Expression of interest: turnkey expansion of textile effluent treatment plant for 85% water recycling – glodina towelling (pty) ltd, hammarsdale, kwazulu-natal

Returnable documents:

• Annexure 1 (Intent to Submit and Expression of Interest): completed and returned to express interest.

Submission method: not stated in the document.

Complete and return Annexure 1 (Intent to Submit and Expression of Interest) to express interest.

Evaluation process:

• Stage 1: Expression of interest (this document).
• Stage 2: Shortlisted turnkey suppliers are invited to submit a detailed technical and commercial proposal with pricing.

No scoring or minimum qualifying score is stated.

Scope:

• Design, supply, install and commission a turnkey expansion of the existing effluent treatment plant (ETP) at Glodina Towelling (Pty) Ltd in Hammarsdale, KwaZulu-Natal.
• Recycle at least 85% of effluent for reuse as softened feed water to the dyehouse.
• Treat additional borehole water in the proposed water treatment plant for the same purpose.

Capacity requirements:

• ETP capacity: up to 1.2 ML/day of effluent.
• Possible instantaneous surge: up to 120 kl per hour for 8 to 10 minutes.
• Current average softened feed water use: 800 kl per 24-hour period on operating days.

Treated water specification (feed water to dyehouse):

• Hardness (CaCO3): max 0.8 mg/l (8 ppm)
• Calcium (Ca): max 0.4 mg/l
• Magnesium (Mg): max 0.4 mg/l
• Copper (Cu): max 0.01 ppm
• Manganese (Mn): max 0.02 ppm
• Iron (Fe): 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 or reclamation of reject concentrate and sludge.

Attachments provided:

• 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.

Factory and dyehouse details:

• Dyehouse has 12 fabric jet-dyeing (exhaust) machines and 3 yarn dyeing machines; total liquor capacity 30,422 L when full.
• Dyeing is a batch process.
• Most dye baths (vat and reactive dyeing of cotton) and bleaching have high alkaline pH, often above pH 12; disperse dyeing occasionally at pH 4–5.5.
• Common salt (NaCl) and Glauber's salt (sodium sulphate) are used, increasing conductivity.
• Sizing trough drains (once per day) and preparation baths may contain PVA, starch and waxes.
• Rinse baths (up to 18 per dyebatch) contain dyeing chemicals but are less concentrated and closer to neutral pH.
• Finishes include silicone softeners and antimicrobial finishes.

Effluent may contain: cotton fibres (and small amounts of polyester), PVA, starch (potato), reactive dyes, vat dyes, sodium hydrosulphite, disperse dyes, dispersing agents, optical brightening agents, caustic soda, acid, sodium bicarbonate, common salt, sodium sulphate, sizing chemicals (PVA, starch, CMC), levelling agents, soda ash, softeners, anti-microbial (silver), anti-fungal, spin finish, waxes, surfactants, anti-foam, enzymes, foam.

Provide references of similar projects in the textile industry demonstrating capability to process textile factory (dyehouse and sizing department) effluent to meet the criteria for reuse as softened dyehouse feed water, with contact details.

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

Pricing is not required at this stage. Shortlisted turnkey suppliers will be asked to provide a detailed technical and commercial proposal with pricing in Step 2.

Capability evidence required:

• Valid safety file.
• Ability to provide project management, engineering design, civil engineering/specifications for civil works, equipment and supporting infrastructure, construction/installation supervision, skilled labour for turnkey installation, commissioning, startup, operation and operator training, babysitting, and performance testing (approx. 1 month after start-up).

No specific eligibility criteria (e.g., CSD, tax, B-BBEE, CIDB) are stated in the document.

Bidders must provide a valid safety file and demonstrate capability to supervise construction/installation safely, including skilled labour for turnkey installation.

Required ETP capacity: process up to 1.2 ML/day of effluent, with possible instantaneous surge up to 120 kl per hour for 8 to 10 minutes, reclaiming 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 operating days.