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Water & Wastewater Treatment Equipment from China
SBCCO-China supplies and inspects water and wastewater equipment — clarifier and thickener internals, FRP collection systems and launders, filters, odour control and biofilters, tanks, GRP pipework and pumps — most of it dimensioned to basins and structures that already exist on site.
01 / The circuit
Most of this equipment has to fit something somebody else already poured.
Greenfield plants are the easy half. The work that actually comes to us is a retrofit — a collection system for a basin built in 1996, a launder that has to land on an existing weir, a filter deck whose OEM no longer supports the machine. That is a survey problem before it is a fabrication problem.
Intake and screening
Intake structures, screens, screenings handling, pump barges and floating intakes for raw water. Liquid Transmission
Coagulation and flocculation
Mixing and flocculation tanks, agitators, dosing skids and reagent storage in FRP, PP or lined steel. FRP Products
Clarification and sedimentation
Clarifier and thickener drive heads, rake arms, feedwells, weir plates, scum baffles, and FRP collection headers, laterals and launders built to the basin survey. Solid / Liquid Separation
Filtration
Filter underdrains, troughs, launders, backwash systems, drum and belt filter tubs and internals in FRP and alloy. Solid / Liquid Separation
Disinfection and chemical dosing
Chlorine, hypochlorite and acid dosing systems, PTFE and PVDF lined pipe, and lined valves for aggressive dosing lines. PTFE Lined Products
Odour control and air handling
Biofilters, chemical scrubbers, FRP ducting, dampers and fan housings for odour and corrosive air streams. Valves & Dampers
Sludge, effluent and outfall
Thickeners, filter presses, sludge pumps, large-diameter GRP effluent lines and outfall piping with jointing procedures. Liquid Transmission
02 / Failure modes
What actually fails on a treatment plant.
The failures in this sector are rarely dramatic. They are slow, they are usually about fit or material selection, and they cost far more in labour than in equipment.
| What fails | Why it happens | What we do about it |
|---|---|---|
| New launders do not land on the existing weir | Fabricated from a design drawing rather than from the basin as it was actually built and has since settled. | We survey the basin, or work from your survey, issue a dimensioned proposal drawing for approval, and trial-assemble segmented work before it is cut apart for shipping. |
| Stainless internals pit in chlorinated water | 316L specified by habit into a chloride level it cannot tolerate, often made worse by hypochlorite dosing nearby. | Chloride and free chlorine levels asked for at the enquiry, and duplex, super duplex or FRP proposed where 316L will not survive. We will say so even when it costs us the price advantage. |
| FRP launders crack at the supports | Point loading and thermal movement, from a laminate and support spacing that were designed independently of each other. | Laminate schedule and support spacing designed together against span, liquor and temperature, with support details shown on the erection drawing. |
| Dosing line fails at a joint | Lined pipe with the liner trimmed flush and bonded instead of flared, or with the housing vent holes never drilled. | Liner flared over both flange faces, vent holes drilled and verified, and every item spark-tested at the correct voltage before shipment. |
| Biofilter or scrubber media support sags | Support grid designed for the dry weight of the media rather than the flooded weight plus differential pressure. | Support grilles designed to the flooded condition with the pressure drop included, and the design basis stated in the quotation. |
| A discontinued filter or clarifier part cannot be matched | The OEM has withdrawn support and no drawing survives anywhere on site. | Send us the part. We scan or measure it, issue a dimensional reconstruction showing which surfaces we inferred rather than measured, and manufacture only after you approve it. We do not represent the result as an original-equipment part. |
The common thread is that the expensive mistakes are made before anyone lifts a tool on site. A basin survey and a water analysis at enquiry stage remove most of them.
03 / Delivered
Named clients, named equipment.
WesTech has been buying from us since 2006. Ovivo, Suez and Biorem are also on our client list — ask for the reference and we will give you the contact.
Puerto Rico
FRP thickener trough system
A complete trough and launder system dimensioned to an existing basin, trial-assembled and match-marked before crating. Photographed in service.
Biorem
FRP biofilter vessel
Biofilter vessel for odour control, fabricated in China to the customer’s design and inspected before shipment.
Clarifier retrofit
FRP collection pipe system
Collection headers, laterals and weir plates fabricated to a basin survey and shipped match-marked for installation.
04 / What to send us
Send the basin survey and the water analysis.
Two documents remove most of the risk on a treatment plant order. If you have neither, send photographs with a tape measure in them and we will tell you what still needs measuring.
- Basin, deck or structure survey — or photographs with reference dimensions
- Water or effluent analysis: chlorides, free chlorine, pH, temperature
- Flow rate, hydraulic loading and design turndown
- Existing equipment make and model where you are retrofitting
- The worn or broken part itself, where no drawing survives
- Materials already in the plant, so galvanic couples are avoided
- Local design standards the equipment must satisfy
- Inspection and test plan, and who witnesses it
- Access constraints: door and hatch sizes, crane capacity, working headroom
- Whether you want us to name and introduce the fabricator
05 / Questions
Water & wastewater — common questions
Can you supply internals for a basin built by someone else?
Yes — it is most of what we do in this sector. We need a survey of the structure and the process duty. We return a dimensioned proposal drawing for approval before anything is fabricated, and everything ships match-marked to an erection drawing.
Will 316L be good enough for our water?
Sometimes. It depends on chloride level, free chlorine, temperature and crevice geometry. Send the analysis and we will tell you honestly, including when duplex or FRP is the cheaper answer over the life of the plant.
Can you match a discontinued clarifier or filter part?
Usually. Send the machine make and model, or the part itself. We dimension it, issue a reconstruction for your written approval, and manufacture to the approved geometry. We do not put OEM brand names on the part or represent it as OEM-manufactured.
How large a thickener or clarifier can be shipped?
Up to 45 m diameter, supplied as bolted or welded segments sized to fit containers or flat racks. Segments are trial-assembled and match-marked in China so field fit-up is mechanical rather than corrective.
Do you supply the jointing materials for GRP pipe?
Yes. Butt-and-strap kits, resin, veil, a tooling list and a written jointing procedure ship with the pipe, and we can send a supervisor for the first joints if your crew has not done it before.
What lead times should we plan for?
FRP internals and launders 10–18 weeks; thickeners and clarifiers 16–24 weeks; GRP pipe 10–16 weeks depending on diameter. Retrofit work is scheduled backwards from your outage window.
Send the survey, the analysis, or the broken part.
Upload a basin survey, a water analysis or photographs with dimensions. We come back with materials, a dimensioned proposal drawing, an inspection plan and a price.