clarity, and lock the winning grade. That sample's production spec becomes your contract spec.
Once your grade is locked we hold agreed safety stock so a reorder ships against inventory, not against a fresh production run. For high-volume plants we schedule staggered part-shipments — a container to a plan — and keep your spec and factory on file so a repeat order is a same-grade confirmation with a firm lead time. The dosing room is built never to run dry.
A full dosing line — PAC, PAM, activated carbon and antiscalant — consolidates into a single container with one set of shipping documents and one bill of lading. Most are non-dangerous goods in bags or drums, palletised together. Buying the whole prescription in one box is how treatment plants and dealers actually order, and it spreads the ocean freight across the whole load instead of paying it four times.
Common grades of PAC, PAM and carbon are usually produced within 7–15 days of order confirmation; fresh stock beats warehouse stock for chemicals that degrade with age. Ocean transit depends on your route and is confirmed with the quote. For repeat buyers we hold safety stock and schedule shipments so resupply arrives before you run out.
Diagnosed, Tested, Loaded
Tell us what you're treating — sewage, tailings, textile or membrane feed — with whatever numbers you have. We come back within 24 hours with the shortlisted coagulant, flocculant and support chemicals, the sample plan and a current-month reference price.
Free samples and jar-test protocol before any container
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Thank you — within 24 hours you'll have the shortlisted chemicals, the sample plan and the current-month reference price.
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