Expression of interest: effluent recycling & water treatment plant equipment – glodina towelling, kwazulu-natal

Step 1 is a pre-qualification / expression of interest stage. Based on the information received, a shortlist of prospective turnkey suppliers will be compiled. Shortlisted suppliers will then be requested to provide a detailed technical and commercial proposal with pricing in Step 2. No scoring system, minimum qualifying score, or preference point system is stated.

Scope: design, supply, install and commission a turnkey effluent treatment plant (ETP) to recycle at least 85% of dyehouse effluent for reuse as softened feed water, and to treat additional borehole water for the same purpose.

Capacity requirements:

• Process up to 1.2 ML/day of effluent.
• Handle instantaneous surge of up to 120 kl per hour (for 8 to 10 minutes).
• Reclaim at least 85% for reuse.
• Current average softened feed water use: 800 kl per 24-hour period on operating days.

Feed water specification to dyehouse:

• Hardness (CaCO3): max 0.8 mg/l (8 ppm)
• Calcium: max 0.4 mg/l
• Magnesium: max 0.4 mg/l
• Copper: max 0.01 ppm
• Manganese: max 0.02 ppm
• Iron: max 0.02 mg/l
• pH range: 6.5 to 7.5
• Salts: nil
• Suspended solids: nil
• Active chlorine: nil

Reject concentrate disposal: propose an existing or integrated solution for responsible disposal, reuse or reclamation of reject concentrate and sludge.

Site and process context:

• Dyehouse has 12 fabric jet-dyeing machines and 3 yarn dyeing machines, total liquor capacity 30,422 L.
• Batch dyeing process.
• Most dye baths and bleaching have high alkaline pH (often above pH12); disperse dye baths have low pH (about 4 to 5.5).
• Effluent may contain a wide range of textile chemicals including PVA, starch, reactive and vat dyes, sodium hydrosulphite, caustic soda, salts, sizing chemicals, softeners, surfactants, enzymes, and antimicrobials.
• Up to 18 rinse baths per dye batch.

Attachments provided for reference: effluent and borehole water test results, current ETP process flow diagram, current ETP layout diagram, P&ID of existing ETP, layout diagram of ozone treatment plant, layout diagram of dyehouse.

The proposed solution must integrate with the existing effluent treatment plant (Phase 1) and the new Phase 2 water treatment plant. The process flow involves effluent from the dyehouse, treated water for reuse, existing WTP, water treatment plant Phase 1 (Phase 2), borehole water, and a reject/waste stream.

Pricing is not required at this EOI stage. Shortlisted suppliers will be requested to provide a detailed commercial proposal with pricing in Step 2.

No specific compliance requirements (e.g., CSD, tax, B-BBEE, CIDB) are stated in the document. A valid safety file is required as part of the capability evidence.

A valid safety file is required as part of the capability evidence for the turnkey installation.

To express interest and show capability to supply a turnkey solution, provide: company overview; references of similar projects in the textile industry with contact details; proposed technologies and process concept diagram; evidence of ability to provide project management, engineering design, civil engineering/specifications, equipment and supporting infrastructure, construction/installation supervision, skilled labour for turnkey installation, valid safety file, check out, commissioning, startup, operation and operator training, babysitting, and performance test approximately 1 month after start-up.

Required ETP capacity to process up to 1.2 ML/day of effluent, with a possible instantaneous surge of up to 120 kl per hour (for a period of possibly 8 to 10 minutes) to reclaim at least 85% for reuse as softened feedwater to the dyehouse. Current average use of softened feedwater is 800 kl per 24-hour period on days of operation. Water specification for feed water to dyehouse: Hardness (CaCO3) max 0.8 mg/l, Calcium max 0.4 mg/l, Magnesium max 0.4 mg/l, Copper max 0.01 ppm, Manganese max 0.02 ppm, Iron max 0.02 mg/l, pH range 6.5 to 7.5, Salts nil, Suspended solids nil, Active Chlorine nil. Disposal of reject concentrate: propose an existing or integrated solution for responsible disposal/reuse/reclamation of reject concentrate and sludge.