Delaware New Castle Civic Plus #977

Odor, Corrosion, and H2S Control System for Sewer Transmission – New Castle County

New Castle County Purchasing Division is seeking a contractor to provide a comprehensive odor, corrosion, and hydrogen sulfide (H2S) control system for its sewer transmission infrastructure. - Government Buyer: - New Castle County Purchasing Division - Products and Services Requested: - Supply, installation, operation, and maintenance of a natural, organic, nonhazardous liquid-phase odor and corrosion control solution (EPA Class A, kelp-derived) - Automatic hydrogen sulfide gas samplers and loggers for permanent and as-needed monitoring - Industrial-grade storage containers and metered dispensing equipment for approximately 40 pump station locations, with expansion capability - Full-service installation, operation, and maintenance, including weekly site visits, on-call support, and regular reporting - Corrosion protection and condition assessment of critical transmission lines, with biannual inspections and photographic documentation - Weekly and monthly sampling, data logging, and reporting of H2S and odor levels - On-demand provision of complementary odor and corrosion control products and services (e.g., odor neutralizers, degreasers, algae control, air scrubbers, anti-corrosion sprays) - Unique or Notable Requirements: - Solution must be EPA certified Class A material, derived from Ascophyllum nodosum kelp - All dosing and monitoring must be automatic and continuous - Contractor retains ownership of dispensing and monitoring equipment during contract - Equipment must be suitable for harsh wastewater environments and include both 120V and DC battery-powered options - Prioritization of dosing within the Christina River Forcemain - Regular executive summaries and corrective action documentation required - No specific OEMs or vendors are named in the solicitation. - The system must be scalable to add more dosing and monitoring sites as needed.

Description

This solicitation seeks competitive sealed bids and priced proposals for the installation, operation, and maintenance of an odor, corrosion, and hydrogen sulfide (H2S) control system for the New Castle County sewer transmission system. The system will utilize a natural organic solution to stimulate biological activity to reduce the formation of fats, oils, greases, hydrogen sulfide, and ammonia, and to prevent nuisance odors at pump stations and force main outfalls. The scope includes liquid phase treatment at multiple dosing locations, gas sampling and monitoring, corrosion protection of critical transmission lines, and regular reporting. The contractor is responsible for equipment installation, maintenance, monitoring, and adjustments to meet performance requirements.

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