Waste Water Treatment Plant Expansion
Source: BidPrime
Posted Date: June 18, 2025
Expiration Date: August 6, 2025
State: TX
Description: file:///C:/Users/sarah.v.SEINC/Downloads/BidSetDrawings-NHMUDWWTPExpansionto1.85MGD.pdf
The work consists of providing the necessary
labor, materials, equipment, supervision, and plant to construct the
Wastewater Treatment Plant Expansion to 1.85 MGD for the Northampton Municipal
Utility District in Harris County, Texas. The work includes rehabilitation, improvements,
expansion, and construction at the two facilities that comprise the
wastewater treatment plant (WWTP). WWTP No. 1: The work at WWTP No. 1 includes,
but is not limited to: expansion of Lift Station No. 2 to increase the firm pumping
capacity of the two lift stations to 5,139 gpm peak two hour flow; expansion of the
headworks to increase the treatment capacity to 5,139 gpm peak two hour flow;
rehabilitation of the existing aeration diffuser systems; replacement of the clarifier
mechanism at Clarifier No. 1; rehabilitation of Scum Pump Station No. 1; construction of
submersible RAS/WAS Pump Station No. 1 with chopper pumps; construction of grating
at the Clarifier No. 2 launder trough box; rehabilitation of Scum Pump Station No. 2;
pump replacement and rehabilitation of RAS/WAS Pump Station No. 2; rehabilitation of
the chlorine contact basin and effluent pump station; rehabilitation of the sludge holding
tanks including modifications to the existing decant mechanism; improvements to the
existing chemical system including expansion of the sodium bisulfite chemical system to
treat up to 5,139 gpm peak two hour flow and ventilation improvements for the storage
and feed room; construction of a dechlorination basin with a submersible mixer;
replacement of the blowers with four centrifugal blowers, elevated three feet above the
0.2% annual chance floodplain; rehabilitation of the control building; modifications to
existing yard piping, including construction of a new outfall and sampling location;
protective coatings; and all associated power, instrumentation, plant PLC monitoring,
controls, and programming. This project also includes the installation and field testing of
a 600kW diesel generator elevated three feet above the current 0.2% annual chance
floodplain. WWTP No. 2: The work at WWTP No. 2 includes, but is not limited to:
improvements and expansion of the influent basins; construction of an aeration basin to
increase the aeration treatment capacity of WWTP No. 2 to 0.90 MGD ADF;
rehabilitation and improvements for the existing aeration basin; construction of a 45-foot diameter spiral blade secondary clarifier and submersible scum pump station with
chopper pumps to increase the clarifier treatment capacity of WWTP No. 2 to 2,500 gpm
peak two hour flow; rehabilitation of the existing secondary clarifier and scum pump
station; construction of a chlorine contact basin to increase the
disinfection treatment capacity of WWTP No. 2 to 2,500 gpm peak two hour flow;
rehabilitation and improvements for the existing chlorine contact basin; replacement of
the post-aeration system; improvements to the flow measurement channel to increase
flow measurement capacity; construction of two digesters to increase
the treatment capacity of WWTP No. 2 to 0.90 MGD ADF; rehabilitation to
improvements for the existing digesters, including modifications to the existing decant
mechanism and flow metering systems; replacement of the three positive displacement
blowers, elevated three feet above the 0.2% annual chance floodplain, to increase the air
delivery required by the expanded facility; replacement of the sodium hypochlorite
chemical system to treat up to 2,500 gpm peak two hour flow; construction of a non-potable
water pump station with self-priming pumps; rehabilitation and improvements to
the existing 500 kW diesel generator; modifications to existing yard piping; protective
coatings; and all associated power, instrumentation, plant PLC monitoring, controls, and
programming. This project also includes modifications to floodproof the existing controls
building
Estimated Cost:
Contact: Micheal Mawdsley mmawdsley@quiddity.com (713) 777-5337
Location: Bellaire TX
