environmental site assessments, engineering permits regulations, environment waste water, Huff and Huff

BACK

Wastewater Treatment - Municipal

Design
Construction Management
Operation & Maintenance
Start-up Assistance, Training and Troubleshooting
Technical Assistance in Regulatory Procedures

Wastewater treatment is an area in which Huff & Huff, Inc. (H&H) has specific expertise. The firm has designed over twenty wastewater treatment upgrades, including a land application system for high-strength organic wastes, which was described in an article published in the Journal of the Water Pollution Control Federation. H&H has handled a variety of wastewater municipal projects and designs. A 325,000 gpd plant design was completed for municipal waste, including nitrification and filtration.

The firm recently completed completely upgrading a 30-year old municipal plant, with the addition of bypass treatment of high flows, rebuilt territary filters, bar screen, grit washer, and new influent pump meters and control scheme.

A 60,000 gpd expansion of a municipal plant was designed with process changes to a contact stabilization system. A wastewater treatment system for a 1,500 unit trailer park was designed including nitrification and filtration facilities. H&H's design experience also includes a 5.5 mgd treatment plant debottlenecking project for a 21 mgd wastewater treatment plant, and an 0.5 mgd expansion using batch biological reactors for a 1.5 mgd facility. The firm has designed wet weather pumping facilities and has modeled an entire sewer system utilizing U.S. EPA's SWMM Model to develop the conceptual design for improving wet weather capture efficiency.

Wastewater design services have been provided for five golf course/country clubs, ranging from evaluating alternatives for sewage treatment, lift station/force main design, upgrading a contact stabilization plant, to designing an aerobic system using batch biological reactors followed by a percolation system. The sequential batch reactors have been applied where there is no available sewer or surface water discharge point.

Additional expertise in municipal treatment plant operation is also offered. H&H has taken over total responsibility of a 1.5 mgd municipal sewage treatment plant (STP). As supervisor of this plant, H&H reduced effluent violations to less than 3% of what was previously experienced. In addition, operating expenses were reduced by over $30,000 per year.

Sludge management is an area of major concern to most municipalities. The firm recently completed a sludge filter press and covered storage pad design and permitting for a 4.0 mgd municipal plant. H&H has set up a wet application system for one community, including preparation of a complete sludge management plan. In addition, sludge management was an integral aspect of the previous projects described above.

H&H has also prepared a complete pretreatment program for a municipality, which included sampling the industry, the STP, the receiving stream, and the sludge, developing sewer effluent limits, a fee structure, and the ordinance. The firm designed a 50,000 gpd anaerobic digester supernatant SBR system to reduce the organic and ammonia load on a treatment plant, after designing and data analysis of a 2,000 gpd pilot study. The use of SBR to treat digester supernatant is believed to be the first such system in the U.S.

H&H has offered specific environmental services to communities involved with regulatory variances and site specific rule changes. Wastewater disinfection exemptions, ZID studies, and mixing zone studies have been prepared, as well as high velocity diffuser designs. Recently a high rate diffuser design was completed for a facility in Egypt. Technical assistance in assessing environmental impact has been conducted for numerous municipalities relating to NPDES permit negotiations and appeals to adjusted standards requests including ammonia, total dissolved solids, BOD, and TSS limits.